Examination test device and method for ultrahigh-temperature high-pressure stop valve

Abstract

The invention discloses an examination test device and method for an ultrahigh-temperature and high-pressure stop valve. According to the test device, a stop valve test piece consistent with an actualultrahigh-temperature and high-pressure stop valve in characteristic is designed; an oxygen-enriched combustor, an adjustable spray pipe, a rectification measuring pipe, an exhaust pressure supplementing spray pipe, a temperature measuring point and a pressure measuring point are matched with one another to examine the stop valve test piece under a high-temperature and low-pressure working condition, a high-temperature and high-pressure and high-temperature and low-pressure switching working condition and a high-temperature and high-pressure working condition; the oxidation resistance, thermal protection reliability, high-temperature and high-pressure sealing and opening and closing response characteristics of the high-temperature and high-pressure stop valve under different thermal loadtypes are effectively simulated.

Description

technical field [0001] The invention relates to a valve assessment and testing device and method, in particular to a testing and testing device and method for high-temperature and high-pressure valves. Background technique [0002] In the high-temperature regenerative heater system, the ultra-high-temperature and high-pressure cut-off valve is used to realize the heater preheating and control of the intake and exhaust of the operation, and directly controls the operation of the system. One of the key equipment of the hole, the working conditions of the ultra-high temperature and high pressure globe valve are very harsh, the ambient temperature is as high as 1900K, and the ambient pressure is as high as 6MPa. [0003] The working principle of the high-temperature and high-pressure cut-off valve is: before the start of the wind tunnel experiment, the high-temperature and high-pressure cut-off valve is used to cut off the high-temperature gas in the heater to provide conditions...

AI Technical Summary

Problems solved by technology

[0004] Since the ultra-high temperature and high pressure globe valve works in a high temperature, high pressure and oxygen-enriched environment, the valve is prone to problems such as ablation and oxidation; the sealing material of the valve is not easy to replace, so it is prone to seal failure problems; high pressure environment, large temperature difference between internal and external environments It may lead to deformation of the valve structure and excessive pressure loss; it is also difficult to evaluate the impact of particles and dust in the regenerative heater on the valve during use, and the regenerative heater will exceed The high temperature and high pressure globe valve works in a high temperature and low pressure heat radiation environment for a long time, and the valve has thermal protection problems

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