An installation structure of a center type wafer butterfly valve and a center type wafer butterfly valve
A technology of wafer butterfly valve and installation structure, which is applied to the installation structure of central wafer butterfly valve and the field of central wafer butterfly valve. It can prevent the deformation of the butterfly valve from becoming too large, prevent the butterfly valve from increasing the operating torque or fail to open, and ensure the sealing effect.
Active Publication Date: 2021-11-23
GUANGZHOU SHIPYARD INTERNATIONAL LTD
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Problems solved by technology
[0003] When the pipeline system and the valve body need to be disassembled for inspection or replaced in the later stage, the gap between the connecting flanges of the pipeline will become larger due to stress release or other reasons, making the valve body unable to be installed
At this time, there are two conventional methods, one is to change or replace the pipeline connected to the butterfly valve, but this method has the problems of long cycle of changing or changing the pipeline, large material consumption and heavy workload; It is to add sealing gaskets between the butterfly valve and the connecting flanges at both ends for adjustment, but after the installation is tightened, the deformation of the sealing rubber inside the butterfly valve may increase, resulting in an increase in the operating torque required by the butterfly valve or Unable to open
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[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product is used. Certain orientations, constructed and operative in certain orientations, therefore are not to be construed as limitations on the invention. In addition, the terms "first" and "second" are only used for descriptive purposes, or for distinguishing different structures or components, and should not be understood as indicating or...
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The invention relates to the technical field of marine pipeline design and installation, in particular to an installation structure of a center-type wafer butterfly valve and the center-type wafer butterfly valve. The installation structure of the center-type wafer butterfly valve provided by the present invention includes a hard gasket and a soft gasket. The soft gasket is made of elastically deformable materials, and the connection method is compensated by the hard gasket and the soft gasket. The gap between the flanges can be installed without modifying or replacing the pipeline, and the installation of the center wafer butterfly valve can be realized; When contacting each other, the hard gasket cannot further squeeze the sealing rubber, so as to prevent the excessive deformation of the sealing rubber and avoid the situation that the operating torque of the butterfly valve increases or cannot be opened; by setting the soft gasket Between the hard gasket and the inner wall of the connecting flange, the sealing effect can be guaranteed.
Description
technical field [0001] The invention relates to the technical field of marine pipeline design and installation, in particular to an installation structure of a center-type wafer butterfly valve and the center-type wafer butterfly valve. Background technique [0002] The installation structure of the center wafer butterfly valve is mainly composed of valve body, sealing rubber, valve disc, valve shaft and valve operating device. It has simple structure, small size, light weight, convenient operation and good control of fluid. It is very suitable for use on some large-diameter piping systems. Therefore, it is widely used in petrochemical, water treatment, shipbuilding and offshore industries. The installation structure of the center wafer butterfly valve usually relies on the extrusion between the sealing rubber lining the inner side of the valve body and the valve disc to realize the control and closure of the pipeline flow. The valve body protrudes slightly to act as a sea...
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IPC IPC(8): F16K1/226F16K27/02F16L23/16F16L23/18
CPCF16K1/226F16K27/0218F16L23/165F16L23/18
Inventor 包霖张友智罗志农江海涛
Owner GUANGZHOU SHIPYARD INTERNATIONAL LTD