A development verification method for a centrifugal compressor

Abstract

The present invention discloses a development verification method for a centrifugal compressor. S1: Select a compressor with adjustable parameters as required. The compressor includes a transmission gearbox, a centrifugal impeller, a sealing assembly, and a motor. S2: The compressor, a gas generating device, and a gas energy recovery device are connected through a ventilation pipe. Perform a hardware self-check and initialization, set target parameters. The gas generating device generates gas according to the target parameters and pumps it into the ventilation pipe, and collect sensor information. S3: The compressor executes a preset motor output power strategy, detects the parameters of the outlet sensor, and simultaneously obtains the real-time data of the second inlet sensor, and records the instantaneous power data of the motor. S4: Judge whether the design requirements are met according to the parameter indicators, and drive the centrifugal impeller to change parameters by adjusting the transmission gearbox. Repeat steps two to three until the experiment is completed. The laboratory adjusts the power of the compressor according to different requirements, and only adjusts the core components, which reduces the development difficulty and meets the requirements of industrialized and serialized development.

Description

Technical Field

[0001] The present invention belongs to the field of semi-physical simulation verification systems for the serialized development of chemical equipment, and is used for the serialized development of a regeneration gas compressor. Specifically, it relates to a development verification method for a centrifugal compressor. Background Art

[0002] Centrifugal compressors are widely used in chemical industries such as natural gas, petroleum, and coke oven gas. According to the process parameter requirements of the regeneration gas in some specific chemical processes, conventional models of centrifugal compressors usually cannot meet the process requirements. Therefore, new centrifugal compressors need to be developed according to the characteristics of these regeneration gases. Developing a centrifugal compressor is a complex systematic project that requires determining a serialized development plan to meet the compressor inlet pressure, pressure ratio requirements, and flow rate changes, and also requires ensuring that the specifications of the core compressor flow components and high-speed permanent magnet motors are minimized. Currently, more development uses computational fluid dynamics simulation software for simulation and then physical processing verification, resulting in high development costs.

[0003] The present invention provides an optimized development verification system for a centrifugal compressor. This system can adjust the parameters of the centrifugal compressor according to different situations and is suitable for industrial applications; under the conditions of meeting the compressor inlet pressure, pressure ratio requirements, and flow parameter index requirements, it optimizes and verifies the development of the compressor, reduces the difficulty of development and supporting, and meets the requirements of industrialized and serialized development. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a development verification method for a centrifugal compressor that can replace relevant equipment as needed.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A development verification method for a centrifugal compressor, including the following steps. S1, select a compressor with adjustable parameters according to the theoretical models with different inlet pressure, pressure ratio requirements, and flow parameter index requirements. The compressor includes a transmission gearbox, a centrifugal impeller, a sealing component, and a motor.

[0006] S2, install the compressor, a gas generating device, and a gas energy recovery device on a platform base and connect them through a ventilation pipe. A bypass circuit pipe is also provided on the ventilation pipe. Perform hardware self-check initialization, set parameters such as the target gas temperature and pressure values. The gas generating device generates corresponding gas according to the target parameters and pumps it into the compressor through the ventilation pipe. The gas generating device simultaneously obtains the sensor information of the ventilation pipe through a first inlet sensor and performs real-time feedback control.

[0007] S3. The bypass circuit pipe is closed, and the compressor starts up. The gas passes through the compressor, and the compressor executes the preset motor output power. The parameters of the outlet sensor on the vent pipe at the outlet end of the compressor are detected, and at the same time, the real-time data of the second inlet sensor on the vent pipe at the inlet end of the compressor unit is obtained. The instantaneous power data of the motor is recorded simultaneously. The gas energy recovery device recovers the gas and then detects it through the first sensor and returns it to the gas generating device;

[0008] S4. Determine whether the design requirements are met according to the parameter indicators. Adjust the transmission gearbox to drive the centrifugal impeller to change the parameters, and repeat steps two to three until the verification experiment is completed.

[0009] Further, a plurality of first transmission gears with different tooth pitches and detachably connected to the connecting shaft of the centrifugal impeller are provided in the transmission gearbox. A plurality of second transmission gears detachably connected to the output shaft and cooperating with the first transmission gears are also provided in the box. The first transmission gear meshes with the corresponding second transmission gear;

[0010] On one side of the inner cavity of the transmission gearbox opposite to the output shaft, there is an annular groove. An annular ring is slidably provided in the groove. A driver for driving the annular ring to rotate in the groove is provided on the edge of the annular ring. On one side of each second transmission gear facing the annular ring, there is a first connecting rod. A second connecting rod is also provided between the first connecting rod and the annular ring. The second connecting rod is fixedly connected to the annular ring. The first connecting rod is rotatably connected to the second connecting rod. A plurality of second connecting rods are equidistantly distributed on the annular ring;

[0011] An induction electromagnet is fixedly provided at the end of the second transmission gear facing the axis of the output shaft. The induction electromagnet can be disconnected or connected to the end of the output shaft by turning on and off the power supply. A fastening connecting piece is also provided between the second transmission gear and the output shaft. The fastening connecting piece further strengthens the connection between the second transmission gear and the output shaft; The replacement of the connection method between the centrifugal impeller and the first transmission gear is the same as the replacement of the connection method between the output shaft and the second transmission gear.

[0012] Further, the fastening connecting piece includes a plurality of first teeth provided at intervals along the circumference of the output shaft, and also includes a clamping cylinder provided at the axis on the side of the second transmission gear facing the output shaft. The clamping cylinder can be sleeved on the output shaft. A plurality of second teeth cooperating with the first teeth are provided along the circumference in the inner cavity of the clamping cylinder; The cross-section of the first tooth is in a "U" shape, and the second tooth is in a "U" shape adapted to the first tooth. One side of the first tooth is fixed to the output shaft, and one side of the second tooth is fixed to the inner side wall of the clamping cylinder. The second tooth is clamped with the first tooth and can rotate relative to the first tooth. A notch adapted to the second tooth is left between adjacent first teeth. A limiting member is also provided between the first tooth and the second tooth.

[0013] Further, the limiting member includes a retaining piece provided on one side of each first tooth, and the retaining piece is used to limit the second tooth after the second tooth is engaged with the first tooth. Each retaining piece is provided on the same side of each first tooth. The limiting member further includes a first limiting groove, and the first limiting groove is provided at the top of the opposite end of the first tooth and the output shaft. A spring is provided at the bottom of the first limiting groove, and one end of the spring away from the groove bottom is connected with a limiting post. A second limiting groove for inserting the limiting post is provided at the "U"-shaped bottom end of the second tooth.

[0014] Further, the method further includes a control component subsystem, and the control component subsystem includes a sensor signal processor, a central controller, and a control instruction generator.

[0015] Further, the gas energy recovery device is a differential pressure turbine type expansion generator, including an expansion turbine and a transmission shaft, and the transmission shaft is connected with the generator input shaft.

[0016] Further, an electric control valve system is further provided on the ventilation pipe, and the electric control valve system includes at least a first electric control valve, a second electric control valve, and a third electric control valve. The first electric control valve is provided on the ventilation pipe between the second inlet sensor and the gas generating device, the second electric control valve is provided on the ventilation pipe between the outlet sensor and the gas energy recovery device, and the third electric control valve is provided between the gas energy recovery device and the first inlet sensor.

[0017] Further, the electric control valve system further includes a fourth electric control valve and a fifth electric control valve. The ventilation pipe where the outlet sensor is installed is externally connected to the fourth electric control valve; the bypass loop pipe is controlled to open and close by installing the fifth electric control valve.

[0018] Further, the sensors all include a flow sensor, a pressure sensor, and a temperature sensor.

[0019] Further, the first electric control valve, the second electric control valve, the third electric control valve, the fourth electric control valve, and the fifth electric control valve are all combinations of one or more valves among solenoid valves, pressure reducing valves, and safety valves.

[0020] The beneficial effects of the present invention are as follows:

[0021] A semi-physical simulation platform is built. When the parameters of the compressor unit subsystem need to be adjusted, directly controlling the gear change in the gearbox can obtain the compressor unit subsystem with different parameters, without replacing the motor, saving costs, being more convenient for use in the process, reducing the development difficulty, and meeting the requirements of industrialized and serialized development; at the same time, a differential pressure expansion generator is matched in the gas circulation generating device to recover the kinetic energy of the high-pressure gas generated by the compressor, realizing energy conservation.

[0022] Other advantages, objects and features of the present invention will be set forth in the following description, and to some extent will be obvious to those skilled in the art, or can be learned from the practice of the present invention by those skilled in the art.

[0023] The objects and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the objects, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0025] Figure 1 is a schematic flow chart of the present invention;

[0026] Figure 2 is a schematic overall structure diagram of the transmission gearbox;

[0027] Figure 3 is a partial schematic diagram of the transmission gearbox;

[0028] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0029] Figure 5 is Figure 4 an enlarged schematic diagram of part B in

[0030] Figure 6 is a schematic cross-sectional diagram of the annular ring;

[0031] Figure 7 is a logic control diagram of the present invention.

[0032] The reference signs in the drawings are as follows: platform base 1, gas generating device 2, compressor 3, transmission gearbox 31, first transmission gear 311, second transmission gear 312, annular ring 313, driver 314, first connecting rod 315, second connecting rod 316, centrifugal impeller 32, sealing assembly 33, motor 34, output shaft 341, fastening connecting piece 35, first engaging tooth 351, cartridge 352, second engaging tooth 353, limiting member 36, first limiting groove 362, spring 363, limiting post 364, second limiting groove 365, gas energy recovery device 4, expansion generator 41, expansion turbine 42, first inlet sensor 51, second inlet sensor 52, outlet sensor 53, first electric control valve 61, second electric control valve 62, third electric control valve 63, fourth electric control valve 64, fifth electric control valve 65, ventilation pipe 71, bypass circuit pipe 72. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] As Figure 1 , Figure 2 , Figure 3 ,Figure 4 and Figure 5 As shown in Figure 5 , the present invention discloses a development verification method for a centrifugal compressor, including the following steps: S1. According to different inlet pressure, pressure ratio requirements, and theoretical model requirements of flow parameter indicators, a compressor 3 with adjustable parameters is selected. The compressor 3 includes a transmission gearbox 31, a centrifugal impeller 32, a sealing assembly 33, and a motor 34.

[0034] S2. The compressor 3, the gas generating device 2, and the gas energy recovery device 4 are installed on the platform base 1 and connected through a ventilation pipe 71. A bypass circuit pipe 72 is also provided on the ventilation pipe 71. Hardware self-check initialization is performed, and parameters such as the target gas temperature and pressure values are set. The gas generating device 2 generates corresponding gas according to the target parameters and pumps it into the ventilation pipe 71. At the same time, the gas generating device 2 obtains the sensor information of the ventilation pipe 71 through the first inlet sensor 51 and performs real-time feedback control.

[0035] S3. The bypass circuit pipe 72 is closed, the compressor 3 is started, the gas passes through the compressor 3, the compressor 3 executes a preset motor 34 output power strategy, the parameters of the outlet sensor 53 on the ventilation pipe 71 at the outlet end of the compressor 3 are detected, and at the same time, the real-time data of the second inlet sensor 52 on the ventilation pipe 71 at the inlet end of the compressor 3 group is obtained. The instantaneous power data of the motor 34 is recorded simultaneously. The gas energy recovery device 4 recovers the gas and then detects it back into the gas generating device 2 through the first sensor 51.

[0036] S4. It is judged whether the parameter indicators meet the design requirements. By adjusting the transmission gearbox 31 to drive the centrifugal impeller 32 to change parameters, steps two to three are repeated until the verification experiment is completed.

[0037] In this solution, during the experiment, power conversion is realized inside the transmission gearbox 31 according to different inlet pressure, pressure ratio requirements, and flow parameter indicators, etc., for simulation tests, which reduces the development difficulty of the experiment and is beneficial to meeting the requirements of industrialized and serialized development.

[0038] A plurality of first transmission gears 311 with different tooth pitches and detachably connected to the connecting shaft of the centrifugal impeller 32 are provided inside the transmission gearbox 31. A plurality of second transmission gears 312 detachably connected to the output shaft 341 and cooperating with the first transmission gears 311 are also provided inside the box. The first transmission gears 311 are engaged with the corresponding second transmission gears 312.

[0039] On one side of the inner cavity of the transmission gearbox 31 opposite to the output shaft 341, there is an annular groove. An annular ring 313 is slidably arranged in the groove. A driver 314 for driving the annular ring 313 to rotate in the groove is arranged on the edge of the annular ring 313. On one side of each second transmission gear 312 facing the annular ring 313, there is a first connecting rod 315. A second connecting rod 316 is also arranged between the first connecting rod 315 and the annular ring 313. The second connecting rod 316 is fixedly connected to the annular ring 313. The first connecting rod 315 is rotatably connected to the second connecting rod 316. A plurality of second connecting rods 316 are equidistantly distributed on the annular ring 313;

[0040] An induction electromagnet is fixedly arranged at one end of the second transmission gear 312 facing the axis of the output shaft 341. The induction electromagnet can be disconnected or connected to the end of the output shaft 341 by turning on or off the power supply. A fastening connecting piece 35 is also arranged between the second transmission gear 312 and the output shaft 341. The fastening connecting piece 35 further strengthens the connection between the second transmission gear 312 and the output shaft 341; The replacement of the connection method between the centrifugal impeller 32 and the first transmission gear 311 is the same as the replacement of the connection method between the output shaft 341 and the second transmission gear 312.

[0041] In this solution, when the power of the centrifugal impeller 32 needs to be adjusted during the experiment process, the driver 314 drives the annular ring 313 to rotate in the groove. The annular ring 313 drives the second transmission gear 312 to rotate. The distance that the driver 314 drives the second transmission gear 312 to rotate each time is exactly the interval distance between the second transmission gears 312. In this way, after the previous second transmission gear 312 moves away, the next second transmission gear 312 can just be opposite to the output shaft 341. The induction electromagnet is energized or de-energized to connect the axis of the second gear to the output shaft 341. When it needs to move, just de-energize the induction electromagnet. At the same time, the fastening connecting piece 35 can make the connection between the axis of the second gear and the output shaft 341 closer, reducing the possibility of falling during operation. Similarly, adjust the connecting shaft between the first transmission gear 311 and the centrifugal impeller 32, so that the transmission gearbox 31 can automatically adjust the power of the centrifugal impeller 32 without replacing the motor 34.

[0042] The fastening connection member 35 includes a plurality of first teeth 351 arranged at intervals along the circumference of the output shaft 341, and further includes a clamping cylinder 352 provided on the axis on the side of the second transmission gear 312 facing the output shaft 341. The clamping cylinder 352 can be sleeved on the output shaft 341, and a plurality of second teeth 353 adapted to the first teeth 351 are arranged along the circumference in the inner cavity of the clamping cylinder 352; the cross-section of the first teeth 351 is in a "U" shape, the second teeth 353 are in a "U" shape adapted to the first teeth 351, one side of the first teeth 351 is fixed to the output shaft 341, one side of the second teeth 353 is fixed to the inner side wall of the clamping cylinder 352, the second teeth 353 are clamped with the first teeth 351 and can rotate relative to the first teeth 351, a notch adapted to the second teeth 353 is left between adjacent first teeth 351, and a limiting member 36 is further provided between the first teeth 351 and the second teeth 353.

[0043] In this solution, when the motor 34 rotates the annular ring 313 and the second transmission gear 312 is aligned with the output shaft 341, the output shaft 341 is inserted into the clamping cylinder 352, then the second teeth 353 are inserted into the gaps of the first gear. The motor 34 then drives the annular ring 313 to rotate slightly, enabling the second teeth 353 to be clamped with the first gear. Since a limiting member 36 is further provided between the first teeth 351 and the second teeth 353, the possibility of the first teeth 351 and the second teeth 353 falling off after being clamped is further reduced.

[0044] The limiting member 36 includes a retaining piece (not shown in the figure) provided on one side of each first tooth 351. The retaining piece is used to limit the second tooth 353 after the second tooth 353 is clamped with the first tooth 351. Each retaining piece is provided on the same side of each first tooth 351. The limiting member 36 further includes a first limiting groove 362. The first limiting groove 362 is provided at the top of the opposite end of the first tooth 351 and the output shaft 341. A spring 363 is provided at the bottom of the first limiting groove 362. One end of the spring 363 away from the bottom of the groove is connected with a limiting post 364. A second limiting groove 365 for inserting the limiting post 364 is provided at the "U" - shaped bottom end of the second tooth 353.

[0045] In this solution, during the rotation of the second teeth 353 relative to the first teeth 351, since a baffle is provided on one side of the first teeth 351, the second transmission gear 312 can only move in one direction, so the first teeth 351 and the second teeth 353 will not fall out after being clamped. Since the spring 363 is compressed in the first limiting groove 362 under the extrusion of the limiting post 364, when the first teeth 351 and the second teeth 353 are properly clamped, the limiting post 364 enters the second limiting groove 365 under the thrust of the spring 363. This further improves the clamping tightness of the first teeth 351 and the second teeth 353 and reduces the possibility of them disengaging during operation.

[0046] The system further includes a control component subsystem, which includes a sensor signal processor, a central controller, and a control instruction generator.

[0047] In this solution, after setting the control component subsystem to receive the sensor subsystem, it issues instructions to other components for control, making the entire experimental process more intelligent.

[0048] An electric control valve system is provided on the ventilation pipe 71. The electric control valve system includes at least a first electric control valve 61, a second electric control valve 62, a third electric control valve 63, a fourth electric control valve 64, and a fifth electric control valve 65. The first electric control valve 61 is provided on the ventilation pipe 71 between the second inlet sensor 52 and the gas generation device 2. The second electric control valve 62 is provided on the ventilation pipe 71 between the outlet sensor 53 and the gas energy recovery device 4. The third electric control valve 63 is provided between the gas energy recovery device 4 and the first inlet sensor 51. Outside the ventilation pipe 71 where the outlet sensor 53 is installed and the fourth electric control valve 64, the bypass loop pipe 72 is controlled to open and close by installing the fifth electric control valve 65. The first electric control valve 61, the second electric control valve 62, the third electric control valve 63, the fourth electric control valve 64, and the fifth electric control valve 65 are each a combination of one or more valves among solenoid valves, pressure reducing valves, and safety valves.

[0049] In this solution, the opening and closing of the ventilation pipe 71 is controlled by a solenoid valve. Thresholds are set in advance for the flow sensor, pressure sensor, and temperature sensor. When the parameter indicators detected by the flow sensor, pressure sensor, and temperature sensor exceed the safety threshold, the central controller controls the pressure reducing valve to relieve pressure, and in cooperation with the safety valve, it plays a role in protecting safety, making the operation process of the entire test system safer.

[0050] The sensors all include a flow sensor, a pressure sensor, and a temperature sensor.

[0051] In this solution, during the experiment, the flow sensor, pressure sensor, and temperature sensor are used to measure the flow rate, pressure, and temperature in real time, which can make the data more accurate and improve the accuracy of the signal.

[0052] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A development verification method for a centrifugal compressor, characterized in that: It includes the following steps, S1. Select a compressor with adjustable parameters according to the theoretical models with different inlet pressure, pressure ratio requirements, and flow parameter index requirements. The compressor includes a transmission gearbox, a centrifugal impeller, a sealing component, and a motor; S2. Install the compressor, a gas generating device, and a gas energy recovery device on a platform base and connect them through a ventilation pipe. A bypass circuit pipe is also provided on the ventilation pipe. Perform hardware self-check initialization, set the target gas temperature and pressure value parameters. The gas generating device generates corresponding gas according to the target parameters and pumps it into the compressor through the ventilation pipe. The gas generating device simultaneously obtains the sensor information of the ventilation pipe through a first inlet sensor assembly for real-time feedback control; S3. Close the bypass circuit pipe, start the compressor, the gas passes through the compressor, the compressor executes a preset motor output power, detect the outlet sensor parameters on the ventilation pipe at the outlet end of the compressor, and simultaneously obtain the real-time data of the second inlet sensor assembly on the ventilation pipe at the inlet end of the compressor unit. Record the instantaneous power data of the motor at the same time. The gas energy recovery device recovers the gas and then detects it back into the gas generating device through the first inlet sensor assembly; S4. Judge whether the parameter indexes meet the design requirements. Drive the centrifugal impeller to change parameters by adjusting the transmission gearbox, and repeat steps two to three until the verification experiment is completed.

2. A development verification method for a centrifugal compressor according to claim 1, characterized in that: A plurality of first transmission gears with different tooth pitches and detachably connected to the connecting shaft of the centrifugal impeller are provided in the transmission gearbox. A plurality of second transmission gears detachably connected to the output shaft and cooperating with the first transmission gears are also provided in the box. The first transmission gears mesh with the corresponding second transmission gears; On one side of the inner cavity of the transmission gearbox opposite to the output shaft, there is an annular groove. An annular ring is slidably provided in the groove. A driver for driving the annular ring to rotate in the groove is provided on the edge of the annular ring. On one side of each second transmission gear facing the annular ring, there is a first connecting rod. A second connecting rod is also provided between the first connecting rod and the annular ring. The second connecting rod is fixedly connected to the annular ring. The first connecting rod is rotatably connected to the second connecting rod. A plurality of second connecting rods are equidistantly distributed on the annular ring; An induction electromagnet is fixedly provided at the end of the second transmission gear facing the axis of the output shaft. The induction electromagnet can be disconnected or connected to the end of the output shaft by turning on and off the power supply. A fastening connecting piece is also provided between the second transmission gear and the output shaft. The fastening connecting piece further strengthens the connection between the second transmission gear and the output shaft; The connection method between the centrifugal impeller and the first transmission gear is the same as the connection method between the output shaft and the second transmission gear.

3. A development verification method for a centrifugal compressor according to claim 2, characterized in that: The fastening and connecting member includes a plurality of first locking teeth arranged at intervals along the circumferential direction of the output shaft, and further includes a locking cylinder provided on the axis on the side of the second transmission gear facing the output shaft. The locking cylinder can be sleeved on the output shaft, and a plurality of second locking teeth adapted to the first locking teeth are arranged along the circumferential direction in the inner cavity of the locking cylinder; the cross section of the first locking tooth is in a "U" shape, the second locking tooth is in a "U" shape adapted to the first locking tooth, one side of the first locking tooth is fixed to the output shaft, one side of the second locking tooth is fixed to the inner side wall of the locking cylinder, the second locking tooth is locked with the first locking tooth and can rotate relative to the first locking tooth, a notch adapted to the second locking tooth is left between adjacent first locking teeth, and a limiting member is further provided between the first locking tooth and the second locking tooth.

4. The method for developing and verifying a centrifugal compressor according to claim 3, characterized in that: The limiting member includes a retaining piece provided on one side of each first locking tooth. The retaining piece is used to limit the second locking tooth after the second locking tooth is locked with the first locking tooth. Each retaining piece is arranged at the same side position of each first locking tooth. The limiting member further includes a first limiting groove. The first limiting groove is arranged at the top of the opposite end of the first locking tooth and the output shaft. A spring is provided at the bottom of the first limiting groove. One end of the spring away from the groove bottom is connected with a limiting post. A second limiting groove for inserting the limiting post is provided at the "U" - shaped bottom end of the second locking tooth.

5. The method for developing and verifying a centrifugal compressor according to claim 1, characterized in that: The verification method further includes a control component subsystem. The control component subsystem includes a sensor signal processor, a central controller, and a control instruction generator.

6. The method for developing and verifying a centrifugal compressor according to claim 1, characterized in that: The gas energy recovery device is a differential pressure turbine - type expansion generator, including an expansion turbine and a transmission shaft. The transmission shaft is connected to the input shaft of the generator.

7. The method for developing and verifying a centrifugal compressor according to claim 1, characterized in that: An electric control valve system is further provided on the ventilation pipe. The electric control valve system includes a first electric control valve, a second electric control valve, and a third electric control valve. The first electric control valve is arranged on the ventilation pipe between the second inlet sensor assembly and the gas generating device. The second electric control valve is arranged on the ventilation pipe between the outlet sensor and the gas energy recovery device. The third electric control valve is arranged between the gas energy recovery device and the first inlet sensor assembly.

8. The method for developing and verifying a centrifugal compressor according to claim 7, characterized in that: The electric control valve system further includes a fourth electric control valve and a fifth electric control valve. The ventilation pipe where the outlet sensor is installed is externally connected to the fourth electric control valve; the bypass loop pipe is controlled to open and close by installing the fifth electric control valve.

9. The method for developing and verifying a centrifugal compressor according to claim 1, characterized in that: Both the first inlet sensor assembly and the second inlet sensor assembly include a flow sensor, a pressure sensor, and a temperature sensor.

10. The method for developing and verifying a centrifugal compressor according to claim 8, characterized in that: The first electric control valve, the second electric control valve, the third electric control valve, the fourth electric control valve and the fifth electric control valve are each a combination of one or more valves among solenoid valves, pressure reducing valves and safety valves.

Images