Automatic cold plate flow resistance testing system

Abstract

The invention provides a cold plate flow resistance testing system, and aims to provide a flow resistance testing system which is high in automation degree and testing accuracy. The technical scheme includes that a three-loop environmental control liquid separation parallel flow path is serially connected between a double-loop installation circulation circuit for a cold plate to be tested and a cold liquid circulation circuit, a differential pressure sensor (1) is communicated with a common connection point of a return liquid storage box (19) and a bypass adjusting valve (18) through a circulation pipeline to form a cold plate flow resistance testing circulation circuit, a circulation pump (17) is electrically connected with a control computer (22) through a variable frequency control unit (20), the bypass adjusting valve (18) is electrically connected with the control computer (22) through a bypass adjusting valve control unit (21), the control computer selects different set step lengths through control interfaces and interface cards of corresponding hardware according to measuring ranges and measuring step lengths set by Labview software, differential pressure values of flow points and resistance values of corresponding sub-points within a flow range are automatically measured, and resistance characteristic curves of test objects are automatically outputted.

Description

technical field [0001] The invention relates to the field of thermal testing of electronic equipment, and relates to a testing system for measuring the flow resistance of a liquid-cooled cold plate. Background technique [0002] In recent years, with the continuous increase of heat consumption and heat flux density of avionics equipment, more and more environmental control systems have begun to use liquid cooling technology. The electronic equipment is modularized, with multi-layer layout and compact stacking, and adopts the structural form of mounting heating components on both sides of the liquid-cooled cold plate. The liquid-cooled cold plate is an important carrier of the cooling method commonly used in electronic equipment. Whether it is penetrating liquid cooling or conductive liquid cooling, the cold plate is required as a heat sink for heat dissipation. The flow resistance of the heat sink is directly related to the actual flow rate of the cold plate under a certain...

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to aim at the deficiencies of the prior art with low degree of automation, cumbersome and complicated process of clamping different cold plates, and low test efficiency, and combine the software and hardware functional characteristics of the existing Labview programming to provide a fast test, Liquid-cooled cold plate flow resistance test system with high degree of automation, high test accuracy, strong expansion capability and versatility

Images