Compressor inlet elbow anti-distortion optimization device and method

Abstract

The present invention provides a device and method for optimizing the anti-distortion of an inlet bend of a compressor, which relates to the technical field of turbochargers, including a compressor body, wherein the connecting flange pipe is fixedly connected to the inlet bend with a bolt at one end away from the compressor body; the inlet bend is provided with a drainage port and an isobaric equalizing port that penetrate inside and outside; the drainage port and the isobaric equalizing port are located on the outside of the inlet bend and are connected through a connected drainage pipe, and a flow rate regulating motor is also installed on the drainage pipe; an airflow directing plate is also installed on the front end of the inlet air flow direction of the inlet bend in a fixed-axis rotating manner. The present invention analyzes the flow characteristics of the gas in the bend and specifically sets up a set of gas distortion optimization devices that can be adjusted according to the pressure and airflow state. The device can redistribute the distribution state of the airflow after flowing through the bend, thereby better balancing the pressure and pressure distribution state of the gas after flowing out of the bend, thereby achieving the purpose of optimizing the working efficiency and stability of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of turbochargers, and in particular to a device and method for optimizing the anti-distortion of a compressor inlet elbow. Background Art

[0002] Optimizing compressor inlet elbow distortion prevention is an important research topic in aeroengine design. The design of the compressor inlet elbow is crucial to the overall engine performance and stability. Because airflow distortion at the compressor inlet directly impacts compressor efficiency and stability, optimizing the elbow design to minimize distortion is crucial.

[0003] Current research indicates that methods for suppressing swirl distortion primarily include inlet guide vanes, compressor blade configuration adjustments, and flow control technologies. While these methods can mitigate the effects of distortion on the compressor to a certain extent, they still present challenges, such as increased noise, increased engine mass and length, and icing on the guide vanes. Furthermore, airflow distortion is a key issue for L-shaped inlet technology. As air flows through the inlet, it is subject to complex forces, which can easily lead to uneven variations in velocity, pressure, and direction, resulting in airflow distortion.

[0004] Current research challenges primarily include: 1. How to accurately predict and control the flow characteristics of airflow within the elbow to reduce distortion; 2. How to achieve lightweight and miniaturized elbow design while ensuring engine performance; and 3. How to maintain the stability and reliability of the elbow design under various flight conditions. To address these technical challenges, a series of effective strategies must be sought in the laboratory, including optimizing the design of the intake duct, improving the flow characteristics within the intake elbow, and analyzing and predicting the flow state under different pressures to find the optimal design solution and minimize or even eliminate airflow distortion.

[0005] To this end, the prior art discloses a centrifugal compressor intake distortion adjustment device with a publication number of "CN106989062A", which improves the intake distortion phenomenon by setting a guide plate on the inner wall of the intake duct. However, this adjustment method has limited effect on improving the distorted airflow. In addition, the prior art discloses a curved pipeline structure for suppressing flow distortion with a publication number of "CN111120161A", which designs multiple sets of guide ribs in the curved pipe. Although this device can play a good airflow guiding role, its multiple sets of ribs generate a large airflow resistance, and its adjustment process is passive and cannot be actively adjusted according to the pressure of the gas.

[0006] In summary, the present invention hopes to design a compressor inlet elbow anti-distortion optimization device and method based on the control of the flow characteristics of the airflow in the elbow, which has a better airflow distortion adjustment effect and can be autonomously adjusted according to the pressure. Summary of the Invention

[0007] The object of the present invention is to provide a device and method for optimizing the anti-distortion of a compressor inlet elbow, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A compressor inlet elbow anti-distortion optimization device comprises a compressor body, the compressor body being fixedly mounted on an assembly frame, a connecting flange pipe being fixedly mounted at an air inlet of the compressor body by bolts, and the connecting flange pipe being fixedly connected to the inlet elbow by bolts at one end away from the compressor body;

[0010] The inlet elbow is provided with a drainage port and an equal pressure distribution port that penetrate inside and outside;

[0011] The drainage port is opened at the outer elbow of the inlet elbow and faces the tangent direction of the inlet air flow direction of the inlet elbow;

[0012] The isobaric distribution port is opened at the inner elbow of the inlet elbow, and an airflow distribution cover is fixedly installed on the inner side of the inlet elbow, and the air outlet of the airflow distribution cover is facing the air inlet of the compressor body;

[0013] The drainage port and the equal pressure distribution port are located outside the inlet elbow and are connected through a connected drainage pipe, and a flow rate regulating motor is also installed on the drainage pipe;

[0014] An airflow steering plate is also installed at the front end of the airflow direction of the inlet bend pipe in a fixed-axis rotatable manner. The airflow steering plate rotates at a preset angle under the control of a driving mechanism installed on the outside of the inlet bend pipe, and the flow direction of the airflow is adjusted by changing the direction of the airflow steering plate.

[0015] Preferably, the driving mechanism that drives the airflow deflecting plate to rotate at a preset angle is a micro reduction motor, and a driving worm is fixedly connected to the output shaft of the micro reduction motor. The rotating shaft at one end of the airflow deflecting plate extends outward through a through hole opened on the inlet elbow and is coaxially fixedly connected to the driving worm gear. The driving worm gear is engaged with the driving worm gear, thereby changing the rotation angle of the airflow deflecting plate by rotating the micro reduction motor.

[0016] Preferably, a drainage fin is fixedly welded on the inner side of the inlet elbow near the drainage port, and the drainage fin faces the air inlet of the inlet elbow.

[0017] Preferably, a protective cover is fixedly installed on the outside of the inlet elbow, and the driving worm wheel and the driving worm are arranged in the protective cover.

[0018] Preferably, an assembly groove is further provided at one end of the air outlet of the inlet elbow, in which a pressure detection device is fixedly installed. The pressure detection device consists of an assembly ring and a plurality of MEMS pressure sensor fins. The MEMS pressure sensor fins are installed in a ring array on the inner side of the assembly ring, and the pressure distribution state at each position of the air outlet end of the inlet elbow is detected by using a plurality of MEMS pressure sensor fins.

[0019] Preferably, the MEMS pressure sensor fin is a fin structure composed of MEMS chips.

[0020] Preferably, the flow rate regulating motor and the micro reduction motor are both electrically connected to a PLC controller, and the PLC controller autonomously adjusts the rotational speed of the flow rate regulating motor and the steering angle of the micro reduction motor.

[0021] A method for optimizing the anti-distortion of a compressor inlet elbow is provided, which uses the above-mentioned device for optimizing the anti-distortion of a compressor inlet elbow and comprises the following steps:

[0022] Step 1: Open the compressor body, and draw gas through the inlet elbow by rotating the turbofan inside the compressor body, and use the pressure detection device to detect the pressure distribution state at each position of the outlet end of the inlet elbow;

[0023] Step 2: Turn on the flow rate regulating motor to introduce the gas flowing through the drainage port into the air flow distribution hood through the drainage pipe, thereby improving the distortion of the air flow after passing through the inlet elbow. The pressure distribution state at each position of the outlet end of the inlet elbow is detected again by the pressure detection device while changing the speed of the flow rate regulating motor until the pressure deviation of each part of the pressure detection device is adjusted to be within the set range, thereby completing the improvement operation of the air flow distortion. If it cannot be adjusted to the preset range, proceed to step 3.

[0024] Step 3: Make the flow rate regulating motor at different constant speeds, and control the airflow steering plate to rotate at a preset angle at each constant speed to adjust the flow direction of the gas when it reaches the bend of the inlet pipeline, until the pressure deviation of each part of the pressure detection device is adjusted to be within the set range, thereby completing the improvement operation of the airflow distortion.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention analyzes the flow characteristics of gas in the elbow and specifically sets up a gas distortion optimization device that can be autonomously adjusted according to the pressure and airflow state. The device can redistribute the distribution state of the airflow after flowing through the elbow, thereby better balancing the pressure and pressure distribution state of the gas after flowing out of the elbow, and ultimately achieving the purpose of optimizing the working efficiency and stability of the compressor. In addition, when the inlet gas contains a small amount of solid particles, it will cause serious erosion and wear problems on the elbow. The setting of the drainage pipe can also improve the erosion and wear problem at the outlet of the elbow, thereby helping to reduce the probability of erosion and wear perforation at this location, and further extending the service life of the elbow. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an exploded schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0029] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention;

[0030] Figure 4 This is a three-dimensional schematic diagram of the inlet elbow connection structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the cutaway state of the inlet elbow of the present invention;

[0032] Figure 6 This is a schematic diagram of the installation structure of the driving worm and the driving worm wheel of the present invention.

[0033] In the figure: 1 compressor body, 2 assembly frame, 3 connecting flange pipe, 4 inlet elbow, 5 drainage port, 6 equal pressure distribution port, 7 air flow distribution cover, 8 drainage pipe, 9 flow rate adjustment motor, 10 air flow steering plate, 11 micro reduction motor, 12 drive worm, 13 drive worm gear, 14 drainage fin, 15 protective cover, 16 MEMS pressure sensor fin, 17 assembly ring. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1-6 , the present invention provides a technical solution:

[0036] Example 1:

[0037] A compressor inlet elbow anti-distortion optimization device includes a compressor body 1, the compressor body 1 is fixedly mounted on an assembly frame 2, a connecting flange pipe 3 is bolted fixedly mounted at the air inlet of the compressor body 1, and the connecting flange pipe 3 is bolted fixedly connected to the inlet elbow 4 at one end away from the compressor body 1;

[0038] The inlet elbow 4 is provided with a drainage port 5 and an equal pressure distribution port 6 that penetrate inside and outside;

[0039] The flow inlet 5 is opened at the outer elbow of the inlet elbow 4 and faces the tangent direction of the inlet air flow direction of the inlet elbow 4;

[0040] The equal pressure distribution port 6 is opened at the inner elbow of the inlet elbow 4. An airflow distribution cover 7 is also fixedly installed on the inner side of the inlet elbow 4. The air outlet of the airflow distribution cover 7 is oriented towards the air inlet of the compressor body 1.

[0041] The drainage port 5 and the equal pressure distribution port 6 are located outside the inlet elbow 4 and are connected through a connected drainage pipe 8. A flow rate regulating motor 9 is also installed on the drainage pipe 8.

[0042] An airflow steering plate 10 is also installed in a fixed-axis rotating manner at the front end of the airflow direction of the inlet bend pipe 4. The airflow steering plate 10 rotates at a preset angle under the control of a driving mechanism installed on the outside of the inlet bend pipe 4, and the flow direction of the airflow is adjusted by changing the direction of the airflow steering plate 10.

[0043] In this embodiment, the compressor body 1 adopts a mature and mass-produced solution in the prior art. It is fixedly installed using an assembly stand 2 and bolted to the inlet elbow 4 via a connecting flange pipe 3. This is also a common assembly method and solution in the prior art. Due to the limited assembly environment of the compressor body 1, an inlet elbow 4 is usually provided at the front end of the compressor body 1 to save assembly space, thereby improving space utilization. However, the introduction of the inlet elbow 4 causes gas distortion after passing through the inlet elbow 4. Airflow distortion refers to the uneven distribution of airflow in space and time, which affects the flow uniformity and pressure uniformity of the gas in the pipeline. After entering the compressor's turbofan, the distorted airflow causes surge, thereby increasing the turbofan's noise during operation and reducing the turbofan's service life. Laboratory analysis of the airflow state within the inlet elbow 4 shows that after entering the elbow, the inertial effect causes the main flow to deviate outward, resulting in fluid accumulation and increased static pressure on the outside, while the fluid is sparse and the static pressure is reduced on the inside, forming a significant radial pressure gradient (high outside and low inside). This pressure gradient drives the low-speed fluid in the near-wall area back along the pipe wall from the high-pressure outer side to the low-pressure inner side, while the high-speed fluid in the core area continues to migrate outward under the action of centrifugal force. The two work together to form a secondary circulation in the cross section, which returns from the inner wall through the center of the pipe to the outer wall, and eventually evolves into a pair of Dean vortices with opposite directions. The distortion caused by the flow through the bend will directly affect the performance of the compressor, resulting in a decrease in its working efficiency and operational stability. More seriously, after this distorted airflow enters the compressor body 1, it will not only cause abnormal noise, but also may cause uneven aerodynamic load on the turbofan blades due to non-uniform flow, which may lead to mechanical damage.According to the above characteristics, the inlet bend 4 in this embodiment has been unconventionally improved. Specifically, a drainage port 5 and an isobaric equalizing port 6 are provided. Referring to the drawings in the specification, it can be seen that the drainage port 5 is opened at the outer elbow of the inlet bend 4 and faces the tangent direction of the inlet air flow direction of the inlet bend 4, while the isobaric equalizing port 6 is opened at the inner elbow of the inlet bend 4. An airflow equalizing hood 7 is also fixedly installed on the inside of the inlet bend 4, and the air outlet of the airflow equalizing hood 7 faces the air inlet direction of the compressor body 1. The significance of such a design is that a part of the gas that flows close to the outer tube body due to inertia can be discharged through the drainage port 5 and output to the isobaric equalizing port 6 through the drainage pipe 8. At the same time, an airflow equalizing hood 7 is installed on the inside of the isobaric equalizing port 6 to compensate for the static pressure lost on the inside of the bend outlet, thereby achieving a balanced pipe. The effect of the internal pressure of the body, since the length of the drainage tube 8 is long and there are two changes in direction, the pressure in the drainage tube 8 will be affected. For this reason, a flow rate regulating motor 9 is also installed on the flow path of the drainage tube 8, so as to adjust it accordingly according to the flow rate state in the inlet elbow 4. In addition, an air flow redirecting plate 10 is also fixedly rotatably installed at the front end of the inlet air flow direction of the inlet elbow 4. The flow direction of the air flow can be changed by changing the direction of the air flow redirecting plate 10. The air flow redirecting plate 10 in this embodiment is designed to be a flat streamlined structure, so as to reduce the resistance of the gas in the process of flowing through the structure, and the deflection angle of the air flow redirecting plate 10 is between -5° and +5°, and it is stipulated that the direction of the plate body on the side of the air flow redirecting plate 10 close to the elbow toward the drainage port 5 is positive, refer to the attached instruction manual. Figure 3 In this cross-sectional view, when the airflow steering plate 10 is deflected so that the plate body on the side close to the bend is toward the side of the drainage port 5, more gas will be guided into the side of the drainage port 5. Conversely, when the airflow steering plate 10 is deflected so that the plate body on the side close to the bend is toward the inside of the bend, the gas will be guided more to flow through the original path of the inlet bend 4. Through the dual setting of the airflow steering plate 10 and the drainage pipe 8, the flow state of the airflow after flowing out of the inlet bend 4 can be effectively improved, thereby suppressing the formation of secondary flow in the bend, and finally making the airflow entering the compressor body 1 uniform, effectively improving the surge phenomenon of the compressor turbofan, and helping to extend the service life of the compressor. In addition, due to the setting of the drainage pipe 8, part of the gas that moves centrifugally to the outside can be discharged, thereby reducing the erosion pressure on the outer wall of the inlet bend 4, thereby reducing the probability of subsequent erosion, wear and perforation of the inlet bend 4, and further extending the service life of the inlet bend 4.

[0044] Example 2:

[0045] The driving mechanism that drives the airflow deflecting plate 10 to rotate at a preset angle is a micro reduction motor 11. A driving worm 12 is fixedly connected to the output shaft of the micro reduction motor 11. The rotating shaft at one end of the airflow deflecting plate 10 extends outward through the through hole opened on the inlet elbow 4 and is coaxially fixedly connected to the driving worm gear 13. The driving worm 12 is engaged with the driving worm gear 13, thereby changing the rotation angle of the airflow deflecting plate 10 by rotating the micro reduction motor 11.

[0046] In this embodiment, the driving mechanism of the airflow redirecting plate 10 is further disclosed. Since the pressure of the airflow in the inlet bend 4 is relatively high, it is necessary to maintain the stability of the airflow redirecting plate 10 during the airflow blowing process, and ensure that the airflow redirecting plate 10 can overcome the work of the large flow gas to perform angular deflection. Therefore, the driving mechanism of the airflow redirecting plate 10 is a micro reduction motor 11, which can output a large torque, and the micro reduction motor 11 is connected to the driving worm 12. Since the cooperation between the driving worm 12 and the driving worm wheel 13 has a reverse self-locking characteristic, after the micro reduction motor 11 is rotated and adjusted, the airflow redirecting plate 10 can be stabilized at the corresponding angle without changing. The setting of the above-mentioned driving structure can effectively ensure the angle adjustment of the airflow redirecting plate 10, and will not be affected by the internal airflow and cause uncontrolled deflection.

[0047] Example 3:

[0048] A drainage fin 14 is fixedly welded on the inner side of the inlet bend 4 near the drainage port 5, and the drainage fin 14 faces the air inlet of the inlet bend 4. In this embodiment, the setting of the drainage fin 14 can better guide the gas flowing into the drainage fin 14 into the drainage tube 8.

[0049] Example 4:

[0050] A protective cover 15 is also fixedly mounted on the outside of the inlet elbow 4, and the driving worm wheel 13 and the driving worm 12 are arranged in the protective cover 15. In this embodiment, the driving worm wheel 13 and the driving worm 12 are protected by the protective cover 15, which is a conventional setting made by those skilled in the art.

[0051] Embodiment 5:

[0052] An assembly groove is also provided at one end of the air outlet of the inlet elbow 4, in which a pressure detection device is fixedly installed. The pressure detection device consists of an assembly ring 17 and several MEMS pressure sensor fins 16. The MEMS pressure sensor fins 16 are installed in a ring array on the inner side of the assembly ring 17. The pressure distribution state at each position of the air outlet end of the inlet elbow 4 is detected by several MEMS pressure sensor fins 16.

[0053] The MEMS pressure sensor fin 16 is a fin structure composed of a MEMS chip.

[0054] In this embodiment, an assembly groove is provided in the inlet elbow 4, which can be used for embedding the assembly ring 17 of the pressure detection device, and the inner ring of the assembly ring 17 is kept flush with the surface of the inlet elbow 4. The MEMS pressure sensor fin 16 is deflected in the opposite direction of the turbofan rotation inside the compressor body 1, and the deflection angle is 10°. This setting can optimize the flow state of the gas flowing out of the inlet elbow 4 on the one hand, and on the other hand, the airflow state at different positions can be detected through the MEMS pressure sensor fin 16. The MEMS pressure sensor is a sensor that converts a pressure signal into an electrical signal using micro-electromechanical system technology. The core working principle is based on the microstructural deformation caused by pressure, and by converting this deformation into a measurable electrical signal, the pressure inside the inlet elbow 4 can be measured. The MEMS pressure sensor consists of a deformable film and two electrodes to form a capacitor. The micro-deformation caused by the pressure in the pipeline acting on the film triggers the change in capacitance, thereby measuring the pressure. This patch and microelectrode structure is just suitable for the fin structure in this application, and is connected to an external industrial computer through the integrated wiring harness led out from the assembly ring 17, so as to measure the pressure on each MEMS pressure sensor fin 16 in real time, which is convenient for making corresponding adjustments according to the pressure.

[0055] Example 6:

[0056] The flow rate regulating motor and the micro reduction motor are both electrically connected to the PLC controller, and the PLC controller autonomously adjusts the rotation speed of the flow rate regulating motor and the steering angle of the micro reduction motor.

[0057] In this embodiment, the flow rate regulating motor and the micro reduction motor are further controlled by a PLC controller. The advantage of this design is that after the gas enters the inlet elbow 4, it can be autonomously adjusted according to the fluid state parameters obtained at different flow rates in the laboratory, which greatly improves the intelligence level of the device.

[0058] A method for optimizing the anti-distortion of a compressor inlet elbow is provided, which uses the above-mentioned device for optimizing the anti-distortion of a compressor inlet elbow and comprises the following steps:

[0059] Step 1: Turn on the compressor body 1, and the gas is sucked in through the inlet elbow 4 by the rotation of the turbofan inside the compressor body 1, and the pressure distribution state at each position of the outlet end of the inlet elbow 4 is detected by the pressure detection device;

[0060] Step 2: Turn on the flow rate regulating motor 9 to introduce the gas flowing through the drainage port 5 into the air flow equalizing cover 7 through the drainage pipe 8, thereby improving the distortion of the air flow after passing through the inlet elbow 4, and again detect the pressure distribution state at each position of the outlet end of the inlet elbow 4 through the pressure detection device while changing the speed of the flow rate regulating motor 9, until the pressure deviation of each part of the pressure detection device is adjusted to be within the set range, thereby completing the improvement operation of the air flow distortion. If it cannot be adjusted to the preset range, proceed to step 3;

[0061] Step three: Make the flow rate regulating motor 9 at different constant speeds, and control the airflow steering plate 10 to rotate at a preset angle at each constant speed to adjust the flow direction of the gas when it reaches the bend of the inlet bend 4. When the pressure detection device detects that the pressure of the MEMS pressure sensor fin 18 near the inner side of the inlet bend 4 is higher, the deflection of the airflow steering plate 10 is controlled to make the gas flow toward the side of the drainage port 5 on the outside. Otherwise, the airflow steering plate 10 is controlled to make the gas flow toward the inner side of the inlet bend 4, until the pressure deviation of each part of the pressure detection device is adjusted to be within the set range, thereby completing the improvement operation of the airflow distortion.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A compressor inlet elbow anti-distortion optimization device, comprising a compressor body, the compressor body fixedly mounted on an assembly stand, a connecting flange pipe boltedly mounted at an air inlet of the compressor body, the connecting flange pipe having an end remote from the compressor body fixedly connected to the inlet elbow by bolts; characterized in that: The inlet elbow is provided with a drainage port and an equal pressure distribution port that penetrate inside and outside; The drainage port is opened at the outer elbow of the inlet elbow and faces the tangent direction of the inlet air flow direction of the inlet elbow; The isobaric distribution port is opened at the inner elbow of the inlet elbow, and an airflow distribution cover is fixedly installed on the inner side of the inlet elbow, and the air outlet of the airflow distribution cover is facing the air inlet of the compressor body; The drainage port and the equal pressure distribution port are located on the outside of the inlet elbow and are connected by a connected drainage pipe. A flow rate regulating motor is also installed on the drainage pipe. When the flow rate regulating motor is turned on, the gas flowing through the drainage port is introduced into the air flow distribution cover through the drainage pipe, thereby improving the distortion of the air flow after passing through the inlet elbow. An airflow deflector plate is also installed at the front end of the inlet bend in a fixed-axis rotatable manner. The airflow deflector plate rotates at a preset angle under the control of a driving mechanism installed on the outside of the inlet bend, thereby adjusting the flow direction of the airflow by changing the direction of the airflow deflector plate. An assembly groove is also provided at one end of the air outlet of the inlet elbow, and a pressure detection device is fixedly installed in the assembly groove. The pressure detection device consists of an assembly ring and a plurality of MEMS pressure sensor fins. The MEMS pressure sensor fins are installed in a ring array on the inner side of the assembly ring, and the pressure distribution state at each position of the air outlet end of the inlet elbow is detected by the plurality of MEMS pressure sensor fins.

2. The compressor inlet elbow anti-distortion optimization device according to claim 1, characterized in that: The driving mechanism that drives the airflow deflecting plate to rotate at a preset angle is a micro reduction motor, and a driving worm is fixedly connected to the output shaft of the micro reduction motor. The rotating shaft at one end of the airflow deflecting plate extends outward through a through hole opened on the inlet elbow and is coaxially fixedly connected to the driving worm gear. The driving worm gear is engaged with the driving worm gear, thereby changing the rotation angle of the airflow deflecting plate by rotating the micro reduction motor.

3. The compressor inlet elbow anti-distortion optimization device according to claim 1 or 2, characterized in that: A drainage fin is fixedly welded on the inner side of the inlet elbow near the drainage port, and the drainage fin faces the air inlet of the inlet elbow.

4. The compressor inlet elbow anti-distortion optimization device according to claim 2, characterized in that: A protective cover is also fixedly installed on the outside of the inlet elbow, and the driving worm wheel and the driving worm are arranged in the protective cover.

5. The compressor inlet elbow anti-distortion optimization device according to claim 3, characterized in that: The MEMS pressure sensor fin is a fin structure composed of MEMS chips.

6. The compressor inlet elbow anti-distortion optimization device according to claim 5, characterized in that: The flow rate regulating motor and the micro reduction motor are both electrically connected to the PLC controller, and the PLC controller autonomously adjusts the rotation speed of the flow rate regulating motor and the steering angle of the micro reduction motor.

7. A method for optimizing the anti-distortion of a compressor inlet elbow, using the anti-distortion optimization device for the compressor inlet elbow according to claim 5, characterized in that: The following steps are involved: Step 1: Open the compressor body, and draw gas through the inlet elbow by rotating the turbofan inside the compressor body, and use the pressure detection device to detect the pressure distribution state at each position of the outlet end of the inlet elbow; Step 2: Turn on the flow rate regulating motor to introduce the gas flowing through the drainage port into the air flow distribution hood through the drainage pipe, thereby improving the distortion of the air flow after passing through the inlet elbow. The pressure distribution state at each position of the outlet end of the inlet elbow is detected again by the pressure detection device while changing the speed of the flow rate regulating motor until the pressure deviation of each part of the pressure detection device is adjusted to be within the set range, thereby completing the improvement operation of the air flow distortion. If it cannot be adjusted to the preset range, proceed to step 3. Step 3: Make the flow rate regulating motor at different constant speeds, and control the airflow steering plate to rotate at a preset angle at each constant speed to adjust the flow direction of the gas when it reaches the bend of the inlet pipeline, until the pressure deviation of each part of the pressure detection device is adjusted to be within the set range, thereby completing the improvement operation of the airflow distortion.

Images