CN102175117B - Concave hole measurement tool - Google Patents
Concave hole measurement tool Download PDFInfo
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- CN102175117B CN102175117B CN201110021097A CN201110021097A CN102175117B CN 102175117 B CN102175117 B CN 102175117B CN 201110021097 A CN201110021097 A CN 201110021097A CN 201110021097 A CN201110021097 A CN 201110021097A CN 102175117 B CN102175117 B CN 102175117B
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- measuring head
- resilient sleeve
- scale bar
- measuring
- rod
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Abstract
The invention discloses a concave hole measurement tool for measuring the inside diameter of a pipe hole after a pipe of a high pressure heater is expanded. A tightening nut and an adjusting nut are sequentially screwed at the thread end of an elastic sleeve; a ruler rod is inserted into the inner hole of the elastic sleeve; an anti-slip nut is arranged at the lower end of the ruler rod; the lower end of the elastic sleeve is provided with a measuring head; the upper part of the ruler rod is provided with a measuring ruler, and the lower part of the ruler rod is a conical rod; and the measuring head is jointed with the conical rod at the lower part of the ruler rod. For measuring a concave hole with two small ends and a big middle part formed after the pipe is expanded, the measurement is fast, the abrasion of the measuring head is low, the cost is low, and the measurement tool is convenient to use.
Description
Affiliated technical field
The invention belongs to a kind of survey instrument of measuring the diameter of bore behind the high-pressure heater expand tube.
Background technology
At present, the connection of the tube-to-tube sheet connection of domestic high-pressure heater generally adopts expanded joint or expanded and welded tube joint to connect, and the expanded joint mode has machinery, hydraulic pressure, three kinds of forms of explosive expanding, all need measure the pipe diameter of bore behind the expanded joint, and whether inspection is leaked bloated or owed bloated.Shell-and-tube heat exchanger standard code pipe is imported and exported all to have and is not a bit ofly expanded, so the pore behind the expanded joint all is inward recess broad in the middle small in ends, and existing surveying instrument is a dial bore gage; Because the measuring head of dial bore gage is very thin; And the pore quantity that will measure is many, and the hole is dark again, and this in addition inward recess two broad in the middle is little; Dial gauge is difficult to free in and out, so the measuring head quick abrasion, measurement is very time-consuming, the surveying instrument loss is also big.
Summary of the invention
The purpose of this invention is to provide a kind of inward recess survey instrument and solve the quick abrasion that has dial bore gage now, the problem that measurement is time-consuming, the surveying instrument loss is also big.
Principle of the present invention is: the cross-sectional diameter of diverse location has nothing in common with each other on the conical rod, and when conical rod inserted fixing round and elastic cover, the external diameter of resilient sleeve changed with the straight-line displacement of conical rod.The present invention has designed conical rod and the purpose that reaches the internal diameter of measuring inward recess easily and fast cooperating of resilient sleeve according to this principle.
The technical scheme that the present invention adopted is: a kind of inward recess survey instrument; Screw on successively at the threaded end of resilient sleeve and to piece together jack panel, setting nut, scale bar inserts in the endoporus of resilient sleeve, loads onto screwed retaining ring in the lower end of scale bar; The bottom of resilient sleeve has three cannelures and forms elastic construction; The resilient sleeve bottom is a measuring head, and the measuring head internal diameter is less than the resilient sleeve internal diameter, and the top of scale bar is provided with surveyors' staff; The bottom is a conical rod, and the conical rod of measuring head and scale bar bottom is fitted.
Before the measurement; Make the upper surface of setting nut aim at the N on the surveyors' staff earlier; Whether the external diameter of check measurement head equates with the ips that requires, if do not wait, can make the external diameter of measuring head equal the ips of requirement through the advance and retreat scale bar; Rotate setting nut again its upper surface is aimed at N on the surveyors' staff, and rotate and piece together jack panel and piece together the tightening position.Because the heat exchanger tube specification of high-pressure heater all is identical, only need preoperation inspection once to get final product.During measurement, can retreat scale bar earlier, at this moment the measuring head reduced diameter; When narrowing down to, just can get into inward recess easily less than ips; Push scale bar again after getting into inward recess, measuring head and pore inwall fitted, that just can judge from the scale position on the corresponding surveyors' staff in the upper surface of setting nut this moment is qualified, owe to expand still be leak bloated; Retreat scale bar again, the inward recess survey instrument just can withdraw from easily.On the surveyors' staff:
The N-ips.
Pore internal diameter lower deviation after S-allows to expand.
The pore internal diameter upper deviation after L-allows to expand.
When the scale position on the corresponding surveyors' staff in the upper surface of setting nut≤N, represent to expand,＞N＜S is for owing bloated, and>=S≤L is qualified.
The invention has the beneficial effects as follows: measure fast, the measuring head wearing and tearing are little, and cost is low, and is easy to use.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Figure of description is vertical insight structural map of the present invention;
Among the figure: 1. screwed retaining ring, 2. measuring head, 3. resilient sleeve, 4. scale bar is 5. pieced together jack panel, 6. setting nut, 7. surveyors' staff, 8. pipe.
Embodiment
In the accompanying drawing, screw on successively at the threaded end of resilient sleeve (3) and to piece together jack panel (5), setting nut (6), scale bar (4) inserts in the endoporus of resilient sleeve (3); Load onto screwed retaining ring (1) in the lower end of scale bar; The external diameter of resilient sleeve is less than pipe (8) internal diameter, and the bottom of resilient sleeve (3) has three cannelures and forms elastic construction, and resilient sleeve (3) bottom is measuring head (2); The measuring head internal diameter is less than the resilient sleeve internal diameter; The top of scale bar (4) is provided with surveyors' staff (7), and the bottom is a conical rod, and measuring head (2) is fitted with the conical rod of scale bar (4) bottom.
Before the measurement; Make the upper surface of setting nut (6) aim at the N on the surveyors' staff (7) earlier; Whether the external diameter of check measurement head (2) equates with the pipe that requires (8) internal diameter, if do not wait, can make the external diameter of measuring head equal the ips of requirement through advance and retreat scale bars (4); Rotate setting nut (6) again its upper surface is aimed at N on the surveyors' staff (7), and rotate and piece together jack panel (5) and piece together the tightening position.Because the heat exchanger tube specification of high-pressure heater all is identical, only need preoperation inspection once to get final product.During measurement, can retreat scale bar earlier, at this moment the measuring head reduced diameter; When narrowing down to, just can get into inward recess easily less than ips; Push scale bar again after getting into inward recess, measuring head and pore inwall fitted, that just can judge from the scale position on the corresponding surveyors' staff in upper surface (7) of setting nut (6) this moment is qualified, owe to expand still be leak bloated; Retreat scale bar (4) again, the inward recess survey instrument just can withdraw from easily.On the surveyors' staff:
The N-ips.
Ips lower deviation after S-allows to expand.
The ips upper deviation after L-allows to expand.
When the scale position on the corresponding surveyors' staff in the upper surface of setting nut≤N, represent to expand,＞N＜S is for owing bloated, and>=S≤L is qualified.
Before formal expanded joint, must do the technological experiment of tube-to-tube sheet connection expanded joint according to standard code, factory can confirm the concrete numerical value of L, S, N according to existing experimental data.
Claims (1)
1. inward recess survey instrument is screwed on successively at the threaded end of resilient sleeve and to be pieced together jack panel, setting nut, and scale bar inserts in the endoporus of resilient sleeve; Screwed retaining ring is loaded onto in lower end at scale bar, it is characterized in that: the bottom of resilient sleeve has three cannelures and forms elastic construction, and the resilient sleeve bottom is a measuring head; The measuring head internal diameter is less than the resilient sleeve internal diameter; The top of scale bar is provided with surveyors' staff, and the bottom is a conical rod, and the conical rod of measuring head and scale bar bottom is fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110021097A CN102175117B (en) | 2011-01-19 | 2011-01-19 | Concave hole measurement tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110021097A CN102175117B (en) | 2011-01-19 | 2011-01-19 | Concave hole measurement tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102175117A CN102175117A (en) | 2011-09-07 |
| CN102175117B true CN102175117B (en) | 2012-10-17 |
Family
ID=44518327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110021097A Active CN102175117B (en) | 2011-01-19 | 2011-01-19 | Concave hole measurement tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102175117B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833289B (en) * | 2014-06-19 | 2017-11-03 | 北汽福田汽车股份有限公司 | Inner diameter measurement apparatus |
| CN111122314A (en) * | 2019-11-26 | 2020-05-08 | 河南航天精工制造有限公司 | Flaring test tool |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040632U (en) * | 1987-12-28 | 1989-07-05 | 朱振卉 | Multifunctional vernier caliper |
| US5092056A (en) * | 1989-09-08 | 1992-03-03 | Halliburton Logging Services, Inc. | Reversed leaf spring energizing system for wellbore caliper arms |
| JP2000111305A (en) * | 1998-10-01 | 2000-04-18 | Ozaki Seisakusho:Kk | Standard of inner measurement measuring apparatus |
| JP2003065742A (en) * | 2001-08-29 | 2003-03-05 | Tokyo Seimitsu Co Ltd | Method and device for measuring inside diameter |
| CN101038148A (en) * | 2006-03-16 | 2007-09-19 | 三丰株式会社 | Screw measuring method, screw measuring probe, and screw measuring apparatus using the screw measuring probe |
| CN101057060A (en) * | 2004-09-22 | 2007-10-17 | 普拉德研究及发展公司 | An apparatus for measuring an internal dimension of a well-bore |
| CN101319864A (en) * | 2008-06-25 | 2008-12-10 | 无锡富瑞德精密机械有限公司 | Plug gauge head pore diameter measurement mechanism |
| US7765710B2 (en) * | 2008-04-03 | 2010-08-03 | Foxnum Technology Co., Ltd. | Apparatus and method for measuring diameter of hole |
-
2011
- 2011-01-19 CN CN201110021097A patent/CN102175117B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040632U (en) * | 1987-12-28 | 1989-07-05 | 朱振卉 | Multifunctional vernier caliper |
| US5092056A (en) * | 1989-09-08 | 1992-03-03 | Halliburton Logging Services, Inc. | Reversed leaf spring energizing system for wellbore caliper arms |
| JP2000111305A (en) * | 1998-10-01 | 2000-04-18 | Ozaki Seisakusho:Kk | Standard of inner measurement measuring apparatus |
| JP2003065742A (en) * | 2001-08-29 | 2003-03-05 | Tokyo Seimitsu Co Ltd | Method and device for measuring inside diameter |
| CN101057060A (en) * | 2004-09-22 | 2007-10-17 | 普拉德研究及发展公司 | An apparatus for measuring an internal dimension of a well-bore |
| CN101038148A (en) * | 2006-03-16 | 2007-09-19 | 三丰株式会社 | Screw measuring method, screw measuring probe, and screw measuring apparatus using the screw measuring probe |
| US7765710B2 (en) * | 2008-04-03 | 2010-08-03 | Foxnum Technology Co., Ltd. | Apparatus and method for measuring diameter of hole |
| CN101319864A (en) * | 2008-06-25 | 2008-12-10 | 无锡富瑞德精密机械有限公司 | Plug gauge head pore diameter measurement mechanism |
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| Publication number | Publication date |
|---|---|
| CN102175117A (en) | 2011-09-07 |
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