Pipeline built-in decompressing throttling valve for low-temperature system

Abstract

The invention relates to a pipeline built-in decompressing throttling valve technology for a low-temperature system at the temperature of 200 DEG C below zero. A built-in pipeline valve is adopted, namely the valve is directly arranged in a pipeline through an upper clamp and a lower clamp to realize a decompressing throttling process of low-temperature fluid in the pipeline, a flange or a thread is not needed to be connected, and the aims of non-sealed leakage-free pipeline transport and process control over the low-temperature fluid are fulfilled. By the pipeline built-in decompressing throttling valve, the problem of pipeline leakage caused by damages to a sealing surface due to high mutation possibility of the low-temperature fluid in the pipeline under low-temperature high-pressure working conditions is solved, and the throttling valve is suitable for decompressing and throttling refrigeration processes of the low-temperature fluid in the pipeline and contributes to controlling the pressure and the temperature of the low-temperature fluid in the pipeline, so that a low-temperature phase change transport process is kept relatively stable. The throttling valve also can be used for solving the technical problem brought by dynamic phase change refrigeration of the low-temperature fluid in the pipeline with variable pressure, variable temperatures and variable flow, the phase change refrigeration efficiency of the low-temperature fluid in the pipeline is improved, and the low-temperature fluid in the pipeline is effectively managed.

Description

technical field [0001] The invention relates to a -200°C low-temperature system pipeline built-in decompression and throttling valve technology. By adopting the pipeline built-in valve, the valve is directly installed in the pipeline through the upper and lower clamps to realize the decompression and throttling process of the low-temperature fluid in the pipeline, without the need for flanges Or threaded connection, to achieve the purpose of non-sealed and leak-free pipeline transportation and process control of low-temperature fluid. The built-in decompression and throttling valve in the pipeline solves the problem that the low-temperature fluid in the pipeline is prone to sudden changes in low-temperature and high-pressure conditions, causing damage to the sealing surface and causing pipeline leakage. It is suitable for the decompression and throttling refrigeration process of low-temperature fluid in the pipeline, which is beneficial Low-temperature fluid pressure and tempe...

AI Technical Summary

Problems solved by technology

Under low temperature conditions, the sealing material connected to the pipeline is prone to low temperature brittle fracture, and the sealing surface often leaks, which poses a great safety hazard, especially for flammable and explosive gases, the danger caused by leakage is even greater

Process control equipment will generate strong vibration during throttling and depressurization, which can easily cause sealing leakage of connecting parts. For example, throttling valves rely entirely on vibration to produce cooling effects, etc.

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