CN114236380A - Performance test system for motor of variable-frequency refrigeration compressor - Google Patents
Performance test system for motor of variable-frequency refrigeration compressor Download PDFInfo
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- CN114236380A CN114236380A CN202111472575.XA CN202111472575A CN114236380A CN 114236380 A CN114236380 A CN 114236380A CN 202111472575 A CN202111472575 A CN 202111472575A CN 114236380 A CN114236380 A CN 114236380A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 63
- 238000011056 performance test Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 82
- 230000001105 regulatory effect Effects 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000003507 refrigerant Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 claims abstract description 14
- 230000008020 evaporation Effects 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims description 5
- 238000009833 condensation Methods 0.000 abstract description 8
- 230000005494 condensation Effects 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 23
- 238000011084 recovery Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a performance test system for a motor of a variable-frequency refrigeration compressor, which comprises a refrigeration compressor, an exhaust stop valve, an exhaust gas cylinder, a compressor performance test meter, a compressor performance test flow regulating valve, a condensation pressure test meter, a condenser, a drying filter, a refrigerant liquid flow regulating valve, an evaporation pressure test meter, an evaporator, a gas-liquid separator, a compressor air suction flow control regulating valve, an air suction pressure test meter and a gas return stop valve, wherein the refrigeration compressor, the exhaust stop valve, the exhaust gas cylinder, the drying filter, the refrigerant liquid flow control valve, the evaporation pressure test meter, the evaporator, the gas-liquid separator, the compressor air suction flow control regulating valve, the air suction pressure test meter and the gas return stop valve are connected in a circulating loop. The system comprises: the method comprises the steps of testing the highest pressure and different pressures of the refrigeration compressor, testing different condensing temperatures, testing different evaporating temperatures, testing different rotating speeds, testing different pressure differences, and testing the performance parameters of the motor under the circulating operation of different refrigeration working mediums, thereby providing a testing means under various working conditions for the motor of the frequency conversion refrigeration compressor.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a performance test system for a motor of a variable-frequency refrigeration compressor, and belongs to the technical field of performance test of motors of variable-frequency refrigeration compressors.
[ background of the invention ]
The refrigeration compressor is the core and the heart of the refrigeration system and is also the core energy consumption part of the refrigeration system, wherein, the compressor motor is the most direct and effective means for improving the efficiency of the refrigeration compressor and reducing the energy consumption. Along with the increasing severity of the situation of shortage of the energy of the earth, energy-saving work is more and more emphasized in various countries and regions, and meanwhile, higher and higher requirements are put forward on the efficiency of energy-consuming products. The optimal matching of the output of the refrigeration system and the user load by adopting the frequency conversion technology is an effective way for realizing energy conservation, but no effective means for testing the performance of the motor of the frequency conversion refrigeration compressor exists at present.
[ summary of the invention ]
The invention aims to provide a motor performance test system of a variable-frequency refrigeration compressor.
Therefore, the invention provides the following technical scheme:
a motor performance test system of a variable-frequency refrigeration compressor comprises a refrigeration compressor, an exhaust stop valve, an exhaust gas cylinder, a compressor performance test flow regulating valve, a condenser, a drying filter, a refrigerant liquid flow regulating valve, an evaporator, a gas-liquid separator, a compressor air suction flow control regulating valve and an air return stop valve which are connected by a circulation loop, wherein the refrigeration compressor is provided with a high-pressure exhaust outlet end and a low-pressure air return inlet end, and a process valve is connected between the air return stop valve and the low-pressure air return inlet end; a compressor performance test meter is connected on a pipeline between the exhaust gas storage cylinder and the compressor performance test flow regulating valve; a condensing pressure test meter is connected on a pipeline between the compressor performance test flow regulating valve and the condenser; an evaporation pressure test meter is connected on a pipeline between the refrigerant liquid flow regulating valve and the evaporator; a pipeline between the compressor air suction flow control regulating valve and the air return stop valve is connected with an air suction pressure test meter; the high-pressure end of the bypass valve is connected between the exhaust stop valve and the exhaust gas cylinder, and the low-pressure end of the bypass valve is connected between the suction pressure test meter and the return stop valve.
In order to meet the test requirements under different working conditions and ensure the stability of the condensation temperature and the evaporation temperature, the condenser and the evaporator are respectively provided with an air volume adjustable fan.
The working principle of the system experimental test is as follows: high-temperature high-pressure gas compressed by a refrigeration compressor passes through an exhaust stop valve, an exhaust gas storage cylinder, a compressor performance test meter, a compressor performance test flow regulating valve and a condensation pressure test meter, the high-temperature high-pressure refrigerant gas is condensed into high-pressure refrigerant liquid after being cooled by a condenser, the high-temperature high-pressure refrigerant liquid enters the refrigerant liquid flow regulating valve to be decompressed and passes through the evaporation pressure test meter after flowing through a drying filter, the decompressed refrigerant liquid is evaporated and absorbed by an evaporator to be converted into refrigerant gas, the gas passing through a gas-liquid separator passes through the compressor suction flow control regulating valve, the suction pressure test meter and a gas return stop valve in one path, and the refrigerant gas is sucked by the refrigeration compressor to be compressed and discharged again and circulates and reciprocates in a system.
The invention has the following advantages and positive effects:
the system adopting the technical scheme respectively comprises: testing the performance parameters of the motor under the highest pressure and different pressures of the refrigeration compressor; testing the performance parameters of the motor at different condensation temperatures; testing the performance parameters of the motor at different evaporation temperatures; testing the performance parameters of the motor under the operation of different rotating speeds; testing the starting performance parameters of the motor under different pressure difference states; the system provides a test means under various working conditions for the motor of the variable-frequency refrigeration compressor.
[ description of the drawings ]
Fig. 1 is a schematic structural view of the present invention.
[ detailed description ] embodiments
Referring to fig. 1, a performance testing system for a motor of a closed type frequency conversion refrigeration compressor comprises a refrigeration compressor 1, an exhaust stop valve SV1, an exhaust gas storage cylinder 2, a compressor performance testing flow regulating valve 3, a condenser 4, a drying filter 5, a refrigerant liquid flow regulating valve 6, an evaporator 7, a gas-liquid separator 8, a compressor air suction flow control regulating valve 9 and a gas return stop valve SV2 which are connected in a circulation loop, wherein the refrigeration compressor 1 is provided with a high-pressure exhaust outlet end and a low-pressure gas return inlet end, a process valve AV is connected between the gas return stop valve SV2 and the low-pressure gas return inlet end, and the process valve is used for inflating, testing gas leakage, vacuumizing, filling refrigeration working media and replacing refrigeration working media; a pipeline between the exhaust gas storage cylinder 2 and the compressor performance test flow regulating valve 3 is connected with a compressor performance test table TB 1; a condensing pressure test meter TB2 is connected on a pipeline between the compressor performance test flow regulating valve 3 and the condenser 4; an evaporation pressure test meter TB3 is connected on a pipeline between the refrigerant liquid flow regulating valve 6 and the evaporator 7; a pipeline between the compressor air suction flow control regulating valve 9 and the air return stop valve SV2 is connected with an air suction pressure test meter TB 4; the high-pressure end of the bypass valve BV is connected between the exhaust stop valve SV1 and the exhaust gas cartridge 2, and the low-pressure end of the bypass valve BV is connected between the suction pressure test meter TB4 and the return gas stop valve SV 2.
After the exhaust stop valve and the air return stop valve are arranged, the other refrigeration compressor can be efficiently and quickly replaced and installed for a new test by closing the two valves, and the complex workload of performing leakage-checking pressure test, vacuumizing and filling the refrigeration working medium again after the refrigeration compressor is replaced is eliminated; the drying filter 5 absorbs moisture in the refrigerant while filtering impurities.
The condenser 4 and the evaporator 7 are respectively provided with a fan with adjustable air volume.
The performance test system for the motor of the variable-frequency refrigeration compressor is a closed refrigeration system, when preparation work is carried out before a test experiment, firstly, a high-pressure exhaust outlet end of a tested refrigeration compressor 1 is connected with a quick high-pressure connecting joint, and a low-pressure return air inlet end of the refrigeration compressor 1 is connected with a quick low-pressure connecting joint, after connection is completed, the connection part of the tested refrigeration compressor 1 needs to be inflated, tested and subjected to air leakage detection, specifically, nitrogen or dry compressed air is filled into the refrigeration compressor 1 and a connecting pipeline system which are just connected through a process valve AV, and the just inflated gas is exhausted through the process valve AV under the condition of no air leakage through verification; then connecting the vacuum pump with the process valve AV to pump the refrigeration compressor 1 and the connecting pipeline system (if the exhaust stop valve SV1 and the return stop valve SV2 are opened in the first test), exhausting residual gas in the test system, and closing the process valve AV after the system is completely vacuum; and then connecting the refrigeration working medium bottle with the process valve AV, opening the refrigeration working medium bottle valve, after exhausting the air in the liquid feeding pipe, adding a proper amount of refrigeration working medium, and then closing the working medium bottle valve, thereby completing the test working procedure of newly assembling or replacing the refrigeration compressor.
When a first refrigeration compressor to be tested is installed for the first time, the exhaust stop valve SV1 and the return gas stop valve SV2 are opened, and the whole system needs to be subjected to inflation pressure testing, leakage detection, vacuum pumping and refrigeration working medium filling; when another refrigeration compressor to be tested is replaced and the original refrigeration working medium is used, the exhaust stop valve and the air return stop valve are closed, at the moment, the refrigeration compressor 1 and the process valve AV form a loop, and only the loop needs to be inflated, tested, checked for leakage and vacuumized.
The quick high-pressure connecting joint and the quick low-pressure connecting joint are respectively connected with an exhaust stop valve SV1 and an air return stop valve SV2 by connecting pipes, are conventional parts and are not shown; the vacuum pump and the refrigerant bottle (bottled refrigerant) are all conventional commercially available parts and are not shown in the figure.
When testing the performance parameters of the motor of the refrigeration compressor under the highest pressure and different pressures: adjusting the compressor performance test flow regulating valve 3 under the normal operation test condition, observing the compressor performance test table TB1, stopping adjusting the compressor performance test flow regulating valve 3 when the required pressure measurement point is reached, and recording the motor performance parameters in the test state after the test state is stabilized.
When testing the performance parameters of the motor at different condensation temperatures: under the condition of normal operation test, the adjustable fan air volume of the condenser 4 is adjusted, the refrigerant liquid flow regulating valve 6 is adjusted, the condensation pressure test meter TB2 is observed, the required condensation pressure measuring point is reached, the adjustable fan air volume and the flow of the refrigerant liquid flow regulating valve 6 are locked, and after the test state of the test is stabilized, the motor performance parameters of the test state are recorded.
When testing the performance parameters of the motor at different evaporation temperatures: under the condition of a normal operation test, the required condensation temperature according to the requirement of a test working condition is ensured, the refrigerant liquid flow regulating valve 6 is adjusted after stabilization, the evaporation pressure test meter TB3 is observed to reach the evaporation temperature value of the evaporation pressure test meter corresponding to the refrigeration working medium, and the motor performance parameter under the evaporation temperature test state of the test is recorded after stabilization.
When testing the performance parameters of the motor under different rotating speed operation: under the condition of normal operation test, the motor performance parameters under different rotating speeds can be tested and changed, and the motor performance parameters under various different working conditions and different rotating speeds can also be tested.
Testing the starting performance parameters of the motor under different pressure difference states: before the experiment, the pressure of the performance testing system is balanced, the flow regulating valve 3 for the performance testing of the compressor is closed, the refrigeration compressor 1 is started, the compressor performance testing meter TB1 is observed, the suction pressure testing meter TB4 is observed at the same time, the pressure of the high-pressure system is increased, the pressure of the low-pressure system is reduced, the refrigeration compressor is stopped after reaching a certain value, during the experiment of testing the differential pressure, the compressor performance testing meter TB1 and the suction pressure testing meter TB4 are observed, the valve rod of the bypass valve BV is rotated slowly, when the pressures of the compressor performance testing meter TB1 and the suction pressure testing meter TB4 reach the value required by the experiment of testing the differential pressure, the valve rod of the bypass valve BV is closed or stopped, the refrigeration compressor is started, and the starting performance parameters of the motor under the differential pressure state at the moment are recorded.
Testing the performance parameters of the motor under the circulating operation of different refrigeration working media: when testing the performance parameters of different refrigeration working medium motors, connecting the original working medium with a working medium recovery machine (a conventional part is not shown) and a process valve AV by a connecting pipe, starting the working medium recovery machine and opening the process valve AV to recover the original working medium in the system into the working medium recovery machine, stopping the working medium recovery machine after closing the process valve AV and dismantling the working medium recovery machine when the numerical values of all pressure test meters in the system are below 0, then connecting the process valve AV with a vacuum pump, starting the vacuum pump and opening the process valve AV, evacuating the system by the vacuum pump, removing all residual gas in the system, closing the process valve AV when the system is completely vacuum, removing the vacuum pump, and then connecting a refrigeration working medium bottle to be tested, opening a valve of the refrigeration working medium bottle, discharging air in the clean liquid feeding pipe, adding a proper amount of refrigeration working medium, and then closing a valve of the process valve AV to finish the filling of the refrigerant of the working medium. The device can be operated by adopting different refrigeration working mediums in a circulating way, and can test the performance parameters of the motor under the condition of using different refrigeration working mediums in the circulating way.
Claims (2)
1. The utility model provides a frequency conversion compressor motor capability test system which characterized in that: the system comprises a refrigeration compressor, an exhaust stop valve, an exhaust gas cylinder, a compressor performance test flow regulating valve, a condenser, a drying filter, a refrigerant liquid flow regulating valve, an evaporator, a gas-liquid separator, a compressor air suction flow control regulating valve and an air return stop valve which are connected by a circulation loop, wherein the refrigeration compressor is provided with a high-pressure air outlet end and a low-pressure air inlet end, and a process valve is connected between the air return stop valve and the low-pressure air return inlet end; a compressor performance test meter is connected on a pipeline between the air storage cylinder and the compressor performance test flow regulating valve; a condensing pressure test meter is connected on a pipeline between the compressor performance test flow regulating valve and the condenser; an evaporation pressure test meter is connected on a pipeline between the refrigerant liquid flow regulating valve and the evaporator; a pipeline between the compressor air suction flow control regulating valve and the air return stop valve is connected with an air suction pressure test meter; the high-pressure end of the bypass valve is connected between the exhaust stop valve and the air reservoir, and the low-pressure end of the bypass valve is connected between the suction pressure test meter and the return stop valve.
2. The system for testing the performance of the motor of the inverter refrigeration compressor according to claim 1, wherein: the condenser and the evaporator are respectively provided with an air quantity adjustable fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111472575.XA CN114236380B (en) | 2021-11-23 | 2021-11-23 | Variable frequency refrigeration compressor motor performance test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111472575.XA CN114236380B (en) | 2021-11-23 | 2021-11-23 | Variable frequency refrigeration compressor motor performance test system |
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| CN114236380A true CN114236380A (en) | 2022-03-25 |
| CN114236380B CN114236380B (en) | 2024-04-30 |
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| CN202111472575.XA Active CN114236380B (en) | 2021-11-23 | 2021-11-23 | Variable frequency refrigeration compressor motor performance test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118500773A (en) * | 2024-07-08 | 2024-08-16 | 浙江工业大学 | System volume-adjustable refrigeration compressor starting characteristic evaluation device and method |
Citations (6)
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|---|---|---|---|---|
| KR950027858U (en) * | 1994-03-23 | 1995-10-18 | 최창균 | Refrigeration and cooling compressor life test device |
| KR20010026826A (en) * | 1999-09-09 | 2001-04-06 | 김평길 | Performance tester of compressor |
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2021
- 2021-11-23 CN CN202111472575.XA patent/CN114236380B/en active Active
Patent Citations (6)
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|---|---|---|---|---|
| KR950027858U (en) * | 1994-03-23 | 1995-10-18 | 최창균 | Refrigeration and cooling compressor life test device |
| KR20010026826A (en) * | 1999-09-09 | 2001-04-06 | 김평길 | Performance tester of compressor |
| CN2886730Y (en) * | 2006-04-12 | 2007-04-04 | 中南大学 | Steam-compressing refrigerating circulating multifunctional teaching and testing bench with condensational heat recovering device |
| CN1987440A (en) * | 2006-12-19 | 2007-06-27 | 上海理工大学 | Combining method for multiple thermotechnical complex performance detection test |
| CN101271043A (en) * | 2008-05-09 | 2008-09-24 | 合肥通用机械研究院 | Device for testing side performance of air cooler refrigerant for pump feed flow type ammonia refrigerating plant |
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Non-Patent Citations (1)
| Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118500773A (en) * | 2024-07-08 | 2024-08-16 | 浙江工业大学 | System volume-adjustable refrigeration compressor starting characteristic evaluation device and method |
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| CN114236380B (en) | 2024-04-30 |
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