Test method for equal-pressure difference type flow distribution of closed loop system

Abstract

The invention belongs to the technology of fluid measurement and relates to a test method for equal-pressure difference type flow distribution of a closed loop system. A method of arranging a restrictor ring in each branch equipment, measuring main flow dynamic and adjusting branch flow is adopted, and all branch equipment flow distribution of the system is uniformly matched based on calculation so as to avoid the influence of single equipment flow adjustment on other branch equipment. A sufficient matching reserving method adopted in calculation and calculating measurement adopting a semi-physical principle have not high requirement on measurement precision of system branches where the equipment is positioned. In addition, repeatedly adjusting frequency brought by adjusting single branch equipment is greatly eliminated and the test time and expenditure are greatly saved. Adopting the idea of semi-physical analogue calculation and combining the design and the calculation of the system, the theoretical test method overcomes the defects that the present single test and calculation cannot fully meet the requirement of engineering design to a great degree, and dynamically combines test results and calculation simulation.

Description

technical field [0001] The invention belongs to fluid measurement technology, and relates to a closed-loop system equal pressure difference flow distribution test method. Background technique [0002] With the rapid development of electronic industry integration, the centralized heat dissipation of core electronic components has rapidly increased the local heat flux of the system. Traditional air cooling can no longer meet the needs of centralized heat dissipation of products. The main factor of the reliability of the system. As a new airborne product, the liquid cooling system has high heat exchange efficiency and stable performance. In recent years, it has been widely used in the cooling of aircraft electronic equipment. Reasonable distribution of liquid cooling system flow is the key to reducing system weight and optimizing system performance. [0003] At present, there are mainly two methods used. One is the method of controlling the minimum flow, that is, by increasing...

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Problems solved by technology

[0003] At present, there are mainly two methods used. One is the method of controlling the minimum flow, that is, by increasing the flow and pressure of the main circuit, according to the design requirements, the pressure and flow of the general record are continuously increased to meet and control the minimum flow of the branch. This can solve some common supply problems, but it will cause a great waste of resources; the second method is the recursive method of gradually adjusting a single branch, adjusting one by one from the downstream branch, and so on, to reach all The flow of the branch is balanced, but due to the single adjustment required by this method, the flow and resistance of the entire branch will be repeatedly matched and adjusted, which will increase the difficulty of the test and the test time

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