Cooling system

Abstract

The utility model provides a cooling system which comprises a first cooling device and a heat exchange device, the first cooling device comprises a first circulation pipeline and a power assembly, and the power assembly comprises at least two pump body passages connected in parallel. A pump body input control valve, a circulating pump, a first pressure sensor, a first one-way valve and a pump body output control valve are arranged on each pump body passage; the first pressure sensor is used for acquiring a pump opening pressure value of the circulating pump, a second pressure sensor is arranged on the upstream of the power assembly, and a third pressure sensor is arranged on the downstream of the power assembly and used for acquiring a total input pressure value and a total output pressure value of the power assembly. Compared with the prior art, on-line overhaul and maintenance work can be conducted on all parts under the non-stop condition, the operation state of all the circulating pumps can be accurately judged by comparing the pump opening pressure value, the total input pressure value and the total output pressure value, the operation power of the circulating pumps is adjusted, and the unbalance loading problem is avoided.

Description

Technical Field

[0001] This application pertains to server cooling technology, and more specifically, to a cooling system. Background Technology

[0002] Servers and other equipment generate a lot of heat during operation. Cooling systems such as CDUs (coolant distribution units) are often used to dissipate heat and cool down the servers, maintaining their stable operation.

[0003] The CDU cooling system's power components include two sets of parallel circulating pumps, which serve as redundant backups for each other. This allows the other pump to be started to maintain the cooling system's operation if one fails, enabling online maintenance of the faulty pump without shutting down the cooling system. This avoids downtime for servers and other equipment, reducing maintenance costs. Furthermore, the two sets of circulating pumps can operate alternately or in coordination to extend their lifespan.

[0004] However, when two sets of circulating pumps work together, an uneven load problem can easily occur, where the output pressures of the two sets of circulating pumps are not equal. The two sets of circulating pumps affect each other, which not only causes turbulence in the flow of the heat exchange medium, but also makes it difficult to accurately judge the operating status of each circulating pump. Utility Model Content

[0005] The purpose of this application is to provide a cooling system that solves the defects in the prior art where two sets of circulating pumps are prone to uneven load, resulting in turbulent flow in the heat exchange mechanism and difficulty in judging the operating status of each circulating pump.

[0006] To achieve the above objectives, the cooling system provided in this application includes a first cooling device and a heat exchange device. The first cooling device includes a first circulation pipeline and a power component. The first circulation pipeline is disposed between the heat exchange device and the heat dissipation object. The power component is connected to the first circulation pipeline and is used to drive the first heat exchange medium to circulate in the first circulation pipeline.

[0007] The power assembly includes at least two parallel pump body passages. Each pump body passage is provided with a pump body input control valve, a circulating pump, a first check valve, and a pump body output control valve connected in series along the flow direction of the first heat exchange medium. Each pump body passage is provided with a first pressure sensor on the output end side of the circulating pump to obtain the pump inlet pressure value of the circulating pump.

[0008] At least one second pressure sensor is provided upstream of the power component, and at least one third pressure sensor is provided downstream. The second pressure sensor is used to obtain the total input pressure value of the power component, and the third pressure sensor is used to obtain the total output pressure value of the power component.

[0009] In some embodiments, the first cooling device further includes a filter assembly disposed in the first circulation pipeline, and the second pressure sensor is located between the filter assembly and the power assembly;

[0010] The filtration assembly includes a filtration pipeline and a bypass pipeline connected in parallel. The filtration pipeline is equipped with a filtration input control valve, a filter, and a filtration output control valve connected in series along the flow direction of the first heat exchange medium. The bypass pipeline is equipped with a bypass control valve. A fourth pressure sensor is located upstream of the filter.

[0011] In some embodiments, the first cooling device further includes a pressure regulating component, which includes an expansion tank and a pressure regulating pipeline. One end of the pressure regulating pipeline is connected to the expansion tank and the other end is connected to the first circulation pipeline. A first pressure regulating control valve is provided on the pressure regulating pipeline. A pressure regulating branch is also connected between the first pressure regulating control valve and the expansion tank, and a second pressure regulating control valve is connected to the pressure regulating branch.

[0012] In some embodiments, the first cooling device further includes a liquid replenishment assembly located upstream of the filtration assembly;

[0013] The fluid replenishment assembly includes a fluid replenishment tank and a fluid replenishment pipeline. The input end of the fluid replenishment pipeline is connected to the output end of the fluid replenishment tank, and the output end of the fluid replenishment pipeline is connected to the first circulation pipeline. The fluid replenishment pipeline is provided with a fluid replenishment pump, a second one-way valve, and a fluid replenishment control valve connected in series from the fluid replenishment tank toward the first circulation pipeline.

[0014] In some embodiments, the first circulation pipeline is provided with a pressure relief valve downstream of the power component, the pressure relief valve is connected to a pressure relief pipeline, and the other end of the pressure relief pipeline is connected to the input end of the replenishment tank.

[0015] In some embodiments, the first circulation pipeline includes a first output pipeline, a first input pipeline, and a branch pipeline. The two ends of the first output pipeline are respectively connected to the output end of the heat dissipation object and the first input end of the heat exchange device. The two ends of the first input pipeline are respectively connected to the first output end of the heat exchange device and the input end of the heat dissipation object. The input end of the branch pipeline is connected to the first output pipeline, and the output end of the branch pipeline is connected to the first input pipeline. A branch control valve is provided on the branch pipeline.

[0016] In some embodiments, a drainage branch is connected to the first output pipe, and a drainage valve is provided on the drainage branch.

[0017] In some embodiments, an exhaust assembly is provided on the first input pipeline. The exhaust assembly includes an exhaust control valve and an exhaust valve. One end of the exhaust control valve is connected to the first input pipeline, and the exhaust valve is connected to the other end of the exhaust control valve.

[0018] In some embodiments, at least one fifth pressure sensor and at least one first temperature sensor are provided on the side of the first output pipe near the heat dissipation object; at least one sixth pressure sensor and at least one second temperature sensor are provided on the side of the first input pipe near the heat dissipation object.

[0019] In some embodiments, the cooling system further includes a second cooling device and a heat dissipation device, wherein the second cooling device includes a second circulation pipeline connected between the heat exchange device and the heat dissipation device for circulating a second heat exchange medium between the heat exchange device and the heat dissipation device;

[0020] The second circulation pipeline includes a second output pipeline and a second input pipeline; the two ends of the second output pipeline are respectively connected to the second output end of the heat exchange device and the input end of the heat dissipation device, and the second input pipeline is provided with a flow regulating valve 313, at least one seventh pressure sensor and at least one third temperature sensor; the two ends of the second input pipeline are respectively connected to the second input end of the heat exchange device and the output end of the heat dissipation device, and the second input pipeline is provided with at least one eighth pressure sensor and at least one fourth temperature sensor.

[0021] The beneficial effects of the cooling system provided in this application are as follows: the first heat exchange medium circulates in the first input pipe, the heat dissipation object, the first output pipe, and the heat exchange device under the drive of the power component, so as to continuously absorb heat and cool the heat dissipation object. When one of the circulation pumps of the power component fails, the other circulation pump automatically starts to maintain the normal operation of the cooling system. Furthermore, the pump body input control valve and pump body output control valve located on both sides of the failed circulation pump can be closed to disconnect the failed circulation pump from the first output pipe, thereby realizing online maintenance, repair, and replacement of the failed circulation pump during normal operation of the cooling system.

[0022] When the two sets of circulating pumps work together, the first pressure sensor obtains the pump inlet pressure value of the corresponding circulating pump, the second pressure sensor obtains the total input pressure value on the input side of the power component, and the third pressure sensor obtains the total output pressure value on the output side of the power component. By comparing the pump inlet pressure value, the total input pressure value, and the total output pressure value, the operating status of each circulating pump can be accurately determined. The operating frequency of the circulating pump can be adjusted according to the pump inlet pressure value, the total input pressure value, and the total output pressure value, so that the difference between the output pressure of each circulating pump and the total output pressure is equal. This makes the output pressure of the two sets of circulating pumps equal, reduces the risk of uneven load, and ensures the stable flow of the heat exchange medium.

[0023] In addition, the first pressure sensor, the second pressure sensor, and the third pressure sensor can be pressure sensors with connecting valves. In this way, by closing the corresponding connecting valves, the connection between the first pressure sensor, the second pressure sensor, and the third pressure sensor and the first output pipeline can be disconnected. This allows the first pressure sensor, the second pressure sensor, or the third pressure sensor to be maintained, repaired, or replaced without shutting down the cooling system, thereby reducing the maintenance cost of the cooling system. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the cooling system in an exemplary embodiment of this application.

[0026] The following are the labeling elements in the figure:

[0027] 100 - First cooling device;

[0028] 110 - First output pipeline; 111 - First pressure sensor; 112 - Second pressure sensor; 113 - Third pressure sensor; 114 - Fourth pressure sensor; 115 - Pressure relief valve; 1151 - Pressure relief pipeline; 116 - Drainage branch; 1161 - Drain valve; 117 - First temperature sensor; 118 - Fifth pressure sensor;

[0029] 120 - First input line; 121 - Sixth pressure sensor; 122 - Second temperature sensor;

[0030] 130 - Power assembly; 131 - Pump body input control valve; 132 - Circulation pump; 133 - First check valve; 134 - Pump body output control valve;

[0031] 140 - Filter assembly; 141 - Filter input control valve; 142 - Filter; 1421 - Drain control valve; 143 - Filter output control valve; 144 - Bypass control valve;

[0032] 150 - Pressure regulating assembly; 151 - Expansion tank; 152 - Pressure regulating pipeline; 1521 - First pressure regulating control valve; 1522 - Pressure regulating branch; 1523 - Second pressure regulating control valve;

[0033] 160 - Liquid replenishment assembly; 161 - Liquid replenishment tank; 1611 - Liquid level sensor; 162 - Liquid replenishment pipeline; 1621 - Liquid replenishment pump; 1622 - Second check valve; 1623 - Liquid replenishment control valve;

[0034] 170 - Exhaust assembly; 171 - Exhaust valve; 172 - Exhaust control valve;

[0035] 180 - Diversion line; 181 - Diversion control valve; 182 - Diversion regulating valve;

[0036] 200 - Heat exchanger;

[0037] 300 - Second cooling device;

[0038] 310 - Second output line; 311 - Seventh pressure sensor; 312 - Third temperature sensor; 313 - Flow regulating valve;

[0039] 320 - Second input line; 321 - Eighth pressure sensor; 322 - Fourth temperature sensor;

[0040] 400 - Heat dissipation device;

[0041] 500 - Heat dissipation object. Detailed Implementation

[0042] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0043] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0044] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0046] This application provides a cooling system, such as Figure 1 As shown, the cooling system includes a first cooling device 100, a heat exchange device 200, a second cooling device 300, and a heat dissipation device 400. The first cooling device 100 is connected between the heat exchange device 200 and the heat dissipation object 500, and is used to circulate the first heat exchange medium between the heat exchange device 200 and the heat dissipation object 500. The second cooling device 300 is connected between the heat exchange device 200 and the heat dissipation device 400, and is used to circulate the second heat exchange medium between the heat exchange device 200 and the heat dissipation object 500. The first and second heat exchange media can be cooling liquids such as water, deionized water, ethylene glycol, propylene glycol, or mineral oil. The first and second heat exchange media can be the same or different. When the cooling system is applied to a specific application, gases such as air or nitrogen can also be used as the first and second heat exchange media.

[0047] During operation, the first cooling device 100 drives the first heat exchange medium to circulate between the heat exchange device 200 and the heat dissipation object 500. The lower-temperature first heat exchange medium absorbs the heat generated by the heat dissipation object 500 as it passes through it. After absorbing heat and becoming hotter, the first heat exchange medium then exchanges heat with a lower-temperature second heat exchange medium flowing in the heat exchange device 200, thus cooling the heated first heat exchange medium. The cooled first heat exchange medium then flows back to the heat dissipation object 500, thereby using the circulating first heat exchange medium to cool the heat dissipation object 500. The second cooling device 300 drives the second heat exchange medium to circulate between the heat exchange device 200 and the heat dissipation device 400. The lower-temperature second heat exchange medium absorbs the temperature of the heated first heat exchange medium as it passes through the heat exchange device 200, thus cooling the first heat exchange medium. After absorbing heat and heating up, the second heat exchange medium flows into the heat dissipation device 400, where it is cooled down. After being cooled down by the heat dissipation device 400, the second heat exchange medium flows back into the heat exchange device 200 to exchange heat with the first heat exchange medium. Thus, the circulating second heat exchange medium cools down the first heat exchange medium passing through the heat exchange device 200, ensuring the heat dissipation effect of the first heat exchange medium on the heat dissipation object 500.

[0048] The first cooling device 100 includes a first circulation pipeline and a power component 130. The first circulation pipeline is disposed between the heat exchange device 200 and the heat dissipation object 500. The power component 130 is connected to the first circulation pipeline and is used to drive the first heat exchange medium to circulate in the first circulation pipeline.

[0049] Specifically, the first circulation pipeline is a fluid transport component composed of multiple connected transport pipes. The first circulation pipeline can be continuous or segmented. In some embodiments, the first circulation pipeline may include a first output pipeline 110, a first input pipeline 120, and a power assembly 130. The two ends of the first input pipeline 120 are respectively connected to the first output end of the heat exchange device 200 and the input end of the heat dissipation object 500, and the two ends of the first output pipeline 110 are respectively connected to the first input end of the heat exchange device 200 and the output end of the heat dissipation object 500. The power assembly 130 can be connected to the first output pipeline 110 to drive the first coolant to circulate among the first output pipeline 110, the heat exchange device 200, the first input pipeline 120, and the heat dissipation object 500.

[0050] The heat dissipation object 500 can be a terminal cold plate of a server, which can absorb the heat generated during server operation. The heat dissipation object 500 can be provided with a pipe for the flow of the first heat exchange medium. The two ends of the pipe are the input end and the output end of the heat dissipation object 500, respectively, so that the first heat exchange medium can be sent into the pipe of the heat dissipation object 500 through the first input pipe 120 for heat exchange, and after heat exchange, it is output from the output end of the pipe to the first output pipe 110.

[0051] The heat exchange device 200 can be a plate heat exchanger or a shell-and-tube radiator. The heat exchange device 200 has a first heat exchange pipeline for the flow of a first heat exchange medium. The two ends of the first heat exchange pipeline are the first input end and the first output end of the heat exchange device 200, respectively. After absorbing heat and heating up after passing through the heat dissipation object 500, the first heat exchange medium enters the first heat exchange pipeline through the first output pipeline 110. During its flow within the first heat exchange pipeline, the first heat exchange medium exchanges heat with a second heat exchange medium. The cooled first heat exchange medium flows from the first output end into the first input pipeline 120, and is then transported back to the heat dissipation object 500 through the first input pipeline 120.

[0052] In some embodiments, the power assembly 130 includes at least two parallel pump passages, each of which is provided with a pump input control valve 131, a circulation pump 132, a first check valve 133, and a pump output control valve 134 connected in series along the flow direction of the first heat exchange medium.

[0053] Specifically, the pump body passage is a fluid transport component consisting of multiple transport pipes. These multiple transport pipes connect the pump body input control valve 131, the circulating pump 132, the first check valve 133, and the pump body output control valve 134 in series. When two pump body passages are provided, the same side of the two pump body passages can be connected to a T-joint, and then connected to the corresponding transport pipe in the first output pipe 110 through the T-joint, so that the two pump body passages are connected in parallel to the first output pipe 110. The first heat exchange medium can flow from the first output pipe 110 into either pump body passage.

[0054] The circulating pump 132 can be a centrifugal pump, an axial flow pump, or a mixed flow pump. The inlet of the circulating pump 132 faces the heat dissipation object 500, and the outlet faces the heat exchange device 200. During operation, the circulating pump 132 draws in the first heat exchange medium from the inlet and outputs it at a certain pressure from the outlet, allowing the first heat exchange medium to overcome system resistance and flow smoothly within the first outlet pipe 110, the heat exchange device 200, the first inlet pipe 120, and the heat dissipation object 500. Furthermore, the circulating pump 132 can also employ frequency conversion regulation, allowing the pump's operating frequency to be adjusted based on system pressure difference, temperature difference, flow rate, and other parameters to meet various control requirements of the cooling system under varying load conditions.

[0055] The pump body input control valve 131 is located on the input side of the circulating pump 132 and is used to open or close the connection between the input end of the circulating pump 132 and the first output pipeline 110. The pump body output control valve 134 is located on the output side of the circulating pump 132 and is used to open or close the connection between the output end of the circulating pump 132 and the first output pipeline 110. The first check valve 133 ensures that the first heat exchange medium can only flow from the output end of the circulating pump 132 toward the heat exchange device 200, preventing the first heat exchange medium from flowing back into the circulating pump 132. The pump body input control valve 131 and the pump body output control valve 134 can be butterfly valves or ball valves.

[0056] When the power assembly 130 is operating, the pump input control valve 131 and pump output control valve 134 on each pump passage are open. The circulating pumps 132 on both pump passages can operate independently or alternately at set intervals to extend the service life of each circulating pump 132. Furthermore, if one of the circulating pumps 132 fails, the pump input control valve 131 and pump output control valve 134 located on the same pump passage as the failed pump can be closed, disconnecting the failed pump 132 from the first output pipeline 110 for maintenance. Simultaneously, the other circulating pump 132 continues to operate, ensuring the cooling system remains running and maintaining heat dissipation for the server. In addition, the circulating pumps 132 on the two pump passages can work collaboratively to improve the delivery efficiency of the first heat exchange medium.

[0057] Furthermore, each pump body passage is equipped with a first pressure sensor 111 on the output side of the circulating pump 132 to obtain the pump inlet pressure value of the circulating pump 132.

[0058] Specifically, the first pressure sensor 111 can be connected between the circulating pump 132 and the first check valve 133. A three-way connector can be provided in the pump body passage between the circulating pump 132 and the first check valve 133, and the first pressure sensor 111 is connected in parallel to the pump body passage through the three-way connector. Furthermore, a first connecting valve can be connected between the first pressure sensor 111 and the pump body passage. The first connecting valve is used to control the opening and closing of the first pressure sensor 111 and the pump body passage. When the first cooling system is working normally, the first connecting valve is in the open state, and the first pressure sensor 111 can contact the first heat exchange medium output by the circulating pump 132 to monitor the pump port pressure value at the output end of the circulating pump 132. Additionally, after closing the first connecting valve, the connection between the first pressure sensor 111 and the first output pipeline 110 can be disconnected, thereby enabling maintenance, repair, or replacement of the first pressure sensor 111 without shutting down the system. The first connecting valve can be a ball valve.

[0059] Furthermore, at least one second pressure sensor 112 is provided upstream of the power assembly 130 and at least one third pressure sensor 113 is provided downstream. The second pressure sensor 112 is used to obtain the total input pressure value of the power assembly 130, and the third pressure sensor 113 is used to obtain the total output pressure value of the power assembly 130.

[0060] Specifically, the second pressure sensor 112 and the third pressure sensor 113 can also be connected in parallel to the first output pipe 110 using a tee connector. A second connecting valve can be provided between the second pressure sensor 112 and the first output pipe 110, and a third connecting valve can be provided between the third pressure sensor 113 and the first output pipe 110. When the first cooling device 100 is operating normally, both the second and third connecting valves are in the open state. The second pressure sensor 112 can contact the first heat exchange medium before entering the power assembly 130 to monitor the total input pressure value of the first heat exchange medium before entering the power assembly 130 in real time. The third pressure sensor 113 can contact the first heat exchange medium output from the power assembly 130 to monitor the total output pressure value of the first heat exchange medium output from the power assembly 130 in real time. After closing the second or third connecting valve, maintenance and repair work can be performed on the second pressure sensor 112 or the third pressure sensor 113 without shutting down the first cooling device 100. The second and third connecting valves can be ball valves.

[0061] During the operation of the power assembly 130, the operating status of each circulating pump 132 can be accurately determined by comparing the pump inlet pressure value, total input pressure value, and total output pressure value at the output end of each circulating pump 132. The operation of each circulating pump 132 can also be controlled based on the comparison results. For example, when the circulating pumps 132 operate independently or alternately, the difference between the total input pressure value and the pump inlet pressure value can be obtained. When the difference between the total input pressure value and the pump inlet pressure value is too large and exceeds the safety threshold, it can be determined that the circulating pump 132 is operating abnormally. When the circulating pumps 132 on two pump body passages operate collaboratively, the difference between the pump inlet pressure value and the total output pressure value of each circulating pump 132 can be obtained. The operating frequency of each circulating pump 132 can be adjusted according to the different differences, so that the difference between the pump inlet pressure value and the total output pressure value of each circulating pump 132 is equal or similar, reducing the likelihood of uneven load problems and improving the flow stability of the first heat exchange medium output from the power assembly 130.

[0062] Furthermore, the number of the first pressure sensor 111, the second pressure sensor 112, and the third pressure sensor 113 mentioned above can be arbitrary. For example, two second pressure sensors 112 are provided on the first output pipeline 110, and the two second pressure sensors 112 are respectively connected to the first output pipeline 110 through two second connecting valves. When one of the second pressure sensors 112 is under maintenance, the other second pressure sensor 112 can still participate in the logic control of the circulating pump 132.

[0063] In some embodiments, the first cooling device 100 further includes a filter assembly 140 disposed in the first circulation pipeline, and a second pressure sensor 112 is located between the filter assembly 140 and the power assembly 130. The filter assembly 140 includes a filter pipeline and a bypass pipeline disposed in parallel. The filter pipeline is provided with a filter input control valve 141, a filter 142, and a filter output control valve 143 connected in series along the flow direction of the first heat exchange medium. The bypass pipeline is provided with a bypass control valve 144. A fourth pressure sensor 114 is disposed upstream of the filter 142.

[0064] Specifically, the filter assembly 140 can be installed on either the input or output side of the heat dissipation object 500. For example, the filter assembly 140 can be installed on the first output pipe 110 and located upstream of the power assembly 130. The filter pipe and bypass pipe are also fluid transport components composed of multiple transport pipes. The filter input control valve 141, filter 142, and filter output control valve 143 can be connected in series via the transport pipes in the filter pipe. The same side of the filter pipe and bypass pipe can be connected to a tee joint and can be connected to the corresponding transport pipe of the first output pipe 110 via the tee joint, so that the filter pipe and bypass pipe are connected in parallel to the first output pipe 110.

[0065] The filter 142 can be a Y-type filter 142 or a basket filter 142, etc. The filter 142 has a removable filter element or filter screen. The input end of the filter 142 faces the heat dissipation object 500, and the output end faces the power assembly 130. During normal operation of the first cooling device 100, both the filter input control valve 141 and the filter output control valve 143 are open, and the bypass control valve 144 is closed, connecting the filter pipeline to the first output pipeline 110 and disconnecting the bypass pipeline from the first output pipeline 110. After the first heat exchange medium enters the filter pipeline through the first output pipeline 110, it flows through the filter 142. The filter element or filter screen in the filter 142 can block impurities in the first heat exchange medium, thus achieving filtration. The first heat exchange medium is filtered before entering the power assembly 130, preventing impurities from entering the circulation pump 132 of the power assembly 130 and ensuring the stability and safety of the circulation pump 132 during operation.

[0066] When excessive impurities clog the filter element or screen in filter 142, it will affect the flow rate of the first heat exchange mechanism, requiring cleaning or replacement of the filter element or screen. First, open the bypass control valve 144 to connect the bypass pipeline to the first output pipeline 110. Then, close the filter input control valve 141 and the filter output control valve 143 to disconnect the filter 142 from the first output pipeline 110, allowing the first heat exchange medium to flow directly into the power unit 130 via the bypass pipeline. This allows for maintenance of filter 142 without shutting down the system. Furthermore, filter 142 also has a drain port connected to a drain control valve 1421. The drain port can be connected to the system's water receiving pan or waste liquid collection tank via a branch line. Opening the drain control valve 1421 allows for partial liquid discharge without disassembling the filter element or screen.

[0067] A fourth pressure sensor 114 can be installed between the filter input control valve 141 and the filter 142, and a fourth connecting valve can be connected between the fourth pressure sensor 114 and the filter pipeline. During normal operation, the fourth connecting valve is open, allowing the fourth pressure sensor 114 to monitor the filter input pressure value of the first heat exchange medium before it enters the filter 142. Simultaneously, the total input pressure value of the power assembly 130 obtained by the second pressure sensor 112 is also the pressure value of the first heat exchange medium when it exits the filter assembly 140. The filter 142 can be judged for clogging by comparing the filter input pressure value and the total input pressure value. For example, if the difference between the filter input pressure value and the total input pressure value exceeds a set value, it indicates that the filter 142 is clogged. In this case, the drain control valve 1421 can be manually opened for manual draining. If the filter is still clogged after manual draining, the bypass control valve 144 can be opened, and the filter input control valve 141 and the filter output control valve 143 can be closed before performing online maintenance on the filter 142.

[0068] Additionally, the drain control valve 1421 can be a solenoid valve. The cooling system also includes a controller. All pressure sensors and the drain control valve 1421 are connected to the controller. The controller controls the opening or closing of the drain control valve 1421 based on the difference between the filter input pressure and the total input pressure, thereby achieving automatic draining of the filter 142's drain port. For example, the control method for automatic draining of the filter 142 may include:

[0069] Determine if filter 142 is clogged: If the difference between the filter input pressure value and the total input pressure value is greater than the clog determination value for a second preset time after the circulation pump 132 has been turned on for a first preset time, then filter 142 is clogged.

[0070] When filter 142 becomes clogged, the controller issues the first warning message to notify maintenance personnel to manually drain or clean filter 142 in a timely manner.

[0071] After issuing the first warning message, if the difference between the filter input pressure value and the total input pressure value recovers to less than the blockage judgment value for a third consecutive preset time, the first warning message is cancelled; if the difference between the filter input pressure value and the total input pressure value is still greater than the blockage judgment value after a fourth preset time, the controller can control the drain control valve 1421 to automatically open for draining, and close the drain control valve 1421 after it remains open for a fifth preset time.

[0072] After closing the drain control valve 1421, if the difference between the filter input pressure value and the total input pressure value is still greater than the clogging judgment value, the controller can control the drain control valve 1421 to open again, and maintain the opening for a fifth preset time before closing the drain control valve 1421; if the difference between the filter input pressure value and the total input pressure value is still greater than the clogging judgment value, the controller can issue a second warning message, and use the second warning message to continuously notify maintenance personnel that the filter 142 needs to be inspected.

[0073] The controller can be a host computer, and the dirt blockage judgment value, the first preset time, the second preset time, the third preset time, the fourth preset time, and the fifth preset time can all be set in the controller.

[0074] In some embodiments, the first cooling device 100 further includes a pressure regulating component 150, which includes an expansion tank 151 and a pressure regulating pipeline 152. One end of the pressure regulating pipeline 152 is connected to the expansion tank 151 and the other end is connected to the first output pipeline 110. A first pressure regulating control valve 1521 is provided on the pressure regulating pipeline 152. A pressure regulating branch 1522 is also connected between the first pressure regulating control valve 1521 and the expansion tank 151. A second pressure regulating control valve 1523 is connected to the pressure regulating branch 1522.

[0075] Specifically, the expansion tank 151 consists of a tank body and an air bladder located inside the tank body. The tank body stores gas at a certain pressure, which is the same as the rated pressure in the first cooling system. The air bladder stores the first heat exchange medium, and one end of the constant pressure pipeline 152 is connected to the air bladder. One end of the constant pressure pipeline 152 is connected to the air bladder inside the expansion tank 151, and the other end can be connected to the first output pipeline 110 via a tee connector. During normal operation of the first cooling system, the constant pressure connection valve is open, connecting the constant pressure pipeline 152 to the first output pipeline 110. When the pressure inside the first heat exchange medium in the first output pipeline 110 or the first input pipeline 120 decreases due to loss or other reasons, the pressure inside the expansion tank 151 will be greater than the pressure inside the first output pipeline 110. At this time, the gas inside the expansion tank 151 will squeeze out the first heat exchange medium stored in the gas bladder and replenish it to the second output pipeline 310 through the constant pressure pipeline 152 until the pressure inside the first cooling device 100 is balanced, providing a more stable pressure for the flow of the first heat exchange medium. Furthermore, after closing the first constant pressure control valve 1521, the connection between the expansion tank 151 and the first output pipeline 110 can be disconnected, facilitating maintenance and repair of the expansion tank 151 without shutting down the system.

[0076] One end of the constant pressure branch 1522 can be connected to the constant pressure pipeline 152 via a tee connector. After closing the first constant pressure control valve 1521, the second constant pressure control valve 1523 is opened, allowing the first heat exchange medium stored in the air bladder of the expansion tank 151 to be discharged through the constant pressure branch 1522. When the pressure inside the expansion tank 151 is low, an air pump or air compressor can be used to replenish the pressure inside the expansion tank 151. The other end of the constant pressure branch 1522 can be connected to a heat exchange medium delivery source to replenish the first heat exchange medium into the air bladder.

[0077] The constant pressure component 150 can be located upstream of the filter component 140. On the one hand, it can ensure that the first heat exchange medium output from the constant pressure component 150 is filtered by the filter component 140 before entering the power component 130, thus protecting the circulating pump 132. On the other hand, it can prevent the circulating pump 132 from cavitation problems caused by excessively low pressure in front of the power component 130.

[0078] In some embodiments, the first cooling device 100 further includes a replenishment assembly 160, which is located upstream of the filter assembly 140. The replenishment assembly 160 includes a replenishment tank 161 and a replenishment pipeline 162. The input end of the replenishment pipeline 162 is connected to the output end of the replenishment tank 161, and the output end of the replenishment pipeline 162 is connected to the first circulation pipeline. The replenishment pipeline 162 is provided with a replenishment pump 1621, a second check valve 1622, and a replenishment control valve 1623 that are connected in series from the replenishment tank 161 toward the first circulation pipeline.

[0079] Specifically, the replenishment component 160 can be installed on the first output pipeline 110 and located between the pressure regulating component 150 and the filter component 140. The input end of the replenishment pipeline 162 can be connected to the first output pipeline 110 via a tee connector. The replenishment tank 161, the replenishment pump 1621, the second one-way valve 1622, and the replenishment connection valve can be connected in series via multiple delivery pipes of the replenishment pipeline 162. The replenishment tank 161 stores the first heat exchange medium. When too much of the first heat exchange medium in the first cooling device 100 is lost, resulting in low pressure and the pressure regulating component 150 is unable to balance the pressure, the replenishment pump 1621 can be activated to extract the first heat exchange medium from the replenishment tank 161 and send it into the first output pipeline 110 to replenish the first heat exchange medium and pressure in the first output pipeline 110. The second one-way valve 1622 only allows the first heat exchange medium to flow from the replenishment tank 161 towards the first output pipeline 110; the first heat exchange medium in the first output pipeline 110 will not flow back into the replenishment tank 161. Even after closing the replenishment connection valve, maintenance and repair work can still be performed on components such as the replenishment tank 161 and the replenishment pump 1621 without shutting down the system. The replenishment connection valve can be a shut-off valve.

[0080] A liquid level sensor 1611 can also be installed at the bottom of the replenishment tank 161. The liquid level sensor 1611 can monitor the liquid level in the replenishment tank 161 in real time. When the liquid level is too low, a warning message will be issued to notify the operator to replenish the first heat exchange medium in the replenishment tank 161 in time.

[0081] Since the output end of the replenishment pipeline 162 is located in front of the filter assembly 140, for example, the output end of the replenishment pipeline 162 can be located between the constant pressure assembly 150 and the filter assembly 140, so that the first heat exchange medium replenished in the replenishment tank 161 enters the first output pipeline 110, passes through the filter assembly 140 before entering the power assembly 130, so as to protect the circulation pump 132 in the power assembly 130.

[0082] In some embodiments, a pressure relief valve 115 is provided downstream of the power assembly 130 in the first circulation pipeline. The pressure relief port of the pressure relief valve 115 is connected to a pressure relief pipeline 1151, and the other end of the pressure relief pipeline 1151 is connected to the input end of the replenishment tank 161.

[0083] Specifically, the pressure relief valve 115 can be connected to the first output pipeline 110 and located between the power assembly 130 and the heat exchanger 200. The pressure relief valve 115 automatically opens when the pressure in the first output pipeline 110 is too high, discharging excess first heat exchange medium from its outlet to reduce the pressure within the first output pipeline 110. The discharged first heat exchange medium can be transported to the replenishment tank 161 via the pressure relief pipeline 1151 for recycling. The pressure relief valve 115 can be located on the output side of the power assembly 130 to promptly relieve pressure when the output pressure of the power assembly 130 is too high, preventing excessive pressure on the first heat exchange medium as it passes through subsequent components.

[0084] In some embodiments, a drainage branch 116 is connected to the first circulation pipeline, and a drainage valve 1161 is provided on the drainage branch 116.

[0085] Specifically, the drain branch 116 can be connected to the first output pipe 110 and positioned near the output end of the heat dissipation object 500. The drain valve 1161 can be located at the output end of the drain branch 116. During normal operation, the drain valve 1161 is in the closed state. When the internal pressure of the first cooling device 100 is too high, the drain valve 1161 can be manually opened to discharge part of the first heat exchange medium, thereby manually reducing the pressure inside the first cooling device 100. The drain valve 1161 can be a needle valve or a ball valve.

[0086] In some embodiments, the first cooling device 100 further includes an exhaust assembly 170, which includes an exhaust valve 171 and an exhaust control valve 172. One end of the exhaust control valve 172 is connected to the first circulation pipeline, and the exhaust valve 171 is connected to the other end of the exhaust control valve 172.

[0087] Specifically, the exhaust control valve 172 can be connected to the first input pipeline 120. During normal operation, the exhaust control valve 172 is in the open state, connecting the exhaust valve 171 to the first input pipeline 120, allowing the gas in the first input pipeline 120 to be discharged from the exhaust port of the exhaust valve 171, ensuring the heat exchange efficiency of the first heat exchange medium. The exhaust assembly 170 can be located near the first output end of the heat exchange device 200 to promptly discharge the gas generated during the heat exchange process of the first heat exchange medium. After closing the exhaust control valve 172, the connection between the exhaust valve 171 and the first input pipeline 120 can be disconnected, allowing the exhaust valve 171 to be disassembled, repaired, or replaced without shutting down the system. The exhaust valve 171 can be a needle valve, and the exhaust control valve 172 can be a ball valve.

[0088] In addition, since the first output pipe 110 is installed at a low position and the first input pipe 120 is installed at a high position, the drain branch 116 can be connected to the first output pipe 110 and the exhaust assembly 170 can be connected to the first input pipe 120. The exhaust assembly 170 is usually installed at the top of the entire system, which is more conducive to exhausting the air in the system. The drain branch 116 is located at the bottom of the entire system, which is more conducive to maintenance and other scenarios.

[0089] In some embodiments, the first circulation pipeline further includes a diversion pipeline 180, the input end of the diversion pipeline 180 being connected to the first output pipeline 110, the output end of the diversion pipeline 180 being connected to the first input pipeline 120, and the input end of the diversion pipeline 180 being located on the side of the input end of the power assembly 130; a diversion control valve 181 connected in series is provided on the diversion pipeline 180.

[0090] Specifically, the input end of the diversion pipe 180 can be connected to the first output pipe 110 via a tee connector, and the output end can also be connected to the first input pipe 120 via a tee connector. When the first cooling device 100 is operating normally, the diversion control valve 181 is closed, and the first heat exchange medium circulates normally through the first output pipe 110, the power component 130, the heat exchange device 200, and the first output pipe 110. When the heat dissipation object 500 is operating under low load, the heat absorbed by the first heat exchange medium after passing through the heat dissipation object 500 is less. At this time, the diversion control valve 181 can be opened, allowing some of the first heat exchange medium to flow directly into the first input pipe 120 through the diversion pipe 180, reducing the heat exchange pressure of the heat exchange device 200 and reducing energy consumption. By controlling the opening degree of the diversion control valve 181, the flow rate of the first heat exchange medium in the diversion pipe 180 can be adjusted to regulate the flow rate of the first heat exchange medium diverted in the diversion pipe 180. In addition, a flow control valve 182 may be installed on the flow diversion line 180 to improve the regulation capability of the flow control valve 181 at low flow rates. The flow control valve 181 may be a butterfly valve.

[0091] In some embodiments, at least one fifth pressure sensor 118 and at least one first temperature sensor 117 are provided on the side of the first input pipe 120 near the heat dissipation object 500; at least one sixth pressure sensor 121 and at least one second temperature sensor 122 are provided on the side of the first output pipe 110 near the heat dissipation object 500.

[0092] Specifically, the fifth pressure sensor 118 and the first temperature sensor 117 are used to acquire the pressure and temperature of the first heat exchange medium before it enters the heat dissipation object 500. A fifth connecting valve can be connected between the fifth pressure sensor 118 and the first input pipeline 120. The fifth connecting valve is used to control the on / off connection between the fifth pressure sensor 118 and the first input pipeline 120. After closing the fifth connecting valve, the fifth pressure sensor 118 can be inspected, disassembled, and replaced without shutting down the system. The fifth connecting valve can be a ball valve.

[0093] The number of fifth pressure sensors 118 and the number of first temperature sensors 117 can be arbitrary. For example, there can be two fifth pressure sensors 118 and two first temperature sensors 117, so as to more accurately monitor the pressure and temperature of the first heat exchange medium. Furthermore, when one of the fifth pressure sensors 118 or the first temperature sensor 117 is repaired or replaced, the other fifth pressure sensor 118 and the first temperature sensor 117 can still monitor the first heat exchange medium.

[0094] The sixth pressure sensor 121 and the second temperature sensor 122 are used to acquire the pressure and temperature of the first heat exchange medium when it is output from the heat dissipation object 500. By monitoring the pressure and temperature of the first heat exchange medium when it enters and exits the heat dissipation object 500, abnormal conditions in the system operation can be detected in a timely manner, and corresponding measures can be taken for adjustment. A sixth connecting valve is provided between the sixth pressure sensor 121 and the first output pipeline 110. The sixth connecting valve is used to control the opening and closing of the sixth pressure sensor 121 and the first output pipeline 110. After closing the sixth connecting valve, the sixth pressure sensor 121 can be inspected, disassembled, and replaced without stopping the system. The sixth connecting valve can be a ball valve.

[0095] The number of the sixth pressure sensor 121 and the number of the second temperature sensor 122 can be arbitrary. For example, there can be two of each of the sixth pressure sensor 121 and the second temperature sensor 122. This can improve the accuracy of monitoring and also allow the other sensor to continue monitoring the state of the second heat exchange medium while one of them is being repaired or replaced.

[0096] In addition, a flow meter may be installed on the first output pipe 110. The flow meter is used to monitor the flow rate of the first heat exchange medium passing through the flow meter in the first output pipe 110, so as to intuitively and visually monitor the stability of the entire first cooling device 100 operation through the flow rate of the first heat exchange medium.

[0097] In some embodiments, the second cooling device 300 includes a second circulation pipeline disposed between the heat exchange device 200 and the heat dissipation device 400, so that the second heat exchange medium circulates between the heat exchange device 200 and the heat dissipation device 400 through the second circulation pipeline.

[0098] The second circulation pipeline is also a fluid transport component composed of multiple transport pipes. The second circulation pipeline can be continuous or segmented. For example, the second circulation pipeline includes a second output pipeline 310 and a second input pipeline 320. The two ends of the second output pipeline 310 are respectively connected to the second output end of the heat exchange device 200 and the input end of the heat dissipation device 400, and the two ends of the second input pipeline 320 are respectively connected to the second input end of the heat exchange device 200 and the output end of the heat dissipation device 400.

[0099] Furthermore, the second input line 320 is provided with a flow regulating valve 313, at least one seventh pressure sensor 311 and at least one third temperature sensor 312, and at least one eighth pressure sensor 321 and at least one fourth temperature sensor 322.

[0100] Specifically, the heat exchanger 200 also includes a second heat exchange pipeline for the flow of the second heat exchange medium, with its two ends being the second input and second output of the heat exchanger 200, respectively. The flow directions of the first and second heat exchange media in the heat exchanger 200 can be opposite to increase their heat exchange efficiency. For example, the first input and second output are located on the lower side of the heat exchanger 200, and the first output and second input are located on the upper side. The heat dissipation device 400 can be installed outdoors, utilizing the cool outdoor air for natural cooling to achieve heat exchange and cooling of the second heat exchange medium. For example, the heat dissipation device 400 can be a closed-loop cooling tower or a dry cooler.

[0101] After being cooled by the heat dissipation device 400, the second heat exchange medium is input into the heat exchange device 200 through the second input pipe 320 to exchange heat with the first heat exchange medium. The heated second heat exchange medium is then transported to the heat dissipation device 400 through the second output pipe 310, where the heat dissipation device 400 cools the second heat exchange medium again.

[0102] The seventh pressure sensor 311 and the third temperature sensor 312 are used to acquire the pressure and temperature of the second heat exchange medium within the second output pipeline 310, respectively. A seventh connecting valve connects the seventh pressure sensor 311 to the second output pipeline 310. The seventh connecting valve controls the on / off connection between the seventh pressure sensor 311 and the second output pipeline 310. After closing the seventh connecting valve, the seventh pressure sensor 311 can be inspected, disassembled, and replaced without shutting down the system. The seventh connecting valve can be a ball valve.

[0103] The eighth pressure sensor 321 and the fourth temperature sensor 322 are used to acquire the pressure and temperature of the second heat exchange medium within the second input pipe 320, respectively. An eighth connecting valve connects the eighth pressure sensor 321 to the second input pipe 320. This valve controls the connection between the eighth pressure sensor 321 and the first input pipe 120. After closing the eighth connecting valve, the eighth pressure sensor 321 can be inspected, disassembled, and replaced without shutting down the system. The eighth connecting valve can be a ball valve. Furthermore, the number of the seventh pressure sensor 311, the third temperature sensor 312, the eighth pressure sensor 321, and the fourth temperature sensor 322 can be arbitrary.

[0104] The flow regulating valve 313 is used to control the flow rate of the second heat exchange medium entering the heat dissipation device 400, thereby regulating the circulation flow rate of the second heat exchange medium and enhancing or weakening the convective heat transfer between the heat exchange device 200 and the heat dissipation device 400. The flow regulating valve 313 can be an electrically operated two-way regulating valve and is connected to the controller of the cooling system. The controller uses logic to control the opening of the flow regulating valve 313, thereby enabling real-time adjustment of the second heat exchange medium in the second cooling circulation device to achieve the required temperature.

[0105] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cooling system, characterized in that, It includes a first cooling device and a heat exchange device. The first cooling device includes a first circulation pipeline and a power component. The first circulation pipeline is disposed between the heat exchange device and the heat dissipation object. The power component is connected to the first circulation pipeline and is used to drive the first heat exchange medium to circulate in the first circulation pipeline. The power assembly includes at least two parallel pump body passages. Each pump body passage is provided with a pump body input control valve, a circulating pump, a first check valve, and a pump body output control valve connected in series along the flow direction of the first heat exchange medium. Each pump body passage is provided with a first pressure sensor on the output end side of the circulating pump to obtain the pump inlet pressure value of the circulating pump. At least one second pressure sensor is provided upstream of the power component, and at least one third pressure sensor is provided downstream. The second pressure sensor is used to obtain the total input pressure value of the power component, and the third pressure sensor is used to obtain the total output pressure value of the power component.

2. The cooling system according to claim 1, characterized in that, The first cooling device further includes a filter assembly disposed in the first circulation pipeline, and the second pressure sensor is located between the filter assembly and the power assembly; The filtration assembly includes a filtration pipeline and a bypass pipeline connected in parallel. The filtration pipeline is equipped with a filtration input control valve, a filter, and a filtration output control valve connected in series along the flow direction of the first heat exchange medium. The bypass pipeline is equipped with a bypass control valve. A fourth pressure sensor is located upstream of the filter.

3. The cooling system according to claim 1, characterized in that, The first cooling device further includes a pressure regulating component, which includes an expansion tank and a pressure regulating pipeline. One end of the pressure regulating pipeline is connected to the expansion tank and the other end is connected to the first circulation pipeline. A first pressure regulating control valve is provided on the pressure regulating pipeline. A pressure regulating branch is also connected between the first pressure regulating control valve and the expansion tank, and a second pressure regulating control valve is connected to the pressure regulating branch.

4. The cooling system according to claim 2, characterized in that, The first cooling device further includes a liquid replenishment assembly, which is located upstream of the filtration assembly; The fluid replenishment assembly includes a fluid replenishment tank and a fluid replenishment pipeline. The input end of the fluid replenishment pipeline is connected to the output end of the fluid replenishment tank, and the output end of the fluid replenishment pipeline is connected to the first circulation pipeline. The fluid replenishment pipeline is provided with a fluid replenishment pump, a second one-way valve, and a fluid replenishment control valve connected in series from the fluid replenishment tank toward the first circulation pipeline.

5. The cooling system according to claim 4, characterized in that, The first circulation pipeline is provided with a pressure relief valve downstream of the power component. The pressure relief valve is connected to a pressure relief pipeline, and the other end of the pressure relief pipeline is connected to the input end of the replenishment tank.

6. The cooling system according to any one of claims 1-5, characterized in that, The first circulation pipeline includes a first output pipeline, a first input pipeline, and a branch pipeline. The two ends of the first output pipeline are respectively connected to the output end of the heat dissipation object and the first input end of the heat exchange device. The two ends of the first input pipeline are respectively connected to the first output end of the heat exchange device and the input end of the heat dissipation object. The input end of the branch pipeline is connected to the first output pipeline, and the output end of the branch pipeline is connected to the first input pipeline. A branch control valve is provided on the branch pipeline.

7. The cooling system according to claim 6, characterized in that, A drainage branch is connected to the first output pipeline, and a drainage valve is installed on the drainage branch.

8. The cooling system according to claim 6, characterized in that, An exhaust assembly is provided on the first input pipeline. The exhaust assembly includes an exhaust control valve and an exhaust valve. One end of the exhaust control valve is connected to the first input pipeline, and the exhaust valve is connected to the other end of the exhaust control valve.

9. The cooling system according to claim 8, characterized in that, The first output pipe is provided with at least one fifth pressure sensor and at least one first temperature sensor on the side near the heat dissipation object; the first input pipe is provided with at least one sixth pressure sensor and at least one second temperature sensor on the side near the heat dissipation object.

10. The cooling system according to any one of claims 1-5, characterized in that, The cooling system further includes a second cooling device and a heat dissipation device. The second cooling device includes a second circulation pipeline connected between the heat exchange device and the heat dissipation device, for allowing the second heat exchange medium to circulate between the heat exchange device and the heat dissipation device. The second circulation pipeline includes a second output pipeline and a second input pipeline; the two ends of the second output pipeline are respectively connected to the second output end of the heat exchange device and the input end of the heat dissipation device, and the second input pipeline is provided with a flow regulating valve, at least one seventh pressure sensor and at least one third temperature sensor; the two ends of the second input pipeline are respectively connected to the second input end of the heat exchange device and the output end of the heat dissipation device, and the second input pipeline is provided with at least one eighth pressure sensor and at least one fourth temperature sensor.

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