Water cooling cabinet and water cooling system

The integration of an ion exchange tank and water refill pump in the water cooling system addresses the issue of water hardness, ensuring stable operation and extended service life by preventing sludge formation and maintaining efficient heat dissipation in SVG reactive power compensation cabinets.

DE202025105732U1Active Publication Date: 2026-03-05CHINA RAILWAY NO 8 ENG GRP CO LTD +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
DE202025105732
Authority / Receiving Office
DE · DE
Patent Type
Utility models
Current Assignee / Owner
Priority Date
2024-11-14
Filing Date
2025-09-24
Publication Date
2026-03-05
Estimated Expiration
2035-09-30

AI Technical Summary

Technical Problem

The hardness of liquid water used for cooling in SVG reactive power compensation cabinets leads to the accumulation of water flakes, slowing the flow and potentially causing blockages in the circulation line, which affects the stability and safety of the system.

Method used

A water cooling system with an ion exchange tank and water refill pump to soften the cooling water, integrated within the cabinet, along with a pump to ensure continuous flow and a water refill tank for centralized maintenance, preventing sludge formation and enhancing system reliability.

Benefits of technology

The system maintains stable operation by preventing sludge formation, ensuring timely heat dissipation, reducing failure rates, and extending the service life of the water cooling system, thus supporting the reliable operation of the SVG reactive power compensation cabinet in subways.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 00000000_0000_ABST
    Figure 00000000_0000_ABST
Patent Text Reader

Abstract

Water cooling cabinet, characterized by: a cabinet body (1) wherein the cabinet body (1) has a receiving space (2) comprising a water cooling line (3) and a water refilling container (4); the water cooling line (3) includes a pump (5); the water refill tank (4) is connected to the water cooling line (3) via a water refill line (9); the water refill line (9) includes an ion exchange tank (11) and a water refill pump (10); the ion exchange tank (11) is spaced apart from the water refill pump (10); and the ion exchange tank (11) is arranged upstream of the water refill pump (10) in a medium circulation direction of the water refill line (9).
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The present utility model relates to the area of ​​heat dissipation of an SVG reactive power compensation cabinet for subways and in particular to a water cooling cabinet and a water cooling system. State of the art

[0002] In subway traction power supply systems, reactive power causes a significant voltage drop within the system, including the traction transformer and the contact network, leading to a voltage reduction at the end of the traction network. When the subway traction system is in operation, the reactive power changes rapidly, and the voltage fluctuates considerably, seriously impacting the power quality of the public grid and posing potential safety risks. To address these issues, the SVG reactive power compensation cabinet is used to compensate for the line's reactive power. During operation, the SVG reactive power compensation cabinet generates a substantial amount of heat. In a relatively enclosed environment, water cooling is typically employed for heat dissipation. To ensure the stable operation of the water-cooled heat dissipation device, the cooling medium must be replenished regularly.

[0003] Currently, the additional cooling medium for the water-cooled heat dissipation device is liquid water, which is replenished directly by the operator from an external water source. The hardness of the replenished liquid water is relatively high. During operation of the water-cooled heat dissipation device, flakes of water accumulate on the inner wall of the circulation pipe, slowing the flow of liquid water and, in severe cases, potentially leading to blockage of the circulation line and failure of the water-cooled heat dissipation device. Summary of the utility model

[0004] The purpose of the utility model is to provide a water cooling cabinet and a water cooling system by overcoming the shortcomings of the prior art in the supply of liquid water with a higher hardness to an SVG reactive power compensation cabinet.

[0005] In its first aspect, the present utility model provides for a water cooling cabinet, comprising: a cabinet body, wherein the cabinet body includes a receiving space that includes a water cooling line and a water refill tank; The water cooling line is equipped with a pump; the water refill tank is connected to the water cooling line via a water refill line; the water refill line is equipped with an ion exchange tank and a water refill pump; the ion exchange tank is spaced apart from the water refill pump; and the ion exchange tank is arranged upstream of the water refill pump in a medium circulation direction of the water refill line.

[0006] According to the water cooling cabinet of the present utility model, a pump is used to drive the flow of cooling water in a water cooling line, allowing the cooling water to flow continuously from one end of the water cooling line to the other. A water refill tank replenishes the cooling water in the water cooling line. A water refill pump is located on the water refill line. The water refill pump pumps the cooling water from the water refill tank into the water cooling line to replenish the fluid. An ion exchange tank is located downstream of the water refill pump, and the ion exchange tank is used to remove hardness ions from the cooling water, thus softening the cooling water entering the water cooling line to prevent the formation of sludge. Both the water refill tank and the pump are located in the cabinet, which facilitates centralized maintenance for the operators.

[0007] Preferably, the water cooling line comprises a liquid inlet pipe section, a liquid outlet pipe section, and a plurality of water cooling branches; one end of the water cooling branches is connected to the liquid inlet pipe section, and the other end is connected to the liquid outlet pipe section; each of the water cooling branches is arranged with the pump; and the water refill line is connected to the liquid inlet pipe section.

[0008] Between the liquid inlet pipe section and the liquid outlet pipe section, a multitude of water cooling branches are arranged, each with its own pump. The pumps can be switched on alternately, thus extending their service life and consequently the maintenance cycle of the water cooling cabinet. When a rapid flow of the medium in the water cooling line is required, the flow rate of the cooling water is increased by simultaneously activating multiple pumps.

[0009] Preferably, the liquid inlet pipe area and the liquid outlet pipe area each extend through the cabinet body; and the liquid inlet pipe area and the liquid outlet pipe area are each provided with flanges.

[0010] The ends of the liquid inlet and outlet pipe sections each include flanges, and the water cooling line can be quickly connected to the piping via these flanges. The connection between the liquid inlet and outlet pipe sections is located outside the cabinet body for ease of operation.

[0011] Preferably, the water refill container includes a water refill chamber; and the water refill line is connected to the bottom of the water refill chamber.

[0012] The water refill chamber stores cooling water, and the water refill line is connected to the bottom of the water refill chamber to facilitate the draining of the cooling water under the influence of gravity.

[0013] Preferably, the receiving space comprises a bracket connected to a base plate of the cabinet body; the bracket is connected to the water refill container; the water refill container is spaced away from the base plate; and the base plate is provided with a support column that rests against the water refill line.

[0014] The base of the water refill tank is supported by the bracket on a base plate located away from the cabinet body, creating a gap between the tank and the base plate. The water refill line can be routed between the tank and the base plate, simplifying its installation at the bottom of the tank. This gap between the tank and the base plate provides convenient access for maintenance. The support column secures the water refill line, preventing deformation and loosening. A clamping groove is located at the top of the support column.By adjusting and connecting the clamping groove to the outer wall of the water refill pipe, the water refill pipe can be further clamped and fixed, thereby improving the stability of the water refill pipe.

[0015] Preferably, the water cooling line includes a pressure tank and a pressure gauge; the pressure tank is located between the water refill line and the pump; the pressure tank is connected to the cabinet body; and the pressure gauge is spaced away from the pressure tank.

[0016] An airlock is located inside the pressure tank, and pressure is exerted on the cold water line via the pressure tank to ensure circulation pressure in the cold water line and to improve the flowability of the cooling medium. The pressure gauge can monitor the pressure change in the water cooling line.

[0017] Preferably the cabinet body is a rectangular cabinet body, and one side surface of the cabinet body is provided with a maintenance opening that is connected to the receiving space; and the maintenance opening is covered with a cover plate that is hinged to the cabinet body.

[0018] The integrated maintenance opening makes it easy for the operator to service the components inside the cabinet. A cover plate conceals the access opening and protects the components within the cabinet body. The cover plate is hinged to the cabinet body for easy opening and closing. A rectangular cabinet may be more convenient to install.

[0019] In a second aspect, the present utility model provides a water cooling system comprising a heat exchanger, a water cooling plate, a circulation line and the aforementioned water cooling cabinet, wherein one end of the water cooling line is connected to the heat exchanger and the other end to the water cooling plate; and one end of the circulation line is connected to the heat exchanger and the other end to the water cooling plate.

[0020] According to a water cooling system of the present utility model, the cooling water fed into the water cooling line can be softened by the ion exchange tank, the water refill tank, the water refill line, and the ion exchange tank to prevent the formation of sludge in the water cooling system, ensure the heat dissipation performance of the water cooling system, guarantee the normal operation of the water cooling system, reduce the failure rate of the water cooling system, and improve the service life of the water cooling system. This allows a reactive compensation cabinet SVG in the subway to dissipate heat in a timely manner, ensuring the normal operation of the subway. Long-term storage of the cooling water in the water refill tank allows for rapid replenishment of the cooling water in the water cooling line, thus reducing the workload for operators.

[0021] Preferably, the water refill line comprises a water refill branch that is connected to the circulation line; the water refill branch is located downstream of the ion exchange tank in a mean circulation direction of the water refill line.

[0022] By providing the water refill branch, the water refill tank simultaneously replenishes the cooling water in the water cooling line and the circulation line. This prevents high pressure on one side of the circulation loop from affecting the local cooling water flow rate in the water cooling system and ensures the stable operation of the water cooling system.

[0023] Preferably it further comprises a heating pipe area through which the water cooling plate is connected to the water cooling pipe, and the outer wall of the heating pipe area is provided with a heating unit.

[0024] In low-temperature environments, the cooling water in the water cooling system can freeze. The heating unit, which warms the pipework, returns the cooling water to a liquid state, thus ensuring the normal operation of the water cooling system.

[0025] Compared to the prior art, the present utility model has the following advantageous effects. 1. According to the water cooling cabinet of this utility model, a pump is used to drive the flow of cooling water in a water cooling line, enabling the cooling water to flow continuously from one end of the water cooling line to the other. A water refill tank replenishes the cooling water in the water cooling line. A water refill pump is located on the water refill line. The water refill pump pumps the cooling water from the water refill tank into the water cooling line to replenish the fluid. Downstream of the water refill pump, an ion exchange tank is located. The ion exchange tank serves to remove hardness ions from the cooling water, thus softening the cooling water entering the water cooling line and preventing the formation of sludge. Both the water refill tank and the pump are located within the cabinet body, facilitating centralized maintenance for the operators. 2. According to a water cooling system of the present utility model, the cooling water fed into the water cooling line is softened by the ion exchange tank via the water refill tank, the water refill line, and the ion exchange tank. This prevents the formation of sludge in the water cooling system, ensures the heat dissipation performance of the water cooling system, guarantees the normal operation of the water cooling system, reduces the failure rate of the water cooling system, and improves the service life of the water cooling system. This allows an SVG reactive compensation cabinet for the subway to dissipate heat in a timely manner and ensures the normal operation of the subway. Long-term storage of the cooling water in the refill tank allows for rapid replenishment of the cooling water in the water cooling line, thus reducing the workload for operators. Brief description of the drawings Fig. Figure 1 is a schematic structural representation of a water cooling cabinet of the present utility model; Fig. Figure 2 is a partially enlarged structural representation of the water cooling cabinet of the present utility model; Fig. Figure 3 is a schematic structural representation of a water cooling system of the present utility model. Reference symbol:

[0026] 1 - Cabinet body, 2 - Receiving chamber, 3 - Water cooling line, 31 - Liquid inlet pipe area, 32 - Water cooling branch, 33 - Liquid outlet pipe area, 4 - Water refill tank, 5 - Pump, 6 - Bracket, 7 - Maintenance opening, 8 - Cover plate, 9 - Water refill line, 10 - Water refill pump, 11 - Ion exchange tank, 12 - Pressure tank, 13 - Pressure gauge, 14 - Support column, 101 - Heat exchanger, 102 - Water cooling plate, 103 - Circulation line, 104 - Water refill branch, 105 - Heating unit. Detailed description

[0027] The present utility model is described in more detail below with reference to specific embodiments. However, it should not be understood that the scope of the subject matter of the present utility model described above is limited to the following examples, and it is intended that the present utility model falls within the scope of the present utility model.

[0028] In the description of specific embodiments of this utility model, the terms "top", "bottom", "left", "right", "middle", "inside", "outside", and the like, unless otherwise specified, refer to expressions based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product / device / equipment of this utility model is normally used. These orientation or positional relationship terms are used solely to facilitate the description of aspects of this utility model or to simplify the description of specific embodiments for the person skilled in the art, enabling them to quickly understand these aspects.They do not mean or imply that a particular device / part / element must have a particular orientation or be designed and operated in a particular positional relationship, and should therefore not be construed as a limitation of the present utility model.

[0029] Furthermore, the presence of terms such as "horizontal," "vertical," "overhanging," "parallel," and the like does not mean that the respective device / component / element must be absolutely horizontal or vertical, overhanging, or parallel, but rather that it may be slightly inclined or offset. If "horizontal" merely means that its direction is more horizontal than "vertical," this does not mean that the structure must be completely horizontal, but rather that it may be slightly inclined. Alternatively, it can simply be assumed that the respective means / parts / elements arranged in a "horizontal," "vertical," "overhanging," "parallel," etc., orientation may be arranged with an error / deviation of ±10%, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4% relative to the respective direction.As long as the relevant device / part / element is within the error / deviation range, its function in the solution of the present utility model can still be fulfilled.

[0030] Furthermore, the terms “first”, “second”, “third” and the like are used in such expressions merely to distinguish between descriptions of the same or similar elements, and are not to be understood as emphasizing or implying a relative importance of the respective element.

[0031] Furthermore, in the description of the embodiments of the present utility model, "some," "a multitude," and "several" mean at least two. There can be 2, 3, 4, 5, 6, 7, 8, 9, etc., and there can be more than 9.

[0032] Furthermore, unless expressly stated / restricted / limited otherwise, the terms "provide," "fasten," "connect," "link," "provide with," "place," and "arrange" in the description of the technical solution of this utility model are to be understood in a broader sense. For example, it may be a permanent connection, a detachable connection, or an integral connection, and it may be a fastener commonly used in the trade, such as welding, riveting, bolting, screwing, etc. The connection may be a mechanical connection, an electrical connection, or a communication connection. They may be connected directly or indirectly via an intermediate medium, and communication may take place between the two elements. Example 1

[0033] As in the Fig. Figures 1 to 3 show a water cooling cabinet. a cabinet body 1, wherein the cabinet body 1 has a receiving space 2 comprising a water cooling line 3 and a water refill tank 4; The water cooling line 3 includes a pump 5; the water refill tank 4 is connected to the water cooling line 3 via a water refill line 9; the water refill line 9 includes an ion exchange tank 11 and a water refill pump 10; the ion exchange tank 11 is spaced apart from the water refill pump 10; and the ion exchange tank 11 is located upstream of the water refill pump 10 in the medium circulation direction of the water refill line 9.

[0034] Pump 5 drives the flow of cooling water in water cooling line 3, ensuring a continuous flow from one end of the line to the other. Water refill tank 4 replenishes cooling water in the water cooling line. A water refill pump 10 is located on water refill line 9. This pump transfers cooling water from the refill tank 4 into water cooling line 3 to replenish the fluid. An ion exchange tank 11 is located downstream of the refill pump 10. This tank removes hardness ions from the cooling water, softening the water entering the line and preventing sludge formation. Both the water refill tank 4 and pump 5 are housed within cabinet 1, facilitating centralized maintenance for operators.

[0035] In one or more embodiments, the water cooling line 3 consists of a liquid inlet pipe section 31, a liquid outlet pipe section 33, and two water cooling branches 32, such that one end of each water cooling branch 32 is connected to the liquid inlet pipe section 31 and the other end to the liquid outlet pipe section 33, and each water cooling branch 32 is equipped with a pump 5. During operation, one of the pumps 5 can be selected for operation, and the pumps 5 on different water cooling branches 32 can be used alternately to improve the overall service life of the pump 5 in the water cooling housing and thereby extend the maintenance cycle of the water cooling housing. If it is necessary to make the cooling water flow quickly in the water cooling line 3, two pumps 5 can be started simultaneously.The water refill line 9 is connected to the liquid inlet pipe section 31, so that the water refill line 9 can be quickly flushed by the pump 5 after the water cooling line 3 has been filled. In some embodiments, one or more water cooling branches 32 may be provided.

[0036] In an alternative embodiment, the liquid inlet pipe section 31 and the liquid outlet pipe section 33 each extend through the cabinet body 1, such that the end section of the liquid inlet pipe section 31 and the end section of the liquid outlet pipe section 33 both extend out of the cabinet body 1. A pipeline is connected outside the cabinet body 1, which is convenient for operation. A flange is provided at the end of the liquid inlet pipe section 31 to facilitate pipe connection, and a flange is provided at the end of the liquid outlet pipe section 33 to facilitate pipe connection.

[0037] In one or more embodiments, the water refill reservoir 4 is a column-shaped container body. The water refill reservoir 4 has a water refill cavity for storing cooling water. The water refill cavity should be a sealed space to prevent the cooling water from being contaminated multiple times within the water refill cavity. The water refill reservoir 4 includes an air hole that communicates with the water refill cavity, and the air hole opens only when water is being added to the water cooling line 3, allowing the cooling water to flow smoothly into the water refill line 9. The water refill line 9 communicates with the bottom of the water supply chamber and facilitates the drainage of the cooling water from the water supply chamber by gravity.In some embodiments, the bottom of the water supply chamber is designed as a funnel, and the water refill line 9 is connected to the lowest part of the funnel.

[0038] In an alternative embodiment, the cabinet body 1 is provided with a bracket 6, which is a frame component. The bracket 6 is arranged on a base plate of the cabinet body 1, being connected to and attached to the base plate by means of a screw connection. A water refill reservoir 4 is arranged on the top of the bracket 6. The water refill reservoir 4 is detachably connected to the bracket 6. The water refill reservoir 4 is spaced apart from the base plate. A water refill line 9 can be arranged between the water refill reservoir 4 and the base plate to facilitate operation and maintenance for an operator. A support column 14 is arranged on the bracket 6.One end of the support column 14 is connected to the bracket 6, and the other end is in contact with the water refill line 9 to support the water refill line 9 and prevent deformation and loosening of the water refill line 9. In some embodiments, a through-groove is provided at the upper end of the support column 14 so that the through-groove can be clamped to the water refill line 9, further improving the stability of the water refill line 9.

[0039] In one or more embodiments, the water cooling line 3 comprises a pressure tank 12 and a pressure gauge 13. The pressure tank 12 is located between the water refill line 9 and the pump 5, and the pressure tank 12 is connected to the cabinet body 1. The pressure tank 12 includes an air bladder to increase the circulation pressure of the cooling water. The pressure gauge 13 can monitor the pressure change in the water cooling line 3.

[0040] In one or more embodiments, the cabinet body 1 is a rectangular cabinet body 1, which is convenient for installation and placement. The side surface of the cabinet body 1 includes a maintenance opening 7, which is connected to the receiving space 2, thus facilitating access and maintenance of the components inside the cabinet body 1 for a worker. The maintenance opening 7 is covered by a cover plate 8 to protect the components inside the cabinet 1, and the cover plate 8 is hinged to the cabinet 1 so that the cover plate 8 can be easily opened and closed. Example 2

[0041] As in Fig.Figure 3 shows a water cooling system comprising a heat exchanger 101, a water cooling plate 102, a circulation line 103, and a water cooling cabinet from Example 1. One end of the water cooling line 3 is connected to the heat exchanger 101, and the other end is connected to the water cooling plate 102. One end of the circulation line 103 is connected to the heat exchanger 101, and the other end is connected to the water cooling plate 102.

[0042] This allows the cooling water fed into water cooling line 3 to be softened by the ion exchange tank 11 via the water refill tank 4, the water refill line 9, and the ion exchange tank 11. This prevents the formation of sludge in the water cooling system, ensures the heat dissipation performance of the water cooling system, guarantees the normal operation of the water cooling system, reduces the failure rate of the water cooling system, and extends the service life of the water cooling system. This enables a reactive compensation cabinet SVG in the subway to dissipate heat in a timely manner and ensures the normal operation of the subway. The long-term storage of cooling water in the refill tank 4 allows for rapid replenishment of cooling water into water cooling line 3, reducing the workload for operators.

[0043] In one or more embodiments, the water refill line 9 includes a water refill branch 104. The water refill branch 104 is connected to the circulation line 103. The water refill branch 104 is located downstream of the ion exchange tank 11 along the medium circulation direction of the water refill line 9. The flow path of the cooling water in the water cooling system is water cooling cabinet-heat exchanger-circulation line-water cooling plate-water cooling cabinet. The water cooling plate 102 is located at a heat-generating position of the SVG reactive power compensation cabinet. The water cooling plate 102 exchanges heat with the SVG reactive power compensation cabinet, and the heat flows with the cooling water. When the cooling water reaches the heat exchanger 101, the heat exchanger 101 cools the cooling water.The cooled cooling water is continuously injected by pump 5 into the water cooling plate 102 to circulate, allowing the water cooling system to continuously transfer heat to the SVG reactive power compensation cabinet.

[0044] In one or more embodiments, a heating pipe section is also included. The water cooling plate 102 is connected to the water cooling line 3 via the heating pipe section, and the outer wall of the heating pipe section includes a heating unit 105. In low-temperature environments, the cooling water in the water cooling system may freeze. The cooling water returns to a liquid state through the heating unit, which heats the pipe section, thus ensuring the normal operation of the water cooling system.

[0045] The foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model. All modifications, equivalents, and improvements that are consistent with and within the scope of the principles of the utility model shall be included within the scope of the utility model.

[0046] The present utility model relates to the heat dissipation area of ​​an SVG reactive power compensation cabinet for subways, and in particular to a water cooling cabinet and a water cooling system, wherein the water cooling cabinet comprises a cabinet body and the cabinet body has a receiving space which is provided with a water cooling line and a water refill tank; the water cooling line is provided with a pump; the water refill tank is connected to the water cooling line via a water refill line; the water refill line is provided with an ion exchange tank and a water refill pump; the ion exchange tank is spaced apart from the water refill pump; and the ion exchange tank is arranged upstream of the water refill pump in a medium circulation direction of the water refill line.The provision of an ion exchange tank and a water refill reservoir allows the water used to refill the cooling medium in a water cooling line to be softened, preventing blockages. By using the aforementioned water cooling cabinet, the water cooling system ensures its normal operation, reduces its failure rate, extends its lifespan, enables timely heat dissipation from the subway's SVG reactive power compensation cabinet, and ensures the subway's smooth operation.

Claims

[1] Water cooling cabinet, characterized by : a cabinet body (1) wherein the cabinet body (1) has a receiving space (2) comprising a water cooling line (3) and a water refilling tank (4); the water cooling line (3) includes a pump (5); the water refill tank (4) is connected to the water cooling line (3) via a water refill line (9); the water refill line (9) includes an ion exchange tank (11) and a water refill pump (10); the ion exchange tank (11) is spaced apart from the water refill pump (10); and the ion exchange tank (11) is arranged upstream of the water refill pump (10) in a medium circulation direction of the water refill line (9). [2] Water cooling cabinet according to claim 1, characterized by, that the water cooling line (3) comprises a liquid inlet pipe section (31), a liquid outlet pipe section (33) and a plurality of water cooling branches (32); one end of the water cooling branches (32) is connected to the liquid inlet pipe section (31), and the other end of the water cooling branches is connected to the liquid outlet pipe section (33); each of the water cooling branches (32) is arranged with the pump (5); and the water refill line (9) is connected to the liquid inlet pipe section (31). [3] Water cooling cabinet according to claim 2, characterized by , that the liquid inlet pipe area (31) and the liquid outlet pipe area (33) each extend through the cabinet body (1); and that the liquid inlet pipe area (31) and the liquid outlet pipe area (33) are each arranged with flanges. [4] Water cooling cabinet according to claim 1, characterized by, that the water refill container (4) has a water refill chamber; and the water refill line (9) is connected to the bottom of the water refill chamber. [5] Water cooling cabinet according to claim 4, characterized by , that the receiving space (2) includes a support (6) which is connected to a base plate of the cabinet body (1); the support (6) is connected to the water refill container (4); the water refill container (4) is spaced away from the base plate; and the base plate includes a support column (14) which rests against the water refill line (9). [6] Water cooling cabinet according to claim 1, characterized by , that the water cooling line (3) includes a pressure tank (12) and a pressure gauge (13); the pressure tank (12) is arranged between the water refill line (9) and the pump (5); the pressure tank (12) is connected to the cabinet body (1); and the pressure gauge (13) is spaced apart from the pressure tank (12). [7] Water cooling cabinet according to any one of claims 1 to 6, characterized by , that the cabinet body (1) is a rectangular cabinet body (1), and a side surface of the cabinet body (1) is arranged with a maintenance opening (7) which is connected to the receiving space (2); and the maintenance opening (7) is covered with a cover plate (8) which is hinged to the cabinet body (1). [8] Water cooling system, characterized by , comprising a heat exchanger (101), a water cooling plate (102), a circulation line (103) and the water cooling cabinet according to any one of claims 1 to 7, wherein one end of the water cooling line (3) is connected to the heat exchanger (101), and its other end is connected to the water cooling plate (102); and one end of the circulation line (103) is connected to the heat exchanger (101), and its other end is connected to the water cooling plate (102). [9] Water cooling system according to claim 8, characterized by , that the water refill line (9) includes a water replenishment branch (104) which is connected to the circulation line (103); the water replenishment branch (104) is arranged downstream of the ion exchange tank (11) in a mean circulation direction of the water refill line (9). [10] Water cooling system according to claim 8, characterized by , that it further comprises a heating pipe section through which the water cooling plate (102) is connected to the water cooling line (3); and the outer wall of the heating pipe section comprises a heating unit (105).