CN120175491B - Gas turbine air inlet system with adjustable flow velocity - Google Patents
Gas turbine air inlet system with adjustable flow velocityInfo
- Publication number
- CN120175491B CN120175491B CN202510628365.7A CN202510628365A CN120175491B CN 120175491 B CN120175491 B CN 120175491B CN 202510628365 A CN202510628365 A CN 202510628365A CN 120175491 B CN120175491 B CN 120175491B
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- CN
- China
- Prior art keywords
- air inlet
- adjusting
- heat exchange
- gas turbine
- air intake
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
- F02C7/057—Control or regulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
- F02C7/042—Air intakes for gas-turbine plants or jet-propulsion plants having variable geometry
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of gas turbines, and particularly relates to a gas turbine air inlet system with adjustable flow rate, which comprises an air inlet main body, wherein the air inlet main body comprises a heat exchange shell and an air inlet inner barrel which is coaxially arranged, an annular cavity is formed between the heat exchange shell and the air inlet inner barrel, a waste heat utilization mechanism is arranged in the annular cavity, a guide vane is fixedly arranged on the inner wall of the air inlet inner barrel, the section of the guide vane is streamline, an air inlet cover is arranged at one end of the air inlet main body, an air inlet main shaft is rotatably arranged at the inner side of the air inlet cover through a mounting seat, the problem to be solved in the scheme is that when the gas turbine is adapted to different loads or working conditions, the inner side of the gas turbine is easy to induce periodic pressure fluctuation due to dynamic instability of air flow, so that surge phenomenon is caused, and the scheme can control the flow rate and the pressure of air entering a combustion chamber through adjusting the distance between fan blades through a dynamic adjusting mechanism designed in order to avoid the surge.
Description
Technical Field
The invention belongs to the technical field of gas turbines, and particularly relates to a gas turbine air inlet system with an adjustable flow rate.
Background
The gas turbine air intake system is one of the gas turbine core subsystems, and has the core functions of efficiently sucking and preprocessing air, ensuring stable delivery to the combustion chamber to participate in the fuel mixing and combustion process, so as to maintain the efficient operation of the gas turbine based on the brayton cycle.
The traditional air inlet system generally adopts a fixed air inlet blade design, and has a simple structure, but faces a remarkable technical bottleneck in actual operation:
When the gas turbine is adapted to different loads or working conditions, the inside of the gas compressor is easy to induce periodic pressure fluctuation due to dynamic instability of air flow, so that the surge phenomenon is further induced. The surge not only causes the sudden drop of the efficiency of the gas compressor and the rapid increase of the mechanical stress of the parts, but also causes the shutdown of equipment when serious, thereby greatly limiting the working range and the reliability of the gas turbine;
In addition, conventional air induction systems lack efficient recovery of combustion waste heat, resulting in significant thermal efficiency losses. Meanwhile, the fixed blade design is difficult to dynamically match the differential requirements of the combustion chamber on the air flow speed, the air flow and the air pressure, and particularly the problems of uneven air flow distribution, aggravated eddy current loss and the like are easily generated under the transient working condition, so that the combustion efficiency and the turbine output performance are further restricted;
Therefore, there is a need to develop a gas turbine air intake system with adjustable flow rate, which realizes accurate adjustment and control of blade spacing through innovative structural design, so as to dynamically optimize air intake parameters, inhibit surge risk, integrate a waste heat recovery mechanism and promote comprehensive energy efficiency of the system.
Disclosure of Invention
The present invention is directed to a gas turbine air intake system with adjustable flow rate to solve the above-mentioned problems.
In order to achieve the above purpose, the invention provides a gas turbine air inlet system with adjustable flow rate, comprising:
The air inlet main body comprises a heat exchange shell and an air inlet inner cylinder which are coaxially arranged, an annular cavity is formed between the heat exchange shell and the air inlet inner cylinder, and a waste heat utilization mechanism is arranged in the annular cavity;
The inner wall of the air inlet inner cylinder is fixedly provided with a guide vane, and the section of the guide vane is streamline;
One end of the air inlet main body is provided with an air inlet cover, the inner side of the air inlet cover is rotatably provided with an air inlet main shaft through a mounting seat, and the periphery of the air inlet main shaft is provided with an air inlet blade capable of axially moving through a dynamic adjusting mechanism;
The dynamic adjustment mechanism includes:
the adjusting screw is rotatably arranged in the air inlet main shaft, and one end of the adjusting screw is fixedly provided with a transmission worm wheel;
the adjusting nut is slidably arranged on the air inlet main shaft through an adjusting chute, is fixed on the inner side of the air inlet blade and is in threaded connection with the adjusting screw;
the transmission worm is meshed with the transmission worm wheel, and one end of the transmission worm extends to the outside of the air inlet main shaft and is fixedly provided with a transmission helical gear;
The adjusting pressing cylinder is fixed on the inner wall of the mounting seat and comprises an adjusting sliding seat driven by an adjusting cylinder, one end of the adjusting sliding seat is fixedly provided with an adjusting toothed plate through an installing clamping groove, and the adjusting toothed plate is meshed with the transmission bevel gear to drive the transmission worm to rotate;
The waste heat utilization mechanism comprises a heat exchange seat, a heat exchange ring, a heat exchange pipeline and a heat exchange pump, wherein the heat exchange ring is arranged around the inner wall of the combustion seat and is communicated with the heat exchange pipeline through the heat exchange pump, so that combustion waste heat is recovered and inlet air flow is preheated.
Preferably, the dynamic adjusting mechanisms are symmetrically distributed on two sides of the air inlet main shaft, and the adjusting pressure cylinders and the transmission bevel gears are arranged in a spiral array so as to synchronously adjust the axial intervals of the multiple groups of air inlet blades.
Preferably, the outside of the adjusting screw is fixed with a driving sprocket, and the adjusting screws at symmetrical positions are linked with the driving sprocket through a driving toothed chain, so that stable movement of the air inlet blade is ensured.
Preferably, the surface of the main sheet of the guide sheet is provided with guide protrusions, a graphene composite heat conducting net and a supporting block are embedded in the heat conducting copper shell of the main sheet, a phase change heat conducting medium is filled in gaps of the graphene composite heat conducting net, and the main sheet is connected with a heat exchange seat of the waste heat utilization mechanism through the heat conducting copper shell.
Preferably, the adjusting slide seat of the adjusting pressure cylinder is in sliding connection with the fixing seat through a limiting slide plate, and the adjusting toothed plate is meshed with the transmission bevel gear through bevel teeth so as to provide a bidirectional adjusting function.
Preferably, the air inlet cover and the mounting seat are fixed through the rice-shaped bracket, and the air inlet main shaft is rotatably mounted in the mounting seat through the double-row angular contact ball bearing.
Preferably, the heat exchange shell is provided with a combustion seat at one end far away from the air inlet cover, the combustion seat is internally provided with a burner which is distributed in an annular mode, and the heat exchange ring is integrated on the inner wall of the combustion seat.
Preferably, the guide protrusions have a wave-shaped structure, and the height of the guide protrusions is gradually changed along the air flow direction, so that the air flow distribution is optimized and the eddy current loss is reduced.
Preferably, the adjusting stroke of the dynamic adjusting mechanism is controlled by the displacement of a piston rod of an adjusting cylinder, and the adjusting cylinder is a servo hydraulic cylinder or an electric linear actuator.
Preferably, the system further comprises a controller which drives the adjusting cylinder based on the working condition signal of the compressor so as to adjust the distance between the air inlet blades in real time, inhibit surge and optimize combustion efficiency.
Compared with the prior art, the invention has the beneficial effects that:
1. Through the dynamic adjusting mechanism of design, the lower end of the adjusting pressure cylinder is downwards clamped on the transmission helical gear to drive the transmission worm to rotate when the air inlet main shaft rotates, and the transmission worm gear are matched to drive the adjusting screw to rotate, so that the adjusting screw drives the adjusting nut and the moving position of the air inlet blade to be finely adjusted, the distance between the air inlet blades is adjusted, the air flow rate and the pressure entering the combustion chamber can be controlled through adjusting the distance between the blades, so that the surge is avoided, the whole performance of the gas turbine can be optimized through proper distance adjustment, the air flow rate and the pressure entering the combustion chamber can be changed, and the combustion efficiency and the acting capacity of the turbine are affected.
2. Through waste heat utilization mechanism and the guide vane of design, carry out certain recovery through the heat transfer ring to the heat that the combustor burns and produce when using, then through heat exchange pipeline and heat exchange seat direction guide vane, preheat the air current of process through the guide vane to guarantee that the air current gets into more abundant when burning through the combustor in the burning seat, and reduce consumption and heat loss.
3. Through the guide vane of design, lead the air current through guide vane and the cooperation of inlet vane when using, evenly distributed when guaranteeing the air current and flow, avoid local air current to be strong or weak excessively to improve combustion efficiency, the vortex loss of air current can be reduced to the fine setting of cooperation inlet vane position simultaneously, reduces energy consumption.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic diagram of a pre-heat absorbent structure according to the present invention;
FIG. 4 is a schematic view of a heat conducting structure according to the present invention;
FIG. 5 is a schematic cross-sectional view of an adjustment structure of the present invention;
FIG. 6 is a schematic view of the structure of the adjusting cylinder according to the present invention;
FIG. 7 is a schematic view of a baffle mounting structure of the present invention;
FIG. 8 is a schematic view of a baffle structure according to the present invention;
In the figure, 1, an air inlet main body; 11, a heat exchange shell, 12, an air inlet cover, 13, a mounting seat, 14, a combustion seat, 15, a burner, 16, an air inlet main shaft, 17, an air inlet blade, 18, an air inlet inner cylinder, 2, a waste heat utilization mechanism, 21, a heat exchange seat, 22, a heat exchange pipeline, 23, a heat exchange pump, 24, a heat exchange ring, 31, an adjusting screw rod, 32, an adjusting nut, 33, an adjusting chute, 34, a transmission helical gear, 35, a transmission worm, 36, a transmission worm gear, 37, a transmission sprocket, 38, a transmission toothed chain, 3, a dynamic adjusting mechanism, 4, an adjusting pressure cylinder, 41, a fixed seat, 42, an adjusting cylinder, 43, an adjusting slide seat, 44, an adjusting toothed plate, 45, an installation clamping groove, 46, a limiting slide plate, 5, a guide vane, 51, a main plate, 52, a guide boss, 53, a graphene composite heat conducting net, 54, a supporting block and 55, a heat conducting copper shell.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 8, the invention provides a technical scheme that a gas turbine air intake system with adjustable flow rate comprises an air intake main body 1 and a controller, wherein the controller drives an adjusting cylinder based on a working condition signal of a gas compressor to adjust an air intake blade interval in real time so as to inhibit surge and optimize combustion efficiency, the air intake main body 1 comprises a heat exchange shell 11 and an air intake inner cylinder 18, a waste heat utilization mechanism 2 is arranged between the heat exchange shell 11 and the air intake inner cylinder 18, one end of the heat exchange shell 11 is provided with a combustion seat 14, the inner side of the combustion seat 14 is provided with a combustor 15, air intake is conveniently combusted through the combustor 15 in use, the inner wall of the air intake inner cylinder 18 is provided with a guide vane 5, one end of the heat exchange shell 11 and one end of the air intake inner cylinder 18 is provided with an air intake cover 12, the inner side of the air intake cover 12 is provided with an installation seat 13, the inner side of the installation seat 13 is rotatably provided with an air intake main shaft 16, the cover 12 and the installation seat 13 are mutually fixed through a meter-shaped frame, the air intake main shaft 16 is rotatably installed in the installation seat 13, the installation is stable at the same time, the outer side of the air main shaft 16 is not influenced, and the air main shaft is rotatably provided with a main shaft 3, and blades 17 are installed through the dynamic adjustment mechanism, and the main shaft 16 drives the air intake main shaft 16 to rotate to drive the air intake blades 17 to compress air intake air when in rotation;
The dynamic adjusting mechanism 3 comprises an adjusting screw 31 rotatably installed in the air inlet main shaft 16 and an adjusting chute 33 formed on the surface of the air inlet main shaft 16, the adjusting stroke of the dynamic adjusting mechanism 3 is controlled by the displacement of a piston rod of an adjusting cylinder, the adjusting cylinder is a servo hydraulic cylinder, an adjusting nut 32 is fixedly installed on the inner side of an air inlet blade 17 through a bolt, the adjusting nut 32 is installed on the adjusting screw 31 through a threaded hole, a transmission worm wheel 36 is fixedly installed on one end of the adjusting screw 31, one side of the transmission worm wheel 36 is meshed with a transmission worm 35, the transmission worm wheel 36 and the self-locking function of the transmission worm 35 ensure that the air inlet blade 17 stably rotates when not adjusted, the transmission worm 35 is rotatably installed in the air inlet main shaft 16, one end of the transmission worm 35 penetrates through the air inlet main shaft 16 and is fixedly provided with a transmission bevel gear 34, the transmission bevel gear 34 drives the transmission worm 35 to rotate, the transmission worm wheel 36 and the adjusting screw 31 are fixedly installed on the inner wall of the mounting seat 13, the positions of the adjusting pressure cylinders 4 correspond to the positions of the transmission worm 34, and the two sides of the transmission worm wheel 34 are respectively provided with an adjusting pressure cylinder 4, and the two bevel gears 4 are meshed with the transmission worm wheels 34 to drive different directions of the air inlet blade 17 to move in a fine adjustment mode when the adjustment is performed; the dynamic adjusting mechanism 3 is symmetrically arranged on the air inlet main shaft 16, the air inlet blades 17 are connected on the air inlet main shaft 16 through two groups of dynamic adjusting mechanisms 3, the air inlet blades 17 are convenient and stable to adjust when in use, the adjusting pressure cylinder 4 and the transmission bevel gear 34 are respectively arranged on the inner wall of the mounting seat 13 and the surface of the air inlet main shaft 16 in a spiral way, the plurality of air inlet blades 17 are convenient to adjust when in use, the outer side of the adjusting screw 31 is fixedly provided with a driving chain wheel 37, the outer side of the driving chain wheel 37 is sleeved with a driving toothed chain 38, the position of the inside of the air inlet main shaft 16 corresponding to the driving toothed chain 38 is provided with a communication hole, the driving toothed chain 38 is slidably arranged in the communication hole, and the two adjusting screw 31 are ensured to synchronously rotate through the driving of the driving toothed chain 38 and the driving chain wheel 37, so that the air inlet blade 17 is conveniently and stably driven to move to the adjusting position;
The adjusting pressing cylinder 4 comprises a fixed seat 41 fixed on the inner wall of the mounting seat 13 and an adjusting sliding seat 43 slidably mounted at one end of the fixed seat 41, an adjusting cylinder 42 is fixedly mounted at the inner end of the fixed seat 41, a piston rod at one end of the adjusting cylinder 42 is fixedly mounted at one end of the adjusting sliding seat 43, the adjusting sliding seat 43 is more stable in adjusting movement during mounting and use, an adjusting toothed plate 44 is fixedly mounted at one end of the adjusting sliding seat 43 and is meshed with the transmission bevel gear 34 through teeth, the adjusting sliding seat 43 is driven to descend through the adjusting cylinder 42, the adjusting toothed plate 44 on the adjusting sliding seat 43 is meshed with the transmission bevel gear 34, the rotating adjusting toothed plate 44 of the air inlet main shaft 16 drives the transmission bevel gear 34 to rotate, a mounting clamping groove 45 is formed in the lower end of the adjusting sliding seat 43, the adjusting toothed plate 44 is fixed on the adjusting sliding seat 43 through a bolt and the mounting clamping groove 45, the mounting and use of the adjusting toothed plate 44 are more stable through the clamping positioning of the mounting clamping groove 45, the two ends of the adjusting sliding seat 43 are provided with limiting sliding plates 46, the limiting sliding plates 46 are slidably mounted on the outer side of the fixed seat 41, the adjusting sliding seat 43 is enabled to be more stable during sliding, the adjusting toothed plate 44 is enabled to slide through the limiting sliding plates 46 to be meshed with the bevel gear 34, and the lower end of the adjusting toothed plate 44 is meshed with the bevel gear 34 conveniently, and the bevel gear is meshed with the bevel gear and meshed with the bevel gear 34.
As can be seen from the above description, the invention has the advantages that when the air inlet main shaft 16 rotates, the lower end of the adjusting pressure cylinder 4 is downwards clamped on the transmission helical gear 34 to drive the transmission worm 35 to rotate, and the transmission worm 35 and the transmission worm wheel 36 are matched to drive the adjusting screw 31 to rotate, so that the adjusting screw 31 drives the adjusting nut 32 and the moving position of the air inlet blade 17 to be finely adjusted, the distance between the air inlet blades 17 is adjusted, the air flow rate and the air pressure entering the combustion chamber can be controlled by adjusting the blade wheel distance, so that the surge is avoided, and the whole performance of the gas turbine can be optimized by adjusting the proper distance, the air flow rate and the air pressure entering the combustion chamber can be changed, and the combustion efficiency and the acting capability of the turbine are affected.
Referring to fig. 1 to 8, on the basis of the first embodiment, the invention provides a technical scheme that the waste heat utilization mechanism 2 comprises a heat exchange seat 21 fixed on the outer surface of an air inlet inner cylinder 18 and a heat exchange ring 24 arranged in a combustion seat 14, wherein the heat exchange ring 24 is arranged on the inner wall of the combustion seat 14, the waste heat is absorbed while the combustion of a combustor 15 is not influenced, a heat exchange pipeline 22 is arranged on the inner side of the heat exchange seat 21, the end part of the heat exchange pipeline 22 is communicated with the heat exchange ring 24 through a heat exchange pump 23, a medium flows to the heat exchange pipeline 22 through the operation of the heat exchange pump 23, and heat is conducted to a flow guiding sheet 5 through the heat exchange pipeline 22 and the heat exchange seat 21.
By adopting the technical scheme, the waste heat utilization mechanism 2 and the guide vane 5 can recover the heat generated by the combustion of the burner 15 to a certain extent through the heat exchange ring 24 when in use, then the heat exchange pipeline 22 and the heat exchange seat 21 guide the guide vane 5, and the guide vane 5 can preheat the passing air flow, so that the air flow is ensured to enter the combustion seat 14 to be more sufficient when being combusted through the burner 15, and the consumption and the heat loss are reduced.
Further, referring to fig. 1 to 8, the deflector 5 includes a main sheet 51 and a deflector protrusion 52 mounted on the surface of the main sheet 51, the deflector protrusion 52 is of a wave-shaped structure, the height of the deflector protrusion is gradually changed along the airflow direction to optimize the airflow distribution and reduce the vortex loss, the air can be better deflected by the deflector protrusion 52, the main sheet 51 has the same angle with the adjacent air inlet blade 17, the main sheet 51 is fixed on the inner wall of the air inlet inner cylinder 18, the main sheet 51 is ensured to be more stable when being mounted and used in use, the upper end of the main sheet 51 passes through the air inlet inner cylinder 18 and is connected with the heat exchange seat 21, the main sheet 51 includes a heat conducting copper shell 55 and a supporting block 54 mounted in the heat conducting copper shell 55, the heat exchange seat 21 and the heat conducting copper shell 55 are ensured to be more stable when being used by the reinforced support of the supporting block 54, the graphene composite heat conducting net 53 is mounted in the heat exchange seat 21 and the heat conducting copper shell 55, the gaps of the graphene composite heat conducting net 53 are filled with heat conducting medium, and the main sheet 51 heats the passing through the heat absorbing medium.
By adopting the guide vane 5 in the technical scheme, when the guide vane 5 is used, air flow is guided through the matching of the guide vane 5 and the air inlet vane 17, so that even distribution is ensured when the air flow flows, local air flow is prevented from being too strong or too weak, the combustion efficiency is improved, meanwhile, the vortex loss of the air flow can be reduced by matching with the fine adjustment of the position of the air inlet vane 17, and the energy consumption is reduced
The invention has the working principle and the use flow that when in use, ventilation is carried out to the inside of the air inlet inner cylinder 18 through the space between the air inlet cover 12 and the mounting seat 13, the air inlet main shaft 16 drives the air inlet blade 17 to rotate to compress air when in use, the adjusting sliding seat 43 is driven to descend through the adjusting cylinder 42 according to the load connected with the air inlet main shaft 16, the adjusting toothed plate 44 on the adjusting sliding seat 43 is meshed with the transmission bevel gear 34, the transmission bevel gear 34 is driven to rotate through the rotating adjusting toothed plate 44 of the air inlet main shaft 16, the transmission bevel gear 34 drives the transmission worm 35 to rotate, the transmission worm 35 drives the transmission worm wheel 36 and the adjusting screw 31 to rotate, the adjusting screw 31 drives the adjusting nut 32 to slide in the adjusting chute 33 through threads, thereby driving the air inlet blade 17 to slide on the outside of the air inlet main shaft 16 for fine adjustment, the adjusting toothed plate 44 on the other side of the air inlet blade 17 is meshed with the other side of the transmission bevel gear 34 when in reverse adjustment, and the air is guided through the main blade 51 and the guide boss 52 when in ventilation, the adjacent air inlet blade 17 is more stable when in air compression, meanwhile, the heat exchange ring 24 and the internal medium absorb the heat pump 15 is combusted, the heat exchange medium flows through the heat exchange tube 23, the heat exchange tube 22 and the heat conducting medium are better through the heat exchange tube 22 and the heat exchange tube 55, the heat exchanger and the heat medium can be filled up and the heat medium, and the heat medium and the air medium can pass through the heat exchange medium and the heat exchange medium and the heat medium and has can be more stable operation.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is merely illustrative of the present invention and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (10)
1. A gas turbine air intake system with adjustable flow rate, comprising:
The air inlet main body (1), the air inlet main body (1) comprises a heat exchange shell (11) and an air inlet inner cylinder (18) which are coaxially arranged, an annular cavity is formed between the heat exchange shell (11) and the air inlet inner cylinder (18), and a waste heat utilization mechanism (2) is arranged in the annular cavity;
The inner wall of the air inlet inner cylinder (18) is fixedly provided with a guide vane (5), and the section of the guide vane (5) is streamline;
One end of the air inlet main body (1) is provided with an air inlet cover (12), the inner side of the air inlet cover (12) is rotatably provided with an air inlet main shaft (16) through a mounting seat (13), and the periphery of the air inlet main shaft (16) is provided with an air inlet blade (17) capable of axially moving through a dynamic adjusting mechanism (3);
The dynamic adjustment mechanism (3) includes:
an adjusting screw (31) rotatably installed inside the air inlet main shaft (16), one end of which is fixed with a transmission worm wheel (36);
the adjusting nut (32) is slidably arranged on the air inlet main shaft (16) through an adjusting chute (33), is fixed on the inner side of the air inlet blade (17), and is in threaded connection with the adjusting screw (31);
A transmission worm (35) meshed with the transmission worm wheel (36), and one end of which extends to the outside of the air inlet main shaft (16) and is fixed with a transmission bevel gear (34);
The adjusting pressing cylinder (4) is fixed on the inner wall of the mounting seat (13) and comprises an adjusting sliding seat (43) driven by an adjusting cylinder (42), one end of the adjusting sliding seat (43) is fixedly provided with an adjusting toothed plate (44) through an installing clamping groove (45), and the adjusting toothed plate (44) is meshed with the transmission bevel gear (34) to drive the transmission worm (35) to rotate;
The waste heat utilization mechanism (2) comprises a heat exchange seat (21), a heat exchange ring (24), a heat exchange pipeline (22) and a heat exchange pump (23), wherein the heat exchange ring (24) is arranged around the inner wall of the combustion seat (14) and is communicated with the heat exchange pipeline (22) through the heat exchange pump (23) so as to recover combustion waste heat and preheat inlet air flow.
2. The gas turbine air intake system of claim 1, wherein the dynamic adjusting mechanisms (3) are symmetrically distributed on two sides of the air intake main shaft (16), and the adjusting pressure cylinders (4) and the transmission bevel gears (34) are arranged in a spiral array so as to synchronously adjust the axial spacing of the plurality of groups of air intake blades (17).
3. The gas turbine air intake system according to claim 1, characterized in that a drive sprocket (37) is fixed on the outside of the adjusting screw (31), and the symmetrically positioned adjusting screws (31) are linked with the drive sprocket (37) through a drive toothed chain (38) to ensure stable movement of the air intake vane (17).
4. The gas turbine air intake system according to claim 1, characterized in that the surface of a main sheet (51) of the guide sheet (5) is provided with guide protrusions (52), a graphene composite heat conducting net (53) and supporting blocks (54) are embedded in a heat conducting copper shell (55) of the main sheet (51), gaps of the graphene composite heat conducting net (53) are filled with phase change heat conducting media, and the main sheet (51) is connected with a heat exchange seat (21) of the waste heat utilization mechanism (2) through the heat conducting copper shell (55).
5. Gas turbine inlet system according to claim 1, characterized in that the adjusting slide (43) of the adjusting cylinder (4) is slidingly connected with the fixed seat (41) by means of a limit slide (46), and the adjusting toothed plate (44) engages the driving bevel gear (34) by means of bevel teeth to provide a bi-directional adjusting function.
6. The gas turbine air intake system of claim 1, wherein the air intake cover (12) and the mounting seat (13) are fixed by a bracket in a shape like a Chinese character 'mi', and the air intake main shaft (16) is rotatably mounted in the mounting seat (13) by a double row angular contact ball bearing.
7. The gas turbine air intake system of claim 1, wherein the heat exchange housing (11) is provided with a combustion seat (14) at an end remote from the air intake shroud (12), wherein the combustion seat (14) is internally provided with annularly distributed combustors (15), and wherein the heat exchange ring (24) is integrated on the inner wall of the combustion seat (14).
8. The gas turbine air intake system of claim 4, wherein the deflector ledge (52) has a wave-like configuration with a height that tapers in the direction of the air flow to optimize the air flow distribution and reduce eddy current losses.
9. Gas turbine air intake system according to claim 1, characterized in that the adjustment stroke of the dynamic adjustment mechanism (3) is controlled by the piston rod displacement of the adjustment cylinder (42), and that the adjustment cylinder (42) is a servo hydraulic cylinder or an electric linear actuator.
10. The gas turbine air intake system of any of claims 1-9, further comprising a controller that drives the adjustment cylinder (42) based on the compressor operating condition signal to adjust the air intake vane (17) spacing in real time, inhibit surge and optimize combustion efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510628365.7A CN120175491B (en) | 2025-05-15 | 2025-05-15 | Gas turbine air inlet system with adjustable flow velocity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510628365.7A CN120175491B (en) | 2025-05-15 | 2025-05-15 | Gas turbine air inlet system with adjustable flow velocity |
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| Publication Number | Publication Date |
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| CN120175491A CN120175491A (en) | 2025-06-20 |
| CN120175491B true CN120175491B (en) | 2025-09-12 |
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| CN202510628365.7A Active CN120175491B (en) | 2025-05-15 | 2025-05-15 | Gas turbine air inlet system with adjustable flow velocity |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381670A (en) * | 2001-04-12 | 2002-11-27 | 西门子公司 | Combustion turbine with axial relative movel guide unit |
| CN106996317A (en) * | 2015-10-23 | 2017-08-01 | 通用电气公司 | The active clearance control of double-walled heat shielding with one |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140230400A1 (en) * | 2013-02-15 | 2014-08-21 | Kevin M. Light | Heat retention and distribution system for gas turbine engines |
| US11015524B2 (en) * | 2017-08-30 | 2021-05-25 | Parker-Hannifin Corporation | Turbine engine air control valve |
| DE102022119333B4 (en) * | 2022-08-02 | 2025-07-24 | Technische Universität Darmstadt, Körperschaft des öffentlichen Rechts | Turbomachine with an adjustable axial impeller arrangement |
| US12037943B2 (en) * | 2022-10-07 | 2024-07-16 | General Electric Company | Waste heat recovery system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381670A (en) * | 2001-04-12 | 2002-11-27 | 西门子公司 | Combustion turbine with axial relative movel guide unit |
| CN106996317A (en) * | 2015-10-23 | 2017-08-01 | 通用电气公司 | The active clearance control of double-walled heat shielding with one |
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| CN120175491A (en) | 2025-06-20 |
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