CN113565748A - Performance test equipment and method for compressor - Google Patents
Performance test equipment and method for compressor Download PDFInfo
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- CN113565748A CN113565748A CN202111111634.0A CN202111111634A CN113565748A CN 113565748 A CN113565748 A CN 113565748A CN 202111111634 A CN202111111634 A CN 202111111634A CN 113565748 A CN113565748 A CN 113565748A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Abstract
The invention discloses a performance test device and a test method of a compressor, which are applied to the field of performance test of compressors and have the technical scheme that: the test device comprises a support plate and a test bearing plate for mounting a compressor to be tested; a support frame is arranged on the support plate, and an air suction testing mechanism for testing air suction pressure and an exhaust testing mechanism for testing exhaust pressure are arranged on the support frame; the air suction testing mechanism comprises an air inlet pipe, an air inlet pressure sensor and an air inlet pressure control assembly, wherein the air inlet pipe is communicated with an air inlet of the compressor; the exhaust testing mechanism comprises an exhaust pipe, an exhaust pressure sensor and a pressure-bearing assembly, wherein the exhaust pipe is communicated with an exhaust port of the compressor; the support frame is provided with a vibration detection assembly for detecting the vibration amplitude of the compressor during working; the method has the technical effect that a plurality of different parameters can be detected simultaneously, so that the performance of the compressor can be detected more truly and accurately.
Description
Technical Field
The invention relates to the field of performance test of compressors, in particular to performance test equipment and a performance test method of a compressor.
Background
The compressor is a key component of a refrigeration system, is mainly applied to refrigeration equipment such as a refrigerator and an air conditioner, and the performance of the compressor directly influences the refrigeration effect of the air conditioner or the refrigerator; therefore, the compressor is often subjected to strict testing before being shipped out.
At present, chinese patent invention with publication number CN103321887B discloses a device for testing the performance of an empty machine of a compressor, and discloses a device for testing the performance of an empty machine of a compressor, which comprises: a standard qualified compressor and a compressor to be detected; the motor shafts of the standard qualified compressor and the compressor to be tested are connected together through a shaft-holding mechanism, and a torque tester is arranged on the shaft-holding mechanism; the compressor to be detected is connected with a working power supply, and a comprehensive electricity meter is arranged between the working power supply and the compressor to be detected; the pressure gauge and the flowmeter are connected to the standard qualified compressor and are respectively used for detecting the pressure and the flow of the standard qualified compressor.
The existing testing equipment reflects the performance of the compressor from the side by testing the torque force of the motor, and the results obtained by the testing equipment and the testing method are not direct enough, so that the deviation of the testing results can be caused.
The Chinese patent application with the publication number of CN102966524A discloses a low suction superheat performance testing device of a refrigeration compressor, which comprises an oil separator connected with the outlet of the compressor, wherein the oil separator is communicated with a gas cooler through a gaseous refrigerant pipeline (A), the gaseous refrigerant pipeline (A) is provided with a first regulating valve, and the outlet of the gas cooler is communicated with the inlet of the compressor; the oil separator is also communicated with the gas cooler through a liquid refrigerant pipeline (B), and a condenser, a liquid storage device, a subcooler, a drying filter and a second regulating valve are sequentially connected in series with the liquid refrigerant pipeline (B) from one side of the oil separator to one side of the gas cooler; the testing device is also provided with a suction superheat reducing pipeline (C), wherein the inlet end of the suction superheat reducing pipeline (C) is arranged on a pipeline between the outlet of the condenser and the inlet of the gas cooler of the liquid refrigerant pipeline (B), and the outlet end of the suction superheat reducing pipeline (C) is arranged on a pipeline between the outlet of the gas cooler and the inlet of the compressor; the refrigerant flowing out from the suction superheat reducing pipeline (C) is mixed with the refrigerant flowing out from the outlet of the gas cooler to form low superheat gas which enables the compressor to be in a normal working condition, and the low superheat gas enters the compressor and completes refrigerant circulation.
The prior testing device is to run the compressor at full load and then test the refrigerating performance of the compressor, but generally the compressor is not run at full load, and the running process of the compressor is dynamic.
It is desirable to provide a better compressor testing apparatus and testing method to solve the above problems.
Disclosure of Invention
The invention aims to provide performance testing equipment of a compressor, which has the advantage that a plurality of different parameters can be detected simultaneously so as to detect the performance of the compressor more truly and accurately.
The technical purpose of the invention is realized by the following technical scheme: a performance test device of a compressor comprises a support plate and a test bearing plate for mounting the compressor to be tested;
the supporting plate is provided with a supporting frame, and the supporting frame is provided with an air suction testing mechanism for testing air suction pressure and an exhaust testing mechanism for testing exhaust pressure;
the air suction testing mechanism comprises an air inlet pipe, an air inlet pressure sensor and an air inlet pressure control assembly, wherein the air inlet pipe is communicated with an air inlet of the compressor;
the exhaust testing mechanism comprises an exhaust pipe, an exhaust pressure sensor and a pressure-bearing assembly, wherein the exhaust pipe is communicated with an exhaust port of the compressor;
and the support frame is provided with a vibration detection assembly for detecting the vibration amplitude of the compressor during working.
Through the technical scheme, the support frame is used for supporting the air suction testing mechanism, the air exhaust testing mechanism and the vibration detecting assembly, so that a plurality of detecting assemblies are integrated together, centralized maintenance and centralized use are facilitated, and convenience is improved; the test bearing plate is used for bearing the compressor to be tested so as to stably fix the compressor to be tested, interference of external factors is well reduced, and test data can be more accurately obtained; the air suction testing mechanism is used for detecting the pressure of the gas entering the compressor to be tested so as to control the pressure of the entering gas; the exhaust pipe in the exhaust testing mechanism is used for guiding the exhaust of gas, and the exhaust pressure sensor is used for detecting the pressure of the gas output by the compressor in real time so as to obtain the performance of the compressor; the pressure-bearing assembly is used for keeping the gas output by the compressor in the exhaust pipe, and the gas pressure generated by the pressure-bearing assembly is greater than the gas pressure output by the compressor, so that the situation that the pressure is rapidly reduced due to the escape of the gas output by the compressor can be better avoided, and the test result is more accurate; the vibration test assembly is used for detecting the vibration condition of the compressor during working, and an alarm signal can be sent out if the vibration amplitude is large.
The invention is further configured to: the air inlet pressure control assembly comprises an air suction pipe, an air inlet pressure regulating valve and an air inlet control valve, the air suction pipe is used for introducing compressed air, the air inlet pressure regulating valve is communicated with the air suction pipe, the air suction pipe is communicated with the air inlet pipe, the air inlet control valve is arranged on the air inlet pipe, and the air inlet control valve is a normally closed valve.
Through above-mentioned technical scheme, the air suction pipe is arranged in guiding compressed air and gets into the compressor that awaits measuring, and the pressure governing valve that admits air is arranged in adjusting the pressure that gets into gas in the compressor to make the gas pressure who gets into in the compressor keep the invariable state, thereby reduce the interference of external factor when detecting.
The invention is further configured to: the air inlet check valve is arranged between the air inlet pressure regulating valve and the air inlet control valve of the air inlet pipe, and the air inlet check valve allows air to flow into the compressor to be tested only from the air inlet pipe.
Through above-mentioned technical scheme, the check valve that admits air has avoided the gas in the compressor to flow towards the direction of intake pipe, the gaseous condition of leaking of avoiding to the operation that the compressor can be stable has been guaranteed.
The invention is further configured to: the pressure-bearing assembly comprises a pressure-bearing air suction pipe, a booster pump and a charge and discharge storage pressure tank which are communicated with the exhaust pipe, the booster pump is communicated with the pressure-bearing air suction pipe, and the charge and discharge storage pressure tank is communicated with the exhaust pipe;
a rapid pressurization tank, a pressurization one-way valve and a pressurization fluid control valve are sequentially arranged between the pressurization pump and the charge-discharge storage pressure tank, the pressurization one-way valve enables gas to flow into the charge-discharge storage pressure tank only from the rapid pressurization tank, and the pressurization fluid control valve is a normally closed valve;
and a pressure-bearing fluid control valve is arranged on the exhaust pipe between the exhaust pressure sensor and the charging and discharging storage pressure tank, and the pressure-bearing fluid control valve is a normally closed valve.
According to the technical scheme, the air suction pipe is used for guiding air to enter the booster pump, the booster pump is used for conveying the air after being boosted to the charge and discharge storage pressure tank, the charge and discharge storage pressure tank is used for storing the air with higher pressure, and the exhaust pipe is used for communicating the charge and discharge storage pressure tank with the exhaust port of the compressor; the pressurized fluid control valve is used for communicating or disconnecting the connection between the charging and discharging storage pressure tank and the rapid pressurization tank, so that the gas pressure in the charging and discharging storage pressure tank can keep an initial set state; the pressurization one-way valve is used for preventing gas in the charging and discharging storage pressure tank from flowing back to the rapid pressurization tank so as to stably inflate and pressurize the charging and discharging storage pressure tank; the pressure-bearing fluid control valve is used for connecting and disconnecting the connection between the exhaust port of the compressor and the charging and discharging pressure storage tank.
The invention is further configured to: the air inlet pipe, the exhaust pipe and the charging and discharging pressure storage tank are communicated with pressure release pipes, the tail ends of the pressure release pipes are communicated with a demister, pressure release fluid control valves are arranged on the pressure release pipes, and the pressure release fluid control valves are normally open valves.
Through above-mentioned technical scheme, the pressure release pipe is used for the atmospheric pressure in the release pipeline when the test is finished, and the defroster is used for getting rid of the vaporific liquid that produces when atmospheric pressure releases, and pressure release fluid control valve is used for controlling closing of the intercommunication of pressure release pipe.
The invention is further configured to: the vibration detection assembly comprises a mounting plate in sliding fit with a support plate, and an X-direction laser sensor, a Y-direction laser sensor and a Z-direction laser sensor which are arranged on the mounting plate, wherein a processor and a display which is in electric signal connection with the processor are arranged on the support plate;
the X-direction laser sensor, the Y-direction laser sensor and the Z-direction laser sensor send detected data to the processor, and the processor converts the data detected by the X-direction laser sensor, the Y-direction laser sensor and the Z-direction laser sensor into oscillograms to be displayed on the display.
Through the technical scheme, the X-direction laser sensor, the Y-direction laser sensor and the Z-direction laser sensor are respectively used for detecting the vibration amplitude of the compressor in the X direction, the Y direction and the Z direction, and the processor is used for converting detected data into the oscillogram so as to display a test result more intuitively.
The invention is further configured to: the supporting frame is provided with a current detection module used for detecting current during working, the current detection module is connected into a circuit supplying power to the compressor, the current detection module is in electric signal connection with the processor, and the processor converts data into a oscillogram to be displayed on the display.
Through the technical scheme, the current detection module is used for detecting the actual current change condition of the compressor during working.
Another object of the present invention is to provide a performance testing method of a compressor, which has an advantage in that a more accurate test result can be obtained.
The invention is further configured to: the performance testing equipment of the compressor is applied for detection;
the method comprises the following steps:
step 4, in the lubrication stage, the motor of the compressor is started, the air inlet pipe and the air outlet pipe are started, the motor of the compressor is instructed to operate for 5 seconds at the expected value of 1100RPM, and if the rotating speed of the motor is less than 1000RPM, the lubrication is judged to be NG; when the rotating speed of the motor is more than 1000RPM and exceeds 5 seconds, judging that the lubrication is OK;
when the pressure measured by the exhaust pressure sensor is more than 0.50MPa and less than 1 second, the exhaust port pressure is determined to be OK, otherwise, NG is determined.
Through the technical scheme, the compressor is instructed to operate at the rotating speeds of 1100RPM and 6000RPM, and the running states of the compressor in different states can be conveniently tested, so that the overall performance of the compressor can be more accurately reflected.
The invention is further configured to: the performance testing device of the compressor is applied for detection, and the following steps are added after the step 7:
9, performing pressure boosting timing, starting timing when the exhaust pressure reaches 0.5MPa, determining the pressure NG of the exhaust port when the pressure exceeds 10 seconds and the pressure of the exhaust port is less than 0.7MPa, and quitting the test; the pressure of the exhaust port reaches 0.7Mpa within 10 seconds, and if the pressure of the exhaust port is determined to be OK, the test is continued;
and 11, displaying the detected vibration test value, comparing the vibration test value with a preset value, and judging as OK when the vibration test value is within the range of the preset value.
Through the technical scheme, the pressure of the exhaust port and the vibration amplitude of the compressor can be detected simultaneously, namely, the stability degree of the compressor during operation is detected while the compression performance of the compressor is detected, the simultaneous detection of various parameters is realized, and the overall performance of the compressor is better reflected.
The invention is further configured to: performing a torque test after the vibration test, adding the following steps after step 11;
if the pressure of the exhaust port starts to be timed after the instruction is sent out, the pressure of the exhaust port reaches 0.9Mpa within 10 seconds, the pressure of the exhaust port is determined to be OK, and a torque test is started; otherwise, the pressure of the exhaust port is NG, and the test is finished;
continuing timing, wherein the pressure of the exhaust port is greater than 0.96Mpa within 10 seconds, ending the torque test, if the torque test result is within a preset range value, determining that the torque test result is OK, otherwise, determining that the torque test result is NG;
the test is ended.
Through the technical scheme, the performance of the compressor in high-speed operation can be well tested.
In conclusion, the invention has the following beneficial effects:
1. the real current of the compressor, the air pressure of the air outlet, the vibration amplitude in a high rotating speed state and the actual rotating speed can be detected simultaneously by one device, so that the overall performance of the compressor can be better detected;
2. the air pressure entering the compressor can be accurately controlled through the air inlet pressure control assembly, so that more real and accurate test data of the compressor can be obtained.
Drawings
FIG. 1 is a schematic structural view of the whole of embodiment 1;
FIG. 2 is a schematic circuit diagram of example 1;
fig. 3 is an enlarged schematic view of a portion a of fig. 1.
Reference numerals: 1. a support plate; 2. testing a bearing plate; 3. a support frame; 4. an inspiration test mechanism; 5. an exhaust testing mechanism; 6. an air inlet pipe; 7. an intake air pressure sensor; 8. an intake pressure control assembly; 9. an exhaust pipe; 10. an exhaust pressure sensor; 11. a pressure-bearing assembly; 12. a vibration detection assembly; 13. an air suction pipe; 14. an intake pressure regulating valve; 15. an air intake control valve; 16. an air inlet check valve; 17. a pressure-bearing air suction pipe; 18. a booster pump; 19. charging and discharging a storage pressure tank; 20. a rapid pressurization tank; 21. a pressure-increasing one-way valve; 22. a pressurized fluid control valve; 23. a pressurized fluid control valve; 24. a pressure releasing pipe; 25. a demister; 26. a pressure-relief fluid control valve; 27. mounting a plate; 28. an X-direction laser sensor; 29. a Y-direction laser sensor; 30. a Z-direction laser sensor; 32. a display.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
referring to fig. 1, a performance testing apparatus for a compressor includes a supporting plate 1 and a testing bearing plate 2 for mounting a compressor to be tested, wherein the testing bearing plate 2 is bolted to the supporting plate 1, and a supporting frame 3 is bolted to the supporting plate 1; an air suction testing mechanism 4 for testing air suction pressure and an exhaust testing mechanism 5 for testing exhaust pressure are detachably connected to the support frame 3.
Referring to fig. 1 and 2, the suction test mechanism 4 includes an intake pipe 6, an intake pressure sensor 7 and an intake pressure control assembly 8, the intake pipe 6 is communicated with an intake port of the compressor, and the intake pressure sensor 7 is communicated with the intake pipe 6; the intake pressure control assembly 8 includes an air intake pipe 13, an intake pressure regulating valve 14, and an intake control valve 15, the intake pressure regulating valve 14 is communicated with the air intake pipe 13, the air intake pipe 13 is communicated with the intake pipe 6, and the air intake pipe 13 is used for communicating with a compressed air pipe.
Referring to fig. 2, the inlet pressure regulating valve 14 is used to control the inlet pressure, so as to ensure that the pressure of the gas sucked by the compressor to be tested is controlled, so that the test result more accurately reflects the actual performance of the compressor; the air inlet control valve 15 is a normally closed valve, and the air inlet control valve 15 is used for opening or closing the air inlet pipe 6 so as to be opened when the compressor to be tested needs to inlet air. The intake pressure sensor 7 is used to detect the pressure at the intake to ensure that the intake pressure can be monitored in real time. An air inlet check valve 16 is arranged between the air inlet control valve 15 and the air inlet pressure regulating valve 14, and the air inlet check valve 16 enables air to only flow from the air suction pipe 13 to the air inlet pipe 6, so that the situation of air backflow is avoided well.
Referring to fig. 2, the exhaust testing mechanism 5 includes an exhaust pipe 9, an exhaust pressure sensor 10 and a pressure-bearing assembly 11, the exhaust pipe 9 is communicated with an exhaust port of the compressor to be tested; a discharge pressure sensor 10 is connected to the discharge pipe 9 for detecting the pressure of the discharge gas in order to monitor the performance of the compressor.
Referring to fig. 2, the pressure-bearing assembly 11 includes a pressure-bearing air suction pipe 17, a booster pump 18, and a charge and discharge pressure tank 19, an air suction port of the booster pump 18 communicates with the pressure-bearing air suction pipe 17, an outlet of the booster pump 18 communicates with the exhaust pipe 9, and the charge and discharge pressure tank 19 communicates with the exhaust pipe 9. A rapid pressurization tank 20, a pressurization one-way valve 21 and a pressurization fluid control valve 22 are sequentially communicated between the pressurization pump 18 and the charge-discharge storage pressure tank 19, and the pressurization one-way valve 21 limits gas to flow from the rapid pressurization tank 20 to the charge-discharge storage pressure tank 19 only. The pressurizing fluid control valve 22 is a normally closed valve and is opened when the charge/discharge storage tank 19 needs to be charged.
Referring to fig. 2, the exhaust pipe 9 is communicated with a pressure-bearing fluid control valve 23, and the pressure-bearing fluid control valve 23 is arranged between the exhaust pressure sensor 10 and the charge-discharge storage pressure tank 19; the pressure fluid control valve 23 is a normally closed valve that is opened when the pressure at the discharge port of the compressor is tested.
Referring to fig. 2, the air inlet pipe 6, the air outlet pipe 9 and the charge and discharge pressure storage tank 19 are all communicated with a pressure release pipe 24, the tail end of the pressure release pipe 24 is communicated with a demister 25, the pressure release pipe 24 is all communicated with a pressure release fluid control valve 26, and when the pressure in the pipeline needs to be released, the pressure release fluid control valve 26 is opened; when testing the compressor, the pressure relief fluid control valve 26 is in a closed state.
Referring to fig. 1 and 3, a vibration detection assembly 12 for detecting vibration amplitude of the compressor during operation is arranged on the support plate 1, the vibration detection assembly 12 includes a mounting plate 27, an X-direction laser sensor 28, a Y-direction laser sensor 29 and a Z-direction laser sensor 30, the mounting plate 27 is L-shaped, and a horizontal section of the mounting plate 27 is matched with the support plate 1 through a slide rail and a slide block; the X-direction laser sensor 28, the Y-direction laser sensor 29 and the Z-direction laser sensor 30 are respectively connected to the vertical section of the mounting plate 27 through bolts, and the laser directions of the X-direction laser sensor 28, the Y-direction laser sensor 29 and the Z-direction laser sensor 30 are respectively towards the X direction, the Y direction and the Z direction. A pushing cylinder is arranged on the supporting plate 1, the cylinder body part of the pushing cylinder is connected with the supporting plate 1 through a bolt, and a piston rod of the pushing cylinder is connected with the mounting plate 27 through a bolt. The pushing cylinder is used for pushing the mounting plate 27 to slide, and moving the X-direction laser sensor 28, the Y-direction laser sensor 29 and the Z-direction laser sensor 30 to the upper part of the compressor to be detected when detecting the vibration frequency spectrum and the vibration magnitude, so that the detection is better carried out; when the vibration frequency spectrum and the vibration magnitude do not need to be detected, the method does not need to be deduced.
Referring to fig. 1 and 3, a processor and a display 32 are bolted on the support plate 1, the processor can be formed by a PLC system, a data processing chip and data processing software, and the display 32 is electrically connected with the processor; the support frame 3 is connected with a current detection module through a bolt, the current detection module is directly connected into a power supply circuit of a compressor to be detected, the current detection module is in electric signal connection with the processor, the current detection module sends a detected real-time current signal of the compressor to a data processing chip in the processor, and the real-time current signal is displayed in a waveform diagram form on the display 32 after being processed by data processing software.
The X-direction laser sensor 28, the Y-direction laser sensor 29 and the Z-direction laser sensor 30 are respectively used for detecting vibration amplitude and vibration frequency of the compressor in the X direction, the Y direction and the Z direction during working, and the X-direction laser sensor 28, the Y-direction laser sensor 29 and the Z-direction laser sensor 30 convert detected data into electric signals and send the electric signals to the processor; the processor converts the detected vibration amplitude and vibration frequency data into a waveform diagram to be displayed on the display 32; meanwhile, comparing the data with a preset offset value, wherein if the data is within a preset value range, the result is OK, and otherwise, the result is NG; and displays the results on display 32.
Example 2: a performance testing method for a compressor comprises the following steps,
referring to fig. 1, 2 and 3, a performance test apparatus of a compressor to which embodiment 1 is applied is for testing, and includes the following steps:
step 4, in the lubrication stage, the motor of the compressor is started, the air inlet pipe 6 and the air outlet pipe 9 are started, the motor of the compressor is instructed to operate for 5 seconds at the expected value of 1100RPM, if the rotating speed of the motor is less than 1000RPM, the lubrication is judged to be NG, and the test is directly finished; when the rotating speed of the motor is more than 1000RPM and exceeds 5 seconds, judging that the lubrication is OK;
when the pressure measured by the exhaust pressure sensor 10 is more than 0.50MPa and less than 1 second, the exhaust port pressure OK is judged; otherwise NG and quitting the test.
In the case of the exhaust port pressure OK and the motor speed OK, the following steps are continued after step 7:
step 9, performing pressure boosting timing, judging the pressure NG of the exhaust port when the exhaust pressure reaches 0.5MPa and exceeds 10 seconds and the pressure of the exhaust port is less than 0.7MPa, and quitting the test; the pressure of the exhaust port reaches 0.7Mpa within 10 seconds, and if the pressure of the exhaust port is determined to be OK, the test is continued;
and 11, displaying the detected vibration test value, comparing the vibration test value with a preset value, and judging as OK when the vibration test value is within the range of the preset value.
Performing a torque test after the vibration test OK, and adding the following steps after the step 11; the torque test can be carried out by adopting a torque tester connected to a main shaft of the motor, and the torque tester is electrically connected with the processor;
if the pressure of the exhaust port starts to be timed after the instruction is sent out, the pressure of the exhaust port reaches 0.9Mpa within 10 seconds, the pressure of the exhaust port is determined to be OK, and a torque test is started; otherwise, the pressure of the exhaust port is NG, and the test is finished;
continuing timing, wherein the pressure of the exhaust port is greater than 0.96Mpa within 10 seconds, ending the torque test, if the torque test result is within a preset range value, determining that the torque test result is OK, otherwise, determining that the torque test result is NG;
the test is ended.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. A performance test device of a compressor comprises a support plate (1) and a test bearing plate (2) for mounting the compressor to be tested;
the device is characterized in that a support frame (3) is arranged on the support plate (1), and an air suction testing mechanism (4) for testing air suction pressure and an exhaust testing mechanism (5) for testing exhaust pressure are arranged on the support frame (3);
the air suction testing mechanism (4) comprises an air inlet pipe (6) communicated with an air inlet of the compressor, an air inlet pressure sensor (7) and an air inlet pressure control assembly (8), wherein the air inlet pressure sensor (7) is communicated with the air inlet pipe (6);
the exhaust testing mechanism (5) comprises an exhaust pipe (9) communicated with an exhaust port of the compressor, an exhaust pressure sensor (10) and a pressure-bearing assembly (11);
and the support frame (3) is provided with a vibration detection assembly (12) for detecting the vibration amplitude of the compressor during working.
2. The performance test equipment of a compressor according to claim 1, wherein the intake pressure control assembly (8) comprises an air suction pipe (13) for introducing compressed air, an intake pressure regulating valve (14), and an intake control valve (15), the intake pressure regulating valve (14) is communicated with the air suction pipe (13), the air suction pipe (13) is communicated with the intake pipe (6), the intake control valve (15) is arranged on the intake pipe (6), and the intake control valve (15) is a normally closed valve.
3. A performance testing apparatus of a compressor according to claim 2, wherein the intake pipe (6) is provided with an intake check valve (16) between the intake pressure regulating valve (14) and the intake control valve (15), the intake check valve (16) allowing gas to flow only from the intake pipe (6) to the compressor under test.
4. The performance test equipment of the compressor is characterized in that the pressure-bearing assembly (11) comprises a pressure-bearing air suction pipe (17), a booster pump (18) and a charge and discharge pressure storage tank (19) which are communicated with the exhaust pipe (9), wherein the booster pump (18) is communicated with the pressure-bearing air suction pipe (17), and the charge and discharge pressure storage tank (19) is communicated with the exhaust pipe (9);
a rapid pressurization tank (20), a pressurization one-way valve (21) and a pressurization fluid control valve (22) are sequentially arranged between the pressurization pump (18) and the charge-discharge storage pressure tank (19), the pressurization one-way valve (21) enables gas to flow into the charge-discharge storage pressure tank (19) only from the rapid pressurization tank (20), and the pressurization fluid control valve (22) is a normally closed valve;
and a pressure-bearing fluid control valve (23) is arranged on the exhaust pipe (9) and between the exhaust pressure sensor (10) and the charging, discharging and storing pressure tank (19), and the pressure-bearing fluid control valve (23) is a normally closed valve.
5. The performance test equipment of the compressor, according to claim 4, characterized in that the air inlet pipe (6), the air outlet pipe (9) and the charge and discharge pressure storage tank (19) are all communicated with a pressure release pipe (24), the tail end of the pressure release pipe (24) is communicated with a demister (25), the pressure release pipe (24) is provided with a pressure release fluid control valve (26), and the pressure release fluid control valve (26) is a normally open valve.
6. The performance test equipment of the compressor is characterized in that the vibration detection assembly (12) comprises a mounting plate (27) which is matched with the support plate (1) in a sliding mode, an X-direction laser sensor (28), a Y-direction laser sensor (29) and a Z-direction laser sensor (30) which are arranged on the mounting plate (27), and a processor and a display (32) which is in electrical signal connection with the processor are arranged on the support plate (1);
the X-direction laser sensor (28), the Y-direction laser sensor (29) and the Z-direction laser sensor (30) send detected data to the processor, and the processor converts the data detected by the X-direction laser sensor (28), the Y-direction laser sensor (29) and the Z-direction laser sensor (30) into waveform diagrams to be displayed on the display (32).
7. The performance test equipment of the compressor as claimed in claim 6, wherein the supporting frame (3) is provided with a current detection module for detecting current during operation, the current detection module is connected to a circuit for supplying power to the compressor, the current detection module is electrically connected with the processor, and the processor converts data into a waveform diagram to be displayed on the display (32).
8. A performance test method of a compressor, characterized in that a performance test apparatus of a compressor according to any one of claims 1 to 6 is applied for detection;
the method comprises the following steps:
step 1, connecting a circuit of a compressor motor to be tested into a detection circuit of test equipment;
step 2, in a standby stage, the air inlet pipe (6) and the air outlet pipe (9) are in a closed state;
step 3, communicating an air inlet of the compressor to be tested with an air inlet pipe (6), and communicating an air outlet with an exhaust pipe (9);
step 4, in the lubrication stage, the motor of the compressor is started, the air inlet pipe (6) and the air outlet pipe (9) are started, the motor of the compressor is instructed to operate for 5 seconds at the expected value of 1100RPM, and if the rotating speed of the motor is less than 1000RPM, the lubrication is judged to be NG; when the rotating speed of the motor is more than 1000RPM and exceeds 5 seconds, judging that the lubrication is OK;
step 5, a boosting stage and a vibration test are carried out, the air inlet pipe (6) and the air outlet pipe (9) are opened, and the pressure bearing assembly (11) is opened;
step 6, in the state of step 5, the motor is instructed to operate at the expected rotating speed of 6000 RPM; if the actual rotating speed is less than 5000RPM and exceeds 3 seconds, judging that the rotating speed of the motor is NG low, and quitting the test;
step 7, when the actual rotating speed of the motor is greater than 5000RPM, judging that the rotating speed of the motor is OK;
when the pressure measured by the exhaust pressure sensor (10) is greater than 0.50MPa and less than 1 second, the exhaust port pressure is determined to be OK, otherwise NG.
9. A performance test method of a compressor according to claim 8,
the performance test device of a compressor according to claim 5 is applied for detection, and the following steps are added after step 7:
step 8, under the condition that the pressure of the exhaust port and the rotating speed of the motor are both OK, continuing to test;
9, performing pressure boosting timing, starting timing when the exhaust pressure reaches 0.5MPa, determining the pressure NG of the exhaust port when the pressure exceeds 10 seconds and the pressure of the exhaust port is less than 0.7MPa, and quitting the test; the pressure of the exhaust port reaches 0.7Mpa within 10 seconds, and if the pressure of the exhaust port is determined to be OK, the test is continued;
step 10, vibration testing, namely continuously testing under the condition of the pressure OK of the exhaust port, judging that the pressure of the exhaust port is OK when the pressure of the exhaust port reaches 0.78Mpa within 10 seconds, and simultaneously detecting by adopting a vibration detection component (12);
and 11, displaying the detected vibration test value, comparing the vibration test value with a preset value, and judging as OK when the vibration test value is within the range of the preset value.
10. A performance test method of a compressor according to claim 9, wherein a torque test is performed after the vibration test, and the following steps are added after step 11;
step 12, instructing the motor to operate at the expected rotating speed of 8000RPM, and judging the motor to be OK if the rotating speed of the motor reaches 7500RPM within 5 seconds after the instruction is sent out; otherwise, the test is NG and quitting;
if the pressure of the exhaust port starts to be timed after the instruction is sent out, the pressure of the exhaust port reaches 0.9Mpa within 10 seconds, the pressure of the exhaust port is determined to be OK, and a torque test is started; otherwise, the pressure of the exhaust port is NG, and the test is finished;
continuing timing, wherein the pressure of the exhaust port is greater than 0.96Mpa within 10 seconds, ending the torque test, if the torque test result is within a preset range value, determining that the torque test result is OK, otherwise, determining that the torque test result is NG;
the test is ended.
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