CN203364739U - Measuring instrument for tube body ovality - Google Patents
Measuring instrument for tube body ovality Download PDFInfo
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- CN203364739U CN203364739U CN 201320490695 CN201320490695U CN203364739U CN 203364739 U CN203364739 U CN 203364739U CN 201320490695 CN201320490695 CN 201320490695 CN 201320490695 U CN201320490695 U CN 201320490695U CN 203364739 U CN203364739 U CN 203364739U
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- round ball
- ovality
- semi
- rigidity semi
- surveying instrument
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Abstract
The utility model discloses a measuring instrument for tube body ovality, comprising a rigid semi sphere, a contact end and a scale micrometer, wherein the contact end and the scale micrometer are respectively arranged on two ends of the semicircle of the rigid semi sphere; the measuring direction line of the scale micrometer and the contact end are on a straight line, and the straight line pass through the circle center of the rigid semi sphere; and the diameter of the rigid semi sphere equals to the sum of a distance between the contact end and the rigid semi sphere, a distance between a measuring contact of the scale micrometer and the rigid semi sphere, and the diameter of a measured tube body. The measuring instrument has the advantages of portable application, simple structure, high precision and high measuring efficiency, and can reduce the labor intensity; and the measuring instrument for tube body ovality is wide in detection coverage, can cover the steel tube ovality of all specifications and tube diameters, and solves the measuring difficulty of tube body ovality.
Description
Technical field
The utility model relates to steel pipe manufacturing Instrument technology field, especially relates to a kind of surveying instrument of body ovality.
Background technology
In prior art, oil gas conveying steel pipe body ovality is less than for caliber
following steel pipe, because caliber is little, manually be difficult to creep into steel pipe inner wall usually, measures difficulty, there is no so far measuring method or instrument head it off preferably, and be more than or equal to for caliber
steel pipe, usually employing manually pierces steel pipe inner wall and adopts micrometer inside caliper or tape measure, labour intensity is large, the tape measure error is larger, and two terminations of micrometer inside caliper are difficult to guarantee on same level, easily cause mistake to survey (usually make measurement result bigger than normal), efficiency is low.The utility model can effectively address the above problem.
The utility model content
The purpose of this utility model is to design a kind of surveying instrument of novel body ovality, addresses the above problem.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of surveying instrument of body ovality, comprise rigidity semi-round ball, contact jaw and scale milscale, and described contact jaw and described scale milscale are separately positioned on the semicircle two ends of described rigidity semi-round ball;
The direction of measurement line of described scale milscale and described contact jaw point-blank, and the center of circle of the described rigidity semi-round ball of described straight-line pass;
The diameter of described rigidity semi-round ball equals, and described contact jaw arrives the metering contact of the distance between described rigidity semi-round ball, described scale milscale to the distance between described rigidity semi-round ball and the diameter of described tested body, three's sum.
Also comprise and facilitate handle, the described handle that facilitates is fixed on described rigidity semi-round ball.
Described rigidity semi-round ball is the steel semi-round ball.
The thickness of described steel rigidity semi-round ball is 159mm-508mm.
Described tested body is oil gas conveying steel pipe body.
A kind of measuring method of using described surveying instrument, be stuck in the metering contact of the contact jaw of described surveying instrument and described scale milscale on tested body, and guarantee that the line of described contact jaw and described metering contact passes through the center of circle of described tested body;
The described surveying instrument that moves around, by regulating the knob of described scale milscale, find full-scale reading and least count, and record; The difference of calculating both obtains the body ovality numerical value at the measured position of described tested body.
This measuring instrument can conveniently apply to the tubulation industry, is specially adapted to ovality is had relatively high expectations and done on the pipeline of through ball test as needs.This measuring instrument comprises a steel semicircle spherical (diameter is depending on tested steel pipe caliber), and middle connection one facilitates handle, and an end is contact jaw, the scale milscale that the other end is a knob adjustable size, and precision can reach 0.01mm.
This utility model is pipe diameter size no matter, all adopts externally measuredly, the instrument two-end-point is stuck on the steel pipe of a certain caliber, move around, by regulating the rule knob, find full-scale reading and least count, both differences are the body ovality of this steel tube place measuring point.Use portable, precision is high, it is high to measure efficiency.Solved the measurement difficult problem of body ovality.
The beneficial effects of the utility model can be summarized as follows:
1, the utility model use portable, simple in structure, detect broad covered area, precision high, measure efficiency high, can reduce working strength.
2, the utility model detects broad covered area, can cover the steel pipe ovality of all standard calibers, has solved the measurement difficult problem of body ovality.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The surveying instrument of a kind of body ovality as shown in Figure 1, comprise rigidity semi-round ball 1, contact jaw 2 and scale milscale 3, and described contact jaw 2 and described scale milscale 3 are separately positioned on the semicircle two ends of described rigidity semi-round ball 1; The direction of measurement line of described scale milscale 3 and described contact jaw 2 point-blank, and the center of circle of the described rigidity semi-round ball 1 of described straight-line pass; The diameter of described rigidity semi-round ball 1 equals, and described contact jaw 2 arrives the metering contact 6 of the distance between described rigidity semi-round ball 1, described scale milscale 3 to the distance between described rigidity semi-round ball 1 and the diameter of described tested body 5, three's sum.
In the embodiment be more preferably, the surveying instrument of described body ovality also comprises and facilitates handle 4, and the described handle 4 that facilitates is fixed on described rigidity semi-round ball 1.
In the embodiment be more preferably, described rigidity semi-round ball 1 is the steel semi-round ball.The thickness of described steel rigidity semi-round ball 1 is 159mm-508mm.Described tested body 5 is oil gas conveying steel pipe body.
A kind of measuring method of using described surveying instrument, the metering contact 6 of the contact jaw of described surveying instrument 2 and described scale milscale 3 is stuck on tested body 5, and guarantees that described contact jaw 2 and the line of described metering contact 6 pass through the center of circle of described tested body 5;
The described surveying instrument that moves around, by regulating the knob of described scale milscale 3, find full-scale reading and least count, and record; The difference of calculating both obtains the body ovality numerical value at the measured position of described tested body 5.
Further the utility model is described to comparison in conjunction with example:
Table 1 has exemplified the utility model measuring instrument and micrometer inside caliper, tape measure are measured jointly with the steel pipe body ovality value of caliber and the time spent.
Table 1 different tube diameters body ellipticity measurement value and the time spent
From measurement result and the time spent, apparent, the utility model body ellipticity measurement instrument occupies a clear edge.
More than by concrete and preferred embodiment detailed description the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any modification of doing, be equal to replacement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. the surveying instrument of a body ovality, it is characterized in that: comprise rigidity semi-round ball, contact jaw and scale milscale, described contact jaw and described scale milscale are separately positioned on the semicircle two ends of described rigidity semi-round ball;
The direction of measurement line of described scale milscale and described contact jaw point-blank, and the center of circle of the described rigidity semi-round ball of described straight-line pass;
The diameter of described rigidity semi-round ball equals, and described contact jaw arrives the metering contact of the distance between described rigidity semi-round ball, described scale milscale to the distance between described rigidity semi-round ball and the diameter of described tested body, three's sum.
2. the surveying instrument of body ovality according to claim 1, it is characterized in that: also comprise and facilitate handle, the described handle that facilitates is fixed on described rigidity semi-round ball.
3. the surveying instrument of body ovality according to claim 1, it is characterized in that: described rigidity semi-round ball is the steel semi-round ball.
4. the surveying instrument of body ovality according to claim 3, it is characterized in that: the thickness of described steel rigidity semi-round ball is 159mm-508mm.
5. the surveying instrument of body ovality according to claim 1, it is characterized in that: described tested body is oil gas conveying steel pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320490695 CN203364739U (en) | 2013-08-12 | 2013-08-12 | Measuring instrument for tube body ovality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320490695 CN203364739U (en) | 2013-08-12 | 2013-08-12 | Measuring instrument for tube body ovality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203364739U true CN203364739U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320490695 Expired - Fee Related CN203364739U (en) | 2013-08-12 | 2013-08-12 | Measuring instrument for tube body ovality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203364739U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398650A (en) * | 2013-08-12 | 2013-11-20 | 北京隆盛泰科石油管科技有限公司 | Ellipticity measuring instrument for tube body and measurement method thereof |
| CN103817395A (en) * | 2014-03-14 | 2014-05-28 | 上海气焊机厂有限公司 | Ovality measuring device, intersecting line cutting device and control method |
| CN109470121A (en) * | 2018-12-06 | 2019-03-15 | 西安泰锐精密机械科技有限公司 | A kind of petroleum pipeline ellipticity measurement device |
-
2013
- 2013-08-12 CN CN 201320490695 patent/CN203364739U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398650A (en) * | 2013-08-12 | 2013-11-20 | 北京隆盛泰科石油管科技有限公司 | Ellipticity measuring instrument for tube body and measurement method thereof |
| CN103817395A (en) * | 2014-03-14 | 2014-05-28 | 上海气焊机厂有限公司 | Ovality measuring device, intersecting line cutting device and control method |
| CN109470121A (en) * | 2018-12-06 | 2019-03-15 | 西安泰锐精密机械科技有限公司 | A kind of petroleum pipeline ellipticity measurement device |
| CN109470121B (en) * | 2018-12-06 | 2023-10-20 | 西安泰锐精密机械科技有限公司 | Petroleum pipe ellipticity measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20180812 |