A precision connecting flange

A technology for connecting flanges and flanges, applied in the direction of flange connections, pipes/pipe joints/fittings, passing components, etc., can solve the problem that the precision of flanges cannot reach high-end precision instruments, etc., to improve the reaction effect and response The effect of speed and precision improvement

Active Publication Date: 2021-04-09
山西昊坤法兰股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the technical problem that the precision of the flange in the prior art cannot meet the requirements of high-end precision instruments, the present invention proposes the following technical solutions from the perspective of improving the roughness of the flange contact surface:

Method used

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Effect test

Embodiment 1

[0026] A precision connection flange includes a first flange, a second flange, a sealing gasket, fastening bolts and nuts, the sealing gasket is arranged between the first flange and the second flange, and the first Corresponding positions of the first flange and the second flange are respectively provided with pipe receiving holes, and corresponding positions of the first flange and the second flange are respectively provided with fastening through holes, and the fastening bolts pass through the first The fastening through holes of the flange and the second flange are threadedly connected with the nut, the fastening through holes are waist-shaped holes, and the fastening through holes of the first flange and the second flange are four respectively. , the four fastening through holes are symmetrically arranged in pairs, and the corresponding positions of the first flange and the second flange are respectively uniformly provided with four tube receiving holes; the first flange a...

Embodiment 2

[0032] A precision connection flange includes a first flange, a second flange, a sealing gasket, fastening bolts and nuts, the sealing gasket is arranged between the first flange and the second flange, and the first Corresponding positions of the first flange and the second flange are respectively provided with pipe receiving holes, and corresponding positions of the first flange and the second flange are respectively provided with fastening through holes, and the fastening bolts pass through the first The fastening through holes of the flange and the second flange are threadedly connected with the nut, the fastening through holes are waist-shaped holes, and the fastening through holes of the first flange and the second flange are four respectively. , the four fastening through holes are symmetrically arranged in pairs, and the corresponding positions of the first flange and the second flange are respectively uniformly provided with four tube receiving holes; the first flange a...

Embodiment 3

[0038] A precision connection flange includes a first flange, a second flange, a sealing gasket, fastening bolts and nuts, the sealing gasket is arranged between the first flange and the second flange, and the first Corresponding positions of the first flange and the second flange are respectively provided with pipe receiving holes, and corresponding positions of the first flange and the second flange are respectively provided with fastening through holes, and the fastening bolts pass through the first The fastening through holes of the flange and the second flange are threadedly connected with the nut, the fastening through holes are waist-shaped holes, and the fastening through holes of the first flange and the second flange are four respectively. , the four fastening through holes are symmetrically arranged in pairs, and the corresponding positions of the first flange and the second flange are respectively uniformly provided with four tube receiving holes; the first flange a...

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Abstract

The present invention relates to a precision connecting flange, comprising a first flange, a second flange, a sealing gasket, fastening bolts and nuts, the sealing gasket is arranged between the first flange and the second flange, Corresponding positions of the first flange and the second flange are respectively provided with pipe accommodation holes, and corresponding positions of the first flange and the second flange are respectively provided with fastening through holes, and the fastening bolts are in turn The fastening through holes passing through the first flange and the second flange are threadedly connected with the nuts. The precision connecting flange of the invention has the advantages of smooth surface, low crack rate, good sealing performance, etc., and can meet the requirements of high-precision equipment.

Description

technical field [0001] The invention relates to a precision connecting flange. Background technique [0002] During the operation of chemical equipment, the flange connection should meet the strength requirements and sealing performance requirements while ensuring convenient replacement and low cost. PVRC divides the tightness level of equipment into 5 levels: economical type T1, standard type T2, compact type T3, tight type T4 and extremely dense type T5. The division is based on the unit mass leakage rate L value. [0003] When the flange connection structure is installed or pre-tightened, the flange plate will squeeze the gasket on the flange pressing surface under the action of the bolt load. When the pre-tightening load on the contact surface of the sealing gasket When a certain standard value is reached, with the help of the deformation of the gasket, the small unevenness on the contact surface of the flange is filled by the gasket sealing material. At this time, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L23/032F16L23/18F16L23/036C09G1/02
Inventor 韩芳
Owner 山西昊坤法兰股份有限公司
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