CN114753996A - Water pump test bench and test method - Google Patents
Water pump test bench and test method Download PDFInfo
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- CN114753996A CN114753996A CN202210491967.9A CN202210491967A CN114753996A CN 114753996 A CN114753996 A CN 114753996A CN 202210491967 A CN202210491967 A CN 202210491967A CN 114753996 A CN114753996 A CN 114753996A
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- 238000010998 test method Methods 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 claims description 179
- 239000012530 fluid Substances 0.000 claims description 96
- 238000001816 cooling Methods 0.000 claims description 77
- 238000010438 heat treatment Methods 0.000 claims description 53
- 230000001105 regulatory effect Effects 0.000 claims description 26
- 239000003507 refrigerant Substances 0.000 claims description 21
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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
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Abstract
The invention belongs to the technical field of testing, and discloses a water pump testing bench and a testing method. The water pump test bench provided by the invention can effectively ensure the accuracy of the test result of the pump to be tested, and can effectively reduce the energy consumption.
Description
Technical Field
The invention relates to the technical field of testing, in particular to a water pump testing bench and a testing method.
Background
At present, new energy automobiles are widely advocated due to the problem of environmental pollution caused by traditional energy automobiles. The demand of new energy automobile parts is increasing day by day, wherein small motor class product, for example water pump, oil pump, urea pump etc. are one of the indispensable power unit of each circulation mechanism, and above-mentioned product all need do the test before putting into operation and detect.
The operating environment temperature and the medium temperature of the product are synchronous or asynchronous between-40 ℃ and 125 ℃, and the operating environment temperature and the medium temperature of some products can reach 130 ℃ or even higher. In the prior art, common test equipment simulates a test temperature at a single temperature to perform a test, and cannot simulate different test temperatures, so that the test of the product has limitation.
Disclosure of Invention
The invention aims to provide a water pump test bench which can adjust the test temperature and effectively ensure the accuracy of the test result of a pump to be tested.
In order to achieve the purpose, the invention adopts the following technical scheme:
provided is a water pump test bench, including:
the medium box is internally filled with medium liquid, and a heating module is arranged in the medium box and can heat the medium liquid;
the two ends of the internal circulation pipeline are communicated with the medium box, and medium liquid can circularly flow between the internal circulation pipeline and the medium box;
the gas circulation cooling module is arranged on the internal circulation pipeline and used for reducing the temperature of the medium liquid;
the liquid circulation cooling module is arranged on the internal circulation pipeline and is used for reducing the temperature of the medium liquid;
and the two ends of the test pipeline are communicated with the medium box, and a pump to be tested can be installed on the test pipeline.
Optionally, the internal circulation line comprises:
the first end of the first main pipeline is communicated with the medium tank, a first circulating pump is installed on the first main pipeline, and the first circulating pump can enable medium liquid to circularly flow between the internal circulating pipeline and the medium tank;
the first end of the second main pipeline is communicated with the medium box;
the first end of the first branch pipeline is communicated with the second end of the first main pipeline, the second end of the first branch pipeline is communicated with the second end of the second main pipeline, and the gas circulating cooling module is arranged on the first branch pipeline;
and the first end of the second branch pipeline is communicated with the second end of the first main pipeline, the second end of the second branch pipeline is communicated with the second end of the second main pipeline, and the liquid circulation cooling module is arranged on the second branch pipeline.
Optionally, the heating module comprises:
at least part of the circulating heating pipe is arranged in the medium box, heat-conducting liquid is arranged in the circulating heating pipe, and a heating element is arranged on the circulating heating pipe and can heat the heat-conducting liquid;
and the second circulating pump is arranged on the circulating heating pipe and can enable the heat-conducting liquid to circularly flow in the circulating heating pipe.
Optionally, the gas circulation cooling module comprises:
the first heat exchanger comprises a first fluid channel and a first medium channel, the first fluid channel is communicated with the internal circulation pipeline, and a refrigerant medium circulates in the first medium channel;
the air inlet of the compressor is communicated with the first end of the first medium channel;
the second heat exchanger comprises a second fluid channel and a second medium channel, the first end of the second fluid channel is communicated with the air outlet of the compressor, the second end of the second fluid channel is communicated with the second end of the first medium channel, and first cooling circulating liquid circulates in the second medium channel;
and the electronic expansion valve is arranged on a pipeline between the second end of the second fluid channel and the second end of the first medium channel.
Optionally, the hydronic module comprises:
the third heat exchanger comprises a third fluid channel and a third medium channel, the third fluid channel is communicated with the internal circulation pipeline, and a second cooling circulation liquid circulates in the third medium channel;
the first electromagnetic valve is arranged on a pipeline between the first end of the third fluid channel and the medium box;
and the second electromagnetic valve is arranged on a pipeline between the second end of the third fluid channel and the medium box.
Optionally, the method further comprises:
the environment box is provided with at least part of the test pipeline, and the medium liquid leaked from the test pipeline can flow into the environment box;
and the environment box and the medium box are communicated with the fluid infusion box, the medium fluid in the environment box can flow into the fluid infusion box, and the fluid infusion box can supplement the medium fluid for the medium box.
Optionally, a third electromagnetic valve, an electromagnetic proportional valve, a flowmeter, a third stop valve, a first pressure sensor, a second pressure sensor and a fourth stop valve are sequentially installed on the test pipeline, and a pump to be tested can be installed between the first pressure sensor and the second pressure sensor.
Optionally, the pressure regulating device further comprises a pressure regulating module, the pressure regulating module is connected with the medium box, and the pressure regulating module can regulate the pressure in the medium box.
Another objective of the present invention is to provide a testing method, which is suitable for the water pump testing bench, and includes the following steps:
s100, installing a pump to be tested;
s200, adjusting the temperature of the medium liquid in the medium box to a low-temperature test temperature or a high-temperature test temperature;
and S300, starting the pump to be tested for testing.
Optionally, the adjusting step of the low-temperature test temperature in S200 includes:
s210, when the temperature of the medium liquid is more than or equal to T, starting the gas circulation cooling module; when the temperature of the medium liquid is less than T, the liquid circulation cooling module is started; wherein the value of T is any value from 50 ℃ to 70 ℃.
Has the advantages that:
according to the water pump test bench and the test method provided by the invention, the temperature of the medium liquid in the medium box is adjusted to the low-temperature test temperature through the gas circulation cooling module and/or the liquid circulation cooling module, or the temperature of the medium liquid in the medium box is adjusted to the high-temperature test temperature through the heating module, so that the temperature of the medium liquid is suitable for the test temperature of the pump to be tested, and the accuracy of the test result of the pump to be tested is effectively ensured. In addition, the gas circulation cooling module and the liquid circulation cooling module are matched to reduce the temperature of the medium liquid, so that the energy consumption can be effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a water pump test bench provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a gas circulation cooling module and a liquid circulation cooling module according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a test line according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the connection of the media tank, the fluid infusion tank and the environmental tank according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of a voltage regulation module according to an embodiment of the present invention
FIG. 6 is a schematic structural diagram of a heating module provided in accordance with an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a test line according to a second embodiment of the present invention;
fig. 8 is a flowchart of a testing method provided in the third embodiment of the present invention.
In the figure:
100. a media box; 110. a first liquid level meter; 120. a seventh stop valve; 130. a temperature sensor;
210. a circulating heating pipe; 220. a heating member; 230. a second circulation pump;
300. an internal circulation line; 310. a first main pipeline; 311. a first circulation pump; 312. a first shut-off valve; 320. a second main pipeline; 321. a second stop valve; 330. a first branch line; 340. a second branch line;
400. a gas circulation cooling module; 410. a first heat exchanger; 411. a first fluid channel; 412. a first medium passage; 420. a compressor; 430. a second heat exchanger; 431. a second fluid passage; 432. a second medium passage; 440. an electronic expansion valve;
500. a liquid circulation cooling module; 510. a third heat exchanger; 511. a third fluid passage; 512. a third medium passage; 520. a first solenoid valve; 530. a second solenoid valve;
600. testing the pipeline; 610. a third electromagnetic valve; 620. an electromagnetic proportional valve; 630. a flow meter; 640. a third stop valve; 650. a first pressure sensor; 660. a second pressure sensor; 670. a fourth stop valve; 680. a pump to be tested; 691. testing the main pipeline; 692. testing branch pipelines; 693. an eleventh stop valve;
700. an environmental chamber; 710. a recovery pipeline; 711. a one-way valve; 712. a fifth stop valve; 720. a liquid level pipeline; 730. a liquid level monitor;
800. a liquid replenishing box; 810. a liquid supplementing pipeline; 820. a liquid supplementing pump; 830. a second level gauge; 840. a fourth solenoid valve; 850. a sixth stop valve; 860. an eighth stop valve;
900. a voltage regulating module; 910. a pressure regulating pipeline; 920. a voltage stabilizing component; 930. a ninth cut-off valve; 940. an exhaust pipe; 950. a tenth stop valve; 960. and (6) a pressure relief valve.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are based on the orientations or positional relationships shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the referenced modules or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.
Example one
Referring to fig. 1, the present embodiment provides a water pump test bench, including a medium tank 100, a heating module, an internal circulation pipeline 300, a gas circulation cooling module 400, a liquid circulation cooling module 500, and a test pipeline 600, medium liquid is held in the medium tank 100, the heating module is installed in the medium tank 100, the heating module can heat the medium liquid, both ends of the internal circulation pipeline 300 are communicated with the medium tank 100, the medium liquid can flow between the internal circulation pipeline 300 and the medium tank 100 in a circulating manner, the gas circulation cooling module 400 and the liquid circulation cooling module 500 are installed on the internal circulation pipeline 300, the gas circulation cooling module 400 and the liquid circulation cooling module 500 are both used for reducing the temperature of the medium liquid, both ends of the test pipeline 600 are both communicated with the medium tank 100, and a pump 680 to be tested can be installed on the test pipeline 600.
In this embodiment, the temperature of the medium liquid in the medium tank 100 is adjusted to the low temperature test temperature by the gas circulation cooling module 400 and/or the liquid circulation cooling module 500, or the temperature of the medium liquid in the medium tank 100 is adjusted to the high temperature test temperature by the heating module, so that the temperature of the medium liquid is suitable for the test temperature of the pump to be tested 680, and the accuracy of the test result of the pump to be tested 680 is effectively ensured. In addition, the gas circulation cooling module 400 and the liquid circulation cooling module 500 are matched to reduce the temperature of the medium liquid, so that the energy consumption can be effectively reduced.
In this embodiment, the water pump test bench further includes a control module (not shown), the heating module, the gas circulation cooling module 400 and the liquid circulation cooling module 500 are all electrically connected to the control module, and the water pump test bench controls the operation of the heating module, the gas circulation cooling module 400 and the liquid circulation cooling module 500 through the control module. Further, the control module is the prior art, and will not be described herein in detail. Further, the control module may be electrically connected to the pump under test 680 to control the start and stop of the pump under test 680.
In this embodiment, referring to fig. 2, the internal circulation pipeline 300 includes a first main pipeline 310, a second main pipeline 320, a first branch pipeline 330 and a second branch pipeline 340, a first end of the first main pipeline 310 is communicated with the medium tank 100, a first circulation pump 311 is installed on the first main pipeline 310, and the first circulation pump 311 enables medium liquid to circulate between the internal circulation pipeline 300 and the medium tank 100; a first end of the second main pipe 320 communicates with the medium tank 100; a first end of the first branch pipeline 330 is communicated with a second end of the first main pipeline 310, a second end of the first branch pipeline 330 is communicated with a second end of the second main pipeline 320, and the gas circulation cooling module 400 is installed on the first branch pipeline 330; a first end of the second branch pipe 340 is communicated with a second end of the first main pipe 310, a second end of the second branch pipe 340 is communicated with a second end of the second main pipe 320, and the liquid circulation cooling module 500 is installed on the second branch pipe 340. Further, the first circulation pump 311 is electrically connected with the control module, and the control module can control the first circulation pump 311 to start and stop. In this embodiment, when the temperature of the medium liquid is high, the water pump test bench adjusts the temperature of the medium liquid in the medium tank 100 through the liquid circulation cooling module 500, and the medium liquid in the first branch pipeline 330 and the medium liquid cooled in the second branch pipeline 340 are mixed and then flow back to the medium tank 100, so that the temperature of the medium liquid is smoothly cooled, and the service life of the medium tank 100 is prevented from being shortened due to an extreme change in the local temperature of the medium tank 100; when the temperature of the medium liquid is lower, the temperature of the medium liquid in the medium box 100 is adjusted by the water pump test bench through the gas circulation cooling module 400, and the medium liquid in the second branch pipeline 340 does not flow, so that the temperature of the medium liquid is reduced, and the energy consumption is effectively reduced.
Further, a first stop valve 312 is installed on the first main pipeline 310, and a second stop valve 321 is installed on the second main pipeline 320. In this embodiment, the first and second stop valves 312 and 321 may be, but are not limited to, manual stop valves, and are not limited to, and the liquid circulation cooling module 500 and the gas circulation cooling module 400 can be disconnected from the media box 100 by closing the first and second stop valves 312 and 321. Specifically, the first cutoff valve 312 is installed between the first circulation pump 311 and the medium tank 100. In the present embodiment, when the gas circulation cooling module 400 and the liquid circulation cooling module 500 need to be serviced, the first and second cutoff valves 312 and 321 are closed to block the communication between the internal circulation line 300 and the medium tank 100.
Further, the medium tank 100 includes an internal circulation liquid outlet and an internal circulation liquid inlet, a first end of the first main pipeline 310 is communicated with the internal circulation liquid outlet, and a first end of the second main pipeline 320 is communicated with the internal circulation liquid inlet. Specifically, the internal circulation liquid outlet is disposed at the bottom of the medium box 100, and the internal circulation liquid inlet is disposed at the top of the medium box 100.
In this embodiment, with continued reference to fig. 2, the gas circulation cooling module 400 includes a first heat exchanger 410, a compressor 420, a second heat exchanger 430 and an electronic expansion valve 440, the compressor 420 and the electronic expansion valve 440 are both electrically connected to a control module, the control module can control the compressor 420 and the electronic expansion valve 440 to operate, the first heat exchanger 410 includes a first fluid passage 411 and a first medium passage 412, the first fluid passage 411 is communicated with the internal circulation pipeline 300, a first end of the first medium passage 412 is communicated with an air inlet of the compressor 420, a refrigerant medium is circulated in the first medium passage 412, the second heat exchanger 430 includes a second fluid passage 431 and a second medium passage 432, a first end of the second fluid passage 431 is communicated with an air outlet of the compressor 420, a second end of the second fluid passage 431 is communicated with a second end of the first medium passage 412, a first cooling circulation liquid is circulated in the second medium passage 432, the electronic expansion valve 440 is installed on a pipe between the second end of the second fluid passage 431 and the second end of the first medium passage 412. Specifically, the first fluid passage 411 is communicated with the first branch pipe 330, and the temperature of the first cooling circulation liquid entering the second medium passage 432 is 7 ℃ to 12 ℃. Further, the first heat exchanger 410, the compressor 420, the second heat exchanger 430 and the electronic expansion valve 440 are all in the prior art, and detailed description thereof is omitted here. In this embodiment, the refrigerant medium flowing out of the first medium passage 412 is in a gas state, the refrigerant medium is further refined by the compressor 420, the refrigerant medium exchanges heat with the first cooling circulation fluid in the second medium passage 432 at the second heat exchanger 430 to reduce the temperature of the refrigerant medium, the refrigerant medium is throttled by the electronic expansion valve 440 to form a liquid refrigerant medium, the liquid refrigerant medium flows back into the first medium passage 412 to exchange heat with the medium fluid in the first fluid passage 411, so as to reduce the temperature of the medium fluid, and the gaseous refrigerant medium formed by heat exchange of the liquid refrigerant medium in the first medium passage 412 flows out of the first medium passage 412 to form a cooling cycle.
In this embodiment, with continued reference to fig. 2, the liquid circulation cooling module 500 includes a third heat exchanger 510, a first solenoid valve 520 and a second solenoid valve 530, the first solenoid valve 520 and the second solenoid valve 530 are both electrically connected to the control module, the control module can control the opening and closing of the first solenoid valve 520 and the second solenoid valve 530, the third heat exchanger 510 includes a third fluid passage 511 and a third medium passage 512, the third fluid passage 511 is communicated with the internal circulation pipeline 300, the third medium passage 512 circulates a second cooling circulation fluid therein, the first solenoid valve 520 is installed on a pipeline between a first end of the third fluid passage 511 and the medium tank 100, and the second solenoid valve 530 is installed on a pipeline between a second end of the third fluid passage 511 and the medium tank 100. Specifically, the third fluid passage 511 is communicated with the second branch line 340, the temperature of the second cooling circulation fluid when entering the third medium passage 512 is 7 ℃ to 12 ℃, and the first electromagnetic valve 520 and the second electromagnetic valve 530 are both installed on the second branch line 340. Further, the third heat exchanger 510 is prior art and will not be described in detail herein. In the present embodiment, when the liquid circulation cooling module 500 operates, the second cooling circulation liquid in the third medium channel 512 exchanges heat with the medium liquid in the third fluid channel 511 to reduce the temperature of the medium liquid.
In this embodiment, referring to fig. 3, a third electromagnetic valve 610, an electromagnetic proportional valve 620, a flow meter 630, a third stop valve 640, a first pressure sensor 650, a second pressure sensor 660, and a fourth stop valve 670 are sequentially installed on the test pipeline 600, a pump to be tested 680 can be installed between the first pressure sensor 650 and the second pressure sensor 660, the third electromagnetic valve 610, the electromagnetic proportional valve 620, the flow meter 630, the first pressure sensor 650, and the second pressure sensor 660 are all electrically connected to the control module, the control module can control the opening and closing of the third electromagnetic valve 610 and the opening of the electromagnetic proportional valve 620, and the control module can receive detection information of the flow meter 630, the first pressure sensor 650, and the second pressure sensor 660. In the present embodiment, the third stop valve 640 and the fourth stop valve 670 may be, but are not limited to, manual stop valves, and are not limited to this, the electromagnetic proportional valve 620 adjusts the flow rate of the medium liquid in the test line 600, the flow meter 630 detects the flow rate in the test line 600, and the first pressure sensor 650 and the second pressure sensor 660 respectively measure the medium liquid pressure at both ends of the pump 680 to be tested. When the pump to be tested 680 is installed, the third stop valve 640 and the fourth stop valve 670 are closed to block the medium liquid in the test line 600 from flowing. When the water pump test bench tests the pump to be tested 680, the third electromagnetic valve 610 is opened, the pump to be tested 680 is started, and the measurement information of the electromagnetic proportional valve 620, the flowmeter 630, the first pressure sensor 650 and the second pressure sensor 660 is recorded.
In this embodiment, with continued reference to fig. 3, the water pump test bench further includes an environmental chamber 700, at least a portion of the test pipeline 600 is disposed in the environmental chamber 700, and the leaked medium liquid in the test pipeline 600 can flow into the environmental chamber 700. Specifically, the pump to be tested 680 is installed in the environment box 700 for testing, and when a pipe joint on the test pipe 600 leaks, or when the pump to be tested 680 is installed and replaced, the leaked medium liquid flows into the environment box 700.
Further, the temperature in the environmental chamber 700 can be adjusted, and the temperature adjustment manner in the environmental chamber 700 is the same as the temperature adjustment manner of the medium liquid in the medium chamber 100, and will not be described in detail herein. Specifically, when the pump 680 to be tested is installed on the test pipeline 600, the pump 680 to be tested is placed in the environment box 700, so that the test environment temperature in the environment box 700 and the temperature of the medium liquid can be changed synchronously, and the test result is more accurate.
Further, referring to fig. 4, the water pump test bench further includes a fluid infusion tank 800, the environment tank 700 and the medium tank 100 are both communicated with the fluid infusion tank 800, the medium fluid in the environment tank 700 can flow into the fluid infusion tank 800, the medium fluid is prevented from polluting the environment, the medium fluid is effectively saved, and the fluid infusion tank 800 can supplement the medium fluid for the medium tank 100. Specifically, in order to facilitate the collection of the medium liquid in the environment tank 700 into the fluid infusion tank 800, the bottom of the environment tank 700 is of a conical structure, and the end of the conical structure of the environment tank 700 is provided with a recovery hole communicated with the fluid infusion tank 800, and preferably, the conical angle is 120-150 °. Further, the recycling pipeline 710, through which the environment tank 700 is communicated with the medium tank 100, is communicated with a liquid level pipeline 720, the recycling pipeline 710, between the recycling hole and the liquid level pipeline 720, is provided with a one-way valve 711, which prevents the medium from flowing back to the environment tank 700, the liquid level pipeline 720 is provided with a liquid level monitor 730, the liquid level monitor 730 can be but is not limited to an infrared monitor, the liquid level monitor 730 is electrically connected with the control module, the recycling pipeline 710, between the liquid supplementing tank 800 and the liquid level pipeline 720, is provided with a fifth stop valve 712, the fifth stop valve 712 can be but is not limited to a manual stop valve, and excessive limitation is not performed. Further, still install the alarm (the alarm is not shown in the figure) on this environment case 700, the alarm is connected with the control module electricity, in this embodiment, the top of fluid infusion case is arranged in to the bottom of environment case, after the liquid level in the liquid level pipeline 720 reachd a take the altitude, trigger liquid level monitor 730, liquid level monitor 730 gives control module with liquid level information transmission, control module can stop the test of this water pump test bench and trigger the alarm and report to the police, the tester opens fifth stop valve 712, the medium liquid in the environment case 700 flows into to fluid infusion case 800 in through recovery pipeline 710, effectively prevent the weeping.
Furthermore, the fluid infusion tank 800 is communicated with the medium tank 100 through a fluid infusion pipeline 810, a fluid infusion pump 820 is installed on the fluid infusion pipeline 810, and the fluid infusion pump 820 can convey the medium fluid in the fluid infusion tank 800 into the medium tank 100. Specifically, the first liquid level meter 110 is installed on the medium tank 100, the first liquid level meter 110 may be, but is not limited to, an electromagnetic liquid level meter, both the first liquid level meter 110 and the fluid infusion pump 820 are electrically connected to the control module, and the control module receives liquid level information of the first liquid level meter 110 to control the fluid infusion pump 820 to infuse fluid into the medium tank 100; install second level gauge 830 on fluid infusion case 800, second level gauge 830 can be but not limited to the electromagnetism level gauge, and second level gauge 830 can detect the liquid level height in fluid infusion case 800, and second level gauge 830 is connected with control module electricity, and when control module received the liquid level height information in the fluid infusion case 800 that second level gauge 830 detected and was crossed lowly, control module can remind operating personnel to add the medium liquid in fluid infusion case 800.
Further, a fourth electromagnetic valve 840 is installed on the fluid infusion pipeline 810 between the fluid infusion pump 820 and the fluid infusion tank 800, the fourth electromagnetic valve 840 is electrically connected with the control module, the control module can control the fourth electromagnetic valve 840 to open and close, a sixth stop valve 850 is installed on the fluid infusion pipeline 810 between the fluid infusion pump 820 and the medium tank 100, and the sixth stop valve 850 may be, but is not limited to, a manual stop valve, and is not limited to a too large number. In this embodiment, when the tester needs to manually replenish the fluid, the tester opens the sixth stop valve 850, the control module controls the fourth electromagnetic valve 840 to open, and the control module controls the fluid replenishing pump 820 to operate according to the fluid level information of the first fluid level meter 110.
In this embodiment, the medium liquid may be, but is not limited to, a mixed liquid prepared by mixing ethylene glycol and pure water in a certain ratio. Preferably, the glycol and the pure water are mixed one by one, and the medium liquid is easy to generate acid substances and corrode metals under the condition of high temperature, so that the medium liquid needs to be replaced and re-prepared in proportion at regular intervals. Further, the bottom of the medium tank 100 and the bottom of the fluid-replenishing tank 800 are both of a tapered structure, and preferably, the taper angle is 120 to 150 degrees. Specifically, the end of the conical structure of the medium box 100 is provided with a first waste discharge pipe, a seventh stop valve 120 is installed on the first waste discharge pipe, and when the medium liquid in the medium box 100 needs to be discharged, the seventh stop valve 120 is opened, and the seventh stop valve 120 may be, but is not limited to, a manual stop valve, and is not limited herein. Further, the end of the conical structure of fluid infusion tank 800 is provided with a second waste discharge pipe, and an eighth stop valve 860 is installed on the second waste discharge pipe, and when the medium fluid in fluid infusion tank 800 needs to be discharged, eighth stop valve 860 is opened, and eighth stop valve 860 may be, but is not limited to, a manual stop valve, and is not limited herein.
Further, a temperature sensor 130 is installed in the medium tank 100, and the temperature sensor 130 is used to detect the temperature of the medium liquid in the medium tank 100. Specifically, the temperature sensor 130 is electrically connected to the control module, and the controller can receive the temperature information of the temperature sensor 130 and control the heating module, the gas circulation cooling module 400 and the liquid circulation cooling module 500 to adjust the temperature of the medium liquid according to the temperature information.
In this embodiment, referring to fig. 5, the water pump test bench further includes a pressure regulating module 900, the pressure regulating module 900 is connected to the medium box 100, and the pressure regulating module 900 can regulate the pressure in the medium box 100. In this embodiment, because the service environment of the automobile and the region of use are different and can lead to the atmospheric pressure difference, influence the performance of medium liquid, for example boiling point and freezing point temperature of medium liquid, in order to test more accurate detection data, can adjust the pressure in medium case 100 through pressure regulating module 900 in order to simulate different atmospheric pressure environment. Specifically, the pressure regulating module 900 includes a pressure regulating pipe 910 and a pressure stabilizing assembly 920 installed on the pressure regulating pipe 910, one end of the pressure regulating pipe 910 is communicated with an external pressure supply device, and the other end is communicated with the medium box 100. Specifically, the top of medium case 100 is provided with the pressure regulating mouth, and pressure regulating pipeline 910 communicates with the pressure regulating mouth, and steady voltage subassembly 920 includes compressed air filter unit and pressure control unit, and compressed air filter unit can filter the impurity in the compressed air, and pressure control unit can adjust and guarantee the pressure stability in medium case 100, and compressed air filter unit and pressure control unit are prior art, do not do detailed description here again. Further, the pressure regulating module 900 is electrically connected to the control module, and the pressure regulating module 900 can be controlled by the control module to regulate the pressure in the medium tank 100.
Further, a ninth cut-off valve 930 is further installed on the pressure regulating pipe 910, the ninth cut-off valve 930 can block the compressed air in the pressure regulating pipe 910 from entering the medium tank 100, and the ninth cut-off valve 930 may be, but is not limited to, a manual cut-off valve, and is not limited herein. Specifically, the ninth cut-off valve 930 is installed on a pipe between the pressure stabilizing assembly 920 and the pressure regulating port.
Further, the top of the medium box 100 is further communicated with an exhaust pipe 940, a tenth stop valve 950 is installed on the exhaust pipe 940, and the tenth stop valve 950 may be, but is not limited to, a manual stop valve, and is not limited herein.
Further, a pressure relief valve 960 is installed at the top of the medium box 100, which can prevent the medium liquid in the medium box 100 from being heated and gasified to form steam pressure, and when the pressure reaches a set protection value, the pressure relief valve 960 is opened to release the pressure until the pressure is reduced below a safety value.
In the embodiment, referring to fig. 6, the heating module includes a circulation heating pipe 210 and a second circulation pump 230, at least a portion of the circulation heating pipe 210 is disposed in the medium tank 100, a heat transfer fluid is disposed in the circulation heating pipe 210, a heating element 220 is mounted on the circulation heating pipe 210, and the heating element 220 can heat the heat transfer fluid; the second circulation pump 230 is installed on the heating pipe, and the second circulation pump 230 enables the heat transfer liquid to circulate in the circulation heating pipe 210. Specifically, the part of the circulating heating pipe 210 placed in the medium box 100 is shaped like a snake to increase the heat exchange area with the medium liquid and accelerate the temperature rise of the medium liquid; a heating tank structure is formed on the circulation heating pipe 210, the heating element 220 is installed in the heating tank, and the heating tank structure effectively increases the contact area between the heating element 220 and the circulation heating pipe 210 to accelerate the heat exchange between the heating element 220 and the heat-conducting liquid; the second circulation pump 230 and the heating tank structure are disposed outside the medium tank 100. Further, the heating element 220 and the second circulation pump 230 are electrically connected to the control module, the controller can control the heating element 220 to work, and the control module can control the first circulation pump 311 to start and stop.
Illustratively, the temperature of the medium liquid in the medium tank 100 is adjusted to the low-temperature test temperature by the gas circulation cooling module 400 and/or the liquid circulation cooling module 500, so that the temperature of the medium liquid is suitable for the test temperature of the pump 680 to be tested.
Specifically, when the temperature of the medium liquid is greater than or equal to T, the liquid circulation cooling module 500 operates, the gas circulation cooling module 400 does not operate, the first circulation pump 311 operates, the first electromagnetic valve 520 and the second electromagnetic valve 530 are both opened, the second cooling circulation liquid in the third medium passage 512 exchanges heat with the medium liquid in the third fluid passage 511 to reduce the temperature of the medium liquid, the medium liquid in the first branch pipeline 330 and the medium liquid in the second branch pipeline 340 cooled by the temperature reduction are mixed and then flow back to the medium tank 100, so that the temperature of the medium liquid is reduced smoothly, and the service life of the medium tank 100 is prevented from being shortened due to over-severe local temperature changes of the medium tank 100. Specifically, the value of T is any value from 50 ℃ to 70 ℃. Preferably, T has a value of 55 ℃, 60 ℃ or 65 ℃.
When the temperature of the medium liquid is less than T, the liquid circulation cooling module 500 does not work, the gas circulation cooling module 400 works, the first circulation pump 311 works, the first electromagnetic valve 520 and the second electromagnetic valve 530 are both closed, the gaseous refrigerant medium is further refined by the compressor 420, then exchanges heat with the first cooling circulation liquid in the second medium passage 432 at the second heat exchanger 430 to reduce the temperature of the refrigerant medium, the refrigerant medium is throttled by the electronic expansion valve 440 to form a liquid refrigerant medium, the liquid refrigerant medium exchanges heat with the medium liquid in the first fluid passage 411 in the first medium passage 412 until the temperature of the medium liquid is suitable for the test temperature of the pump 680 to be tested, the temperature reduction of the medium liquid is effectively accelerated, and the energy consumption is effectively reduced by sectional type temperature reduction.
Example two
The test pipeline 600 in the water pump test bench provided in this embodiment is different from the first embodiment, in this embodiment, as shown in fig. 7, the test pipeline 600 includes a test main pipeline 691 and a plurality of test branch pipelines 692 communicated with the test main pipeline 691, so that the water pump test bench can test pumps to be tested 680 of different models. Specifically, an eleventh stop valve 693 and a flow meter 630 are sequentially installed on the test main pipeline 691, and a third stop valve 640, an electromagnetic proportional valve 620, a first pressure sensor 650, a second pressure sensor 660, a fourth stop valve 670, a first pressure sensor 650, and a second pressure sensor 660 are sequentially installed on each test branch pipeline 692. In this embodiment, the pipe diameters of the branch pipes are different to correspondingly install the pumps to be tested 680 of different models, and the design of the eleventh stop valve 693 facilitates the maintenance and replacement of the flow meter 630. Further, the eleventh stop valve 693 may be, but is not limited to, a manual stop valve, which is not overly limited herein. Further, the test branch piping 692 may be provided with 2 to 8.
Other structures of the water pump test bench provided in this embodiment are the same as those of the first embodiment, and are not described in detail herein.
EXAMPLE III
The test method of the water pump test bench in the first embodiment and the second embodiment can be used, and as shown in fig. 8, the test method includes the following steps:
s100, installing a pump to be tested 680.
Specifically, the pump to be tested 680 is installed between the first pressure sensor 650 and the second pressure sensor 660 with the third stop valve 640 and the fourth stop valve 670 ensured to be closed.
S200, adjusting the temperature of the medium liquid in the medium box 100 to a low-temperature test temperature or a high-temperature test temperature.
Specifically, the step of adjusting the low-temperature test temperature comprises the following steps:
s210, when the temperature of the medium liquid is more than or equal to T, starting the gas circulation cooling module 400; when the temperature of the medium liquid is less than T, the liquid circulation cooling module 500 is started; wherein the value of T is any value from 50 ℃ to 70 ℃. Preferably, T has a value of 55 ℃, 60 ℃ or 65 ℃.
Specifically, the controller receives the temperature information of the temperature sensor 130, when the temperature information is greater than or equal to T, the controller opens the first electromagnetic valve 520 and the second electromagnetic valve 530, the controller starts the first circulating pump 311, the second cooling circulation fluid in the third medium passage 512 exchanges heat with the medium fluid in the third fluid passage 511 to reduce the temperature of the medium fluid, the medium fluid in the first branch pipeline 330 and the medium fluid in the second branch pipeline 340, which is cooled, are mixed and then flow back to the medium tank 100, so that the temperature of the medium fluid is reduced smoothly, and the service life of the medium tank 100 is prevented from being shortened due to an extreme change in the local temperature of the medium tank 100.
When the temperature information is less than T, the controller controls to close the first solenoid valve 520 and the second solenoid valve 530, open the compressor 420 and the electronic expansion valve 440, further refine the gaseous refrigerant medium by the compressor 420, exchange heat with the first cooling circulation liquid in the second medium passage 432 at the position of the second heat exchanger 430 to reduce the temperature of the refrigerant medium, throttle the refrigerant medium by the electronic expansion valve 440 to form a liquid refrigerant medium, and exchange heat with the medium liquid in the first fluid passage 411 in the first medium passage 412 until the temperature of the medium liquid is suitable for the test temperature of the pump 680 to be tested, thereby effectively accelerating the cooling of the medium liquid, and effectively reducing the energy consumption by sectional cooling.
Specifically, the step of adjusting the high temperature test temperature comprises the following steps:
s220, starting a second circulating pump 230 and a second heating element 220;
specifically, the second circulation pump 230 is started by the controller, the second heating element 220 is powered on by the controller to heat the heat conducting liquid, and the second circulation pump 230 can circulate the heated heat conducting liquid in the circulation heating pipe 210 and exchange heat with the medium liquid in the medium tank 100 until the temperature of the medium liquid is suitable for the testing temperature of the pump to be tested 680.
S300, starting the pump to be tested 680 for testing.
Specifically, when the pump under test 680 is tested, the controller records the measurement information of the electromagnetic proportional valve 620, the flow meter 630, the first pressure sensor 650 and the second pressure sensor 660.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A water pump test bench, comprising:
the medium box (100) is used for containing medium liquid in the medium box (100), and a heating module is installed in the medium box (100) and can heat the medium liquid;
the two ends of the internal circulation pipeline (300) are communicated with the medium box (100), and the medium liquid can circularly flow between the internal circulation pipeline (300) and the medium box (100);
a gas circulation cooling module (400), wherein the gas circulation cooling module (400) is installed on the internal circulation pipeline (300), and the gas circulation cooling module (400) is used for reducing the temperature of the medium liquid;
a liquid circulation cooling module (500), wherein the liquid circulation cooling module (500) is installed on the internal circulation pipeline (300), and the liquid circulation cooling module (500) is used for reducing the temperature of the medium liquid;
the test pipeline (600), the both ends of test pipeline (600) all with medium case (100) intercommunication, can install pump (680) to be tested on the test pipeline (600).
2. A water pump test rig according to claim 1, wherein the internal circulation line (300) comprises:
a first main pipeline (310), a first end of the first main pipeline (310) is communicated with the medium tank (100), a first circulating pump (311) is installed on the first main pipeline (310), and the first circulating pump (311) can enable the medium liquid to circularly flow between the inner circulating pipeline (300) and the medium tank (100);
a second main conduit (320), a first end of the second main conduit (320) being in communication with the media tank (100);
a first branch pipeline (330), a first end of the first branch pipeline (330) being communicated with a second end of the first main pipeline (310), a second end of the first branch pipeline (330) being communicated with a second end of the second main pipeline (320), the gas circulation cooling module (400) being mounted on the first branch pipeline (330);
a second branch pipeline (340), a first end of the second branch pipeline (340) being communicated with a second end of the first main pipeline (310), a second end of the second branch pipeline (340) being communicated with a second end of the second main pipeline (320), the hydronic module (500) being installed on the second branch pipeline (340).
3. The water pump test rig of claim 1, wherein the heating module comprises:
the medium box (100) is provided with a circulating heating pipe (210), at least part of the circulating heating pipe (210) is arranged in the medium box (100), heat-conducting liquid is arranged in the circulating heating pipe (210), a heating element (220) is arranged on the circulating heating pipe (210), and the heating element (220) can heat the heat-conducting liquid;
the second circulating pump (230), the second circulating pump (230) is installed on circulating heating pipe (210), second circulating pump (230) can make the heat-conducting liquid circulate in circulating heating pipe (210) and flow.
4. The water pump test rig according to claim 1, wherein the gas circulation cooling module (400) comprises:
a first heat exchanger (410), the first heat exchanger (410) comprising a first fluid passage (411) and a first medium passage (412), the first fluid passage (411) being communicated with the internal circulation pipeline (300), the first medium passage (412) being internally circulated with a refrigerant medium;
a compressor (420), an inlet port of the compressor (420) communicating with a first end of the first medium passage (412);
a second heat exchanger (430), wherein the second heat exchanger (430) comprises a second fluid channel (431) and a second medium channel (432), a first end of the second fluid channel (431) is communicated with the air outlet of the compressor (420), a second end of the second fluid channel (431) is communicated with a second end of the first medium channel (412), and a first cooling circulation liquid circulates in the second medium channel (432);
an electronic expansion valve (440), the electronic expansion valve (440) being installed on a line between a second end of the second fluid passage (431) and a second end of the first medium passage (412).
5. The water pump test rig according to claim 1, wherein the hydronic module (500) comprises:
a third heat exchanger (510), wherein the third heat exchanger (510) comprises a third fluid channel (511) and a third medium channel (512), the third fluid channel (511) is communicated with the internal circulation pipeline (300), and a second cooling circulation liquid circulates in the third medium channel (512);
a first solenoid valve (520), the first solenoid valve (520) being installed on a pipe between a first end of the third fluid passage (511) and the medium tank (100);
a second solenoid valve (530), the second solenoid valve (530) being installed on a line between a second end of the third fluid passage (511) and the medium tank (100).
6. The water pump test rig of claim 1, further comprising:
an environment tank (700), at least part of the test pipeline (600) is arranged in the environment tank (700), and the medium liquid leaked from the test pipeline (600) can flow into the environment tank (700);
the environment box (700) and the medium box (100) are communicated with the liquid supplementing box (800), the medium liquid in the environment box (700) can flow into the liquid supplementing box (800), and the liquid supplementing box (800) can supplement the medium liquid for the medium box (100).
7. The water pump test bench as claimed in claim 1, wherein a third electromagnetic valve (610), an electromagnetic proportional valve (620), a flow meter (630), a third stop valve (640), a first pressure sensor (650), a second pressure sensor (660) and a fourth stop valve (670) are sequentially mounted on the test pipeline (600), and the pump to be tested (680) can be mounted between the first pressure sensor (650) and the second pressure sensor (660).
8. The water pump test bench of claim 1, further comprising a pressure regulating module (900), wherein the pressure regulating module (900) is connected to the media tank (100), and wherein the pressure regulating module (900) is capable of regulating the pressure in the media tank (100).
9. A method of testing using the water pump test rig of any of claims 1-8, comprising the steps of:
s100, installing the pump to be tested (680);
s200, adjusting the temperature of the medium liquid in the medium box (100) to a low-temperature test temperature or a high-temperature test temperature;
s300, starting the pump to be tested (680) for testing.
10. The testing method of claim 9, wherein the adjusting step of the low-temperature testing temperature in S200 comprises:
s210, when the temperature of the medium liquid is more than or equal to T, starting the gas circulation cooling module (400); when the temperature of the medium liquid is less than T, the liquid circulation cooling module (500) is started; wherein the value of T is any value from 50 ℃ to 70 ℃.
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| CN202210491967.9A CN114753996A (en) | 2022-05-07 | 2022-05-07 | Water pump test bench and test method |
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| CN202210491967.9A CN114753996A (en) | 2022-05-07 | 2022-05-07 | Water pump test bench and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116292242A (en) * | 2023-01-13 | 2023-06-23 | 合肥新沪屏蔽泵有限公司 | Water pump accelerated life test system |
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