Ultrahigh-pressure low-temperature gas pressure testing device

Abstract

The invention relates to the technical field of high-pressure testing devices, in particular to an ultrahigh-pressure low-temperature gas pressure testing device. The ultrahigh-pressure low-temperature gas pressure testing device comprises a pressure cylinder and a control device. A lifting mechanism is arranged at the upper end of the pressure cylinder and connected with an upper cover of the pressure cylinder. The upper cover is provided with a sealing mechanism and a vacuum valve. A pressure increasing electromagnetic valve is arranged at the bottom of the pressure cylinder. A cooling hoodis arranged on the outer wall of the pressure cylinder. A flow electromagnetic valve is connected with the inlet end of the cooling hood. A sensing device is arranged in the pressure cylinder. The sensing device, the pressure increasing electromagnetic valve and the flow magnetic valve are connected with the control device through circuits correspondingly. The ultrahigh-pressure low-temperature gas pressure testing device is reasonable in structure, gas is used as a pressure transmitting medium, through a combined structure of a multi-flow-guiding-hole spiral cooling jacket and a plate type honeycomb point jacket, the cooling effect can be adjusted more precisely, the plate type honeycomb point jacket has both the characteristics of large cooling area and high flow speed, and the problemsof temperature compensation and pressure compensation in the pressure increasing and cooling processes of the testing device are solved.

Description

technical field [0001] The invention relates to the technical field of high-pressure test devices, in particular to an ultra-high pressure low-temperature gas pressure test device. Background technique [0002] Traditional one-piece pressure cylinders or frame-type pressure devices (such as cold isostatic presses) generally choose liquid objects such as water, emulsion or oil as the pressure transmission medium to realize the ultra-high pressure state in the working cylinder at room temperature. However, if you choose a liquid pressure transmission medium, it is easy to contain sediment or other foreign matter, which will often cause pollution to the working cylinder and products, and even cause wear and blockage to high-pressure pipelines and high-pressure valves. Although the hot isostatic press uses gas as the pressure transmission medium, its working temperature is often very high, so it can only be used in special working conditions of high temperature and high pressure...

AI Technical Summary

Problems solved by technology

At present, gas as a pressure transmission medium has not been used in the field of cold isostatic pressing technology, mainly because the gas will release a large amount of heat under pressure, resulting in a sharp rise in the temperature in the working cylinder, which will not be able to form a high-pressure and low-temperature working environment, so the use of gas As a pressure transmission medium, it is necessary to consider how to cool down the gas when it is compressed to an ultra-high pressure state. On the one hand, it is necessary to achieve high pressure, and on the other hand, it is necessary to maintain a low temperature state.

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