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Nuclear class I pneumatic stop valve

A technology of pneumatic shut-off valve and pneumatic device, which is applied in the direction of lift valve, valve details, valve device, etc., and can solve problems such as difficulty

Inactive Publication Date: 2012-07-25
DALIAN DAGAO VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the working medium of the valve contains radioactive elements, it is difficult to ensure zero leakage and require the valve to be able to open and close quickly.

Method used

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  • Nuclear class I pneumatic stop valve
  • Nuclear class I pneumatic stop valve
  • Nuclear class I pneumatic stop valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] exist figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 In the structural diagram of the first-level nuclear pneumatic globe valve shown, its main structure includes: the valve body 1 and the valve cover 2 are connected by threads, the wound gasket 3 is placed, and a lip is set at the junction of the valve body 1 and the valve cover 2. Welding structure, the packing pressure plate 4 is provided with a first disc spring 5, the valve is driven by a pneumatic device 6, which can be quickly opened and closed within 10s, the supporting column 7 supports the pneumatic device 6, and the connecting rod 12 of the pneumatic device is combined with the valve stem 9 A second disc spring 11 is provided at the place, and the positioning pin 10 is connected with the valve stem 9 and the valve disc 8 .

[0012] Working principle of the present invention: the valve can be used in the reactor coolant system, safety injection system, waste heat export system, main steam system, ...

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PUM

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Abstract

A nuclear class I pneumatic stop valve is characterized in that a valve body is in threaded connection with a valve bonnet, a spiral wound gasket is placed, a lip welding structure is arranged at the joint of the valve body and the valve bonnet, first belleville springs are arranged on a padding pressing plate, the valve is driven by a pneumatic device and can be opened and closed quickly within 10s, supporting columns are used for supporting the pneumatic device, a second belleville spring is arranged at the joint of a pneumatic device connecting rod and a valve rod, and a positioning pin is connected with the valve rod and a valve clack.

Description

technical field [0001] The invention relates to a shut-off valve, in particular to a nuclear primary pneumatic shut-off valve. Background technique [0002] Conventional globe valves are usually composed of valve body, bonnet, valve disc, valve stem, middle flange bolts, valve stem nuts and handwheels. or electric drive. The valve body and the bonnet are connected together by the middle flange bolts, turning the handwheel or starting the electric device drives the valve stem nut to rotate, and the valve stem nut drives the valve stem and valve disc to move up and down through the trapezoidal thread, so as to realize the opening and closing of the valve , to achieve the role of blocking and circulating media. Since the working medium of the valve contains radioactive elements, it is difficult to ensure zero leakage and require the valve to be able to open and close quickly. Contents of the invention [0003] In view of the defects in the prior art, the object of the pre...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K31/12F16K27/02F16K27/12F16K27/10
Inventor 孟祥君陈建波
Owner DALIAN DAGAO VALVE
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