Heat exchanger performance experiment device

Abstract

The invention discloses a heat exchanger performance experiment device and in particular relates to an experiment device for testing the pressure pulse resistance and the cold-hot alternation resistance of the heat exchanger. The device comprises a cold oil tank, a hot oil tank, a measurement and control system, a pumping set and pipelines. A cold subsystem and a hot subsystem which are basically symmetric coexist in a system, cold and hot media reach the required high pressure and low pressure respectively through pressure-regulating devices in own subsystems, and the high and low pressure alternation cycle is regulated by a switching device. A heat exchanger reliability test bed established by the new technology can not only complete independent basic tests of pressure alternation, cold-hot alternation and the like but also complete the coupling tests with temperature and pressure changed simultaneously, thereby simulating combined impact borne by the heat exchanger when in use. Compared with the currently adopted testing technology of mutual separation of environment variables, the technology of the invention can reflect the reliability of the heat exchanger more truly and has better guiding effects on design, production and utilization of the heat exchanger.

Description

technical field [0001] The invention relates to an experimental device, in particular to an experimental device capable of testing the pressure pulse resistance, cold-heat alternating resistance and cold-heat alternating coupling performance of a heat exchanger. Background technique [0002] As an important part of the power auxiliary system, the vehicle heat dissipation system is under very complicated working conditions. The variable pressure pulse and alternating cold and heat conditions determine that the thin-walled structure of the heat exchanger of the heat dissipation system must bear the pressure of liquid or gas. The impact caused by repeated changes in medium pressure and temperature will cause fatigue damage to the heat dissipation system, especially the peak value of external pressure pulses often exceeds the allowable pressure value of the heat exchanger; and cold and heat shocks will affect the temperature-sensitive areas of the radiator such as fins. Continuo...

AI Technical Summary

Problems solved by technology

The disadvantages of this testing technology are that it cannot truly simulate the compound changes of pressure and temperature inside the heat exchanger during actual use, nor can it meet the needs of special vehicles with large volume, large flow, and high temperature. Heater test requirements

Secondly, due to the great repeatability of the instruments and equipment required for these two reliability tests, it caused a waste of resources to a certain extent.

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