Liquid safety protection method for mute liquid-cooled cabinet

Abstract

The invention discloses a liquid safety protection method for a mute liquid cooling cabinet, and relates to the technical field of liquid safety for electronic equipment. According to the method, the liquid supply flow, the liquid return flow, the liquid supply temperature, the liquid supply pressure, the liquid leakage alarm and the air temperature and humidity in the liquid cooling cabinet are monitored, analysis and judgment are carried out through the environmental control board, and the operation state and response measures are sent to the upper computer. By analyzing the difference value of the liquid supply flow and the liquid return flow, large-flow liquid leakage can be found in the first time, and the serious liquid soaking risk of electronic equipment in the cabinet is avoided; condensation can be prevented by monitoring and analyzing the liquid supply temperature and the air temperature and humidity; and the liquid leakage sensor provides secondary protection, so that large-flow, leakage and dripping leakage and local condensation can be found in time.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid safety for electronic equipment, and in particular to a liquid safety protection method for a silent liquid cooling cabinet. Background Art

[0002] The cabinet is the supporting body and cooling carrier of the printed circuit board plug-in and plug-in box. At present, the printed circuit board plug-in and plug-in box usually adopt forced air cooling to control the temperature rise of their heating components. Correspondingly, the cabinet adopts primary ambient air cooling or secondary circulation air cooling of air-to-air / air-to-liquid heat exchange. In the case of low total heat consumption and low noise requirements, the above cabinet cooling method can meet the temperature control requirements. However, for cabinets with a total heat consumption of more than 3.5kW, or cabinets containing high heat flux density devices, or cabinets with strict noise requirements, the above cabinet cooling method is difficult to meet the temperature control requirements of heat-generating devices or cabinet cost control requirements: First, the air cooling form itself cannot meet the heat dissipation requirements of high heat consumption and high heat flux density devices; second, there are many cables and connectors inside the cabinet, and the layout is relatively complex, making it difficult to form a good airflow organization, and it is easy to have flow dead zones, causing local overheating; third, the selection of high-speed fans will increase the difficulty of cabinet noise reduction, and the cost of silent fans is higher, which is not conducive to cabinet cost control; in addition, the reliability, life and maintenance of the fans used for forced air cooling are also the shortcomings of cabinets using air cooling. With the further development of electronic technology, the heat consumption of equipment is getting higher and higher, and the noise index requirements are becoming more and more stringent. The current primary ambient air cooling method or secondary circulation air cooling method can no longer meet the use requirements.

[0003] In response to this, liquid-cooled silent cabinets with internal liquid cooling came into being. Liquid-cooled cabinets can be divided into plug-in box liquid-through side wall cooling type and plug-in module liquid-through type. By taking advantage of the high heat transfer coefficient and large specific heat capacity of liquid media, they can easily meet the total heat exchange requirements of cabinets above 3.5kW or the temperature control requirements of high heat flux density devices, and can operate silently at less than 55dB. However, the internal liquid flow of the cabinet brings about liquid safety issues that cannot be ignored: first, the liquid supply system fluctuates, resulting in too low a liquid supply flow or too high a liquid supply temperature, which will affect the heat dissipation of the cabinet, and when the liquid supply temperature is too low, condensation will occur and bring the risk of damage to electronic devices; second, liquid leakage will contaminate and damage electronic devices, and the leakage problem under liquid cooling cannot be completely avoided. How to detect the leakage at the first time and take timely measures is particularly critical; third, when the coolant pressure in the cabinet is too high, the risk of leakage will increase.

[0004] At present, there are not many reports related to the safety protection of liquid use. The existing technology pays more attention to the leakage and condensation problems, and pays less attention to the heat dissipation risk and the fluctuation of the operating pressure of the coolant. And it mainly monitors single index parameters or directly alarms and displays them. There is basically no comprehensive analysis, reprocessing and targeted response measures given on the basis of heat dissipation, leakage, condensation and back pressure. It cannot well meet the needs of the host computer for rapid fault location or reducing the impact of faults on system operation. Summary of the invention

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention provides a method for protecting the safety of liquid used in a silent liquid-cooled cabinet, which can timely detect abnormal liquid flow and a silent liquid-cooled cabinet liquid safety protection strategy with multi-level joint protection control. This method aims at the problems of heat dissipation, leakage, condensation and high back pressure that may exist in a silent liquid-cooled cabinet. A liquid supply flow sensor, a liquid return flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a liquid leakage sensor and an air temperature and humidity sensor are arranged in the cabinet to monitor the liquid supply flow, liquid return flow, liquid supply temperature, liquid supply pressure, liquid leakage alarm and air temperature and humidity in the cabinet. The environmental control board arranged in the cabinet collects, analyzes, judges and sends the operating status and appropriate countermeasures to the host computer. The host computer jointly controls the liquid supply system and the power-off inspection or forced operation of the liquid-cooled cabinet to realize timely detection of abnormal liquid flow and multi-level joint protection control to ensure the safety of liquid used in the liquid-cooled cabinet.

[0006] The purpose of the present invention is to provide a silent liquid cooling cabinet liquid safety protection method for liquid cooling cabinet liquid protection, the method adopts a liquid supply flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor installed at the cooling liquid inlet of the liquid cooling cabinet, a return liquid flow sensor installed at the cooling liquid outlet, an air temperature and humidity sensor installed inside the cabinet and a liquid leakage sensor installed at the bottom of the cabinet; as well as an environmental control board and a host computer; including:

[0007] By installing a liquid supply flow sensor, a liquid return flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a liquid leakage sensor, and an air temperature and humidity sensor in the liquid cooling cabinet, the liquid supply flow, liquid return flow, liquid supply temperature, liquid supply pressure, liquid leakage alarm, and air temperature and humidity in the liquid cooling cabinet are monitored.

[0008] The liquid supply flow, liquid return flow, liquid supply temperature, liquid supply pressure, liquid leakage alarm, and air temperature and humidity are transmitted to the environmental control board installed in the liquid cooling cabinet; the environmental control board analyzes, judges, and sends the operating status and response measures to the host computer, which then controls the liquid supply system and the liquid cooling cabinet to perform power-off inspection or forced operation.

[0009] Preferably, when the environmental control board analyzes, judges and sends the operating status and countermeasures to the host computer, it includes:

[0010] When the liquid supply flow rate monitored by the liquid supply flow sensor and the liquid return flow rate monitored by the liquid return flow sensor exceed the set difference after analysis by the environmental control board, the upper computer is reported and requested to immediately power off and check for leaks;

[0011] When the liquid supply flow rate is lower than the set value after analysis by the environmental control board, it will report to the host computer and request the host computer to increase the liquid supply flow rate.

[0012] Preferably, when the environmental control board analyzes, judges and sends the operating status and countermeasures to the host computer, it includes:

[0013] When the liquid supply temperature detected by the liquid supply temperature sensor is higher than the set value after analysis by the environmental control board, it will report to the host computer and request the host computer to lower the liquid supply temperature;

[0014] When the liquid supply temperature is lower than the machine dew point temperature corresponding to the air temperature and humidity monitored by the air temperature and humidity sensor after analysis by the environmental control board, it will be reported to the host computer and requested to increase the liquid supply temperature.

[0015] Preferably, when the environmental control board analyzes, judges and sends the operating status and countermeasures to the host computer, it includes:

[0016] When a drop of liquid falls on the sensor or a pool of accumulated liquid contacts the sensor, the sensor will issue a leakage alarm, and the environmental control board will collect and analyze whether it is a leakage problem or a condensation problem;

[0017] If the liquid supply temperature is lower than the dew point temperature of the air machine inside the cabinet, it is a local condensation problem. The environmental control board reports to the host computer and requests the host computer to increase the liquid supply temperature;

[0018] If the liquid supply temperature is already higher than the dew point temperature of the air machine inside the cabinet, or if there is still a leakage alarm after the liquid supply temperature is increased for a period of time, it is a leakage problem. The environmental control board reports to the host computer and requests the host computer to cut off power and check for leaks.

[0019] Preferably, when the environmental control board analyzes, judges and sends the operating status and countermeasures to the host computer, it includes:

[0020] When the liquid supply pressure monitored by the liquid supply pressure sensor is higher than the set value after analysis by the environmental control board, it is reported to the host computer and requested to check whether there is blockage in the liquid supply system pipeline and the internal flow channel of the liquid cooling cabinet.

[0021] Preferably, the air temperature and humidity sensors are arranged at multiple points at different locations inside the liquid cooling cabinet.

[0022] Preferably, the liquid leakage sensor is a cable-type liquid leakage sensor.

[0023] Preferably, the environmental control board serves as the control center of the liquid safety protection strategy for the silent liquid cooling cabinet, supplies power to the liquid supply flow sensor, liquid return flow sensor, liquid supply temperature sensor, liquid supply pressure sensor, liquid leakage sensor, and air temperature and humidity sensor, and collects and solves the monitoring values ​​sent back by each sensor, and after calculation and analysis, sends the obtained operating status and countermeasures to the host computer in the form of a message.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a method for protecting the liquid safety of a silent liquid-cooled cabinet. By analyzing the difference between the supply and return liquid flow rates, the present invention can detect large-flow liquid leakage in the first place, thereby avoiding the serious risk of liquid soaking in the electronic equipment in the cabinet. By monitoring and analyzing the liquid supply temperature and the air temperature and humidity, condensation can be prevented. The leakage sensor provides a second level of protection, which can detect large-flow, seepage, dripping liquid leakage and local condensation in time.

[0026] The present invention collects monitoring values ​​of various sensors through the environmental control board, comprehensively analyzes the causes of abnormal state of cabinet liquid use and provides targeted countermeasures, which is beneficial to shorten the fault locating time and reduce the impact of the fault on system operation.

[0027] The sensors and environmental control panels used in the present invention are of mature technology and high reliability, and can be installed in a distributed manner inside the cabinet without affecting the overall layout of the cabinet, and have strong adaptability and scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an exploded schematic diagram of the structure of the silent liquid cooling cabinet of the present invention;

[0029] Figure 2 It is a schematic diagram of the cooling liquid flow path of the silent liquid cooling cabinet of the present invention (the rotating rack is opened and the plug-in module is hidden);

[0030] Figure 3 It is a schematic diagram of the physical units of the liquid safety protection strategy of the present invention;

[0031] Figure 4 It is a logic control flow chart of the liquid safety protection strategy of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand and implement the technical solution of the present invention, the present invention is further described below in conjunction with specific embodiments and drawings, but the embodiments are not intended to limit the present invention.

[0033] The purpose of the present invention is to provide a method for protecting the liquid safety of a silent liquid-cooled cabinet. The method mainly aims at the problems of heat dissipation, liquid leakage, condensation and high back pressure that may exist in the silent liquid-cooled cabinet. A liquid supply flow sensor, a liquid return flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a liquid leakage sensor and an air temperature and humidity sensor are arranged in the cabinet to monitor the liquid supply flow, liquid return flow, liquid supply temperature, liquid supply pressure, liquid leakage alarm and air temperature and humidity in the cabinet. The environmental control board arranged in the cabinet collects, analyzes, judges and sends the operating status and appropriate countermeasures to the host computer. The host computer jointly controls the power-off inspection or forced operation of the liquid supply system and the liquid-cooled cabinet, so as to realize timely detection of liquid flow abnormalities and multi-level joint protection control to ensure the safety of liquid in the liquid-cooled cabinet.

[0034] like Figures 1 to 3 The figure shows a schematic diagram of the structure of the silent liquid cooling cabinet, the cooling liquid flow path and the physical unit of the liquid safety protection strategy of the present invention. The liquid cooling cabinet includes a cabinet body, a rear door is arranged at the rear side of the cabinet body, wherein a back vibration isolation system is arranged on the outer side of the rear door; a rotating frame fixing device is arranged in the cabinet body, and the rotating frame fixing device includes a rotating frame, which is arranged on the cabinet body through a hinge, and a liquid cooling plug-in box is arranged on the rotating frame, and the liquid cooling plug-in box is used to install the plug-in module, wherein the liquid cooling plug-in box is provided with a pipe body for the flow of cooling liquid; a fluid distributor is also arranged on the rotating frame; a pipeline connecting the pipe body is arranged in the cabinet body and a drainage device is arranged at the bottom; a bottom vibration isolation system is arranged at the bottom of the cabinet body; a front door is arranged at the front side of the cabinet body, and a door lock is arranged at the closing part of the front door and the cabinet body.

[0035] The plug-in module is installed in the liquid-cooled plug-in box, which is liquid-cooled. The plug-in module can be selected as liquid-through type or side-wall cooling type according to the heat consumption. The cabinet rotating frame can accommodate 4 liquid-cooled plug-ins. Because the heat dissipation capacity of the liquid-cooled cabinet is significantly improved compared to the air-cooled cabinet, it allows to further improve the cabinet space utilization rate. A fixed frame is set in the back half of the cabinet, that is, behind the rotating frame, and the liquid-cooled plug-in box can also be placed on the fixed frame. The liquid supply flow rate of each liquid-cooled plug-in box does not exceed 6L / min. The side-wall cooling type liquid-cooled plug-in box meets the 1.5kW heat dissipation requirement, and the module liquid-through type liquid-cooled plug-in box meets the 4kW heat dissipation requirement. According to the total heat dissipation requirement, the rated liquid supply flow rate of the liquid-cooled cabinet is generally 24~48L / min.

[0036] The environmental control board is installed on the inner side wall of the liquid cooling cabinet, and the sensors are distributed and installed at the corresponding positions inside the liquid cooling cabinet. The liquid supply flow sensor is installed on the cabinet liquid supply port side pipeline; the return liquid flow sensor is installed on the cabinet return port side pipeline; the liquid supply temperature sensor is installed on the cabinet liquid supply port side pipeline; the liquid supply pressure sensor is installed on the cabinet liquid supply port side pipeline; the leakage sensor is installed on the cabinet bottom plate; 3 or more air temperature and humidity sensors are installed, respectively set at the upper, middle and lower parts of the cabinet, monitor the air temperature and humidity values ​​at the 3 places, and calculate the corresponding 3 machine dew point temperatures. The highest machine dew point temperature is taken for subsequent logic control analysis.

[0037] To achieve the above purpose, see Figures 1 to 3 As shown, a silent liquid cooling cabinet liquid safety protection method is used for liquid cooling cabinet liquid protection. The method adopts a liquid supply flow sensor, a liquid supply temperature sensor, and a liquid supply pressure sensor installed at the cooling liquid inlet of the liquid cooling cabinet, a return liquid flow sensor installed at the cooling liquid outlet, an air temperature and humidity sensor installed inside the cabinet, and a liquid leakage sensor installed at the bottom of the cabinet; as well as an environmental control board and a host computer; including:

[0038] By installing a liquid supply flow sensor, a liquid return flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a liquid leakage sensor, and an air temperature and humidity sensor in the liquid cooling cabinet, the liquid supply flow, liquid return flow, liquid supply temperature, liquid supply pressure, liquid leakage alarm, and air temperature and humidity in the liquid cooling cabinet are monitored.

[0039] The liquid supply flow, liquid return flow, liquid supply temperature, liquid supply pressure, liquid leakage alarm, and air temperature and humidity are transmitted to the environmental control board installed in the liquid cooling cabinet; the environmental control board analyzes, judges, and sends the operating status and response measures to the host computer, which then controls the liquid supply system and the liquid cooling cabinet to perform power-off inspection or forced operation.

[0040] Among them, when the environmental control board analyzes, judges and sends the operating status and response measures to the host computer, it includes:

[0041] When the liquid supply flow rate monitored by the liquid supply flow sensor and the liquid return flow rate monitored by the liquid return flow sensor exceed the set difference after analysis by the environmental control board, the upper computer is reported and requested to immediately power off and check for leaks;

[0042] When the liquid supply flow rate is lower than the set value after analysis by the environmental control board, it will report to the host computer and request the host computer to increase the liquid supply flow rate.

[0043] When the liquid supply temperature detected by the liquid supply temperature sensor is higher than the set value after analysis by the environmental control board, it will report to the host computer and request the host computer to lower the liquid supply temperature;

[0044] When the liquid supply temperature is lower than the machine dew point temperature corresponding to the air temperature and humidity monitored by the air temperature and humidity sensor after analysis by the environmental control board, it will be reported to the host computer and requested to increase the liquid supply temperature.

[0045] When a drop of liquid falls on the sensor or a pool of accumulated liquid contacts the sensor, the sensor will issue a leakage alarm, and the environmental control board will collect and analyze whether it is a leakage problem or a condensation problem;

[0046] If the liquid supply temperature is lower than the dew point temperature of the air machine inside the cabinet, it is a local condensation problem. The environmental control board reports to the host computer and requests the host computer to increase the liquid supply temperature;

[0047] If the liquid supply temperature is already higher than the dew point temperature of the air machine inside the cabinet, or if there is still a leakage alarm after the liquid supply temperature is increased for a period of time, it is a leakage problem. The environmental control board reports to the host computer and requests the host computer to cut off power and check for leaks.

[0048] When the liquid supply pressure monitored by the liquid supply pressure sensor is higher than the set value after analysis by the environmental control board, it is reported to the host computer and requested to check whether there is blockage in the liquid supply system pipeline and the internal flow channel of the liquid cooling cabinet.

[0049] Specifically, the air temperature and humidity sensors are arranged at multiple locations inside the liquid cooling cabinet.

[0050] The liquid leakage sensor is a cable type liquid leakage sensor.

[0051] The environmental control board serves as the control center of the liquid safety protection strategy for the silent liquid cooling cabinet. It supplies power to the liquid supply flow sensor, liquid return flow sensor, liquid supply temperature sensor, liquid supply pressure sensor, liquid leakage sensor, and air temperature and humidity sensor, and collects and calculates the monitoring values ​​sent back by each sensor. After calculation and analysis, the obtained operating status and response measures are sent to the host computer in the form of a message.

[0052] In order to illustrate a liquid safety protection method for a silent liquid cooling cabinet provided by the present invention, Figures 1 to 3 Provide a description, including:

[0053] 1) The liquid supply flow sensor installed at the cabinet coolant inlet and the liquid return flow sensor installed at the cabinet coolant outlet are mainly used to solve the problem of large flow leakage and heat dissipation caused by too low liquid supply flow.

[0054] When the liquid supply flow rate monitored by the liquid supply flow sensor and the liquid return flow rate monitored by the liquid return flow sensor exceed the set difference after analysis by the environmental control board, the host computer is reported and requested to immediately cut off power and check for leaks; when the liquid supply flow rate is lower than the set value after analysis by the environmental control board, the host computer is reported and requested to increase the liquid supply flow rate.

[0055] 2) The liquid supply temperature sensor installed at the coolant inlet of the cabinet and the air temperature and humidity sensor installed inside the cabinet are mainly used to detect heat dissipation problems caused by excessively high liquid supply temperature and condensation problems caused by excessively low liquid supply temperature.

[0056] When the liquid supply temperature monitored by the liquid supply temperature sensor is higher than the set value after analysis by the environmental control board, it is reported to the host computer and the host computer is requested to lower the liquid supply temperature; when the liquid supply temperature is lower than the machine dew point temperature corresponding to the air temperature and humidity monitored by the air temperature and humidity sensor after analysis by the environmental control board, it is reported to the host computer and the host computer is requested to increase the liquid supply temperature.

[0057] 3) The leakage sensor installed at the bottom of the cabinet is mainly used to detect leakage, dripping and condensation problems.

[0058] When a drop of liquid falls on the sensor or a pool of accumulated liquid contacts the sensor, the sensor issues a leakage alarm, and the environmental control board collects and analyzes whether it is a leakage problem or a condensation problem. If the liquid supply temperature is lower than the dew point temperature of the air machine inside the cabinet, it is a local condensation problem. The environmental control board reports to the host computer and requests the host computer to increase the liquid supply temperature; if the liquid supply temperature is already higher than the dew point temperature of the air machine inside the cabinet, or there is still a leakage alarm after the liquid supply temperature is increased for a period of time, it is a leakage problem. The environmental control board reports to the host computer and requests the host computer to cut off the power and check for leaks.

[0059] 4) The liquid supply pressure sensor installed at the coolant inlet of the cabinet is mainly used to solve the problem of high back pressure.

[0060] When the liquid supply pressure monitored by the liquid supply pressure sensor is higher than the set value after analysis by the environmental control board, it is reported to the host computer and requested to check whether there is blockage in the liquid supply system pipeline and the internal flow channel of the liquid cooling cabinet.

[0061] The liquid supply flow sensor and liquid return flow sensor are selected with high accuracy, so that the flow difference between the supply and return liquids can be set smaller, so as to better monitor the leakage of smaller flow rates.

[0062] Air temperature and humidity sensors can be set at multiple locations inside the cabinet, so that the dew point temperature of the machine obtained is more representative and can better prevent local condensation.

[0063] The leakage sensor uses a cable-type leakage sensor, which can monitor the leakage of water, ethylene glycol aqueous solution, and aviation coolant over a large area.

[0064] The environmental control board serves as the control center of the liquid safety protection strategy for the silent liquid cooling cabinet. It supplies power to the liquid supply flow sensor, return liquid flow sensor, liquid supply temperature sensor, liquid supply pressure sensor, liquid leakage sensor, and air temperature and humidity sensor. It also collects and calculates the monitoring values ​​sent back by each sensor. After calculation and analysis, the operating status and response measures are sent to the host computer in the form of a message.

[0065] In order to further illustrate the liquid safety protection method for the silent liquid cooling cabinet provided by the present invention, Figure 4 Further explanation. Figure 4 This is a logic control flow chart of the liquid safety protection strategy of the present invention, and the control logic is as follows:

[0066] 1) When the liquid supply flow rate is lower than the set value, generally 70% of the rated value, there is a heat dissipation risk, and the host computer is reported and requested to increase the liquid supply flow rate.

[0067] 2) When the difference between the liquid supply flow rate and the liquid return flow rate exceeds the set value of 2L / min, there is a risk of large-flow leakage, and the host computer is reported and requested to immediately cut off the power and check for leaks.

[0068] 3) When the liquid supply temperature is higher than the set value of 45°C, there is a heat dissipation risk, and the host computer is reported and requested to lower the liquid supply temperature.

[0069] 4) When the liquid supply temperature is lower than the machine dew point temperature, there is a risk of condensation, and the host computer is reported and requested to increase the liquid supply temperature.

[0070] 5) When the leakage sensor issues a leakage alarm, if the liquid supply temperature is lower than the machine dew point temperature at this time, there is local condensation, and the upper computer is reported and requested to increase the liquid supply temperature; if the liquid supply temperature is higher than the machine dew point temperature at this time, or there is still a leakage alarm after the liquid supply temperature is increased for a period of time, there is leakage or dripping, and the upper computer is reported and requested to cut off the power and check for leaks.

[0071] 6) When the liquid supply pressure is higher than the set value of 7 bar, there is an increased risk of blockage and leakage, and the host computer is reported and requested to check whether there is blockage in the liquid supply system pipeline and the internal flow channel of the liquid cooling cabinet.

[0072] 7) If none of the above problems occur, the environmental control board reports to the host computer that "the silent liquid cooling cabinet uses normal liquid", and conducts a new round of data collection, solution, analysis, and reports the operating status and response measures.

[0073] The present invention describes preferred embodiments and their effects. However, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid safety protection method for a silent liquid cooling cabinet, characterized in that: For liquid protection of liquid cooling cabinets, the method uses a liquid supply flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor installed at the coolant inlet of the liquid cooling cabinet, a return liquid flow sensor installed at the coolant outlet, an air temperature and humidity sensor installed inside the cabinet, and a liquid leakage sensor installed at the bottom of the cabinet; As well as environmental control board and host computer; including: By installing a liquid supply flow sensor, a liquid return flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a liquid leakage sensor, and an air temperature and humidity sensor in the liquid cooling cabinet, the liquid supply flow, liquid return flow, liquid supply temperature, liquid supply pressure, liquid leakage alarm, and air temperature and humidity in the liquid cooling cabinet are monitored. Transmit the liquid supply flow, liquid return flow, liquid supply temperature, liquid supply pressure, liquid leakage alarm, and air temperature and humidity to the environmental control board installed in the liquid cooling cabinet; The environmental control board analyzes, judges and sends the operating status and response measures to the host computer, which then controls the liquid supply system and the liquid cooling cabinet to power off for inspection or forced operation.

2. The liquid safety protection method for silent liquid cooling cabinet according to claim 1 is characterized in that: When the environmental control board analyzes, judges and sends the operating status and countermeasures to the host computer, it includes: When the liquid supply flow rate monitored by the liquid supply flow sensor and the liquid return flow rate monitored by the liquid return flow sensor exceed the set difference after analysis by the environmental control board, the upper computer is reported and requested to immediately power off and check for leaks; When the liquid supply flow rate is lower than the set value after analysis by the environmental control board, it will report to the host computer and request the host computer to increase the liquid supply flow rate.

3. The liquid safety protection method for silent liquid cooling cabinet according to claim 1 is characterized in that: When the environmental control board analyzes, judges and sends the operating status and countermeasures to the host computer, it includes: When the liquid supply temperature detected by the liquid supply temperature sensor is higher than the set value after analysis by the environmental control board, it will report to the host computer and request the host computer to lower the liquid supply temperature; When the liquid supply temperature is lower than the machine dew point temperature corresponding to the air temperature and humidity monitored by the air temperature and humidity sensor after analysis by the environmental control board, it will be reported to the host computer and requested to increase the liquid supply temperature.

4. The liquid safety protection method for silent liquid cooling cabinet according to claim 1 is characterized in that: When the environmental control board analyzes, judges and sends the operating status and countermeasures to the host computer, it includes: When a drop of liquid falls on the sensor or a pool of accumulated liquid contacts the sensor, the sensor will issue a leakage alarm, and the environmental control board will collect and analyze whether it is a leakage problem or a condensation problem; If the liquid supply temperature is lower than the dew point temperature of the air machine inside the cabinet, it is a local condensation problem. The environmental control board reports to the host computer and requests the host computer to increase the liquid supply temperature; If the liquid supply temperature is already higher than the dew point temperature of the air machine inside the cabinet, or if there is still a leakage alarm after the liquid supply temperature is increased for a period of time, it is a leakage problem. The environmental control board reports to the host computer and requests the host computer to cut off power and check for leaks.

5. The liquid safety protection method for silent liquid cooling cabinet according to claim 1 is characterized in that: When the environmental control board analyzes, judges and sends the operating status and countermeasures to the host computer, it includes: When the liquid supply pressure monitored by the liquid supply pressure sensor is higher than the set value after analysis by the environmental control board, it is reported to the host computer and requested to check whether there is blockage in the liquid supply system pipeline and the internal flow channel of the liquid cooling cabinet.

6. The liquid safety protection method for silent liquid cooling cabinet according to claim 1 is characterized in that: The air temperature and humidity sensors are arranged at multiple points at different locations inside the liquid cooling cabinet.

7. The liquid safety protection method for silent liquid cooling cabinet according to claim 1 is characterized in that: The liquid leakage sensor is a cable type liquid leakage sensor.

8. The liquid safety protection method for silent liquid cooling cabinet according to claim 1 is characterized in that: The environmental control board serves as the control center of the liquid safety protection strategy for the silent liquid cooling cabinet. It supplies power to the liquid supply flow sensor, liquid return flow sensor, liquid supply temperature sensor, liquid supply pressure sensor, liquid leakage sensor, and air temperature and humidity sensor, and collects and calculates the monitoring values ​​sent back by each sensor. After calculation and analysis, the obtained operating status and response measures are sent to the host computer in the form of a message.

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