A liquid replenishment system and its control method

Abstract

The invention discloses a liquid replenishment system and a control method thereof. The main flow of the control method is: pre-set the relevant parameters of a liquid level sensor and a liquid replenishment pump in a controller; the liquid level sensor detects the liquid level of the liquid in a liquid replenishment tank , the controller adjusts the working state of the rehydration pump according to the running time of the rehydration pump; the inlet pressure sensor detects the actual inlet pressure value of the main pump inlet pipeline; if the actual inlet pressure value ≤ the rehydration start pressure value, the controller controls the rehydration When the pump is started, the rehydration pump supplies liquid to the circulation system of the main pump through the rehydration pipeline of the main pump; if the actual inlet pressure value ≥ the stop pressure value of the rehydration pump, the controller controls the rehydration pump to continue running for N seconds and then the rehydration pump stops running; the rehydration pump provided by the invention The control method of the system can automatically refill the main pump circulation system of the liquid cooling heat exchange unit and realize the multi-functional protection of system components to ensure the normal operation of the cooling heat exchange unit and avoid losses to the data center due to reduced heat dissipation efficiency .

Description

technical field [0001] The invention relates to the technical field of liquid cooling and heat exchange, in particular to a liquid replenishment system and a control method thereof. Background technique [0002] With the continuous increase of high-density cabinets in the data center computer room and the increasing integration and power of server chips, in the existing technology, liquid cooling technology has begun to be used to solve the problem of increasing equipment power; liquid cooling technology is generally divided into structural applications. It is an indirect cold plate type, direct cold plate type, immersion type, etc. Since the distance between the cold source and the heat source is relatively small, and the non-gas cooling scheme is adopted, it is basically not limited by the deployment area and can meet the demand for increased server power in the data center . [0003] Liquid cooling technology generally includes a liquid cooling heat exchange unit. Howeve...

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Problems solved by technology

[0003] Liquid cooling technology generally includes a liquid cooling heat exchange unit. However, in the prior art, some liquid cooling heat exchange units do not have a matching liquid replenishment device, that is, there is no liquid replenishment function. During the commissioning and operation of the liquid cooling heat exchange unit, there will be Insufficient pressure of the liquid circulation system, unstable operation, cavitation damage of the circulation pump of the liquid circulation system, etc., resulting in inability to operate safely or complete commissioning

[0004] In addition, in the prior art, some liquid cooling heat exchange units have the function of rehydration, but generally only one rehydration bag without any functional protection is equipped, resulting in the failure of normal rehydration and the uncontrollable pressure of the liquid cooling heat exchange unit during operation. , abnormal operation due to insufficient pressure in the circulation system, etc., which will eventually lead to damage to the liquid replenishment device, cavitation of the circulation pump, downtime and burnout of the liquid-cooled server, which will affect the normal operation of the equipment in the cabinet, thereby bringing about serious loss

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