Thermal cycle test equipment and test method

Abstract

The invention discloses thermal cycle test equipment. The thermal cycle test equipment comprises a high-temperature tank, a low-temperature tank and a circulating pipeline system, wherein the circulating pipeline system comprises a high-temperature medium pipeline connected with the high-temperature tank, a low-temperature medium pipeline connected with the low-temperature tank, and a reflux pipeline used for medium reflux, the high-temperature medium pipeline is provided with a high-temperature pump, a high-temperature connecting pipe is arranged between an outlet of the high-temperature pump and a medium inlet of a test specimen, a high-temperature heat exchange pipe is arranged between the outlet of the high-temperature pump and the high-temperature tank, the low-temperature medium pipeline is provided with a low-temperature pump, a low-temperature connecting pipe is arranged between an outlet of the low-temperature pump and the medium inlet of the test specimen, a low-temperature heat exchange pipe is arranged between the outlet of the high-temperature pump and the low-temperature tank, the reflux pipeline comprises a high-temperature reflux pipeline and a low-temperature reflux pipeline which are arranged in parallel and connected with a medium outlet of the test specimen, the high-temperature reflux pipeline is connected with the high-temperature tank, and the low-temperature reflux pipeline is connected with the low-temperature tank. The invention also discloses a thermal cycle test method. The thermal cycle test equipment and the test method can be used for realizing the rapid change of temperature.

Description

technical field [0001] The invention belongs to the technical field of thermal shock / thermal cycle test, and in particular relates to thermal cycle test equipment and a test method for internal thermal cycle test of a vehicle radiator. Background technique [0002] Such as figure 1 Shown is a structural schematic diagram of an existing heat cycle test equipment. The thermal cycle test equipment includes a high-temperature tank 1, a low-temperature tank 2, and a circulation pipeline arranged between the high-temperature tank 1, the low-temperature tank 2 and the test piece 3. The high-temperature tank 1 and the low-temperature tank 2 are respectively filled with high and low temperature media. In addition, the high-temperature medium and the low-temperature medium are both injected into the test piece 3 through a pump 4. The high-temperature medium pipe and the low-temperature medium pipe are respectively provided with regulating valves 5 for adjusting the flow rate. After p...

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Problems solved by technology

[0004] 1. Since both the high-temperature medium and the low-temperature medium use the same pump 4 to provide circulation power, and the heat exchange between the medium and the pump 4 occurs when the medium passes through the pump, the temperature of the medium injected into the test piece 3 rises and falls relatively gently. The temperature difference is small, and it is impossible to do a severe thermal strain impact test on the product, such as figure 2 shown;

[0005] 2. The thermal cycle test equipment cannot complete thermal cycle and thermal shock tests at temperatures below 0°C and lower;

[0006] Since the vehicle radiator contains components with large differences in thickness, heat storage, and thermal strain, such as fastening water chambers, sealing rings, fins, flat

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