A stretchable dynamic sealing device for high temperature and high pressure environment

Abstract

The invention discloses a stretchable dynamic sealing device for high-temperature and high-pressure environments. The stretchable dynamic sealing device comprises a stretching rod and a sensor, wherein the sensor is connected with the stretching rod; a shaft sleeve is sleeved on the outer side of the stretching rod; a sealing device is arranged between the head end of the shaft sleeve and the stretching rod; the stretchable dynamic sealing device further comprises a force-counteracting device used for counteracting acting forces to the stretching rod, generated by the high-pressure environment. On the basis of the comprehensive consideration for the influences of high-temperature and high-pressure environments on the stretching device, the device is equipped with the force-counteracting device used for counteracting the acting forces to the stretching rod generated by different pressures; the device is used for performing tensile test on a sample in a kettle under the high-temperature and high-pressure environments and finishing the test for the stress damage sensitivity under the complex environment; a cooling system, in which a spiral radiating ring is combined with a coolant, is adopted by the device; the heat transfer area of the heat energy can be increased by the radiating ring; the coolant spirally flows by the radiating ring; the coolant path is free from dead angle; the contact area between the coolant and the radiating ring is large; the radiating efficiency is greatly increased, so that an O-shaped ring for sealing is protected.

Description

technical field [0001] The invention relates to a dynamic sealing device for testing the stress damage sensitivity of a combination of metal and environment in a complex environment of high temperature and high pressure when inspecting the stretching or slow stretching properties of materials, and specifically relates to a Stretchable dynamic sealing device for high temperature and high pressure environment. Background technique [0002] With the rapid development of my country's energy industry, the service environment of equipment in petroleum, chemical and other industries is becoming more and more harsh, and equipment serving in complex corrosion environments is becoming more and more common. It is especially important to investigate the performance of equipment materials in complex environments. The test in the high temperature and high pressure environment is carried out in the laboratory, usually in the high temperature and high pressure reaction kettle. The stress fa...

AI Technical Summary

Problems solved by technology

At present, there are mature related equipment in foreign countries, which are expensive; domestic products still have related defects, such as: the extra force generated by different pressures on the stretching rod, which leads to the defect that the sensor measurement is not accurate enough, etc.

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