Liquid cooling heat exchange unit and control method

Abstract

The invention discloses a liquid cooling heat exchange unit and a control method. Circulating power is provided for a system working medium through a main circulating pump; a heat exchange channel is provided for a system working medium through the plate heat exchanger; the pressure of a system working medium is balanced through the pressure stabilizing module; the pressure of a system working medium is maintained through the liquid supplementing module; impurities of a system working medium are filtered through a filter; and the valve control system is adjusted to exhaust gas and control the flow of a system working medium. The structure and the connecting mode of the pressure stabilizing module are improved, liquid in the expansion tank can circulate through the pressure difference between the two ends of the bypass pipe, the situation that only liquid near the inlet and outlet ends of a pipeline flows in the working process of the expansion tank is avoided, dead water is prevented, meanwhile, the liquid supplementing module is optimally designed, and the energy consumption is reduced. The liquid supplementing tank can empty liquid in the tank while automatic liquid supplementing is achieved, dead water in the system is further prevented, and the plate heat exchanger can be widely applied to the technical field of plate heat exchangers.

Description

Technical Field

[0001] The present invention relates to the technical field of plate heat exchangers, and in particular to a liquid cooling heat exchange unit and a control method thereof. Background Art

[0002] The cold plate liquid cooling system of the data center uses liquid as the heat exchange medium, and the circulation pump provides circulation power to circulate the liquid between the liquid-cooled server cabinet, pipelines and plate heat exchangers; at the same time, an expansion tank is used as a component to balance the water pressure of the system. When the system pressure is greater than the expansion tank pressure, the liquid in the system can enter the expansion tank, and when the system pressure is less than the expansion tank pressure, the liquid in the expansion tank can be replenished into the system. When the system leaks or the server is put on the shelf during use, and the water in the expansion tank is insufficient to replenish the system liquid, it is usually automatically replenished through the built-in water replenishment tank of the equipment.

[0003] However, in actual use, when the liquid cooling system is running stably, the water pressure changes within a small range, and the amount of liquid entering and exiting the expansion tank is small. Each time the pressure fluctuates, only a small amount of liquid is replaced at the tank port, and most of the liquid in the tank cannot be circulated, forming dead water; the liquid in the water replenishment tank forms dead water due to the lack of circulation after long-term storage because there is no need for replenishment in the system. Dead water will produce bacteria, dirt and other liquid deterioration phenomena over time, which may cause dirty blockage, corrosion and even leakage of plate replacement and cold plate, affecting the normal operation of the system.

[0004] At present, the industry usually adopts adding chemicals to the liquid to delay corrosion and scaling. However, for the water storage tanks and places where the flow is not smooth in the liquid cooling heat exchange equipment, it is impossible to improve the water quality by adding chemicals. It can only be improved by stopping the system to change the liquid and flushing the system. The maintenance action is large and the cost is high. Summary of the invention

[0005] The purpose of the present invention is to solve one of the technical problems existing in the prior art to at least a certain extent.

[0006] To this end, one purpose of an embodiment of the present invention is to provide a liquid-cooled heat exchange unit. By designing and improving the pressure stabilizing module and the liquid replenishing module in the liquid-cooled heat exchange unit, the system working fluid can circulate and be discharged and renewed, thereby preventing the generation of dead water in the system.

[0007] The first technical solution adopted by the present invention is:

[0008] A liquid-cooled heat exchange unit, characterized in that it includes a main circulation pump, a plate heat exchanger, a filter, a pressure stabilizing module, a liquid replenishing module and a regulating valve, the plate heat exchanger and the filter are both connected to the main circulation pump, the pressure stabilizing module and the liquid replenishing module are both connected to the filter, the liquid replenishing module is connected to the pressure stabilizing module, the main circulation pump, the plate heat exchanger, the filter, the pressure stabilizing module and the liquid replenishing module are all connected to the regulating valve, the main circulation pump is used to provide circulation power for the system working fluid, the plate heat exchanger is used to provide a heat exchange channel for the system working fluid, the pressure stabilizing module is used to balance the pressure of the system working fluid, the liquid replenishing module is used to maintain the pressure of the system working fluid, the filter is used to filter impurities in the system working fluid, and the regulating valve is used to control the system to exhaust and control the flow of the system working fluid.

[0009] Further, the pressure stabilizing module includes a bladder expansion tank, a first exhaust valve, a first drain valve, a first electric valve, a first manual valve, a second manual valve and a third manual valve, the first exhaust valve, the first drain valve, the first manual valve and the third manual valve are all connected to the bladder expansion tank, the first manual valve and the first drain valve are both connected to the first exhaust valve, the first manual valve is connected to the first drain valve, and the second manual valve and the third manual valve are both connected to the first electric valve.

[0010] Furthermore, the rehydration module includes a rehydration tank, a liquid level sensor, a second drain valve, a rehydration tank electric valve, an external electric valve, a rehydration filter, a rehydration pump and a rehydration electric valve. The liquid level sensor, the second drain valve and the rehydration tank electric valve are all connected to the rehydration tank, the external electric valve and the rehydration filter are all connected to the rehydration tank electric valve, the external electric valve and the rehydration pump are all connected to the rehydration filter; the rehydration pump is connected to the rehydration electric valve, and the rehydration electric valve is connected to the secondary side liquid return pipe.

[0011] Furthermore, the refilling module is specifically used for: detecting the liquid level of the refilling tank through the liquid level sensor; emptying the liquid in the refilling tank through the second drain valve; opening the external electric valve and the refilling electric valve, using an external refilling device to refill the secondary side return pipe; opening the refilling tank electric valve and the refilling electric valve, using the refilling tank to refill the secondary side return pipe; opening the refilling tank electric valve, opening the external electric valve and closing the refilling electric valve, using the external refilling device to refill the refilling tank.

[0012] Furthermore, the liquid-cooled heat exchange unit also includes a check valve, which is connected to the main circulation pump and is used to prevent backflow and cross-flow of the system working fluid.

[0013] Furthermore, the liquid-cooled heat exchange unit also includes a first pressure sensor group, a temperature sensor group, a flow sensor group and a conductivity sensor, the first pressure sensor group is used to detect the primary side liquid inlet pressure, the primary side liquid outlet pressure, the secondary side liquid supply pressure and the secondary side liquid return pressure, the temperature sensor group is used to detect the primary side liquid inlet temperature, the primary side liquid outlet temperature, the secondary side liquid supply temperature and the secondary side liquid return temperature, the flow sensor group is used to detect the primary side liquid inlet flow and the secondary side liquid supply flow, and the conductivity sensor is used to detect the conductivity parameters of the secondary side working medium.

[0014] Furthermore, the liquid-cooled heat exchange unit also includes a second pressure sensor group, the second pressure sensor group is connected to the filter, and the second pressure sensor group is used to detect the pressure values ​​at both ends of the filter.

[0015] Furthermore, the regulating valve includes a butterfly valve group, an exhaust valve group and a drain valve group, the butterfly valve group is used to control the flow of the system working fluid in the pipeline, the exhaust valve group is used to control the exhaust of the closed system pipeline, and the drain valve group is used to control the pipeline to drain the system working fluid.

[0016] The second technical solution adopted by the present invention is:

[0017] A control method for a liquid cooling heat exchange unit, which is implemented by the above-mentioned liquid cooling heat exchange unit, comprises the following steps:

[0018] Provide circulation power for the system working fluid through the main circulation pump;

[0019] Providing a heat exchange channel for the system working fluid through a plate heat exchanger;

[0020] Balancing the pressure of the system working fluid through a pressure stabilizing module;

[0021] Maintaining the pressure of the system working fluid through a fluid replenishment module;

[0022] Filtering impurities in the system working fluid through a filter;

[0023] The exhaust is carried out and the flow of the working medium of the system is controlled by adjusting the valve control system.

[0024] The beneficial effects of the present invention are as follows: the present invention improves the structure and connection method of the expansion tank in the voltage stabilizing module, so that the expansion tank can be connected to the secondary side liquid supply pipe and the secondary side liquid return pipe through the bypass pipe, and the pressure difference at both ends of the bypass pipe is used to circulate the liquid in the expansion tank, thereby avoiding the situation where only the liquid near the inlet and outlet ends of the pipeline can flow during the operation of the expansion tank, thereby preventing the generation of dead water; the present invention also optimizes the design of the liquid replenishing module, and introduces a drain valve and a variety of control valves to achieve automatic liquid replenishment while allowing the liquid replenishing tank to drain the liquid in the tank, complete draining and replacement, and further prevent the generation of dead water in the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A system schematic diagram of a liquid cooling heat exchange unit provided in an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of a working process of a voltage stabilizing module provided in an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the system structure of a fluid infusion module provided in an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of a working process of a fluid infusion module provided in an embodiment of the present invention;

[0029] Figure 5 A flow chart of the steps of a control method for a liquid cooling heat exchange unit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limitations of the present invention. For the step numbers in the following embodiments, they are only provided for the convenience of explanation, and the order between the steps is not limited in any way. The execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.

[0031] In the description of the present invention, the meaning of "a plurality" is two or more than two. If there is a description of "a first" or "a second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. In addition, unless otherwise defined, all technical and scientific terms used in this document have the same meaning as those commonly understood by those skilled in the art.

[0032] Figure 1A schematic diagram of a system of a liquid cooling heat exchange unit provided in an embodiment of the present invention, referring to Figure 1 The embodiment of the present invention provides a liquid-cooled heat exchange unit, characterized in that it includes a main circulation pump, a plate heat exchanger, a filter, a pressure stabilizing module, a liquid replenishing module and a regulating valve. The plate heat exchanger and the filter are both connected to the main circulation pump, the pressure stabilizing module and the liquid replenishing module are both connected to the filter, the liquid replenishing module is connected to the pressure stabilizing module, the main circulation pump, the plate heat exchanger, the filter, the pressure stabilizing module and the liquid replenishing module are all connected to the regulating valve, the main circulation pump is used to provide circulation power for the system working fluid, the plate heat exchanger is used to provide a heat exchange channel for the system working fluid, the pressure stabilizing module is used to balance the pressure of the system working fluid, the liquid replenishing module is used to maintain the pressure of the system working fluid, the filter is used to filter impurities in the system working fluid, and the regulating valve is used to control the system to exhaust and control the flow of the system working fluid.

[0033] Specifically, refer to Figure 1The meanings and functions of the component numbers on the pipeline are summarized as follows: PT06, PT07: pressure sensors, monitoring the secondary side return liquid pressure; TT06: temperature sensor, detecting the secondary side return liquid temperature; C11: airbag expansion tank, stabilizing the system pressure; PT08: pressure sensor, monitoring the pressure before the secondary side filter; PT09, PT10: pressure sensors, monitoring the circulating pump inlet pressure and monitoring the pressure after the secondary side filter; Z01, Z02: filter, filtering liquid impurities in the pipeline; PT08-PT10: the pressure values ​​before and after the filter can be taken to calculate the pressure difference to determine the filter dirtiness and blockage; P01, P02: main circulating pump, providing circulation for the system working fluid Ring power; V001, V002: check valve, to avoid water hammer effect when the pump is stopped and cross flow of working fluid when a single pump is running; PT01: pressure sensor, to monitor the outlet pressure of the water pump; E01: plate heat exchanger, to provide heat exchange channels for working fluids on both sides of the CDU, and the working fluids on both sides can exchange heat in the plates; QIT01: conductivity electrode and conductivity transmitter, to monitor the conductivity data of the secondary side circulating water quality; FIT01: flow sensor, to monitor the secondary side supply flow; TT01, TT02: temperature sensor, to monitor the secondary side supply temperature; PT03:, PT04: pressure sensor, to monitor the secondary side supply pressure; V750: safety valve, secondary side supply overpressure protection ; V123: electric valve, controls the flow of fluid in the pipeline; PT31: pressure sensor, monitors the primary side liquid inlet pressure and the pressure before the primary side filter; PT32: pressure sensor, monitors the primary side liquid inlet pressure and the pressure after the primary side filter; Z21: filter, filters liquid impurities in the pipeline; PT31-PT32: the pressure values ​​before and after the filter can be taken to calculate the pressure difference and determine the filter blockage; TT31: temperature sensor, detects the primary side liquid inlet temperature; P11 and P111: liquid replenishment pump; V304: electric valve, adjusts the primary side liquid inlet flow; FIT31: flow sensor, monitors the primary side liquid inlet flow; PT33: pressure sensor, monitors the primary side liquid inlet flow Side outlet liquid pressure; TT32: temperature sensor, detecting the primary side outlet liquid temperature; V401~V408, V601, V451, V453, V406, V146, V141, V231, V145, V144: manual control valve, used to control the connection between adjacent components and other components; LT11: liquid level sensor; V003, V004, V161, V162, V163: butterfly valve, controlling the flow of fluid in the pipeline; V301, V302, V303, V351, V352: exhaust valve, used for exhausting closed system pipelines; V201~V204, V251, V252: drain valve, used for draining pipelines.

[0034] Reference Figure 1In the embodiment of the present invention, the main circulation pump, the plate heat exchanger, the filter, the regulating valve, the pressure stabilizing module and the liquid module are connected by pipelines to form a circulation loop. The filters Z01 and Z02 filter the secondary side return liquid to ensure the purity of the liquid. At the same time, pressure sensors are provided at both ends of the filter to detect the pressure difference between the inlet and outlet liquids, so as to determine whether the filter is blocked. The main circulation pumps P01 and P02 are connected to the check valves V001 and V002 respectively. The check valves can prevent the water hammer effect when the pump is stopped and the cross flow phenomenon when the system is running with a single pump. The main circulation pump transports the secondary side return liquid to the plate heat exchanger E01 to exchange heat with the primary side inlet liquid. For the secondary side supply liquid after the heat exchange is completed, a conductivity sensor QIT01 (i.e., conductivity electrode and conductivity transmitter), a flow sensor QIT01, temperature sensors TT01 and TT02, and pressure sensors PT03 and PT04 are provided to detect the state of the secondary side supply liquid to ensure that the impurity level, flow rate, temperature and pressure of the secondary side supply liquid are within the design range. A safety valve V750 is provided at the outlet of the secondary side liquid supply to provide secondary side liquid supply overpressure protection. The secondary side liquid supply that meets the requirements returns to the secondary side return pipe and becomes the secondary side return liquid. The pressure sensors PT06 and PT07 and the temperature sensor TT06 further ensure that the temperature and pressure of the secondary side return liquid are within the design range. An expansion tank C11 is provided at the secondary side return pipe to balance the pressure of the secondary side return pipe. When the pressure of the return pipe is high, the liquid will enter the expansion tank to reduce the system pressure. When the pressure of the return pipe is low, the liquid will enter the pipeline from the expansion tank to increase the system pressure. The liquid replenishment module is connected to the secondary side return pipe, and the liquid level value of the liquid replenishment tank C21 is detected by the liquid level sensor LT11. The system is automatically replenished according to the detection value, whether there is an external water supply system, and the working condition of the external water supply system. Finally, the secondary side return liquid after the expansion tank pressure stabilization and the liquid replenishment module replenishment flows back to the main circulation pump through the filter and enters the next round of circulation.

[0035] For the existing liquid cooling system, after the system runs stably, the water pressure changes within a small range, and the amount of liquid entering and exiting the expansion tank is small. Each time the pressure fluctuates, only a small amount of liquid is replaced at the tank port. Most of the liquid in the tank cannot be circulated and forms dead water. The liquid in the second water replenishment tank also lacks circulation due to the lack of replenishment demand in the system and is stored for a long time, which is also easy to form dead water. As the dead water accumulates over time, bacteria, dirt and other liquid deterioration phenomena will occur, which may cause dirty blockage, corrosion and even leakage of plate replacement and cold plate, affecting the normal operation of the system.

[0036] The existing technology usually adopts adding chemicals to the liquid to delay corrosion and scaling. However, for the water storage tank and the places where the flow is not smooth in the liquid cooling heat exchange equipment, it is impossible to improve the water quality by adding chemicals. It can only be improved by stopping the system to change the liquid and flushing the system, which is a large maintenance action and high cost.

[0037] In the embodiment of the present invention, the expansion tank in the pressure stabilizing module can communicate with the secondary side liquid return pipe and the secondary side liquid supply pipe through a bypass pipe, and use the pressure difference between the two to drive the liquid in the expansion tank to circulate, thereby solving the dead water problem of the expansion tank. In the liquid replenishment module, by designing the working logic of each valve in the module, the functions of automatic liquid replenishment and regular emptying and replacement are realized, solving the dead water problem of the liquid replenishment tank.

[0038] It can be recognized that the embodiment of the present invention improves the structure and connection method of the expansion tank in the voltage stabilizing module, so that the expansion tank can be connected to the secondary side liquid supply pipe and the secondary side liquid return pipe through the bypass pipe, and the pressure difference at both ends of the bypass pipe is used to circulate the liquid in the expansion tank, thereby avoiding the situation where only the liquid near the inlet and outlet ends of the pipe can flow during the operation of the expansion tank, and preventing the generation of dead water; at the same time, by optimizing the design of the liquid replenishment module, by introducing the drain valve and a variety of control valves, automatic liquid replenishment is achieved, and the liquid replenishment tank can be emptied of the liquid in the tank, and the emptying and replacement are completed, further preventing the generation of dead water in the system, and the dead water problem of the water storage tank in the liquid cooling heat exchange unit is completely solved through a simple and efficient design. Compared with traditional solutions such as adding preservatives to the water body or shutting down the system for liquid replacement, the design of the embodiment of the present invention greatly reduces the operation and maintenance costs and service life of the liquid cooling heat exchange unit.

[0039] Further as an optional embodiment, the pressure stabilizing module includes a bladder expansion tank, a first exhaust valve, a first drain valve, a first electric valve, a first manual valve, a second manual valve and a third manual valve. The first exhaust valve, the first drain valve, the first manual valve and the third manual valve are all connected to the bladder expansion tank, the first manual valve and the first drain valve are both connected to the first exhaust valve, the first manual valve is connected to the first drain valve, and the second manual valve and the third manual valve are both connected to the first electric valve.

[0040] Further as an optional implementation, the pressure stabilizing module is specifically used to: empty the working fluid in the bladder expansion tank through the first drain valve; connect the bladder expansion tank with the secondary side return pipe by opening the first manual valve, thereby balancing the pressure of the system working fluid; connect the bladder expansion tank with the secondary side supply pipe by opening the second manual valve, the third manual valve and the first electric valve, thereby allowing the working fluid in the bladder expansion tank to circulate.

[0041] Specifically, refer to Figure 1The pressure stabilizing module includes a bladder expansion tank C11, an exhaust valve V303, a drain valve V221, an electric valve V123, and manual valves V121, V122, and V124. The expansion tank is designed with dual interfaces. One interface is connected to the equipment return pipe through an expansion pipe to stabilize the system. The valve V121 on the pipe is normally open, and the expansion tank can be maintained by closing the ball valve; one interface is connected to the equipment supply pipe through the expansion tank circulation bypass pipe. The bypass pipe is equipped with two normally open ball valves (V122, V124) and one normally closed electric ball valve (V123).

[0042] The logic flow of the expansion tank circulation electric valve is as follows Figure 2 As shown, the circulation electric valve V123 is executed with regular start / stop command, and it is automatically closed after the opening time reaches the set value, and it is automatically opened after the closing interval reaches the set value. When the electric valve is fully opened, due to the pressure difference at both ends of the bypass pipe, it can provide circulation power for the working fluid in the pipe, and the liquid in the liquid supply pipe will enter the expansion tank. The liquid in the expansion tank will be circulated and diluted, thereby achieving the effect of activating dead water, thereby greatly improving the problem of water deterioration in the tank.

[0043] Further as an optional embodiment, the rehydration module includes a rehydration tank, a liquid level sensor, a second drain valve, a rehydration tank electric valve, an external electric valve, a rehydration filter, a rehydration pump and a rehydration electric valve. The liquid level sensor, the second drain valve and the rehydration tank electric valve are all connected to the rehydration tank, the external electric valve and the rehydration filter are all connected to the rehydration tank electric valve, the external electric valve and the rehydration pump are all connected to the rehydration filter; the rehydration pump is connected to the rehydration electric valve, and the rehydration electric valve is connected to the secondary side return pipe.

[0044] Further as an optional embodiment, the refilling module is specifically used to: detect the liquid level of the refilling tank through a liquid level sensor; empty the liquid in the refilling tank through a second drain valve; open the external electric valve and the refilling electric valve, and use the external refilling device to refill the secondary side return pipe; open the refilling tank electric valve and the refilling electric valve, and use the refilling tank to refill the secondary side return pipe; open the refilling tank electric valve, open the external electric valve, and close the refilling electric valve, and use the external refilling device to refill the refilling tank.

[0045] Specifically, refer to Figure 3 The refill module includes a refill tank C21, a refill pump P11, a filter Z11, electric valves V147, V142, V103, and various manual valves and drain valves. Combined with the electric valves in the refill module, the refill module can achieve the following functions: automatically refill the system with liquid through an external pure water module; automatically refill the system with liquid through a built-in refill tank; automatically refill the built-in refill tank with liquid through an external pure water module; the built-in refill tank is automatically drained regularly; the built-in refill tank can be manually refilled. The control logic of the refill module is as follows: Figure 4As shown, when the secondary side return water pressure is less than the set value of the water replenishment pressure, the replenishment electric valve V103 is opened. If the actual project is equipped with an external pure water module, external replenishment is preferred for replenishment (external replenishment given pressure ≥ 1 bar); when the secondary side return water pressure is greater than the water replenishment pressure safety value, the replenishment electric valve V103 is closed to stop replenishment. After starting the replenishment, if the secondary side return water pressure still does not reach the set pressure value after the set replenishment time t1, and there is no low liquid level alarm in the replenishment tank, the replenishment electric valve V142 is opened, the replenishment pump P11 is started, and the replenishment tank is automatically switched to replenishment; when the system is replenished with liquid through the built-in replenishment tank, if the replenishment tank reports a low liquid level alarm, the system replenishment is stopped, and the replenishment pump P11, the replenishment electric valve V142, and the replenishment electric valve V103 are closed in turn, and the replenishment failure alarm is reported. By introducing the drain valve V147, the replenishment tank can be regularly flushed and refilled. The dead water in the water replenishment tank is drained by opening the electric valve V147 regularly, and the replenishment electric valve V103 is closed when the low liquid level alarm occurs; the replenishment electric valve V142 is opened to add liquid to the water tank through the external pure water system until the electric valve V142 is closed when the high liquid level alarm occurs; the regular draining time can be set; V147 and V142 cannot be opened at the same time.

[0046] It can be appreciated that by designing and optimizing the internal structure and control logic of the water replenishment module, the embodiment of the present invention can achieve functions such as automatic water replenishment and regular draining and replacement, further solving the dead water problem in the liquid cooling heat exchange unit.

[0047] As a further optional implementation, the liquid-cooled heat exchange unit also includes a check valve, which is connected to the main circulation pump and is used to prevent backflow and cross-flow of the system working fluid.

[0048] Specifically, refer to Figure 1 , the main circulation pumps P01 and P02 in the embodiment of the present invention are connected to the water stop valves V001 and V002, respectively. When the pump is stopped, the flow of the fluid in the pump will suddenly weaken or be interrupted, causing the downstream fluid to continue to flow due to inertia, impacting other pipeline terminal devices that have been closed. This fluid impact will produce a short-term high-pressure fluctuation in the pipeline, forming a water hammer effect, which may cause damage to the pipeline and equipment, and even create the risk of leakage or bursting. When a single pump is running, since multiple pumps are connected in parallel to the same water supply system, the pressure will push the fluid from the running pump to the disabled pump, causing the liquid to circulate in the disabled pump, forming a series flow, causing equipment wear and affecting the service life. In this embodiment, a check valve is set after the main circulation pump to ensure the unidirectional flow of the system working fluid, thereby preventing the occurrence of water hammer effect and series flow.

[0049] Further as an optional embodiment, the liquid-cooled heat exchange unit also includes a first pressure sensor group, a temperature sensor group, a flow sensor group and a conductivity sensor, the first pressure sensor group is used to detect the primary side liquid inlet pressure, the primary side liquid outlet pressure, the secondary side liquid supply pressure and the secondary side liquid return pressure, the temperature sensor group is used to detect the primary side liquid inlet temperature, the primary side liquid outlet temperature, the secondary side liquid supply temperature and the secondary side liquid return temperature, the flow sensor group is used to detect the primary side liquid inlet flow and the secondary side liquid supply flow, and the conductivity sensor is used to detect the conductivity parameters of the secondary side working fluid.

[0050] Specifically, refer to Figure 1 The first pressure sensor group includes PT01, PT33, PT03, PT04, PT06 and PT07, among which PT01 is used to detect the pressure of the secondary side return liquid after leaving the pump, PT33 is used to detect the pressure of the primary side outlet liquid before leaving the pipeline, PT03 and PT04 are used to detect the pressure of the secondary side supply liquid before leaving the secondary side supply liquid pipe, PT06 and PT07 are used to monitor the pressure of the secondary side return liquid after entering the secondary side return liquid pipe; the temperature sensor group includes TT01, TT02, TT06, TT31, TT32, among which TT01 and TT02 are used to detect the secondary side supply liquid temperature, TT06 is used to detect the secondary side return liquid temperature, TT31 is used to detect the primary side inlet liquid temperature, and TT32 is used to detect the primary side outlet liquid temperature. The flow sensor group includes FIT01 and FIT31, among which FIT01 is used to monitor the secondary side liquid supply flow, and FIT31 is used to monitor the primary side liquid inlet flow. The conductivity sensor QIT01 includes a conductivity electrode and a conductivity transmitter. The conductivity electrode is used to measure the conductivity of the system working fluid according to the current between the electrodes, and the conductivity transmitter is used to convert the electrochemical signal detected by the conductivity electrode into a standard electrical signal for use by the monitoring system.

[0051] It can be appreciated that the embodiment of the present invention achieves comprehensive monitoring of the temperature, pressure, flow rate and conductivity of the system working fluid by setting up a series of sensor groups, ensuring that each parameter is within the range of system design, realizing real-time monitoring of the heat exchange effect, and being able to promptly detect abnormal conditions such as blockage or water quality degradation, thereby avoiding system damage and safety accidents.

[0052] As a further optional implementation, the liquid cooling heat exchange unit further includes a second pressure sensor group, the second pressure sensor group is connected to the filter, and the second pressure sensor group is used to detect the pressure values ​​at both ends of the filter.

[0053] Specifically, the second pressure sensor group includes PT31, PT32, PT08, PT09 and PT010

[0054] Among them, PT31 is used to detect the pressure of the primary side outlet liquid before the filter, PT32 is used to detect the pressure of the primary side outlet liquid after the filter, PT08 is used to monitor the pressure of the secondary side return liquid before the filter, PT09 and PT010 are used to detect the pressure of the secondary side return liquid after the filter. By detecting the pressure values ​​at both ends of the filter, the blockage of the filter can be quickly evaluated to prevent the increase of pump load or insufficient flow caused by filter blockage.

[0055] Further as an optional implementation, the regulating valve includes a butterfly valve group, an exhaust valve group and a drain valve group, the butterfly valve group is used to control the flow of the system working fluid in the pipeline, the exhaust valve group is used to control the exhaust of the closed system pipeline, and the drain valve group is used to control the pipeline to drain the system working fluid.

[0056] Specifically, the butterfly valve group includes V003, V004, V161, V162 and V163, the exhaust valve group includes V301, V302, V303, V351 and V352, and the drain valve group includes V201, V202, V203, V204, V251 and V252. The butterfly valve controls the flow of the system working fluid in the pipeline by rotating the butterfly plate inside it, and controls the flow rate of the fluid by controlling the opening angle of the butterfly plate, so as to achieve flexible regulation of the working state of the system; the exhaust valve discharges the air in the pipeline to avoid problems such as air blockage, vibration and corrosion caused by air stagnation; the drain valve can be opened when the system is maintained, repaired or the working fluid is replaced, and all the working fluid in the system pipeline is emptied to ensure the smooth progress of subsequent inspection or maintenance work and avoid the influence of working fluid residue on operation.

[0057] Reference Figure 5 The embodiment of the present invention provides a control method for a liquid cooling heat exchange unit, which is implemented by the above-mentioned liquid cooling heat exchange unit, and includes the following steps:

[0058] S101, providing circulation power for the system working fluid through the main circulation pump;

[0059] S102, providing a heat exchange channel for the system working fluid through a plate heat exchanger;

[0060] S103, balancing the pressure of the system working fluid through a pressure stabilizing module;

[0061] S104, maintaining the pressure of the system working fluid through the fluid replenishment module;

[0062] S105, filtering impurities in the system working fluid through a filter;

[0063] S106, exhaust gas is controlled by adjusting the valve control system and the flow of the system working fluid is controlled.

[0064] It can be understood that the contents of the above system embodiments are all applicable to the present method embodiments, the functions specifically implemented by the present method embodiments are the same as those of the above system embodiments, and the beneficial effects achieved are also the same as those achieved by the above system embodiments.

[0065] It should be appreciated that embodiments of the present invention may be implemented or enforced by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable memory. The above methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer-readable storage medium configured with a computer program, wherein the storage medium so configured causes the computer to operate in a specific and predefined manner, according to the methods and drawings described in the specific embodiments. Each program may be implemented in a high-level procedural or object-oriented programming language to communicate with a computer system. However, if desired, the program may be implemented in an assembly or machine language. In any case, the language may be a compiled or interpreted language. In addition, the program may be run on a programmed dedicated integrated circuit for this purpose.

[0066] Furthermore, the operations of the processes described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes described herein (or variations and / or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) that is executed collectively on one or more processors, by hardware, or a combination thereof. The computer programs described above include a plurality of instructions that may be executed by one or more processors.

[0067] Further, the above method can be implemented in any type of computing platform that is operably connected to a suitable computer, including but not limited to a personal computer, a minicomputer, a mainframe, a workstation, a network or distributed computing environment, a separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, etc. Various aspects of the present invention can be implemented in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, an optical read and / or write storage medium, a RAM, a ROM, etc., so that it can be read by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the process described herein. In addition, the machine-readable code, or a portion thereof, can be transmitted via a wired or wireless network. When such media includes instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor, the invention described herein includes these and other different types of non-transitory computer-readable storage media. When programmed according to the methods and techniques described in the present invention, the present invention also includes the computer itself.

[0068] The computer program can be applied to input data to perform the functions described herein, thereby converting the input data to generate output data stored in a non-volatile memory. The output information can also be applied to one or more output devices such as a display. In a preferred embodiment of the present invention, the converted data represents physical and tangible objects, including specific visual depictions of physical and tangible objects produced on the display.

[0069] The above are only preferred embodiments of the present invention. The present invention is not limited to the above embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. Within the scope of protection of the present invention, its technical solutions and / or implementation methods may have various modifications and changes.

Claims

1. A liquid cooling heat exchange unit, characterized in that: It includes a main circulation pump, a plate heat exchanger, a filter, a pressure stabilizing module, a liquid replenishing module and a regulating valve. The plate heat exchanger and the filter are both connected to the main circulation pump, the pressure stabilizing module and the liquid replenishing module are both connected to the filter, the liquid replenishing module is connected to the pressure stabilizing module, the main circulation pump, the plate heat exchanger, the filter, the pressure stabilizing module and the liquid replenishing module are all connected to the regulating valve. The main circulation pump is used to provide circulation power for the system working fluid, the plate heat exchanger is used to provide a heat exchange channel for the system working fluid, the pressure stabilizing module is used to balance the pressure of the system working fluid, the liquid replenishing module is used to maintain the pressure of the system working fluid, the filter is used to filter impurities in the system working fluid, and the regulating valve is used to control the system to exhaust and control the flow of the system working fluid.

2. A liquid cooling heat exchange unit according to claim 1, characterized in that: The pressure stabilizing module includes a bladder expansion tank, a first exhaust valve, a first drain valve, a first electric valve, a first manual valve, a second manual valve and a third manual valve. The first exhaust valve, the first drain valve, the first manual valve and the third manual valve are all connected to the bladder expansion tank, the first manual valve and the first drain valve are both connected to the first exhaust valve, the first manual valve is connected to the first drain valve, and the second manual valve and the third manual valve are both connected to the first electric valve.

3. A liquid cooling heat exchange unit according to claim 2, characterized in that: The pressure stabilizing module is specifically used for: emptying the working fluid in the bladder expansion tank through the first drain valve; connecting the bladder expansion tank with the secondary side return pipe by opening the first manual valve, thereby balancing the pressure of the system working fluid; connecting the bladder expansion tank with the secondary side supply pipe by opening the second manual valve, the third manual valve and the first electric valve, thereby allowing the working fluid in the bladder expansion tank to circulate.

4. A liquid cooling heat exchange unit according to claim 3, characterized in that: The rehydration module includes a rehydration tank, a liquid level sensor, a second drain valve, a rehydration tank electric valve, an external electric valve, a rehydration filter, a rehydration pump and a rehydration electric valve. The liquid level sensor, the second drain valve and the rehydration tank electric valve are all connected to the rehydration tank, the external electric valve and the rehydration filter are all connected to the rehydration tank electric valve, the external electric valve and the rehydration pump are all connected to the rehydration filter; the rehydration pump is connected to the rehydration electric valve, and the rehydration electric valve is connected to the secondary side liquid return pipe.

5. A liquid cooling heat exchange unit according to claim 4, characterized in that: The liquid replenishment module is specifically used for: detecting the liquid level of the liquid replenishment tank through the liquid level sensor; emptying the liquid in the liquid replenishment tank through the second drain valve; opening the external electric valve and the liquid replenishment electric valve, using an external liquid replenishment device to replenish the secondary side liquid return pipe; opening the liquid replenishment tank electric valve and the liquid replenishment electric valve, using the liquid replenishment tank to replenish the secondary side liquid return pipe; opening the liquid replenishment tank electric valve, opening the external electric valve and closing the liquid replenishment electric valve, using the external liquid replenishment device to replenish the liquid replenishment tank.

6. The liquid cooling heat exchange unit according to claim 1, characterized in that: The liquid-cooled heat exchange unit also includes a check valve, which is connected to the main circulation pump and is used to prevent backflow and cross-flow of the system working fluid.

7. The liquid cooling heat exchange unit according to claim 1, characterized in that: The liquid-cooled heat exchange unit also includes a first pressure sensor group, a temperature sensor group, a flow sensor group and a conductivity sensor. The first pressure sensor group is used to detect the primary side liquid inlet pressure, the primary side liquid outlet pressure, the secondary side liquid supply pressure and the secondary side liquid return pressure. The temperature sensor group is used to detect the primary side liquid inlet temperature, the primary side liquid outlet temperature, the secondary side liquid supply temperature and the secondary side liquid return temperature. The flow sensor group is used to detect the primary side liquid inlet flow and the secondary side liquid supply flow. The conductivity sensor is used to detect the conductivity parameters of the secondary side working medium.

8. The liquid cooling heat exchange unit according to claim 1, characterized in that: The liquid-cooling heat exchange unit further includes a second pressure sensor group, which is connected to the filter and is used to detect pressure values ​​at both ends of the filter.

9. The liquid cooling heat exchange unit according to claim 1, characterized in that: The regulating valve includes a butterfly valve group, an exhaust valve group and a drain valve group. The butterfly valve group is used to control the flow of the system working fluid in the pipeline, the exhaust valve group is used to control the exhaust of the closed system pipeline, and the drain valve group is used to control the pipeline to drain the system working fluid.

10. A control method for a liquid cooling heat exchange unit, which is implemented by the liquid cooling heat exchange unit according to any one of claims 1 to 9, characterized in that: The following steps are involved: Provide circulation power for the system working fluid through the main circulation pump; Providing a heat exchange channel for the system working fluid through a plate heat exchanger; Balancing the pressure of the system working fluid through a pressure stabilizing module; Maintaining the pressure of the system working fluid through a fluid replenishment module; Filtering impurities in the system working fluid through a filter; The exhaust is carried out and the flow of the working medium of the system is controlled by adjusting the valve control system.

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