Special corrugated pipe stop valve for chlorine gas

Abstract

The invention provides a special corrugated pipe stop valve for chlorine gas and relates to the field of special valves. The special corrugated pipe stop valve comprises a valve body, a valve rod, a valve clack, a valve seat and a valve cover, wherein the valve body comprises an inlet, an outlet and a middle mounting opening, the inlet and the outlet are separately provided with connector flanges, the middle mounting opening is provided with a middle flange, and the valve cover is fixedly connected with the middle flange through a flange, a bolt and a nut; the middle in the valve body is connected with the valve seat through a channel partition board, the valve rod is mounted through the valve cover, the valve clack is fixedly connected at the inner end of the valve rod, the valve clack is closely fitted with the valve seat, a filler sealing mechanism is arranged between the valve rod and the upper end part of the valve cover, and the outer end of the valve rod is connected with a valve rod lifting mechanism; and a corrugated pipe assembly is arranged in the valve body, the corrugated pipe assembly is arranged on the valve rod in a sleeving manner, the corrugated pipe assembly comprises a corrugated pipe and a partition board, the corrugated pipe and the partition board are both made from metal steel, the partition board is welded to the upper end of the corrugated pipe, one circle of concave opening is formed in an inner opening of the middle flange, the partition board is placed in the concave opening, and the lower end of the corrugated pipe is hermetically welded with the valve clack. The valve is free of leakage, high in strength and long in service life.

Description

technical field [0001] The invention relates to the field of special valves, in particular to the technical field of manufacturing a globe valve for chlorine gas. Background technique [0002] The bellows globe valve for chlorine gas is mainly used in the chlorine gas and liquid chlorine working conditions of chlor-alkali chemical enterprises in the chemical industry, and on the pipelines of enterprises using chlorine gas and liquid chlorine to connect or control the flow of the medium. At present, there are two forms of this type of valve in China, the standard of the European Chlorine Association and the national standard. However, this standard valve is not suitable under certain working conditions, and there will be problems such as leakage, easy corrosion, short service life, and cumbersome installation. . Contents of the invention [0003] In order to overcome the defects of the existing valves, the invention provides a bellows stop valve for chlorine gas. [0004]...

AI Technical Summary

Problems solved by technology

At present, there are two forms of this type of valve in China, the standard of the European Chlorine Association and the national standard. However, this standard valve is not suitable under certain working conditions, and there will be problems such as leakage, easy corrosion, short service life, and cumbersome installation.

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