WO2025031442A1 - 液冷散热系统 - Google Patents

液冷散热系统 Download PDF

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Publication number
WO2025031442A1
WO2025031442A1 PCT/CN2024/110629 CN2024110629W WO2025031442A1 WO 2025031442 A1 WO2025031442 A1 WO 2025031442A1 CN 2024110629 W CN2024110629 W CN 2024110629W WO 2025031442 A1 WO2025031442 A1 WO 2025031442A1
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WO
WIPO (PCT)
Prior art keywords
secondary side
unit
primary side
liquid
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/110629
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English (en)
French (fr)
Inventor
盛建
刘成
胡定林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Metabrain Intelligent Technology Co Ltd
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Suzhou Metabrain Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Metabrain Intelligent Technology Co Ltd filed Critical Suzhou Metabrain Intelligent Technology Co Ltd
Priority to US19/115,628 priority Critical patent/US12520454B2/en
Publication of WO2025031442A1 publication Critical patent/WO2025031442A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20763—Liquid cooling without phase change
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20763—Liquid cooling without phase change
    • H05K7/2079—Liquid cooling without phase change within rooms for removing heat from cabinets
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20263—Heat dissipaters releasing heat from coolant
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20763—Liquid cooling without phase change
    • H05K7/20781—Liquid cooling without phase change within cabinets for removing heat from server blades
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20836—Thermal management, e.g. server temperature control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/06—Safety or protection arrangements; Arrangements for preventing malfunction by using means for draining heat exchange media from heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/20—Safety or protection arrangements; Arrangements for preventing malfunction for preventing development of microorganisms
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20718—Forced ventilation of a gaseous coolant
    • H05K7/20736—Forced ventilation of a gaseous coolant within cabinets for removing heat from server blades

Definitions

  • the present application relates to the field of liquid cooling technology, and in particular to a liquid cooling heat dissipation system.
  • the current server liquid cooling technology mainly includes immersion liquid cooling and cold plate liquid cooling. Immersion liquid cooling directly immerses the server in a special coolant for server heat dissipation. Due to its high comprehensive use cost and difficult maintenance, its application scale is relatively small.
  • Cold plate liquid cooling uses a liquid-cooled cold plate that is in direct contact with the server's heat-generating components (CPU, GPU and other components) for heat dissipation.
  • Its heat dissipation principle is that the coolant pump drives the heat exchange system water pump to drive the coolant (water, ethylene glycol, etc.) to continuously flow through the internal channel of the cold plate.
  • the coolant exchanges heat with the server's heat-generating components through the cold plate wall in the channel, thereby taking away the heat generated by the operation of the server's heat-generating components to achieve the purpose of heat dissipation.
  • the coolant circulation pipeline in the current server liquid cooling technology is a positive pressure system.
  • the pipeline leakage can only be detected by relying on the leakage detection line when the coolant has leaked to the specified position inside the server. At this time, the leakage has already occurred and has caused damage to the server, resulting in low safety of the liquid cooling system.
  • the present application provides a liquid cooling heat dissipation system to improve the safety of the liquid cooling heat dissipation system.
  • a liquid cooling heat dissipation system which includes a primary-side cooling unit, a secondary-side cooling unit and a heat exchange unit, the outlet of the primary-side cooling unit is connected to the primary-side inlet of the heat exchange unit, and the primary-side outlet of the heat exchange unit is connected to the inlet of the primary-side cooling unit;
  • the secondary-side cooling unit includes a pump-driven unit, a static pressure water tank and a load unit, the inlet of the pump-driven unit is connected to the outlet of the load unit, the outlet of the pump-driven unit is connected to the static pressure water tank, the static pressure water tank is connected to the atmosphere, the static pressure water tank is connected to the secondary-side inlet of the heat exchange unit, and the secondary-side outlet of the heat exchange unit is connected to the inlet of the load unit, wherein the pump-driven unit is a water pump for pumping water from its inlet side.
  • the secondary side cooling unit includes a secondary side liquid return unit, and the secondary side liquid return unit includes an exhaust tank.
  • the bottom outlet of the static pressure water tank and the outlet of the load unit are both connected to the top inlet of the exhaust tank, and the bottom outlet of the exhaust tank is connected to the inlet of the pump drive unit.
  • a pressure-stabilizing exhaust valve is provided on the top of the exhaust tank.
  • an exhaust stabilizing pressure sensor is also provided at the top of the exhaust tank, and the exhaust stabilizing pressure sensor is connected to the interior of the exhaust tank.
  • the bottom outlet of the static pressure water tank and the top inlet of the exhaust tank are connected through a secondary bypass return liquid pipeline, and a secondary bypass regulating unit and a secondary bypass check valve are provided on the secondary bypass return liquid pipeline.
  • a system fluid replenishment pipeline is provided between the bottom of the static pressure water tank and the top inlet of the exhaust tank, and a secondary side system fluid replenishment pump and a secondary side system fluid replenishment check valve are provided on the system fluid replenishment pipeline.
  • the top of the static pressure water tank is connected to an automatic water tank refill pipeline and a manual water tank refill pipeline
  • the manual water tank refill pipeline includes a secondary side manual refill on-off valve, a secondary side refill filter and a secondary side water tank refill pump which are connected in sequence, the secondary side manual refill on-off valve is connected to the top of the static pressure water tank, and the secondary side water tank refill pump is connected to the refill water tank; one end of the automatic water tank refill pipeline is connected to the top of the static pressure water tank, and the other end is connected to the pressurized coolant delivery pipeline.
  • a drain pipeline is connected to the bottom of the static pressure water tank, a solenoid valve is provided on the drain pipeline, and an overflow pipeline is connected to the top of the static pressure water tank, and the overflow pipeline is in communication with the drain pipeline.
  • a secondary side water quality automatic detection and monitoring unit is connected to the bottom of the static pressure water tank, and the secondary side water quality automatic detection and monitoring unit is used to detect the water quality status of the secondary side coolant.
  • the pump drive unit includes a first pump drive unit and a second pump drive unit arranged in parallel, and the first pump drive unit and the second pump drive unit both include a secondary side liquid return inlet on-off valve, a secondary side drive pump inlet shock absorber pipe, a secondary side drive pump, a secondary side drive pump outlet shock absorber pipe, a secondary side liquid return one-way valve and a secondary side liquid return outlet on-off valve that are connected in sequence, the secondary side liquid return inlet on-off valve is connected to the bottom outlet of the exhaust tank, and the secondary side liquid return outlet on-off valve is connected to the top of the static pressure water tank.
  • a secondary side liquid return main circuit on-off valve, a secondary side ultraviolet sterilization device, a secondary side liquid return pressure sensor, a secondary side liquid return temperature sensor and a secondary side liquid return flow sensor are sequentially connected between the load unit and the top of the exhaust tank; the secondary side liquid return flow sensor is connected to the top of the exhaust tank, and the secondary side liquid return main circuit on-off valve is connected to the load unit.
  • a secondary side liquid leakage detection device is connected in parallel between the secondary side liquid return pressure sensor and the secondary side liquid return flow sensor, and the secondary side liquid leakage detection device is a liquid bubble detector.
  • the secondary side cooling unit includes a secondary side liquid supply unit, which includes a secondary side liquid supply pressure sensor, three secondary side liquid supply temperature sensors, a secondary side coolant visualization monitoring device and a secondary side liquid supply main on-off valve connected in sequence, the secondary side liquid supply pressure sensor is connected to the secondary side outlet of the heat exchange unit, and the secondary side liquid supply main on-off valve is connected to the load unit.
  • a secondary side liquid supply unit which includes a secondary side liquid supply pressure sensor, three secondary side liquid supply temperature sensors, a secondary side coolant visualization monitoring device and a secondary side liquid supply main on-off valve connected in sequence
  • the secondary side liquid supply pressure sensor is connected to the secondary side outlet of the heat exchange unit
  • the secondary side liquid supply main on-off valve is connected to the load unit.
  • the secondary side liquid supply pressure sensor includes a secondary side liquid supply inlet pressure sensor and a secondary side liquid supply outlet pressure sensor, and a secondary side first liquid supply module and a secondary side second liquid supply module arranged in parallel are connected between the secondary side liquid supply inlet pressure sensor and the secondary side liquid supply outlet pressure sensor.
  • the first liquid supply module and the second liquid supply module on the secondary side both include a secondary side inlet on-off valve, a secondary side drain and water quality sampling valve, a secondary side filter, and a secondary side outlet on-off valve which are connected in sequence.
  • the secondary side inlet on-off valve is connected to the secondary side liquid supply inlet pressure sensor, and the secondary side outlet on-off valve is connected to the secondary side liquid supply outlet pressure sensor.
  • the primary side cooling unit includes a primary side liquid supply unit and a primary side refrigeration machine pump drive device
  • the primary side liquid supply unit includes a primary side liquid supply main line on-off valve, a primary side ultraviolet sterilization device, a primary side liquid supply temperature sensor, a primary side liquid supply pressure sensor, and a primary side liquid supply automatic exhaust valve connected in sequence
  • the primary side liquid supply main line on-off valve is connected to the outlet of the primary side refrigeration machine pump drive device
  • the primary side liquid supply automatic exhaust valve is connected to the primary side inlet of the heat exchange unit.
  • the primary side liquid supply pressure sensor includes a primary side inlet pressure sensor and a primary side outlet pressure sensor, and a primary side first liquid supply module and a primary side second liquid supply module arranged in parallel are connected between the primary side inlet pressure sensor and the primary side outlet pressure sensor, and the primary side first liquid supply module and the primary side second liquid supply module both include a primary side inlet on-off valve, a primary side drain and water quality sampling valve, a primary side filter and a primary side outlet on-off valve connected in sequence, the primary side inlet on-off valve is communicated with the primary side inlet pressure sensor, and the primary side outlet on-off valve is communicated with the primary side outlet pressure sensor.
  • the primary side cooling unit includes a primary side liquid return unit, which includes a primary side liquid return main circuit on-off valve, a primary side coolant visualization monitoring device, a primary side coolant flow sensor, a primary side liquid return temperature sensor, a primary side liquid return pressure sensor and a primary side coolant regulating device connected in sequence, the primary side liquid return main circuit on-off valve is connected to the inlet of the primary side refrigeration machine pump drive device, and the primary side coolant regulating device is connected to the primary side outlet of the heat exchange unit.
  • a primary side liquid return unit which includes a primary side liquid return main circuit on-off valve, a primary side coolant visualization monitoring device, a primary side coolant flow sensor, a primary side liquid return temperature sensor, a primary side liquid return pressure sensor and a primary side coolant regulating device connected in sequence
  • the primary side liquid return main circuit on-off valve is connected to the inlet of the primary side refrigeration machine pump drive device
  • the primary side coolant regulating device is connected to the primary side outlet of the heat exchange unit.
  • the liquid cooling system further includes an external tube leakage detection device, and the external tube leakage detection device includes a resistance sensor.
  • the primary-side chiller pump drive device includes an outdoor chiller, a primary-side coolant drive pump, a constant-pressure water replenishment device, and an automatic dosing device.
  • liquid cooling heat dissipation system comprising:
  • a pump drive unit used to perform a water pumping operation on the pipeline on the inlet side of the pump drive unit so that the pipeline in the secondary cooling unit flowing from the static pressure water tank to the pump drive unit is in a negative pressure state, so as to form a negative pressure pipeline;
  • a static pressure water tank connected to the external atmospheric pressure, used to establish a pressure difference between the external atmospheric pressure and the negative pressure in the negative pressure pipeline, so as to establish a circulating flow power of the coolant in the secondary cooling unit through the pressure difference;
  • the load unit is used to transport the low-temperature coolant to the load under the circulating flow power and form a high-temperature coolant after performing heat exchange with the load.
  • system further comprises:
  • a secondary side liquid return temperature sensor is used for the temperature value of the secondary side liquid return unit, and a temperature feedback mechanism is established through the collected temperature value, the preset temperature value and the pump drive unit; in response to the temperature value of the secondary side liquid return temperature sensor being higher than the preset temperature value, the pumping power of the pump drive unit is increased to reduce the negative pressure of the negative pressure pipeline; and the circulating flow power is increased by increasing the pressure difference to further increase the flow rate in the secondary side cooling unit pipeline, so that the temperature value of the secondary side liquid return temperature sensor is lower than the preset temperature value.
  • system further comprises:
  • the secondary side bypass regulating unit is used to adjust the valve opening of the secondary side bypass regulating unit in response to the coolant demand of the load unit being lower than the minimum flow rate on the outlet side of the pump drive unit so that the flow rate on the outlet side of the pump drive unit exceeding the coolant demand of the load unit flows to the exhaust tank and returns to the inlet side of the pump drive unit.
  • the pump drive unit pumps water from the pipeline on its inlet side, so that the pipeline between the bottom outlet of the static pressure water tank and the inlet of the pump drive unit is in a negative pressure state, forming a negative pressure pipeline;
  • the static pressure water tank stores coolant, and the static pressure water tank is connected to the outside atmosphere;
  • the pressure difference between the outside atmospheric pressure and the negative pressure of the load pipeline, the pressure difference establishes the circulation flow power of the coolant in the secondary cooling unit, and the secondary negative pressure pipeline is always in a negative pressure state.
  • the negative pressure pipeline in a negative pressure state can effectively reduce the leakage of coolant in the secondary cooling unit pipeline, and effectively improve the safety of the liquid cooling and heat dissipation system and the data center.
  • FIG1 is a system structure diagram of a liquid cooling and heat dissipation system provided in an embodiment of the present application
  • FIG. 2 is a structural diagram of a primary cooling unit (a primary liquid supply unit and a primary liquid return unit) of a liquid cooling and heat dissipation system provided in an embodiment of the present application;
  • FIG. 3 is a structural diagram of a secondary side liquid supply unit of a liquid cooling and heat dissipation system provided in an embodiment of the present application;
  • FIG. 4 is a structural diagram of a secondary side liquid return unit of a liquid cooling and heat dissipation system provided in an embodiment of the present application;
  • FIG5 is a structural diagram of a static pressure water tank of a liquid cooling and heat dissipation system provided in an embodiment of the present application
  • FIG6 is a structural diagram of an exhaust tank of a liquid cooling and heat dissipation system provided in an embodiment of the present application.
  • FIG. 7 is a structural diagram of a pump drive unit of a liquid cooling and heat dissipation system provided in an embodiment of the present application.
  • FIG8 is a flow chart of a liquid cooling method according to an embodiment of the present application.
  • Primary cooling unit 101. Primary liquid supply unit; 102. Primary cooling machine pump drive device; 103. Primary liquid return unit; 104. Primary liquid supply main on-off valve; 105. Primary ultraviolet sterilization device; 106. Primary liquid supply temperature sensor; 107. Primary liquid supply automatic exhaust valve; 108. Primary inlet pressure sensor; 109. Primary outlet pressure sensor; 110. Primary first liquid supply module; 111.
  • Secondary side second liquid supply module 112, primary side inlet on-off valve; 113, primary side drain and water quality sampling valve; 114, primary side filter; 115, primary side outlet on-off valve; 116, primary side return liquid main on-off valve; 117, primary side coolant visual monitoring device; 118, primary side coolant flow sensor; 119, primary side return liquid temperature sensor; 120, primary side return liquid pressure sensor; 121, primary side coolant regulating device; 2.
  • the existing coolant circulation pipeline is a positive pressure system, which uses positive pressure to drive the coolant to provide power for the coolant circulation. That is, the pressure in the coolant circulation pipeline is greater than the external atmospheric pressure. It relies on the pressure generated by the continuous rotation of the water pump in the pump-driven heat exchange system to drive the coolant to circulate continuously in the coolant circulation pipeline.
  • the existing coolant leakage detection and remedial measures are not ideal. The pipeline leakage can only be detected by relying on the leakage detection line when the coolant has leaked to the specified position inside the server. At this time, the leakage has already occurred and has caused damage to the server.
  • the pump-driven heat exchange system has no effective measures to block pipeline leakage.
  • the pump-driven heat exchange system can only operate according to the set operating parameters. There is no self-sensing device, and it is impossible to obtain the actual operating status of the system in time, and it is impossible to automatically adjust the equipment operating status according to the system usage requirements, including but not limited to the filter status sensing and judgment function, the heat exchanger status sensing and judgment function, the system automatic liquid replenishment function and the active overflow function.
  • Figure 1 is a system structure diagram of a liquid cooling system provided in an embodiment of the present application.
  • the liquid cooling system includes a primary-side cooling unit 1, a secondary-side cooling unit 2 and a heat exchange unit 3.
  • the outlet of the primary-side cooling unit 1 is connected to the primary-side inlet of the heat exchange unit 3, and the primary-side outlet of the heat exchange unit 3 is connected to the inlet of the primary-side cooling unit 1;
  • the outlet of the secondary-side cooling unit 2 is connected to the secondary-side inlet of the heat exchange unit 3, and the inlet of the secondary-side cooling unit 2 is connected to the secondary-side outlet of the heat exchange unit 3.
  • the working principle of the liquid cooling heat dissipation system is as follows: the coolant (low-temperature coolant) generated by the primary cooling unit 1 flows into the primary inlet of the heat exchange unit 3 through the outlet of the primary cooling unit 1, and the high-temperature coolant formed by the heat exchange between the coolant (low-temperature coolant) of the secondary cooling unit 2 and the load enters the secondary inlet of the heat exchange unit 3 through the outlet of the secondary cooling unit 2.
  • the primary coolant (low-temperature coolant) entering the heat exchange unit 3 exchanges heat with the secondary high-temperature coolant entering the heat exchange unit 3, so that the primary coolant entering the heat exchange unit 3 becomes the high-temperature coolant, and the high-temperature coolant is then converted into the coolant (low-temperature coolant) through the primary cooling unit 1; so that the secondary high-temperature coolant entering the heat exchange unit 3 becomes the coolant (low-temperature coolant), and the coolant (low-temperature coolant) exchanges heat with the load to form the high-temperature coolant, and the cycle is repeated to achieve the cooling of the load by the liquid cooling heat dissipation system.
  • the heat exchange unit 3 is composed of a brazed integrated plate heat exchanger, which is used for heat exchange between the primary side cooling unit 1 and the secondary side cooling unit 2.
  • the heat exchange unit 3 is composed of a brazed integrated plate heat exchanger, which is used for heat exchange between the primary side cooling unit 1 and the secondary side cooling unit 2.
  • the high-temperature coolant in the secondary side cooling unit 2 is converted into low-temperature coolant
  • the low-temperature coolant in the primary side cooling unit 1 is converted into high-temperature coolant, ultimately realizing the transfer and conversion of the heat generated by the load unit 202 (secondary side server and other loads) to the primary side cooling unit 1.
  • FIG. 2 is a structural diagram of a primary-side cooling unit (including a primary-side liquid supply unit) of a liquid-cooled heat dissipation system provided in an embodiment of the present application.
  • the primary cooling unit 1 includes a primary chiller pump drive device 102, a primary liquid supply unit 101 and a primary liquid return unit 103.
  • the primary chiller pump drive device 102 uses an outdoor chiller to provide the entire liquid cooling system with a cold source, that is, a coolant, such as water, ethylene glycol, etc.
  • the coolant provided by the primary chiller pump drive device 102 is transported to the heat exchange unit 3 through the primary liquid supply unit 101.
  • the primary coolant in the heat exchange unit 3 exchanges heat with the secondary high-temperature coolant and then returns to the primary chiller pump drive device 102 through the primary liquid return unit 103.
  • the primary chiller pump drive device 102 includes a primary coolant drive pump, which provides flow power for the coolant in the primary liquid supply unit 101 and the primary liquid return unit 103, thereby realizing the circulation of the primary coolant unit.
  • the primary side liquid supply unit 101 includes a primary side liquid supply main line on-off valve 104, a primary side ultraviolet sterilization device 105, a primary side liquid supply temperature sensor 106, a primary side inlet pressure sensor 108, a primary side outlet pressure sensor 109, and a primary side liquid supply automatic exhaust valve 107, which are connected in sequence.
  • the outlet of 102 is connected, and the primary side liquid supply automatic exhaust valve 107 is connected to the primary side inlet of the heat exchange unit 3.
  • the primary liquid supply main line on-off valve is used to realize the overall on-off between the primary side liquid supply unit 101 and the primary side chiller pump drive device 102, so as to shut down the liquid supply main line when the subsequent pipeline related parts need to be maintained and the primary side chiller pump drive device 102 is moved as a whole.
  • the primary side ultraviolet sterilization device 105 uses ultraviolet sterilization technology to actively disinfect the microorganisms and bacteria in the coolant of the primary side cooling unit 1, to prevent the coolant water quality from polluting the coolant circulation pipeline due to excessive microorganisms and bacteria in the coolant of the primary side cooling unit 1, or the corrosion damage of the liquid cooling server caused by excessive microorganisms and bacteria, thereby improving the water quality of the liquid cooling system.
  • the primary side liquid supply temperature sensor 106 is used to read and output the temperature of the primary side liquid supply unit 101 pipeline, and output the temperature of the primary side liquid supply unit 101 pipeline to the primary side chiller pump drive device 102, so that the control system (not shown in the figure) can adjust the primary side system operation state through the primary side chiller pump drive device 102 according to specific use requirements, such as: when the temperature value obtained by the primary side liquid supply temperature sensor 106 is higher than the preset temperature value, the control system increases the power of the primary side coolant drive pump in the primary side chiller pump drive device 102 or increases the cooling capacity of the outdoor chiller in the primary side chiller pump drive device 102, so as to reduce the temperature value obtained by the primary side liquid supply temperature sensor 106 to within the preset temperature value.
  • the primary side liquid supply pressure sensor is used to detect the coolant pressure on the primary side liquid supply unit 101 pipeline.
  • the primary side liquid supply automatic exhaust valve 107 is used to automatically discharge the gas mixed in the pipeline of the primary side liquid supply unit 101, avoiding the occurrence of cavitation damage to the pipeline caused by the presence of gas in the pipeline, thereby improving the safety of the liquid cooling system.
  • the primary side liquid supply pressure sensor includes a primary side inlet pressure sensor 108 (located on the inlet side of the primary side filter 114) and a primary side outlet pressure sensor 109 (located on the outlet side of the primary side filter 114).
  • a primary side first liquid supply module 110 and a primary side second liquid supply module 111 arranged in parallel are connected between the primary side inlet pressure sensor 108 and the primary side outlet pressure sensor 109.
  • the primary side first liquid supply module 110 and the primary side second liquid supply module 111 both include a primary side inlet on-off valve 112, a primary side drain and water quality sampling valve 113, a primary side filter 114 and a primary side outlet on-off valve 115 connected in sequence.
  • the primary side inlet on-off valve 112 is connected to the primary side inlet pressure sensor 108
  • the primary side outlet on-off valve 115 is connected to the primary side outlet pressure sensor 109.
  • the primary side filter 114 is located between the primary side inlet pressure sensor 108 and the primary side outlet pressure sensor 109.
  • the primary side inlet pressure sensor 108 and the primary side outlet pressure sensor 109 together constitute a filter element status monitoring unit of the primary side filter 114.
  • the status monitoring operation of the primary side filter 114 is realized by the difference between the primary side inlet pressure and the primary side outlet pressure. When the pressure difference between the two is greater than the preset pressure difference, it indicates that the primary side filter 114 is in a blocked state, and the control system automatically reminds the relevant maintenance personnel to perform operations such as cleaning and replacing the filter element of the primary side filter 114.
  • the pipeline of the first liquid supply module 110 on the primary side is cut off through the primary side inlet on-off valve 112 and the primary side outlet on-off valve 115 of the first liquid supply module 110 on the primary side, and the system operates normally through the second liquid supply module 111 on the primary side;
  • the pipeline of the first liquid supply module 110 on the primary side is cut off through the primary side inlet on-off valve 112 and the primary side outlet on-off valve 115 of the first liquid supply module 110 on the primary side, and the system operates normally through the second liquid supply module 111 on the primary side;
  • the primary side inlet on-off valve 112 and the primary side outlet on-off valve 115 cut off the pipeline of the primary side second liquid supply module 111, and the primary side first liquid supply module 110 operates normally.
  • the primary side drain valve and the water quality sampling valve realize the discharge operation of the coolant in the primary side filter pipeline assembly.
  • the primary side first liquid supply module 110 and the primary side second liquid supply module 111 cooperate to realize the cleaning and replacement of the filter element and the maintenance of the pipeline without stopping the primary side chiller pump drive device 102, thereby improving the maintenance efficiency and reducing the maintenance cost.
  • the primary side drain valve and the water quality sampling valve can realize the convenient sampling operation of the coolant in the primary side cooling unit 1, thereby realizing the sampling and inspection of the coolant in the primary side cooling unit 1 without stopping the machine.
  • the primary side filter 114 adopts a stainless steel flushable filter element design, which can complete the removal operation of particulate matter in the coolant of the primary side cooling unit 1 to ensure that the water quality of the coolant in the primary side cooling unit 1 meets the use requirements of the primary side cooling unit 1, and further improve the water quality of the coolant.
  • FIG. 2 is a structural diagram of a primary-side cooling unit (including a primary-side liquid return unit) of a liquid-cooled heat dissipation system provided in an embodiment of the present application.
  • the primary side liquid return unit 103 is responsible for conveying the primary side high temperature coolant passing through the heat exchange unit 3 to the primary side chiller pump drive device 102 for cooling operation.
  • the primary side liquid return unit 103 includes a primary side liquid return main circuit on-off valve 116, a primary side coolant visual monitoring device 117, a primary side coolant flow sensor 118, a primary side liquid return temperature sensor 119, a primary side liquid return pressure sensor 120 and a primary side coolant regulating device 121 connected in sequence.
  • the primary side liquid return main circuit on-off valve 116 is connected to the inlet of the primary side chiller pump drive device 102, and the primary side coolant regulating device 121 is connected to the primary side outlet of the heat exchange unit 3.
  • the primary return liquid main line on-off valve is used for the overall on-off between the primary side return liquid unit 103 and the primary side chiller pump drive device 102, so as to shut down the return liquid main line when the relevant parts of the primary side return liquid unit 103 need to be maintained and the primary side chiller pump drive heat exchange device is moved as a whole.
  • the primary side coolant visualization monitoring device 117 is used to monitor the circulation status of the coolant in the primary side cooling unit 1.
  • the primary side coolant visualization monitoring device 117 adopts a transparent tempered glass design, so that the operator can intuitively and clearly view the coolant circulation status at zero distance, including but not limited to the turbidity of the water, impurities and bubbles in the water, and other related states, thereby improving the water quality monitoring capability of the liquid cooling system.
  • the primary side coolant flow sensor 118 is used to monitor the coolant flow of the primary side cooling unit 1, and can output the coolant flow data of the primary side cooling unit 1 and upload it to the control system, so that the control system can grasp the coolant flow information of the primary side cooling unit 1 in real time and make relevant adjustments according to actual needs, that is, when the coolant flow collected by the primary side coolant flow sensor 118 does not reach the corresponding preset value, the power of the primary side coolant drive pump in the primary side chiller pump drive heat exchange device is increased, or when the coolant flow collected by the primary side coolant flow sensor 118 exceeds the corresponding preset value, the power of the primary side coolant drive pump in the primary side chiller pump drive heat exchange device is reduced.
  • the working principle of the primary side return liquid temperature sensor 119 can refer to the primary side supply liquid temperature sensor 106.
  • the primary side return liquid pressure sensor 120 is used to collect the return liquid pressure of the primary side return liquid unit 103 pipeline, which is equivalent to the primary side outlet pressure value of the heat exchange unit 3.
  • the primary side supply liquid pressure sensor is used to collect the supply liquid pressure of the primary side supply liquid unit 101, which is equivalent to the primary side inlet pressure value of the heat exchange unit 3.
  • the primary side inlet pressure value of the heat exchange unit 3 is compared with the primary side outlet pressure value to obtain the pressure difference between the primary side inlet and outlet of the heat exchange unit 3.
  • the working state of the heat exchange unit 3 can be judged by the pressure difference.
  • the return liquid pressure collected by the primary side return liquid pressure sensor 120 can be used by the control system to adjust the operating state of the primary side cooling unit 1 according to specific usage requirements, such as adjusting the primary side chiller according to actual needs.
  • the primary side coolant regulating device 121 adopts an electric proportional valve design, which can adjust the coolant pressure, flow rate, temperature and other related parameters of the primary side cooling unit 1 by adjusting the valve opening, so as to meet the specific use requirements of the primary side cooling unit 1.
  • FIG. 3 is a structural diagram of a secondary side liquid supply unit of a liquid cooling and heat dissipation system provided in an embodiment of the present application.
  • the secondary cooling unit 2 includes a secondary liquid supply unit 201, a secondary liquid return unit 203 and a load unit 202.
  • the secondary cooling unit 2 uses a pump drive unit 204 to drive the circulation of the coolant in the pipeline of the secondary cooling unit 2, and continuously transfers the heat generated by the load unit 202 such as the server and the switch to the heat exchange unit 3 to complete the heat exchange between the secondary cooling unit 2 and the primary cooling unit 1.
  • the secondary liquid supply unit 201 includes a secondary liquid supply pressure sensor, three secondary liquid supply temperature sensors 238, a secondary coolant visual monitoring device 239 and a secondary liquid supply main on-off valve 240 connected in sequence, the secondary liquid supply inlet pressure sensor 241 is connected to the secondary outlet of the heat exchange unit 3, and the secondary liquid supply main on-off valve 240 is connected to the load unit 202.
  • the secondary side liquid supply temperature sensor 238 adopts a one-in-one and two-backup design scheme, which is used for reading and outputting the temperature of the coolant (low-temperature coolant) in the pipeline of the secondary side liquid supply unit 201.
  • the coolant temperature collected by the secondary side liquid supply temperature sensor 238 is output to the control system so that the control system can adjust the operating state of the secondary side liquid supply unit 201 according to specific usage requirements.
  • specific adjustment methods please refer to the primary side liquid supply temperature sensor 106. Different data centers have different levels and different reliabilities.
  • the function of the secondary side coolant visualization monitoring device 239 refers to the description of the primary side coolant visualization monitoring device 117.
  • the secondary side liquid supply main line on-off valve 240 is used to realize the overall on-off between the secondary side liquid supply unit 201 and the load unit 202, so that the liquid supply main line can be shut down when the related parts of the secondary side liquid supply unit 201 need to be maintained and the primary side chiller pump drive device 102 is moved as a whole, thereby improving maintenance efficiency.
  • the load unit 202 is composed of liquid cooling products such as liquid cooling servers and liquid cooling cabinets.
  • the load unit 202 will generate a lot of heat during operation and heat the low-temperature coolant provided by the secondary side liquid supply unit 201 to the high-temperature coolant delivered by the secondary side return liquid unit 203 through the cold plate assembly in the liquid cooling product, thereby completing the heat transfer conversion and heat dissipation operation of the liquid cooling product.
  • the secondary side liquid supply pressure sensor includes a secondary side liquid supply inlet pressure sensor 241 and a secondary side liquid supply outlet pressure sensor 242, and a secondary side first liquid supply module 243 and a secondary side second liquid supply module 244 arranged in parallel are connected between the secondary side liquid supply inlet pressure sensor 241 and the secondary side liquid supply outlet pressure sensor 242.
  • the secondary side first liquid supply module 243 and the secondary side second liquid supply module 244 both include a secondary side inlet on-off valve 245, a secondary side drain and water quality sampling valve 246, a secondary side filter 247, and a secondary side outlet on-off valve 248 connected in sequence.
  • the secondary side inlet on-off valve 245 is connected to the secondary side liquid supply inlet pressure sensor 241, and the secondary side outlet on-off valve 248 is connected to the secondary side liquid supply outlet pressure sensor 242.
  • the working principles of the secondary side first liquid supply module 243 and the secondary side second liquid supply module 244 are consistent with those of the primary side first liquid supply module 110 and the primary side second liquid supply module 111. For specific working methods, please refer to the description of the primary side first liquid supply module 110 and the primary side second liquid supply module 111.
  • FIG. 4 is a structural diagram of a secondary side liquid return unit of a liquid cooling heat dissipation system provided in an embodiment of the present application.
  • the secondary side liquid return unit 203 includes a pump drive unit 204 and a static pressure water tank 205.
  • the inlet of the pump drive unit 204 is connected to the load
  • the outlet of unit 202 is connected, the outlet of the pump drive unit 204 is connected to the top of the static pressure water tank 205, the top of the static pressure water tank 205 is connected to the atmosphere, the bottom of the static pressure water tank 205 is provided with a bottom outlet, the bottom outlet of the static pressure water tank 205 is connected to the secondary side inlet of the heat exchange unit 3, the secondary side outlet of the heat exchange unit 3 is connected to the inlet of the load unit 202, wherein the pump drive unit 204 is a water pump for pumping water from its inlet side.
  • the secondary side liquid return unit 203 uses the pump drive unit 204 to continuously transport the secondary side high temperature coolant that has completed heat exchange with the load unit 202 to the heat exchange unit 3, so as to complete the cooling operation of the secondary side high temperature coolant through the heat exchange unit 3, wherein the pump drive unit 204 provides driving force for the coolant in the pipeline of the secondary side cooling unit 2, and the pump drive unit 204 includes a secondary side drive pump 228, and the secondary side drive pump 228 is a common water pump, and the secondary side drive pump 228 reduces the pressure on its inlet side, so that The pipeline between the inlet side of the secondary side driving pump 228 and the bottom outlet of the static water tank 205 is in a negative pressure state, thereby forming a negative pressure pipeline.
  • the static water tank 205 is connected to the outside atmosphere through the atmospheric communication pipeline 250.
  • the pressure of the static water tank 205 is greater than the pressure of the negative pressure pipeline.
  • a pressure difference is formed between the atmospheric pressure and the negative pressure.
  • the pressure difference establishes the circulating flow power of the coolant of the secondary side cooling unit 2. Therefore, under the action of the circulating flow power, the coolant of the static water tank 205 is transported to the negative pressure pipeline.
  • the atmospheric communication pipeline 250 at the top of the static water tank 205 is used for the pressure relief operation of the static water tank 205.
  • a dustproof end cap is provided at the top to prevent foreign particles from entering the water tank and contaminating the secondary side coolant in the static water tank 205.
  • a secondary side main circuit check valve 249 is provided between the bottom outlet of the static water tank 205 and the secondary side inlet of the heat exchange unit 3 to prevent the high temperature coolant from flowing back.
  • the load unit (202) is used to perform heat exchange between the low-temperature coolant and the load to form a high-temperature coolant.
  • the pressure difference established between the external atmospheric pressure and the negative pressure in the negative pressure pipeline enables the negative pressure pipeline to always operate in a negative pressure state, which can effectively reduce the leakage of the coolant and improve the safety of the liquid cooling system and the data center.
  • the secondary side cooling unit 2 includes a secondary side liquid return unit 203
  • the secondary side liquid return unit 203 includes an exhaust tank 206
  • the bottom outlet of the static pressure water tank 205 and the outlet of the load unit 202 are both connected to the top inlet of the exhaust tank 206
  • the bottom outlet of the exhaust tank 206 is connected to the inlet of the pump drive unit 204
  • a pressure-stabilizing exhaust valve 207 is provided at the top of the exhaust tank 206.
  • the coolant of the secondary cooling unit 2 will be mixed with gas.
  • the coolant in the pipeline between the bottom outlet of the static water tank 205 and the top inlet of the exhaust tank 206 is mixed with gas
  • the coolant in the pipeline between the bottom outlet of the static water tank 205 and the top inlet of the exhaust tank 206 flows into the exhaust tank 206, and the mixed gas will also enter the exhaust tank 206 and be discharged through the pressure-stabilizing exhaust valve 207;
  • the secondary high-temperature coolant generated after heat exchange through the load unit 202 is mixed with gas
  • the secondary high-temperature coolant generated after heat exchange through the load unit 202 enters the exhaust tank 206, and the mixed gas will also enter the exhaust tank 206 and be discharged through the pressure-stabilizing exhaust valve 207, thereby avoiding the occurrence of problems such as excessive noise and vibration caused by gas in the pipeline, pipeline damage, and cavitation damage to the water pump blades.
  • an exhaust stabilizing pressure sensor 208 is further provided at the top of the exhaust tank 206, and the exhaust stabilizing pressure sensor 208 is connected to the interior of the exhaust tank 206.
  • the bottom outlet of the static pressure water tank 205 and the top inlet of the exhaust tank 206 are connected through a secondary side bypass liquid return pipeline 209, and a secondary side bypass regulating unit 210 and a secondary side bypass check valve 211 are provided on the secondary side bypass liquid return pipeline 209.
  • the secondary side high temperature coolant that flows through the load unit 202 and completes the heat exchange and flows through the secondary side bypass return liquid pipeline 209 The secondary side high temperature coolant enters the secondary side exhaust tank from the top inlet of the exhaust tank.
  • the exhaust pressure stabilizing pressure sensor 208 is used to collect the air pressure inside the exhaust tank 206. When the air pressure inside the exhaust tank 206 is lower than the threshold value, it means that there is less coolant inside the exhaust tank 206.
  • the coolant flow entering the exhaust tank 206 can be adjusted, such as increasing the rotation speed of the secondary side drive pump 228, and/or increasing the coolant flow flowing into the exhaust tank 206 through the secondary side bypass return liquid pipeline 209 to increase the air pressure inside the exhaust tank 206; when the air pressure inside the exhaust tank 206 is higher than the threshold value, it means that there is more coolant inside the exhaust tank 206.
  • the coolant flow entering the exhaust tank 206 can be adjusted, such as reducing the rotation speed of the secondary side drive pump 228, and/or reducing the coolant flow flowing into the exhaust tank 206 through the secondary side bypass return liquid pipeline 209 to reduce the air pressure inside the exhaust tank 206.
  • valve opening of the secondary side bypass regulating unit 210 can be automatically adjusted according to actual needs to adjust the bypass flow. Furthermore, the flow rate of the coolant entering the exhaust tank 206 from the secondary bypass return liquid pipeline 209 is adjusted by adjusting the opening of the valve by the secondary bypass regulating unit 210 on the secondary bypass return liquid pipeline 209.
  • a secondary bypass check valve 211 is also provided on the secondary bypass return liquid pipeline 209, and the secondary bypass check valve 211 is used to prevent the coolant from flowing back.
  • the opening of the secondary-side bypass regulating unit 210 of the secondary-side liquid return bypass pipeline is increased to allow the coolant flowing from the pump-driven unit 204 to the static pressure water tank 205 to flow directly back to the inlet side of the pump-driven unit 204 through the exhaust tank 206, which is equivalent to connecting the liquid outlet and the liquid inlet of the pump-driven unit 204 to return the coolant exceeding the coolant demand of the load unit 202 to the pump-driven unit 204, so as to avoid the coolant exceeding the coolant demand of the load unit 202 overflowing through the static pressure water tank 205 and causing a waste of coolant.
  • a system fluid replenishment pipeline 212 is provided between the bottom of the static pressure water tank 205 and the top inlet of the exhaust tank 206 , and a secondary side system fluid replenishment pump 213 and a secondary side system fluid replenishment check valve 214 are provided on the system fluid replenishment pipeline 212 .
  • the system refill pipeline 212 is composed of a secondary system refill pump 213, a secondary system refill check valve 214, and related pipelines. For example, if the total number of servers in the data center increases, the load units 202 increase, and the required coolant increases, then the coolant in the static pressure water tank 205 can be replenished into the pipeline of the secondary cooling unit 2 through the secondary system refill pump 213 to meet the coolant demand of the load end.
  • the secondary system refill check valve 214 prevents the coolant entering the pipeline from flowing back.
  • a parallel coolant branch is established between the load unit 202 and the secondary side return liquid main circuit on-off valve 232, and on-off valves are set at both ends of the branch.
  • the branch is used to install coolant heat dissipation pipelines for the newly added server loads without stopping the liquid cooling system when the total number of servers increases. At this time, the demand for coolant needs to be increased.
  • the staff sets the number of newly added server loads in the control system.
  • the control system receives the number of servers set by the user and automatically calculates the demand for coolant required for the newly added servers. Then, the control system controls the liquid replenishment pipeline 212 to replenish the required amount of coolant into the exhaust tank 206, which can improve the operating efficiency of the operators and can also add heat dissipation pipelines for new server loads without stopping the system.
  • the top of the static pressure water tank 205 is connected to a water tank automatic liquid replenishment pipeline 215 and a water tank manual liquid replenishment pipeline 216.
  • the water tank manual liquid replenishment pipeline 216 includes a secondary side manual liquid replenishment on-off valve 217, a secondary side liquid replenishment filter 218 and a secondary side water tank replenishment pump 219 which are connected in sequence.
  • the secondary side manual liquid replenishment on-off valve 217 is connected to the top of the static pressure water tank 205, and the secondary side water tank replenishment pump 219 is connected to the replenishment water tank; one end of the water tank automatic liquid replenishment pipeline 215 is connected to the top of the static pressure water tank 205, and the other end is connected to the pressurized coolant delivery pipeline.
  • the coolant replenishment includes two methods: automatic replenishment and manual replenishment.
  • the manual replenishment method includes a water tank manual replenishment pipeline 216.
  • the water tank manual replenishment pipeline 216 consists of a secondary side manual replenishment on-off valve 217, a secondary side replenishment filter 218, a secondary side water tank replenishment pump 219 and a replenishment water tank.
  • One end of the water tank manual replenishment pipeline 216 is connected to the top of the static pressure water tank 205, and the other end is connected to the replenishment water tank.
  • the replenishment water tank is a container for the external pressure-free secondary side coolant.
  • the personnel manually open the secondary side manual replenishment on-off valve 217 and start the secondary side water tank replenishment pump 219 to perform the replenishment operation.
  • the secondary side replenishment filter 218 can filter and clean the replenished coolant to prevent impurities in the coolant from entering the pump-driven heat exchange system.
  • the automatic refilling method includes an automatic refilling pipeline 215 for the water tank, one end of which is connected to the static pressure water tank 205 to obtain the top, and the other end is connected to the external pressurized secondary side coolant delivery pipeline, on which a switch solenoid valve is installed; when the static pressure water tank 205 outputs a refilling demand, its solenoid valve automatically opens, and the secondary side coolant will be automatically delivered to the inside of the water tank using the external pressurized secondary side coolant delivery pipeline, and when the refilling is completed, the solenoid valve automatically closes.
  • a drain pipe 220 is connected to the bottom of the static pressure water tank 205 , a solenoid valve 221 is disposed on the drain pipe 220 , and an overflow pipe 222 is connected to the top of the static pressure water tank 205 , and the overflow pipe 222 is in communication with the drain pipe 220 .
  • the coolant in the static pressure water tank 205 needs to be discharged, so a drain pipe 220 is provided at the bottom of the static pressure water tank 205, and a solenoid valve 221 is provided on the drain pipe 220, and the coolant in the static pressure water tank 205 is discharged through the solenoid valve 221.
  • the overflow pipe 222 can be directly connected to the drain pipe 220, and the overflowed coolant is directly discharged through the drain pipe 220.
  • the overflow pipe 222 is connected to the outlet side of the solenoid valve 221 on the drain pipe 220.
  • the overflow pipe 222 is used for the safe overflow of the static pressure water tank 205, avoiding system failure caused by excessive water, and improving the safety of the liquid cooling system.
  • a secondary side water quality automatic detection and monitoring unit 223 is connected to the bottom of the static pressure water tank 205, and the secondary side water quality automatic detection and monitoring unit 223 is used to detect the water quality status of the secondary side coolant.
  • the bottom of the static pressure water tank 205 is connected to a secondary side water quality automatic detection and monitoring unit 223.
  • the secondary side water quality automatic detection and monitoring unit 223 is used to detect the water quality conditions such as turbidity, conductivity, pH and particle size of the coolant in the secondary side cooling unit 2. It has built-in corresponding sensors to complete related water quality detection work to improve the water quality of the coolant.
  • the pump drive unit 204 includes a first pump drive unit 224 and a second pump drive unit 225 arranged in parallel, and the first pump drive unit 224 and the second pump drive unit 225 both include a secondary side liquid return inlet on-off valve 226, a secondary side drive pump inlet shock absorber pipe 227, a secondary side drive pump 228, a secondary side drive pump outlet shock absorber pipe 229, a secondary side liquid return one-way valve 230 and a secondary side liquid return outlet on-off valve 231 that are connected in sequence, the secondary side liquid return inlet on-off valve 226 is connected to the bottom outlet of the exhaust tank 206, and the secondary side liquid return outlet on-off valve 231 is connected to the top of the static pressure water tank 205.
  • the pump drive unit 204 includes a first pump drive unit 224 and a second pump drive unit 225, and the first pump drive unit 224 and the second pump drive unit 225 are arranged in parallel.
  • the first pump drive unit 224 and the second pump drive unit 225 are both composed of a secondary side liquid return inlet on-off valve 226, a secondary side drive pump inlet shock absorber pipe 227, a secondary side drive pump 228, a secondary side drive pump outlet shock absorber pipe 229, a secondary side liquid return one-way valve 230 and a secondary side liquid return outlet on-off valve 231.
  • the pump drive unit 224 and the second pump drive unit 225 use the secondary drive pump 228 to provide driving force for the circulation of the coolant in the secondary cooling unit 2.
  • the pump drive unit 204 adopts a dual pump drive patrol design with one in use and one in reserve. On the one hand, it is used to ensure that when one of the pump drive units has a problem and needs to be shut down for maintenance, it does not affect the normal operation of the system. On the other hand, it can avoid the occurrence of problems such as motor overheating, thermal attenuation, efficiency reduction and service life reduction caused by long-term operation of a single circuit, and effectively improve the service life and work efficiency of the pump drive unit 204.
  • the secondary drive pump inlet shock absorber pipe 227 and the secondary drive pump outlet shock absorber pipe 229 are used to eliminate the installation error when the secondary drive pump 228 is connected to the pipeline and reduce the vibration impact when the secondary drive pump 228 is running.
  • the secondary side liquid return check valve 230 is used to prevent the secondary side coolant output through the secondary side drive pump 228 from flowing back and causing the drive pump driving force to decrease and the coolant in the static pressure water tank 205 to be sucked back.
  • the secondary side coolant inlet on-off valve and the secondary side coolant outlet on-off valve cooperate to realize the overall on-off of the pump drive unit 204 pipeline, and the two cooperate to realize the maintenance of related parts of the pump drive unit 204 without stopping the liquid cooling system.
  • a secondary side liquid return main circuit on-off valve 232, a secondary side ultraviolet sterilization device 233, a secondary side liquid return pressure sensor 234, a secondary side liquid return temperature sensor 235 and a secondary side liquid return flow sensor 236 are sequentially connected between the load unit 202 and the top of the exhaust tank 206; the secondary side liquid return flow sensor 236 is connected to the top of the exhaust tank 206, and the secondary side liquid return main circuit on-off valve 232 is connected to the load unit 202.
  • the secondary side liquid return main line on-off valve 232 is used to realize the overall on-off between the secondary side liquid return unit 203 and the load unit 202, so that the liquid return main line can be shut down when the related parts of the secondary side liquid return unit 203 need to be maintained and the primary side chiller pump drive device 102 is moved as a whole.
  • the secondary side ultraviolet sterilization device 233 uses ultraviolet sterilization technology to actively disinfect microorganisms and bacteria in the coolant of the secondary side cooling unit 2, and prevent the occurrence of problems such as coolant water quality pollution of the coolant circulation pipeline and corrosion damage to the liquid cooling server caused by excessive microorganisms and bacteria in the coolant of the secondary side cooling unit 2.
  • the secondary side liquid return pressure sensor 234 is used for reading and outputting the liquid return pressure of the secondary side liquid return unit 203 and the pressure on the outlet side of the load unit 202, and outputs the liquid return pressure of the secondary side liquid return unit 203 to the control system.
  • the control system compares this pressure value with the pressure on the inlet side of the load unit 202 measured by the secondary side liquid supply outlet pressure sensor 242. If the pressure difference between the two is large, it indicates that there may be a blockage at the load unit 202. In addition, the control system determines the size of the liquid return pressure value of the secondary side liquid return unit 203.
  • liquid return pressure value of the secondary side liquid return unit 203 is too large, it is necessary to increase the power of the secondary side drive pump 228 to further reduce the negative pressure of the negative pressure pipeline, that is, to further increase the pressure difference between atmospheric pressure and negative pressure.
  • the increased pressure difference can improve the driving ability of the coolant in the secondary side cooling unit 2.
  • a secondary-side liquid leakage detection device 237 is connected in parallel between the secondary-side liquid return pressure sensor 234 and the secondary-side liquid return flow sensor 236 .
  • the secondary side liquid leakage detection device 237 uses a liquid bubble detector to realize the real-time detection function of liquid leakage and pipeline damage of the secondary side cooling unit 2.
  • a liquid bubble detector in the secondary side liquid leakage detection device 237 will be able to quickly detect the pipeline damage information and output it to the control system. The control system will then perform relevant processing operations according to the actual situation.
  • the secondary side liquid leakage detection device 237 Since the secondary side liquid leakage detection device 237 requires a specified coolant pressure when performing leakage detection, the secondary side liquid leakage detection device 237 is connected in parallel to the return liquid pipeline so that the coolant pressure of the pipeline where the secondary side liquid leakage detection device 237 is located is within the specified value.
  • the liquid cooling system further comprises a tube leakage detection device, wherein the tube leakage detection device comprises Includes resistance sensors.
  • the primary cooling unit 1 of the liquid cooling system is still a positive pressure system, so an external leakage detection device is arranged at the location outside the pipeline of the primary cooling unit 1 where leakage is likely to occur, such as using a resistance sensor to sense whether the pipeline is leaking.
  • the secondary cooling unit 2 adopts a negative pressure system, but if the secondary cooling unit 2 has a more serious leakage, such as a large damaged area, the coolant will leak, so an external leakage detection device is arranged at the location of the secondary cooling unit 2 that is prone to leakage, and the leakage detection capability is improved by combining the secondary leakage detection device 237 with the external leakage detection device, so as to further improve the safety of the liquid cooling system.
  • the primary-side chiller pump drive device 102 includes an outdoor chiller, a primary-side coolant drive pump, a constant-pressure water replenishment device, and an automatic dosing device.
  • the primary side chiller pump drive device 102 is composed of an outdoor chiller, a primary side coolant drive pump, a constant pressure water replenishment device and an automatic dosing device.
  • the primary side chiller pump drive device 102 is used to achieve the cooling of the coolant in the primary side cooling unit 1 and the circulation of the coolant.
  • the outdoor chiller uses a compressor, evaporative heat dissipation and other technologies to complete the cooling operation of the coolant in the primary side cooling unit 1.
  • the primary side coolant drive pump provides flow power for the coolant in the primary side cooling unit 1, thereby achieving the circulation of the coolant in the primary side cooling unit 1.
  • Figure 4 is a structural diagram of a secondary side liquid return unit of a liquid cooling system provided in an embodiment of the present application
  • Figure 8 is a method flow chart of a liquid cooling method provided in an embodiment of the present application.
  • the liquid cooling method comprises:
  • the high-temperature coolant flowing through the static pressure water tank 205 flows into the heat exchange unit 3 under the circulation flow power and forms a low-temperature coolant after heat exchange in the heat exchange unit 3;
  • the low-temperature coolant is transported to the load unit 202 and performs heat exchange with the load.
  • the pump drive unit 204 of the present application performs a pumping operation on the pipeline on the inlet side of the pump drive unit 204, so that the pipeline between the bottom outlet of the static pressure water tank 205 and the inlet of the pump drive unit 204 is in a negative pressure state, so the pipeline between the bottom outlet of the static pressure water tank 205 and the inlet of the pump drive unit 204 forms a negative pressure pipeline;
  • the static pressure water tank 205 stores coolant, and the static pressure water tank 205 is connected to the outside atmosphere, so the outside atmospheric pressure and the negative pressure of the negative pressure pipeline produce a pressure difference, and the outside atmospheric pressure is greater than the pressure of the negative pressure pipeline, so the pressure difference generated by the outside atmospheric pressure and the negative pressure of the negative pressure pipeline establishes the circulation flow power of the coolant in the secondary cooling unit 2.
  • the high-temperature coolant in the static pressure water tank 205 is transported to the heat exchange unit 3, and the high-temperature coolant undergoes heat exchange in the heat exchange unit 3 to form a low-temperature coolant.
  • the low-temperature coolant is transported to the load unit 202 under the circulating flow power, and the low-temperature coolant exchanges heat with the load in the load unit 202 to achieve cooling of the load.
  • the pressure difference established by the external atmospheric pressure and the negative pressure in the negative pressure pipeline makes the negative pressure pipeline always work in a negative pressure state, which can effectively reduce the leakage of coolant and improve the safety of liquid cooling system and data center.
  • the method further comprises:
  • the low-temperature coolant after heat exchange in the load unit 202 forms a high-temperature coolant
  • the high-temperature coolant is transported through the pump drive unit 204 and delivered to the static pressure water tank 205 by the circulating flow power.
  • the low-temperature coolant forms a high-temperature coolant after heat exchange with the load in the load unit 202, and then the high-temperature coolant is transported to the pump drive unit 204 under the circulating flow power.
  • the high-temperature coolant on the outlet side of the pump drive unit 204 is a pressurized coolant, and the pressure of the pressurized coolant is greater than the atmospheric pressure. Therefore, the pressurized coolant further flows to the static pressure water tank 205, and the pressurized coolant is depressurized in the static pressure water tank 205, thereby realizing the reciprocating circulation of the coolant in the secondary side cooling unit 2.
  • the method further comprises:
  • a temperature feedback mechanism is established through the temperature value of the secondary side return liquid temperature sensor 235, the preset temperature value and the pump drive unit 204;
  • the circulating flow power is increased by increasing the pressure difference to increase the flow rate in the pipeline of the secondary cooling unit 2, so that the temperature value of the secondary liquid return temperature sensor 235 is lower than the preset temperature value.
  • the secondary side return liquid temperature sensor 235 can monitor the temperature of the high-temperature coolant in the secondary side return liquid unit 203 pipeline in real time.
  • a temperature feedback mechanism is established through the secondary side return liquid temperature sensor 235, the preset temperature value and the pump drive unit 204 to improve the control ability and safety of the control system.
  • the specific working principle is: real-time monitoring of the temperature of the high-temperature coolant in the secondary side return liquid unit 203 pipeline, comparing the temperature of the high-temperature coolant in the secondary side return liquid unit 203 pipeline with the preset temperature value.
  • the pumping power of the pump drive unit 204 is increased to further reduce the negative pressure of the negative pressure pipeline.
  • the pressure difference formed by the external atmospheric pressure and the negative pressure of the negative pressure pipeline will increase.
  • the circulating flow power is increased by the increased pressure difference to further increase the flow rate in the secondary side cooling unit 2 pipeline until the secondary side return liquid temperature sensor 235 reaches the preset temperature value.
  • the power increase operation of the pump drive unit 204 is stopped; if the temperature of the high-temperature coolant in the secondary side return liquid unit 203 pipeline is lower than the preset temperature value (low threshold), the pumping power of the pump drive unit 204 is reduced to further increase the negative pressure of the negative pressure pipeline. At this time, the pressure difference value formed by the external atmospheric pressure and the negative pressure of the negative pressure pipeline will decrease. The circulating flow power is reduced by the reduced pressure difference to further reduce the flow in the secondary side cooling unit 2 pipeline until the temperature value of the secondary side return liquid temperature sensor 235 is higher than the preset temperature value, and the power reduction operation of the pump drive unit 204 is stopped.
  • the flow, temperature, and pressure are in a chain reaction relationship. Increasing the power of the pump drive unit 204 will increase the flow in the pipeline, which will correspondingly increase the pressure and reduce the temperature.
  • a feedback mechanism can also be established through the temperature data collected by the secondary side liquid supply temperature sensor 238, and the specific working principle is the same.
  • the method further comprises:
  • valve opening of the secondary bypass regulating unit 210 is adjusted so that the flow rate on the outlet side of the pump drive unit 204 that exceeds the coolant demand of the load unit 202 flows to the exhaust tank 206 and returns to the inlet side of the pump drive unit 204.
  • cooling liquid demand of the load unit 202 is lower than the minimum flow rate at the outlet of the pump drive unit 204, it means that the load of the load unit 202 is reduced. For example, there were ten servers before and there is only one server now. The cooling liquid demand of element 202 is lower than the minimum flow rate on the outlet side of the pump drive unit 204.
  • valve opening of the secondary side bypass regulating unit 210 is adjusted, and the opening of the secondary side bypass regulating unit 210 of the secondary side return liquid bypass pipeline is increased, so that the cooling liquid flowing to the static pressure water tank 205 through the pump drive unit 204 can be directly returned to the inlet side of the pump drive unit 204 through the exhaust tank 206, which is equivalent to connecting the liquid outlet and the liquid inlet of the pump drive unit 204 to return the cooling liquid in excess of the cooling liquid demand of the load unit 202 to the pump drive unit 204, so as to avoid the cooling liquid in excess of the cooling liquid demand of the load unit 202 overflowing through the static pressure water tank 205 and causing a waste of cooling liquid.
  • 8 may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

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Abstract

本申请涉及液冷技术领域，特别是涉及一种液冷散热系统，包括一次侧冷却单元、二次侧冷却单元和换热单元，一次侧冷却单元的出口与换热单元的一次侧进口相连通，换热单元的一次侧出口与一次侧冷却单元的进口相连通；二次侧冷却单元包括泵驱单元、静压水箱和负载单元，泵驱单元的进口与负载单元的出口相连通，泵驱单元的出口与静压水箱相连通，静压水箱与大气相连通，静压水箱与换热单元的二次侧进口相连通，换热单元的二次侧出口与负载单元的进口相连通，其中，泵驱单元为对其进口侧进行抽水的抽水泵，从而提高了液冷散热系统的安全性。

Description

液冷散热系统
相关申请的交叉引用
本申请要求于2023年8月8日提交中国专利局，申请号为202310991519.X，申请名称为“液冷散热系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及液冷技术领域，特别是涉及一种液冷散热系统。
背景技术
随着信息化和数据化技术及其应用的快速发展，服务器核心部件CPU、GPU等部件性能正显著提升，其功耗及其产热量也随之成倍增长，因此传统风冷散热技术已经无法满足服务器及数据中心机房散热需求。为进一步提高服务器及数据中心机房的散热能力，目前常用较为先进的液冷技术对服务器及数据中心机房进行散热，目前的服务器液冷技术主要有浸没式液冷和冷板式液冷两种，浸没式液冷直接将服务器浸入专用冷却液中进行服务器散热处理，由于其综合使用成本高、维护困难等原因，其应用规模较小。冷板式液冷利用与服务器产热部件(CPU、GPU等部件)直接接触的液冷冷板进行散热，其散热原理为冷却液泵驱换热系统水泵驱动冷却液(水、乙二醇等)持续不断流过与冷板内部通道，冷却液在通道内通过冷板板壁与服务器产热部件进行热交换，从而带走服务器产热部件运行产生的热量达到散热目的。
目前服务器液冷技术中的冷却液循环管路为正压系统，当管路出现破损或接头出现松动时，仅能在冷却液已泄露到服务器内部指定位置依靠漏液检测线检测管路泄露，此时泄露已发生且已造成服务器损坏，导致液冷散热系统的安全性较低。
发明内容
基于此，本申请提供一种液冷散热系统，以提高液冷散热系统的安全性。
一方面，提供一种液冷散热系统，所述液冷散热系统包括一次侧冷却单元、二次侧冷却单元和换热单元，所述一次侧冷却单元的出口与所述换热单元的一次侧进口相连通，所述换热单元的一次侧出口与所述一次侧冷却单元的进口相连通；所述二次侧冷却单元包括泵驱单元、静压水箱和负载单元，所述泵驱单元的进口与所述负载单元的出口相连通，所述泵驱单元的出口与所述静压水箱相连通，所述静压水箱与大气相连通，所述静压水箱与所述换热单元的二次侧进口相连通，所述换热单元的二次侧出口与所述负载单元的进口相连通，其中，所述泵驱单元为对其进口侧进行抽水的抽水泵。
在一些实施例中，所述二次侧冷却单元包括二次侧回液单元，所述二次侧回液单元包括排气灌，所述静压水箱的底部出口、所述负载单元的出口均与所述排气灌的顶部进口相连通，所述排气灌的底部出口与所述泵驱单元的进口相连通，所述排气灌的顶部设置有稳压排气阀。
在一些实施例中，所述排气灌的顶部还设置有排气稳压压力传感器，所述排气稳压压力传感器均与所述排气灌的内部相连通，所述静压水箱的底部出口与所述排气灌的顶部进口之间通过二次侧旁通回液管路相连通，所述二次侧旁通回液管路上设置有二次侧旁通调节单元和二次侧旁通单向阀。
在一些实施例中，所述静压水箱的底部与所述排气灌的顶部进口之间设置有系统补液管路，所述系统补液管路上设置有二次侧系统补液泵和二次侧系统补液单向阀。
在一些实施例中，所述静压水箱的顶部连接有水箱自动补液管路和水箱手动补液管路，所述水箱手动补液管路包括依次连通的二次侧手动补液通断阀、二次侧补液过滤器和二次侧水箱补液泵，所述二次侧手动补液通断阀与所述静压水箱的顶部相连通，所述二次侧水箱补液泵与补液水箱相连通；所述水箱自动补液管路的一端与所述静压水箱的顶部相连通，另一端与带压冷却液输送管路相连通。
在一些实施例中，所述静压水箱的底部连接有排液管路，所述排液管路上设置有电磁阀，所述静压水箱的顶部连接有溢流管路，所述溢流管路与所述排液管路相连通。
在一些实施例中，所述静压水箱的底部连接有二次侧水质自动检测监控单元，所述二次侧水质自动检测监控单元用于二次侧冷却液水质状态的检测。
在一些实施例中，所述泵驱单元包括并联布置的第一泵驱单元和第二泵驱单元，所述第一泵驱单元和第二泵驱单元均包括依次连通的二次侧回液进口通断阀、二次侧驱动泵进口避震管、二次侧驱动泵、二次侧驱动泵出口避震管、二次侧回液单向阀和二次侧回液出口通断阀，所述二次侧回液进口通断阀与所述排气灌的底部出口相连通，所述二次侧回液出口通断阀与所述静压水箱的顶部相连通。
在一些实施例中，所述负载单元与所述排气灌的顶部之间依次连接有二次侧回液主路通断阀、二次侧紫外杀菌装置、二次侧回液压力传感器、二次侧回液温度传感器和二次侧回液流量传感器，所述二次侧回液流量传感器与所述排气灌的顶部相连通，所述二次侧回液主路通断阀与所述负载单元相连通。
在一些实施例中，所述二次侧回液压力传感器与所述二次侧回液流量传感器之间并联连接有二次侧漏液检测装置，所述二次侧漏液检测装置为液体气泡检测仪。
在一些实施例中，所述二次侧冷却单元包括二次侧供液单元，所述二次侧供液单元包括依次连接的二次侧供液压力传感器、三个二次侧供液温度传感器、二次侧冷却液可视化监控装置和二次侧供液主路通断阀，所述二次侧供液压力传感器与所述换热单元的二次侧出口相连通，所述二次侧供液主路通断阀与所述负载单元相连通。
在一些实施例中，所述二次侧供液压力传感器包括二次侧供液进口压力传感器与二次侧供液出口压力传感器，所述二次侧供液进口压力传感器与所述二次侧供液出口压力传感器之间连接有并联布置的二次侧第一供液模组和二次侧第二供液模组，所述二次侧 第一供液模组和二次侧第二供液模组均包括依次连接的二次侧进口通断阀、二次侧排液及水质取样阀、二次侧过滤器、二次侧出口通断阀，所述二次侧进口通断阀均与所述二次侧供液进口压力传感器相连通，所述二次侧出口通断阀均与所述二次侧供液出口压力传感器相连通。
在一些实施例中，所述一次侧冷却单元包括一次侧供液单元和一次侧冷机泵驱装置，所述一次侧供液单元包括依次连接的一次侧供液主路通断阀、一次侧紫外杀菌装置、一次侧供液温度传感器、一次侧供液压力传感器、一次侧供液自动排气阀，所述一次侧供液主路通断阀与所述一次侧冷机泵驱装置的出口相连通，所述一次侧供液自动排气阀与所述换热单元的一次侧进口相连通。
在一些实施例中，所述一次侧供液压力传感器包括一次侧进口压力传感器、一次侧出口压力传感器，所述一次侧进口压力传感器与所述一次侧出口压力传感器之间连接有并联布置的一次侧第一供液模组和一次侧第二供液模组，所述一次侧第一供液模组和一次侧第二供液模组均包括依次连接的一次侧进口通断阀、一次侧排液及水质取样阀、一次侧过滤器和一次侧出口通断阀，所述一次侧进口通断阀均与所述一次侧进口压力传感器相连通，所述一次侧出口通断阀均与所述一次侧出口压力传感器相连通。
在一些实施例中，所述一次侧冷却单元包括一次侧回液单元，所述一次侧回液单元包括依次连接的一次侧回液主路通断阀、一次侧冷却液可视化监控装置、一次侧冷却液流量传感器、一次侧回液温度传感器、一次侧回液压力传感器和一次侧冷却液调节装置，所述一次侧回液主路通断阀与所述一次侧冷机泵驱装置的进口相连通，所述一次侧冷却液调节装置与所述换热单元的一次侧出口相连通。
在一些实施例中，所述液冷散热系统还包括管外漏液检测装置，所述管外漏液检测装置包括电阻传感器。
在一些实施例中，所述一次侧冷机泵驱装置包括室外冷机、一次侧冷却液驱动泵、定压补水装置和自动加药装置。
另一方面，提供了一种液冷散热系统，所述液冷散热系统包括：
泵驱单元，用于对所述泵驱单元进口侧的管路执行抽水操作使得二次侧冷却单元中由静压水箱流向所述泵驱单元的管路处于负压状态，以形成负压管路；
静压水箱，与外界大气压相连通，用于通过外界大气压与所述负压管路内的负压建立压力差，以通过所述压力差建立二次侧冷却单元中冷却液的循环流动动力；
负载单元，用于在所述循环流动动力下将低温冷却液输送至负载并与负载执行热量交换后形成高温冷却液。
在一些实施例中，所述系统还包括：
二次侧回液温度传感器，用于二次侧回液单元的温度值，并通过所采集的温度值与预设温度值及所述泵驱单元建立温度反馈机制；响应于所述二次侧回液温度传感器的温度值高于所述预设温度值，提高所述泵驱单元的抽水功率以降低所述负压管路的负压；并通过增大的所述压力差提高所述循环流动动力以进一步提高所述二次侧冷却单元管路中的流量，使得所述二次侧回液温度传感器的温度值低于所述预设温度值。
在一些实施例中，所述系统还包括：
二次侧旁通调节单元，用于响应于所述负载单元的冷却液需求量低于所述泵驱单元出口侧的最低流量，调整二次侧旁通调节单元的阀门开度使得所述泵驱单元出口侧超过所述负载单元的冷却液需求量的流量流向排气灌并返回至所述泵驱单元进口侧。
本申请的上述技术方案相比相关技术具有以下优点：
上述液冷散热系统，泵驱单元对其进口侧的管路进行抽水操作，使得静压水箱的底部出口与泵驱单元进口之间的管路处于负压状态，形成负压管路；静压水箱内储存有冷却液，且静压水箱与外界大气相连通；外界大气压与负载管路的负压之间压力差，压力差建立起二次侧冷却单元中冷却液的循环流动动力，且二次侧负压管路始终处于负压状态，处于负压状态的负压管路能够有效的降低二次侧冷却单元管路中冷却液的漏液，有效的提高了液冷散热系统及数据中心的安全性。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1是本申请实施例提供的液冷散热系统的系统结构图；
图2是本申请实施例提供的液冷散热系统的一次侧冷却单元(一次侧供液单元和一次侧回液单元)的结构图；
图3是本申请实施例提供的液冷散热系统的二次侧供液单元的结构图；
图4是本申请实施例提供的液冷散热系统的二次侧回液单元的结构图；
图5是本申请实施例提供的液冷散热系统的静压水箱的结构图；
图6是本申请实施例提供的液冷散热系统的排气灌的结构图；
图7是本申请实施例提供的液冷散热系统的泵驱单元的结构图；
图8是本申请实施例提供的液冷散热方法的方法流程图。
附图标记说明：
1、一次侧冷却单元；101、一次侧供液单元；102、一次侧冷机泵驱装置；103、一
次侧回液单元；104、一次侧供液主路通断阀；105、一次侧紫外杀菌装置；106、一次侧供液温度传感器；107、一次侧供液自动排气阀；108、一次侧进口压力传感器；109、一次侧出口压力传感器；110、一次侧第一供液模组；111、一次侧第二供液模组；112、一次侧进口通断阀；113、一次侧排液及水质取样阀；114、一次侧过滤器；115、一次侧出口通断阀；116、一次侧回液主路通断阀；117、一次侧冷却液可视化监控装置；118、一次侧冷却液流量传感器；119、一次侧回液温度传感器；120、一次侧回液压力传感器；121、一次侧冷却液调节装置；
2、二次侧冷却单元；201、二次侧供液单元；202、负载单元；203、二次侧回液单
元；204、泵驱单元；205、静压水箱；206、排气灌；207、稳压排气阀；208、排气稳压压力传感器；209、二次侧旁通回液管路；210、二次侧旁通调节单元；211、二次侧旁通单向阀；212、系统补液管路；213、二次侧系统补液泵；214、二次侧系统补液单向阀；215、水箱自动补液管路；216、水箱手动补液管路；217、二次侧手动补液通断阀；218、二次侧补液过滤器；219、二次侧水箱补液泵；220、排液管路；221、电磁阀；222、溢流管路；223、二次侧水质自动检测监控单元；224、第一泵驱单元；225、第二泵驱单元；226、二次侧回液进口通断阀；227、二次侧驱动泵进口避震管；228、二次侧驱动泵；229、二次侧驱动泵出口避震管；230、二次侧回液单向阀；231、二次侧回液出口通断阀；232、二次侧回液主路通断阀；233、二次侧紫外杀菌装置；234、二次侧回液压力传感器；235、二次侧回液温度传感器；236、二次侧回液流量传感器；237、二次侧漏液检测装置；238、二次侧供液温度传感器；239、二次侧冷却液可视化监控装置；240、二次侧供液主路通断阀；241、二次侧供液进口压力传感器；242、二次侧供液出口压力传感器；243、二次侧第一供液模组；244、二次侧第二供液模组；245、二次侧进口通断阀；246、二次侧排液及水质取样阀；247、二次侧过滤器；248、二次侧出口通断阀；249、二次侧主路单向阀；250、大气连通管路；
3、换热单元。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
目前常规冷板式液冷泵驱换热系统存在以下缺点：
(1)现有冷却液循环管路为正压系统，采用正压驱动冷却液的方式为冷却液循环流动提供动力，即冷却液循环管路内压力大于外部大气压，其依靠泵驱换热系统内水泵不断转动产生的压力驱动冷却液在冷却液循环管路内不断循环流动，当管路出现破损或接头出现松动时，冷却液泄露导电造成服务器损坏；此外，现有的冷却液漏液检测补救措施效果不理想，仅能在冷却液已泄露到服务器内部指定位置依靠漏液检测线检测管路泄露，此时泄露已发生且已造成服务器损坏，泵驱换热系统无有效阻断管路泄露措施。
(2)无微生物细菌主动消杀措施，系统长期运行后微生物产生的生物泥及酸性物质将造成冷却液污染、冷却液循环管道及液冷服务器腐蚀损害，同时当微生物细菌数量达到一定程度，仅能通过冷却管路彻底清洗及冷却液全部更换等措施保证系统正常运行，造成了大量人力及物力浪费。
(3)无冷却液水质在线监测报警措施，易造成不符合水质要求的冷却液流通服务器，造成服务器冷板管道堵塞及腐蚀等情况的发生。
(4)整个系统易损件及需要频繁清洗部件前后缺少冷却液关断装置，进行系统维护时需将系统冷却液全部排净后方能进行，造成维修难度大且一定程度冷却液浪费等情况 的发生。
(5)无闭环自适应功能，泵驱换热系统仅能根据设定运行参数运行，无自感知装置，无法及时获取系统真实运行状态，无法根据系统使用需求自动调整设备运行状态，包含但不限于过滤器状态感知判定功能、换热器状态感知判定功能、系统自动补液功能及主动溢流等功能。
在一些实施例中，参照图1，图1为本申请实施例提供的液冷散热系统的系统结构图。
如图1所示，液冷散热系统包括一次侧冷却单元1、二次侧冷却单元2和换热单元3，一次侧冷却单元1的出口与换热单元3的一次侧进口相连通，换热单元3的一次侧出口与一次侧冷却单元1的进口相连通；二次侧冷却单元2的出口与换热单元3的二次侧进口相连通，二次侧冷却单元2的进口与换热单元3的二次侧出口相连通。液冷散热系统的工作原理为：一次侧冷却单元1所产生的冷却液(低温冷却液)通过一次侧冷却单元1的出口流入到换热单元3的一次侧进口，二次侧冷却单元2的冷却液(低温冷却液)与负载进行热量交换后形成的高温冷却液通过二次侧冷却单元2的出口进入到换热单元3的二次侧进口，在换热单元3内，进入换热单元3的一次侧冷却液(低温冷却液)与进入换热单元3的二次侧高温冷却液进行热量交换，使得进入换热单元3的一次侧冷却液变为高温冷却液，高温冷却液再通过一次侧冷却单元1变为冷却液(低温冷却液)；使得进入换热单元3的二次侧高温冷却液变为冷却液(低温冷却液)，冷却液(低温冷却液)再与负载进行热量交换后形成高温冷却液，循环往复，实现液冷散热系统对负载的降温冷却。换热单元3由钎焊式一体板式换热器构成，用于一次侧冷却单元1与二次侧冷却单元2之间的热量交换，通过换热翅片及逆流换热技术，将二次侧冷却单元2中的高温冷却液转换成低温冷却液，同时将一次侧冷却单元1的低温冷却液转换成高温冷却液，最终实现负载单元202(二次侧服务器等负载)产生的热量至一次侧冷却单元1的传递转换。
在一些实施例中，如图2所示，图2为本申请实施例提供的液冷散热系统的一次侧冷却单元(包含一次侧供液单元)的结构图。
一次侧冷却单元1包括一次侧冷机泵驱装置102、一次侧供液单元101和一次侧回液单元103。一次侧冷机泵驱装置102利用室外冷机为整个液冷散热系统提供散热所需要的冷源，也就是冷却液，冷却液如水、乙二醇等。一次侧冷机泵驱装置102提供的冷却液通过一次侧供液单元101将冷却液输送至换热单元3，换热单元3内的一次侧冷却液与二次侧高温冷却液进行热量交换后通过一次侧回液单元103返回一次侧冷机泵驱装置102。一次侧冷机泵驱装置102包括一次侧冷却液驱动泵，一次侧冷却液驱动泵为一次侧供液单元101和一次侧回液单元103中的冷却液提供流动动力，进而实现一次侧冷却液单元的循环流动。
一次侧供液单元101包括依次连接的一次侧供液主路通断阀104、一次侧紫外杀菌装置105、一次侧供液温度传感器106、一次侧进口压力传感器108、一次侧出口压力传感器109、一次侧供液自动排气阀107，一次侧供液主路通断阀104与一次侧冷机泵驱装置 102的出口相连通，一次侧供液自动排气阀107与换热单元3的一次侧进口相连通。
一次供液主路通断阀用于实现一次侧供液单元101与一次侧冷机泵驱装置102之间的整体通断，以便在后续管路相关零部件需要进行维护保养及一次侧冷机泵驱装置102整体迁移时进行供液主管路的关停操作。一次侧紫外杀菌装置105利用紫外线杀菌技术实现一次侧冷却单元1冷却液中微生物细菌的主动消杀，防止因一次侧冷却单元1冷却液中微生物细菌超标而引起的冷却液水质污染冷却液循环管道，或者微生物细菌超标而引起的液冷服务器腐蚀损害等问题的发生，提高了液冷散热系统的水质。一次侧供液温度传感器106用于进行一次侧供液单元101管路的温度读取输出工作，将一次侧供液单元101管路的温度输出至一次侧冷机泵驱装置102，以便控制系统(附图未示出)根据具体使用需求通过一次侧冷机泵驱装置102调节一次侧系统运行状态，如：当一次侧供液温度传感器106所获取的温度值高于预设温度值时，通过控制系统调大一次侧冷机泵驱装置102中一次侧冷却液驱动泵的功率或者调大一次侧冷机泵驱装置102中室外冷机的制冷能力，以便于将一次侧供液温度传感器106所获取的温度值降低到预设温度值以内。一次侧供液压力传感器用于检测一次侧供液单元101管路上的冷却液压力。一次侧供液自动排气阀107用于一次侧供液单元101的管路中混入气体的自动排放，避免因管路中存在气体引起汽蚀损坏管路情况的发生，提高了液冷散热系统的安全性。
在一些实施方式中，一次侧供液压力传感器包括一次侧进口压力传感器108(位于一次侧过滤器114的进口侧)、一次侧出口压力传感器109(位于一次侧过滤器114的出口侧)，如图2所示，一次侧进口压力传感器108与一次侧出口压力传感器109之间连接有并联布置的一次侧第一供液模组110和一次侧第二供液模组111，一次侧第一供液模组110和一次侧第二供液模组111均包括依次连接的一次侧进口通断阀112、一次侧排液及水质取样阀113、一次侧过滤器114和一次侧出口通断阀115，一次侧进口通断阀112均与一次侧进口压力传感器108相连通，一次侧出口通断阀115均与一次侧出口压力传感器109相连通。
一次侧过滤器114位于一次侧进口压力传感器108与一次侧出口压力传感器109之间，一次侧进口压力传感器108和一次侧出口压力传感器109共同构成一次侧过滤器114的滤芯状态监控单元，通过一次侧进口压力与一次侧出口压力的差值实现一次侧过滤器114的状态监控操作，当两者压力差值大于预设压差时，则表示一次侧过滤器114处于堵塞状态，控制系统则自动提醒相关维护人员进行一次侧过滤器114滤芯的清洗更换等操作。一次侧第一供液模组110的一次侧进口通断阀112、一次侧排液及水质取样阀113、一次侧过滤器114和一次侧出口通断阀115和一次侧第二供液模组111的一次侧进口通断阀112、一次侧排液及水质取样阀113、一次侧过滤器114和一次侧出口通断阀115共同组成一次侧冷却液过滤管路组件，其采用一用一备双过滤管路设计，以保证当其中一路出现问题或滤芯进行清洗更换时不影响系统的正常运行，即，一次侧第一供液模组110出现问题或更换滤芯时，通过一次侧第一供液模组110的一次侧进口通断阀112和一次侧出口通断阀115断掉一次侧第一供液模组110的管路，通过一次侧第二供液模组111正常运行；一次侧第二供液模组111出现问题或更换滤芯时，通过一次侧第二供液模组111的 一次侧进口通断阀112和一次侧出口通断阀115断掉一次侧第二供液模组111的管路，通过一次侧第一供液模组110正常运行。一次侧排液阀及水质取样阀实现一次侧过滤管路组件中冷却液的排放操作，一次侧第一供液模组110、一次侧第二供液模组111配合实现在一次侧冷机泵驱装置102不停机状态下过滤器滤芯的清洗更换及管路维护保养，提高了维护效率，降低了维护成本。此外通过一次侧排液阀及水质取样阀可以实现一次侧冷却单元1中冷却液的便捷取样操作，进而实现不停机状态下一次侧冷却单元1中冷却液的取样送检工作。一次侧过滤器114采用不锈钢可冲洗滤芯设计，能够完成一次侧冷却单元1冷却液中颗粒物的去除操作，以保证一次侧冷却单元1冷却液的水质状态符合一次侧冷却单元1使用需求，进一步提高冷却液的水质。
在一些实施例中，如图2所示，图2为本申请实施例提供的液冷散热系统的一次侧冷却单元(包含一次侧回液单元)的结构图。
一次侧回液单元103负责将经过换热单元3的一次侧高温冷却液输送至一次侧冷机泵驱装置102进行降温操作。一次侧回液单元103包括依次连接的一次侧回液主路通断阀116、一次侧冷却液可视化监控装置117、一次侧冷却液流量传感器118、一次侧回液温度传感器119、一次侧回液压力传感器120和一次侧冷却液调节装置121，一次侧回液主路通断阀116与一次侧冷机泵驱装置102的进口相连通，一次侧冷却液调节装置121与换热单元3的一次侧出口相连通。
一次回液主路通断阀用于一次侧回液单元103与一次侧冷机泵驱装置102之间的整体通断，以便在一次侧回液单元103相关零部件需要进行维护保养及一次侧冷机泵驱换热装置整体迁移时进行回液主管路关停操作。一次侧冷却液可视化监控装置117用于一次侧冷却单元1冷却液的循环状态监控，一次侧冷却液可视化监控装置117采用透明钢化玻璃设计，作业人员能够直观清晰零距离进行冷却液循环状态查看，包括但不限于水质浑浊程度、水中杂质及气泡量等相关状态，提高液冷散热系统的水质监测能力。一次侧冷却液流量传感器118用于一次侧冷却单元1冷却液流量的监控使用，能够将一次侧冷却单元1冷却液流量数据输出并上传至控制系统，以便控制系统能够实时掌握一次侧冷却单元1冷却液流量信息并根据实际需要进行相关调整，即，当一次侧冷却液流量传感器118所采集到的冷却液流量未达到相应的预设值时，提高一次侧冷机泵驱换热装置中一次侧冷却液驱动泵的功率，或者当一次侧冷却液流量传感器118所采集到的冷却液流量超过相应的预设值时，降低一次侧冷机泵驱换热装置中一次侧冷却液驱动泵的功率。一次侧回液温度传感器119的工作原理可参见一次侧供液温度传感器106。一次侧回液压力传感器120用于一次侧回液单元103管路的回液压力采集，相当于换热单元3的一次侧出口压力值，一次侧供液压力传感器用于一次侧供液单元101的供液压力采集，相当于换热单元3的一次侧进口压力值，将换热单元3的一次侧进口压力值与一次侧出口压力值相对比得到换热单元3一次侧进出口的压差，通过该压差可以判断换热单元3的工作状态，如果压差过大，则说明换热单元3存在内部堵塞的可能，以及时同时维护人员进行维护，提高维护效率。同时一次侧回液压力传感器120所采集的回液压力可供控制系统根据具体使用需求调节一次侧冷却单元1的运行状态，如根据实际需求调整一次侧冷机 泵驱换热装置的流量。一次侧冷却液调节装置121采用电动比例阀设计，能够通过调整阀门开度进行一次侧冷却单元1冷却液压力、流量及温度等相关参数的调整，以便满足一次侧冷却单元1的具体使用需求。
在一些实施例中，如图3所示，图3为本申请实施例提供的液冷散热系统的二次侧供液单元的结构图。
二次侧冷却单元2包括二次侧供液单元201、二次侧回液单元203和负载单元202，二次侧冷却单元2利用泵驱单元204带动二次侧冷却单元2管路中冷却液的循环流动，并持续不断的将服务器、交换机等负载单元202所产生的热量传递至换热单元3，以完成二次侧冷却单元2与一次侧冷却单元1之间的热量交换。其中，二次侧供液单元201包括依次连接的二次侧供液压力传感器、三个二次侧供液温度传感器238、二次侧冷却液可视化监控装置239和二次侧供液主路通断阀240，二次侧供液进口压力传感器241与换热单元3的二次侧出口相连通，二次侧供液主路通断阀240与负载单元202相连通。
二次侧供液温度传感器238采用一用两备设计方案，用于二次侧供液单元201管路中冷却液(低温冷却液)温度的读取输出工作，将二次侧供液温度传感器238所采集的冷却液温度输出至控制系统，以便控制系统根据具体使用需求调节二次侧供液单元201的运行状态，具体调节方式参见一次侧供液温度传感器106。不同的数据中心的等级不同，其可靠性不同，因此需要根据数据中心的等级机可靠性来对二次侧供液温度传感器238的方案进行设计，包括一用一备方案(低可靠性)、一用两备方案(高可靠性)。二次侧冷却液可视化监控装置239的作用参见一次侧冷却液可视化监控装置117的描述。二次侧供液主路通断阀240用于实现二次侧供液单元201与负载单元202之间的整体通断，以便二次侧供液单元201相关零部件需要进行维护保养及一次侧冷机泵驱装置102整体迁移时进行供液主管路的关停操作，提高维护效率。负载单元202由液冷服务器及液冷整机柜等相关液冷产品构成，负载单元202在运行过程中将产生大量热量并通过液冷产品中的冷板组件将二次侧供液单元201提供的低温冷却液升温至二次侧回液单元203输送的高温冷却液，进而完成液冷产品的热量传递转换及散热操作。
在一些实施方式中，二次侧供液压力传感器包括二次侧供液进口压力传感器241与二次侧供液出口压力传感器242，二次侧供液进口压力传感器241与二次侧供液出口压力传感器242之间连接有并联布置的二次侧第一供液模组243和二次侧第二供液模组244，二次侧第一供液模组243和二次侧第二供液模组244均包括依次连接的二次侧进口通断阀245、二次侧排液及水质取样阀246、二次侧过滤器247、二次侧出口通断阀248，二次侧进口通断阀245均与二次侧供液进口压力传感器241相连通，二次侧出口通断阀248均与二次侧供液出口压力传感器242相连通。二次侧第一供液模组243和二次侧第二供液模组244与一次侧第一供液模组110、一次侧第二供液模组111的工作原理一致，具体工作方式参见一次侧第一供液模组110和一次侧第二供液模组111的描述。
在一些实施例中，如图4所示，图4为本申请实施例提供的液冷散热系统的二次侧回液单元的结构图。
二次侧回液单元203包括泵驱单元204和静压水箱205，泵驱单元204的进口与负载 单元202的出口相连通，泵驱单元204的出口与静压水箱205的顶部相连通，静压水箱205的顶部与大气相连通，静压水箱205的底部设置有底部出口，静压水箱205的底部出口与换热单元3的二次侧进口相连通，换热单元3的二次侧出口与负载单元202的进口相连通，其中，所述泵驱单元204为对其进口侧进行抽水的抽水泵。
二次侧回液单元203利用泵驱单元204持续不断的将已与负载单元202完成换热的二次侧高温冷却液输送至换热单元3，以通过换热单元3完成二次侧高温冷却液的降温操作，其中，泵驱单元204为二次侧冷却单元2管路中的冷却液提供驱动力，泵驱单元204包括二次侧驱动泵228，二次侧驱动泵228为普通的抽水泵，二次侧驱动泵228将其进口侧的压强降低，使得二次侧驱动泵228进口侧与静压水箱205底部出口之间的管路处于负压状态，从而形成负压管路，如图5所示，静压水箱205通过大气连通管路250与外界大气相连通，静压水箱205的压力大于负压管路的压强，大气压与负压之间形成压力差，压力差建立起二次侧冷却单元2的冷却液循环流动动力，因此在循环流动动力的作用下将静压水箱205的冷却液输送至负压管路。此外，静压水箱205顶部的与大气连通管路250用于静压水箱205的泄压操作，其顶部设置有防尘端盖，避免外界颗粒进入水箱内部污染静压水箱205内的二次侧冷却液。此外，静压水箱205的底部出口与换热单元3的二次侧进口之间设置有二次侧主路单向阀249，防止高温冷却液回流。负载单元(202)用于将低温冷却液与负载执行热量交换后形成高温冷却液。外界大气压与负压管路内的负压所建立起的压差使得负压管路一直工作于负压状态，能够有效的减少冷却液的泄露，提高液冷散热系统及数据中心的安全性。
在一些实施方式中，二次侧冷却单元2包括二次侧回液单元203，二次侧回液单元203包括排气灌206，静压水箱205的底部出口、负载单元202的出口均与排气灌206的顶部进口相连通，排气灌206的底部出口与泵驱单元204的进口相连通，排气灌206的顶部设置有稳压排气阀207。
如图6所示，二次侧冷却单元2的冷却液中会混杂气体，当静压水箱205底部出口与排气灌206的顶部进口之间管路中混杂气体时，静压水箱205底部出口与排气灌206的顶部进口之间管路中的冷却液流入排气灌206，混杂气体也会进入排气灌206内部并通过稳压排气阀207排出；当通过负载单元202换热后产生的二次侧高温冷却液中混杂气体时，负载单元202换热后产生的二次侧高温冷却液进入排气灌206，混杂气体也会进入排气灌206内部并通过稳压排气阀207排出，从而避免因管路中气体引起的噪音震动过大、管路损伤及水泵叶片气蚀损坏等问题的发生。在排气罐内完成脱气的二次侧冷却液(高温冷却液)将在二次侧驱动泵228的作用下进入与排气罐底部出口相连接的出液管路并在二次侧冷却单元2的循环管路内循环流动起来。
在一些实施方式中，所述排气灌206的顶部还设置有排气稳压压力传感器208，所述排气稳压压力传感器208均与所述排气灌206的内部相连通，静压水箱205的底部出口与排气灌206的顶部进口之间通过二次侧旁通回液管路209相连通，二次侧旁通回液管路209上设置有二次侧旁通调节单元210和二次侧旁通单向阀211。
流经负载单元202并完成换热的二次侧高温冷却液以及流经二次侧旁通回液管路209 的二次侧高温冷却液均从排气罐的顶部进口进入二次侧排气罐内部。排气稳压压力传感器208用于采集排气灌206内部的气压，当排气灌206内的气压低于阈值时，则说明排气灌206内部的冷却液较少，此时便可以调整进入排气灌206的冷却液流量，如提高二次侧驱动泵228的转速，和/或，提高二次侧旁通回液管路209流入排气灌206的冷却液流量，以提高排气灌206内的气压；当排气灌206内的气压高于阈值时，则说明排气灌206内部的冷却液较多，此时便可以调整进入排气灌206的冷却液流量，如降低二次侧驱动泵228的转速，和/或，降低二次侧旁通回液管路209流入排气灌206的冷却液流量，以降低排气灌206内的气压，因此可以根据实际需要自动调整二次侧旁通调节单元210的阀门开度进行旁通流量的调节。进一步的，通过二次侧旁通回液管路209上的二次侧旁通调节单元210调节阀门的开度来调节二次侧旁通回液管路209进入排气灌206的冷却液的流量。二次侧旁通回液管路209上还设置有二次侧旁通单向阀211，二次侧旁通单向阀211用于防止冷却液回流。此外，当负载单元202的冷却液需求量低于泵驱单元204输送的最低流量时，将二次侧回液旁通管路的二次侧旁通调节单元210开度调大，以将通过泵驱单元204流向静压水箱205的冷却液通过排气灌206直接流回泵驱单元204进口侧，相当于将泵驱单元204出液口与进液口进行连接，以将多于负载单元202冷却液需求量的冷却液返回至泵驱单元204，以免多于负载单元202冷却液需求量的冷却液通过静压水箱205溢流造成冷却液浪费。
在一些实施方式中，静压水箱205的底部与排气灌206的顶部进口之间设置有系统补液管路212，系统补液管路212上设置有二次侧系统补液泵213和二次侧系统补液单向阀214。
系统补液管路212由二次侧系统补液泵213和二次侧系统补液单向阀214及相关管路组成。例如，数据中心的服务器总数量增加，因此负载单元202增加，所需要的冷却液增加，此时便可以通过二次侧系统补液泵213将静压水箱205的内的冷却液补入到二次侧冷却单元2的管路中，以满足负载端的冷却液需求。二次侧系统补液单向阀214防止进入管路内的冷却液回流。此外，在负载单元202与二次侧回液主路通断阀232之间建立并联的冷却液支路，该支路的两端设置通断阀，该支路用于在服务器总数量增加时，实现液冷散热系统不停机状态下对新增加的服务器负载安装冷却液散热管路，此时需增加冷却液需求量，工作人员在控制系统内设置新增加的服务器负载数量，控制系统接收用户设置的服务器数量，自动计算新增加的服务器所需的冷却液需求量，然后控制系统补液管路212向排气灌内206内补入所需量的冷却液，能够提升作业人员的作业效率，并且还能够在不停机状态下增加新的服务器负载的散热管路。
在一些实施方式中，静压水箱205的顶部连接有水箱自动补液管路215和水箱手动补液管路216，水箱手动补液管路216包括依次连通的二次侧手动补液通断阀217、二次侧补液过滤器218和二次侧水箱补液泵219，二次侧手动补液通断阀217与静压水箱205的顶部相连通，二次侧水箱补液泵219与补液水箱相连通；水箱自动补液管路215的一端与静压水箱205的顶部相连通，另一端与带压冷却液输送管路相连通。
液冷热系统长时间运行后会导致冷却液量的降低，因此需要定时向静压水箱205内 补充冷却液，冷却液的补充包括自动补液和手动补液两种方式。手动补液方式包括水箱手动补液管路216，水箱手动补液管路216由二次侧手动补液通断阀217、二次侧补液过滤器218及二次侧水箱补液泵219和补水水箱组成，水箱手动补液管路216的一端连接静压水箱205的顶部，另一端与补水水箱连接，补水水箱为外界无压二次侧冷却液盛放容器；当静压水箱205需要进行手动补液时，人员手动打开二次侧手动补液通断阀217，并启动二次侧水箱补液泵219进行补液操作。同时二次侧补液过滤器218能够对补充的冷却液进行过滤清洁，防止冷却液中的杂质进入泵驱换热系统内部。自动补液方式包括水箱自动补液管路215，水箱自动补液管路215的一端连接静压水箱205得到顶部，另一端与外界带压二次侧冷却液输送管路连接，其上装有开关电磁阀；当静压水箱205输出补液需求时，其电磁阀自动打开，二次侧冷却液将利用外界带压二次侧冷却液输送管路自动输送至水箱内部，当补液完成后，电磁阀自动关闭。
在一些实施方式中，静压水箱205的底部连接有排液管路220，排液管路220上设置有电磁阀221，静压水箱205的顶部连接有溢流管路222，溢流管路222与排液管路220相连通。
当液冷散热系统出现严重堵塞等情况而导致静压水箱205内的冷却液超出静压水箱205的容积时，需要将超出静压水箱205容积的冷却液排出，因此静压水箱205的顶部需要设置溢流管路222，通过溢流管路222将超出静压水箱205容积的冷却液排出。进一步的，在需要排出静压水箱205内的冷却液时，需要通过静压水箱205的底部将降压水箱内的冷却液排出，因此在静压水箱205的底部设置排液管路220，排液管路220上设置电磁阀221，通过电磁阀221将静压水箱205内的冷却液排出。同时，溢流管路222可以直接与排液管路220相连通，溢流的冷却液直接通过排液管路220排出，溢流管路222连接在排液管路220上电磁阀221的出口一侧。溢流管路222用于静压水箱205的安全溢流，避免因水量过多造成的系统故障，提高液冷散热系统的安全性。
在一些实施方式中，静压水箱205的底部连接有二次侧水质自动检测监控单元223，二次侧水质自动检测监控单元223用于二次侧冷却液水质状态的检测。
静压水箱205的底部连接有二次侧水质自动检测监控单元223，二次侧水质自动检测监控单元223用于二次侧冷却单元2中冷却液浊度、电导率、PH及颗粒度等水质状态的检测，其内置相应传感器以完成相关水质检测工作，以提高冷却液的水质。
在一些实施方式中，泵驱单元204包括并联布置的第一泵驱单元224和第二泵驱单元225，第一泵驱单元224和第二泵驱单元225均包括依次连通的二次侧回液进口通断阀226、二次侧驱动泵进口避震管227、二次侧驱动泵228、二次侧驱动泵出口避震管229、二次侧回液单向阀230和二次侧回液出口通断阀231，二次侧回液进口通断阀226与排气灌206的底部出口相连通，二次侧回液出口通断阀231与静压水箱205的顶部相连通。
如图7所示，泵驱单元204包括第一泵驱单元224和第二泵驱单元225，第一泵驱单元224和第二泵驱单元225并联布置。第一泵驱单元224和第二泵驱单元225均由二次侧回液进口通断阀226、二次侧驱动泵进口避震管227、二次侧驱动泵228、二次侧驱动泵出口避震管229、二次侧回液单向阀230和二次侧回液出口通断阀231组成。第一泵驱单 元224和第二泵驱单元225利用二次侧驱动泵228为二次侧冷却单元2冷却液的循环流动提供驱动力。泵驱单元204采用一用一备双泵驱轮巡工作设计，一方面用于保证当其中一个泵驱单元出现问题需要停机维修时不影响系统的正常运行，另一方面能够避免单路因长时间工作引起的电机过热、热衰减、效率下降及使用寿命缩减等问题的发生，有效提升泵驱单元204使用寿命及工作效率。二次侧驱动泵进口避震管227及二次侧驱动泵出口避震管229用于消除二次侧驱动泵228与管路对接时的安装误差及降低二次侧驱动泵228运行时的震动冲击。二次侧回液单向阀230用于防止经过二次侧驱动泵228输出的二次侧冷却液回流造成的驱动泵驱动力下降及静压水箱205内的冷却液回吸。二次侧冷却液进口通断阀与次侧冷却液出口通断阀两者配合实现泵驱单元204管路的整体通断，两者配合共同实现在液冷散热系统不停机状态下泵驱单元204相关零部件的维护保养。
在一些实施方式中，负载单元202与排气灌206的顶部之间依次连接有二次侧回液主路通断阀232、二次侧紫外杀菌装置233、二次侧回液压力传感器234、二次侧回液温度传感器235和二次侧回液流量传感器236，二次侧回液流量传感器236与排气灌206的顶部相连通，二次侧回液主路通断阀232与负载单元202相连通。
二次侧回液主路通断阀232用于实现二次侧回液单元203与负载单元202之间的整体通断，以便二次侧回液单元203相关零部件需要进行维护保养及一次侧冷机泵驱装置102整体迁移时进行回液主管路关停操作。二次侧紫外杀菌装置233利用紫外线杀菌技术实现二次侧冷却单元2冷却液中微生物细菌的主动消杀，防止因二次侧冷却单元2冷却液中微生物细菌超标而引起的冷却液水质污染冷却液循环管道及液冷服务器腐蚀损害等问题的发生。二次侧回液压力传感器234用于二次侧回液单元203的回液压力及负载单元202出口侧压力的读取输出工作，将二次侧回液单元203的回液压力输出至控制系统，控制系统将此压力数值与二次侧供液出口压力传感器242测得的负载单元202进口侧压力进行对比，如果两者的压差较大，则说明负载单元202处可能存在堵塞的情况；此外，控制系统判断二次侧回液单元203的回液压力值的大小，如果二次侧回液单元203的回液压力值偏大，则需调大二次侧驱动泵228的功率，以进一步降低负压管路的负压，也就是进一步增大大气压与负压之间的压力差，增大的压力差来提高二次侧冷却单元2中冷却液的驱动能力。
在一些实施方式中，二次侧回液压力传感器234与二次侧回液流量传感器236之间并联连接有二次侧漏液检测装置237。
二次侧漏液检测装置237采用液体气泡检测仪实现二次侧冷却单元2的漏液及管路破损实时检测功能。当管路出现破损时，由于二次侧冷却单元2的管路内部处于负压状态，大量外界气体将通过管路破损处进入管路，此时二次侧漏液检测装置237内的液体气泡检测仪将能够迅速检测到管路破损信息并输出至控制系统。随后控制系统将根据实际情况进行相关处理操作。由于二次侧漏液检测装置237执行漏液检测时需要规定的冷却液压力，因此将二次侧漏液检测装置237并联在回液管路上，以使得二次侧漏液检测装置237所在管路的冷却液压力在规定值以内。
在一些实施方式中，液冷散热系统还包括管外漏液检测装置，管外漏液检测装置包 括电阻传感器。
液冷散热系统的一次侧冷却单元1依然是正压系统，因此在一次侧冷却单元1的管路外侧容易出现漏液的部位布置管外漏液检测装置，如通过电阻传感器来感应管路是否漏液。此外，二次侧冷却单元2采用负压系统，但是二次侧冷却单元2如果出现较为严重的漏液，如破损处较大，会出现冷却液泄露的情况，因此在二次侧冷却单元2容易漏液的部位布置管外漏液检测装置，通过二次侧漏液检测装置237与管外漏液检测装置的结合来提高漏液检测能力，以进一步提高液冷散热系统的安全性。
在一些实施方式中，一次侧冷机泵驱装置102包括室外冷机、一次侧冷却液驱动泵、定压补水装置和自动加药装置。
一次侧冷机泵驱装置102由室外冷机、一次侧冷却液驱动泵、定压补水装置及自动加药装置构成，一次侧冷机泵驱装置102用于实现一次侧冷却单元1冷却液降温及冷却液循环流动。室外冷机利用压缩机、蒸发散热等技术完成一次侧冷却单元1的冷却液降温操作。一次侧冷却液驱动泵为一次侧冷却单元1的冷却液提供流动动力，进而实现一次侧冷却单元1冷却液的循环流动。
在一些实施例中，参照图4和8所示，图4为本申请实施例提供的液冷散热系统的二次侧回液单元的结构图，图8为本申请实施例提供的液冷散热方法的方法流程图。
所述液冷散热方法包括：
S101，通过泵驱单元204对所述泵驱单元204进口侧的管路执行抽水操作使得二次侧冷却单元2中位于静压水箱205的底部出口与所述泵驱单元204进口之间的管路处于负压状态，以形成负压管路；
S102，通过外界大气压与所述负压管路内的负压建立压力差，以通过所述压力差建立二次侧冷却单元2中冷却液的循环流动动力；
S103，流经所述静压水箱205的高温冷却液在所述循环流动动力下流入换热单元3并在所述换热单元3内进行热量交换后形成低温冷却液；
S104，在所述循环流动动力的作用下将所述低温冷却液输送至负载单元202并与负载进行热量交换。
本申请的泵驱单元204对泵驱单元204进口侧的管路进行抽水操作，使得静压水箱205的底部出口与泵驱单元204进口之间的管路处于负压状态，因此静压水箱205的底部出口与泵驱单元204进口之间的管路形成负压管路；静压水箱205内储存有冷却液，且静压水箱205与外界大气相连通，因此外界大气压与负压管路的负压产生压力差，且外界大气压大于负压管路的压力，因此外界大气压与负压管路的负压产生的压力差建立起二次侧冷却单元2中冷却液的循环流动动力。在循环流动动力下，静压水箱205内的高温冷却液输送至换热单元3，高温冷却液在换热单元3进行热量交换形成低温冷却液，低温冷却液在循环流动动力下将低温冷却液输送至负载单元202，低温冷却液在负载单元202与负载进行热量交换，实现对负载的冷却降温。
外界大气压与负压管路内的负压所建立起的压差使得负压管路一直工作于负压状态，能够有效的减少冷却液的泄露，提高液冷散热系统及数据中心的安全性。
在一些实施方式中，所述方法还包括：
在所述负载单元202执行热量交换后的低温冷却液形成高温冷却液；
通过所述循环流动动力将所述高温冷却液输流经所述泵驱单元204并输送至所述静压水箱205。
低温冷却液在负载单元202与负载进行热量交换后形成高温冷却液，然后高温冷却液在循环流动动力下输送至泵驱单元204，泵驱单元204出口侧的高温冷却液为带压冷却液，带压冷却液的压力大于大气压，因此带压冷却液进一步流向静压水箱205，带压冷却液在静压水箱205内泄压，实现冷却液在二次侧冷却单元2中往复循环。
在一些实施方式中，所述方法还包括：
通过二次侧回液温度传感器235的温度值与预设温度值及所述泵驱单元204建立温度反馈机制；
响应于所述二次侧回液温度传感器235的温度值高于所述预设温度值，提高所述泵驱单元204的抽水功率以降低所述负压管路的负压；
通过增大的所述压力差提高所述循环流动动力以提高所述二次侧冷却单元2管路中的流量，使得所述二次侧回液温度传感器235的温度值低于所述预设温度值。
二次侧回液温度传感器235能够实时监测二次侧回液单元203管路中高温冷却液的温度，通过二次侧回液温度传感器235、预设温度值和泵驱单元204建立温度反馈机制，提高控制系统的控制能力和安全性。具体工作原理为：实时监测二次侧回液单元203管路中高温冷却液的温度，将二次侧回液单元203管路中高温冷却液的温度于预设温度值作比较，如果二次侧回液单元203管路中高温冷却液的温度高于预设温度值(高阈值)，则提高泵驱单元204的抽水功率以进一步降低负压管路的负压，此时外界大气压与负压管路的负压形成的压力差数值会增大，通过增大的压力差提高循环流动动力，以进一步提高二次侧冷却单元2管路中的流量，直至二次侧回液温度传感器235的温度值低于预设温度值，停止泵驱单元204的功率调高操作；如果二次侧回液单元203管路中高温冷却液的温度低于预设温度值(低阈值)，则降低泵驱单元204的抽水功率以进一步增大负压管路的负压，此时外界大气压与负压管路的负压形成的压力差数值会减小，通过减小的压力差降低循环流动动力，以进一步降低二次侧冷却单元2管路中的流量，直至二次侧回液温度传感器235的温度值高于预设温度值，停止泵驱单元204的功率调低操作。进一步的，流量、温度、压力是连锁作用的关系，提高泵驱单元204的功率，则会增大管路中的流量，则会相应的增大压力、降低温度。此外，还可以通过二次侧供液温度传感器238所采集的温度数据建立反馈机制，具体工作原理相同。
在一些实施方式中，所述方法还包括：
响应于所述负载单元202的冷却液需求量低于所述泵驱单元204出口侧的最低流量，调整二次侧旁通调节单元210的阀门开度使得所述泵驱单元204出口侧超过所述负载单元202的冷却液需求量的流量流向排气灌206并返回至所述泵驱单元204进口侧。
如果负载单元202的冷却液需求量低于泵驱单元204出口侧的最低流量，则表示负载单元202的负载减少，例如之前存在十个服务器，现在存在一个服务器，但是负载单 元202的冷却液需求量低于泵驱单元204出口侧的最低流量，此时则调整二次侧旁通调节单元210的阀门开度，将二次侧回液旁通管路的二次侧旁通调节单元210开度调大，以将通过泵驱单元204流向静压水箱205的冷却液通过排气灌206直接流回泵驱单元204进口侧，相当于将泵驱单元204出液口与进液口进行连接，以将多于负载单元202冷却液需求量的冷却液返回至泵驱单元204，以免多于负载单元202冷却液需求量的冷却液通过静压水箱205溢流造成冷却液浪费。
应该理解的是，虽然图8的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，图8中的至少一部分步骤可以包括多个子步骤或者多个阶段，这些子步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些子步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤的子步骤或者阶段的至少一部分轮流或者交替地执行。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (20)

  1. 一种液冷散热系统，其特征在于，所述液冷散热系统包括一次侧冷却单元(1)、二次侧冷却单元(2)和换热单元(3)，所述一次侧冷却单元(1)的出口与所述换热单元(3)的一次侧进口相连通，所述换热单元(3)的一次侧出口与所述一次侧冷却单元(1)的进口相连通；所述二次侧冷却单元(2)包括泵驱单元(204)、静压水箱(205)和负载单元(202)，所述泵驱单元(204)的进口与所述负载单元(202)的出口相连通，所述泵驱单元(204)的出口与所述静压水箱(205)相连通，所述静压水箱(205)与大气相连通，所述静压水箱(205)与所述换热单元(3)的二次侧进口相连通，所述换热单元(3)的二次侧出口与所述负载单元(202)的进口相连通，其中，所述泵驱单元为对其进口侧进行抽水的抽水泵。
  2. 根据权利要求1所述的液冷散热系统，其特征在于，所述二次侧冷却单元(2)包括二次侧回液单元(203)，所述二次侧回液单元(203)包括排气灌(206)，所述静压水箱(205)的底部出口、所述负载单元(202)的出口均与所述排气灌(206)的顶部进口相连通，所述排气灌(206)的底部出口与所述泵驱单元(204)的进口相连通，所述排气灌(206)的顶部设置有稳压排气阀(207)。
  3. 根据权利要求2所述的液冷散热系统，其特征在于，所述排气灌(206)的顶部还设置有排气稳压压力传感器(208)，所述排气稳压压力传感器(208)均与所述排气灌(206)的内部相连通，所述静压水箱(205)的底部出口与所述排气灌(206)的顶部进口之间通过二次侧旁通回液管路(209)相连通，所述二次侧旁通回液管路(209)上设置有二次侧旁通调节单元(210)和二次侧旁通单向阀(211)。
  4. 根据权利要求2所述的液冷散热系统，其特征在于，所述静压水箱(205)的底部与所述排气灌(206)的顶部进口之间设置有系统补液管路(212)，所述系统补液管路(212)上设置有二次侧系统补液泵(213)和二次侧系统补液单向阀(214)。
  5. 根据权利要求2所述的液冷散热系统，其特征在于，所述静压水箱(205)的顶部连接有水箱自动补液管路(215)和水箱手动补液管路(216)，所述水箱手动补液管路(216)包括依次连通的二次侧手动补液通断阀(217)、二次侧补液过滤器(218)和二次侧水箱补液泵(219)，所述二次侧手动补液通断阀(217)与所述静压水箱(205)的顶部相连通，所述二次侧水箱补液泵(219)与补液水箱相连通；所述水箱自动补液管路(215)的一端与所述静压水箱(205)的顶部相连通，另一端与带压冷却液输送管路相连通。
  6. 根据权利要求2所述的液冷散热系统，其特征在于，所述静压水箱(205)的底部连接有排液管路(220)，所述排液管路(220)上设置有电磁阀(221)，所述静压水箱(205)的顶部连接有溢流管路(222)，所述溢流管路(222)与所述排液管路(220)相连通。
  7. 根据权利要求2所述的液冷散热系统，其特征在于，所述静压水箱(205)的底部连接有二次侧水质自动检测监控单元(223)，所述二次侧水质自动检测监控单元(223)用于二次侧冷却液水质状态的检测。
  8. 根据权利要求2所述的液冷散热系统，其特征在于，所述泵驱单元(204)包括并联布置的第一泵驱单元(224)和第二泵驱单元(225)，所述第一泵驱单元(224)和第二泵驱单元 (225)均包括依次连通的二次侧回液进口通断阀(226)、二次侧驱动泵(228)进口避震管(227)、二次侧驱动泵、二次侧驱动泵出口避震管(229)、二次侧回液单向阀(230)和二次侧回液出口通断阀(231)，所述二次侧回液进口通断阀(226)与所述排气灌(206)的底部出口相连通，所述二次侧回液出口通断阀(231)与所述静压水箱(205)的顶部相连通。
  9. 根据权利要求2所述的液冷散热系统，其特征在于，所述负载单元(202)与所述排气灌(206)的顶部之间依次连接有二次侧回液主路通断阀(232)、二次侧紫外杀菌装置(233)、二次侧回液压力传感器(234)、二次侧回液温度传感器(235)和二次侧回液流量传感器(236)，所述二次侧回液流量传感器(236)与所述排气灌(206)的顶部相连通，所述二次侧回液主路通断阀(232)与所述负载单元(202)相连通。
  10. 根据权利要求9所述的液冷散热系统，其特征在于，所述二次侧回液压力传感器(234)与所述二次侧回液流量传感器(236)之间并联连接有二次侧漏液检测装置(237)，所述二次侧漏液检测装置(237)为液体气泡检测仪。
  11. 根据权利要求2所述的液冷散热系统，其特征在于，所述二次侧冷却单元(2)包括二次侧供液单元(201)，所述二次侧供液单元(201)包括依次连接的二次侧供液压力传感器、三个二次侧供液温度传感器(238)、二次侧冷却液可视化监控装置(239)和二次侧供液主路通断阀(240)，所述二次侧供液压力传感器与所述换热单元(3)的二次侧出口相连通，所述二次侧供液主路通断阀(240)与所述负载单元(202)相连通。
  12. 根据权利要求11所述的液冷散热系统，其特征在于，所述二次侧供液压力传感器包括二次侧供液进口压力传感器(241)与二次侧供液出口压力传感器(242)，所述二次侧供液进口压力传感器(241)与所述二次侧供液出口压力传感器(242)之间连接有并联布置的二次侧第一供液模组(243)和二次侧第二供液模组(244)，所述二次侧第一供液模组(243)和二次侧第二供液模组(244)均包括依次连接的二次侧进口通断阀(245)、二次侧排液及水质取样阀(246)、二次侧过滤器(247)、二次侧出口通断阀(248)，所述二次侧进口通断阀(245)均与所述二次侧供液进口压力传感器(241)相连通，所述二次侧出口通断阀(248)均与所述二次侧供液出口压力传感器(242)相连通。
  13. 根据权利要求2所述的液冷散热系统，其特征在于，所述一次侧冷却单元(1)包括一次侧供液单元(101)和一次侧冷机泵驱装置(102)，所述一次侧供液单元(101)包括依次连接的一次侧供液主路通断阀(104)、一次侧紫外杀菌装置(105)、一次侧供液温度传感器(106)、一次侧供液压力传感器、一次侧供液自动排气阀(107)，所述一次侧供液主路通断阀(104)与所述一次侧冷机泵驱装置(102)的出口相连通，所述一次侧供液自动排气阀(107)与所述换热单元(3)的一次侧进口相连通。
  14. 根据权利要求13所述的液冷散热系统，其特征在于，所述一次侧供液压力传感器包括一次侧进口压力传感器(108)、一次侧出口压力传感器(109)，所述一次侧进口压力传感器(108)与所述一次侧出口压力传感器(109)之间连接有并联布置的一次侧第一供液模组(110)和一次侧第二供液模组(111)，所述一次侧第一供液模组(110)和一次侧第二供液模组(111)均包括依次连接的一次侧进口通断阀(112)、一次侧排液及水质取样阀(113)、一次侧过滤器(114)和一次侧出口通断阀(115)，所述一次侧进口通断阀(112)均与所述一次侧进 口压力传感器(108)相连通，所述一次侧出口通断阀(115)均与所述一次侧出口压力传感器(109)相连通。
  15. 根据权利要求13所述的液冷散热系统，其特征在于，所述一次侧冷却单元(1)包括一次侧回液单元(103)，所述一次侧回液单元(103)包括依次连接的一次侧回液主路通断阀(116)、一次侧冷却液可视化监控装置(117)、一次侧冷却液流量传感器(118)、一次侧回液温度传感器(119)、一次侧回液压力传感器(120)和一次侧冷却液调节装置(121)，所述一次侧回液主路通断阀(116)与所述一次侧冷机泵驱装置(102)的进口相连通，所述一次侧冷却液调节装置(121)与所述换热单元(3)的一次侧出口相连通。
  16. 根据权利要求1～15任一项所述的液冷散热系统，其特征在于，所述液冷散热系统还包括管外漏液检测装置，所述管外漏液检测装置包括电阻传感器。
  17. 根据权利要求13～15任一项所述的液冷散热系统，其特征在于，所述一次侧冷机泵驱装置(102)包括室外冷机、一次侧冷却液驱动泵、定压补水装置和自动加药装置。
  18. 一种液冷散热系统，其特征在于，所述液冷散热系统包括：
    泵驱单元(204)，用于对所述泵驱单元(204)的进口侧执行抽水操作使得二次侧冷却单元(2)中由静压水箱(205)流向所述泵驱单元(204)的管路处于负压状态，以形成负压管路；
    静压水箱(205)，与外界大气压相连通，用于通过外界大气压与所述负压管路内的负压建立压力差，以通过所述压力差建立二次侧冷却单元(2)中冷却液的循环流动动力；
    负载单元(202)，用于在所述循环流动动力下将低温冷却液输送至负载并与负载执行热量交换后形成高温冷却液。
  19. 根据权利要求18所述的液冷散热系统，其特征在于，所述液冷散热系统包括：
    二次侧回液温度传感器(235)，用于采集二次侧回液单元(203)的温度值，并通过所采集的温度值与预设温度值及所述泵驱单元(204)建立温度反馈机制，响应于所述二次侧回液温度传感器(235)所采集的温度值高于所述预设温度值，提高所述泵驱单元(204)的抽水功率以降低所述负压管路的负压；并通过增大的所述压力差提高所述循环流动动力以进一步提高所述二次侧冷却单元(2)管路中的流量，使得所述二次侧回液温度传感器(235)的温度值低于所述预设温度值。
  20. 根据权利要求18所述的液冷散热系统，其特征在于，所述系统还包括：
    二次侧旁通调节单元(210)，用于响应于所述负载单元(202)的冷却液需求量低于所述泵驱单元(204)出口侧的最低流量，调整所述二次侧旁通调节单元(210)的阀门开度使得所述泵驱单元(204)出口侧超过所述负载单元(202)的冷却液需求量的流量流向排气灌(206)并返回至所述泵驱单元(204)进口侧。
PCT/CN2024/110629 2023-08-08 2024-08-08 液冷散热系统 Pending WO2025031442A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120320026A (zh) * 2025-06-17 2025-07-15 双一力(宁波)电池有限公司 液冷回路的注液系统和注液方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116723685B (zh) 2023-08-08 2023-11-03 苏州浪潮智能科技有限公司 液冷散热系统
CN117545236B (zh) * 2023-11-21 2026-01-02 厦门科华数能科技有限公司 一种液冷组件及机柜
CN117732811B (zh) * 2023-12-12 2026-02-27 北京中科仙络智算科技股份有限公司 一种液冷数据中心管路系统的快速冲洗方法
CN117399376B (zh) * 2023-12-13 2024-03-08 苏州元脑智能科技有限公司 一种服务器清洁系统以及数据中心
CN118338604B (zh) * 2024-04-10 2025-05-02 三河同飞制冷股份有限公司 一种液冷系统及在线换液方法
US20250358977A1 (en) * 2024-05-14 2025-11-20 Vertiv Corporation Server-level filtration of secondary fluid network for direct-to-chip cooling
CN118574394B (zh) * 2024-07-22 2025-01-28 深圳市度信科技有限公司 一种支持自动注液的液冷装置
CN121612522A (zh) * 2026-02-02 2026-03-06 苏州元脑智能科技有限公司 一种漏液检测装置和漏液检测方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108777925A (zh) * 2018-06-15 2018-11-09 比赫电气（太仓）有限公司 一种负压液冷系统
CN114286585A (zh) * 2021-11-26 2022-04-05 苏州浪潮智能科技有限公司 负压液冷系统
WO2022242509A1 (zh) * 2021-05-17 2022-11-24 华为技术有限公司 一种补液装置、散热系统及机柜
CN115623762A (zh) * 2022-12-06 2023-01-17 常州贺斯特科技股份有限公司 一种散热效率高的复合散热器
CN116723685A (zh) * 2023-08-08 2023-09-08 苏州浪潮智能科技有限公司 液冷散热系统

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336763A (en) * 1973-11-01 1982-06-29 Wolff Robert C Marine vessel transfer system
US4408960A (en) * 1981-09-11 1983-10-11 Logic Devices, Inc. Pneumatic method and apparatus for circulating liquids
US5278495A (en) * 1991-11-08 1994-01-11 Ncr Corporation Memory and apparatus for a thermally accelerated reliability testing
US6361697B1 (en) * 1995-01-10 2002-03-26 William S. Coury Decontamination reactor system and method of using same
US9027360B2 (en) * 2011-05-06 2015-05-12 International Business Machines Corporation Thermoelectric-enhanced, liquid-based cooling of a multi-component electronic system
US11317535B2 (en) * 2012-02-07 2022-04-26 Chilldyne, Inc. Computer cooling system and method of use
US9095078B2 (en) * 2012-08-16 2015-07-28 International Business Machines Corporation Actively controlling coolant-cooled cold plate configuration
US11234346B2 (en) * 2019-01-10 2022-01-25 Nooter/Eriksen, Inc. Passive control valve and system for regulating flow of fluid to a heat source in a computer processor system in response to the temperature of the source, and method
WO2020263648A1 (en) * 2019-06-24 2020-12-30 Exxonmobil Chemical Patents Inc. Desalter configuration integrated with steam cracker
CN114051356B (zh) * 2021-09-30 2024-01-16 苏州浪潮智能科技有限公司 负压液冷系统
CN114518794B (zh) * 2022-02-21 2024-12-24 广东海悟科技有限公司 高可靠性的液冷系统及控制方法
CN114364238B (zh) * 2022-03-18 2022-06-17 苏州浪潮智能科技有限公司 平稳切换负压液冷系统和平稳切换负压液冷控制方法
CN114967885B (zh) * 2022-06-05 2024-02-27 比赫电气（太仓）有限公司 一种服务器液冷系统冷量分配系统
CN114938613B (zh) * 2022-06-10 2025-05-23 广东海悟科技有限公司 液冷系统和液冷系统泄露位置定位检测方法
DE102022002696B3 (de) * 2022-07-25 2023-03-30 Wieland-Werke Aktiengesellschaft Kühlsystem zur Flüssigkeitsimmersionskühlung von elektronischen Bauteilen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108777925A (zh) * 2018-06-15 2018-11-09 比赫电气（太仓）有限公司 一种负压液冷系统
WO2022242509A1 (zh) * 2021-05-17 2022-11-24 华为技术有限公司 一种补液装置、散热系统及机柜
CN114286585A (zh) * 2021-11-26 2022-04-05 苏州浪潮智能科技有限公司 负压液冷系统
CN115623762A (zh) * 2022-12-06 2023-01-17 常州贺斯特科技股份有限公司 一种散热效率高的复合散热器
CN116723685A (zh) * 2023-08-08 2023-09-08 苏州浪潮智能科技有限公司 液冷散热系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120320026A (zh) * 2025-06-17 2025-07-15 双一力(宁波)电池有限公司 液冷回路的注液系统和注液方法

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