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Gas spring for sliding refractory gate valve

A technology of gas spring and gate valve, which is applied in the direction of spring, spring/shock absorber, shock absorber-spring combination, etc. It can solve the problems of large applied force and failure to allow the sliding mechanism to work, and achieve compact design and prevent leakage Effect

Active Publication Date: 2016-02-10
NUTBERRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For some mechanisms, the force exerted by the gas spring at high temperature is too great to allow the sliding mechanism to work

Method used

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  • Gas spring for sliding refractory gate valve
  • Gas spring for sliding refractory gate valve
  • Gas spring for sliding refractory gate valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] refer to figure 1 , the exemplary gas spring 10 includes a metal tube 22 onto which a base 24 and a guide sleeve 26 are welded to define the container 12 . A plunger 28 extends through a bore in guide sleeve 26 . Stainless steel bellows 30 is welded at one end to guide sleeve 26 and at the other end to plunger 28 , thereby defining a closure or seal with plunger 28 , metal tube 22 , base 24 and guide sleeve 26 outside bellows 30 and inside container 12 space14.

[0025] The base 24 is provided with an injection hole 32 and a valve 34, whereby the closed space can be filled under pressure with an inert gas 33, such as nitrogen. Gases are represented by dots in the diagram.

[0026] During use, gas pressure acts upwardly on the plunger 28, as shown in the figures.

[0027] The plunger 28 has a circumferential stop 36 for figure 1 The direction shown upwards limits the maximum extension of the plunger.

[0028] The base 24 is provided with a threaded bore 38 that rec...

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PUM

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Abstract

A gas spring (10) for a sliding fire-resistant gate valve, comprising: a container (12), a plunger (28) extendable relative to the container, one end connected to the plunger, and the other end connected to a part of the container Bellows (30), inside said container and outside said bellows, gas (33) for compressing said bellows and stretching said plunger, wherein said plunger has an inner blind hole (49) , a mechanical compression spring (46) is disposed at least partially in said bore to interpose said plunger and said container, and also serves to extend said plunger.

Description

technical field [0001] The invention relates to a gas spring for a sliding fire-resistant gate valve. Background technique [0002] Gas springs (also known as TDE (ThermoDynamic Element)) are used in sliding gate valve mechanisms that control the flow of molten steel during continuous casting. Springs inside the mechanism are used to clamp together the face-to-face opposing sliding refractory panels. Each plate has a hole in the middle; when the two holes are aligned, the flow of molten steel is maximum. The hole diameter increases or decreases according to the position of these plates, thus determining the flow of molten steel. [0003] The springs have to provide enough force to keep the molten steel out of the way between these plates (known as flashing), which can cause the molten steel to leak, which is extremely dangerous and expensive. The sliding of the refractory board is powered by hydraulic pressure. [0004] A gas spring (TDE) basically consists of a metal pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/40F16F13/00
CPCB22D41/40F16F9/0209F16F13/002
Inventor 安东尼·鲁伯特·蒙特贝洛
Owner NUTBERRY
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