CN115970392A - A desander with multiple connecting pipelines - Google Patents

Abstract

The invention discloses a desander with a plurality of connecting pipelines, which comprises a desander, wherein the desander is arranged on a desander pry, a produced gas inlet is formed in the right side of the upper part of the desander, a produced gas outlet is formed in the left side of the middle part of the desander, and a produced gas inlet and outlet pipeline is connected between the produced gas inlet and the produced gas outlet of the desander; the lower part of the desander is provided with a sand washing port, the sand washing port is positioned at the lower part between the produced gas inlet and the produced gas outlet, and the sand washing port of the desander is connected with a sand washing pipeline; the upper part of the sand remover is provided with a safety valve port, and a safety pipeline is connected to the safety valve port; the lower part of the desander is also provided with a sand discharge port and a sewage discharge port, the sand discharge port is connected with a sand discharge pipeline, the sewage discharge port is provided with a sewage discharge pipeline, and the sand discharge pipeline and the sewage discharge pipeline are connected in parallel. This device adopts the cooperation of desander and multiple pipeline, gets rid of the solid particle in the fluid, and dispersion desander panel internal stress is concentrated, reduces the sediment situation of pressing from both sides, optimizes the sand discharge pipeline and then promotes the separation effect.

Description

A desander with multiple connecting lines

technical field

The invention relates to the technical field of desanders, in particular to a desander with multiple connecting pipelines.

Background technique

The desander is made according to the screening principle of solid particles in the fluid when they rotate in the desander. It integrates swirl flow and filtration, and realizes sand removal, gas-liquid, and solid-liquid separation in the field of natural gas exploitation. The liquid level of the desander is controlled and adjusted by an electric regulating valve. The desander is installed on the tank with a safety valve, and the spring-loaded safety valve will automatically pop up to release the pressure if there is an abnormal situation. The desander is equipped with a complete manifold system, which is easy to operate, and the butt flanges of the inlet and outlet of all manifolds use long and high-necked flanges integrating flanges and connecting pipes to realize the overall reinforcement structure. During the use of the existing desander, the plate is easy to contain slag, which leads to the concentration of internal stress in the plate, which further damages the desander, makes the separation effect unsatisfactory, and further affects the service life of the desander.

Contents of the invention

In view of the deficiencies in the above-mentioned background technology, the present invention proposes a desander with multiple connecting pipelines, which solves the problem of the separation effect caused by the slag inclusion of the desander in the prior art, the internal stress concentration of the plate, and the easy damage of the sand discharge pipe. Not ideal problem.

The technical solution of the present invention is realized as follows: a desander with multiple connecting pipelines, including a desander, the desander is installed on the desander skid, and the upper side of the desander is provided with a mining Gas outlet, the left side of the middle part of the desander is provided with a produced gas outlet, and a produced gas inlet and outlet pipeline is connected between the produced gas inlet and the produced gas outlet of the desander; The port is located at the lower part between the inlet of the produced gas and the outlet of the produced gas. The sand washing port of the desander is connected with a sand flushing pipeline; the upper part of the desander is provided with a safety valve port, and the safety valve port is connected with a safety pipeline; A sand discharge port and a sewage discharge port are provided. The sand discharge port is connected with a sand discharge pipeline, and the sewage discharge port is provided with a sewage discharge pipeline. The sand discharge pipeline and the sewage discharge pipeline are connected in parallel; It is set on the desander skid, and the ends of the produced gas inlet and outlet pipelines, sand washing pipelines, sand discharge pipelines and sewage pipelines are all set on the same horizontal line.

Further, the produced gas inlet and outlet pipelines include a connection port 1 and a connection port 2, the connection port 1 is connected to the produced gas inlet, and the connection port 2 is connected to the produced gas outlet; a valve 1 is provided between the connection port 1 and the connection port 2 , valve 2 and valve 3, valve 1 is set at the inlet of the produced gas, valve 3 is set at the outlet of the produced gas, valve 2 is set between valve 1 and valve 3, and valve 1, valve 2 and valve 3 are connected by pipelines Form a U-shaped safety pipeline structure.

Further, the safety pipeline includes connection port three connected to the safety valve port, the pipeline where the connection port three is located is provided with valve four, stop valve, valve six, safety valve and valve five, valve four, stop valve, valve six, The safety valve and valve five are sequentially connected through pipelines to form a frame-shaped safety pipeline structure. Valve four and valve six are symmetrically arranged on both sides of the frame-shaped safety pipeline structure. The stop valve is arranged at the lower part of the frame-shaped safety pipeline structure. Wuhe safety valve is located on the upper part of the frame safety pipeline structure.

Further, the sand discharge pipeline includes connection port 4, connection port 5 and sand discharge outlet, connection port 4 is connected to the sand discharge port, connection port 5 is connected to the sewage pipeline, and connection port 4 and connection port 5 are connected in sequence. There are valve seven, valve eight and the first blowdown valve, the sand discharge port is set between valve seven and valve eight, and the first ball valve is arranged on the pipeline where the sand discharge port is located.

Further, the sewage pipeline includes connection port 6 and connection port 7, connection port 6 is connected to the sand flushing port, connection port 7 is connected to connection port 5, and two parallel connection ports are arranged between connection port 6 and connection port 7. Pipeline, the upper pipeline is provided with valve nine, electric ball valve, electric control valve and the second blowdown valve in turn, and the lower pipeline is set with valve ten and the third blowdown valve in turn.

Further, the sand washing pipeline includes a connection port No. 8 and a sand washing outlet. The connection port No. 8 is connected to the sand washing outlet. A valve eleven and a second ball valve are arranged between the connection port No. 8 and the sand washing outlet.

Further, the desander includes a cylinder, the lower part of the cylinder is provided with an oval head and a support seat, the sand discharge port is located at the lower part of the oval head, and the upper part of the cylinder is provided with a quick-opening blind plate; There is a screen cylinder, which is connected to the inside of the cylinder through the fixed structure of the screen cylinder. The lower part of the screen cylinder is provided with a seamless elbow, which is connected to the outlet of the produced gas; The structure is located below the outlet of the produced gas; the cylinder body is also equipped with a tuning fork liquid level switch port, a hand hole and a liquid level gauge port. The inside of the quick opening blind plate is provided with an O-ring matched with the cylinder.

Further, the screen cylinder includes a screen cylinder body, the lower part of the screen cylinder body is provided with a tray, and the upper part of the screen cylinder body is connected with a fixing plate, and the fixing plate is connected with a connecting plate provided inside the cylinder body through a locking piece. The lower part of the screen cylinder body is provided with a sealing rubber ring matched with the tray.

The beneficial effects of the present invention are: the device uses a desander to cooperate with various pipelines to remove solid particles in the fluid, disperse the internal stress concentration of the desander plate, reduce slag inclusion, optimize the sand discharge pipeline and improve the separation effect . The sewage pipeline increases the safe operation of the equipment; the solid medium in the sand discharge pipeline is discharged through the quick connector, which effectively avoids the impact on the cleanliness of the product due to the increase in sand content; the safety pipeline effectively avoids the safety problems caused by the failure of the safety valve; The medium in the inlet and outlet pipelines can go directly to the next process without passing through the desander, which effectively avoids damage to the desander; the inside of the sand flushing pipeline equipment is flushed. The combination of multiple valves used in the desander skid can not only effectively solve emergencies during operation, increase the safety of the equipment, but also realize semi-intelligent control.

Description of drawings

In order to illustrate the embodiments of the present invention more clearly, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. As far as the skilled person is concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the top view of the present invention;

Fig. 3 is a side view of Fig. 2;

Fig. 4 is the connection schematic diagram of safety pipeline;

Figure 5 is a schematic diagram of the connection of the produced gas inlet and outlet pipelines;

Fig. 6 is the connection schematic diagram of sewage pipeline;

Fig. 7 is the connection schematic diagram of sand discharge pipeline;

Fig. 8 is the connection schematic diagram of sand flushing pipeline;

Fig. 9 is the structural representation of desander;

Figure 10 is a schematic structural view of A-A in Figure 9;

Figure 11 is a side view of the desander;

Fig. 12 is the structural representation of sieve cylinder;

FIG. 13 is a top view of FIG. 12 .

In the figure: 1. Safety pipeline, 11. Connection port three, 12. Valve four, 13. Globe valve, 14. Valve six, 15. Safety valve, 16. Valve five, 2. Desander, 21. Oval seal Head, 22, cylinder, 23, sieve cylinder, 231, sieve cylinder, 232, sealing rubber ring, 233, tray, 234, connecting plate, 235, fixing plate, 236, locking member, 24, flow guiding device, 25. Screen cylinder fixing device, 26. Quick-opening blind plate, 27. Support seat, 28. Seamless elbow, 29. Nameplate, 3. Produced gas inlet and outlet pipelines, 31. Connecting port 1, 32, Valve 1, 33 , valve three, 4, sand flushing pipeline, 41, connection port eight, 42, sand flushing outlet, 43, valve eleven, 44, second ball valve, 51, connection port two, 52, valve two, 6, row Sand pipeline, 61, connection port four, 62, connection port five, 63, sand discharge sand outlet, 64, valve seven, 65, valve eight, 66, first sewage valve, 67, first ball valve, 7, sewage pipeline , 71, connection port six, 72, connection port seven, 73, valve nine, 74, electric ball valve, 75, electric regulating valve, 76, second blowdown valve, 77, valve ten, 78, third blowdown valve, 8, Desander skid, 2-1, safety valve port, 2-2, produced gas inlet, 2-3, produced gas outlet, 2-4, sand washing port, 2-5, sand discharge port, 2-6, sewage discharge Port, 2-7, hand hole, 2-8, tuning fork liquid level switch port, 2-9, liquid level gauge port.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 to 3, embodiment 1, a desander with multiple connecting pipelines, includes a desander 2, the desander 2 is installed on the desander skid 8, and the desander 2 The upper part is provided with a produced gas inlet 2-2, and the produced gas inlet 2-2 is a channel for fluid to enter the desander. The middle part of the desander 22 is provided with a produced gas outlet 2-3, and the produced gas is discharged from the produced gas outlet 2-3, and a produced gas inlet and outlet pipeline is connected between the produced gas inlet 2-2 and the produced gas outlet 2-3 3. The lower part of the desander 2 is provided with a sand washing port 2-4, and the sand washing port 2-4 is an entrance for flushing the sand stored in the desander. Sand washing port 2-4 is connected with sand washing pipeline 4; the upper part of desander 2 is provided with safety valve port 2-1, and safety valve port 2-1 is connected with safety pipeline 1; the lower part of desander 2 is also provided with There are sand discharge port 2-5 and sewage discharge port 2-6, sand discharge port 2-5 is connected with sand discharge pipeline 6, sand discharge port 2-5 is a channel for discharging the particles of the sand remover, and sewage discharge port 2-6 is equipped with The sewage pipeline 7, the liquid separated by the desander is discharged from the sewage outlet 2-6, the sand discharge pipeline 6 and the sewage pipeline 7 are connected in parallel; the produced gas import and export pipeline 3, the sand washing pipeline 4, the sand discharge pipeline 6 and the sewage pipeline 7 They are all arranged on the desander skid 8, and the ends of the produced gas inlet and outlet pipeline 3, the sand washing pipeline 4, the sand discharge pipeline 6 and the sewage pipeline 7 are all arranged on the same horizontal line. The desander skid is mainly used for the wellhead front-end device in the petroleum and petrochemical industry, and the requirements for the pipeline layout are extremely strict. The unified layout is on the side of the skid seat, which is convenient for the docking of the well site pipeline and greatly saves the input of raw materials.

The specific working principle of the desander: when the media enters the equipment from the air inlet of the desander through the flow guide device under a certain pressure, a strong rotational motion is generated. Under the joint action of the force, the liquid with low density rises and is discharged from the sewage outlet. At the same time, the natural gas with low density is filtered through the screen cylinder and discharged from the outlet of the desander, and the sand with high density is deposited at the bottom of the equipment and discharged from the sand discharge port. ,, so as to achieve the purpose of sand removal. 1. In terms of pressure bearing capacity, the wall thickness of the desander designed by our company is 28mm. Through the calculation of the pressure vessel software, the pressure bearing capacity is greater than 10MPa, that is, the pressure of 100 kg. At the same time, the material is made of annealed steel plate, which effectively removes the plate Internal stress concentration and slag inclusion problems.

As shown in Figure 5, in embodiment 2, a desander with multiple connecting pipelines, the produced gas inlet and outlet pipeline 3 includes a connection port 1 31 and a connection port 2 51, and the connection port 1 31 is connected to the produced gas inlet 2 -2 connection, the connection port 2 51 is connected to the produced gas outlet 2-3; the valve 1 32, the valve 2 33 and the valve 3 52 are arranged between the connection port 1 31 and the connection port 2 51, and the valve 1 32 is arranged at the produced gas inlet 2-2, valve three 33 is set at the produced gas outlet 2-3, valve two 33 is set between valve one 32 and valve three 52, and valve one 32, valve two 33 and valve three 52 are connected by pipelines to form U-shaped safety pipeline structure.

The use method of the produced gas inlet and outlet pipeline 3 is: when the equipment is in normal operation, the valve 2 33 is closed, and the valve 32 enters the valve 3 52 and exits. In an emergency, the valve 1 32 and the valve 3 52 can be closed, and the valve 2 33 can be opened directly. Bypass, the medium can go directly to the next process without passing through the desander, effectively avoiding damage to the desander. A differential pressure transmitter is installed at the first connection port 31 and the second connection port 51, and the clogging of the screen cylinder can be judged by detecting the pressure change of the inlet and outlet, and then the appropriate time is selected to clean the screen cylinder, which greatly improves the production efficiency.

As shown in Figure 4, embodiment 3 is a desander with multiple connecting pipelines. The safety pipeline 1 includes the connection port 3 11 connected to the safety valve port 2-1, and the pipeline where the connection port 3 11 is located is provided with There are valve 4 12, stop valve 13, valve 6 14, safety valve 15 and valve 5 16, valve 4 12, stop valve 13, valve 6 14, safety valve 15 and valve 5 16 are sequentially connected through pipelines to form a frame-shaped safety pipe Valve four 12 and valve six 14 are symmetrically arranged on both sides of the frame-shaped safety pipeline structure, the stop valve 13 is arranged at the lower part of the frame-shaped safety pipeline structure, valve five 16 and safety valve 15 are located in the frame-shaped safety pipeline structure upper part of the structure.

The usage of safety pipeline 1 is as follows: when the equipment is in normal operation, valve 4 12 and stop valve 13 are closed, valve 6 14, safety valve 15 and valve 5 16 are open, and valve 5 16 can be closed in an emergency or when the safety valve is overhauled Valve six 14 simultaneously opens valve four 12 and shut-off valve 13, effectively avoiding the safety problem caused by safety valve failure.

As shown in Figure 7, embodiment 4 is a desander with multiple connecting pipelines, the sand discharge pipeline 6 includes connection port four 61, connection port five 62 and sand discharge port 63, connection port four 61 It is connected with the sand discharge port 2-5, the connection port 5 62 is connected with the sewage pipeline 7, and the valve 7 64, the valve 8 65 and the first sewage valve 66 are arranged in sequence between the connection port 4 61 and the connection port 5 62, and the sand is discharged. The sand outlet 63 is arranged between the valve seven 64 and the eight valve 66, and a first ball valve 67 is arranged on the pipeline where the sand discharge sand outlet 63 is located.

The sand discharge pipeline 6 is used in the following way: when the equipment is in normal operation, the process flow can be selected according to the solid-liquid content of the medium. When the liquid content of the medium is large, the first ball valve 67 can be closed, the valve seven 64, the valve eight 65 and the first blowdown valve 66 can be opened, and the liquid finally collects with the blowdown pipe and enters the liquid treatment working condition. When the solid (sand) content of the medium is large, the valve 7 64, valve 8 65 and the first blowdown valve 66 can be closed, and the solid medium is directly discharged from the first ball valve 67 through the quick joint, which effectively avoids the impact caused by the increase of the sand content. Product cleanliness.

As shown in Figure 6, embodiment 5, a desander with multiple connecting pipelines, the sewage pipeline 7 includes connection port six 71 and connection port seven 72, and connection port six 71 is connected to the sand flushing port 2-4 , the connection port seven 72 is connected to the connection port five 62, and two parallel pipelines are arranged between the connection port six 71 and the connection port seven 72, and the upper pipeline is provided with a valve nine 73, an electric ball valve 74, and an electric control valve 75 in sequence. and the second blowdown valve 76, and the lower pipeline is provided with a valve ten 77 and a third blowdown valve 78 in sequence.

The use method of the sewage pipeline 7 is as follows: when the equipment is in normal operation, the third sewage valve 78 and the valve ten 77 are in the closed state, the valve nine 73, the electric ball valve 74, the electric regulating valve 75 and the second sewage valve 76 are in the open state. Sleeve blowdown valve adjusts the pressure before and after the valve. In emergency or maintenance, valve nine 73, electric ball valve 74, electric regulating valve 75 and second blowdown valve 76 can be closed. Electric ball valve and electric regulating valve are used. See sewage discharge process valve 2 and valve 3, and place the electric ball valve at the front end of the electric control valve. When an emergency occurs, the electric ball valve will be cut off through the 24VDC internal power supply to protect the electric control valve from being damaged due to excessive pressure. The valve transmits the signal to the central control room through the 4~20mA, HART protocol to adjust the back-end pressure of the electric control valve, adjust a more reasonable and safe discharge pressure to the back-end equipment, and protect the back-end equipment. Simultaneously open valve ten 77 and the third drain valve 78, greatly increasing the safe operation of equipment. The performance of the valve sleeve type sewage valve adopted is far superior to that of ordinary sewage valves, and its performance is mainly manifested in

The sewage valve is a valve sleeve type sewage valve. When the bottom of the valve disc leaves the sealing surface of the valve seat, since the bottom surface of the valve disc is close to the bottom edge of the opening of the cage sleeve, the valve disc and the inner diameter of the cage sleeve form a seal at this time. Instead of directly venting the air to release the pressure, so as to achieve a mitigation effect. The throttling state of the sleeve type sewage valve: the bottom carbonyl of the valve disc leaves the valve seat and is further opened, and a first-level throttling is formed at the small throttle head, and the high-speed fluid flows directly to the small valve disc after being throttled by slow pressure. On the final throttle surface, when the high-pressure medium directly washes the throttling channel, the bottom of the disc will generate eddy current due to the change of medium direction, which reduces the direct washing of the valve disc by the medium, so that the seat seal also avoids the direct washing of the medium. At the same time, because the sealing surface of the disc is tapered, the dirt and impurities on the sealing surface of the valve seat can be blown away to protect the sealing surface, thereby prolonging the service life of the valve. Sleeve blowdown valve fully open state: when the disc is fully open, the entire valve is in a fully vented state, and the resistance of the fluid in the cold door is small, which shortens the venting time and improves the venting efficiency of the valve.

As shown in Figure 8, in this embodiment, the sand washing pipeline 4 includes a connection port 8 41 and a sand washing outlet 42, the connection port 8 41 is connected to the sand washing port 2-4, and the connection port 8 41 is connected to the sand washing outlet 42. A valve eleven 43 and a second ball valve 44 are provided between the ports 42 .

The sand flushing pipeline 4 is used in the following manner: when the equipment is in normal operation, the valve eleven 43 and the second ball valve 44 are closed. Two ball valves 44 are used to flush the inside of the equipment.

As shown in Figures 9 to 11, embodiment 6 is a desander with multiple connecting pipelines, the desander includes a cylinder 22, and the lower part of the cylinder 22 is provided with an oval head 21 and a support seat 27. The sand discharge port 2-5 is located at the lower part of the oval head 21, and the upper part of the cylinder 22 is equipped with a quick-opening blind plate 26. The three-lobe clamp type quick-opening blind plate has a large occlusal area, high safety and reliability, and easy operation , more suitable for installation and use on high-pressure and large-diameter equipment. Equipped with a safety interlock mechanism to fully ensure safety and reliability. Features: The product is mainly composed of a blind cover, a cylinder, a three-lobed clamp, a safety interlock mechanism, a rotating arm mechanism and an opening and closing mechanism. Use a special wrench to turn one end of the switch screw clockwise or counterclockwise, and the three-lobed clamp can expand or contract, so as to achieve the purpose of quick opening and closing. 2. From the model selection of the quick-opening blind plate, the quick-opening blind plate of the clamp type (KGMB) is adopted, and its structure is similar to the combination of the flange and the flange cover. Add an O-ring to the sealing groove, and rely on the tension to compact the sealing ring, so that sand particles are not easy to penetrate into the sealing groove. At the same time, the inspection and maintenance procedure is more simple and effective, and the frequency of inspection and maintenance by the owner is reduced, while ensuring continuous and effective production.

Working principle: When the formation fluid enters the desander, it first hits the inlet guide device, causing the momentum and direction of the fluid to change suddenly, the gas escapes from the liquid and rises, and the liquid and sand sink to the lower part of the container. The inlet of the desander is connected to the downstream data head or the heating furnace; the gas outlet of the desander is connected to the pipeline three-phase separator; the sewage outlet of the desander is connected to the inlet of the sewage tank; the release outlet of the desander is connected to the discharge port with a pipeline. The sand washing and sand discharge outlets are determined by the actual working conditions on site.

In this embodiment, a screen cylinder 23 is provided inside the cylinder body 22, and the screen cylinder 23 is connected inside the cylinder body 22 through a screen cylinder fixing structure 25. The bottom of the screen cylinder 22 is provided with a seamless elbow 28, and the seamless elbow 28 It is connected with the produced gas outlet 2-3; the inside of the cylinder 22 is provided with a diversion structure 24, and the diversion structure 24 is located below the produced gas outlet 2-3. The diversion structure 24 is an arc-shaped folding baffle, which is The structure of the sudden change of the direction and speed of the medium, the diversion device is mainly used to withstand the impact of the fluid, to achieve high-speed swirling flow to avoid the direct impact of the medium on the inner wall of the desander; the inlet diversion device adopts a diversion device that is easier for the medium to transition smoothly, Its structure is a semicircular diversion plane, which effectively prevents the medium from directly scouring the inner wall and the sand removal cylinder. The cylinder body 22 is also provided with a tuning fork liquid level switch port 2-8, a hand hole 2-7 and a liquid level gauge port 2-9. The tuning fork liquid level switch port 2-8 is a switch for detecting the liquid level inside the desander, the hand hole 2-7 is a channel for entering the interior of the desander during internal inspection and maintenance, and the liquid level gauge port 2-9 is connected to an external liquid level gauge. The inside of the quick opening blind plate 26 is provided with an O-ring matched with the barrel 22 .

The direction of the tuning fork liquid level switch is the same as that of the sand discharge port, and the tuning fork liquid level switch is driven by piezoelectric ceramics, and the body of the tuning fork vibrates at a certain mechanical resonance frequency. When in contact with the liquid to be tested, the resonant frequency of the fork body will drop significantly, and the change of the vibration frequency will be directly reflected on the output signal of the piezoelectric detection device, and then the detection circuit will judge the change of the vibration frequency and output a The switch signal is used to judge the height of the liquid level, so as to select the appropriate time for sewage discharge. The principle of liquid level adjustment: the liquid level should be seen in the liquid level gauge; the liquid level must be the real liquid level, that is, ensure that the liquid level gauge is connected with the container up and down; usually the liquid level is set at 3/4 of the liquid level gauge. On-site commissioning and pressure test, clean water 1.1m³; pressure test plugs for the inlet of the desander and the gas and liquid outlets; test the pressure to 12.25 MPa, stabilize the pressure for 30 minutes, and it is qualified if there is no leakage. If there is a leak, release the pressure Make corrections after that, and then retest the pressure. Into the desander: Gently open the upper diversion hole single ram plate gate valve of the gas-liquid inlet and the valve on the gas pipeline; closely observe the rise of the liquid level through the liquid level gauge; after the liquid level rises, open the electric control valve; The regulating valve sets the liquid level position.

As shown in Figure 12 and Figure 13, in this embodiment, the screen cylinder 23 is a wedge-shaped filter screen wrapped around wire, and the separation and filtration accuracy is 0.1 mm. The screen cylinder prevents solid particles exceeding 0.1mm from entering the inside of the screen cylinder and is discharged from the produced gas outlet. The characteristics of wire wound screen cylinder: wear resistance and corrosion resistance. The mesh section is trapezoidal. The gap is narrow at the top and wide at the bottom. The sieve bar is made of cold-rolled stainless steel wire, and the support bar is welded by automatic sieve. The sieve gap is uniform, the welding quality is stable, the opening rate is high, the service life is long, and it has high strength, rigidity and bearing capacity. Including the screen cylinder body 231, the lower part of the screen cylinder body 231 is provided with a tray 233, the upper part of the screen cylinder body 231 is connected with a fixed plate 235, and the fixed plate 235 is connected with the connecting plate 234 arranged inside the cylinder body 22 through a locking piece 236. The lower part of the screen cylinder body 231 is provided with a sealing rubber ring 232 matched with the tray 233 . The screen cylinder is fixed with a single-head closed and single-head open wire-wound screen cylinder structure, in which the closed end is placed on the top of the desander, the open end is placed on the bottom of the desander, and the open end placed on the bottom is provided with a ring groove seal Surface, so that the sealing surface of the screen drum and the sealing surface of the groove are effectively matched, and the separation effect is greatly improved during the operation of the desander.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. A desander with multiple connecting pipelines, characterized in that it includes a desander (2), the desander (2) is installed on the desander skid (8), the desander (2 ) is provided with a produced gas inlet (2-2), the middle part of the desander (22) is provided with a produced gas outlet (2-3), the produced gas inlet (2-2) and the produced gas outlet (2-3) There is a produced gas inlet and outlet pipeline (3) connected between them; a sand washing port (2-4) is provided at the lower part of the desander (2), and a sand washing pipeline (4) is connected to the sand washing port (2-4); The upper part of the desander (2) is provided with a safety valve port (2-1), and a safety pipeline (1) is connected to the safety valve port (2-1); the lower part of the desander (2) is also provided with a sand discharge port (2-5) and the sewage outlet (2-6), the sand discharge outlet (2-5) is connected with the sand discharge pipeline (6), the sewage discharge outlet (2-6) is provided with the sewage discharge pipeline (7), the sand discharge The pipeline (6) and the sewage pipeline (7) are connected in parallel; the gas inlet and outlet pipeline (3), the sand flushing pipeline (4), the sand discharge pipeline (6) and the sewage pipeline (7) are all arranged on the desander skid (8) , and the ends of the produced gas inlet and outlet pipelines (3), sand flushing pipeline (4), sand discharge pipeline (6) and sewage discharge pipeline (7) are all arranged on the same horizontal line. 2. The desander with multiple connecting pipelines according to claim 1, characterized in that: the produced gas inlet and outlet pipelines (3) include connection port one (31) and connection port two (51), Connecting port one (31) is connected with the produced gas inlet (2-2), and connecting port two (51) is connected with the produced gas outlet (2-3); connecting port one (31) and connecting port two (51) are provided with There are valve one (32), valve two (33) and valve three (52), valve one (32) is set at the inlet of produced gas (2-2), valve three (52) is set at the outlet of produced gas (2-3 ), valve two (33) is set between valve one (32) and valve three (52), and valve one (32), valve two (33) and valve three (52) are connected by pipelines to form a U-shaped safety pipeline structure. 3. The desander with multiple connecting pipelines according to claim 1 or 2, characterized in that: the safety pipeline (1) includes connection port three (11) and safety valve port (2-1) Connection, the pipeline where the connection port three (11) is located is provided with valve four (12), stop valve (13), valve six (14), safety valve (15) and valve five (16), valve four (12), The stop valve (13), valve six (14), safety valve (15) and valve five (16) are sequentially connected through pipelines to form a frame-type safety pipeline structure, and valve four (12) and valve six (14) are symmetrically arranged on On both sides of the frame-shaped safety pipeline structure, the stop valve (13) is arranged at the lower part of the frame-shaped safety pipeline structure, and the valve five (16) and the safety valve (15) are located at the upper part of the frame-shaped safety pipeline structure. 4. The desander with multiple connecting pipelines according to claim 3, characterized in that: the sand discharge pipeline (6) includes connection port four (61), connection port five (62) and sand discharge The sand outlet (63), the connection port four (61) is connected to the sand discharge port (2-5), the connection port five (62) is connected to the sewage pipeline (7), the connection port four (61) is connected to the connection port five (62 ) between valve seven (64), valve eight (65) and the first blowdown valve (66), the sand outlet (63) is set between valve seven (64) and valve eight (66), And the first ball valve (67) is arranged on the pipeline where the sand outlet (63) is located. 5. The desander with multiple connecting pipelines according to claim 4, characterized in that: the sewage pipeline (7) includes connection port six (71) and connection port seven (72), connection port six (71) is connected with the sand washing port (2-4), the connection port seven (72) is connected with the connection port five (62), and there are two parallel settings between the connection port six (71) and the connection port seven (72). The upper pipeline is equipped with valve nine (73), electric ball valve (74), electric regulating valve (75) and second blowdown valve (76), and the lower pipeline is equipped with valve ten (77) and third Blowdown valve (78). 6. The desander with multiple connecting pipelines according to claim 5, characterized in that: the sand washing pipeline (4) includes a connecting port eight (41) and a sand washing outlet (42), Connection port eight (41) is connected to the sand washing port (2-4), and valve eleven (43) and a second ball valve (44) are arranged between connection port eight (41) and the sand washing outlet (42). 7. The desander with multiple connecting pipelines according to any one of claims 1, 2, 4~6, characterized in that: the desander includes a cylinder (22), the cylinder (22 ) is provided with an elliptical head (21) and a support seat (27), the sand outlet (2-5) is located at the lower part of the elliptical head (21), and the upper part of the cylinder (22) is provided with a quick-opening blind plate (26); the cylinder body (22) is provided with a screen drum () (23), the screen drum (23) is connected to the inside of the cylinder body (22) through the screen drum fixing structure (25), and the lower part of the screen drum (22) A seamless elbow (28) is provided, and the seamless elbow (28) is connected with the produced gas outlet (2-3); a diversion structure (24) is provided inside the cylinder body (22), and the diversion structure (24) is located at Below the produced gas outlet (2-3); the cylinder body (22) is also provided with a tuning fork liquid level switch port (2-8), a hand hole (2-7) and a liquid level gauge port (2-9). 8. The desander with multiple connecting pipelines according to claim 7, characterized in that: the quick opening blind plate (26) is provided with an O-ring matched with the cylinder (22) inside. 9. The desander with multiple connecting pipelines according to claim 8, characterized in that: the screen cylinder (23) includes a screen cylinder body (231), and the lower part of the screen cylinder body (231) is provided with The tray (233), the upper part of the screen cylinder body (231) is connected with a fixed plate (235), and the fixed plate (235) is connected with the connecting plate (234) arranged inside the cylinder body (22) through a locking piece (236). 10. The desander with multiple connecting pipelines according to claim 9, characterized in that: the lower part of the screen cylinder body (231) is provided with a sealing rubber ring (232) that cooperates with the tray (233) .

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