Low temperature regulating valve

Abstract

The invention relates to a low-temperature regulating valve. Sleeves are fixedly installed in a valve body. A valve element is installed in the sleeves in a sliding manner. A spring energy storage seal ring is arranged between the outer wall of the valve element and the inner walls of the sleeves. A supporting sleeve is fixedly installed on the sleeves. A seal base is fixedly installed on the supporting sleeve. A corrugated pipe part is fixedly installed on the lower surface of the seal base and is arranged in the supporting sleeve. An upper valve deck is fixedly installed on the seal base. A seal ring is arranged between the upper valve deck and the seal base. The bottom of the upper valve deck is shaped like a barrel. A valve rod is fixedly installed on the valve element and sequentially penetrates the sleeves, the corrugated pipe part, the seal base and the upper valve deck. A valve rod seal ring is arranged between the seal base and the valve rod. A packing assembly is arranged between the upper valve deck and the valve rod. An isolation barrel part is arranged on the supporting sleeve in a sleeving manner and is fixedly connected with the valve body and the upper valve deck. By means of the low-temperature regulating valve, the sealing performance of the valve is improved, the installation space is saved, the deformation of the valve rod is very small, the sealing performance is excellent, and the service life of the valve is long.

Description

technical field [0001] The invention relates to the technical field of low temperature valves, in particular to a low temperature regulating valve. Background technique [0002] With the continuous development of my country's low-temperature industry and the wide application of low-temperature media such as liquefied petroleum gas, liquefied natural gas, liquid oxygen, liquid nitrogen, and liquid ammonia, cryogenic valves have received more and more attention. These media are used in production, processing, transportation and storage. A large number of low-temperature valves are needed, and most of the low-temperature valves used in low-temperature equipment are imported. In the field of low-temperature industrial automation control in my country, it is difficult to meet the normal, safe and reliable conditions of low-temperature equipment due to the limitation of the sealing and reliability of valves. running. [0003] At the same time, low-temperature valves generally adopt...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to overcome the low temperature valves in the prior art generally adopting a long and high neck structure, the installation space of the valve is too large, and the operating equipment often needs to reserve a large enough space, which causes great difficulties to the installation

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