Device for solving valve faults in space division system and operation method

Abstract

The invention discloses a device for solving valve faults in a space division system and an operation method thereof. The device comprises a first stop valve (1), a first decompression valve (2), a first pressure meter (3) and a valve air cylinder (4) which are sequentially connected in series, wherein one path of instrument pipe is further serially connected between the first pressure meter (3) and the valve air cylinder (4) through a tee joint; one path of the serially-connected instrument pipe comprises a second stop valve (5), a second pressure meter (6), a second decompression valve (7), a third pressure meter (8) and an external air source (9) which are sequentially connected in series; and the external air source (9) is located at the tail end of a pipeline. The device for solving the valve faults in the space division system does not influence normal work of the other valves through a newly-increased air source supply manner when a large-sized valve works insensitively or is clamped, so that the broken valve can work normally and the influences of stopping an oxygen generator due to the valve faults are eliminated.

Description

technical field [0001] The invention relates to an air separation device, in particular to a device and an operation method for solving gas path failures in larger valves or valves without manual operation in the air separation system. Background technique [0002] "Air separation unit or air separation system" is a technical term in this field, which refers to the equipment system for extracting oxygen, nitrogen, argon and other gases by cryogenic rectification, also called oxygen generator system. A large number of pneumatic valves are used in the air separation system. For large and medium valves with a diameter of 800cm or more, due to the large diameter, high precision, and complicated process of such valves, they are not equipped with manually adjustable handwheels. Therefore, once a failure occurs, it often brings difficulties to maintenance and repair, and it is difficult to eliminate it in a short period of time. Moreover, with the increase of the service life of th...

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Problems solved by technology

However, there are hundreds of valves in the system. Due to the high cost of such spare parts and the long order cycle, it is impossible to order all of them in a short period of time, and there is no replacement condition during the production period. Therefore, this problem has not been effectively solved.

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