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A valve sealing arrangement and a valve seat

A valve sealing and valve seat technology, applied in the field of valve sealing devices and valve seats, can solve the problems of uneven contact pressure distribution, valve leakage, inability to adapt to surface displacement, etc.

Pending Publication Date: 2020-12-11
NELES FINLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One problem with the described valve arrangement is that during operation the working pressure on the components can displace and deform the surfaces of the components relative to each other
Traditional metal bellows seats are often unable to accommodate surface displacement
This can lead to an uneven contact pressure distribution on the sealing surface, or even to no longer contacting the sealing surface, which can in turn lead to valve leakage

Method used

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  • A valve sealing arrangement and a valve seat
  • A valve sealing arrangement and a valve seat
  • A valve sealing arrangement and a valve seat

Examples

Experimental program
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Embodiment Construction

[0010] figure 1 An overall cross-sectional view of the valve arrangement is shown. As an example, figure 1 The valve in is a ball valve. figure 1 Valve body 1 , closure member 2 and valve seat 3 are shown. Valve seat 3 is made of metal. The valve seat 3 is positioned such that it is in contact with both the valve body 1 and the closure member 2 to prevent leakage around the valve seat. exist figure 1 In , the valve seat is only positioned on one side of the closure member. Alternatively, the valve arrangement may comprise valve seats on both sides of the closure member.

[0011] figure 2 A cross-sectional view of a first embodiment of a valve seal with a valve seat 3 and a section of a closure member 2 is shown. The valve seat 3 includes a central axis 4; a sealing portion 5 having a first sealing surface 8 for contact with the closure member 2; and a rear sealing portion 7 having a contact with the valve body. The second sealing surface 9 that contacts the inner sur...

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PUM

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Abstract

This invention relates to a valve sealing arrangement, comprising a valve body (1), and a closing member (2) comprising a closing member contact surface (18), and a seat (3), having a center axis (4),and provided with a sealing portion (5) with a first sealing surface (8) for making contact with the closing member (2) and a back sealing portion (7) with a second sealing surface (9) for making contact with a surface of the valve body (1). The seat (3) is further provided with a bellows (6) be- tween the first sealing surface (8) and the second sealing surface (9) wherein the bellows (6) comprises bellow members wherein adjacent bellow walls form either inwardly open fold (32) or outwardly open fold (33) and wherein one or more of the bellow members (10) extends in a direction that is oblique to the center axis (4) of said seat (3).

Description

technical field [0001] The invention relates to a valve sealing device and a valve seat. Background technique [0002] A valve device is known in which a valve body is provided with a flow channel, a closure member and a valve seat. A valve seat is disposed inside the valve body and bears against the closure member to provide a tight fit connection. A typical seat type is the bellows seat. [0003] One problem with the described valve arrangement is that during operation, the working pressure on the components can displace and deform the surfaces of the components relative to each other. Traditional metal bellows seats are often unable to accommodate surface displacement. This can lead to an uneven contact pressure distribution on the sealing surface, or even to no longer contacting the sealing surface, which can in turn lead to valve leakage. Contents of the invention [0004] The object of the invention is to provide a solution by which the tightness of the valve can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/16F16K1/42F16K1/14
CPCF16K5/0663F16K5/20F16J15/3472F16J15/36F16K5/0689F16K5/207F16K5/0668
Inventor T·贝里斯特姆P·斯科特A·奎图宁
Owner NELES FINLAND OY