CN104374293A - Seal shape deviation measuring instrument for pressure vessels - Google Patents
Seal shape deviation measuring instrument for pressure vessels Download PDFInfo
- Publication number
- CN104374293A CN104374293A CN201410738363.5A CN201410738363A CN104374293A CN 104374293 A CN104374293 A CN 104374293A CN 201410738363 A CN201410738363 A CN 201410738363A CN 104374293 A CN104374293 A CN 104374293A
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- China
- Prior art keywords
- longitudinal
- scale
- measuring instrument
- shape deviation
- seal shape
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A seal shape deviation measuring instrument for pressure vessels comprises rulers, and is characterized in that the rulers include a transverse ruler and a longitudinal ruler which are perpendicularly arranged, positioners for limiting and with transverse sensors are arranged on two sides of the transverse ruler, a sliding or rolling contact with a longitudinal sensor is arranged at the bottom end of the longitudinal ruler, and the transverse sensors and the longitudinal sensor are connected with a sensor display screen. By the seal shape deviation measuring instrument for the pressure vessels, operation efficiency as well as measuring accuracy can be improved. The seal shape deviation measuring instrument has the advantages of simplicity and reasonableness in structure, convenience in measuring, low measuring cost, long service life, wide application range and the like.
Description
Technical field
The present invention relates to a kind of two coordinate measurer technical fields, specifically the pressure vessel head form variations surveying instrument of measurement standard end socket form variations.
Background technology
Because end socket belongs to arc surface, therefore the measurement difficulty of end cambered surface is larger, complicated operation, the method of inspection of current pressure vessel head form variations mostly is model and detects, namely check the form variations of ellipse, butterfly, dome head inside surface with the full-scale interior model of band gap, indentation is of a size of 3%D
i~ 5% D
i, its maximum form variations evagination must not be greater than 1.25 D
i, indent must not be greater than 0.625% D
i.Due to make model complicacy and there is error, precision be also difficult to ensure.
Summary of the invention
The object of this invention is to provide a kind of hard contact that adopts and directly contact end socket inside surface, read transverse and longitudinal coordinate figure, to determine the pressure vessel head form variations surveying instrument of the departure of end socket physical size and theoretical size.
The object of the invention is to realize by following technical solution: a kind of pressure vessel head form variations surveying instrument, it includes scale, it is characterized in that: the horizontal scale of orthogonal setting and longitudinal scale, be provided with for spacing and with the locating device of lateral pickup, be provided with slip or the rolling contact of longitudinal sensor in the bottom of longitudinal scale in the both sides of horizontal scale; Described lateral pickup and longitudinal sensor are connected with sensor display screen.
Rolling contact as above is steel-ball type rolling contact.
Horizontal scale is lain against the end of forming head, so when manufacturing end socket, trimming is answered in the end of forming head, as the measuring basis that size shape detects.
Pressure vessel head is placed in detection platform, keeps flat horizontal scale, be positioned end socket inside surface maximum gauge place, adjust longitudinal scale, by contact end socket inside surface, write down the transverse and longitudinal coordinate number of degrees.Longitudinal scale is prolonged transverse shifting, in the right and left point reading numerical values that respectively amount of exhausting is many.Horizontal scale rotates 180 ° of continuation and measures in the same way.
By reading input computer formula, form the pattern of actual product.According to theoretical value, draw theoretical pattern, be of a size of 3%D according to standard indentation
i~ 5% D
i, its maximum form variations evagination must not be greater than 1.25 D
i, indent must not be greater than 0.625% D
i.Draw qualified region, the pattern of actual measurement is put into qualified region, as in qualified region, then meet designing requirement.
This pressure vessel head form variations surveying instrument that the present invention proposes, namely increases work efficiency, can improve testing accuracy again, and there is not been reported can to realize the surveying instrument of above-mentioned purpose at present.
The present invention also has simple and reasonable, and it is convenient to measure, and measures cost low, long service life, the advantages such as range of application is wide.
Accompanying drawing explanation
Fig. 1 is the cut-open view of pressure vessel head form variations surveying instrument.
Main Reference Numerals illustrates: 1. horizontal scale; 2. longitudinal scale; 3. locating device; 4. contact; 5. sensor display screen; 6. support; 7. forming head.
Be described in further detail the present invention by example below in conjunction with accompanying drawing, but following example is only the present invention's example wherein, do not represent the rights protection scope that the present invention limits, the scope of the present invention is as the criterion with claims.
Embodiment
example 1
As shown in Figure 1, in figure 1 is horizontal scale, 2 is longitudinal scale, horizontal scale 1 and the orthogonal setting of longitudinal scale 2, be provided with for spacing and with the locating device 3 of lateral pickup, be provided with the steel-ball type rolling contact 4 of longitudinal sensor in the bottom of longitudinal scale 2 in the both sides of horizontal scale 1; Described lateral pickup and longitudinal sensor are connected with sensor display screen 5.
Measuring process:
(1), be first placed on support 6 by forming head 7, its inside surface is placed upward, and transverse and longitudinal scale 1 is adjusted to zero;
(2), by horizontal scale 1 lie against above the straight section of forming head 7, and tightly contact with end socket, adjustment locating device 3, is positioned horizontal scale 1 for a maximum gauge place, and is fixed formation semi-circular cross-section;
(3), longitudinal scale 2 is adjusted to zero, gets end socket minimum point, steel-ball type rolling contact 4 is contacted the minimum point inside forming head 7, writes down transverse and longitudinal coordinate figure respectively at the tangent plane semi-circular section place chosen;
(4), again centered by first o'clock, on selected semi-circular section, 4 points are respectively chosen in left and right, measure, and record transverse and longitudinal coordinate figure respectively;
(5), utilize PC Tools to draw canonical plotting, be of a size of 3%D according to standard indentation
i~ 5% D
i, its maximum form variations evagination must not be greater than 1.25 D
i, indent must not be greater than 0.625% D
i.Draw the scope of permissible variation and set up the consistent coordinate system of measuring appliance.
(6), by numerical value add in the computing formula of numerical value input computing machine of upper contact radius, draw experiment curv, calculate actual end socket pattern according to normalized form, the actual curve of measurement and permissible variation scope are contrasted.Namely qualified in scope, if not in scope, then overproof.
Claims (2)
1. a pressure vessel head form variations surveying instrument, it includes scale, it is characterized in that: the horizontal scale of orthogonal setting and longitudinal scale, be provided with for spacing and with the locating device of lateral pickup, be provided with slip or the rolling contact of longitudinal sensor in the bottom of longitudinal scale in the both sides of horizontal scale; Described lateral pickup and longitudinal sensor are connected with sensor display screen.
2. pressure vessel head form variations surveying instrument according to claim 1, is characterized in that: described rolling contact is steel-ball type rolling contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738363.5A CN104374293A (en) | 2014-12-08 | 2014-12-08 | Seal shape deviation measuring instrument for pressure vessels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738363.5A CN104374293A (en) | 2014-12-08 | 2014-12-08 | Seal shape deviation measuring instrument for pressure vessels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104374293A true CN104374293A (en) | 2015-02-25 |
Family
ID=52553350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410738363.5A Pending CN104374293A (en) | 2014-12-08 | 2014-12-08 | Seal shape deviation measuring instrument for pressure vessels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104374293A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833304A (en) * | 2015-04-10 | 2015-08-12 | 烟台市特种设备检验研究院 | Inspection instrument for pressure vessel ellipsoidal head based on ellipsograph |
| CN105783805A (en) * | 2015-12-25 | 2016-07-20 | 烟台市特种设备检验研究院 | Apparatus for examining welded joint dimension and cylindrical shell circularity |
-
2014
- 2014-12-08 CN CN201410738363.5A patent/CN104374293A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 刘明智: "封头检验用坐标测量仪", 《石油化工设备》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833304A (en) * | 2015-04-10 | 2015-08-12 | 烟台市特种设备检验研究院 | Inspection instrument for pressure vessel ellipsoidal head based on ellipsograph |
| CN104833304B (en) * | 2015-04-10 | 2018-05-25 | 烟台市特种设备检验研究院 | Pressure vessel ellipsoidal head testing instruments based on ellipsograph |
| CN105783805A (en) * | 2015-12-25 | 2016-07-20 | 烟台市特种设备检验研究院 | Apparatus for examining welded joint dimension and cylindrical shell circularity |
| CN105783805B (en) * | 2015-12-25 | 2018-09-25 | 烟台市特种设备检验研究院 | Welding point size and cylinder roundness testing instruments |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150225 |