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High temperature plug valve

A valve, high temperature technology, applied in the field of valve production, can solve the problems of lack of online maintenance, insufficient high temperature resistance, short service life, etc., and achieve the effect of short opening and closing time, long life and less consumables

Inactive Publication Date: 2017-11-17
石玉山
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defects of many high-temperature valves are that the high temperature resistance is not high enough, the opening and closing time is too long, the opening and closing torque is too large, there are too many components, the service life is not long, and there is no online maintenance...etc.

Method used

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  • High temperature plug valve
  • High temperature plug valve
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] First, the valve body (1) is mold-cast first, and the passage hole of the fluid is drilled on the upper rotary bed, and the two hexagons at the two ends of the valve body are milled out by a milling machine, and then all the threads on the valve body are processed on a lathe. Then machine the tapered surface of the valve body on a lathe. After getting off the bed, the cone surface has to be ground to a mirror surface precision. The inner wall of the inner cavity of the valve body and the periphery (16) of the metal expansion ring (3) is in contact with each other, and the manufacturing grade is a mirror surface.

[0018] Second, the spool (2) is required to be put on a lathe first, and completed in one cut according to the size. Car pipe thread and two-layer annular groove (9) on the spool, according to the taper of the valve body cavity on the drawing, process the inverted truncated cone (7) of the spool, and then process the fluid passage hole (12). Finally, vertica...

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PUM

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Abstract

The characteristics of this high temperature plug valve: the primary seal and secondary seal of the valve are all metal seals. The metal special-shaped seal of the spool is on the surface of the inverted cone of the spool, the two parts that protrude around the orifices of the two fluid passages are integrated with the spool and made of the same metal material. Once sealed. The two-layer circular groove of the spool cooperates with the two-layer metal expansion ring to form a secondary seal. During the opening and closing process, this kind of high temperature plug valve has the characteristics of high temperature resistance, corrosion resistance, long life, fast speed, online maintenance, and the opening and closing torque is only 1 / 4~1 / 3 of similar products, and can be widely used in high temperature production.

Description

Technical field: [0001] The invention specifically relates to a high-temperature cock valve, which belongs to the technical field of valve production. Background technique: [0002] High temperature valves occupy a certain proportion in the current industrial production process. The defects of many high-temperature valves are that the high temperature resistance is not high enough, the opening and closing time is too long, the opening and closing torque is too large, there are too many components, the service life is not long, and there is no online maintenance...etc. Invention content: [0003] The purpose of the present invention is to overcome the defects of the existing high temperature valves and provide a high temperature plug valve made of different metal materials for all parts of the valve including the seal. [0004] The technical scheme of the present invention is achieved in that the described high-temperature cock valve is composed of a valve body (1), a valv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/12F16K5/16
Inventor 石玉山
Owner 石玉山
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