CN110887680B - Multifunctional water-cooling testing device and method thereof - Google Patents
Multifunctional water-cooling testing device and method thereof Download PDFInfo
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- CN110887680B CN110887680B CN201811045212.6A CN201811045212A CN110887680B CN 110887680 B CN110887680 B CN 110887680B CN 201811045212 A CN201811045212 A CN 201811045212A CN 110887680 B CN110887680 B CN 110887680B
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- G—PHYSICS
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Abstract
The invention provides a multifunctional water-cooling testing device, which comprises: the test device comprises a water tank, a water pump system, a heater, a cooling system, a liquid inlet interface and a liquid outlet interface, wherein the liquid inlet interface and the liquid outlet interface are used for being connected with a test piece; when the test piece is the liquid-air heat exchanger, the cooling system stops working, and the heater works to provide heat transferred to the liquid-air heat exchanger.
Description
Technical Field
The invention relates to the field of mechanical engineering, in particular to a multifunctional water-cooling testing device and a method for testing performance indexes of a water-cooling radiator and a liquid-air heat exchanger in a water-cooling system.
Background
As power electronic devices increase in power density, cooling of the devices becomes an important issue. Water cooling and liquid air cooling are relatively pure cooling modes of high-power electronic devices. And the longer test time of the water-cooling radiator and the liquid-air heat exchanger causes the longer test period of the power electronic device. And the water-cooled radiator and the liquid-air heat exchanger need to adopt different test platforms, so that the resource consumption is huge, the performance indexes which can be measured by the different test platforms are single, a plurality of indexes cannot be measured simultaneously, the working condition which can be simulated by the test platforms is also single, and the water-cooled radiator and the liquid-air heat exchanger cannot be tested under each working condition of actual operation.
Therefore, the existing test platform has a single test function, can only test the performance of the water-cooling plate or the performance of the heat exchanger, and cannot simultaneously have the integrated function of testing the water-cooling radiator and the plate-fin heat exchanger.
In order to solve the problems, the invention designs a set of testing device capable of testing the water-cooled radiator and the liquid-air heat exchanger in an integrated mode through common and differential analysis of the water-cooled radiator and the liquid-air heat exchanger, and has the advantages of small occupied area, high integration level, complete functions, low cost and the like.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
According to an aspect of the present invention, there is provided a multifunctional water-cooling testing apparatus for testing performance indexes of a water-cooling radiator and a liquid-air heat exchanger in a cooling system, the multifunctional water-cooling testing apparatus comprising: the test device comprises a water tank, a water pump system, a heater, a cooling system, a liquid inlet interface and a liquid outlet interface, wherein the liquid inlet interface and the liquid outlet interface are used for being connected with a test piece; when the test piece is the liquid-air heat exchanger, the cooling system stops working, and the heater works to provide heat transferred to the liquid-air heat exchanger.
Further, when testing with constant temperature during the water-cooled radiator, at the initial stage of testing, cooling system does not work and makes inlet temperature reach preset temperature to reach work is in order to take away with the heat that the water-cooled radiator transmitted to the coolant liquid after preset temperature.
Further, when testing with constant temperature during the water-cooling radiator, at the initial stage of testing, cooling system does not work just heater work is in order to be used for making the inlet temperature reach preset temperature, and reaching when presetting the temperature the heater stop working, and cooling system work is in order to take away the heat that the water-cooling radiator transmitted the coolant liquid.
Furthermore, the cooling system comprises a liquid-air heat exchanger and a fan with adjustable working frequency, and when the temperature of the liquid inlet reaches the preset temperature, the fan adjusts the working frequency to realize water temperature balance.
Furthermore, the cooling system comprises a liquid-liquid heat exchanger with adjustable cooling water amount, and when the temperature of the liquid inlet reaches the preset temperature, the liquid-liquid heat exchanger adjusts the cooling water amount to realize water temperature balance.
Further, when the liquid-air heat exchanger is tested at a constant temperature, the heater works and adjusts the heating power to enable the temperature of the liquid port to reach a preset temperature; when the liquid-air heat exchanger is tested at a constant heat rejection power, the heater operates at the constant heat rejection power to provide heat transferred to the liquid-air heat exchanger.
Further, the water pump system comprises a first water pump and a second water pump which are connected in parallel, the first water pump and the second water pump have different power, the first water pump and the second water pump select to start working in response to different target constant flow rates and adjust working frequency in response to feedback of the flow meter so as to achieve the constant target flow rate.
Furthermore, the multifunctional water-cooling testing device further comprises a bypass pipeline which is connected into the cooling loop through a three-way valve to shunt cooling liquid flowing into the testing piece, and the opening of the three-way valve is adjusted to realize the constant target flow.
Furthermore, the liquid inlet interface and the liquid outlet interface comprise interfaces with different specifications for connecting test pieces with interfaces with different specifications.
Further, an air compressor is further arranged in the cooling loop and used for returning cooling liquid in the test piece to the water tank after the test is finished.
According to one aspect of the invention, a control method of a multifunctional water-cooling test device is provided, which is used for testing performance indexes of a water-cooling radiator and a liquid-air heat exchanger in a cooling system, the multifunctional water-cooling test device comprises a water tank, a water pump system, a heater, a cooling system, and a liquid inlet interface and a liquid outlet interface which are used for connecting a test piece, and the control method comprises the following steps:
step S1, a liquid inlet and a liquid outlet of the test piece can be respectively connected to the liquid inlet interface and the liquid outlet interface so as to be connected with the water tank, the water pump, the heater and the cooling device in series to form a cooling loop, wherein a flow meter is arranged in the cooling loop, and the liquid inlet and the liquid outlet of the test piece are both provided with a temperature sensor and a pressure sensor;
step S2, using the water pump system to provide a constant target flow rate;
and step S31, when the test piece is the water-cooling radiator, starting the cooling system to take away the heat transferred to the cooling liquid by the water-cooling radiator;
or step S32, when the test piece is the liquid-air heat exchanger, the cooling system is deactivated, and the heater is activated to provide heat transferred to the liquid-air heat exchanger.
Further, the step S31 includes: when the water-cooled radiator is tested at a constant temperature, the cooling system is stopped to enable the temperature of the liquid inlet to reach a preset temperature at the initial stage of the test, and the cooling system is started to take away the heat transferred to the cooling liquid by the water-cooled radiator after the preset temperature is reached.
Further, the step S31 further includes: when the water-cooling radiator is tested at a constant temperature, at the initial stage of testing, the cooling system is stopped, the heater is started to enable the temperature of the liquid inlet to reach the preset temperature, the heater is stopped after the preset temperature is reached, and the cooling system is started to take away the heat transferred to the cooling liquid by the water-cooling radiator.
Further, the cooling system includes a liquid-air heat exchanger and a fan with adjustable working frequency, and step S31 further includes: and when the temperature of the liquid inlet reaches the preset temperature, adjusting the working frequency of the fan to realize water temperature balance.
Further, the cooling system includes a liquid-to-liquid heat exchanger with adjustable amount of cooling water, and step S31 further includes: and when the temperature of the liquid inlet reaches the preset temperature, adjusting the cooling water quantity of the liquid-liquid heat exchanger to realize water temperature balance.
Further, the step S32 includes:
s321, when the liquid-air heat exchanger is tested at a constant temperature, adjusting the power of the heater to enable the liquid inlet temperature to reach a preset temperature;
or S322, when the liquid-air heat exchanger is tested at a constant heat dissipation power, controlling the heater to work at the constant heat dissipation power so as to provide heat transferred to the liquid-air heat exchanger.
Further, the water pump system includes a first water pump and a second water pump connected in parallel, the first water pump and the second water pump have different powers, and the step S2 includes: alternatively activating the first and second water pumps in response to different target constant flow rates, and adjusting the operating frequency of the activated water pumps in response to feedback from the flow meter to achieve the constant target flow rate.
Further, the multifunctional water-cooling testing device further includes a bypass pipeline connected to the cooling circuit through a three-way valve to bypass the cooling liquid flowing into the testing piece, and the step S2 includes: starting the water pump system; and adjusting a valve opening of the three-way valve in response to feedback from the flow meter to achieve the constant target flow.
Further, the liquid inlet port and the liquid outlet port include ports of various specifications, and the step S1 includes: and connecting the test piece to the liquid inlet interface and the liquid outlet interface which are matched according to the interface specification of the test piece.
Further, an air compressor is arranged in the cooling circuit and used for returning the cooling liquid in the test piece to the water tank after the test is finished, and the control method further comprises the following steps: and step S4, starting the air compressor to press the cooling liquid in the test piece back to the water tank after the test is finished.
Drawings
The above features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments of the disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.
FIG. 1 is a block diagram of one embodiment according to one aspect of the present invention;
FIG. 2 is a block diagram of another embodiment according to one aspect of the present invention;
FIG. 3 is a block diagram of a module according to yet another embodiment shown in accordance with an aspect of the present invention;
FIG. 4 is a block diagram of a module according to yet another embodiment in accordance with an aspect of the present invention;
FIG. 5 is a flow chart of one embodiment according to another aspect of the present invention.
Drawings
100 multifunctional water-cooling testing device
101 water tank
102 water pump system
1021 first water pump
1022 second water pump
103 heater
104 cooling system
105 liquid inlet interface
106 liquid outlet interface
107 hydraulic press
309 three-way valve
3091A pipeline of three-way valve
3092A conduit for a three-way valve
3093A pipeline of three-way valve
P pressure sensor
Q flow sensor
T temperature sensor
Control method of 500 multifunctional water-cooling testing device
S510 to S550
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be construed as imposing any limitation on the scope of the present invention.
The invention aims to solve the problems of long test period and high test platform specificity of the existing power electronic device, and provides a multifunctional water-cooling test device which can provide various working conditions and can test a water-cooling radiator and a liquid-air heat exchanger.
According to one aspect of the present invention, as shown in fig. 1, there is provided a multifunctional water-cooling testing device 100, which comprises a water tank 101, a water pump system 102, a heater 103, a cooling system 104, and an inlet interface 105 and an outlet interface 106 for connecting a testing piece.
The tank 101 stores a cooling fluid therein, which may flow out through an outlet pipe of the tank 101 and be collected into the tank through an inlet pipe of the tank 101. It can be understood that the invention has certain requirements on the liquid storage amount of the water tank 101, and the specific liquid storage amount can be set according to the heat exchange and heat dissipation power range of the test piece. Further, the water tank 101 may preferably be a water tank that is easy to measure a discharge flow rate and recover the cooling liquid. Preferably, the water tank 101 can be a closed expansion water tank, which stores and adjusts the hot water system by using the compressible gas inside, has the water capacity which contracts or expands along with the temperature change, and easily achieves the purpose of stabilizing and fixing the pressure.
The water pump system 102 is used for conveying the cooling liquid in the water tank and providing a constant target flow, the water pump system 102 has a liquid pumping port and a liquid outlet, the liquid pumping port is connected with an outlet pipe of the water tank 101, and when the water pump system 102 operates, the cooling liquid in the water tank 101 is output and flows out from the liquid outlet. It will be appreciated that the flow rate of the output coolant from the water pump system 102 is related to the operational efficiency of the water pump system 102, and therefore, the facility for facilitating control of the liquid flow rate of the water pump system 102 may be selected. The flow requirement of the water pump system 102 can be set according to the heat exchange and heat dissipation power range of the test piece, and a water pump system with a flow rate 1.1 times of the conventional value of the flow rate of the cooling liquid required by the heat exchange and heat dissipation power of the test piece is generally selected. Preferably, the water pump system 102 may be an electronic water pump system, which is more convenient for precise control.
A liquid inlet of the heater 103 is connected to a liquid outlet of the water pump system 102 for heating the cooling liquid. It is understood that the temperature of the cooling liquid can be controlled by controlling the power of the heater 103. It is understood that the heater 103 may employ a common electric heater.
The liquid inlet end of the liquid inlet interface 105 is connected with the liquid outlet of the heater 103, and the liquid inlet of the test piece is detachably connected with the liquid outlet end of the liquid inlet interface 105. When the cooling liquid with the temperature higher than the internal temperature of the test piece enters the test piece, the cooling liquid can conduct the temperature with the test piece to cool the internal part of the test piece; when the cooling liquid with the temperature lower than the internal temperature of the test piece enters the test piece, the temperature inside the test piece can be raised through temperature conduction.
The liquid inlet end of the liquid outlet port 106 is detachably connected with the liquid outlet of the test piece, and the cooling liquid after temperature conduction with the test piece flows out of the liquid outlet of the test piece and enters the liquid outlet port 106.
The outlet end of the outlet port 106 is connected to one end of a cooling system 104, which is operable to cool the cooling fluid absorbing the temperature of the test piece to a suitable temperature, and the other end of the cooling system is connected to the inlet pipe of the water tank 101 to allow the cooling fluid at a suitable temperature to flow back to the water tank 101.
The water tank 101, the water pump system 102, the heater 103, the test piece connected to the inlet interface 105 and the outlet interface 106, and the cooling system 104 form a complete cooling loop. In order to facilitate the flow, temperature and pressure tests of the cooling circuit, a flow meter Q, a temperature sensor T and a pressure sensor P are arranged in the cooling circuit. Because this multi-functional water-cooling testing arrangement 100 mainly used tests the performance index of testing the piece, consequently, can set up flowmeter Q, temperature sensor T and pressure sensor P in the inlet or the liquid outlet of this testing piece at least. However, it is not reasonable to dispose the flow meter, the temperature sensor and the pressure sensor on the test piece, and the flow meter, the temperature sensor and the pressure sensor need to be continuously disassembled along with different test pieces. It is therefore reasonable to set up flowmeter Q, temperature sensor T and pressure sensor P in the one side of the inlet port or the outlet port that is connected with the inlet or outlet port of the test piece, the benefit of so setting lies in that flowmeter Q, temperature sensor T and pressure sensor P need not constantly dismantle along with the change of test piece.
It will be appreciated that the test piece may include a water-cooled heat sink and a liquid-air heat exchanger. A temperature sensor for detecting the internal temperature of the test piece is arranged in the test piece to acquire the temperature of the test piece.
When the test piece is a water-cooling radiator, the main function of the water-cooling radiator is to radiate heat to a working object, and the water-cooling radiator absorbs the heat of the working object to achieve the purpose of reducing the temperature of the working object, so that the water-cooling radiator actually exists as a heat source in the process of testing the performance index of the water-cooling radiator. The temperature of the coolant in the water tank 101 is continuously raised after passing through the water-cooled radiator, and in order to achieve the purpose of circularly absorbing the heat energy inside the water-cooled radiator, the coolant passing through the water-cooled radiator needs to be cooled so as to take away the heat transferred to the coolant by the water-cooled radiator. Therefore, the cooling system 104 operates when the test piece is a water-cooled heat sink.
When the test piece is a liquid air heat exchanger, the main function of the liquid air heat exchanger is to cool the liquid flowing through by air, so the liquid air heat exchanger actually exists as a cooling source when the performance index of the liquid air heat exchanger is tested. The cooling liquid in the water tank 101 needs to be raised to a certain temperature, so the heater 103 needs to heat the cooling liquid to test the heat dissipation performance of the liquid-air heat exchanger, the temperature of the cooling liquid passing through the liquid-air heat exchanger is continuously lowered, then for the purpose of realizing heat circulation, the cooling system 104 does not need to cool the cooling liquid after being lowered again, and the cooling liquid merged into the water tank 101 can absorb the heat provided by the heater when passing through the heater 104 next time, so as to achieve the purpose of temperature rise. Therefore, when the test piece is a liquid-air heat exchanger, the cooling system 104 is stopped and the heater 103 is operated.
Furthermore, the liquid inlet interface and the liquid outlet interface comprise interfaces with different specifications so as to be convenient for connecting test pieces with interfaces with different specifications. The different specifications can comprise various geometric cross sections, various lengths and various thicknesses of the interfaces.
This multi-functional water-cooling testing arrangement 100 can have multiple test operating mode, like:
1) under the constant flow working condition, namely, the working frequency of the water pump system 102 is adjusted based on the flow value detected by the flowmeter to control the flow of the cooling liquid, and under the constant flow working condition of the cooling liquid, the performance indexes of the test piece are tested by a plurality of temperature sensors and pressure sensors;
2) on the premise of constant flow, the temperature of the cooling liquid of the liquid inlet interface 105 is maintained, namely the working frequency of the water pump system 102 is adjusted based on the flow value detected by the flowmeter to control the flow rate of the cooling liquid, the temperature of the cooling system 104 or the heater 103 is adjusted based on the temperature detected by the temperature sensor of the liquid inlet interface 105, so that the temperature of the cooling liquid of the liquid inlet interface 105 is controlled, and under the conditions of constant flow rate of the cooling liquid and constant temperature, the performance indexes of a test piece are detected through a plurality of temperature sensors and pressure sensors;
3) on the premise of constant flow, the coolant is heated with constant heat dissipation power, that is, the operating frequency of the water pump system 102 is adjusted based on the flow value detected by the flow meter to control the flow rate of the coolant, the coolant flowing through the heater 103 is heated by controlling the heating power of the heater 103, and the performance index of the test piece is detected by a plurality of temperature sensors and pressure sensors under the conditions of constant flow and constant heat dissipation power.
The constant heat dissipation power in the operating condition 3) actually expresses the heating power of the heater, but the cooling liquid is heat dissipated when passing through the test piece after being heated, so the constant heat dissipation power is called by a person skilled in the art.
Under the working condition of constant flow, when the water-cooled radiator is detected, a liquid inlet and a liquid outlet of the water-cooled radiator are respectively connected with one of the liquid inlet interfaces 105 and one of the liquid outlet interfaces 106 in a matching manner, the water pump system 102 and the cooling system 104 are started, the flow detected by the flow meter is obtained, and the working frequency of the water pump system 102 is adjusted based on the relation between the flow and the working frequency of the water pump system 102 so as to achieve the purpose of controlling the flow of the cooling liquid. After the water pump system 102 is started, the cooling liquid is driven to circulate. The cooling liquid absorbs heat in the water-cooled heat sink through the water-cooled heat sink, and dissipates energy absorbed from the water-cooled heat sink through the cooling system 104, thereby achieving heat balance. When the cooling liquid is circulated for many times and the temperature values detected by the temperature sensors are stable, the multifunctional water-cooling testing device 100 is balanced, and the values respectively detected by the flow meters Q, the temperature sensors T and the pressure sensors P at the moment are recorded to serve as the performance indexes of the effective water-cooling radiator, wherein the working temperature difference of the water-cooling radiator can be obtained based on the difference between the temperature value detected by the temperature sensor at the liquid inlet interface 105 and the temperature value detected by the temperature sensor inside the testing piece.
Further, under this constant flow operating mode, when detecting water-cooled radiator, can be above ambient temperature with the coolant temperature control of feed liquor interface 105, will make the performance index of the water-cooled radiator under the record more accurate.
Specifically, the temperature of the coolant at the inlet 105 may be increased by delaying the start of the cooling system, i.e., starting the water pump system 102 at the beginning of the test, and checking the temperature detected by the temperature sensor at the inlet 105, and starting the cooling system when the temperature is higher than the ambient temperature by a certain value.
Under the condition of constant flow and constant temperature, when the water-cooled radiator is tested, a liquid inlet and a liquid outlet of the water-cooled radiator are respectively connected with one of the liquid inlet interfaces 105 and one of the liquid outlet interfaces 106 in a matching manner, the water pump system 102 is started, the cooling system 104 is delayed to be started, the flow detected by the flow meter is obtained, and the working frequency of the water pump system 102 is adjusted based on the relation between the flow and the working frequency of the water pump system 102 so as to achieve the purpose of controlling the flow of the cooling liquid. In the initial stage, after the water pump system 102 is started, the cooling liquid is driven to circulate. The cooling liquid absorbs heat in the water-cooled radiator through the water-cooled radiator, the cooling system 104 does not work, the cooling liquid directly flows through the cooling system 104, is gathered into the water tank 101, and then flows out of the water tank 101, so that the cooling liquid which is not cooled by the cooling system 104 enters the liquid inlet interface 105 again to achieve the purpose of improving the temperature of the cooling liquid at the liquid inlet interface 105. When the temperature detected by the temperature sensor at the liquid inlet interface 105 reaches a preset temperature, the cooling system is started to realize heat balance. And recording the values respectively detected by the plurality of flow meters Q, the temperature sensor T and the pressure sensor P after heat balance to serve as the performance index of the effective water-cooled radiator, wherein the working temperature difference of the water-cooled radiator can be obtained based on the difference between the temperature value detected by the temperature sensor at the liquid inlet interface 105 and the temperature value detected by the temperature sensor in the detected water-cooled radiator.
More quickly, the temperature of the coolant at the inlet 105 can be raised by delaying the start of the cooling system and starting the heater 103 briefly, that is, at the initial stage of the test, the water pump system 102 and the heater 103 are started, the cooling system is not started for a while, the heater 103 heats the coolant and then flows through the inlet 105, the temperature value detected by the temperature sensor at the inlet 105 is checked, and when the temperature value reaches the preset temperature, the heater 103 is turned off and the cooling system 104 is turned on.
Under the working condition of constant flow and constant temperature, when a liquid heat exchanger, specifically a plate-fin heat exchanger, is detected, a liquid inlet and a liquid outlet of the plate-fin heat exchanger are respectively connected to one of the liquid inlet interfaces 105 and one of the liquid outlet interfaces 106 in a matching manner, and the water pump system 102 and the heater 103 are started. The flow detected by the flow meter is obtained, and the working frequency of the water pump system 102 is adjusted based on the relationship between the flow and the working frequency of the water pump system 102 to achieve the purpose of controlling the flow of the cooling liquid. The temperature detected by the temperature sensor at the inlet interface 105 is obtained and the power of the heater 103 is adjusted to control the temperature of the cooling fluid at the inlet interface 105. After the water pump system 102 is started, the cooling liquid is driven to circulate. The heated coolant is subjected to heat dissipation by the plate-fin heat exchanger and then flows into the water tank 101, so that heat balance is realized. When the cooling liquid is circulated for many times and the temperature values detected by the temperature sensors are stable, the multifunctional water-cooling testing device 100 is balanced, and the values respectively detected by the flow meters Q, the temperature sensors T and the pressure sensors P at the moment are recorded to serve as effective performance indexes of the plate-fin heat exchanger, wherein the working temperature difference of the plate-fin heat exchanger can be obtained based on the difference between the temperature value detected by the temperature sensor at the liquid inlet interface 105 and the temperature value detected by the temperature sensor in the air inside the plate-fin heat exchanger.
Under the working condition of constant flow and constant heat dissipation power, when the liquid-air heat exchanger is tested, a liquid inlet and a liquid outlet of the liquid-air heat exchanger are respectively connected to one of the liquid inlet interfaces 105 and one of the liquid outlet interfaces 106 in a matching manner, and the water pump system 102 and the heater 103 are started. The flow detected by the flow meter is obtained, and the working frequency of the water pump system 102 is adjusted based on the relationship between the flow and the working frequency of the water pump system 102 to achieve the purpose of controlling the flow of the cooling liquid. The heater 103 operates at a preset constant heat dissipation power, which may be set based on the heat dissipation power of the liquid-air exchanger desired to be tested. After the water pump system 102 is started, the cooling liquid is driven to circulate. The heated coolant is subjected to heat dissipation by the liquid-air heat exchanger and then is converged into the water tank 101, so that heat balance is realized. When the cooling liquid is circulated for many times and the temperature values detected by the temperature sensors are stable, the multifunctional water-cooling testing device 100 is balanced, and the values respectively detected by the flow meters Q, the temperature sensors T and the pressure sensors P at the moment are recorded to serve as the performance indexes of the effective liquid-air heat exchanger, wherein the working temperature difference of the liquid-air heat exchanger can be obtained based on the difference between the temperature value detected by the temperature sensor at the liquid inlet interface 105 and the temperature value detected by the temperature sensor in the air inside the liquid-air heat exchanger to be tested.
It is understood that the above constant flow, constant temperature, and constant heat dissipation power can be set to different values and in different combinations.
Further, this multi-functional water-cooling testing arrangement still includes air compressor machine 107 for after the test with the cooling hydraulic pressure return water tank 101 in the test piece.
Further, in yet another embodiment, as shown in fig. 2, the cooling system 104 may include a liquid-to-air heat exchanger 1041 and a frequency tunable fan. Under the condition of constant flow and constant temperature, when the water-cooled radiator is tested, when the temperature of the liquid inlet reaches the preset temperature, the water temperature balance can be realized by adjusting the working frequency of the fan in the liquid-air heat exchanger 1041. Multiple liquid-to-air heat exchangers and multiple frequency-tunable fans may be included in the cooling system 104 to increase the cooling efficiency of the cooling system 104.
Further, as shown in fig. 2, the cooling system 104 may include a liquid-to-liquid heat exchanger 1042, wherein the amount of water in the liquid-to-liquid heat exchanger 1042 is adjustable, so that when the temperature of the liquid inlet reaches a preset temperature during a test of the water-cooled heat sink under a constant flow rate and a constant temperature, the water temperature can be balanced by adjusting the amount of water in the liquid-to-liquid heat exchanger.
It is understood that the liquid-air heat exchanger and the liquid-liquid heat exchanger in fig. 2 may exist separately or simultaneously.
Further, as shown in fig. 2, the water pump system 102 may include a first water pump 1021 and a second water pump 1022 connected in parallel, and one of the first water pump 1021 and the second water pump 1022 is selected to be turned on or turned on simultaneously to achieve different coolant flow rates based on a constant flow rate index under different operating conditions.
Further, as shown in fig. 3 and 4, the cooling circuit may include a three-way valve 309, one of the pipes 3091 of the three-way valve 309 is connected to the water pumping system 302, one of the pipes 3092 is connected to the inlet of the heater 303, one of the pipes 3093 is connected to one end of a bypass pipe, and the other end of the bypass pipe is connected to the inlet or the outlet of the cooling system 104. When the flow rate of the coolant driven by the water pump system 102 is greater than the preset constant flow rate, the three-way valve 109 may be adjusted to allow a portion of the coolant to flow back to the water tank 101 through the bypass pipe, so as to control the flow rate of the coolant in the cooling circuit.
It will be appreciated that the three-way valve 309 is adapted to regulating the flow of coolant in the cooling circuit, wherein the water pump system itself is also adapted to regulating the flow of coolant in the cooling circuit. Therefore, the water pump system can exist independently, and the flow of the cooling liquid in the cooling loop is adjusted simply by adjusting the working frequency of the water pump system. A water pump system may also be present in combination with the three-way valve 309, which water pump system operates at a fixed operating frequency, the flow of coolant in the cooling circuit being regulated by the three-way valve 309.
It can be understood that the number and the positions of the flow meters Q, the temperature sensors T and the pressure sensors P in fig. 1 to 4 are exemplary illustrations, and it is feasible that the flow meters Q are disposed at any position in the cooling circuit in practice, and it is reasonable to dispose the flow meters at the liquid inlet and the liquid outlet because the temperature sensors T and the pressure sensors P are used for measuring the performance indexes of the test piece, and it is better to dispose the flow meters at the liquid inlet and the liquid outlet because the pressure sensors P are also used for measuring the hydraulic pressure of the cooling liquid. However, the specific number and position of the arrangement are not limited by the attached drawings.
Preferably, the multifunctional water-cooling testing apparatus 100 may further include a control panel, which may be coupled to each of the controllable components and the detecting components in the cooling circuit, for controlling the components and visually displaying the operation indexes of the components on the control panel, so as to facilitate manual control.
According to an aspect of the present invention, there is provided a control method for a multifunctional water-cooling testing apparatus, configured to test performance indexes of a water-cooling radiator and a liquid-air heat exchanger in a cooling system, where the multifunctional water-cooling testing apparatus includes a water tank, a water pump system, a heater, a cooling system, and a liquid inlet and a liquid outlet for connecting a test piece, and the control method 500 includes:
step S510, a liquid inlet and a liquid outlet of a test piece can be respectively connected to the liquid inlet interface and the liquid outlet interface so as to be connected with the water tank, the water pump, the heater and the cooling device in series to form a cooling loop, wherein a flow meter is arranged in the cooling loop, and the liquid inlet and the liquid outlet of the test piece are respectively provided with a temperature sensor and a pressure sensor;
step S520, using the water pump system to provide a constant target flow rate;
and step S530, executed when the test piece is the water-cooled heat sink: activating cooling systems to remove heat transferred to the cooling fluid from the water-cooled radiator, or
Step S540 performed when the test piece is a liquid-air heat exchanger: the cooling system is deactivated and the heater is activated to provide heat transfer to the liquid-to-air heat exchanger.
In step 520, the water pump system may adjust the operating frequency based on the sensed value of the flow meter to control the generated flow rate to achieve the target flow rate.
It can be understood that, in step S530, since the water-cooled heat sink exists as a heat source in the cooling system, the cooling system is required to dissipate heat of the cooling liquid passing through the water-cooled heat sink to remove heat therefrom, so as to complete heat balance of the cooling circuit.
It can be understood that, in step S540, since the liquid air heat exchanger exists as a heat sink, the cooling liquid cooled by the liquid air heat exchanger no longer needs to be cooled by the cooling system.
When the water-cooled heat sink is tested at a constant temperature based on a constant flow rate, the step S530 further includes:
s531: the cooling system is started in a delayed mode, namely at the initial stage of testing, only the water pump system is started to not start the cooling system, then the cooling liquid passing through the water-cooled radiator is converged into the water tank at a high temperature, the temperature of the cooling liquid at the liquid inlet interface is increased, and when the temperature at the liquid inlet interface reaches a preset temperature, the cooling system is started to cool the cooling liquid.
It will be appreciated that the temperature at the inlet interface may be measured by a temperature sensor.
Alternatively, this step S531 may be replaced with S532: the cooling system is started in a delayed mode, the heater is started, namely, at the initial testing stage, the water pump system and the heater are started but the cooling system is not started, the heated cooling liquid flows through the water-cooling radiator to absorb heat and is converged into the water tank at a high temperature, so that the temperature of the cooling liquid at the liquid inlet interface is rapidly increased, and when the temperature at the liquid inlet interface reaches the preset temperature, the heater is closed and the cooling system is started to cool the cooling liquid.
When the cooling system includes a liquid-air heat exchanger, the step S530 further includes:
s533: and when the temperature of the liquid inlet reaches a preset temperature, namely the constant temperature, the working frequency of a fan in the liquid-air heat exchanger is adjusted to realize water temperature balance.
When the cooling system includes a liquid-to-liquid heat exchanger, the step S533 may be replaced with:
and when the temperature of the liquid inlet reaches a preset temperature, namely the constant temperature, the cooling water quantity of the liquid-liquid heat exchanger is adjusted to realize water temperature balance.
When the liquid-air heat exchanger is tested at a constant temperature on the basis of the constant flow rate, the step S540 further includes:
s541: the power of the heater is adjusted to make the temperature at the liquid inlet interface reach the preset temperature, namely the constant temperature.
It will be appreciated that the power adjustment of the heater is based on the temperature value detected by the temperature sensor at the inlet interface.
When the liquid-air heat exchanger is tested at a constant heat dissipation power on the basis of the constant flow rate, the step S540 further includes:
s542: the heater is controlled to heat the coolant at a constant heat removal power to provide the heat that the liquid-air heat exchanger needs to remove for operation.
Further, the liquid inlet interface and the liquid outlet interface have different specifications, and step S510 includes:
s511: and connecting the test piece to the liquid inlet interface and the liquid outlet interface which are matched according to the interface specification of the test piece.
Further, the water pump system may include a first water pump and a second water pump connected in parallel, the first water pump and the second water pump having different powers to meet different flow demands. Step S520 may include:
s521: alternatively activating the first and second water pumps in response to different target constant flow rates, and adjusting the operating frequency of the activated water pumps in response to feedback from the flow meter to provide the constant target flow rate.
Further, the multifunctional water-cooling testing apparatus includes a bypass pipeline connected to the cooling circuit through a three-way valve to bypass the cooling fluid flowing into the testing piece, and the step S520 may include:
s522: and starting the water pump system and responding to the feedback of the flowmeter to adjust the valve opening of the three-way valve so as to realize the constant target flow.
It is understood that steps S521, S522 may exist separately or simultaneously.
Further, an air compressor is further arranged in the cooling circuit and used for returning the cooling liquid in the test piece to the water tank after the test is finished, and the control method 500 further comprises the following steps:
s550: and starting the air compressor after the test is finished so as to return the cooling liquid in the test piece to the water tank.
While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood by one skilled in the art.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (16)
1. The utility model provides a multi-functional water-cooling testing arrangement for the performance index of water-cooling radiator and liquid-air heat exchanger in the test water cooling system, multi-functional water-cooling testing arrangement includes:
water tank, water pump system, heater, cooling system and be used for connecting the feed liquor interface and the play liquid interface of test piece, the inlet and the liquid outlet of test piece can detachably be connected to respectively feed liquor interface and play liquid interface, with the water tank the water pump the heater with cooling device establishes ties and forms cooling circuit, be equipped with the flowmeter in the cooling circuit and the inlet and the liquid outlet of test piece all are equipped with temperature sensor and pressure sensor, water pump system is used for providing invariable target flow, wherein
When the test piece is the water-cooling radiator, the cooling system works to take away heat transferred to cooling liquid by the water-cooling radiator, and the performance index of the tested water-cooling radiator comprises the difference between a detection temperature value at the liquid inlet and a detection temperature value inside the water-cooling radiator and the pressure difference between the liquid inlet and the liquid outlet of the water-cooling radiator;
when the test piece is the liquid-air heat exchanger, the cooling system stops working, the heater works to provide heat transferred to the liquid-air heat exchanger, the tested performance index of the liquid-air heat exchanger comprises the difference between the detection temperature value of the liquid inlet and the detection temperature value of the liquid outlet and the pressure difference between the liquid inlet and the liquid outlet of the liquid-air heat exchanger,
the cooling system comprises a liquid-air heat exchanger, a fan with adjustable working frequency and a liquid-liquid heat exchanger with adjustable cooling water amount, wherein when the temperature of the liquid inlet reaches a preset temperature, the fan adjusts the working frequency and/or the liquid-liquid heat exchanger adjusts the cooling water amount to realize water temperature balance.
2. The multifunctional water-cooling testing device as claimed in claim 1, wherein when the water-cooling heat sink is tested at a constant temperature, the cooling system does not operate to make the temperature of the liquid inlet reach the preset temperature in the initial stage of the test, and operates to take away the heat transferred from the water-cooling heat sink to the cooling liquid after the preset temperature is reached.
3. The multifunctional water-cooling test device of claim 2, wherein when the water-cooling heat sink is tested at a constant temperature, at a test start stage, the cooling system is not operated and the heater is operated for making the temperature of the liquid inlet reach the preset temperature, and when the preset temperature is reached, the heater is stopped, and the cooling system is operated for taking away the heat transferred to the cooling liquid by the water-cooling heat sink.
4. The multifunctional water-cooling test device as claimed in claim 1, wherein when the liquid-air heat exchanger is tested at a constant temperature, the heater is operated and the heating power is adjusted to make the temperature of the liquid inlet reach a preset temperature,
when the liquid-air heat exchanger is tested at a constant heat rejection power, the heater operates at the constant heat rejection power to provide heat transferred to the liquid-air heat exchanger.
5. The multifunctional water cooling test device according to claim 1, wherein the water pump system comprises a first water pump and a second water pump connected in parallel, the first water pump and the second water pump have different powers, the first water pump and the second water pump alternatively start to work in response to different target constant flow rates and adjust working frequency in response to feedback of the flow meter to achieve the constant target flow rate.
6. The multifunctional water-cooling test device of claim 1, further comprising a bypass pipe connected to the cooling circuit through a three-way valve to bypass the cooling fluid flowing into the test piece, the three-way valve adjusting a valve opening to achieve the constant target flow rate.
7. The multifunctional water-cooling testing device as recited in claim 1, wherein the inlet port and the outlet port comprise a plurality of different interface specifications for connecting testing pieces with different interface specifications.
8. The multifunctional water-cooling testing device as claimed in claim 1, wherein an air compressor is further arranged in the cooling loop for pressing the cooling liquid in the testing piece back to the water tank after the test is finished.
9. A control method of a multifunctional water-cooling test device is used for testing performance indexes of a water-cooling radiator and a liquid-air heat exchanger in a water-cooling system, the multifunctional water-cooling test device comprises a water tank, a water pump system, a heater, a cooling system, and a liquid inlet interface and a liquid outlet interface which are used for connecting a test piece, and the control method comprises the following steps:
step S1, a liquid inlet and a liquid outlet of the test piece can be respectively connected to the liquid inlet interface and the liquid outlet interface so as to be connected with the water tank, the water pump, the heater and the cooling device in series to form a cooling loop, wherein a flow meter is arranged in the cooling loop, and the liquid inlet and the liquid outlet of the test piece are both provided with a temperature sensor and a pressure sensor;
step S2, using the water pump system to provide a constant target flow rate; and
step S31, when the test piece is the water-cooling radiator, start the cooling system in order to take away the heat that the water-cooling radiator transmitted the coolant liquid, the performance index of the water-cooling radiator who tests includes the difference between the detection temperature value at the inlet and the detection temperature value inside the water-cooling radiator, and the water-cooling radiator the pressure differential between inlet and the outlet, or
Step S32, when the test piece is the liquid-air heat exchanger, the cooling system is stopped, the heater is started to provide the heat transferred to the liquid-air heat exchanger, the tested performance index of the liquid-air heat exchanger comprises the difference between the detected temperature value of the liquid inlet and the detected temperature value of the liquid outlet, and the pressure difference between the liquid inlet and the liquid outlet of the liquid-air heat exchanger,
the cooling system includes a liquid-air heat exchanger, a fan with adjustable working frequency and a liquid-liquid heat exchanger with adjustable cooling water amount, and the step S31 further includes:
and when the temperature of the liquid inlet reaches a preset temperature, adjusting the working frequency of the fan and/or adjusting the cooling water quantity of the liquid-liquid heat exchanger to realize water temperature balance.
10. The control method according to claim 9, wherein the step S31 includes:
when the water-cooled radiator is tested at a constant temperature, the cooling system is stopped to enable the temperature of the liquid inlet to reach the preset temperature at the initial testing stage, and the cooling system is started to take away the heat transferred to the cooling liquid by the water-cooled radiator after the preset temperature is reached.
11. The control method according to claim 10, wherein the step S31 further includes:
when the water-cooling radiator is tested at a constant temperature, at the initial stage of testing, the cooling system is stopped, the heater is started to enable the temperature of the liquid inlet to reach the preset temperature, the heater is stopped after the preset temperature is reached, and the cooling system is started to take away the heat transferred to the cooling liquid by the water-cooling radiator.
12. The control method according to claim 9, wherein the step S32 includes:
s321, when the liquid-air heat exchanger is tested at a constant temperature, adjusting the power of the heater to enable the liquid inlet temperature to reach a preset temperature, or
S322, when the liquid-air heat exchanger is tested at a constant heat dissipation power, controlling the heater to work at the constant heat dissipation power so as to provide heat transferred to the liquid-air heat exchanger.
13. The control method according to claim 9, wherein the water pump system includes a first water pump and a second water pump connected in parallel, the first water pump and the second water pump having different powers, and the step S2 includes:
alternatively activating the first and second water pumps in response to different target constant flow rates, and adjusting the operating frequency of the activated water pumps in response to feedback from the flow meter to achieve the constant target flow rate.
14. The method as set forth in claim 9, wherein the multifunctional water-cooling test device further comprises a bypass pipe connected to the cooling circuit through a three-way valve to bypass the flow of the cooling fluid flowing into the test piece, and the step S2 comprises:
starting the water pump system; and
adjusting a valve opening of the three-way valve in response to feedback from a flow meter to achieve the constant target flow.
15. The control method according to claim 9, wherein the inlet port and the outlet port include ports of different specifications, and the step S1 includes:
and connecting the test piece to the liquid inlet interface and the liquid outlet interface which are matched according to the interface specification of the test piece.
16. The control method according to claim 9, wherein an air compressor is further provided in the cooling circuit for returning the cooling liquid in the test piece to the water tank after the test is finished, the control method further comprising:
and step S4, starting the air compressor to press the cooling liquid in the test piece back to the water tank after the test is finished.
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| CN111289171B (en) * | 2020-05-08 | 2020-07-31 | 南京源自飞网络科技有限公司 | Fluid stable pressure measuring device of water-cooling radiator |
| CN112098854B (en) * | 2020-08-06 | 2023-07-21 | 上海艾福亿维测试设备有限公司 | Cooling test system suitable for fuel cell test and control method thereof |
| CN112432797B (en) * | 2020-08-31 | 2023-08-22 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Multifunctional universal integrated liquid cooling equipment comprehensive test system |
| CN112135489A (en) * | 2020-09-25 | 2020-12-25 | 中车株洲电力机车研究所有限公司 | Active heat exchange system and temperature control method thereof |
| CN114001365B (en) * | 2021-12-31 | 2022-04-05 | 光大环保技术装备（常州）有限公司 | Water-cooling runner temperature and flow detection system and method and runner parameter testing system |
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