Rapid liquid injection and drainage device of liquid cooling system

Abstract

The utility model belongs to the field of cooling equipment, and discloses a rapid liquid injection and drainage device of a liquid cooling system, the liquid cooling system comprises a liquid cooling pipe, a liquid inlet pipe, a liquid outlet pipe and a liquid outlet pipe, the device comprises a vacuum pump which is installed on a liquid discharge pipe section of a liquid cooling pipe and is used for pumping out air in the liquid cooling pipe; the gas compression unit is used for injecting compressed inert gas into the liquid cooling pipe; the vacuum pump and the control valves are electrically connected with the control unit, and the control unit is used for controlling starting or stopping of the vacuum pump and adjusting the opening degree of each control valve. According to the utility model, the liquid injection speed of the liquid cooling system can be obviously improved, the liquid injection time is shortened, cavitation is effectively avoided, and the operation reliability of the liquid cooling system is improved; and the rapid and thorough liquid drainage effect can be achieved, cooling liquid residues are reduced, the risk of corrosion and damage to system components is reduced, and maintenance and overhaul of the liquid cooling system are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the cooling equipment field, concretely relates to a kind of quick liquid injection and drainage device of liquid cooling system. BACKGROUND

[0002] With the continuous increase of power density of electronic equipment, the application of large-capacity liquid cooling system is becoming more and more widespread. During the installation, maintenance and repair of the liquid cooling system, fast and efficient liquid injection and drainage operation is crucial to improve work efficiency and reduce system downtime. However, the traditional liquid injection and drainage method of liquid cooling system often has the problems of slow speed, easy to produce air pocket, etc., which affects the normal operation and performance of the system. For example, during the liquid injection process, due to uneven liquid flow, air plugs are easily formed in the pipeline and radiator components, hindering the smooth filling of the liquid, resulting in too long liquid injection time; during the liquid drainage process, the residual coolant is difficult to completely drain, which may cause corrosion or damage to the system components. SUMMARY

[0003] The purpose of the utility model is to provide a kind of quick liquid injection and drainage device of liquid cooling system, to solve the problem that, during the liquid injection process, due to uneven liquid flow, air plugs are easily formed in the pipeline and radiator components, hindering the smooth filling of the liquid, resulting in too long liquid injection time; during the liquid drainage process, the residual coolant is difficult to completely drain, which may cause corrosion or damage to the system components.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of quick liquid injection and drainage device of liquid cooling system, the liquid cooling system includes: liquid cooling pipe, a plurality of control valves are installed on the preset position of the liquid cooling pipe;The device includes:

[0005] vacuum pump, the vacuum pump is installed on the liquid drainage pipe segment of the liquid drainage port of liquid cooling pipe, for extracting air in the liquid cooling pipe of the whole liquid cooling system;

[0006] gas compression unit, for injecting compressed inert gas into the liquid cooling pipe;

[0007] control unit, the vacuum pump and a plurality of control valves are electrically connected with the control unit, and the control unit is used to control the start or stop of the vacuum pump and adjust the opening of each control valve.

[0008] Preferably, the control unit includes: a controller, a first drive circuit and a plurality of second drive circuits, the controlled end of the first drive circuit and the controlled end of a plurality of second drive circuits are electrically connected with the IO port of the controller;The drive signal input end of the vacuum pump is electrically connected with the drive output end of the first drive circuit, and the drive signal input end of the corresponding control valve is electrically connected with the drive output end of each second drive circuit.

[0009] Preferably, the control unit further comprises a power module for providing working power for the controller, the first driving circuit, the second driving circuits and the control valves.

[0010] Preferably, each of the control valves is an electromagnetic valve.

[0011] Preferably, the control unit further comprises a plurality of pressure sensors, each of which is electrically connected to an IO port of the controller, and the pressure sensors are also arranged at the preset positions of the liquid cooling pipe to monitor the pressure values at the preset positions of the liquid cooling pipe in real time.

[0012] Preferably, the preset positions of the liquid cooling pipe at least include a liquid discharge pipe segment position, a liquid inlet pipe segment position and a bent pipe segment position of the liquid cooling pipe.

[0013] Preferably, the liquid cooling system further comprises a base, one side of the base is provided with a box body, the liquid inlet and the liquid outlet of the liquid cooling pipe are arranged on the box body, and the liquid cooling pipe is installed on the base.

[0014] Preferably, the liquid cooling pipe comprises a main pipe and a plurality of branch pipes connected to the main pipe.

[0015] Advantages:

[0016] 1. When injecting liquid, the vacuum pump is controlled to extract air in the liquid cooling pipe, so that the inside of the liquid cooling pipe is in a negative pressure or vacuum state, at this time, liquid is injected into the liquid cooling pipe, which can significantly improve the liquid injection speed of the liquid cooling system, reduce the liquid injection time, effectively avoid the generation of air pockets, and improve the operation reliability of the liquid cooling system.

[0017] 2. When discharging liquid, the gas compression unit injects compressed inert gas into the liquid cooling pipe to assist in discharging liquid, which can realize fast and thorough liquid discharge effect, reduce the residue of cooling liquid, reduce the corrosion and damage risk of system components, and facilitate the maintenance and repair of the liquid cooling system. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the embodiments of the present application, and constitute a part of the specification, and are used together with the following detailed description to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the drawings:

[0019] Figure 1 is a front view of the liquid cooling system provided by an embodiment of the present application, and is a side view of the liquid cooling system provided by an embodiment of the present application.

[0020] Figure 2 is a front view of the liquid cooling system provided by an embodiment of the present application, and is a side view of the liquid cooling system provided by an embodiment of the present application.

[0021] Figure 3 is a perspective view of the quick liquid injection and drainage device of the liquid cooling system provided by an embodiment of the present application;

[0022] Figure 4 is a block diagram of the control unit provided by an embodiment of the present application.

[0023] Explanation of reference signs:

[0024] 1, liquid cooling pipe; 2, control valve; 3, base; 4, box body; 5, liquid injection port; 6, liquid drainage port. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the present application will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings. It should be noted that the description of these embodiment modes is used to help understand the present application, but does not constitute a limitation on the present application.

[0026] Figure 1 is a front view of the quick liquid injection and drainage device of the liquid cooling system provided by an embodiment of the present application. As shown in Figure 1 , the present embodiment provides a quick liquid injection and drainage device of a liquid cooling system, the liquid cooling system comprising: a liquid cooling pipe 1, a plurality of control valves 2 are installed at predetermined positions of the liquid cooling pipe 1; and further comprising: a base 3, a box body 4, a liquid cooling machine and a liquid injection pump, wherein the liquid cooling machine and the liquid injection pump are both installed in the box body 4, the liquid cooling machine and the liquid injection pump are both connected to the liquid cooling pipe 1, the liquid injection pump is used to extract cooling liquid (water) and inject the cooling liquid into the liquid cooling pipe 1, the liquid cooling machine is used to make the cooling liquid in the liquid cooling pipe 1 circulate, the liquid cooling machine and the liquid injection pump are conventional components in the liquid cooling system, and the deployment structure thereof in the box body 4 is not shown in the drawings.

[0027] In the embodiment, all the control valves 2 are electromagnetic valves, and the control valves 2 include exhaust valves, intake valves, liquid injection valves, liquid discharge valves, and regulating valves, etc. The liquid cooling pipe 1 mainly includes a liquid discharge pipe section, a liquid intake pipe section, and a bent pipe section. Therefore, the liquid cooling pipe 1 has two liquid discharge ports 6 and one liquid injection port 5. The liquid discharge ports 6 are located on the liquid discharge pipe section, and the liquid discharge pipe section has two sections, one of which is located in the box 4, and the other of which is located on the base 3. One of the liquid discharge ports 6 is located on the box 4, and the other is located on the base 4. The liquid injection port 5 is located on the liquid intake pipe section, and a liquid injection pump can be installed on the liquid intake pipe section. By connecting a water inlet pipe to the liquid injection port 5 and starting the liquid injection pump, cooling liquid can be injected into the liquid cooling pipe 1. The bent pipe section is a bent part of the liquid cooling pipe 1. The structure of the liquid cooling pipe 1 is shown in Figure 1 and Figure 2 .

[0028] In the embodiment, as shown in Figure 3 , the liquid cooling pipe 1 includes a main pipe and a plurality of branch pipes connected to the main pipe. The liquid discharge pipe section and the liquid intake pipe section are mainly the main pipe section, the bent pipe section is mainly the branch pipe section, and the connection part of the branch pipe and the main pipe.

[0029] In order to solve the problems that, during the liquid injection process, due to uneven liquid flow, air blockage is easily formed in the pipeline and the radiator, etc., which hinders the smooth filling of the liquid, and causes the liquid injection time to be too long; during the liquid discharge process, the residual cooling liquid is difficult to be completely discharged, which may cause corrosion or damage to the system components; the device of the embodiment includes a vacuum pump, a gas compression unit, and a control unit;

[0030] The vacuum pump is installed on the liquid discharge pipe section of the liquid cooling pipe 1, and is used to extract air in the liquid cooling pipe 1;

[0031] The gas compression unit is used to inject compressed inert gas, such as nitrogen, into the liquid cooling pipe 1. The gas compression unit includes, but is not limited to, a gas compressor and a gas compression bottle;

[0032] The vacuum pump and the plurality of control valves 2 are electrically connected to the control unit, and the control unit is used to control the start or stop of the vacuum pump, and to adjust the opening degree of each control valve 2.

[0033] Therefore, during the liquid injection, by controlling the vacuum pump to extract air in the liquid cooling pipe 1, the inside of the liquid cooling pipe 1 is in a negative pressure or vacuum state. At this time, liquid is injected into the liquid cooling pipe 1, which can significantly improve the liquid injection speed of the liquid cooling system, reduce the liquid injection time, effectively avoid the generation of air cavities, and improve the operation reliability of the liquid cooling system. During the liquid discharge, by injecting compressed inert gas into the liquid cooling pipe 1 through the gas compression unit to assist the liquid discharge, a fast and complete liquid discharge effect can be achieved, the residual cooling liquid can be reduced, the corrosion and damage risk of the system components can be reduced, and the maintenance and repair of the liquid cooling system are facilitated.

[0034] As a further optimization of the present embodiment, as shown in Figure 4 The control unit comprises a controller, a first driving circuit and a plurality of second driving circuits, wherein the controller can be a PLC (Programmable Logic Controller); the first driving circuit adopts a general vacuum pump driving circuit in the art, and the second driving circuit also adopts a general electromagnetic valve driving circuit in the art, and the specific circuit structures of the two driving circuits are not described one by one in the present embodiment.

[0035] The controlled ends of the first driving circuit and the plurality of second driving circuits are electrically connected with the IO ports of the controller; the driving output end of the first driving circuit is electrically connected with the driving signal input end of the vacuum pump, and the driving output ends of the second driving circuits are electrically connected with the driving signal input ends of the corresponding control valves 2; thus, the on-off of each electromagnetic valve and the start-stop of the vacuum pump can be controlled by the controller.

[0036] As a further optimization of the present embodiment, the control unit further comprises a plurality of pressure sensors, each of which is electrically connected with the IO ports of the controller, and the pressure sensors are also arranged at the preset positions of the liquid cooling pipe 1 for monitoring the pressure values at the preset positions of the liquid cooling pipe 1 in real time. In the present embodiment, the preset positions of the liquid cooling pipe 1 at least include the position of the liquid discharge pipe section of the liquid cooling pipe 1, the position of the liquid inlet pipe section of the liquid cooling pipe 1 and the position of the elbow pipe section of the liquid cooling pipe 1.

[0037] As a further optimization of the present embodiment, the control unit further comprises a power module for providing working power for the controller, the first driving circuit, the plurality of second driving circuits and the plurality of control valves 2.

[0038] In the present embodiment, the steps of the rapid liquid injection are as follows:

[0039] 1. Connect all the components of the liquid cooling system to ensure good system sealing; close all the control valves and other valves, start the vacuum pump, and perform pre-vacuum operation on the loop of the liquid cooling pipe of the liquid cooling system. After the pressure in the system is extracted to a predetermined negative pressure value (for example, -0.08 MPa to -0.1 MPa), the vacuum pump is closed and the system is kept in a vacuum state;

[0040] 2. Turn on the liquid injection pump of the liquid injection channel, and inject cooling liquid into the liquid cooling pipe of the system according to the predetermined flow rate;

[0041] 3. Open the liquid cooling machine far end (the liquid cooling pipe close to the box body 4 is the near end, and the liquid cooling pipe far away from the box body 4 is the far end, so as to Figure 2For example, the vertical liquid cooling pipe is filled with liquid from right to left, and the control valve 2 of the vertical liquid cooling pipe is opened first;

[0042] 4. During the liquid filling process, the pressure changes at key positions in the system (such as the inlet and outlet of the liquid cooling machine, the nodes of the liquid cooling pipe, etc.) are monitored in real time by a pressure sensor. When the pressure sensor detects abnormal pressure changes, a signal is transmitted to the controller. The controller dynamically adjusts the flow and pressure of the liquid filling channel by adjusting the speed of the liquid filling pump or the opening degree of the related control valve, etc., to ensure smooth liquid filling process;

[0043] 4. The control valve 2 at the proximal end is opened again to fill the vertical liquid cooling pipe with liquid (from far to near in sequence, bidirectional opening);

[0044] 5. The liquid filling continues until the cooling liquid fills the entire liquid cooling system and the pressure in the system reaches the normal working pressure range. At this time, the liquid filling pump and all the valves of the liquid filling channels are closed, and the liquid filling operation is completed.

[0045] Therefore, before liquid filling, a pre-vacuum operation is performed on the entire circuit of the liquid cooling system to extract as much air as possible from the system, forming a negative pressure environment inside the system. In this way, during liquid filling, the cooling liquid can flow into the system more quickly under the pressure difference between the outside atmospheric pressure and the negative pressure inside the system, reducing the liquid filling resistance and effectively preventing air from mixing with the cooling liquid to form air pockets;

[0046] Secondly, during the liquid filling process, the pressure changes at various key positions in the system are monitored in real time, and the output pressure and flow of the liquid filling pump are adjusted according to the pressure feedback information. When it is detected that the pressure in a certain area rises too quickly, air pockets or blockages may occur, so the flow of the liquid filling channel in that area is appropriately reduced, while the liquid filling flow in other areas is increased to maintain the stability and uniformity of the overall liquid filling of the system.

[0047] In this embodiment, the steps for rapid liquid discharge are as follows:

[0048] 1. Before liquid discharge, connect the liquid cooling pipe of the liquid cooling system to a gas compression unit (such as a nitrogen cylinder), open the exhaust valve of the system, and balance the pressure in the system with the outside atmospheric pressure;

[0049] 2. Close the exhaust valve, open the liquid discharge valve, and simultaneously turn on the compressed gas source to introduce compressed gas at a certain pressure (for example: 0.1 MPa to 0.2 MPa) into the liquid cooling pipe of the liquid cooling system. The compressed gas enters from the gas inlet of the liquid cooling pipe and pushes the cooling liquid out from the liquid discharge port;

[0050] 3. The draining continues until no coolant flows out of the drain port, and the pressure in the system recovers to close to the pressure of the compressed gas source, indicating that the coolant has been substantially drained; at this time, the compressed gas source and the drain valve are closed, and the draining operation is completed.

[0051] Therefore, during the draining, a compressed gas (such as nitrogen) at a certain pressure is introduced into the liquid cooling system. The compressed gas enters from one end of the system and pushes the coolant out of the drain port at the other end; by controlling the pressure and flow rate of the compressed gas, a fast and thorough draining effect can be achieved; at the same time, the compressed gas can also blow clean the residual coolant in the system, reducing the residual amount of coolant in the system.

[0052] Secondly, a reasonable drain pipe section is designed to reduce the bending and resistance of the drain pipe section. For example, a drain pipe section with large diameter and short length is used, and sudden changes in diameter and sharp turns of the pipeline are avoided as much as possible. A suitable drain valve is provided at the end of the drain pipe section to ensure that the flow capacity of the drain valve can meet the requirements of fast draining, and the drain valve can be completely closed after the draining is completed to prevent foreign matter from entering the system.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A quick liquid injection and discharge device of a liquid cooling system, characterized in that, The liquid cooling system comprises a liquid cooling pipe (1) having a plurality of control valves (2) installed at preset positions of the liquid cooling pipe (1); the device comprises: a vacuum pump installed on a liquid discharge pipe section of a liquid discharge port (6) of the liquid cooling pipe (1) for extracting air in the liquid cooling pipe (1) of the entire liquid cooling system; a gas compression unit for injecting compressed inert gas into the liquid cooling pipe (1); a control unit, the vacuum pump and the plurality of control valves (2) being electrically connected to the control unit, the control unit being used for controlling start or stop of the vacuum pump and adjusting opening degrees of the control valves (2).

2. The quick liquid injection and discharge device of the liquid cooling system according to claim 1, wherein, The control unit comprises a controller, a first drive circuit and a plurality of second drive circuits, the controlled ends of the first drive circuit and the plurality of second drive circuits being electrically connected to IO ports of the controller; a drive output end of the first drive circuit is electrically connected to a drive signal input end of the vacuum pump, and drive output ends of the second drive circuits are electrically connected to drive signal input ends of the corresponding control valves (2).

3. The quick liquid injection and drainage device of the liquid cooling system according to claim 2, characterized in that, The control unit further comprises a power module for providing working power for the controller, the first drive circuit, the plurality of second drive circuits and the plurality of control valves (2).

4. The quick liquid injection and discharge device of the liquid cooling system according to claim 2, wherein, Each of the control valves (2) is an electromagnetic valve.

5. The quick liquid injection and drainage device of the liquid cooling system according to claim 2, wherein, The control unit further comprises a plurality of pressure sensors, the plurality of pressure sensors being electrically connected to the IO ports of the controller, the pressure sensors also being arranged at the preset positions of the liquid cooling pipe (1) for monitoring pressure values at the preset positions of the liquid cooling pipe (1) in real time.

6. The liquid cooling system's quick liquid injection and drainage device according to claim 1 or 5, characterized in that, The preset positions of the liquid cooling pipe (1) at least comprise a liquid discharge pipe section position of the liquid cooling pipe (1), a liquid inlet pipe section position of the liquid cooling pipe (1) and a bent pipe section position of the liquid cooling pipe (1).

7. The quick liquid injection and discharge device of the liquid cooling system according to claim 1, wherein, The liquid cooling system further comprises a base (3), one side of the base (3) being provided with a box body (4), the liquid inlet port (5) and the liquid discharge port (6) of the liquid cooling pipe (1) being arranged on the box body (4), and the liquid cooling pipe (1) being installed on the base (3).

8. The liquid cooling system's quick liquid injection and drainage device according to claim 7, characterized in that, The liquid cooling pipe (1) comprises a main pipe and a plurality of branch pipes connected to the main pipe.

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