CN101825455B - Remote concentricity measuring device - Google Patents
Remote concentricity measuring device Download PDFInfo
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- CN101825455B CN101825455B CN2010101814475A CN201010181447A CN101825455B CN 101825455 B CN101825455 B CN 101825455B CN 2010101814475 A CN2010101814475 A CN 2010101814475A CN 201010181447 A CN201010181447 A CN 201010181447A CN 101825455 B CN101825455 B CN 101825455B
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- displacement transducer
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Abstract
The invention relates to a remote concentricity measuring device which is used for measuring whether a circle center of a measured hole and a center of a reference deep hole are arranged on the same axis or not. The measuring device comprises a ring gauge, a measuring rod and a digital display instrument, wherein a cylinder for being embedded into the measured hole is arranged on one end surface of the ring gauge, the other end surface is provided with an annular groove, and the inner side of the annular groove is provided with a boss; and the measuring rod comprises a pipe body which extends into the reference deep hole, a bending rod, a displacement sensor which is arranged at an inner cavity of the pipe and a handle which is arranged at one end of the pipe body. The invention can be used for conveniently and efficiently measuring concentricity between holes in overlong distance, thereby effectively preventing a deviation phenomenon of the concentricity between the two holes and ensuring the quality of a nuclear power evaporator product.
Description
Technical field
The present invention relates to field of measuring technique, relate in particular to a kind of remote concentricity measuring device.
Background technology
At present, the diameter phi 3000mm of common nuclear power evaporator tube sheet, thickness is 600mm, nearly ten thousand deep holes are arranged in the above, the back up pad identical with its diameter is at a distance of its 700mm, needing in installation with the tubesheet holes be benchmark, measure between the hole corresponding on the back up pad the center of circle whether with the center of datum hole on same axis, i.e. concentricity between measured hole and the hole.The deviation of concentricity will directly have influence in the pore of nearly ten thousand rectangular arranged, can pass the U type tube bank that reaches tens meters smoothly, exactly, and in nuclear island operational process from now on, if because decentraction between tube bank of U type and the pore, then the stress of its generation very easily causes nuclear accident.
Traditional concentricity measurement mechanism is by realize the transmission of displacement at the inner employing of device displacement drive link; Yet owing to the structure of displacement drive link is carefully grown, make difficulty, therefore, pitch-row between measured hole and the datum hole is required relatively harshness, in case the pitch-row overlength, then the length of displacement drive link is also wanted corresponding growth, thereby not only increased its manufacture difficulty, and, in case the displacement drive link deforms owing to long, then will reduce measuring accuracy greatly.Therefore, how to measure effectively and accurately two for the concentricity between the Kong Yukong of one and pitch-row overlength to guarantee the nucleus product quality, become the problem of insider's primary study.
Summary of the invention
In order to solve the problem that above-mentioned prior art exists, the present invention aims to provide a kind of convenient, efficient, can the extra long distance measured hole and the hole between the measurement mechanism of concentricity, to realize effectively preventing the bias phenomenon of concentricity, guarantee the purpose of nuclear power evaporator product quality.
A kind of remote concentricity measuring device of the present invention, the center of circle that is used to measure measured hole whether with the center of benchmark deep hole at same axis, described measurement mechanism comprises a ring gauge, a sounding rod and a digital displaying meter,
One end face of described ring gauge is provided with a cylinder that is used to embed described measured hole, and its other end is provided with an annular groove, and this annular groove inboard is provided with a boss;
Described sounding rod comprises that the body that stretches into described benchmark deep hole, the displacement transducer and that a bent rod, is arranged on described tube cavity are arranged on the handle of described body one end, wherein,
The other end of described body is provided with a frustum of a cone, the upper bottom surface of this frustum of a cone is provided with a groove, its side surface is provided with alignment pin and the limit shaft that passes described recess sidewall, and the bottom surface of described groove is provided with a through hole that is used to insert the probe of described displacement transducer;
The middle part crooked place of described bent rod is movably connected in the groove of the described frustum of a cone by described alignment pin, one end of described bent rod is provided with gauge head, the other end is inserted between the probe of described limit shaft and displacement transducer, and makes this probe have an initial compression amount;
Described digital displaying meter is connected with described displacement transducer by data line.
In above-mentioned remote concentricity measuring device, the outside surface of the part that is arranged in described benchmark deep hole of described body is interval with two circle bulge loops, and the aperture of the diameter of described bulge loop and described benchmark deep hole is complementary.
In above-mentioned remote concentricity measuring device, described alignment pin and described gauge head and equate with distance between the probe of described displacement transducer.
In above-mentioned remote concentricity measuring device, the center of circle of the annular groove of described ring gauge and the center of circle of described cylinder are positioned on the same axis.
Owing to adopted above-mentioned technical solution, the present invention is by adopting displacement transducer and it being installed in the front end of sounding rod inner chamber, make its displacement be transferred to digital displaying meter by data line, therefore, the loss of precision only is the decay (very small can ignoring) of electric signal in whole measuring process, as long as and can guarantee the rigidity of sounding rod material when transmitting with data line, then the pitch-row length in two holes can be unrestricted; Thereby realize the high-precision measurement of carrying out concentricity between extra long distance two holes.In addition, adopt the mode that digital displaying meter and sounding rod branch are arranged among the present invention, therefore, which position sounding rod turns to can not influence and observes and record data, thereby has also improved the precision of measuring to a certain extent.
Description of drawings
Fig. 1 is the structural representation of remote concentricity measuring device of the present invention;
Fig. 2 is the user mode figure of remote concentricity measuring device of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
See also Fig. 1, Fig. 2, the center of circle that remote concentricity measuring device of the present invention is used to measure the measured hole 102 on the back up pad 101 whether with the nuclear power evaporator tube sheet on the center of benchmark deep hole 103 at same axis, measurement mechanism comprises a ring gauge 1, a sounding rod 2 and a digital displaying meter 3, wherein
One end face of ring gauge 1 is provided with a cylinder 11 that is used to embed measured hole 102, and its other end is provided with an annular groove 12, and the center of circle of the center of circle of this annular groove 12 and cylinder 11 is positioned on the same axis; And annular groove 12 inboards are provided with a boss 13, are used for a top sounding rod and play position-limiting action;
The other end of body 21 is provided with a frustum of a cone 25, the upper bottom surface of this frustum of a cone 25 is provided with a groove (not shown), its side surface is provided with alignment pin 26 and the limit shaft 27 that passes recess sidewall, and the bottom surface of groove is provided with a through hole (not shown) that is used to insert the probe 29 of displacement transducer 23; The part that is arranged in benchmark deep hole 103 of body 21, promptly the outside surface of benchmark plug section is interval with two circle bulge loops 5, and the aperture of the diameter of bulge loop 5 and benchmark deep hole 103 is complementary;
Bent rod 22 the middle part crooked place be movably connected in the groove of the frustum of a cone 25 by alignment pin 26, one end of bent rod 22 is provided with gauge head 28, the other end is inserted between the probe 29 of limit shaft 27 and displacement transducer 23, and makes this probe 29 have an initial compression amount; Alignment pin 26 and gauge head 28 and equate with distance between the probe 29 of displacement transducer 23, promptly the center of alignment pin 26 is 1: 1 to gauge head 28 and to the dimension scale of displacement transducer 23 contact points;
In the present invention, gauge head 28 has enough radial displacements and movable steady, non-loosening sense; This device comes the scope of control survey by limit shaft 27; In this specific embodiment, the active length of displacement transducer 23 is 10mm, makes it have an initial compression amount by bent rod 22 effect, promptly compresses 5mm in advance, guaranteeing the dynamometry of displacement transducer 23, thereby eliminates the gap; Two bulge loops 5 on the benchmark plug section lay respectively at front and back two ends of benchmark deep hole 103, thereby guarantee the linearity of benchmark plug section and the dirigibility of running.
The present invention is fixed on ring gauge 1 in the measured hole 102 of back up pad 101 earlier in use, sounding rod 2 is passed in benchmark deep hole 103, and the benchmark plug section with bulge loop 5 is positioned in the benchmark deep hole 103; Again sounding rod 2 tops are withstood the boss 13 of ring gauge 1, gauge head 28 is contacted with the annular groove 12 of ring gauge 1, and compression gauge head 28, make the radial displacement of gauge head 28 change axial displacement into, and pass to displacement transducer 23; Then, converting displacement to electric signal by displacement transducer 23 is transferred in the digital displaying meter 3 and shows measured value through data line 4; At last, hold handle 2 one weeks of 24 wheel measuring bars,, measure the reading value of level (X) and vertical (Y) direction respectively in annular groove 12, thereby calculate the Concentricity tolerance of measured hole 102 and benchmark deep hole 103 even gauge head 28 rotates a circle.
Below embodiment has been described in detail the present invention in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the present invention according to the above description.Thereby some details among the embodiment should not constitute limitation of the invention, and the scope that the present invention will define with appended claims is as protection scope of the present invention.
Claims (2)
1. remote concentricity measuring device, the center of circle that is used to measure measured hole whether with the center of benchmark deep hole at same axis, it is characterized in that described measurement mechanism comprises a ring gauge, a sounding rod and a digital displaying meter,
One end face of described ring gauge is provided with a cylinder that is used to embed described measured hole, and its other end is provided with an annular groove, and this annular groove inboard is provided with a boss, is used for a described sounding rod in top and plays position-limiting action;
Described sounding rod comprises that the body that stretches into described benchmark deep hole, the displacement transducer and that a bent rod, is arranged on described tube cavity are arranged on handle described body one end, that be used to rotate described sounding rod, wherein,
The other end of described body is provided with a frustum of a cone, the upper bottom surface of this frustum of a cone is provided with a groove, its side surface is provided with alignment pin and the limit shaft that passes described recess sidewall, and the bottom surface of described groove is provided with a through hole that is used to insert the probe of described displacement transducer;
The middle part crooked place of described bent rod is movably connected in the groove of the described frustum of a cone by described alignment pin, one end of described bent rod is provided with gauge head, the other end is inserted between the probe of described limit shaft and displacement transducer, and makes this probe have an initial compression amount;
Described digital displaying meter is connected with described displacement transducer by data line;
The outside surface of the part that is arranged in described benchmark deep hole of described body is interval with two circle bulge loops, and the aperture of the diameter of described bulge loop and described benchmark deep hole is complementary;
The center of circle of the annular groove of described ring gauge and the center of circle of described cylinder are positioned on the same axis.
2. remote concentricity measuring device according to claim 1 is characterized in that, described alignment pin and described gauge head and equate with distance between the probe of described displacement transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101814475A CN101825455B (en) | 2010-05-24 | 2010-05-24 | Remote concentricity measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101814475A CN101825455B (en) | 2010-05-24 | 2010-05-24 | Remote concentricity measuring device |
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| CN101825455A CN101825455A (en) | 2010-09-08 |
| CN101825455B true CN101825455B (en) | 2011-08-17 |
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| CN2010101814475A Active CN101825455B (en) | 2010-05-24 | 2010-05-24 | Remote concentricity measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672256A (en) * | 2012-05-18 | 2012-09-19 | 中国核动力研究设计院 | In-pipe cutting device for heat transfer surface pipe of reactor steam generator |
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| CN102840842B (en) * | 2012-09-06 | 2016-03-23 | 上海电气核电设备有限公司 | Deep hole verticality laser measurement system and measuring method |
| CN104197818B (en) * | 2014-08-28 | 2017-01-25 | 天津博信汽车零部件有限公司 | Coaxiality detector for combined long-spaced shaft sleeve |
| CN106289047A (en) * | 2016-07-30 | 2017-01-04 | 无锡康柏斯机械科技有限公司 | A kind of real-time detection components of automotive wheel axiality |
| CN106767657A (en) * | 2016-11-23 | 2017-05-31 | 西安航天计量测试研究所 | A kind of barrel swivel part installs concentricity method for fast measuring and adjusting apparatus |
| CN106736498A (en) * | 2017-02-24 | 2017-05-31 | 安徽方圆机电股份有限公司 | A kind of many axle beds of long span are co-axially mounted adjusting process and device |
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| US3823484A (en) * | 1972-08-28 | 1974-07-16 | Dunn Tool Co | Multi-probe hole-location and concentricity-measuring spindle for dial indicator gauge |
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| CN201653343U (en) * | 2010-05-24 | 2010-11-24 | 上海电气核电设备有限公司 | Long-distance concentricity measuring device |
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| JPS60244801A (en) * | 1984-05-21 | 1985-12-04 | Hitachi Ltd | Measuring instrument for concentricity |
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2010
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| US3823484A (en) * | 1972-08-28 | 1974-07-16 | Dunn Tool Co | Multi-probe hole-location and concentricity-measuring spindle for dial indicator gauge |
| CN101013029A (en) * | 2006-02-03 | 2007-08-08 | 奥林巴斯医疗株式会社 | Concentricity and squareness measuring apparatus and methdo |
| CN201382771Y (en) * | 2009-02-20 | 2010-01-13 | 杭州富阳奥泰电器厂 | Coaxiality testing tool of motor-driven fan |
| CN201653343U (en) * | 2010-05-24 | 2010-11-24 | 上海电气核电设备有限公司 | Long-distance concentricity measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672256A (en) * | 2012-05-18 | 2012-09-19 | 中国核动力研究设计院 | In-pipe cutting device for heat transfer surface pipe of reactor steam generator |
| CN102672256B (en) * | 2012-05-18 | 2014-06-18 | 中国核动力研究设计院 | In-pipe cutting device for heat transfer surface pipe of reactor steam generator |
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| CN101825455A (en) | 2010-09-08 |
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