CN117270659A - Liquid filling and draining device - Google Patents

Abstract

The embodiment of the application provides a liquid injection and drainage device. The liquid filling and draining device comprises a first container, a second container and a connecting pipeline, wherein the first container and the second container are respectively connected with the connecting pipeline, two ends of the connecting pipeline are respectively provided with a water inlet joint and a water outlet joint, and the liquid filling and draining device comprises a liquid storage state, a liquid supplementing state and an online liquid changing state; when the liquid filling and draining device is in an online liquid changing state, the water outlet joint and the water inlet joint are respectively connected with the liquid to-be-replenished device, liquid in the second container enters the liquid to-be-replenished device through the connecting pipeline, and the liquid in the liquid to-be-replenished device enters the first container through the connecting pipeline so as to realize the replacement of the liquid in the liquid to-be-replenished device. According to the liquid injection and drainage device, on-line liquid exchange of the liquid injection and drainage device to the liquid supplementing device can be realized on the premise that the liquid supplementing device is not stopped.

Description

Liquid filling and draining device

Technical Field

The application relates to the technical field of cooling, in particular to a liquid injection and drainage device.

Background

In recent years, technologies such as big data, cloud computing, artificial intelligence and the like are rapidly developed, and IT heat dissipation density is rapidly increased; the cold plate liquid cooling technology is rapidly developed because the high heat flow heat dissipation density can be solved and the system is efficient and energy-saving.

Before the cold plate liquid cooling server is put on shelf, the cold plate liquid cooling system needs to be filled with liquid, a currently commonly adopted mode is to configure secondary side solution in a water bucket, and the liquid in the cold plate liquid cooling system is replenished through carrying the water bucket by operation and maintenance personnel, so that the operation process is time-consuming and labor-consuming. The secondary side solution is used for a long cycle period, and the water quality index such as conductivity, turbidity, microorganisms and the like of the secondary side solution can be continuously deteriorated, so that the risk of blocking a server cold plate exists, the system solution needs to be replaced to avoid the problem, the operation of a liquid cooling system is stopped conventionally, a new solution is replenished after the substandard solution in the system is discharged, and the operation of on-line service can be seriously influenced. Because the traditional liquid supplementing and replacing mode has the defects of time and labor waste and influence on-line service operation, innovation of the liquid supplementing and replacing mode of the liquid cooling system is needed.

Disclosure of Invention

The application provides a annotate flowing back device, can be under the prerequisite of waiting to mend liquid device non-stop, realize annotating flowing back device and wait to mend online liquid of liquid device.

The application is realized by the following technical scheme:

in a first aspect, an embodiment of the present application provides an injection and drainage device, where the injection and drainage device includes a first container, a second container, and a connection pipe, the first container and the second container are connected with the connection pipe, two ends of the connection pipe are respectively provided with a water inlet joint and a water outlet joint, and the injection and drainage device includes a liquid storage state, a liquid supplementing state, and an online liquid changing state; when the liquid filling and draining device is in a liquid storage state, the water inlet connector is connected with the liquid storage source, and the water outlet connector is closed, so that liquid provided by the liquid storage source enters the first container and/or the second container through the connecting pipeline; when the liquid filling and draining device is in a liquid supplementing state, the water outlet joint is connected with the liquid supplementing device to be supplemented, and liquid in the first container and/or liquid in the second container enter the liquid supplementing device to be supplemented through the connecting pipeline; when the liquid filling and draining device is in an online liquid changing state, the water outlet joint and the water inlet joint are respectively connected with the liquid to-be-replenished device, liquid in the second container enters the liquid to-be-replenished device through the connecting pipeline, and the liquid in the liquid to-be-replenished device enters the first container through the connecting pipeline so as to realize the replacement of the liquid in the liquid to-be-replenished device.

According to the liquid injection and drainage device, which is disclosed by the embodiment of the application, the liquid injection and drainage device is provided with a liquid storage state, a liquid supplementing state and an online liquid changing state, the degree of automation is high, and the quick change of liquid (namely secondary side solution) can be realized; especially when being in online liquid change state, the second container provides liquid, and the first container collects the waste liquid, need not waiting to wait for the device of liquid to close in the operation, can wait to mend liquid device operation in-process and trade liquid, to waiting to mend liquid device in the operation more friendly, does not influence its steady operation, but online maintenance.

According to some embodiments of the present application, the first container includes a first interface and a second interface, the second container includes a third interface and a fourth interface, the connection pipeline includes a main pipeline, a first branch pipeline, a second branch pipeline, a third branch pipeline and a fourth branch pipeline, one end of the main pipeline is provided with a water inlet joint, the other end of the main pipeline is provided with a water outlet joint, the first interface is connected with the main pipeline through the first branch pipeline, the second interface is connected with the main pipeline through the second branch pipeline, the third interface is connected with the main pipeline through the third branch pipeline, and the fourth interface is connected with the main pipeline through the fourth branch pipeline; when in a liquid storage state, the liquid is conveyed to the first container through the main pipeline and the second branch pipeline, and/or the liquid is conveyed to the second container through the main pipeline and the fourth branch pipeline; when the liquid supplementing state is in the liquid supplementing state, liquid is supplemented to the liquid supplementing device to be supplemented through the first container, the first branch pipeline and the main pipeline, and/or liquid is supplemented to the liquid supplementing device to be supplemented through the second container, the third branch pipeline and the main pipeline; when the liquid is in an online liquid exchange state, liquid is replenished to the liquid replenishing device through the second container and the main pipeline, and liquid discharged by the liquid replenishing device is collected through the main pipeline and the first container.

In the scheme, the first container is connected with the main pipeline through the first branch pipeline and the second branch pipeline so as to realize the communication between the first container and the main pipeline through different pipelines; the second container is connected with the main pipeline through a third branch pipeline and a fourth branch pipeline so as to realize the communication between the second container and the main pipeline through different pipelines; when the liquid filling and draining device is in different states, different branch pipelines are in connected or disconnected states, so that corresponding liquid storage operation, liquid supplementing operation or liquid changing operation is realized, and the operation is flexible.

According to some embodiments of the present application, the main pipe is provided with a first valve, a second valve and a third valve in sequence along the direction of the water inlet joint pointing to the water outlet joint, the first branch pipe is arranged between the first valve and the second valve, the second branch pipe, the third branch pipe and the fourth branch pipe are arranged between the second valve and the third valve, the first branch pipe is provided with the fourth valve, the third branch pipe is provided with the fifth valve, the second branch pipe is provided with the sixth valve, and the fourth branch pipe is provided with the seventh valve; when in a liquid storage state, the first valve, the second valve, the seventh valve and/or the sixth valve are/is opened, and the third valve, the fourth valve and the fifth valve are/is closed so as to deliver liquid to the second container and/or the first container; when in the fluid-filling state, the second valve, the third valve, the fourth valve and/or the fifth valve are/is opened, and the first valve, the sixth valve and the seventh valve are/is closed so as to fill the fluid to the device to be filled with the fluid through the first container and/or the second container; when the liquid is in an online liquid exchange state, the first valve, the third valve, the fourth valve and the fifth valve are opened, the second valve, the sixth valve and the seventh valve are closed, so that liquid is replenished to the liquid replenishing device through the second container, and liquid discharged by the liquid replenishing device is collected through the first container.

In the above scheme, the first valve, the second valve and the third valve are respectively arranged on the main pipeline to control the connection or disconnection of different areas of the main pipeline so as to realize the flow of liquid between the main pipeline and the first container or the second container; the fourth valve is used for controlling the connection or disconnection of the first branch pipeline so as to facilitate the flow of liquid between the first container and the main pipeline; the fifth valve is used for controlling the connection or disconnection of the third branch pipeline so as to facilitate the flow of liquid between the second container and the second container; the sixth valve is used for controlling the connection or disconnection of the second branch pipeline so as to facilitate the flow of liquid between the main pipeline and the first container; the seventh valve is used for controlling the connection or disconnection of the fourth branch pipeline so as to facilitate the liquid to flow between the main pipeline and the second container; and the connection or disconnection of different pipelines is controlled through different valves so as to realize different operations, and the operation is simple.

According to some embodiments of the present application, the liquid filling and draining device further comprises a first detection component, a second detection component and a control system, wherein the first detection component is used for detecting the liquid level and the electric conductivity of the liquid in the first container, the second detection component is used for detecting the liquid level and the electric conductivity of the liquid in the second container, and the control system is electrically connected with the first detection component, the second detection component, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve and the seventh valve; the control system is used for controlling the opening or closing of the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve and the seventh valve according to the detection signals of the first detection assembly and the second detection assembly.

In the above scheme, the first detection component is used for detecting the liquid level and the conductivity of the liquid in the first container so as to monitor the condition of the liquid in the first container, and the control system is convenient for controlling the corresponding valve to work so as to realize that the liquid enters the first container or the liquid in the first container flows out of the first container; the second detection component is used for detecting the liquid level and the electric conductivity of the liquid in the second container so as to monitor the condition of the liquid in the second container, and the control system is convenient for controlling the corresponding valve to work so as to realize that the liquid enters the second container or the liquid in the second container flows out of the second container.

According to some embodiments of the present application, the first detection assembly comprises a first liquid level sensor and a first conductivity sensor, and the second detection assembly comprises a second liquid level sensor and a second conductivity sensor.

In the above scheme, the first liquid level sensor is used for detecting the liquid level of the liquid in the first container, and the first conductivity sensor is used for detecting the conductivity of the liquid in the first container; the second liquid level sensor is used for detecting the liquid level of the liquid in the second container, and the second conductivity sensor is used for detecting the conductivity of the liquid in the second container.

According to some embodiments of the present application, the first container is provided with a first drain valve, the second container is provided with a second drain valve, and the control system is electrically connected to the first drain valve and the second drain valve; the control system is used for controlling the first liquid discharge valve to discharge the liquid in the first container when the conductivity of the liquid in the first container detected by the first detection component is greater than a preset threshold value; the control system is used for controlling the second liquid discharge valve to discharge the liquid in the second container when the conductivity of the liquid in the second container detected by the second detection component is greater than a preset threshold value.

In the above aspect, when the first drain valve is opened, the liquid in the first container may be drained via the first drain valve; when the second liquid discharge valve is opened, the liquid in the second container can be discharged through the second liquid discharge valve; the control system can control the first liquid discharge valve to discharge the liquid in the first container according to the condition that the conductivity of the liquid in the first container detected by the first detection component is larger than a preset threshold value, and can control the second liquid discharge valve to discharge the liquid in the second container according to the condition that the conductivity of the liquid in the second container detected by the second detection component is larger than the preset threshold value, so that the control precision is high.

According to some embodiments of the application, the main pipe is further provided with a fluid infusion pump and a check valve, the fluid infusion pump is arranged between the second valve and the third valve, the fluid inlet end of the fluid infusion pump is close to the second valve, the fluid outlet end of the fluid infusion pump is close to the third valve, the check valve is arranged at the fluid outlet end of the fluid infusion pump, and the third branch pipe is arranged between the second valve and the fluid infusion pump.

In the scheme, the liquid supplementing pump can improve the conveying pressure of the liquid and improve the conveying efficiency of the liquid; the check valve is arranged at the liquid outlet end of the liquid supplementing pump so as to control the flowing direction of liquid in the main pipeline and avoid the liquid from flowing back to the liquid supplementing pump; the third branch pipeline is arranged between the second valve and the liquid supplementing pump, and the liquid flowing out of the second container can be controlled to be conveyed to the liquid supplementing device to be supplemented through the liquid supplementing pump by closing the second valve.

According to some embodiments of the present application, the liquid filling and draining device further comprises a first pressure sensor and a second pressure sensor, wherein the first pressure sensor and the second pressure sensor are respectively arranged on two sides of the main pipeline, which are located on the fluid filling pump.

In the above solution, the first pressure sensor is used for detecting the pressure of the liquid entering the liquid filling pump, and the second pressure sensor is used for detecting the pressure of the liquid delivered by the liquid filling pump so as to control the pressure of the liquid delivered towards the liquid filling device.

According to some embodiments of the present application, the liquid filling and draining device further comprises a filter, the filter is disposed at a liquid outlet end of the liquid filling pump, and the filter is used for filtering liquid output by the liquid filling pump.

In the scheme, the filter is arranged at the liquid outlet end of the liquid supplementing pump, can filter liquid output by the liquid supplementing pump, and prevents fine impurities in the liquid from entering the liquid supplementing device to be supplemented.

According to some embodiments of the present application, the first container is provided with a first breather valve and the second container is provided with a second breather valve.

In the scheme, the first breather valve realizes that the first container is connected with the outside, when the first container is filled with liquid, the first breather valve exhausts air, when the first container is discharged, the first breather valve is filled with air, and dust is prevented from entering the first container; the second breather valve realizes that the second container links to each other with the external world, and when the second container inlet liquid, the second breather valve exhaust, and when the second container goes out liquid, the second breather valve inlet gas to avoid the dust to get into the second container.

According to some embodiments of the present application, the liquid filling and draining device further comprises an automatic guiding vehicle, and the first container, the second container and the connecting pipeline are all arranged on the automatic guiding vehicle.

In the scheme, the automatic guide vehicle can realize automatic cruising, the degree of automation is high, and the working efficiency is improved.

According to some embodiments of the present application, the device to be replenished is a cold plate liquid cooling system of a data center.

In the scheme, the liquid injection and drainage device can provide secondary side solution for a cold plate liquid cooling system of the data center so as to meet cooling requirements.

According to some embodiments of the present application, the cold plate liquid cooling system includes a cooling liquid distribution unit including a heat exchanger, a circulating water pump, a liquid supplementing port, and a liquid draining port.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a liquid injection and drainage device according to some embodiments of the present application;

FIG. 2 is a schematic diagram of a liquid filling and draining device in a liquid storage state according to some embodiments of the present disclosure;

FIG. 3 is a schematic diagram of a liquid filling and draining device in a liquid supplementing state according to some embodiments of the present disclosure;

FIG. 4 is a schematic diagram of an on-line liquid change state of a liquid injection and drainage device according to some embodiments of the present disclosure;

FIG. 5 is a schematic diagram of a cooling fluid distribution unit according to some embodiments of the present disclosure;

fig. 6 is a schematic structural diagram of an automatic guided vehicle according to some embodiments of the present application.

Icon: 100-liquid injection and drainage device; 10-a first container; 11-a first interface; 12-a second interface; 13-a first breather valve; 20-a second container; 21-a third interface; 22-fourth interface; 23-a second breather valve; 30-connecting a pipeline; 31-a main pipeline; 311-water inlet joint; 312-water outlet joint; 32-a first branch pipe; 33-a second branch conduit; 34-a third branch conduit; 35-a fourth branch pipe; 36-a fifth branch pipe; 37-sixth branch pipe; 41-a first valve; 42-a second valve; 43-a third valve; 44-a fourth valve; 45-fifth valve; 46-sixth valve; 47-seventh valve; 48-a first drain valve; 49-a second drain valve; 50-a control system; 61-a first level sensor; 62-a first conductivity sensor; 63-a second level sensor; 64-a second conductivity sensor; 71-a fluid infusion pump; 72-check valve; 73-a first pressure sensor; 74-a second pressure sensor; 75-a filter; 80-an automatic guided vehicle; 91-a reservoir; 92-a device to be replenished with liquid; 921-heat exchanger; 922-a circulating water pump; 923-fluid infusion port; 924-liquid discharge port.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

The term "plurality" as used herein refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

The structure of the liquid filling and draining device provided in the embodiment of the present application is described below with reference to the accompanying drawings.

Referring to fig. 1 to fig. 4, fig. 1 is a schematic structural diagram of a liquid filling and draining device provided in some embodiments of the present application, fig. 2 is a schematic diagram of a liquid filling and draining device provided in some embodiments of the present application in a liquid storage state, fig. 3 is a schematic diagram of a liquid filling and draining device provided in some embodiments of the present application in a liquid supplementing state, and fig. 4 is a schematic diagram of a liquid filling and draining device provided in some embodiments of the present application in an online liquid changing state. The embodiment of the application provides a liquid filling and draining device 100, the liquid filling and draining device 100 comprises a first container 10, a second container 20 and a connecting pipeline 30, the first container 10 and the second container 20 are respectively connected with the connecting pipeline 30, two ends of the connecting pipeline 30 are respectively provided with a water inlet joint 311 and a water outlet joint 312, and the liquid filling and draining device 100 comprises a liquid storage state, a liquid supplementing state and an online liquid changing state; when the liquid filling and draining device 100 is in a liquid storage state, the water inlet joint 311 is connected with the liquid storage source 91, and the water outlet joint 312 is closed, so that liquid provided by the liquid storage source 91 enters the first container 10 and/or the second container 20 through the connecting pipeline 30; when the liquid filling and draining device 100 is in the liquid supplementing state, the water outlet joint 312 is connected with the to-be-supplemented device 92, and the liquid in the first container 10 and/or the liquid in the second container 20 enters the to-be-supplemented device 92 through the connecting pipeline 30; when the liquid filling and draining device 100 is in the online liquid changing state, the water outlet joint 312 and the water inlet joint 311 are respectively connected with the to-be-replenished device 92, the liquid in the second container 20 enters the to-be-replenished device 92 through the connecting pipeline 30, and the liquid in the to-be-replenished device 92 enters the first container 10 through the connecting pipeline 30, so as to realize the replacement of the liquid in the to-be-replenished device 92.

The first container 10 and the second container 20 are containers for containing a liquid, and the first container 10 and the second container 20 are independent from each other.

The first container 10 is connected to the connecting pipe 30 so as to enable liquid to enter the first container 10 or to flow out of the first container 10 through the connecting pipe 30; the second container 20 is connected to the connecting duct 30 so as to enable liquid to enter the second container 20 or to exit from the second container 20 through the connecting duct 30.

The liquid provided by the liquid injection and drainage device can be secondary side solution of the cooling system.

The to-be-replenished liquid device 92 of the embodiment of the application can be a cold plate liquid cooling system of a data center.

The cold plate liquid cooling can be a cooling implementation mode that a cold plate assembly is adopted to be in contact with a high heat flux density assembly, the heating value is led out through a cooling medium in the cold plate assembly, and heat of equipment is finally emitted to the external environment or recycled through heat exchange transfer of one or more cooling loops.

The cold plate liquid cooling secondary side cooling circuit may be a cold energy distribution system for guiding out the heat generation amount of the high heat flux density element of the electronic information device and performing heat exchange with the primary side cooling circuit.

The cooling liquid distribution unit can be used for realizing driving and heat exchange of a secondary side cooling loop of the liquid cooling system and can comprise a circulating water pump, a heat exchanger, a control system and the like.

The liquid reservoir 91 is capable of providing a liquid, and when the water inlet connection 311 is connected to the liquid reservoir 91, the liquid of the liquid reservoir 91 is capable of entering the connection conduit 30 via the water inlet connection 311 and into the first container 10 and/or the second container 20.

When the liquid filling and draining device 100 is in the liquid filling and draining state, the water outlet joint 312 is connected with the to-be-filled device 92, and the liquid in the first container 10 enters the to-be-filled device 92 from the water outlet joint 312 via the connecting pipeline 30, and/or the liquid in the second container 20 enters the to-be-filled device 92 from the water outlet joint 312 via the connecting pipeline 30.

When the liquid filling and draining device 100 is in an online liquid changing state, the water outlet joint 312 is connected with the liquid filling port of the liquid filling device 92, the water inlet joint 311 is connected with the liquid draining port of the liquid filling device 92, before the liquid is changed, the liquid in the first container 10 is emptied, the liquid in the second container 20 enters the liquid filling device 92 from the water outlet joint 312 via the connecting pipeline 30, and the liquid (namely, waste liquid) in the liquid filling device 92 enters the connecting pipeline 30 from the water inlet joint 311 and is conveyed into the first container 10. In the liquid changing process, the liquid to be replenished device 92 can replenish liquid and drain liquid simultaneously, so that online liquid changing is realized, shutdown operation is avoided, and liquid changing efficiency is improved.

According to the liquid injection and drainage device 100 disclosed by the embodiment of the application, the liquid injection and drainage device has a liquid storage state, a liquid supplementing state and an online liquid changing state, is high in automation degree, and can realize rapid replacement of liquid (namely secondary side solution); especially in the on-line liquid changing state, the second container 20 provides liquid, the first container 10 collects waste liquid, the device 92 to be replenished in operation is not required to be closed, liquid can be changed in the operation process of the device 92 to be replenished, the device 92 to be replenished in operation is more friendly, stable operation is not influenced, and on-line maintenance can be realized. When being applied to cold plate liquid cooling system, can carry out automatic fluid infusion and online liquid change to cold plate liquid cooling system, this annotate flowing back device 100 integrated level and degree of automation is high for cold plate liquid cooling system's water yield and quality of water are higher, satisfy data center's server and to the requirement of secondary side solution.

Referring to fig. 1 to 4, according to some embodiments of the present application, a first container 10 includes a first port 11 and a second port 12, a second container 20 includes a third port 21 and a fourth port 22, a connection pipe 30 includes a main pipe 31, a first branch pipe 32, a second branch pipe 33, a third branch pipe 34 and a fourth branch pipe 35, one end of the main pipe 31 is provided with a water inlet joint 311, the other end of the main pipe 31 is provided with a water outlet joint 312, the first port 11 is connected with the main pipe 31 through the first branch pipe 32, the second port 12 is connected with the main pipe 31 through the second branch pipe 33, the third port 21 is connected with the main pipe 31 through the third branch pipe 34, and the fourth port 22 is connected with the main pipe 31 through the fourth branch pipe 35; when in the liquid storage state, liquid is delivered to the first container 10 through the main pipe 31, the second branch pipe 33, and/or liquid is delivered to the second container 20 through the main pipe 31 and the fourth branch pipe 35; when in the fluid infusion state, fluid infusion is conducted to the device to be fluid infusion 92 through the first container 10, the first branch pipeline 32 and the main pipeline 31, and/or fluid infusion is conducted to the device to be fluid infusion 92 through the second container 20, the third branch pipeline 34 and the main pipeline 31; when the liquid is in the on-line liquid exchange state, the liquid is replenished to the liquid to-be-replenished device 92 through the second container 20 and the main pipe 31, and the liquid discharged from the liquid to-be-replenished device 92 is collected through the main pipe 31 and the first container 10.

In the present application, the water inlet connector 311 and the water outlet connector 312 may be quick-change connectors so as to improve assembly efficiency.

The first interface 11 and the second interface 12 may be located on the same side of the first container 10, or may be located on opposite sides of the first container 10, for example, the first interface 11 may be disposed below the first container 10, and the second interface 12 may be disposed above the first container 10. The first port 11 and the second port 12 are each in communication with the interior of the first container 10.

The third interface 21 and the fourth interface 22 may be located on the same side of the second container 20, or may be located on opposite sides of the second container 20, for example, the third interface 21 may be disposed below the second container 20, and the fourth interface 22 may be disposed above the second container 20. The third port 21 and the fourth port 22 are each in communication with the interior of the second container 20.

When the liquid filling and draining device 100 is in the liquid storage state, the liquid supplied from the liquid storage source 91 can be transferred from the second port 12 to the first container 10 via the main pipe 31 and the second branch pipe 33, and/or can be transferred from the fourth port 22 to the second container 20 via the main pipe 31 and the fourth branch pipe 35.

When the liquid filling and draining device 100 is in the liquid filling and draining state, the liquid in the first container 10 is filled from the first interface 11 to the to-be-filled device 92 via the first branch pipe 32 and the main pipe 31, and/or the liquid in the second container 20 is filled from the third interface 21 to the to-be-filled device 92 via the third branch pipe 34 and the main pipe 31.

When the liquid filling and draining device 100 is in an online liquid changing state, the liquid in the second container 20 enters the third branch pipeline 34 from the third interface 21, then the liquid is conveyed to the liquid to be replenished device 92 via the main pipeline 31, and the waste liquid (the liquid which does not reach the standard) in the liquid to be replenished device 92 enters the main pipeline 31 from the water inlet joint 311, and then enters the first container 10 from the first interface 11 via the first branch pipeline 32.

In the above-described aspect, the first container 10 is connected to the main pipe 31 through the first branch pipe 32 and the second branch pipe 33 so that communication of the first container 10 with the main pipe 31 is achieved through different pipes; the second container 20 is connected to the main pipe 31 through a third branch pipe 34 and a fourth branch pipe 35 so as to communicate the second container 20 with the main pipe 31 through different pipes; when the liquid filling and draining device 100 is in different states, different branch pipelines are in connected or disconnected states, so that corresponding liquid storage operation, liquid supplementing operation or liquid changing operation is realized, and the operation is flexible.

Referring to fig. 1 to 4, according to some embodiments of the present application, the main pipe 31 is sequentially provided with a first valve 41, a second valve 42 and a third valve 43 along a direction in which the water inlet joint 311 points to the water outlet joint 312, the first branch pipe 32 is disposed between the first valve 41 and the second valve 42, the second branch pipe 33, the third branch pipe 34 and the fourth branch pipe 35 are disposed between the second valve 42 and the third valve 43, the first branch pipe 32 is provided with a fourth valve 44, the third branch pipe 34 is provided with a fifth valve 45, the second branch pipe 33 is provided with a sixth valve 46, and the fourth branch pipe 35 is provided with a seventh valve 47; when in the liquid storage state, the first, second, seventh and/or sixth valves 41, 42, 47, 46 are opened, and the third, fourth and fifth valves 43, 44, 45 are closed to deliver liquid to the second and/or first containers 20, 10; when in the fluid-filled state, the second, third, fourth and/or fifth valves 42, 43, 44, 45 are opened, and the first, sixth and seventh valves 41, 46, 47 are closed to fill the device 92 to be filled with fluid through the first and/or second containers 10, 20; when the liquid is in the on-line liquid change state, the first valve 41, the third valve 43, the fourth valve 44 and the fifth valve 45 are opened, the second valve 42, the sixth valve 46 and the seventh valve 47 are closed, so that liquid is replenished to the liquid to be replenished device 92 through the second container 20, and liquid discharged from the liquid to be replenished device 92 is collected through the first container 10.

The first valve 41, the second valve 42 and the third valve 43 are arranged in sequence, the first valve 41 is close to the water inlet joint 311, and the third valve 43 is close to the water outlet joint 312.

The first branch pipe 32 is arranged between the first valve 41 and the second valve 42, and when the first valve 41 is opened and the second valve 42 is closed, the liquid in the main pipe 31 can enter the first container 10 through the first branch pipe 32; when the first valve 41 is closed and the second valve 42 is opened, liquid in the first container 10 may enter the main pipe 31 via the first branch pipe 32 and flow toward the outlet joint 312.

When the first and second valves 41, 42 are opened and the third valve 43 is closed, liquid provided by the liquid reservoir 91 may enter the first container 10 via the main pipe 31 and the second branch pipe 33 and/or enter the second container 20 via the main pipe 31 and the fourth branch pipe 35. When the first and second valves 41, 42 are closed and the third valve 43 is opened, the liquid in the second container 20 can enter the to-be-replenished device 92 from the outlet port via the third branch conduit 34 and the main conduit 31.

For example, when the liquid filling and draining device 100 is in the liquid storage state, the first, second and seventh valves 41, 42 and 47 are opened, and the third, fourth and fifth valves 43, 44 and 45 are closed to deliver the liquid to the second container 20 through the main pipe 31 and the fourth branch pipe 35; and/or the first, second and sixth valves 41, 42 and 46 are opened and the third, fourth and fifth valves 43, 44 and 45 are closed to deliver liquid to the first container 10 through the main pipe 31 and the second branch pipe 33.

When the liquid filling and draining device 100 is in the liquid supplementing state, the second valve 42, the third valve 43 and the fourth valve 44 are opened, and the first valve 41, the sixth valve 46 and the seventh valve 47 are closed, so that the liquid in the first container 10 can be conveniently conveyed to the device 92 to be supplemented with liquid through the first branch pipeline 32 and the main pipeline 31; and/or the second valve 42, the third valve 43 and the fifth valve 45 are opened, and the first valve 41, the sixth valve 46 and the seventh valve 47 are closed, so that the liquid in the second container 20 is conveyed to the device 92 to be replenished with liquid via the third branch pipe 34 and the main pipe 31.

When the liquid filling and draining device 100 is in the online liquid change state, the first valve 41, the third valve 43, the fourth valve 44 and the fifth valve 45 are opened, and the second valve 42, the sixth valve 46 and the seventh valve 47 are closed, so that the liquid in the second container 20 is conveniently filled into the liquid to be filled device 92 through the third branch pipe 34 and the main pipe 31, and the waste liquid of the liquid to be filled device 92 is conveyed to the first container 10 through the main pipe 31 and the first branch pipe 32.

In the above-described aspects, the first valve 41, the second valve 42, and the third valve 43 are respectively provided to the main pipe 31 to control the connection or disconnection of different areas of the main pipe 31 to achieve the flow of the liquid between the main pipe 31 and the first container 10 or the second container 20; the fourth valve 44 is used to control the connection or disconnection of the first branch pipe 32 so as to facilitate the flow of liquid between the first container 10 and the main pipe 31; a fifth valve 45 for controlling the connection or disconnection of the third branch conduit 34 to facilitate the flow of liquid between the second container 20 and the second container 20; the sixth valve 46 is used to control the connection or disconnection of the second branch pipe 33 so as to facilitate the flow of liquid between the main pipe 31 and the first container 10; the seventh valve 47 is used to control the connection or disconnection of the fourth branch pipe 35 so that the liquid flows between the main pipe 31 and the second tank 20; and the connection or disconnection of different pipelines is controlled through different valves so as to realize different operations, and the operation is simple.

Referring to fig. 1 to 4, according to some embodiments of the present application, the liquid filling and draining device 100 further includes a first detecting component for detecting the liquid level and the electric conductivity of the liquid in the first container 10, a second detecting component for detecting the liquid level and the electric conductivity of the liquid in the second container 20, and a control system 50 electrically connected to the first detecting component, the second detecting component, the first valve 41, the second valve 42, the third valve 43, the fourth valve 44, the fifth valve 45, the sixth valve 46, and the seventh valve 47; the control system 50 is configured to control opening or closing of the first valve 41, the second valve 42, the third valve 43, the fourth valve 44, the fifth valve 45, the sixth valve 46, and the seventh valve 47 according to detection signals of the first detection component and the second detection component.

When the first container 10 stores liquid, the first detection unit detects the liquid level of the liquid in the first container 10, and controls the amount of the liquid supplied to the first container 10, so that the liquid in the first container 10 can be prevented from exceeding the preset high liquid level. For example, when the level of the liquid in the first container 10 reaches a preset high level, the control system 50 controls the corresponding valve to close to stop the liquid storage.

When the second container 20 stores liquid, the second detecting unit detects the liquid level of the liquid in the second container 20, and controls the amount of the liquid supplied to the second container 20, so that the liquid in the second container 20 can be prevented from exceeding the preset high liquid level. For example, when the level of the liquid in the second container 20 reaches a preset high level, the control system 50 controls the corresponding valve to close to stop the liquid storage.

When the first container 10 supplements the liquid to the to-be-supplemented device 92, the first detection component detects the liquid level of the liquid in the first container 10, and controls the amount of the liquid discharged by the first container 10, so that the liquid in the first container 10 can be prevented from being lower than the preset low liquid level. For example, when the level of the liquid in the first container 10 reaches a preset low level, the control system 50 controls the corresponding valve to close to stop draining.

When the second container 20 supplements the liquid to the to-be-supplemented device 92, the second detection assembly detects the liquid level of the liquid in the second container 20, and controls the amount of the liquid discharged from the second container 20, so that the liquid in the second container 20 can be prevented from being lower than the preset low liquid level. For example, when the level of the liquid in the second container 20 reaches a preset low level, the control system 50 controls the corresponding valve to close to stop draining.

The first detection means detects the electrical conductivity of the liquid in the first container 10, and when the electrical conductivity is greater than 1000 mus/cm, it is necessary to drain the liquid in the first container 10. The second detection means detects the electrical conductivity of the liquid in the second container 20, and when the electrical conductivity is greater than 1000 mus/cm, it is necessary to drain the liquid in the second container 20.

The control system 50 includes a PLC (Programmable Logic Controller ) controller, HMI (Human Machine Interface, man-machine interface) display screen, and the like.

In the above solution, the first detecting component is configured to detect the level and conductivity of the liquid in the first container 10, so as to monitor the condition of the liquid in the first container 10, and facilitate the control system 50 to control the corresponding valve to operate, so as to implement the supplement of the liquid into the first container 10, or the liquid in the first container 10 flows out of the first container 10; the second detection assembly is used to detect the level and conductivity of the liquid in the second container 20 in order to monitor the condition of the liquid in the second container 20, to control the operation of the corresponding valve by the control system 50 in order to achieve either the replenishment of the liquid into the second container 20 or the outflow of the liquid in the second container 20 out of the second container 20.

In the present application, the first, second, third, fourth, fifth, sixth, and seventh valves 41, 42, 43, 44, 45, 46, and 47 may be solenoid valves.

Referring to fig. 1-4, according to some embodiments of the present application, a first detection assembly includes a first liquid level sensor 61 and a first conductivity sensor 62, and a second detection assembly includes a second liquid level sensor 63 and a second conductivity sensor 64.

The first and second liquid level sensors 61, 63 may be, but are not limited to, a float-ball liquid level transmitter, an ultrasonic liquid level transmitter, a radar liquid level transmitter.

In the above-described aspect, the first liquid level sensor 61 is configured to detect the liquid level of the liquid in the first container 10, and the first conductivity sensor 62 is configured to detect the conductivity of the liquid in the first container 10; the second level sensor 63 is for detecting the level of the liquid in the second container 20, and the second conductivity sensor 64 is for detecting the conductivity of the liquid in the second container 20.

Referring to fig. 1-4, according to some embodiments of the present application, a first container 10 is provided with a first drain valve 48, a second container 20 is provided with a second drain valve 49, and a control system 50 is electrically connected to the first drain valve 48 and the second drain valve 49; the control system 50 is configured to control the first drain valve 48 to drain the liquid in the first container 10 when the conductivity of the liquid in the first container 10 detected by the first detection component is greater than a preset threshold; the control system 50 is configured to control the second drain valve 49 to drain the liquid in the second container 20 when the conductivity of the liquid in the second container 20 detected by the second detection component is greater than a preset threshold.

The first drain valve 48 is used for draining the liquid in the first container 10, the first container 10 is provided with a fifth branch pipe 36, the fifth branch pipe 36 is communicated with the interior of the first container 10, and the first drain valve 48 is arranged on the fifth branch pipe 36.

The second drain valve 49 is for draining the liquid in the second container 20, the second container 20 is provided with a sixth branch pipe 37, the sixth branch pipe 37 is communicated with the inside of the second container 20, and the second drain valve 49 is provided on the sixth branch pipe 37.

In the above-described aspect, when the first drain valve 48 is opened, the liquid in the first container 10 may be drained via the first drain valve 48; when the second drain valve 49 is opened, the liquid in the second container 20 can be drained through the second drain valve 49; the control system 50 can control the first liquid discharge valve 48 to discharge the liquid in the first container 10 according to the fact that the conductivity of the liquid in the first container 10 detected by the first detection component is greater than the preset threshold, and the control system 50 can control the second liquid discharge valve 49 to discharge the liquid in the second container 20 according to the fact that the conductivity of the liquid in the second container 20 detected by the second detection component is greater than the preset threshold, so that control accuracy is high.

Referring to fig. 1 to 4, according to some embodiments of the present application, the main pipe 31 is further provided with a fluid-filling pump 71 and a check valve 72, the fluid-filling pump 71 is disposed between the second valve 42 and the third valve 43, the fluid-inlet end of the fluid-filling pump 71 is close to the second valve 42, the fluid-outlet end of the fluid-filling pump 71 is close to the third valve 43, the check valve 72 is disposed at the fluid-outlet end of the fluid-filling pump 71, and the third branch pipe 34 is disposed between the second valve 42 and the fluid-filling pump 71.

When the liquid to be replenished 92 is replenished or replaced, the liquid provided by the first container 10 and/or the second container 20 enters the main pipe 31 and is conveyed to the liquid to be replenished 92 via the replenishing pump 71, and the replenishing pump 71 can increase the liquid flowing speed.

The check valve 72 is used to prevent the liquid in the main pipe 31 from flowing back to the fluid replacement pump 71 from the fluid outlet end of the fluid replacement pump 71 to the fluid outlet joint 312 of the main pipe 31.

In the above-described aspect, the liquid replenishment pump 71 can increase the liquid conveyance pressure and improve the liquid conveyance efficiency; the check valve 72 is disposed at the liquid outlet end of the liquid-filling pump 71, so as to control the flow direction of the liquid in the main pipe 31, and avoid the liquid from flowing back to the liquid-filling pump 71; the third branch pipe 34 is provided between the second valve 42 and the liquid replenishment pump 71, and by closing the second valve 42, the liquid flowing out of the second tank 20 can be controlled to be sent to the liquid to be replenished device 92 via the liquid replenishment pump 71.

Referring to fig. 1 to 4, according to some embodiments of the present application, the liquid filling and draining device 100 further includes a first pressure sensor 73 and a second pressure sensor 74, where the first pressure sensor 73 and the second pressure sensor 74 are respectively disposed on two sides of the main pipe 31 located on the liquid filling pump 71.

In the above-described aspect, the first pressure sensor 73 is configured to detect the pressure of the liquid entering the liquid replenishment pump 71, and the second pressure sensor 74 is configured to detect the pressure of the liquid delivered by the liquid replenishment pump 71, so as to control the pressure of the liquid delivered toward the device to be replenished 92.

Referring to fig. 1 to 4, according to some embodiments of the present application, the liquid filling and draining device 100 further includes a filter 75, the filter 75 is disposed at the liquid outlet end of the liquid filling pump 71, and the filter 75 is used for filtering the liquid output by the liquid filling pump 71.

In the above-mentioned scheme, the filter 75 is disposed at the liquid outlet end of the liquid filling pump 71, and is capable of filtering the liquid output by the liquid filling pump 71, so as to prevent fine impurities in the liquid from entering the to-be-filled device 92.

Referring to fig. 1-4, according to some embodiments of the present application, a first container 10 is provided with a first breather valve 13 and a second container 20 is provided with a second breather valve 23.

In the above scheme, the first breather valve 13 realizes that the first container 10 is connected with the outside, when the first container 10 is in liquid feeding, the first breather valve 13 is in air exhaust, when the first container 10 is out of liquid, the first breather valve 13 is in air intake, and dust is prevented from entering the first container 10; the second breather valve 23 realizes that the second container 20 is connected with the outside, and when the second container 20 is in liquid, the second breather valve 23 exhausts, and when the second container 20 is out liquid, the second breather valve 23 is in the air, and avoids the dust entering the second container 20.

In some embodiments, the liquid-to-be-replenished device 92 is a cold-plate liquid cooling system of a data center, and in particular, the liquid-filling and draining device 100 replenishes/replaces secondary side solution of the cold-plate liquid cooling system of the data center. Referring to fig. 5, the cold plate liquid cooling system includes a cooling liquid distribution unit (CDU), the cooling liquid distribution unit includes a heat exchanger 921, a water circulation pump 922, a liquid supplementing port 923 and a liquid draining port 924, the liquid supplementing port 923 is disposed at an inlet of the water circulation pump 922 on a secondary side in the cooling liquid distribution unit, the liquid draining port 924 is disposed between the liquid supplementing port 923 and an external circulation pipeline of the cooling liquid distribution unit, and a distance between the liquid supplementing port 923 and the liquid draining port 924 is greater than a preset distance, for example, the preset distance may be 1 meter. When the liquid filling and draining device 100 is needed to fill/change liquid for the cold plate liquid cooling system, the liquid filling port 923 is in butt joint with the water outlet joint 312, and the liquid draining port 924 is in butt joint with the water inlet joint 311. The positions of the liquid replenishing port 923 and the liquid discharging port 924 can be: 1. the waste liquid discharge proportion of the liquid discharge port 924 is ensured, and the waste of liquid resources is reduced; 2. the liquid outlet 924 is also arranged in the cooling liquid distribution unit, so that the integration level and the universality of the cooling liquid distribution unit can be increased, and the cooling liquid distribution unit can be used in butt joint with any external circulation pipeline without additionally arranging the liquid outlet 924 on the external circulation pipeline.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an automatic guided vehicle according to some embodiments of the present application. According to some embodiments of the present application, the liquid filling and draining device 100 further includes an automatic guiding vehicle 80, and the first container 10, the second container 20 and the connecting pipe 30 are all disposed on the automatic guiding vehicle 80.

In the above scheme, the automatic guiding vehicle 80 can realize automatic cruising, the degree of automation is high, and the working efficiency is improved.

Taking the liquid-supplementing device 92 as a cold plate liquid cooling system for example, after the liquid-injecting and draining device 100 acquires an alarm signal of a cooling liquid distribution unit through a built-in Bluetooth or network, fault judgment is carried out, the device alarms and automatically runs to the position of the fault system, and liquid can be supplemented to the cooling liquid distribution unit through a quick connector; the liquid filling and draining device 100 collects the liquid supplementing data of each cooling liquid distribution unit, can complete the system health assessment, and alarms to operation and maintenance personnel when abnormality occurs.

The PLC controller collects signals from the first pressure sensor 73, the second pressure sensor 74, the first fluid level sensor 61, the second fluid level sensor 63, the first conductivity sensor 62, the second conductivity sensor 64 and the valves and transmits the signals to the HMI display for reference by the operator. The PLC controller can automatically acquire the real-time liquid level of the alarm cooling liquid distribution unit. The operation logic of each valve and the fluid infusion pump 71 in each mode is stored in the PLC controller, when the operator selects a specific mode, each valve and the fluid infusion pump 71 can quickly enter the working mode, and after the alarm cooling liquid distribution unit reaches a high liquid level, the PLC controller automatically closes the liquid injection and drainage device 100.

The automatic guiding vehicle 80 comprises an intelligent chip, a driving motor and a distance sensor, the intelligent chip performs self-position positioning, map creation and path planning after receiving the liquid level warning signal sent by the cooling liquid distribution unit, and starts the driving motor to move the liquid filling and draining device 100, the distance sensor detects the relative distance between the body and surrounding objects in real time, and the position information is transmitted to the intelligent chip in real time, and the liquid filling and draining device 100 finally reaches the position where the liquid filling or liquid changing cooling liquid distribution unit is needed.

While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (13)

1. A liquid injection and drainage device, comprising: the liquid filling and draining device comprises a liquid storage state, a liquid supplementing state and an online liquid changing state;

When the liquid filling and draining device is in the liquid storage state, the water inlet joint is connected with a liquid storage source, and the water outlet joint is closed, so that liquid provided by the liquid storage source enters the first container and/or the second container through the connecting pipeline;

when the liquid filling and draining device is in the liquid supplementing state, the water outlet joint is connected with a liquid supplementing device to be supplemented, and the liquid in the first container and/or the liquid in the second container enters the liquid supplementing device to be supplemented through the connecting pipeline;

when the liquid filling and draining device is in the online liquid changing state, the water outlet joint and the water inlet joint are respectively connected with the liquid filling device to be filled, liquid in the second container enters the liquid filling device to be filled through the connecting pipeline, and liquid in the liquid filling device to be filled enters the first container through the connecting pipeline so as to realize the replacement of the liquid in the liquid filling device to be filled.

2. The liquid filling and draining device according to claim 1, wherein the first container comprises a first interface and a second interface, the second container comprises a third interface and a fourth interface, the connecting pipeline comprises a main pipeline, a first branch pipeline, a second branch pipeline, a third branch pipeline and a fourth branch pipeline, one end of the main pipeline is provided with the water inlet joint, the other end of the main pipeline is provided with the water outlet joint, the first interface is connected with the main pipeline through the first branch pipeline, the second interface is connected with the main pipeline through the second branch pipeline, the third interface is connected with the main pipeline through the third branch pipeline, and the fourth interface is connected with the main pipeline through the fourth branch pipeline;

When in the liquid storage state, liquid is conveyed to the first container through the main pipeline and the second branch pipeline, and/or liquid is conveyed to the second container through the main pipeline and the fourth branch pipeline;

when the liquid supplementing state is in the liquid supplementing state, supplementing liquid to the liquid supplementing device to be supplemented through the first container, the first branch pipeline and the main pipeline, and/or supplementing liquid to the liquid supplementing device to be supplemented through the second container, the third branch pipeline and the main pipeline;

when the liquid is in the online liquid exchange state, liquid is replenished to the liquid to be replenished device through the second container and the main pipeline, and liquid discharged by the liquid to be replenished device is collected through the main pipeline and the first container.

3. The liquid filling and draining device according to claim 2, wherein the main pipe is provided with a first valve, a second valve and a third valve in sequence along the direction of the water inlet joint pointing to the water outlet joint, the first branch pipe is arranged between the first valve and the second valve, the second branch pipe, the third branch pipe and the fourth branch pipe are arranged between the second valve and the third valve, the first branch pipe is provided with a fourth valve, the third branch pipe is provided with a fifth valve, the second branch pipe is provided with a sixth valve, and the fourth branch pipe is provided with a seventh valve;

When in the liquid storage state, the first valve, the second valve, the seventh valve and/or the sixth valve are opened, and the third valve, the fourth valve and the fifth valve are closed to deliver liquid to the second container and/or the first container;

when in the fluid-filled state, the second valve, the third valve, the fourth valve and/or the fifth valve are/is opened, and the first valve, the sixth valve and the seventh valve are/is closed so as to fill the fluid to the device to be filled with fluid through the first container and/or the second container;

when the liquid is in the online liquid exchange state, the first valve, the third valve, the fourth valve and the fifth valve are opened, the second valve, the sixth valve and the seventh valve are closed, so that liquid is replenished to the liquid to be replenished device through the second container, and liquid discharged by the liquid to be replenished device is collected through the first container.

4. The liquid injection and drainage device of claim 3 further comprising a first detection assembly for detecting the level and conductivity of the liquid in the first container, a second detection assembly for detecting the level and conductivity of the liquid in the second container, and a control system electrically connected to the first detection assembly, the second detection assembly, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, and the seventh valve;

The control system is used for controlling the opening or closing of the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve and the seventh valve according to detection signals of the first detection assembly and the second detection assembly.

5. The liquid injection and drainage device of claim 4, wherein the first detection assembly comprises a first liquid level sensor and a first conductivity sensor and the second detection assembly comprises a second liquid level sensor and a second conductivity sensor.

6. The liquid filling and draining device according to claim 4, wherein the first container is provided with a first draining valve, the second container is provided with a second draining valve, and the control system is electrically connected with the first draining valve and the second draining valve;

the control system is used for controlling the first liquid discharge valve to discharge the liquid in the first container when the conductivity of the liquid in the first container detected by the first detection component is greater than a preset threshold value; the control system is used for controlling the second liquid discharge valve to discharge the liquid in the second container when the conductivity of the liquid in the second container detected by the second detection component is larger than a preset threshold value.

7. The liquid filling and draining device according to claim 3, wherein the main pipe is further provided with a liquid filling pump and a check valve, the liquid filling pump is arranged between the second valve and the third valve, a liquid inlet end of the liquid filling pump is close to the second valve, a liquid outlet end of the liquid filling pump is close to the third valve, the check valve is arranged at a liquid outlet end of the liquid filling pump, and the third branch pipe is arranged between the second valve and the liquid filling pump.

8. The liquid filling and draining device according to claim 7, further comprising a first pressure sensor and a second pressure sensor, wherein the first pressure sensor and the second pressure sensor are respectively arranged on two sides of the main pipeline and are positioned on two sides of the liquid filling pump.

9. The liquid filling and draining device according to claim 7, further comprising a filter disposed at a liquid outlet end of the liquid filling pump, the filter being configured to filter liquid output from the liquid filling pump.

10. The liquid filling and draining device according to claim 1, wherein the first container is provided with a first breather valve and the second container is provided with a second breather valve.

11. The liquid injection and drainage device of claim 1, further comprising an automatic guide vehicle, wherein the first container, the second container and the connecting pipe are all disposed on the automatic guide vehicle.

12. The liquid filling and draining device according to claim 1, wherein the liquid to be replenished device is a cold plate liquid cooling system of a data center.

13. The liquid filling and draining device according to claim 12, wherein the cold plate liquid cooling system comprises a cooling liquid distribution unit, and the cooling liquid distribution unit comprises a heat exchanger, a circulating water pump, a liquid supplementing port and a liquid draining port.