A double-wedge movable gate group driven by mechanical and internal pressure

A technology of internal pressure and gate, which is applied in the direction of mechanical equipment, sliding valves, engine components, etc., can solve the problems of reducing the friction between the gate and the valve seat, short service life, easy fracture of the valve stem, etc., and achieve valve stem fracture Reduced risk, improved stability and safety, and extended service life

Active Publication Date: 2020-11-03
ANSHAN SOLENOID VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By adopting this pilot-operated gate group structure, the friction between the gate and the valve seat is reasonably reduced, and the problems of severe gate abrasion, short service life, and easy fracture of the valve stem are solved.

Method used

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  • A double-wedge movable gate group driven by mechanical and internal pressure
  • A double-wedge movable gate group driven by mechanical and internal pressure
  • A double-wedge movable gate group driven by mechanical and internal pressure

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] A double-wedge movable gate group driven by mechanical and internal pressure includes: valve stem 1, spring 2, spring seat 3, positioning sleeve 4, gate body 5, first movable gate 6, pilot gate 7, The first ram ring 8, the second ram ring 9, the valve seat 10 before the valve, the valve seat 11 after the valve and the second movable ram 12; it is characterized in that:

[0036] The pilot gate 7 is inserted from the upper hole of the gate body 5;

[0037] The lower end of the positioning sleeve 4 is inserted from the upper port of the gate body 5, and is fixedly connected between the positioning sleeve 4 and the gate body 5; the lower end of the spring seat 3 is inserted from the upper port of the gate body 5, and the lower end of the spring seat 3 touch Hold the upper end of the positioning sleeve 4, and the spring seat 3 is fixedly connected with the gate body 5;

[0038] The lower end of the spring 2 is against the second surface 16 of the spring seat 3;

[0039] Th...

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PUM

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Abstract

The invention discloses a double-wedge-surface movable wedge disc group driven by a machine and an internal pressure. The double-wedge-surface movable wedge disc group comprises a valve rod, a spring, a spring seat, a locating sleeve, a wedge disc body, a first movable wedge disc, a pilot wedge disc, a valve front valve seat, a pressing plate ring, a second movable wedge disc and a valve rear valve seat. A double-gate movable plate structure is adopted. The opening / closing torque of the whole valve is reduced by controlling the movable wedge discs by the pilot wedge disc, so that the stability and safety of the valve are improved. Hardly any friction force is generated between each movable wedge disc and each valve seat, and because of the contact area of the pilot wedge disc and each movable wedge disc is small, the friction force between the pilot wedge disc and each movable wedge disc is also small and is remarkably reduced as comparison with that of the traditional wedge disc. The pilot wedge disc is hung on the valve rod in a T-shaped slot way so as to be conveniently dismounted and rapidly replaced once the pilot wedge disc is worn.

Description

technical field [0001] The invention belongs to the technical field of fully enclosed electric gate valves used in the primary circuit system of nuclear reactors, and in particular relates to a double-wedge movable gate group driven by machinery and internal pressure. Background technique [0002] The traditional electric gate valve uses the motor and the reduction mechanism to drive the screw to rotate and output torque to lift or push down the fixed gate to realize the opening and closing function of the gate valve. The traditional gate valve adopts a double gate or single gate structure, the gate is directly sealed with the valve seat, and the opening and closing of the gate valve is realized by the opening and closing of the gate. This structure makes the contact area between the gate plate and the valve seat large, and the friction torque is large, which makes the gate plate and the valve seat easy to wear and has a low service life. Moreover, once the valve seat is sev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/14F16K3/314
CPCF16K3/14F16K3/314
Inventor 冯忠海张阳鄂威刘祥孟吴铁陈兴洲贾云霞周天丽
Owner ANSHAN SOLENOID VALVE
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