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Method for measuring shape deviation of ellipsoidal seal head

A measurement method, ellipsoid technology, applied in the field of measurement, can solve the problems of inconvenient operation and high cost of head measurement, and achieve the effects of simplifying and cumbersome, avoiding measurement errors and high measurement efficiency

Active Publication Date: 2021-06-11
SHANXI YANG MEI CHEM IND MACHINERY
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Problems solved by technology

[0003] The invention aims to solve the technical problems of high cost and inconvenient operation of the existing head measurement

Method used

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  • Method for measuring shape deviation of ellipsoidal seal head
  • Method for measuring shape deviation of ellipsoidal seal head
  • Method for measuring shape deviation of ellipsoidal seal head

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Embodiment Construction

[0040] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0041] refer to Figure 1 to Figure 2 , a method for measuring the shape deviation of an ellipsoidal head of the present invention comprises the following steps in turn:

[0042] 1) Place the end face of the ellipsoidal head upward on the ground, make the end face parallel to the ground, and support and fix it;

[0043] 2) Select multiple projection positions along a center line of the end face of the ellipsoidal head, and the projection points on the inner wall of the ellipsoidal head vertically correspond to each projection position;

[0044] 3) Measure the first proje...

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Abstract

The invention relates to a measurement method, in particular to a method for measuring shape deviation of an ellipsoidal head, and aims to solve technical problems of high measurement cost and inconvenience in operation of an existing ellipsoidal head. According to the method, a plurality of positions of a center line of an end face of an oval end socket are selected for projection, projection distances in the vertical direction and the horizontal direction are detected, coordinates of each projection point and a corresponding point can be obtained by combining a theoretical curve equation of the end socket, the concave-convex condition and the specific deviation value of the seal head corresponding to each projection point position are obtained, and maximum shape deviation of the seal head and the simulated contour of the seal head are finally obtained.

Description

technical field [0001] The invention relates to a measuring method, in particular to a measuring method for the shape deviation of an ellipsoidal head. Background technique [0002] The head is the most critical part of the pressure vessel, and the ellipsoidal head is one of the most commonly used heads. The ellipsoidal head is a structure formed by adding a cylindrical body with the same diameter at the circular plane of the half ellipsoidal shell. times. After the head is made, it needs to be measured to detect the shape deviation of the head. At present, it is generally necessary to make a head sample, which is made according to the standard graphic size and the size is smaller than the internal size of the head. When measuring, the head sample is placed in the head, and the gap between the head and the head sample is measured. The shape deviation of the head. Heads of different specifications need to prepare head templates of corresponding sizes. In order to meet the...

Claims

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Application Information

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IPC IPC(8): G01B5/20
CPCG01B5/20
Inventor 段晓健李英杰咸耀龙杨宇仙笑笑宋宇光
Owner SHANXI YANG MEI CHEM IND MACHINERY
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