Impact test box and impact mode thereof

Abstract

The invention relates to an impact test box. The impact test box is characterized by comprising a high-temperature box (1), a low-temperature box (25) and a control system (28); high-temperature liquid (2) and a high-temperature box heating device (3) are arranged in the high-temperature box (1); low-temperature liquid (24) is arranged in the low-temperature box (25); the temperature of the high-temperature box (1) and the temperature of the low-temperature box (25) are both controlled by the control system (28); the high-temperature box (1) is communicated with a liquid inlet of a test piece (13) through a high-temperature pump (7) and a high-temperature liquid inflow valve (8); the low-temperature box (25) is communicated with a liquid inlet of the test piece (13) through a low-temperature pump (19) and a low-temperature liquid inflow valve (17); a liquid outlet of the test piece (13) is connected back into the high-temperature box (1) and the low-temperature box (25) through a high-temperature liquid return valve (15) and a low-temperature liquid return valve (16). The working environment of the impact test box is comfortable and safe, the test process is automatically completed completely, test conditions have unified standards, human instability factors are removed, and energy consumption is reduced.

Description

technical field [0001] The invention relates to an impact test chamber and its impact method, in particular to a double-pump liquid circulation cold and heat shock test chamber, which is mainly suitable for the liquid circulation heat and cold shock test of the internal medium of the product, and can assess the corrosion resistance, Temperature resistance, pressure resistance and performance life of the material structure and other indicators. Background technique [0002] Under the requirements of the development of modern industry, aerospace, automobile, and other industries are developing rapidly, and the requirements for the performance indicators of the complete equipment are also rising, and more stringent requirements are put forward for the performance indicators of product parts. As an important core component of automobiles and aircrafts, the performance of important components such as engines, radiators, intercoolers, oil coolers, and evaporators directly affects ...

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the shock pump of the liquid ring cold and heat shock test chamber on the market is a single pump type, it has many defects. In the extreme temperature shock, the frequency conversion pump used for shock also bears the constant shock of cold and hot liquid. As a result, the service life of the pump body and blades is greatly reduced, and the pump body part absorbs a lot of heat energy when the temperature is switched, resulting in a large energy loss

Due to the different temperature of high temperature liquid and low temperature liquid, the kinematic viscosity and density of the liquid are very different, the variable frequency pump cannot adjust the flow and pressure of high temperature liquid and low temperature liquid in a short time, resulting in the pressure and flow of liquid inside the test piece. The fluctuation is relatively large, and even the required flow and pressure have not been reached at the end of a shock

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