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Ultra-low temperature ball valve

A technology for ultra-low temperature and ball valves, applied in valve details, valve devices, shaft seals, etc., can solve the problems that rubber O-rings cannot be used at minus 196°C, rubber O-rings cannot withstand high temperatures or ultra-low temperatures, and cannot withstand switches, etc. , to achieve the effect of novel structure design, long service life and excellent performance

Inactive Publication Date: 2010-06-16
KUSN WEISA VALVE
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] We know that ball valves are widely used in various fields such as petroleum, chemical industry, steel, metallurgy, and electric power. The existing ball valves are generally filled with rubber O-rings or graphite fillers between the valve seat and the valve cover, and between the packing gland and the valve stem. Sealing, rubber O-rings cannot withstand high temperature or ultra-low temperature, although graphite can withstand high and low temperature, it cannot withstand switching, if the number of switching is too many, it will leak after a long time
As an elastic sealing element, it is widely used in the valve manufacturing industry, but the existing rubber O-ring cannot be used at minus 196°C

Method used

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specific Embodiment approach

[0018] figure 1 It is a structural schematic diagram of an embodiment of the present invention.

[0019] like figure 1 Shown: ultra-low temperature ball valve, including valve body 6, valve cover 1, valve seat 3, ball 4, valve stem 10, three-way handle 16 and handle steel pipe 17, wherein ball 4 is located in the middle of valve body 6, valve cover 1 is located in the valve The two sides of the body 6 are fixedly connected with the valve body 6 by bolts, and the valve seat 3 is arranged between the valve cover 1 and the ball 4, and the retaining ring 2, the valve seat spring 8 and the resistance Pressure sealing ring 9 at minus 196°C, in which seat spring 8 is located between retaining ring 2 and valve cover 1, while pressure sealing ring 9 is located between retaining ring 2 and valve seat 3, between valve seat 3 and ball A sealing ring 7 resistant to a low temperature of minus 196° C. is arranged between the 4 to achieve double sealing, and the lower part of the sphere 4 i...

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Abstract

The invention discloses an ultra-low temperature ball valve, comprising a valve body, a valve cover, a valve seat, a ball body, a valve rod, a tee handle and a handle steel tube, wherein the ball body is located at the middle of the valve body, the valve cover is located at both sides of the valve body, the valve seat is arranged between the valve body and the ball body, the lower part of the valve rod is connected with the ball body through the valve body, the upper part of the valve rod is connected with the tee handle, the tee handle is connected with the handle steel tube, and the lower part of the ball body is further connected with a pivot. The ultra-low temperature ball valve is characterized in that: the outside of the valve rod is provided with a filling gland, the lower end of the filling gland is simultaneously connected with the valve body, a valve rod filler is further arranged between the filling gland and the valve rod, and the upper part of the valve rod filler is sequentially provided with a press ring and a disc spring. In the invention, the structure design is novel, and the used sealing material has excellent performance. Due to the characteristics of good stability, long service life and the like, zero leakage of the interior and the outside of the ball valve is achieved. The invention is mainly applied to the ultra-low temperature environment with working temperature within the range of -196 DEG C to -50 DEG C.

Description

technical field [0001] The invention relates to a valve, in particular to a ball valve capable of resisting ultra-low temperature, and belongs to the field of mechanical manufacturing. Background technique [0002] We know that ball valves are widely used in various fields such as petroleum, chemical industry, steel, metallurgy, and electric power. The existing ball valves are generally filled with rubber O-rings or graphite fillers between the valve seat and the valve cover, and between the packing gland and the valve stem. Sealing, the rubber O-ring cannot withstand high temperature or ultra-low temperature, although graphite can be high and low temperature, it cannot withstand the switch, if the number of switches is too many, it will leak after a long time. As an elastic sealing element, it is widely used in the valve manufacturing industry, but the existing rubber O-ring cannot be used at minus 196 °C. Contents of the invention [0003] In order to overcome the defic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/08F16K41/02F16K41/04
Inventor 张国明
Owner KUSN WEISA VALVE
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