CN112502959A - Compressor testing device and method - Google Patents
Compressor testing device and method Download PDFInfo
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- CN112502959A CN112502959A CN202011405440.7A CN202011405440A CN112502959A CN 112502959 A CN112502959 A CN 112502959A CN 202011405440 A CN202011405440 A CN 202011405440A CN 112502959 A CN112502959 A CN 112502959A
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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 disclosure relates to a compressor testing device and method, and belongs to the technical field of gas compression. The condenser-type air conditioner comprises a compressor, a condenser, an evaporator and a gas-liquid separator which are sequentially connected with one another, and is characterized in that a first three-way valve is arranged between the compressor and the condenser, the gas-liquid separator is connected with the compressor through a second three-way valve, an outlet of the compressor is communicated with a first through hole of the first three-way valve, a second through hole of the first three-way valve is connected with an inlet of the condenser, and the second through hole of the first three-way valve is also connected with an inlet of the evaporator through a first pipeline which can be switched on; the outlet of the gas-liquid separator is communicated with the first through hole of the second three-way valve; and a second through hole of the second tee joint is communicated with an inlet of the compressor, and a third through hole of the first three-way valve is communicated with a third through hole of the second three-way valve through a second pipeline which can be switched on and off.
Description
Technical Field
The disclosure belongs to the technical field of gas compression, and particularly relates to a compressor testing device and method.
Background
The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.
The steam system of defrosting has just begun to promote and use on refrigerating system such as refrigerator, freezer in recent years, box system is generally referred to present test device, adopt the evaporimeter of copper pipe coiling, the condenser, pressure through expansion valve governing system, in order to reach the operating mode of experimental requirement, partial test device increases pressure, temperature sensor, can the relevant parameter of real-time supervision compressor, but this kind of test device can only satisfy simple acceleration, start-stop test, can't change the frost, it can't be verified to steam compressor reliability for the system of defrosting.
Disclosure of Invention
In order to solve the technical problem that exists among the prior art, this disclosure provides a test device, can carry out the steam defrosting, simulate the liquid hammer test, can satisfy conventional acceleration again and start-stop test, increase the maximize that new function realization equipment utilized.
In order to achieve the above purpose, the present disclosure is achieved by the following technical solutions:
the utility model discloses at least one embodiment provides a compressor test device, including compressor, condenser, evaporimeter and vapour and liquid separator that interconnect in proper order, be equipped with first three-way valve between compressor and the condenser, the vapour and liquid separator is connected with the compressor through the second three-way valve, the export of compressor is linked together with the first through-hole of first three-way valve, the second through-hole of first three-way valve is connected with the entry of condenser, the second through-hole of first three-way valve still is connected with the entry of evaporimeter through the first pipeline that can break-make; the outlet of the gas-liquid separator is communicated with the first through hole of the second three-way valve; and a second through hole of the second tee joint is communicated with an inlet of the compressor, and a third through hole of the first three-way valve is communicated with a third through hole of the second three-way valve through a second pipeline which can be switched on and off.
Furthermore, a third pipeline is communicated between a third through hole of the first three-way valve and a third through hole of the second three-way valve, and a throttle valve is arranged on the third pipeline.
Furthermore, a third three-way valve is arranged at the inlet of the evaporator, a first through hole of the third three-way valve is communicated with the first pipeline and the outlet of the condenser, a second through hole of the third three-way valve is communicated with the inlet of the evaporator, a third through hole of the third three-way valve is communicated with the inlet of the gas-liquid separator through a fourth pipeline, the gas-liquid separator is communicated with the first through hole of the second three-way valve through a fifth pipeline and a sixth pipeline, a liquid return electromagnetic valve is arranged on the third pipeline, and a gas return electromagnetic valve is arranged on the fourth pipeline.
Furthermore, the third pipeline and the fourth pipeline are provided with a height difference, and the liquid return electromagnetic valve and the air return electromagnetic valve are interlocked.
Further, a first hand valve, a first pressure sensor and a first temperature sensor for detecting exhaust gas and a first exhaust pressure gauge are sequentially connected between the outlet of the compressor and a first through hole of the first three-way valve; and a second through hole of the second three-way valve and an inlet of the compressor are sequentially connected with a second air suction pressure gauge, a second temperature sensor and a second pressure sensor for detecting exhaust and a second hand valve.
Further, a check valve is arranged between the second hand valve and the inlet of the compressor.
Furthermore, electromagnetic valves for controlling the on-off of the pipelines are arranged on the first pipeline and the second pipeline.
Furthermore, the device also comprises a programmable controller, and the programmable controller is connected with the three-way valve and the electromagnetic valve.
At least one embodiment of the present disclosure provides a testing method of a compressor testing device based on any one of the above, the method including the following processes:
closing the second through hole of the first three-way valve and the first through hole of the second three-way valve, conducting a second pipeline, and performing an opening and closing test on the compressor;
closing third through holes of the first three-way valve and the second three-way valve, closing the first pipeline, and performing a service life test on the compressor;
and closing the third through holes of the first three-way valve and the second three-way valve, conducting the first pipeline, and performing a hot gas defrosting test on the compressor.
And further, third through holes of the first three-way valve and the second three-way valve are closed, the first pipeline and the fourth pipeline are conducted, and a liquid impact test mode test is performed on the compressor by controlling a liquid return electromagnetic valve on the third pipeline and an air return electromagnetic valve on the fourth pipeline.
Compared with the prior art, the utility model has the advantages and positive effects that:
(1) the compressor testing device disclosed by the invention changes the trend of the refrigerant, can realize a hot defrosting test, and can change the verification time and record the test period.
(2) The compressor testing device disclosed by the invention manually sets the opening and closing of each electromagnet by manually adjusting the trend of each three-way valve, and accurately controls time to realize the switching of different functions.
(3) The compressor testing device disclosed by the invention is added with the gas-liquid separator, stores the liquid refrigerant, realizes direct inflow of the liquid refrigerant into the compressor by controlling the opening of the liquid return electromagnetic valve and the gas return electromagnetic valve, and realizes a simulated liquid impact test.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Fig. 1 is an overall structure diagram of a compressor testing device provided in an embodiment of the present disclosure;
FIG. 2 is a block diagram of a compressor start-stop test performed in a testing apparatus provided in an embodiment of the present disclosure;
FIG. 3 is a structural diagram of a life test of a compressor in a testing apparatus provided in an embodiment of the present disclosure;
FIG. 4 is a block diagram of a hot gas defrost mode test performed on a compressor in a test apparatus according to an embodiment of the present disclosure;
fig. 5 is a structural diagram of a liquid impact test mode test performed on a compressor in a test apparatus provided in an embodiment of the present disclosure.
In the figure: 1. the compressor, 2, a first hand valve, 3, a first pressure sensor, 4, a first temperature sensor, 5, a first exhaust pressure gauge, 6, a first three-way valve, 7, a first electromagnetic valve, 8, a condenser, 9, a dry filter, 10, a throttle valve, 11, a second three-way valve, 12, an evaporator, 13, a check valve, 14, a gas-liquid separator, 15, a liquid return electromagnetic valve, 16, a gas return electromagnetic valve, 17, a sight glass, 18, a third three-way valve, 19, a second suction pressure gauge, 20, a second temperature sensor, 21, a second pressure sensor, 22, a second hand valve, 23, a check valve, 24, a second electromagnetic valve, 25, a throttle valve, 26, a first pipeline, 27, a second pipeline, 28, a third pipeline, 29, a fourth pipeline, 30, a fifth pipeline, 31, and a sixth pipeline.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
For convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate description of the disclosure and simplify description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the disclosure.
As shown in fig. 1, the present embodiment provides a compressor testing apparatus, which mainly includes a compressor 1, an exhaust gas detection system, a first three-way valve 6, a condenser 8, a second three-way valve 11, a gas-liquid separator 14, a third three-way valve 18, and a suction gas detection system, which are connected to each other in this order. The first three-way valve 6, the second three-way valve 11 and the third three-way valve 18 are three-way conduction pipes, and only the outlet of each way can be controlled to be conducted and closed.
The export of compressor 1 is linked together through a pipeline and the first through-hole of first three-way valve 6, and exhaust detecting system sets up on the pipeline between the two, exhaust detecting system is including the first hand valve 2, first pressure sensor 3, first temperature sensor 4 and the exhaust manometer 5 that set up each other in proper order.
The second through hole of the first three-way valve 6 is communicated with the inlet of the condenser 8 through a pipeline, the outlet of the condenser 8 is connected with the inlet of the evaporator 12 through a pipeline, and meanwhile, a drying filter 9 and a throttle valve 10 are sequentially connected between the two.
Further, a second three-way valve 11 is further disposed between the outlet of the condenser and the inlet of the evaporator, the outlet of the condenser 8 is communicated with a first through hole of the second three-way valve 11, a second through hole of the second three-way valve 11 is communicated with the inlet of the evaporator 12, the outlet of the evaporator 12 is communicated with the inlet of the gas-liquid separator 14, and a check valve 13 is disposed therebetween for preventing backflow of the liquefied refrigerant. The third through hole of the second three-way valve 11 is also communicated with the inlet of the gas-liquid separator 14 through a second pipe 27.
It should be noted that the second through hole of the first three-way valve is communicated with the first through hole of the second three-way valve through a first pipeline 26, and the first pipeline is provided with a first electromagnetic valve 7 for controlling the on-off of the first pipeline 26.
As shown in fig. 1, in this embodiment, the outlets of the gas-liquid separator are respectively connected to a third pipeline 28 and a fourth pipeline 29, the outlets of the third pipeline 28 and the fourth pipeline 29 are communicated and connected together to a first through hole of a third three-way valve, the outlets of the third pipeline and the fourth pipeline are further connected to a liquid viewing mirror 17, a second through hole of the third three-way valve is communicated with the inlet of the compressor through a pipeline, and an air suction detection system is arranged on the pipeline between the third pipeline and the fourth pipeline, the air suction detection system comprises a second air suction pressure gauge 19, a second temperature sensor 20, a second pressure sensor 21 and a second hand valve 22, and a check valve 23 is further arranged between the second hand valve 22 and the inlet of the compressor.
Further, in this embodiment, the third through holes of the first three-way valve and the third three-way valve are communicated through a fifth pipeline 30, the fifth pipeline is provided with a second electromagnetic valve 24, meanwhile, the fifth pipeline is connected in parallel with a sixth pipeline 31, and the sixth pipeline is provided with a throttle valve 25.
The following will describe in detail the procedure of the test of the compressor in the start/stop, life mode, hot gas defrost mode, and liquid impact test mode based on the above test apparatus.
The experimental device in this embodiment may be provided with a PLC control system, and the PLC programmable controller is respectively connected to the electromagnetic valves and the like in the device, and controls them to realize on/off of the relevant pipelines.
As shown in fig. 2, when the compressor is started and stopped through the testing device, the compressor starts to operate, the second through hole of the first three-way valve is sealed, the second electromagnetic valve is controlled to seal the fifth pipeline, high-temperature and high-pressure gas coming out of the compressor can directly enter the inlet of the compressor through the sixth pipeline to start and stop the experiment, the opening size of the pipeline is realized through the throttle valve, and whether the information such as pressure and temperature meets the working condition requirements or not is observed through the exhaust detection system and the suction detection system.
As shown in figure 3, when the life mode of the compressor is tested by the testing device, the compressor runs, the third through hole of the first three-way valve is closed, the first pipeline is controlled to be closed, so that high-temperature and high-pressure gas flowing out of the compressor directly enters the condenser to be liquefied, then is conveyed to the evaporator through the drying filter 9 and the throttler 10 to be vaporized and absorbed, the final gas-liquid mixture enters the gas-liquid separator to be subjected to gas-liquid separation, the liquid in the gas-liquid separator is sucked into the inlet of the compressor to be pressurized, and therefore the life of the compressor is tested, whether information such as pressure, temperature and the like meets working condition requirements is observed through the exhaust detection system and the suction detection system, and the third pipeline and the fourth pipeline are provided with height difference,
as shown in fig. 4, when the test apparatus is required to perform a hot gas defrosting mode test on a compressor, the compressor starts to operate, which is different from a life test, the conduction of a first pipeline is realized by controlling a first electromagnetic valve, so that high-temperature and high-pressure gas flowing out of the compressor can directly enter an evaporator through the first pipeline, the outer wall of the evaporator is defrosted by the high-temperature and high-pressure gas, and then the high-temperature and high-pressure gas enters a gas-liquid separator to be separated from liquefied refrigerant, so that the hot gas defrosting mode test is realized.
As shown in fig. 5, when the testing apparatus is required to perform a liquid impact test mode test on a compressor, on the basis of a hot gas defrosting mode, a second outlet of a second three-way valve is closed, and a third outlet of the second three-way valve is communicated, so that liquid flowing out of a condenser and gas flowing out of a first pipeline can directly enter a gas-liquid separator 14 for gas-liquid separation, it should be noted that the liquid return electromagnetic valve 15 and the gas return electromagnetic valve 16 are interlocked with each other, and when the liquid return electromagnetic valve 15 is opened and the gas return electromagnetic valve 16 is closed, the gas-liquid separator 14 stores liquid refrigerant; when the liquid return electromagnetic valve 15 is closed and the air return electromagnetic valve 16 is opened, the large-flow liquid refrigerant directly returns to the compressor, and the purpose of liquid impact is achieved. It should be noted that, the on-off periods of the liquid return electromagnetic valve 15 and the gas return electromagnetic valve 16 in this embodiment can be controlled by the PLC, so as to ensure that the gas-liquid separator 14 stores enough refrigerant to meet the requirement of the liquid impact test.
In conclusion, the compressor test device disclosed in the embodiment can realize multiple purposes, can realize four different test schemes such as start-stop test, acceleration test, simulation hot air defrosting test and simulation liquid impact test by controlling different system trends, can perform hot air defrosting and simulation liquid impact test, can meet the requirements of conventional acceleration and start-stop test, increases new functions, can realize the maximization of equipment utilization, and can realize the adjustment and recording of the internal time parameters of the test working conditions through PLC control.
The test device in this embodiment adds a verification function of a special test: the function that can't realize in the present trade has been realized in experimental, the simulation liquid hit of steam defrosting, wherein the realization of liquid hit function, through gas-liquid separation device, simple structure can realize the separation of gas-liquid to through the control of different passageways, realize the deposit and the concentrated discharge of liquid.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. A compressor test device comprises a compressor, a condenser, an evaporator and a gas-liquid separator which are sequentially connected with one another, and is characterized in that a first three-way valve is arranged between the compressor and the condenser, the gas-liquid separator is connected with the compressor through a second three-way valve, an outlet of the compressor is communicated with a first through hole of the first three-way valve, a second through hole of the first three-way valve is connected with an inlet of the condenser, and the second through hole of the first three-way valve is also connected with an inlet of the evaporator through a first pipeline which can be switched on and off; the outlet of the gas-liquid separator is communicated with the first through hole of the second three-way valve; and a second through hole of the second tee joint is communicated with an inlet of the compressor, and a third through hole of the first three-way valve is communicated with a third through hole of the second three-way valve through a second pipeline which can be switched on and off.
2. The testing apparatus for compressor of claim 1, wherein the third through hole of the first three-way valve is connected to the third through hole of the second three-way valve through a third pipeline, and the third pipeline is provided with a throttle valve.
3. The testing apparatus for a compressor according to claim 2, wherein the inlet of the evaporator is provided with a third three-way valve, a first port of the third three-way valve is communicated with the first pipeline and the outlet of the condenser, a second port of the third three-way valve is communicated with the inlet of the evaporator, a third through hole of the third three-way valve is communicated with the inlet of the gas-liquid separator through a fourth pipeline, the gas-liquid separator is communicated with the first through hole of the second three-way valve through a fifth pipeline and a sixth pipeline, the third pipeline is provided with a liquid return solenoid valve, and the fourth pipeline is provided with a gas return solenoid valve.
4. A compressor testing apparatus as claimed in claim 3, wherein the third and fourth conduits are provided with a height differential, and the liquid return solenoid valve and the air return solenoid valve are interlocked.
5. The testing device for the compressor as claimed in claim 1, wherein a first hand valve, a first pressure sensor and a first temperature sensor for detecting exhaust gas, and a first exhaust pressure gauge are connected in sequence between the outlet of the compressor and the first through hole of the first three-way valve; and a second through hole of the second three-way valve and an inlet of the compressor are sequentially connected with a second air suction pressure gauge, a second temperature sensor and a second pressure sensor for detecting exhaust and a second hand valve.
6. A compressor test rig as claimed in claim 5, wherein a check valve is provided between the second hand valve and the inlet of the compressor.
7. The testing device for the compressor as claimed in claim 1, wherein the first pipeline and the second pipeline are provided with electromagnetic valves for controlling the on-off of the pipelines.
8. The compressor testing apparatus of claim 2, further comprising a programmable controller, wherein the programmable controller is connected to the three-way valve and the solenoid valve.
9. A testing method of a compressor testing device based on claim 3, characterized in that:
closing the second through hole of the first three-way valve and the first through hole of the second three-way valve, conducting a second pipeline, and performing an opening and closing test on the compressor;
closing third through holes of the first three-way valve and the second three-way valve, closing the first pipeline, and performing a service life test on the compressor;
and closing the third through holes of the first three-way valve and the second three-way valve, conducting the first pipeline, and performing a hot gas defrosting test on the compressor.
10. The assay of claim 9, wherein: and closing third through holes of the first three-way valve and the second three-way valve, communicating the first pipeline and the fourth pipeline, and performing a liquid impact test mode test on the compressor by controlling a liquid return electromagnetic valve on the third pipeline and a gas return electromagnetic valve on the fourth pipeline.
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| CN202011405440.7A CN112502959B (en) | 2020-12-04 | 2020-12-04 | Compressor testing device and method |
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| CN200972293Y (en) * | 2006-11-15 | 2007-11-07 | 上海金城制冷设备有限公司 | Refrigeration system |
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