CN110594209A - A kind of air wave supercharging device - Google Patents

Abstract

The invention relates to a gas wave supercharging device, which comprises a supercharging part and at least two stages of pressure cavities which are sequentially arranged, wherein each stage of pressure cavity comprises a high-pressure cavity, a middle-pressure cavity and a low-pressure cavity respectively; the pressure boosting part is used for converting high-pressure gas in the high-pressure cavity at the same level and low-pressure gas in the low-pressure cavity into medium-pressure gas in the medium-pressure cavity; in the two adjacent pressure cavities, a middle pressure cavity at the front stage is communicated with a high pressure cavity at the rear stage, and a low pressure cavity at the front stage is communicated with the middle pressure cavity at the rear stage; wherein, a part of the medium pressure gas in the medium pressure cavity of the first stage pressure cavity is taken as a product, and the other part of the medium pressure gas is introduced into the high pressure cavity of the rear stage pressure cavity adjacent to the product. The gas wave supercharging device can be suitable for large expansion ratio and compression ratio and ensures the refractive index, and when the injected gas pressure is the same, the medium-pressure gas production with higher pressure can be obtained, so that the device has wider application range and higher isentropic efficiency.

Description

A kind of air wave supercharging device

technical field

The invention relates to the technical field of gas boosting, in particular to a gas wave boosting device.

Background technique

Gas wave pressurization technology is a new type of pressure energy comprehensive utilization technology, which is mainly used in natural gas exploitation, high-pressure coalbed methane pressure reduction, low-pressure gas booster gathering and transportation and other fields. The commonly used booster injection equipment includes compressor unit, turbocharger unit, static ejector and other equipment. Compressors, turbochargers, etc. mainly rely on blades to operate, and pressurize gas through the process of mechanical energy conversion; such equipment has problems such as complex structure, high installation and maintenance costs, and difficulty in operating with sand and liquid. The static ejector is a purely static device, which realizes pressure energy exchange through the direct mixing of high and low pressure gases. This kind of device has a large energy loss and low efficiency.

The air wave supercharging technology realizes energy exchange through the pressure wave running in the double-opening oscillating tube, which has high efficiency and good liquid carrying performance, such as the patented axial flow jet air wave supercharger CN201220115597.0, radial jet air wave supercharging Device CN201210081102.1, etc., but it is generally suitable for small expansion ratios. When the expansion ratio is greater than 2, the ejection rate drops sharply, and the expansion ratio and compression ratio of the equipment are limited, and the medium-pressure gas production pressure is low.

Therefore, how to provide an air wave supercharging device that is applicable to a larger expansion ratio, compression ratio, and guaranteed ejection rate is a technical problem to be solved by those skilled in the art.

Contents of the invention

The purpose of the present invention is to provide an air wave supercharging device, which can be applied to larger expansion ratio and compression ratio and guarantee the ejection rate.

In order to solve the above technical problems, the present invention provides an air wave supercharging device, which includes a supercharging part and at least two pressure chambers arranged in sequence, and the pressure chambers at each stage include a high-pressure chamber, a medium-pressure chamber and a low-pressure chamber respectively. The high-pressure chamber of the first-stage pressure chamber is connected to the high-pressure intake valve, and the low-pressure chamber of the last-stage pressure chamber is connected to the low-pressure intake valve; the supercharging part is used to transmit energy through pressure waves to transfer the high pressure in the high-pressure chamber of the same stage The air and the low-pressure air in the low-pressure chamber are converted into the medium-pressure gas in the medium-pressure chamber; in the two adjacent pressure chambers, the medium-pressure chamber in the previous stage communicates with the high-pressure chamber in the subsequent stage, and the high-pressure chamber in the previous stage The low-pressure chamber of the first-stage pressure chamber communicates with the intermediate-pressure chamber of the subsequent stage; wherein, part of the medium-pressure gas in the intermediate-pressure chamber of the first-stage pressure chamber is used as a product, and the other part is passed into the high-pressure chamber of the adjacent subsequent-stage pressure chamber.

That is to say, there are only two intake valves, one is the high-pressure intake valve, which is connected to the high-pressure cavity of the first-stage pressure cavity, and the other is the low-pressure intake valve, which is connected to the low-pressure cavity of the final-stage pressure cavity, and the front and back are connected. In the adjacent two-stage pressure chambers, the medium-pressure chamber at the front stage communicates with the high-pressure chamber at the rear stage, the low-pressure chamber at the front stage communicates with the medium-pressure chamber at the rear stage, and the gas flows from the first-stage pressure chamber to the final stage. The pressure chambers flow step by step, and part of the medium-pressure gas in the medium-pressure chamber of the first-stage pressure chamber is used as a product, and the other part passes into the high-pressure chamber of the adjacent subsequent pressure chamber.

Through the above-mentioned multi-level feedback method, the gas pressure in the high-pressure chambers of each level decreases step by step, the gas pressure in the medium-pressure chambers of each level decreases step by step, and the gas pressure in the low-pressure chambers of each level decreases step by step. When the pressure of the first-stage high-pressure gas fed by the high-pressure intake valve is much greater than the pressure of the last-stage low-pressure gas fed by the low-pressure intake valve, through the above-mentioned multi-stage feedback method, the The low-pressure gas is pressurized step by step, and finally converted as the first-stage low-pressure gas into the first-stage pressure chamber and the first-stage high-pressure gas that enters the first-stage pressure chamber through the high-pressure intake valve to obtain a first-stage medium-pressure gas.

Multi-level feedback can realize the step-by-step pressurization of low-pressure gas, and can decompose the overall large expansion ratio into multi-level smaller expansion ratios, while ensuring a high ejection rate, it can also avoid the waste of high-pressure gas energy; Overcoming the limitation of the expansion ratio and compression ratio of the traditional gas wave ejector, when the pressure of the injected gas is the same, a higher pressure medium-pressure gas production can be obtained, so that the equipment has a wider application range and higher isentropic efficiency .

Optionally, the supercharger includes a transmission shaft and a rotor coaxially rotating with the transmission shaft, the side wall of the rotor is provided with a plurality of oscillating tubes at intervals along its circumference, and the axial direction of each oscillating tube Parallel to the axial direction of the rotor, the medium-pressure chambers of the pressure chambers of each stage are located at one end of the oscillation tube, and the high-pressure chambers and low-pressure chambers of the pressure chambers of each stage are located at the other end of the oscillation pipe; The transmission shaft drives the rotor to rotate so that the oscillation tube communicates with the high-pressure chamber, medium-pressure chamber and low-pressure chamber of each stage of pressure chambers step by step from the first-stage pressure chamber to the final-stage pressure chamber.

Optionally, each of the oscillating tubes has the same cross-section along its length direction.

Optionally, the high-pressure chamber, the medium-pressure chamber and the low-pressure chamber of the pressure chambers at each stage are respectively provided with nozzles communicating with them, and the nozzles include a cone section, and the large-diameter end of the cone section faces the pressure chamber. The cavity is provided, and the small-diameter end of the cone section is arranged toward the oscillation tube and can be connected with the oscillation tube.

Optionally, the side wall of the rotor is provided with a plurality of axial through holes, and the axial through holes form the oscillation tube.

Optionally, the rotor includes an inner sleeve and a wave rotor sleeved outside the inner sleeve, a cavity is provided between the wave rotor and the inner sleeve, and the inner sleeve is connected to the wave rotor and the wave rotor. The transmission shaft is fixedly connected, and the oscillation tube is arranged on the side wall of the wave rotor.

Optionally, the number of stages of the pressure chamber is two.

Optionally, it also includes a casing and a fixed seat fixed to the bottom of the casing, the rotor is located in the casing; the fixed seat is provided with high-pressure chambers and low-pressure chambers of the pressure chambers at various stages.

Optionally, it also includes a fixed shaft and an adjustment cover, the rotor is rotatably sleeved on the outside of the fixed shaft, and an axial limiter is provided between the rotor and the fixed shaft; the fixed The bottom end of the shaft passes through the fixing seat and is fixed with the adjustment cover, and the adjustment cover and the fixing seat are fixed by bolts; Step structure.

Optionally, the axial limiting member includes a first bearing set and a bearing cover; the first bearing set is arranged between the rotor and the fixed shaft, and the two ends of the first bearing set are respectively Abut against the bearing gland and the step of the inner wall of the rotor.

Optionally, it also includes a support plate arranged in the casing and a top cover arranged at the top of the casing, the support plate includes a sleeve, a first partition fixed to the sleeve, and at least one The second partition, the sleeve is rotatably sleeved on the outside of the transmission shaft, the first partition, the top cover and the housing enclose to form a cavity, the second partition The cavity is divided into intermediate pressure chambers of the pressure chambers of various stages.

Optionally, it also includes a second adjustment member, the second adjustment member includes a cover plate and a second gland, the lower surface of the cover plate is provided with a flange along its circumference, and the cover plate and the top cover The second gland is rotatably sleeved on the outside of the transmission shaft through bolt connection, the second gland is fixedly connected to the support plate, and the top end of the second gland protrudes from the The top cover is fixedly connected with the cover plate.

Optionally, a second bearing set is also provided between the sleeve and the transmission shaft.

Optionally, an annular protrusion is further provided on the upper surface of the top cover, the annular protrusion is located between the flange and the outer wall of the second gland, and the height of the annular protrusion is not greater than The second pressing cover protrudes the height of the top cover.

Description of drawings

Fig. 1 is the principle diagram when the air wave supercharging device is provided with two-stage pressure chambers;

Fig. 2 is the principle diagram when the air wave supercharging device is provided with three pressure chambers;

Fig. 3 is a schematic diagram of the internal structure of the gas wave supercharging device provided with two-stage pressure chambers;

Figure 4 is an enlarged view of A in Figure 3;

Figure 5 is an enlarged view of B in Figure 3;

Figure 6 is an enlarged view of C in Figure 3;

FIG. 7 is a schematic structural view of the fixing seat in FIG. 3 .

In the accompanying drawings 1-7, reference numerals are explained as follows:

H1-first-level high-pressure chamber, M1-first-level medium-pressure chamber, L1-first-level low-pressure chamber;

H0-the final high-pressure chamber, M0-the final medium-pressure chamber, L0-the final low-pressure chamber;

H2-secondary high-pressure chamber, M2-secondary medium-pressure chamber, L2-secondary low-pressure chamber;

1-nozzle; 2-rotor, 21-inner sleeve, 22-rotor; 3-oscillating tube; 4-transmission shaft; 5-support plate; 6-housing; 7-top cover, 71-ring protrusion; Cover plate, 81-flange; 91-first partition, 92-second partition, 93-sleeve; 10-fixed seat; 11-fixed shaft; 121-angular contact bearing, 122-deep groove ball bearing, 123-bearing sleeve; 13-second bearing group; 14-guiding channel; 15-adjusting cover, 151-step structure; 16-bearing gland, 161-first bearing gland, 162-second bearing gland; 17-the second gland; 18-high-pressure intake valve; 19-low-pressure intake valve.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the principle diagram when the air wave supercharging device is provided with two-stage pressure chambers; Fig. 2 is the principle diagram when the air wave supercharging device is provided with three-stage pressure chambers; Schematic diagram of the internal structure of the stage pressure chamber; Fig. 4 is an enlarged view of A in Fig. 3; Fig. 5 is an enlarged view of B in Fig. 3; Fig. 6 is an enlarged view of C in Fig. 3; Fig. 7 is a fixed seat in Fig. 3 Schematic diagram of the structure.

An embodiment of the present invention provides an air wave supercharging device, which includes a supercharging part and at least two stages of pressure chambers arranged in sequence. The high-pressure chamber of the high-pressure chamber is connected to the high-pressure intake valve 18, the low-pressure chamber of the final high-pressure chamber is connected to the low-pressure intake valve 19, and the supercharging part is used to transfer energy through pressure waves to convert high-pressure gas and medium-pressure gas into medium-pressure gas, That is, the gas in the high-pressure chamber of the same level and the gas in the low-pressure chamber are converted into the medium-pressure chamber of the same level through the pressurization part, which avoids energy loss caused by mixing and diffusion.

That is to say, there are only two intake valves, one is the high-pressure intake valve 18, which is connected to the high-pressure cavity of the first-stage pressure cavity, and the other is the low-pressure intake valve 19, which is connected to the low-pressure cavity of the final-stage pressure cavity. Among adjacent two-stage pressure chambers, the medium-pressure chamber at the front stage communicates with the high-pressure chamber at the rear stage, the low-pressure chamber at the front stage communicates with the medium-pressure chamber at the rear stage, and the gas flows from the first-stage pressure chamber to the final stage. The stage pressure chambers flow step by step, and part of the medium-pressure gas in the medium-pressure chamber of the first-stage pressure chamber is used as a product, and the other part is passed into the high-pressure chamber of the subsequent stage pressure chamber adjacent to it.

Through the above-mentioned multi-level feedback method, the gas pressure in the high-pressure chambers of each level decreases step by step, the gas pressure in the medium-pressure chambers of each level decreases step by step, and the gas pressure in the low-pressure chambers of each level decreases step by step. When the pressure of the first-stage high-pressure gas fed into the high-pressure intake valve 18 is far greater than the pressure of the last-stage low-pressure gas fed into the low-pressure intake valve 19, through the above-mentioned multi-stage feedback method, it can be realized that the pressure from the low-pressure intake valve The low-pressure gas introduced by 19 is pressurized step by step, and finally converted as the first-stage low-pressure gas with the first-stage pressure chamber and the first-stage high-pressure gas that is passed into the first-stage pressure chamber through the high-pressure inlet valve 18 to obtain the first-stage middle pressure gas. compressed air.

Multi-level feedback can realize the step-by-step pressurization of low-pressure gas, and can decompose the overall large expansion ratio into multi-level smaller expansion ratios, while ensuring a high ejection rate, it can also avoid the waste of high-pressure gas energy; Overcoming the limitation of the expansion ratio and compression ratio of the traditional gas wave ejector, when the pressure of the injected gas is the same, a higher pressure medium-pressure gas production can be obtained, so that the equipment has a wider application range and higher isentropic efficiency .

In the above-mentioned embodiment, the supercharging part includes the rotor 2 and the transmission shaft 4, the rotor 2 can rotate coaxially with the transmission shaft 4, the side wall of the rotor 2 is provided with a plurality of oscillating tubes 3 at intervals along its circumference, and each oscillating tube 3 The axial direction is parallel to the axial direction of the rotor 2, and the medium-pressure chambers of the pressure chambers of each stage are set at one end of the oscillating tube 3, and the high-pressure chambers and low-pressure chambers of the various pressure chambers are set at the other end of the oscillating tube 3. The transmission shaft 4 drives the rotor 2 to rotate so that the oscillating tube 3 communicates with the high-pressure chamber, medium-pressure chamber and low-pressure chamber of each stage of pressure chambers step by step from the first-stage pressure chamber to the final-stage pressure chamber.

In detail, the transmission shaft 4 drives the rotor 2 to rotate so that the oscillating tube 3 communicates with the high-pressure chamber, medium-pressure chamber and low-pressure chamber of the first-stage pressure chamber in turn, and then communicates with the high-pressure chamber, medium-pressure chamber and low-pressure chamber of the second-stage pressure chamber in turn. The low-pressure chamber communicates with the high-pressure chamber, medium-pressure chamber and low-pressure chamber of the third-stage pressure chamber in turn until it communicates with the high-pressure chamber, medium-pressure chamber and low-pressure chamber of the final-stage pressure chamber. When the oscillating tube 3 is in communication with the high-pressure chamber, the high-pressure gas in the high-pressure chamber is injected into the oscillating tube 3 and compresses the original gas in the oscillating tube 3, so that the original gas in the oscillating tube 3 is upgraded to medium-pressure gas. When the pressure chamber is connected, the medium-pressure gas inside will enter the medium-pressure chamber, and because the high-pressure incident gas expands and does work, the pressure on the side of the oscillation tube facing the high-pressure chamber and the low-pressure chamber is lower at this time. When the oscillation pipe 3 and the low-pressure chamber When connected, the low-pressure gas in the low-pressure chamber is injected into the oscillating tube 3, thereby completing the injection pressurization process of the pressure chamber of the same stage. The principle of injection pressurization described above is well known to those skilled in the art, and will not be repeated here to save space.

Of course, in this embodiment, the supercharger can also be set as a supercharging device with the same number of stages as the pressure chamber. The high-pressure gas in the high-pressure chamber and the low-pressure gas in the low-pressure chamber are converted into medium-pressure gas in the medium-pressure chamber. However, the air wave supercharging device provided by the above embodiments can realize feedback through cooperation of a single rotor 2 with pressure chambers of various stages, which saves manufacturing costs, optimizes the overall size of the equipment, and reduces the occupied area.

In the above-mentioned embodiments, the section of each oscillating tube 3 along its length direction is the same. Here, the same cross-section means that both the shape and the size are the same. Specifically, the sections of all the oscillation tubes 3 of the same rotor 2 are the same, and the section of the same oscillation tube 3 along its length direction is also the same, and there is no diameter change. It is ensured that the supercharging part can realize air wave supercharging stably. In addition, the number of oscillating tubes 3 in this embodiment is 20-300, and the length is 100-1000 mm, so as to ensure the air wave supercharging effect of the supercharging part. Of course, the length and quantity of the oscillating tube 3 are not required, and can be set according to specific usage requirements and the size of the rotor 2 .

In the above-mentioned embodiment, the high-pressure chamber, the medium-pressure chamber and the low-pressure chamber of each stage of the pressure chamber are respectively provided with nozzles 1 communicating with them. The small-diameter end of the cone segment is arranged toward the oscillating tube 3 and can be connected to the oscillating tube 3 . The gas in the pressure chamber enters the oscillating tube 3 after transitioning through the cone section, which can reduce energy loss. Specifically, the nozzle 1 may only include a cone section or may include a cone section and a straight section, wherein the straight section is arranged toward the oscillating tube 3 .

In the above embodiment, the side wall of the rotor 2 is provided with a plurality of axial through holes, and the through holes form the above-mentioned oscillating tube 3, or, in this embodiment, the oscillating tube 3 can also be set to be connected to the side wall of the rotor 2 The tubular structure of the rotor 2, and the solution of setting the through hole of the side wall of the rotor 2 as the oscillation tube 3 can simplify the overall structure and make the overall structure more regular.

In the above embodiment, the rotor 2 includes an inner sleeve 21 and a wave rotor 22 sleeved outside the inner sleeve 21. A cavity is provided between the wave rotor 22 and the inner sleeve 21. The inner sleeve 21 is connected to the wave rotor 22 and the transmission shaft 4. Fixed connection, the oscillating tube 3 is arranged on the side wall of the wave rotor 22 . That is to say, in this embodiment, the rotor 2 is set as a split structure, of course, the rotor 2 can also be set as an integral structure, and the rotor 2 is set as the structure of the inner sleeve 21 and the wave rotor 22, and the inner sleeve The scheme of being provided with a cavity between 21 and wave rotor 22 can reduce the weight of the rotor 2, which makes the overall structure lightweight and economical.

In the above embodiment, the number of pressure chambers is set to two stages. At this time, the first pressure chamber includes a high pressure chamber H1, a medium pressure chamber M1 and a low pressure chamber L1, and the final pressure chamber includes The final high-pressure chamber H0, the final medium-pressure chamber M0 and the final low-pressure chamber L0. At this time, the transmission shaft 4 drives the rotor 2 to rotate, so that the oscillation tube 3 is sequentially connected with the first-stage high-pressure chamber H1, the first-stage medium-pressure chamber M1, and the first-stage low-pressure chamber. The first-stage low-pressure chamber L1, the final-stage high-pressure chamber H0, the final-stage medium-pressure chamber M0, and the final-stage low-pressure chamber L0 are in communication.

The first-stage medium-pressure chamber M1 communicates with the final-stage high-pressure chamber H0, so that part of the medium-pressure gas in the first-stage medium-pressure chamber M1 is used as a product, and the other part is passed into the final-stage high-pressure chamber H0 as the final-stage high-pressure gas, thereby controlling the final stage. The pressure ratio between the high-pressure gas and the injected low-pressure gas (low-pressure gas in the final stage) achieves the effect of increasing the injection rate. The medium-pressure gas in the chamber M0 is passed into the first-stage low-pressure chamber L1 as the first-stage low-pressure gas, so that the final-stage low-pressure gas is compressed and boosted to obtain a higher-pressure final product, that is, the first-stage medium-pressure gas. The air wave supercharging device can decompose the expansion ratio into two smaller expansion ratios, and has a wide application range, and it is easier to obtain higher isentropic efficiency under a large expansion ratio.

Of course, in this embodiment, the number of stages of the pressure chamber can also be set to three or more stages, which is not specifically limited here, and can be set according to the expansion ratio and the supercharging efficiency of the supercharging part. Taking the number of pressure chambers as three stages as an example, the second stage pressure chamber includes the secondary high pressure chamber H2, the secondary medium pressure chamber M2 and the secondary low pressure chamber L2, as shown in Figure 2, at this time, the primary pressure chamber The cavity M1 is connected with the secondary high-pressure cavity H2, so that part of the medium-pressure gas in the primary medium-pressure cavity M1 is used as a product, and the other part is passed into the secondary high-pressure cavity H2 as a secondary high-pressure gas, and the secondary medium-pressure cavity M2 is connected with the final stage The high-pressure chamber H0 is connected, so that the secondary medium-pressure gas is passed into the final high-pressure chamber H0 as the final high-pressure gas, and the final medium-pressure chamber M0 is connected with the secondary low-pressure chamber L2, so that the final medium-pressure gas is passed into the secondary low-pressure chamber The interior of L2 is used as the second-level low-pressure gas, and the second-level medium-pressure chamber M2 communicates with the first-level low-pressure chamber L1, so that the second-level medium-pressure gas passes into the first-level low-pressure chamber L1 as the first-level low-pressure gas, thereby decomposing the expansion ratio into three levels. Small expansion ratio.

Specifically, when the number of stages of the pressure chamber is two, it can meet the requirements under normal working conditions, and can ensure the ejection rate and isentropic efficiency under a large expansion ratio. Compared with the structure with three stages of pressure chambers, The overall structure can be simplified, the consumption can be reduced, and the economy is good.

Taking the number of pressure chambers as two stages as an example, the working process of each air wave supercharging device is introduced in detail as follows:

(1) The rotation of the transmission shaft 4 drives the rotor 2 to rotate, and the rotor 2 makes the bottom ends of the oscillation tubes 3 communicate with the first-stage high-pressure chamber H1 in sequence during the rotation, and the high-pressure gas in the first-stage high-pressure chamber H1 is injected into the oscillation pipe 3 Inside, compress the original gas in the oscillating tube 3, so that the original gas in the oscillating tube 3 is boosted to a first-stage medium-pressure gas;

(2) The rotor 2 drives the oscillating tube 3 to continue to rotate to the top (the end facing the side of the medium-pressure chamber) and when it is connected to the first-stage medium-pressure chamber M1, the first-stage medium-pressure gas in the oscillating tube 3 enters the first-stage medium-pressure chamber. Chamber M1, a part of the first-stage medium-pressure gas in the first-stage medium-pressure chamber M1 is output from the output pipe as the final product, and the other part is transferred to the final high-pressure chamber H0 as the feedback gas through the pipeline;

(3) The rotor 2 continues to rotate, and the bottom end of the oscillating tube 3 (the end facing the high-pressure chamber and the low-pressure chamber side) is connected to the first-stage low-pressure chamber L1. Due to the expansion and work of the high-pressure incident gas in the oscillating tube 3, this When the pressure in the lower part of the oscillating tube 3 is low, the first-stage low-pressure gas in the first-stage low-pressure chamber L1 is injected into the oscillating tube 3, thus completing the first-stage injection pressurization process;

(4) The rotor 2 continues to rotate, and the bottom end of the oscillating tube 3 is connected to the final high-pressure chamber H0. At this time, the feedback gas in the final high-pressure chamber H0 is injected into the oscillating tube 3 to compress the gas in the oscillating tube 3, so that The gas in the oscillating tube 3 is pressurized to be the final stage medium-pressure gas;

(5) The rotor 2 continues to rotate until the oscillating tube 3 is connected to the final medium-pressure chamber M0, the gas on the upper part of the oscillating tube 3 enters the final medium-pressure chamber M0, and the final medium-pressure gas in the final medium-pressure chamber M0 passes through The pipeline leads into the first-level low-pressure cavity L1 to become the injected gas (first-level low-pressure gas) during the first-level injection pressurization process;

(6) The rotor 2 continues to rotate until the bottom of the oscillating tube 3 is connected to the final low-pressure chamber L0. Due to the expansion of the feedback gas, the pressure in the lower part of the oscillating tube 3 is relatively low at this time, and the pressure in the final low-pressure chamber L0 is reduced. The injected low-pressure gas is injected into the oscillating tube 3, thereby completing the last-stage injection pressurization process and realizing the injection of low-pressure gas.

Through the above-mentioned pressurization process, the pressure of the high-pressure gas source (the first-stage high-pressure gas fed by the high-pressure intake valve 18) can be fully utilized. Traditional air wave ejectors produce medium pressure gas with higher pressure (one-stage medium-pressure gas) to improve isentropic efficiency, and achieve high injection rate injection under large expansion ratio through the way of one-stage medium-pressure gas feedback injection.

In the above embodiment, the air wave supercharging device also includes a housing 6 and a fixed base 10 fixed to the bottom of the housing 6, the rotor 2 is arranged in the housing 6 and is located at the bottom of the housing 6; the fixed base 10 There are high-pressure chambers and low-pressure chambers of various pressure chambers. As shown in Figure 7, when the number of stages of pressure chambers is two, the fixed base 10 is provided with a high-pressure chamber (first-stage high-pressure chamber H1) and a low-pressure chamber (first-stage low-pressure chamber L1) of the first-stage pressure chamber and a final stage The high-pressure chamber of the pressure chamber (the final high-pressure chamber H0) and the low-pressure chamber (the final low-pressure chamber L0), and the fixed seat 10 is also provided with four nozzles 1 communicating with the above four pressure chambers, and the rotor 2 is arranged in the housing 6 and the rotation of the rotor 2 can drive the bottom end of the oscillating tube 3 to connect with the nozzles 1 of the fixed seat 10.

Of course, in this embodiment, the high-pressure chambers and low-pressure chambers of the pressure chambers at all levels can also be arranged on the external structure, and the fixed seat 10 is only provided with nozzles 1 communicating with the high-pressure chambers and low-pressure chambers so that the oscillation tube 3 can be rotated during rotation. It only needs to be able to connect with each nozzle 1, and the solution of setting the fixing seat 10 to have various high-pressure chambers and low-pressure chambers can simplify the overall structure, make the overall structure more regular, and occupy a small volume.

In the above-mentioned embodiment, the air wave supercharging device further includes a fixed shaft 11 and an adjustment cover 15, wherein the rotor 2 (inner sleeve 21) is rotatably sleeved on the outside of the fixed shaft 11 and between the rotor 2 and the fixed shaft 11 There is an axial limiter between them, so that the axial positions of the rotor 2 and the fixed shaft 11 are relatively fixed. The bottom end of the fixed shaft 11 passes through the fixed seat 10 and is fixed with the adjusting cover 15. The adjusting cover 15 and the fixed seat 10 are connected by bolts. For fixing, the upper end surface of the adjusting cover 15 is provided with a stepped structure 151 (as shown in FIG. 4 ) that fits with the lower shoulder of the bottom of the fixed shaft 11 .

Specifically, in this embodiment, the adjustment cover 15 can be set as an integral structure, or it can be set as a split structure, which is not specifically limited here. As shown in Figure 1, the adjustable cover 15 of the split structure includes an adjusting flange and a first gland, wherein the adjusting flange is provided with the above-mentioned step structure and is fixedly connected with the fixing seat 10, and the first gland abuts the adjusting flange The bottom is fixedly connected with the fixed shaft 11.

During installation, a spacer can be added between the step structure 151 and the lower shoulder to increase the gap between the upper end surface of the fixing seat 10 and the lower end surface of the rotor 2. Specifically, before installing the adjustment cover 15, the step structure 151 and the lower shaft shoulder after placing a gasket and fixing the adjusting cover 15 to the fixed seat 10 and the fixed shaft 11, since the relative position between the adjusting cover 15 and the fixed seat 10 is fixed, the fixed shaft 11 is relatively fixed to the fixed seat. 10 moves upward, due to the effect of the axial stopper, the fixed shaft 11 drives the rotor 2 to move upward relative to the fixed seat 10, thereby increasing the gap between the upper end surface of the fixed seat 10 and the lower end surface of the rotor 2.

At the same time, a gasket can also be added between the adjustable cover 15 (adjusting flange) and the fixed seat 10 to reduce the gap between the upper end surface of the fixed seat 10 and the lower end surface of the rotor 2. Specifically, between the adjustable cover 15 , after adding a gasket between the adjusting cover 15 and the fixed seat 10 and fixing the adjusting cover 15 with the fixed seat 10 and the fixed shaft 11, since the relative position between the adjusting cover 15 and the fixed shaft 11 is fixed, the fixed seat 10 Move upward relative to the fixed shaft 11 and approach the rotor 2 , thereby reducing the gap between the upper end surface of the fixed seat 10 and the lower end surface of the rotor 2 .

That is to say, the gap between the upper end surface of the fixing seat 10 and the lower end surface of the rotor 2 can be adjusted externally, and the installation and operation are convenient. Specifically, the gap between the lower surface of the support plate and the upper surface of the rotor 2 is 0.1mm-5mm, so as to ensure that the rotor 2 can rotate smoothly.

In the above embodiment, as shown in FIG. 6, the axial limiting member includes a first bearing set and a bearing cover 16, the first bearing set is arranged between the rotor 2 and the fixed shaft 11, and the first bearing set The two ends abut against the bearing gland 16 and the steps of the inner wall of the rotor (2) respectively. Specifically, the bearing gland 16 includes a first bearing gland 161 and a second bearing gland 162, and the first bearing group includes an angular contact bearing 121, a deep groove ball bearing 122, and a connection between the contact bearing 121 and the deep groove ball bearing 122. Among them, the deep groove ball bearing 122 abuts against the step of the inner wall of the rotor (2), the two ends of the outer ring of the angular contact bearing 121 respectively abut the bearing sleeve 123 and the second bearing gland 162, and the angular contact The inner ring of the bearing 121 is fixed to the shoulder on the top of the fixed shaft 11 through the first bearing cover 161 .

Of course, there is no limitation on the specific structure of the above-mentioned axial limiting member, as long as it can ensure the axial relative fixation of the rotor 2 and the fixed shaft 11 . The first bearing group is arranged between the fixed shaft 11 and the rotor 2, which can provide a restriction on the rotation of the rotor 2 and make its rotation more stable.

In the above-mentioned embodiment, the gas wave supercharging device also includes a support plate 5 arranged in the casing 6 and a top cover 7 arranged at the top end of the casing 6. The support plate 5 includes a sleeve 93 and is fixedly connected to the sleeve. The first partition 91 and at least one second partition 92, wherein the sleeve 93 is rotatably sleeved on the outside of the transmission shaft 4, and the first partition 91, the top cover 7 and the housing 6 enclose to form a cavity , the second partition 92 divides the cavity into medium-pressure chambers of pressure chambers of various stages, and the number of the second partition 92 is one less than the number of stages of the pressure chambers. The first partition 91 is provided with nozzles 1 communicating with each medium-pressure chamber. Taking the case where the number of pressure chambers is two, the second partition 92 divides the cavity into a first-stage medium-pressure chamber M1 and a final-stage medium-pressure chamber M0, and the first partition 91 is provided with The nozzle 1 of the first-stage medium-pressure chamber M1 connected at the top and the nozzle 1 of the last-stage medium-pressure chamber M0.

Specifically, the second partition plate 92 in this embodiment separates the first-stage medium-pressure chamber M1 and the final-stage medium-pressure chamber M0 into upper and lower two-layer structures. The final medium-pressure chamber M0 is located on the upper layer, and the first-stage medium-pressure chamber M1 can also be set on the upper layer, which is not limited here) and a guide channel 14 is provided between the nozzle 1 connected to it. Of course, the The first-stage medium-pressure chamber M1 and the last-stage medium-pressure chamber M0 can be divided into cavities arranged side by side with the same height, etc., and there is no limitation here, and the details can be set according to the pipeline layout and so on.

In the above-mentioned embodiment, the air wave supercharging device also includes a second adjustment member, the second adjustment member includes a cover plate 8 and a second gland 17, the lower surface of the cover plate 8 is provided with a flange 81 along its circumference, and the cover The plate 8 and the top cover 7 are fixedly connected by bolts, the second gland 17 is rotatably sleeved on the outside of the transmission shaft 4, the second gland 17 is fixedly connected with the support plate 5, and the top end of the second gland 17 protrudes from the top. The cover 7 is fixedly connected with the cover plate 8 .

During installation, the gap between the lower end surface of the support plate 5 and the upper end surface of the rotor 2 can be increased by adding a gasket between the flange 81 and the top cover 7. Specifically, before installing the cover plate 8, according to the specific size Add gasket between flange 81 and top cover 7, install cover plate 8 and make it press gasket and be affixed with top cover 7 and cover plate 8, make the lower surface of cover plate 8 and the second gland 17 The upper surface abuts, due to the addition of gaskets, the distance between the lower surface of the cover plate 8 and the top cover 7 increases, and the top cover 7 and the rotor 2 are relatively fixed, so the cover plate 8 is relatively fixed to the rotor 2. In other words, the second cover 17 and the support plate 5 also move up with the cover plate 8 , thereby increasing the gap between the lower surface of the support plate 5 and the upper surface of the rotor 2 .

At the same time, the gap between the lower end surface of the support plate 5 and the upper end surface of the rotor 2 can also be reduced by adding a gasket between the second gland 17 and the cover plate 8. Specifically, before installing the cover plate 8, according to The specific size situation adds gaskets between the second gland 17 and the cover plate 8, and the cover plate 8 is installed to make it compress the gasket and be fixedly connected with the top cover 7 and the cover plate 8. At this time, the cover plate 8, the top cover The relative position between 7 and the rotor 2 has not changed, but due to the addition of gaskets, the second gland 17 has moved down relative to the cover plate 8, and the rotor 2 has also moved down with the second gland 17. In turn, the gap between the lower surface of the support plate 5 and the upper surface of the rotor 2 is reduced.

That is to say, the gap between the upper end surface of the rotor 2 and the lower end surface of the support plate 5 can be adjusted externally, and the installation and operation are convenient. Specifically, the gap between the lower surface of the support plate 5 and the upper surface of the rotor 2 is 0.1mm-5mm, so as to ensure that the rotor 2 can rotate smoothly.

Further, a second bearing set 13 is also provided between the sleeve 93 and the transmission shaft 4 , and the second bearing set 13 provides a constraint on the transmission shaft 4 to make its rotation more stable.

In the above embodiment, as shown in FIG. 5 , the upper surface of the top cover 7 is also provided with an annular protrusion 71, which is located between the flange 81 and the outer wall of the second gland 17, and the annular protrusion 71 The inner wall of 71 is in contact with the outer wall of the second gland 17, and the setting of the annular protrusion 71 increases the contact surface between the top cover 7 and the second gland 17, thereby increasing the bearing capacity of the middle part of the top cover 7, Avoid the situation that the middle part of the top cover 7 is deformed when the gasket is added and the cover plate 8 is installed. Moreover, when a gasket is added between the top cover 7 and the cover plate 8, the setting of the annular protrusion 71 is also convenient to limit the gasket, that is, the gasket can be directly sleeved on the outside of the annular protrusion 71, Easy to operate. The height of this annular protrusion 71 is less than the height that the second gland 17 protrudes from the top cover 7, to ensure that the lower end surface of the cover plate 8 and the upper end surface of the second gland 17 can abut, and can also pass through the annular protrusion. A spacer is added between the riser 71 and the cover plate 8 to increase the gap between the upper end surface of the rotor 2 and the lower end surface of the support plate 5 .

The above are only preferred embodiments of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the present invention, and these improvements and modifications should also be considered Be the protection scope of the present invention.

Claims (14)

1. A gas wave supercharging device, characterized in that it comprises a supercharging portion and at least two pressure chambers arranged in sequence, the pressure chambers of each stage comprise a high pressure chamber, a medium pressure chamber and a low pressure chamber respectively, the first stage pressure chamber The high-pressure chamber of the chamber is connected with the high-pressure intake valve (18), and the low-pressure chamber of the final pressure chamber is connected with the low-pressure intake valve (19); The pressurized part is used to transfer energy through pressure waves to convert the high-pressure gas in the high-pressure chamber and the low-pressure gas in the low-pressure chamber of the same level into medium-pressure gas in the medium-pressure chamber; Among the pressure chambers of the two adjacent stages, the medium-pressure chamber in the front stage communicates with the high-pressure chamber in the subsequent stage, and the low-pressure chamber in the preceding stage communicates with the medium-pressure chamber in the latter stage; Wherein, part of the medium-pressure gas in the medium-pressure chamber of the first-stage pressure chamber is used as a product, and the other part is passed into the high-pressure chamber of the subsequent stage pressure chamber adjacent to it. 2. The air wave supercharging device according to claim 1, characterized in that, the supercharging part comprises a transmission shaft (4) and a rotor (2) coaxially rotating with the transmission shaft (4), the The side wall of the rotor (2) is provided with a plurality of oscillating tubes (3) at intervals along its circumference, the axial direction of each oscillating tube (3) is parallel to the axial direction of the rotor (2), and the pressure of each stage is The middle pressure chamber of the chamber is located at one end of the oscillation tube (3), and the high pressure chamber and the low pressure chamber of the pressure chambers at each level are located at the other end of the oscillation tube (3); The transmission shaft (4) drives the rotor (2) to rotate so that the oscillating tube (3) is successively connected with the high-pressure chamber, medium-pressure chamber and The low pressure chamber is connected. 3. The air wave supercharging device according to claim 2, characterized in that, the sections of the oscillation tubes (3) along their length direction are the same. 4. The air wave supercharging device according to claim 2, characterized in that, the high-pressure chamber, the medium-pressure chamber and the low-pressure chamber of the pressure chambers at each stage are respectively provided with nozzles (1) communicating with them, and the nozzles (1) includes a cone section, the large-diameter end of the cone section is arranged towards the pressure chamber, and the small-diameter end of the cone section is arranged towards the oscillation tube (3) and can be connected with the oscillation tube (3) ) is connected. 5. The air wave supercharging device according to claim 2, characterized in that, the side wall of the rotor (2) is provided with a plurality of axial through holes, and the axial through holes form the oscillating tube (3 ). 6. The air wave supercharging device according to claim 2, characterized in that, the rotor (2) comprises an inner sleeve (21) and a wave rotor (22) sleeved outside the inner sleeve (21), A cavity is provided between the wave rotor (22) and the inner sleeve (21), the inner sleeve (21) is fixedly connected to the wave rotor (22) and the transmission shaft (4), and the The oscillating tube (3) is arranged on the side wall of the wave rotor (22). 7. The air wave supercharging device according to any one of claims 2-6, characterized in that, the number of stages of the pressure chamber is two. 8. The air wave supercharging device according to any one of claims 2-6, characterized in that it further comprises a housing (6) and a fixing seat (10) fixed to the bottom end of the housing (6) , the rotor (2) is located in the housing (6); The fixed seat (10) is provided with a high-pressure chamber and a low-pressure chamber of the pressure chambers of various stages. 9. The air wave supercharging device according to claim 8, characterized in that it further comprises a fixed shaft (11) and an adjustment cover (15), and the rotor (2) is rotatably sleeved on the fixed shaft ( 11), and an axial stopper is provided between the rotor (2) and the fixed shaft (11); The bottom end of the fixed shaft (11) passes through the fixing seat (10) and is fixed with the adjusting cover (15), and the adjusting cover (15) and the fixing seat (10) are fixed by bolts; The upper end surface of the adjusting cover (15) is provided with a stepped structure (151) adapted to the lower shoulder of the bottom of the fixed shaft (11). 10. The air wave supercharging device according to claim 9, characterized in that, the axial limiting member comprises a first bearing set and a bearing cover (16); the first bearing set is arranged on the rotor (2) and the fixed shaft (11), the two ends of the first bearing group abut against the bearing gland (16) and the steps of the inner wall of the rotor (2) respectively. 11. The air wave supercharging device according to claim 8, characterized in that it further comprises a support plate (5) arranged in the casing (6) and a top end arranged at the top of the casing (6). Cover (7), the support plate (5) includes a sleeve (93) and a first partition (91) and at least one second partition (92) affixed to the sleeve (93), the The sleeve (93) is rotatably sleeved on the outside of the transmission shaft (4), and the first partition (91), the top cover (7) and the housing (6) enclose to form a hollow space. cavity, and the second partition (92) separates the cavity into medium-pressure chambers of the pressure chambers of various stages. 12. The air wave supercharging device according to claim 11, characterized in that it further comprises a second adjustment member, the second adjustment member includes a cover plate (8) and a second gland (17), the cover The lower surface of the plate (8) is provided with a flange (81) along its circumference, and the cover plate (8) and the top cover (7) are fixed by bolts, and the second gland (17) is rotatable Sleeved on the outside of the transmission shaft (4), the second gland (17) is fixedly connected to the support plate (5), and the top end of the second gland (17) protrudes from the top cover (7) and fixedly connected with the cover plate (8). 13. The air wave supercharging device according to claim 12, characterized in that, a second bearing group (13) is further provided between the sleeve (93) and the transmission shaft (4). 14. The air wave supercharging device according to claim 12, characterized in that, the upper surface of the top cover (7) is also provided with an annular protrusion (71), and the annular protrusion (71) is located on the between the flange (81) and the outer wall of the second gland (17), and the height of the annular protrusion (71) is not greater than that of the second gland (17) protruding from the top cover (7 )the height of.