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Novel high-temperature flat gate valve

A slab gate valve, high temperature technology, applied in the direction of valve device, valve details, sliding valve, etc., can solve the problems such as prone to jamming, achieve the effect of enhancing high temperature working characteristics and reliability, realizing automatic compensation, effective and reliable sealing

Pending Publication Date: 2020-12-25
JIANGSU PERFECT INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned flat valve has solved certain technical effects, there are still certain problems, and faults such as jamming are prone to occur during use.

Method used

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  • Novel high-temperature flat gate valve
  • Novel high-temperature flat gate valve
  • Novel high-temperature flat gate valve

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] as attached Figure 1-3 As shown, a new high temperature slab gate valve includes an integrated valve body 100, a valve plate 200 arranged inside the valve body 100, a valve cover arranged above the valve body 100 and fixedly connected to the valve body 100 300 . The hand wheel 500 arranged above the valve cover 300 .

[0048] The contact surface between the valve plate 200 and the valve body 100 is provided with a sealing metal surfacing layer 600, and the valve stem 400 is connected above the valve plate 200; the handwheel 500 is fixedly connected to the end of the valve stem 400 away from the valve body 100, Rotating the hand wheel 500 drives the valve stem 400 to rotate, and then drives the valve plate 200 to move up and down, so as to realize the connection and blocking of the through hole of the valve plate 200 and the medium channel of the valve body 100 .

[0049] as attached Figure 4 As shown, the contact surface between the valve plate 200 and the valve bod...

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Abstract

The invention relates to a novel high-temperature flat gate valve. The novel high-temperature flat gate valve comprises a valve body of an integrated structure, a valve plate arranged in the valve body, a valve deck arranged above the valve body and fixedly connected with the valve body, and a hand wheel arranged above the valve deck. A sealing metal surfacing layer is arranged on the contact faceof the valve plate and the valve body, and a valve rod is connected to the upper portion of the valve plate. The hand wheel is fixedly connected with the end, away from the valve body, of the valve rod, the valve rod is driven to move up and down by rotating the hand wheel, and a through hole of the valve plate communicates with and is disconnected from a medium runner of the valve body. Throughreasonable design, an integrated valve body structure, a separated parallel valve plate structure, a structure above the valve deck and extending corresponding to the valve rod, and a sealing filler constant-pressure structure are adopted, so that effective and reliable sealing of the valve body under the action of a high-temperature medium is realized; and automatic compensation for thermal expansion of a valve plate sealing structure, temperature rise control of a sealing area and automatic compensation for sealing filler abrasion are achieved, and the high-temperature working characteristicand reliability of the device are enhanced.

Description

technical field [0001] The invention relates to the technical field of gate valves, in particular to a novel high-temperature flat gate valve. Background technique [0002] High-temperature slab gate valves are mainly used for high-temperature and high-pressure heavy oil and natural gas exploration and smelting processes, nuclear power plant coolants, and chemical product smelting and other high-temperature medium pipelines. [0003] Existing high-temperature flat valves mainly use a wedge-shaped valve plate to achieve sealing through extrusion and expansion of the valve stem. After the valve is heated, thermal expansion is prone to cause seizure. Excessive extrusion sealing force and high-temperature softening of materials will also cause parts to soften and seal. Scratches on the surface will cause the seal to fail and cause leakage. At the same time, the existing high-temperature plate valves have not undergone strict thermodynamics and high-temperature sealing design, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/18F16K3/314F16K27/04F16K27/08F16K41/02F16K49/00
CPCF16K3/18F16K3/029F16K3/0236F16K3/314F16K27/044F16K27/08F16K41/02F16K49/00
Inventor 刘瑶周雯雯戴勇刘爱武陈意柏广才
Owner JIANGSU PERFECT INTELLIGENT TECH CO LTD
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