Secondary side circulation pipe network and data center liquid cooling system

Abstract

The invention relates to the technical field of data centers, and discloses a secondary side circulation pipe network and a data center liquid cooling system, the secondary side circulation pipe network comprises a circulation pipeline structure, a water quality monitoring system, a water quality purification system and a control system; the circulation pipeline structure is suitable for forming a circulation loop between the cooling capacity distribution unit and the liquid cooling cabinet; the water quality monitoring system is arranged on the circulating pipeline structure; the water quality purification system is arranged in parallel with the circulating pipeline structure and is used for diluting and purifying water in the circulating pipeline structure; the control system is connected with the water quality monitoring system and the water quality purification system and used for receiving water quality data transmitted by the water quality monitoring system and controlling connection and disconnection between the water quality purification system and the circulation pipeline structure according to the water quality data. According to the invention, real-time monitoring and data feedback of the water quality of the secondary side circulating pipe network are realized, and the ability of re-purifying and utilizing the deteriorated water quality and recovering good water quality is realized under the condition of no shutdown.

Description

Technical Field

[0001] The present invention relates to the technical field of data centers, and in particular to a secondary circulation pipe network and a data center liquid cooling system. Background Art

[0002] At present, cold plate liquid cooling servers are more popular than immersion servers due to their economical R&D costs and convenient maintenance, and have become the first choice for data center cooling structures. Because the server cost is high and the server cold plate flow channel is small, and in order to reduce the overall construction cost and facilitate water quality management, liquid cooling data centers use a dual-circulation water system of primary and secondary pipe networks; the primary pipe network includes a pipeline system from the cold distribution unit to the cooling tower or other external cooling equipment, which is mainly responsible for transferring heat from the secondary pipe network to the external environment to achieve heat discharge of the entire liquid cooling system; the secondary pipe network is mainly responsible for transporting cooling water from the cold distribution unit to the liquid cold plate or cold plate inside the server to achieve heat dissipation of high heat density components inside the server.

[0003] However, since pollutants often appear in the circulation pipeline of the secondary side pipeline network during the manufacturing or welding construction process, the water quality in the circulation pipeline will deteriorate and change color after circulating for a period of time, reducing the heat dissipation capacity, and even causing the server to shut down due to high temperature in severe cases. Summary of the invention

[0004] In view of this, the present invention provides a secondary side circulation pipe network and a data center liquid cooling system to solve the problem that the water quality deteriorates and changes color after the water in the circulation pipe circulates for a period of time, thereby reducing the heat dissipation capacity.

[0005] In the first aspect, the present invention provides a secondary side circulation network, including a circulation pipeline structure, a water quality monitoring system, a water quality purification system and a control system; the circulation pipeline structure is suitable for forming a circulation loop between a cooling capacity distribution unit and a liquid cooling cabinet; the water quality monitoring system is arranged on the circulation pipeline structure; the water quality purification system is arranged in parallel with the circulation pipeline structure, and is used to dilute and purify the water in the circulation pipeline structure; the control system is connected to both the water quality monitoring system and the water quality purification system, and is used to receive water quality data transmitted by the water quality monitoring system, and control the connection and disconnection between the water quality purification system and the circulation pipeline structure according to the water quality data.

[0006] Beneficial effects: through the setting of the water quality monitoring system, real-time monitoring of the water quality in the circulation pipeline structure is realized, and the water quality monitoring system is connected to the control system to transmit the monitored water quality data to the control system in real time; because the water quality purification system is arranged in parallel with the circulation pipeline structure, and the purification system is connected to the control system, when the water quality monitoring system detects that the water quality is up to standard, the connection channel between the water quality purification system and the circulation pipeline structure is disconnected, and the cooling water flows normally in the circulation pipeline structure without any additional processing burden, thereby avoiding unnecessary energy consumption and waste of resources in the purification process; when the water quality monitoring system detects that the water quality is not up to standard, the connection channel between the water quality purification system and the circulation pipeline structure is connected, and the water quality purification system dilutes and purifies the water in the circulation pipeline structure; real-time monitoring and instant feedback of the water quality of the secondary side pure water cooling medium are guaranteed, and instant intervention and recovery of deteriorated water quality are realized without interrupting the operation of the cooling system and interfering with the system water temperature stability and pressure balance, thereby ensuring the continuous and efficient operation of the cooling system.

[0007] In an optional embodiment, the circulation pipeline structure includes a secondary side return pipeline, the secondary side return pipeline includes a main return pipeline and multiple return branches; the main return pipeline is suitable for connection to a cooling distribution unit; one end of the return branch is connected to the main return pipeline, and the other end is suitable for connection to a liquid cooling cabinet; the water purification system is connected to the main return pipeline.

[0008] Beneficial effect: Since the system pressure will change during the purification process of cooling water, the water purification system is set on the main return water pipeline to purify the cooling water flowing out of the liquid cooling cabinet, thereby reducing the impact of excessive system pressure on the liquid cooling cabinet.

[0009] In an optional embodiment, the circulation pipeline structure includes a first pipeline structure, the first pipeline structure includes a first branch and a first on-off valve, the first branch is arranged on the main return water pipeline, and the first on-off valve is arranged on the first branch; the water purification system includes a second pipeline structure, a water storage tank and a pure water treatment system; the second pipeline structure includes a second branch, a second on-off valve and a third on-off valve, the second branch is connected to the main return water pipeline and is arranged in parallel with the first branch; the second on-off valve, the water storage tank and the third on-off valve are arranged on the first branch in sequence; pure water is stored in the water storage tank, and the pure water treatment system is connected to the water storage tank; the control system is connected to the first on-off valve, the second on-off valve, the third on-off valve and the pure water treatment system; the control system controls the on-off between the pure water treatment system and the water storage tank; the on-off of the first branch is controlled by controlling the first on-off valve; the on-off of the second branch is controlled by controlling the second on-off valve and the third on-off valve.

[0010] Beneficial effects: Through the setting of the first pipeline structure and the second pipeline structure, the parallel setting of the water purification system and the circulation pipeline structure is realized; and the control system realizes the control of the on-off of the first branch and the second branch through the first on-off valve, the second on-off valve and the third on-off valve; since pure water is stored in the water storage tank, when the second branch is connected to the circulation pipeline structure, the pure water stored in the water storage tank can enter the circulation pipeline structure, and circulate in the circulation pipeline structure to dilute the raw water in the circulation pipeline structure; since the control system controls the on-off between the pure water treatment system and the water storage tank, when the second branch is connected to the circulation pipeline structure, the control system can control the disconnection between the pure water treatment system and the water storage tank, thereby ensuring the circulation of the pure water stored in the water storage tank in the circulation pipeline structure and the dilution effect on the raw water in the circulation pipeline structure.

[0011] In an optional embodiment, the pure water treatment system includes a secondary side raw water pipeline, a water purification device and a water outlet pipeline; one end of the secondary side raw water pipeline is connected to a water storage tank; the inlet of the water purification device is connected to the other end of the secondary side raw water pipeline; one end of the water outlet pipeline is connected to the outlet of the water purification device, and the other end is connected to the water storage tank; a first power pump is provided on the water outlet pipeline; a first pressure sensor is provided on the water storage tank, and the first pressure sensor and the first power pump are both connected to a control system, and the control system is used to receive pressure data transmitted by the first pressure sensor, and control the start and stop of the first power pump according to the pressure data.

[0012] Beneficial effect: With the coordinated action of the first pressure sensor and the first power pump, the liquid level of pure water in the water tank is guaranteed; when the pressure in the water tank is monitored to be low, the control system controls the start-up of the first power pump or adjusts its operating state, and replenishes pure water to the water tank in time by enhancing the suction or replenishing function, thereby effectively avoiding the problem of insufficient pure water that cannot circulate in the circulation pipeline structure, and ensuring the continuity and stability of the water circulation in the entire secondary side circulation pipeline network; at the same time, when the pressure in the water tank is monitored to be high, the control system controls the first power pump to automatically slow down or stop further water supply to the water tank, effectively preventing the overload of the water tank, the risk of leakage and the increase of subsequent processing costs caused by excess pure water, and ensuring the rational use of water resources and the long-term stable operation of the system.

[0013] In an optional embodiment, the pure water treatment system also includes an external water source pipeline, one end of the external water source pipeline is connected to the inlet of the water purification device, and the other end is suitable for connection to an external water source; a fourth on-off valve is provided on the external water source pipeline; a raw water tank is provided at the inlet of the water purification device, and a first liquid level sensor is provided on the raw water tank; the first liquid level sensor and the fourth on-off valve are both connected to a control system, and the control system is used to receive liquid level data transmitted by the first liquid level sensor, and control the on-off of the external water source pipeline by controlling the fourth on-off valve according to the liquid level data.

[0014] Beneficial effects: Through the setting of the external water source pipeline, it is possible to directly introduce the external water source into the secondary side circulation network without stopping the machine, thereby realizing the water replenishment operation of the secondary side circulation network; and through the setting of the first liquid level sensor and the first on-off valve, it is possible to automatically adjust the water replenishment rate according to the actual needs of the secondary side circulation network, thereby realizing timely water replenishment of the secondary side circulation network, and preventing pressure surge or system overload caused by excessive water replenishment, thereby ensuring the accuracy and safety of the water replenishment operation.

[0015] In an optional embodiment, a second liquid level sensor is provided on the water storage tank, and a second power pump is provided on the secondary side raw water pipeline; the second liquid level sensor and the second power pump are both connected to the control system, and the control system is used to receive the liquid level data transmitted by the second liquid level sensor, and control the start and stop of the second power pump according to the liquid level data.

[0016] Beneficial effect: Through the setting of the second liquid level sensor and the second power pump, the liquid level height in the water tank is monitored. When the second liquid level sensor detects that the liquid level in the water tank drops below the preset safety threshold, the control system controls the second power pump to shut down, preventing the second power pump from continuing to pump cooling water in the water tank into the water purification device, effectively avoiding the idling of the second power pump caused by insufficient cooling water in the water tank, not only protecting the second power pump from wear and damage, extending its service life, but also preventing energy waste and safety hazards that may be caused by idling.

[0017] In an optional embodiment, the water storage tank is also provided with a breathing valve, which is arranged above the water storage tank.

[0018] Beneficial effects: By setting a breathing valve above the water tank, it can automatically open or close according to the pressure difference between the inside and outside of the water tank, so as to realize timely exchange of air in the water tank and the external environment; when the internal pressure of the water tank increases due to liquid level changes, temperature changes or external pressure fluctuations, the breathing valve will automatically open to release excess pressure to prevent the tank from being damaged due to overpressure; when the pressure in the water tank is lower than that in the outside world, the breathing valve allows outside air to enter to prevent the tank from being deformed due to negative pressure; the dynamic balance of the internal pressure environment of the water tank is optimized to ensure that the water tank can operate stably under various working conditions, while protecting the tank structure from unnecessary pressure shocks.

[0019] In an optional implementation, the first pressure sensor is connected to the water storage tank via a first connecting pipe, and a first switch valve is provided on the first connecting pipe.

[0020] Beneficial effect: Through the arrangement of the first connecting pipe and the first switch valve, when the first pressure sensor malfunctions and needs to be replaced, the first switch valve can be closed to disconnect the first pressure sensor from the water tank. During the replacement of the first pressure sensor, external contaminants can be prevented from entering the water tank, and liquid leakage that may occur when the liquid level in the water tank is too high can be avoided.

[0021] In an optional implementation, a one-way valve is provided on the water outlet pipeline.

[0022] Beneficial effect: By arranging a one-way valve on the water outlet pipe, the liquid in the water storage tank is prevented from flowing back into the water purification device, thereby polluting the purified water in the water purification device.

[0023] In an optional embodiment, the circulation pipeline structure includes a secondary side water supply pipeline, the secondary side water supply pipeline includes a main water supply pipeline and multiple water supply branches; the main water supply pipeline is suitable for connecting to a cooling distribution unit; one end of the water supply branch is connected to the main water supply pipeline, and the other end is suitable for connecting to a liquid cooling cabinet; the water quality monitoring system is connected to the main water supply pipeline.

[0024] Beneficial effect: By setting the water quality monitoring system on the main water supply pipeline, the water quality of the cooling water is monitored before it enters the liquid cooling cabinet for heat exchange, thereby avoiding the temperature drift interference of the water quality monitoring system caused by the increase in cooling water temperature, preventing the monitoring data from deviating, and ensuring the accuracy of the water quality monitoring system.

[0025] In an optional embodiment, the water quality monitoring system includes a monitoring liquid storage tank and a monitoring component; the monitoring liquid storage tank is connected to the circulation pipeline structure; the monitoring component is fixed on the monitoring liquid storage tank, and the monitoring probe of the monitoring component is extended into the monitoring liquid storage tank and contacts with the coolant in the monitoring liquid storage tank.

[0026] Beneficial effect: By setting up the monitoring storage tank, when the water flows through the circulation pipeline structure, the monitoring storage tank can temporarily store a certain amount of water, thereby stabilizing the water flow, reducing the impact of water flow fluctuations or pressure changes on the monitoring components, and improving the stability and accuracy of water quality monitoring.

[0027] In an optional embodiment, the water quality monitoring system also includes a third pipeline structure, which includes a third branch, a first manual valve and a second manual valve; the third branch is arranged in parallel with the main water supply pipeline; the first manual valve, the monitoring liquid storage tank and the second manual valve are arranged in sequence on the third branch.

[0028] Beneficial effect: By installing the monitoring liquid storage tank on the third branch, the requirements of low flow and low pressure test environment can be met; and because the first manual valve, the monitoring liquid storage tank and the second manual valve are arranged in sequence on the third branch, when the monitoring component needs to be calibrated, replaced or maintained, the operator only needs to close the first manual valve and the second manual valve to cut off the fluid channel between the monitoring liquid storage tank and the main water supply pipeline to achieve local isolation; this process does not need to interrupt the normal operation of the entire secondary side circulation network, effectively ensuring the continuity of the operation of the secondary side circulation network.

[0029] In an optional embodiment, the monitoring liquid storage tank includes a baffle, which is located between the water inlet and the water outlet of the monitoring liquid storage tank and is spaced apart from the top of the monitoring liquid storage tank; the monitoring component is located on the side of the baffle close to the water inlet of the monitoring liquid storage tank, and the distance between the monitoring probe of the monitoring component and the bottom of the monitoring liquid storage tank is less than the height of the baffle.

[0030] Beneficial effect: Since the baffle is spaced apart from the top of the monitoring liquid storage tank, it is ensured that when the cooling water flows into the monitoring liquid storage tank and reaches or exceeds the height of the baffle, it can continue to flow through the water outlet, thereby maintaining the circulation of the cooling water; by arranging the monitoring component on the side of the baffle close to the water inlet, and the distance between the monitoring probe of the monitoring component and the bottom of the monitoring liquid storage tank is less than the height of the baffle, when the secondary side circulation network is drained, the side of the baffle close to the water inlet can continuously maintain a certain liquid level, which can cover and protect the monitoring probe of the monitoring component, thereby preventing the monitoring probe of the monitoring component from being exposed to the air for a long time and suffering the risk of oxidation.

[0031] In an optional embodiment, the monitoring liquid storage tank includes an exhaust valve, and the exhaust valve is arranged on the top of the monitoring liquid storage tank.

[0032] Beneficial effect: By setting an exhaust valve on the monitoring liquid storage tank, the problem of gas accumulation that may be generated in the monitoring liquid storage tank during the storage process can be avoided, ensuring the smooth flow of cooling water and the stable operation of the system; preventing the excessive gas content in the monitoring liquid storage tank from affecting the test data, and reducing the oxygen content in the cooling water in the monitoring liquid storage tank to protect the monitoring probe of the monitoring component.

[0033] In an optional embodiment, the monitoring liquid storage tank includes a sampling valve, and the sampling valve is arranged below the monitoring liquid storage tank.

[0034] Beneficial effects: By installing a sampling valve on the monitoring liquid storage tank, it is possible to implement other data tests that cannot be completed by online monitoring, and to compare the sample analysis results obtained by the sampling valve with the monitoring data of the monitoring component, so as to promptly discover and correct deviations or errors in the online monitoring of the monitoring component, and promptly repair, adjust or replace the monitoring component to ensure the accuracy and credibility of the online test results.

[0035] In an optional embodiment, it also includes a filtering structure, the filtering structure includes a filtering state monitoring unit and a filtering pipeline; the filtering state monitoring unit includes a second pressure sensor and a third pressure sensor, and the second pressure sensor and the third pressure sensor are arranged in sequence on the circulation pipeline structure; the filtering pipeline is located between the second pressure sensor and the third pressure sensor, and is connected to the circulation pipeline structure; and a coarse filter is provided on the filtering pipeline; the second pressure sensor and the third pressure sensor are both connected to the control system, and transmit the inlet pressure and the outlet pressure to the control system, and the control system determines the filter element state of the coarse filter by the difference between the inlet pressure and the outlet pressure.

[0036] Beneficial effects: By setting a coarse filter in the filter pipeline, suspended particles and various impurities in the cooling water are effectively removed; the setting of the filter status monitoring unit realizes real-time monitoring of the working status of the coarse filter. When the pressure difference between the inlet and outlet is monitored to exceed the preset threshold, the control system will automatically remind the relevant maintenance personnel to clean or replace the coarse filter element to ensure the continuous and efficient operation of the filtration structure.

[0037] In an optional embodiment, at least two filter pipelines are provided, and the at least two filter pipelines are arranged in parallel; a third manual valve and a fourth manual valve are also provided on the filter pipeline, and the coarse filter is located between the third manual valve and the fourth manual valve.

[0038] Beneficial effect: The third manual valve and the fourth manual valve cooperate to realize the control of the on-off of the filter pipeline. By setting up at least two filter pipelines, a dual filter pipeline design of one for use and one for backup is realized. While the secondary side circulation pipeline network maintains continuous operation, the filter element can be cleaned and replaced and the filter pipeline can be maintained.

[0039] In an optional embodiment, a needle valve is further provided on the filter pipeline, and the needle valve is arranged adjacent to the coarse filter.

[0040] Beneficial effects: By setting a needle valve on the filter pipeline, the pressure accumulated in the coarse filter can be safely released to ensure pressure balance during system operation; and the cooling water retained inside the coarse filter can be removed to prevent performance degradation and potential corrosion risks caused by cooling water accumulation, thereby maintaining the cleanliness and long-term operating efficiency of the filtration system; and ensure that there will be no problems such as pure water outflow during filter element replacement.

[0041] In an optional implementation, the second pressure sensor is connected to the circulation pipeline structure via a second connecting pipe, and a second switch valve is provided on the second connecting pipe.

[0042] Beneficial effect: Through the arrangement of the second connecting pipe and the second switch valve, when the second pressure sensor malfunctions and needs to be replaced, the second switch valve can be closed to disconnect the second pressure sensor from the circulation pipeline structure. During the replacement of the second pressure sensor, external contaminants can be prevented from entering the circulation pipeline structure, and liquid leakage in the circulation pipeline structure can be avoided, and the replacement of the second pressure sensor can be achieved without stopping the machine.

[0043] In an optional implementation, the third pressure sensor is connected to the circulation pipeline structure through the second connecting pipe, and a third switch valve is provided on the third connecting pipe.

[0044] Beneficial effect: Through the arrangement of the third connecting pipe and the third switch valve, when the third pressure sensor malfunctions and needs to be replaced, the third switch valve can be closed to disconnect the third pressure sensor from the circulation pipeline structure. During the replacement of the third pressure sensor, external pollutants can be prevented from entering the circulation pipeline structure, and liquid leakage in the circulation pipeline structure can be avoided, and the replacement of the third pressure sensor can be achieved without stopping the machine.

[0045] In the second aspect, the present invention also provides a data center liquid cooling system, including a cooling capacity distribution unit, the above-mentioned secondary side circulation pipeline network and the primary side circulation pipeline network; the above-mentioned secondary side circulation pipeline network circulates and connects the cooling capacity distribution unit with the liquid cooling cabinet; the primary side circulation pipeline network circulates and connects the cooling capacity distribution unit with the external cooling equipment.

[0046] Because the data center liquid cooling system includes a secondary side circulation pipeline network, it has the same effect as the secondary side circulation pipeline network and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 This is a schematic diagram of the overall structure of a data center liquid cooling system according to an embodiment of the present invention;

[0049] Figure 2 It is a schematic structural diagram of a water purification system according to an embodiment of the present invention;

[0050] Figure 3 It is a structural schematic diagram of a pure water treatment system according to an embodiment of the present invention;

[0051] Figure 4 Schematic diagram of the structure of a water quality monitoring system and a filtering structure according to an embodiment of the present invention.

[0052] Description of reference numerals:

[0053] 1. Circulation pipeline structure; 111. First branch; 112. First on-off valve; 12. Secondary return pipeline; 121. Main return pipeline; 122. Return branch; 13. Secondary water supply pipeline; 131. Main water supply pipeline; 132. Water supply branch; 2. Water quality monitoring system; 21. Monitoring liquid storage tank; 211. Baffle; 212. Exhaust valve; 213. Sampling valve; 221. Conductivity sensor; 222. PH sensor; 223. Turbidity sensor; 224. Chemical oxygen demand online detection sensor; 231. The third branch; 232, the first manual valve; 233, the second manual valve; 3, water purification system; 311, the second branch; 312, the second on-off valve; 313, the third on-off valve; 32, the water storage tank; 321, the first pressure sensor; 322, the second liquid level sensor; 323, the breathing valve; 33, the pure water treatment system; 331, the secondary side raw water pipeline; 33201, the raw water tank; 33202, the first liquid level sensor; 33203, the booster pump; 33204, the sand filter structure; 33205, the carbon filter structure; 3 3206, softener; 33207, antiscalant structure; 33208, precision filter; 33209, first high-pressure pump; 33210, primary RO permeation structure; 33211, pure water tank; 33212, second high-pressure pump; 33213, PH adjustment structure; 33214, secondary RO permeation structure; 33215, chemical cleaning structure; 33216, ultrapure water tank; 33217, overflow pipeline; 33218, fifth on-off valve; 333, water outlet pipeline; 334, first power pump; 335, external Pipeline for connecting water source; 336, fourth on-off valve; 337, second power pump; 338, one-way valve; 411, second pressure sensor; 4111, first on-off valve; 412, third pressure sensor; 42, filter pipeline; 43, coarse filter; 44, third manual valve; 45, fourth manual valve; 46, needle valve; 5, cooling capacity distribution unit; 6, liquid cooling cabinet; 71, water cooling unit; 72, circulation pump; 73, constant pressure water supply system; 74, softening and dosing system; 75, primary side water supply pipeline; 76, primary side return pipeline. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0055] Combine the following Figures 1 to 4 , describing an embodiment of the present invention.

[0056] According to an embodiment of the present invention, on the one hand, a secondary side circulation network is provided, including a circulation pipeline structure 1, a water quality monitoring system 2, a water quality purification system 3 and a control system; the circulation pipeline structure 1 is suitable for forming a circulation loop between a cooling capacity distribution unit 5 and a liquid cooling cabinet 6; the water quality monitoring system 2 is arranged on the circulation pipeline structure 1; the water quality purification system 3 is arranged in parallel with the circulation pipeline structure 1, and is used to dilute and purify the water in the circulation pipeline structure 1; the control system is connected to both the water quality monitoring system 2 and the water quality purification system 3, and is used to receive water quality data transmitted by the water quality monitoring system 2, and control the connection and disconnection between the water quality purification system 3 and the circulation pipeline structure 1 according to the water quality data.

[0057] By setting up the water quality monitoring system 2, real-time monitoring of the water quality in the circulation pipeline structure 1 is achieved, and the water quality monitoring system 2 is connected to the control system to transmit the monitored water quality data to the control system in real time; because the water quality purification system 3 is set in parallel with the circulation pipeline structure 1, and the purification system is connected to the control system, when the water quality monitoring system 2 detects that the water quality is up to standard, the connection channel between the water quality purification system 3 and the circulation pipeline structure 1 is disconnected, and the cooling water flows normally in the circulation pipeline structure 1 without any additional processing burden, thereby avoiding unnecessary energy consumption and waste of resources in the purification process; when the water quality monitoring system 2 detects that the water quality is not up to standard, the connection channel between the water quality purification system 3 and the circulation pipeline structure 1 is connected, and the water quality purification system 3 dilutes and purifies the water in the circulation pipeline structure 1; real-time monitoring and instant feedback of the water quality of the secondary side pure water cooling medium are guaranteed, and instant intervention and recovery of deteriorated water quality are achieved without interrupting the operation of the cooling system and interfering with the system water temperature stability and pressure balance, thereby ensuring the continuous and efficient operation of the cooling system.

[0058] In one embodiment, the circulation pipeline structure 1 includes a secondary side return water pipeline 12, and the secondary side return water pipeline 12 includes a main return water pipeline 121 and multiple return water branches 122; the main return water pipeline 121 is suitable for connecting to the cooling distribution unit 5; one end of the return water branch 122 is connected to the main return water pipeline 121, and the other end is suitable for connecting to the liquid cooling cabinet 6; the water purification system 3 is connected to the main return water pipeline 121.

[0059] Since the system pressure will change during the process of purifying the cooling water by the water purification system 3, the water purification system 3 is set on the main return water pipeline 121 to purify the cooling water flowing out of the liquid cooling cabinet 6, thereby reducing the impact of excessive system pressure on the liquid cooling cabinet 6.

[0060] In one embodiment, the circulation pipeline structure 1 includes a first pipeline structure, the first pipeline structure includes a first branch 111 and a first on-off valve 112, the first branch 111 is arranged on the main return water pipeline 121, and the first on-off valve 112 is arranged on the first branch 111; the water purification system 3 includes a second pipeline structure, a water storage tank 32 and a pure water treatment system 33; the second pipeline structure includes a second branch 311, a second on-off valve 312 and a third on-off valve 313, the second branch 311 is connected to the main return water pipeline 121, and is arranged in parallel with the first branch 111; the second on-off valve 312 is arranged on the second branch 111; ... The shut-off valve 312, the water storage tank 32 and the third on-off valve 313 are sequentially arranged on the first branch 111; pure water is stored in the water storage tank 32, and the pure water treatment system 33 is connected to the water storage tank 32; the control system is connected to the first on-off valve 112, the second on-off valve 312, the third on-off valve 313 and the pure water treatment system 33; the control system controls the on-off between the pure water treatment system 33 and the water storage tank 32; the on-off of the first branch 111 is controlled by controlling the first on-off valve 112; the on-off of the second branch 311 is controlled by controlling the second on-off valve 312 and the third on-off valve 313.

[0061] By setting the first pipeline structure and the second pipeline structure, the parallel setting of the water purification system 3 and the circulation pipeline structure 1 is realized; and the control system realizes the control of the on-off of the first branch 111 and the second branch 311 through the first on-off valve 112, the second on-off valve 312 and the third on-off valve 313; since pure water is stored in the water storage tank 32, when the second branch 311 is connected to the circulation pipeline structure 1, the pure water stored in the water storage tank 32 can enter the circulation pipeline structure 1 and circulate in the circulation pipeline structure 1 to dilute the raw water in the circulation pipeline structure 1; since the control system controls the on-off between the pure water treatment system 33 and the water storage tank 32, when the second branch 311 is connected to the circulation pipeline structure 1, the control system can control the disconnection between the pure water treatment system 33 and the water storage tank 32, thereby ensuring the circulation of the pure water stored in the water storage tank 32 in the circulation pipeline structure 1 and the dilution effect on the raw water in the circulation pipeline structure 1.

[0062] In a specific implementation, when the water quality data reaches the set standard, the control system controls the circulation of the first branch 111 by controlling the first on-off valve 112 to open; controls the disconnection of the second branch 311 by controlling the second on-off valve 312 to close and the third on-off valve 313 to close; and at this time, the control system controls the pure water treatment system 33 to disconnect from the water storage tank 32.

[0063] When the water quality data does not meet the set standard, the control system controls the first branch 111 to be disconnected by controlling the first on-off valve 112 to be closed, and controls the circulation of the second branch 311 by controlling the second on-off valve 312 to be opened and the third on-off valve 313 to be opened, and the pure water in the water storage tank 32 enters the circulation pipeline structure 1 for circulation, diluting the water in the circulation pipeline structure 1, and at this time, the control system controls the pure water treatment system 33 to be disconnected from the water storage tank 32; when the connection time between the second branch 311 and the circulation pipeline structure 1 reaches the preset time, the control system controls the first on-off valve 312 to be opened, and the second branch 311 is opened. 112 is opened to control the circulation of the first branch 111, and the second branch 311 is disconnected by controlling the second on-off valve 312 to be closed and the third on-off valve 313 to be closed. At this time, the control system controls the pure water treatment system 33 to be connected with the water storage tank 32 to purify the liquid in the water storage tank 32. After the treatment is completed, the control system controls the second branch 311 to be connected with the circulation pipeline structure 1 again, and the pure water in the water storage tank 32 enters the circulation pipeline structure 1 again, and the cooling water in the circulation pipeline structure 1 is diluted for a second time, and then the above steps are repeated until the water quality meets the standard.

[0064] In a specific implementation, since the water purification system 3 is arranged in parallel with the circulation pipeline structure 1, when water purification treatment is required, it is only necessary to control the water purification system 3 to be connected with the circulation pipeline structure 1 through the control system, without emptying and replacing the internal cooling water, so as to achieve dilution and purification of the cooling water in the circulation pipeline structure 1; compared with the traditional method of completely emptying and replacing the cooling water in the pipeline network to achieve the purpose of improving water quality, it effectively saves water resources and reduces the burden of wastewater treatment and discharge, while greatly reducing the direct material cost and operating cost caused by replacing cooling water, thereby achieving a double improvement in economic and environmental benefits.

[0065] In a specific implementation, the first on-off valve 112 , the second on-off valve 312 , and the third on-off valve 313 are all electric ball valves.

[0066] In one embodiment, the pure water treatment system 33 includes a secondary side raw water pipeline 331, a water purification device and a water outlet pipeline 333; one end of the secondary side raw water pipeline 331 is connected to the water storage tank 32; the inlet of the water purification device is connected to the other end of the secondary side raw water pipeline 331; one end of the water outlet pipeline 333 is connected to the outlet of the water purification device, and the other end is connected to the water storage tank 32; a first power pump 334 is provided on the water outlet pipeline 333; a first pressure sensor 321 is provided on the water storage tank 32, and the first pressure sensor 321 and the first power pump 334 are both connected to the control system, and the control system is used to receive the pressure data transmitted by the first pressure sensor 321, and control the start and stop of the first power pump 334 according to the pressure data.

[0067] With the coordinated action of the first pressure sensor 321 and the first power pump 334, the liquid level of the pure water in the water tank 32 is guaranteed; when it is monitored that the pressure in the water tank 32 is too low, the control system controls the start-up of the first power pump 334 or adjusts its operating state, and replenishes pure water to the water tank 32 in time by enhancing the suction or replenishing function, thereby effectively avoiding the problem that the pure water cannot circulate in the circulation pipeline structure 1 due to too little pure water, and ensuring the continuity and stability of the water circulation in the entire secondary side circulation pipeline network; at the same time, when it is monitored that the pressure in the water tank 32 is too high, the control system controls the first power pump 334 to automatically slow down or stop further water supply to the water tank 32, effectively preventing the overload of the water tank 32, the risk of leakage and the increase of subsequent processing costs caused by excess pure water, and ensuring the rational use of water resources and the long-term stable operation of the system.

[0068] Specifically, the first power pump 334 is a diaphragm pump.

[0069] In a specific embodiment, the water purification device includes a main line, a booster pump 33203, a sand filter structure 33204, a carbon filter structure 33205, a softener 33206, an antiscalant structure 33207, a precision filter 33208, a first high-pressure pump 33209, a primary RO permeation structure 33210, a pure water tank 33211, a second high-pressure pump 33212, a PH adjustment structure 33213, a secondary RO permeation structure 33214, a chemical cleaning structure 33215, and an ultrapure water tank 33216; the main line is connected to the outlet end of the raw water tank 33201, the booster pump 33203, the sand filter structure 33204, the carbon filter structure 33205, the softener 33206, the precision filter 33208, the first high-pressure pump 33209, the primary RO permeation structure 3321 0. The pure water tank 33211, the second high-pressure pump 33212, the secondary RO permeation structure 33214 and the ultrapure water tank 33216 are sequentially arranged in series on the main pipe; the scale inhibitor structure 33207 is located between the softener 33206 and the precision filter 33208, and is connected to the main pipe through the fourth connecting pipe; the chemical cleaning structure 33215 is arranged on the fifth connecting pipe, and one end of the fifth connecting pipe is located between the primary RO permeation structure 33210 and the pure water tank 33211, and is connected to the main pipe; the other end is located between the secondary RO permeation structure 33214 and the ultrapure water tank 33216, and is connected to the main pipe; the PH adjustment structure 33213 is located between the second high-pressure pump 33212 and the secondary RO permeation structure 33214, and is connected to the main pipe through the sixth connecting pipe.

[0070] In one embodiment, the pure water treatment system 33 also includes an external water source pipeline 335, one end of the external water source pipeline 335 is connected to the inlet of the water purification device, and the other end is suitable for connection to an external water source; a fourth on-off valve 336 is provided on the external water source pipeline 335; a raw water tank 33201 is provided at the inlet of the water purification device, and a first liquid level sensor 33202 is provided on the raw water tank 33201; the first liquid level sensor 33202 and the fourth on-off valve 336 are both connected to a control system, and the control system is used to receive the liquid level data transmitted by the first liquid level sensor 33202, and control the on-off of the external water source pipeline 335 by controlling the fourth on-off valve 336 according to the liquid level data.

[0071] By setting up the external water source pipeline 335, it is possible to directly introduce the external water source into the secondary side circulation network without stopping the machine, thereby realizing the water replenishment operation of the secondary side circulation network; and by setting up the first liquid level sensor 33202 and the first on-off valve 112, it is possible to automatically adjust the water replenishment rate according to the actual demand of the secondary side circulation network, thereby realizing timely water replenishment of the secondary side circulation network, and preventing pressure surge or system overload caused by excessive water replenishment, thereby ensuring the accuracy and safety of the water replenishment operation.

[0072] Preferably, a plurality of leakage monitoring devices are respectively provided on different connecting pipe sections of the circulation pipeline structure 1 of the secondary side circulation network, which are used to monitor the leakage of different connecting pipe sections; and each leakage monitoring device is integrated with an independent alarm unit, realizing the integrated setting of monitoring and response; a plurality of leakage monitoring devices are connected to the control system. Once a leakage monitoring device detects a leakage event in its corresponding connecting pipe section, the leakage monitoring device transmits the leakage information to the control system. After receiving the leakage information, the control system controls the corresponding alarm unit to send an alarm signal, thereby ensuring the accuracy and timeliness of fault identification, so that the operator can intuitively and quickly locate the specific connecting pipe section where the leakage occurs, and repair or replace the damaged connecting pipe section, so as to prevent the secondary side circulation network from leaking again after the water replenishment operation is completed, thereby ensuring the stable operation and long-term reliability of the entire network.

[0073] In a specific implementation, when the secondary side circulation network needs to perform purification operation, in order to prevent the problem of excessively high liquid level in the raw water tank 33201, an overflow pipe 33217 is added to the bottom of the raw water tank 33201, and a fifth on-off valve 33218 is provided on the overflow pipe 33217. The control system controls the on-off of the overflow pipe 33217 by controlling the fifth on-off valve 33218 through the liquid level data received from the first liquid level sensor 33202.

[0074] Specifically, the fourth on-off valve 336 and the fifth on-off valve 33218 are both solenoid valves.

[0075] In one embodiment, a second liquid level sensor 322 is provided on the water storage tank 32, and a second power pump 337 is provided on the secondary side raw water pipeline 331; the second liquid level sensor 322 and the second power pump 337 are both connected to the control system, and the control system is used to receive the liquid level data transmitted by the second liquid level sensor 322, and control the start and stop of the second power pump 337 according to the liquid level data.

[0076] By setting up the second liquid level sensor 322 and the second power pump 337, the liquid level height in the water tank 32 is monitored. When the second liquid level sensor 322 detects that the liquid level in the water tank 32 drops below the preset safety threshold, the control system controls the second power pump 337 to shut down, preventing the second power pump 337 from continuing to pump cooling water in the water tank 32 into the water purification device, thereby effectively avoiding the idling of the second power pump 337 due to insufficient cooling water in the water tank 32. This not only protects the second power pump 337 from wear and damage and extends its service life, but also prevents energy waste and safety hazards that may be caused by idling.

[0077] Specifically, the second power pump 337 is a diaphragm pump.

[0078] In one embodiment, a breathing valve 323 is further provided on the water storage tank 32 , and the breathing valve 323 is arranged above the water storage tank 32 .

[0079] By setting a breathing valve 323 above the water tank 32, it can be automatically opened or closed according to the pressure difference between the inside and outside of the water tank 32, so as to realize timely exchange of air in the water tank 32 and the external environment; when the internal pressure of the water tank 32 increases due to liquid level changes, temperature changes or external pressure fluctuations, the breathing valve 323 will automatically open to release excess pressure to prevent the tank body from being damaged due to overpressure; when the pressure in the water tank 32 is lower than that in the outside, the breathing valve 323 allows outside air to enter to prevent the tank body from being deformed due to negative pressure; the dynamic balance of the internal pressure environment of the water tank 32 is optimized to ensure that the water tank 32 can operate stably under various working conditions, while protecting the tank structure from unnecessary pressure shocks.

[0080] In one embodiment, the first pressure sensor 321 is connected to the water storage tank 32 via a first connecting pipe, and a first switch valve 4111 is provided on the first connecting pipe.

[0081] Through the arrangement of the first connecting pipe and the first switch valve 4111, when the first pressure sensor 321 malfunctions and needs to be replaced, the first switch valve 4111 can be closed to disconnect the first pressure sensor 321 from the water tank 32. During the replacement of the first pressure sensor 321, it can prevent external pollutants from entering the water tank 32 and avoid liquid leakage that may occur when the liquid level in the water tank 32 is too high.

[0082] Specifically, the first switch valve 4111 is a manual ball valve.

[0083] In one embodiment, a one-way valve 338 is provided on the water outlet pipe 333 .

[0084] By providing a one-way valve 338 on the water outlet pipe 333, the liquid in the water storage tank 32 is prevented from flowing back into the water purification device and polluting the purified water in the water purification device.

[0085] In one embodiment, the circulation pipeline structure 1 includes a secondary water supply pipeline 13, the secondary water supply pipeline 13 includes a main water supply pipeline 131 and multiple water supply branches 132; the main water supply pipeline 131 is suitable for connecting to the cooling distribution unit 5; one end of the water supply branch 132 is connected to the main water supply pipeline 131, and the other end is suitable for connecting to the liquid cooling cabinet 6; the water quality monitoring system 2 is connected to the main water supply pipeline 131.

[0086] By setting the water quality monitoring system 2 on the main water supply pipeline 131, the water quality of the cooling water is monitored before the cooling water enters the liquid cooling cabinet 6 for heat exchange, thereby avoiding temperature drift interference to the water quality monitoring system 2 caused by the increase in cooling water temperature, preventing deviations in the monitoring data, and ensuring the accuracy of the monitoring of the water quality monitoring system 2.

[0087] In one embodiment, the water quality monitoring system 2 includes a monitoring liquid storage tank 21 and a monitoring component; the monitoring liquid storage tank 21 is connected to the circulation pipeline structure 1; the monitoring component is fixed on the monitoring liquid storage tank 21, and the monitoring probe of the monitoring component is extended into the monitoring liquid storage tank 21 and contacts with the coolant in the monitoring liquid storage tank 21.

[0088] By setting up the monitoring liquid storage tank 21, when the water flows through the circulation pipeline structure 1, the monitoring liquid storage tank 21 can temporarily store a certain amount of water, thereby stabilizing the water flow, reducing the impact of water flow fluctuations or pressure changes on the monitoring components, and improving the stability and accuracy of water quality monitoring.

[0089] In a specific embodiment, the monitoring component includes a conductivity sensor 221, a pH sensor 222, a turbidity sensor 223 and a chemical oxygen demand (COD) online detection sensor, and the conductivity sensor 221, the pH sensor 222, the turbidity sensor 223 and the chemical oxygen demand (COD) online detection sensor 224 are sequentially arranged on the monitoring liquid storage tank 21.

[0090] In one embodiment, the water quality monitoring system 2 also includes a third pipeline structure, which includes a third branch 231, a first manual valve 232 and a second manual valve 233; the third branch 231 is arranged in parallel with the main water supply pipeline 131; the first manual valve 232, the monitoring liquid storage tank 21 and the second manual valve 233 are arranged on the third branch 231 in sequence.

[0091] By installing the monitoring liquid storage tank 21 on the third branch 231, the requirements of low flow and low pressure test environment can be met; and since the first manual valve 232, the monitoring liquid storage tank 21 and the second manual valve 233 are sequentially arranged on the third branch 231, when the monitoring component needs to be calibrated, replaced or maintained, the operator only needs to close the first manual valve 232 and the second manual valve 233 to cut off the fluid channel between the monitoring liquid storage tank 21 and the main water supply pipeline 131 to achieve local isolation; this process does not require interrupting the normal operation of the entire secondary side circulation network, effectively ensuring the continuity of the operation of the secondary side circulation network.

[0092] In one embodiment, the monitoring liquid storage tank 21 includes a baffle 211, which is located between the water inlet and the water outlet of the monitoring liquid storage tank 21 and is spaced apart from the top of the monitoring liquid storage tank 21; the monitoring component is located on the side of the baffle 211 close to the water inlet of the monitoring liquid storage tank 21, and the distance between the monitoring probe of the monitoring component and the bottom of the monitoring liquid storage tank 21 is less than the height of the baffle 211.

[0093] Since the baffle 211 is spaced apart from the top of the monitoring liquid storage tank 21, it is ensured that when the cooling water flows into the monitoring liquid storage tank 21 and reaches or exceeds the height of the baffle 211, it can continue to flow through the water outlet, thereby maintaining the circulation of the cooling water; by arranging the monitoring component on the side of the baffle 211 close to the water inlet, and the distance between the monitoring probe of the monitoring component and the bottom of the monitoring liquid storage tank 21 is less than the height of the baffle 211, when the secondary side circulation network is drained, since the side of the baffle 211 close to the water inlet can continuously maintain a certain liquid level, the monitoring probe of the monitoring component can be covered and protected, thereby preventing the monitoring probe of the monitoring component from being exposed to the air for a long time and suffering the risk of oxidation.

[0094] In a specific implementation, the water outlet is disposed below the monitoring liquid storage tank 21 , and the distance between the water outlet and the bottom of the monitoring liquid storage tank 21 is smaller than the height of the baffle 211 .

[0095] In one embodiment, the monitoring liquid storage tank 21 includes an exhaust valve 212 , which is disposed on the top of the monitoring liquid storage tank 21 .

[0096] By setting an exhaust valve 212 on the monitoring liquid storage tank 21, the problem of gas accumulation that may be generated in the liquid storage process of the monitoring liquid storage tank 21 can be avoided, ensuring the smooth flow of cooling water and the stable operation of the system; preventing the excessive gas content in the monitoring liquid storage tank 21 from affecting the test data, and reducing the oxygen content in the cooling water in the monitoring liquid storage tank 21 to protect the monitoring probe of the monitoring component.

[0097] In one embodiment, the monitoring liquid storage tank 21 includes a sampling valve 213 , and the sampling valve 213 is disposed below the monitoring liquid storage tank 21 .

[0098] By installing a sampling valve 213 on the monitoring liquid storage tank 21, it is possible to implement other data tests that cannot be completed by online monitoring, and to compare the sample analysis results obtained by the sampling valve 213 with the monitoring data of the monitoring component, so as to promptly discover and correct deviations or errors in the online monitoring of the monitoring component, and promptly repair, adjust or replace the monitoring component to ensure the accuracy and credibility of the online test results.

[0099] In one embodiment, a filtering structure is also included, and the filtering structure includes a filtering state monitoring unit and a filtering pipeline 42; the filtering state monitoring unit includes a second pressure sensor 411 and a third pressure sensor 412, and the second pressure sensor 411 and the third pressure sensor 412 are arranged in sequence on the circulation pipeline structure 1 at intervals; the filtering pipeline 42 is located between the second pressure sensor 411 and the third pressure sensor 412, and is connected to the circulation pipeline structure 1; and a coarse filter 43 is provided on the filtering pipeline 42; the second pressure sensor 411 and the third pressure sensor 412 are both connected to the control system, and transmit the inlet pressure and the outlet pressure to the control system, and the control system determines the filter element state of the coarse filter 43 by the difference between the inlet pressure and the outlet pressure.

[0100] By setting a coarse filter 43 on the filter pipeline 42, suspended particles and various impurities in the cooling water are effectively removed; the setting of the filter status monitoring unit realizes real-time monitoring of the working status of the coarse filter 43. When the pressure difference between the inlet and the outlet is detected to exceed the preset threshold, the control system will automatically remind the relevant maintenance personnel to clean or replace the filter element of the coarse filter 43 to ensure the continuous and efficient operation of the filtering structure.

[0101] In a specific implementation, the filtering structure is arranged on the main water supply pipeline 131, and the filtering structure and the water quality monitoring system 2 are arranged in sequence along the flow direction of the cooling water, effectively intercepting the suspended particles and various impurities in the cooling water, ensuring the purity of the cooling water entering the water quality monitoring system 2 and the liquid cooling cabinet 6, reducing the adverse effects on the water quality monitoring system 2 and the liquid cooling cabinet 6, and ensuring the efficient and stable operation of the overall system.

[0102] Specifically, the coarse filter 43 is a Y-type filter.

[0103] In one embodiment, at least two filter pipelines 42 are provided, and the at least two filter pipelines 42 are arranged in parallel; a third manual valve 44 and a fourth manual valve 45 are also provided on the filter pipeline 42, and the coarse filter 43 is located between the third manual valve 44 and the fourth manual valve 45.

[0104] The third manual valve 44 and the fourth manual valve 45 cooperate to realize the control of the on-off of the filter pipeline 42. By setting up at least two filter pipelines 42, a dual filter pipeline 42 design of one for use and one for backup is realized. When the secondary side circulation pipeline network maintains continuous operation, the cleaning and replacement of the filter element and the maintenance of the filter pipeline 42 are realized.

[0105] In one embodiment, a needle valve 46 is further disposed on the filter pipeline 42 , and the needle valve 46 is disposed adjacent to the coarse filter 43 .

[0106] By setting a needle valve 46 on the filter pipeline 42, the pressure accumulated in the coarse filter 43 can be safely released to ensure pressure balance during system operation; and the cooling water retained in the coarse filter 43 can be removed to prevent performance degradation and potential corrosion risks caused by cooling water accumulation, thereby maintaining the cleanliness and long-term operating efficiency of the filtration system; and it is ensured that there will be no problems such as pure water outflow during the process of replacing the filter element.

[0107] In one embodiment, the second pressure sensor 411 is connected to the circulation pipeline structure 1 through a second connecting pipe, and a second switch valve is provided on the second connecting pipe.

[0108] Through the arrangement of the second connecting pipe and the second switch valve, when the second pressure sensor 411 malfunctions and needs to be replaced, the second switch valve can be closed to disconnect the second pressure sensor 411 from the circulation pipeline structure 1. During the replacement process of the second pressure sensor 411, external pollutants can be prevented from entering the circulation pipeline structure 1, and liquid leakage in the circulation pipeline structure 1 can be avoided, and the replacement of the second pressure sensor 411 can be achieved without stopping the machine.

[0109] In one embodiment, the third pressure sensor 412 is connected to the circulation pipeline structure 1 through a second connecting pipe, and a third switch valve is provided on the third connecting pipe.

[0110] Through the arrangement of the third connecting pipe and the third switch valve, when the third pressure sensor 412 malfunctions and needs to be replaced, the third switch valve can be closed to disconnect the third pressure sensor 412 from the circulation pipeline structure 1. During the replacement of the third pressure sensor 412, external pollutants can be prevented from entering the circulation pipeline structure 1, and liquid leakage in the circulation pipeline structure 1 can be avoided, and the replacement of the third pressure sensor 412 can be achieved without stopping the machine.

[0111] According to an embodiment of the present invention, on the other hand, a data center liquid cooling system is also provided, including a cooling capacity distribution unit 5, the above-mentioned secondary side circulation pipeline network and the primary side circulation pipeline network; the above-mentioned secondary side circulation pipeline network circulates and connects the cooling capacity distribution unit 5 with the liquid cooling cabinet 6; the primary side circulation pipeline network circulates and connects the cooling capacity distribution unit 5 with the external cooling equipment.

[0112] In a specific implementation, the primary side circulation network includes a water cooling unit 71, two sets of circulation pumps 72, a constant pressure water replenishment system 73, a softening and dosing system 74, a primary side water supply pipeline 75 and a primary side return pipeline 76; the primary side water supply pipeline 75 and the primary side return pipeline 76 circulate and connect the water cooling unit 71 and the cold capacity distribution unit 5, so that the cooling water circulates between the water cooling unit 71 and the cold capacity distribution unit 5, and the low-temperature cooling water is transported to the water inlet of the cold capacity distribution unit 5 through the primary side water supply pipeline 75, and then in the cold capacity distribution unit 5, the low-temperature cooling water on the primary side absorbs the heat of the high-temperature cooling water on the secondary side, thereby reducing the temperature of the cooling water on the secondary side; after completing the heat exchange, the primary side cooling water with increased temperature flows back to the return port of the water cooling unit 71 through the primary side return pipeline 76.

[0113] Specifically, the softening and dosing system 74 is connected to the constant-pressure water replenishment system 73 , and the constant-pressure water replenishment system 73 is arranged on the primary-side return water pipeline 76 .

[0114] Specifically, a circulation pump 72 is arranged on the primary water supply pipeline 75; a first connecting branch is arranged between the primary water supply pipeline 75 and the primary water return pipeline 76, and another circulation pump 72 is arranged on the first connecting branch.

[0115] In a specific implementation, in order to avoid the end effect of the pipeline system, the secondary side return pipe 12 and the secondary side water supply pipe 13 are both set as a ring pipe network to ensure the consistency of pressure and flow in the secondary side return pipe 12 and the secondary side water supply pipe 13, and avoid large differences in the flow and pressure of the liquid-cooled server flowing through the liquid-cooled cabinet 6.

[0116] Specifically, two groups of cold distribution units 5 are provided, realizing a design of one in use and one in reserve. The secondary side return water pipeline 12 is respectively connected to the two groups of cold distribution units 5 through two second connecting branches; the secondary side water supply pipeline 13 is respectively connected to the two groups of cold distribution units 5 through two third connecting branches; the primary side water supply pipeline 75 is respectively connected to the two groups of cold distribution units 5 through two fourth connecting branches; the primary side return water pipeline 76 is respectively connected to the two groups of cold distribution units 5 through two fifth connecting branches.

[0117] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A secondary side circulation pipe network, characterized in that: include: A circulation pipeline structure (1) is suitable for forming a circulation loop between a cooling capacity distribution unit (5) and a liquid cooling cabinet (6); A water quality monitoring system (2) is arranged on the circulation pipeline structure (1); A water purification system (3) is arranged in parallel with the circulation pipeline structure (1) and is used to dilute and purify the water in the circulation pipeline structure (1); A control system is connected to both the water quality monitoring system (2) and the water quality purification system (3), and is used to receive water quality data transmitted by the water quality monitoring system (2), and to control the connection between the water quality purification system (3) and the circulation pipeline structure (1) according to the water quality data.

2. The secondary side circulation pipe network according to claim 1, characterized in that: The circulation pipeline structure (1) comprises a secondary water return pipeline (12), wherein the secondary water return pipeline (12) comprises a main water return pipeline (121) and a plurality of water return branches (122); the main water return pipeline (121) is suitable for being connected to a cooling capacity distribution unit (5); one end of the water return branch (122) is connected to the main water return pipeline (121), and the other end is suitable for being connected to a liquid cooling cabinet (6); the water purification system (3) is connected to the main water return pipeline (121).

3. The secondary side circulation pipe network according to claim 2, characterized in that: The circulation pipeline structure (1) comprises a first pipeline structure, the first pipeline structure comprises a first branch (111) and a first on-off valve (112), the first branch (111) is arranged on the main return water pipeline (121), and the first on-off valve (112) is arranged on the first branch (111); The water purification system (3) comprises a second pipeline structure, a water storage tank (32) and a pure water treatment system (33); the second pipeline structure comprises a second branch (311), a second on-off valve (312) and a third on-off valve (313); the second branch (311) is connected to the main return water pipeline (121) and is arranged in parallel with the first branch (111); The second on-off valve (312), the water storage tank (32) and the third on-off valve (313) are sequentially arranged on the first branch (111); pure water is stored in the water storage tank (32), and the pure water treatment system (33) is connected to the water storage tank (32); The control system is connected to the first on-off valve (112), the second on-off valve (312), the third on-off valve (313) and the pure water treatment system (33); The control system controls the on-off connection between the pure water treatment system (33) and the water storage tank (32); controls the on-off connection of the first branch (111) by controlling the first on-off valve (112); and controls the on-off connection of the second branch (311) by controlling the second on-off valve (312) and the third on-off valve (313).

4. The secondary side circulation pipe network according to claim 3, characterized in that: The pure water treatment system (33) comprises: A secondary side raw water pipeline (331), one end of which is connected to the water storage tank (32); A water purification device, the inlet of which is connected to the other end of the secondary side raw water pipeline (331); A water outlet pipeline (333), one end of which is connected to the outlet of the water purification device, and the other end of which is connected to the water storage tank (32); a first power pump (334) is provided on the water outlet pipeline (333); The water storage tank (32) is provided with a first pressure sensor (321), and the first pressure sensor (321) and the first power pump (334) are both connected to the control system, and the control system is used to receive pressure data transmitted by the first pressure sensor (321) and control the start and stop of the first power pump (334) according to the pressure data.

5. The secondary side circulation pipe network according to claim 4, characterized in that: The pure water treatment system (33) further comprises an external water source pipeline (335), one end of which is connected to the inlet of the water purification device, and the other end of which is suitable for connecting to an external water source; a fourth on-off valve (336) is provided on the external water source pipeline (335); A raw water tank (33201) is provided at the inlet of the water purification device, and a first liquid level sensor (33202) is provided on the raw water tank (33201); the first liquid level sensor (33202) and the fourth on-off valve (336) are both connected to the control system, and the control system is used to receive liquid level data transmitted by the first liquid level sensor (33202), and control the on-off of the external water source pipeline (335) by controlling the fourth on-off valve (336) according to the liquid level data; And / or, the water storage tank (32) is provided with a second liquid level sensor (322), and the secondary side raw water pipeline (331) is provided with a second power pump (337); the second liquid level sensor (322) and the second power pump (337) are both connected to the control system, and the control system is used to receive liquid level data transmitted by the second liquid level sensor (322), and control the start and stop of the second power pump (337) according to the liquid level data; And / or, the water storage tank (32) is further provided with a breathing valve (323), and the breathing valve (323) is arranged above the water storage tank (32); And / or, the first pressure sensor (321) is connected to the water storage tank (32) via a first connecting pipe, and the first connecting pipe is provided with a first switch valve (4111); And / or, a one-way valve (338) is provided on the water outlet pipeline (333).

6. The secondary side circulation pipe network according to any one of claims 1 to 5, characterized in that: The circulation pipeline structure (1) comprises a secondary water supply pipeline (13), wherein the secondary water supply pipeline (13) comprises a main water supply pipeline (131) and a plurality of water supply branches (132); the main water supply pipeline (131) is suitable for being connected to a cooling capacity distribution unit (5); one end of the water supply branch (132) is connected to the main water supply pipeline (131), and the other end is suitable for being connected to a liquid cooling cabinet (6); and the water quality monitoring system (2) is connected to the main water supply pipeline (131).

7. The secondary side circulation pipe network according to claim 6, characterized in that: The water quality monitoring system (2) comprises: A monitoring liquid storage tank (21) connected to the circulation pipeline structure (1); A monitoring component is fixed on the monitoring liquid storage tank (21), and a monitoring probe of the monitoring component is extended into the monitoring liquid storage tank (21) and contacts the coolant in the monitoring liquid storage tank (21).

8. The secondary side circulation pipe network according to claim 7, characterized in that: The water quality monitoring system (2) further comprises a third pipeline structure, the third pipeline structure comprising a third branch (231), a first manual valve (232) and a second manual valve (233); the third branch (231) is arranged in parallel with the main water supply pipeline (131); the first manual valve (232), the monitoring liquid storage tank (21) and the second manual valve (233) are arranged in sequence on the third branch (231); And / or, the monitoring liquid storage tank (21) comprises a baffle (211), the baffle (211) is located between the water inlet and the water outlet of the monitoring liquid storage tank (21), and is spaced apart from the top of the monitoring liquid storage tank (21); the monitoring component is located on a side of the baffle (211) close to the water inlet of the monitoring liquid storage tank (21), and the distance between the monitoring probe of the monitoring component and the bottom of the monitoring liquid storage tank (21) is less than the height of the baffle (211); And / or, the monitoring liquid storage tank (21) comprises an exhaust valve (212), and the exhaust valve (212) is arranged on the top of the monitoring liquid storage tank (21); And / or, the monitoring liquid storage tank (21) comprises a sampling valve (213), and the sampling valve (213) is arranged below the monitoring liquid storage tank (21).

9. The secondary side circulation pipe network according to any one of claims 1 to 5 or 7 or 8, characterized in that: Also included is a filtering structure, the filtering structure comprising: A filtering state monitoring unit, comprising a second pressure sensor (411) and a third pressure sensor (412), wherein the second pressure sensor (411) and the third pressure sensor (412) are sequentially arranged at intervals on the circulation pipeline structure (1); a filter pipeline (42), located between the second pressure sensor (411) and the third pressure sensor (412), and connected to the circulation pipeline structure (1); and a coarse filter (43) is provided on the filter pipeline (42); The second pressure sensor (411) and the third pressure sensor (412) are both connected to the control system and transmit inlet pressure and outlet pressure to the control system. The control system determines the filter element state of the coarse filter (43) by the difference between the inlet pressure and the outlet pressure.

10. The secondary side circulation pipe network according to claim 9, characterized in that: At least two filter pipelines (42) are provided, and the at least two filter pipelines (42) are arranged in parallel; a third manual valve (44) and a fourth manual valve (45) are also provided on the filter pipeline (42), and the coarse filter (43) is located between the third manual valve (44) and the fourth manual valve (45); And / or, the filtering pipeline (42) is further provided with a needle valve (46), and the needle valve (46) is arranged adjacent to the coarse filter (43); And / or, the second pressure sensor (411) is connected to the circulation pipeline structure (1) via a second connecting pipe, and a second switch valve is provided on the second connecting pipe; And / or, the third pressure sensor (412) is connected to the circulation pipeline structure (1) via a second connecting pipe, and a third switch valve is provided on the third connecting pipe.

11. A data center liquid cooling system, characterized in that: include: A cooling capacity distribution unit (5); The secondary side circulation pipe network according to any one of claims 1 to 10, circulatory connection between the cooling capacity distribution unit (5) and the liquid cooling cabinet (6); The primary side circulation pipe network circulates and connects the cooling capacity distribution unit (5) with external cooling equipment.

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