Built-in automatic liquid supplementing unit of liquid cooling equipment

Abstract

The utility model discloses a built-in automatic liquid supplementing unit of liquid cooling equipment, which comprises an external container, a built-in liquid supplementing unit and a liquid cooling unit, the built-in liquid supplementing unit comprises a liquid supplementing container shell, a first one-way valve, a first liquid level sensor, a second liquid level sensor, a third liquid level sensor, a first ball valve, a second ball valve, a third ball valve and a breather valve, and the third ball valve and the breather valve are arranged at the top of the liquid supplementing container shell; the first pipeline is provided with a filter and a first liquid supplementing pump, the second ball valve is communicated with a unit pump inlet pipe in the liquid cooling unit through a second pipeline, the second pipeline is provided with a second liquid supplementing pump and a second one-way valve, the third ball valve is communicated with a unit pump outlet pipe in the liquid cooling unit through a third pipeline, and the third pipeline is provided with a safety valve. According to the three-level liquid level, the idling risk of the liquid supplementing pump is prevented, early warning can be conducted in advance, and a full-automatic liquid supplementing mechanism is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of central liquid cooling systems, and in particular to an automatic liquid replenishment unit built into a liquid cooling device. Background Technology

[0002] Data center liquid cooling technology has gradually evolved from relying on air cooling to single-phase / two-phase liquid cooling systems. The CDU, as a core component, undertakes the functions of coolant circulation and pressure regulation. Existing technologies mostly use external liquid replenishment tanks or manual liquid replenishment methods.

[0003] The existing technology has the following drawbacks:

[0004] a. Liquid replenishment lag: External liquid replenishment relies on manual monitoring, and the response delay can lead to excessively low system pressure, affecting heat dissipation efficiency and even damaging terminal equipment;

[0005] b. Inaccurate fluid resuscitation control: Manually controlling fluid resuscitation cannot accurately control the fluid volume, which may lead to CDU.

[0006] If the pressure exceeds or falls below the required threshold, it becomes difficult to maintain the optimal pressure balance state of the CDU system.

[0007] c. Resource waste: High-pressure coolant is discharged directly and cannot be recycled;

[0008] d. Contamination risk: Open-type replenishment systems are prone to introducing impurities and clogging the pipeline;

[0009] e. Inefficient operation and maintenance: Personnel need to carry special tools to frequently check the liquid level and manually replenish the liquid, which is labor-intensive and time-consuming. Utility Model Content

[0010] To address the shortcomings of existing technologies, this utility model provides a built-in automatic liquid replenishment unit for liquid cooling equipment. Through the built-in liquid replenishment unit, pressure adaptive liquid replenishment, liquid level protection, drainage liquid recovery, and contaminant filtration are achieved, significantly reducing the frequency and workload of manual intervention. The three-level liquid level prevents the risk of the liquid replenishment pump running dry and can provide early warning, realizing a fully automated liquid replenishment mechanism, which brings great convenience to production and use.

[0011] To solve the above-mentioned technical problems, the present invention provides a built-in automatic liquid replenishment unit for a liquid cooling device, comprising: an external container, a built-in liquid replenishment unit connected to the external container, and a liquid cooling unit connected to the built-in liquid replenishment unit. The built-in liquid replenishment unit includes a liquid replenishment container shell, a first one-way valve disposed on the liquid replenishment container shell, a first liquid level sensor, a second liquid level sensor, and a third liquid level sensor disposed sequentially from high to low on the liquid replenishment container shell, a first ball valve and a second ball valve disposed at the bottom (not limited to) of the liquid replenishment container shell, and a third ball valve and a breather valve disposed at the top (not limited to) of the liquid replenishment container shell. The external container is connected to the first one-way valve through a first pipeline. A filter and a first liquid replenishment pump are disposed sequentially along the liquid replenishment flow direction on the first pipeline. The second ball valve is connected to the inlet pipe of the unit pump in the liquid cooling unit through a second pipeline. A second liquid replenishment pump and a second one-way valve are disposed on the second pipeline. The third ball valve is connected to the outlet pipe of the unit pump in the liquid cooling unit through a third pipeline.

[0012] In a preferred embodiment of this utility model, a liquid cooling unit safety valve is provided on the third pipeline.

[0013] In a preferred embodiment of the present invention, a background control system is also included, wherein the first liquid level sensor, the second liquid level sensor, the third liquid level sensor, the first replenishment pump, and the second replenishment pump are all connected to the background control system via signals.

[0014] In a preferred embodiment of the present invention, the liquid cooling unit further includes a pressure sensor, which is electrically connected to the background control system.

[0015] In a preferred embodiment of the present invention, a breather valve is provided on the top of the liquid replenishment container shell.

[0016] In a preferred embodiment of this utility model, a mounting bracket is provided on the side of the liquid replenishment container shell.

[0017] The beneficial effects of this utility model are: the combination of the first filter and the one-way valve can effectively block external contaminants from entering the liquid replenishment container shell, reducing the maintenance rate of pipeline blockage. Through the built-in liquid replenishment unit, pressure adaptive liquid replenishment is realized, and the three-level liquid level prevents the risk of the liquid replenishment pump running dry. It can also provide early warning. When the pipeline pressure in the liquid cooling unit exceeds the safety valve threshold, the drained liquid is recovered and discharged into the container of the built-in liquid replenishment unit through the third pipeline, which greatly reduces the frequency and workload of manual intervention, realizes a fully automated liquid replenishment mechanism, completely avoids the response delay and error caused by manual operation, and significantly improves the system pressure control accuracy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of the built-in automatic liquid replenishment unit in the liquid cooling equipment of this utility model;

[0020] Figure 2 This is a schematic diagram of the liquid replenishment unit in this utility model;

[0021] Figure 3 This is a side view of the liquid replenishment unit in this utility model. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see Figure 1-3 This utility model discloses a liquid cooling device with a built-in automatic liquid replenishment unit, comprising: The system comprises an external container 1, an internal replenishment unit 2 connected to the external container, and a liquid cooling unit 3 connected to the internal replenishment unit. Specifically, the internal replenishment unit includes a replenishment container housing 201, a first one-way valve 202 disposed on the replenishment container housing, a first liquid level sensor 203, a second liquid level sensor 204, and a third liquid level sensor 205 disposed sequentially from high to low on the replenishment container housing, a first ball valve 206 and a second ball valve 207 disposed at the bottom of the replenishment container housing (but not limited to the bottom), and a third ball valve 208 disposed at the top of the replenishment container housing (but not limited to the top). The external container is connected to the first one-way valve via a first pipeline 11. A filter 12 and a first replenishment pump 13 are disposed sequentially along the replenishment flow direction on the first pipeline. The first replenishment pump is used to transport the solution in the external container to fill the replenishment container housing of the internal replenishment unit. The replenishment container housing is a sealed structure. The combination of the filter and the first one-way valve blocks external contaminants to ensure that the external solution is clean and flows unidirectionally into the replenishment container housing.

[0024] It also includes a background control system. The first liquid level sensor, the second liquid level sensor, the third liquid level sensor, the first replenishing pump, and the second replenishing pump are all connected to the background control system. The second ball valve is connected to the unit pump inlet pipe 31 in the liquid cooling unit through the second pipeline 209. The second pipeline is equipped with a second replenishing pump 200 and a second check valve 32. When the background control system detects low pressure in the second pipeline, it starts the second replenishing pump. The solution is replenished to the main pipeline of the liquid cooling unit after passing through the second check valve. When the background control system detects that the pressure in the second pipeline reaches the system's required pressure, it controls the second replenishing pump to automatically stop running.

[0025] Specifically, the third ball valve is connected to the unit pump outlet pipe 33 in the liquid cooling unit through the third pipeline 210. The third pipeline is equipped with a liquid cooling unit safety valve 34. The liquid cooling unit also includes a pressure sensor, which is electrically connected to the background control system. One or more pressure sensors can be set to detect the pressure values ​​in the second pipeline, the third pipeline, and the main pipeline of the liquid cooling unit so as to facilitate timely transmission of values ​​to the background control system. When the pipeline pressure of the main pipeline of the liquid cooling unit exceeds the safety valve threshold, the drained liquid is recovered and discharged into the container of the built-in replenishment unit through the third pipeline, which greatly reduces the frequency and workload of manual intervention and avoids solution waste, realizing solution recycling and a fully automated replenishment mechanism.

[0026] Specifically, the replenishment container housing is equipped with a first liquid level sensor 203, a second liquid level sensor 204, and a third liquid level sensor 205. The first ball valve is used to empty the replenishment container of the replenishment unit, facilitating cleaning of the replenishment container. The first liquid level sensor is used to monitor the full liquid level of the replenishment container of the replenishment unit, and stops the operation of the first replenishment pump when full liquid is detected. The second liquid level sensor is used to monitor the low liquid level of the replenishment container of the replenishment unit, indicating that the solution is about to run out. The third liquid level sensor is used to monitor the low liquid level of the replenishment container of the replenishment unit, indicating that the solution has run out. When the third liquid level sensor is triggered, the background control system automatically stops the operation of the second replenishment pump. It should be noted that the background control system can be a PLC control system.

[0027] Specifically, a mounting bracket 211 is provided on the side of the liquid replenishment container shell. The mounting bracket is not limited to being provided on the side. A breather valve 212 is provided on the top of the liquid replenishment container shell, but not limited to the top, to balance the air pressure inside and outside the liquid replenishment container of the built-in liquid replenishment unit and prevent negative pressure / overpressure.

[0028] Workflow:

[0029] Replenishment stage of built-in replenishment unit container: The user starts the first replenishment pump, and the external solution enters the built-in replenishment unit container after passing through the filter and the first one-way valve. When the first liquid level sensor is triggered, the background control system controls the first replenishment pump to stop running.

[0030] During the circulation pipeline replenishment stage: The start and stop of the second replenishment pump is controlled by the real-time pressure signal of the pipeline. When the background control system detects low pressure in the second pipeline, it starts the second replenishment pump. The solution is replenished to the main pipeline of the liquid cooling unit after passing through the second check valve. When the background control system detects that the pressure in the second pipeline reaches the system's required pressure, it controls the second replenishment pump to stop running automatically.

[0031] Safety protection phase: When the third liquid level sensor is triggered, the background control system automatically stops the operation of the second replenishment pump; when the second liquid level sensor is triggered, the background control system will send an early warning signal to the monitoring terminal.

[0032] Drain fluid recovery: When the background control system detects that the pipeline pressure of the main pipeline of the liquid cooling unit exceeds the system safety threshold, the drain fluid is recovered and discharged into the container of the built-in replenishment unit through the third pipeline and the safety valve of the liquid cooling unit. Drain fluid recovery realizes the recycling of coolant and reduces coolant waste.

[0033] The beneficial effects of this utility model are as follows: the combination of the first filter and the one-way valve can effectively block external contaminants from entering the liquid replenishment container housing, reducing the maintenance rate of pipeline blockage. Through the built-in liquid replenishment unit, pressure adaptive liquid replenishment is achieved, and the three-level liquid level prevents the risk of the liquid replenishment pump running dry. It can also provide early warning. When the pipeline pressure in the liquid cooling unit exceeds the safety valve threshold, the drained liquid is recovered and discharged into the container of the built-in liquid replenishment unit through the third pipeline. The drained liquid recovery realizes the recycling of coolant, greatly reducing the frequency and workload of manual intervention, realizing a fully automated liquid replenishment mechanism, completely avoiding the response delay and error caused by manual operation, and significantly improving the system pressure control accuracy.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A liquid cooling device with a built-in automatic liquid replenishment unit, characterized in that, include: The system comprises an external container, an internal replenishment unit connected to the external container, and a liquid cooling unit connected to the internal replenishment unit. The internal replenishment unit includes a replenishment container housing, a first one-way valve disposed on the replenishment container housing, a first liquid level sensor, a second liquid level sensor, a third liquid level sensor disposed sequentially from high to low on the replenishment container housing, a first ball valve and a second ball valve disposed at the bottom of the replenishment container housing, a third ball valve disposed at the top of the replenishment container housing, and a breather valve. The external container is connected to the first one-way valve through a first pipeline. A filter and a first replenishment pump are disposed sequentially along the replenishment flow direction on the first pipeline. The second ball valve is connected to the inlet pipe of the unit pump in the liquid cooling unit through a second pipeline. A second replenishment pump and a second one-way valve are disposed on the second pipeline. The third ball valve is connected to the outlet pipe of the unit pump in the liquid cooling unit through the third pipeline.

2. The liquid cooling device with built-in automatic liquid replenishment unit according to claim 1, characterized in that, A safety valve for the liquid cooling unit is installed on the third pipeline.

3. The liquid cooling device with built-in automatic liquid replenishment unit according to claim 2, characterized in that, It also includes a background control system, in which the first liquid level sensor, the second liquid level sensor, the third liquid level sensor, the first replenishment pump, and the second replenishment pump are all connected to the background control system via signals.

4. The liquid cooling device with built-in automatic liquid replenishment unit according to claim 3, characterized in that, The liquid cooling unit also includes a pressure sensor, which is electrically connected to the background control system.

5. The liquid cooling device with built-in automatic liquid replenishment unit according to claim 1, characterized in that, A breather valve is provided on the top of the liquid replenishment container shell.

6. The liquid cooling device with built-in automatic liquid replenishment unit according to claim 1, characterized in that, The side of the liquid replenishment container shell is provided with a mounting bracket.

Images