CN103837067A - Direct-reading type calipers for measuring ovality of pipeline - Google Patents
Direct-reading type calipers for measuring ovality of pipeline Download PDFInfo
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- CN103837067A CN103837067A CN201410106138.XA CN201410106138A CN103837067A CN 103837067 A CN103837067 A CN 103837067A CN 201410106138 A CN201410106138 A CN 201410106138A CN 103837067 A CN103837067 A CN 103837067A
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Abstract
The invention provides a pair of direct-reading type calipers for measuring the ovality of a pipeline. The pair of direct-reading type calipers comprises a calipers body which comprises two calipers legs with the ends hinged to each other through a hinge pin; a rotation angle sensor used for detecting relative rotation angle signals of the two calipers legs is arranged on the hinge pin, a digital display box is arranged on one calipers leg, an integrated circuit board is arranged in the digital display box, a microprocessor used for processing and calculating the angle signals sent by the rotation angle sensor and obtaining a space value between the ends of the two calipers legs is integrated on the integrated circuit board, and a display screen connected with the microprocessor through signals is arranged on the digital display box. The direct-reading type calipers have the advantages that when the direct-reading type calipers are clamped on a bent pipe or an elbow of the pipeline, the number is read without the requirement for taking the direct-reading type calipers out of the pipeline, the angle value is directly read, the calipers legs of the calipers are fastened at largest distance points, and the phenomenon that due to the fact that the distance between the two calipers legs changes, the accuracy of the value is influenced is avoided. An electronic mode and a mechanical mode are used for measuring the angle and errors are reduced.
Description
Technical field
The present invention relates to a kind of measuring channel ovality direct reading callipers.
Background technology
Ovality refers to maximum gauge and the difference of minimum diameter and the ratio of nominal diameter on bend pipe or the same circular section of elbow sweep, one of project that it should check while being power station pipeline manufacture, installation.Due to the existence of ovality, under interior pressure effect, produce extra-stress, cause the inhomogeneous of pipe stress; Under external pressure, can reduce the stability of pipeline.Therefore, ensureing that the ovality of bend pipe or elbow is not more than certain certain value, is very necessary for the safe and stable operation of station boiler.The measurement of ovality is an important indicator of inspection tube bends or elbow quality.According to the regulation of DL/T438-2009 " fuel-burning power plant alloying technology supervision code ", need to measure the ovality of tube bends and elbow, and reach respective standard.The elbow being subjected to supervision and bend pipe should carry out the inspection of ovality before batch production pipe arrangement.In addition, also front larger elbow or the bend pipe of ovality of the each A level maintenance of regulation unit reply installation carries out ellipticity measurement.
Orthogonal two diameters that measure bend pipe or elbow, its mean difference is pipe ovality with the ratio of nominal diameter.Current more employing be the method by caliper measurements: while measuring maximum gauge, a pincers pin leans against bend pipe or elbow one side, another pincers pin slides along pipe surface circumferencial direction, in the time that reaching maximum, two pincers pin spacings stop sliding, keep clamp openings of sizes constant, it is taken off from pipeline, measure the distance between two pincers pin with dip stick, be the diameter in a measured direction.In like manner can record minimum diameter, difference is to reach and hour to stop sliding in two pincers pin spacings.
The shortcoming of tradition clamp: 1., because clamp itself are not with scale, another pincers pin can not accurately be made maximum or minor increment point in the time that pipe surface circumferencial direction slides, and can only roughly estimate, has had a strong impact on the accuracy of measuring; 2. because clamp itself are not with scale, therefore on tube bends or elbow, carry out after screens, should, keeping carefully taking off clamp under the constant prerequisite of two pincers pin spacings, then measure the distance between two pincers pin with dip stick.In actual mechanical process, in the process of taking off clamp, usually due to the insecure or artificial touching of the holding screw of clamp, two pincers pin spacings are changed, directly affect the accuracy of numerical value.
Summary of the invention
For solving above technical deficiency, the invention provides a kind of accuracy of measurement high, measuring channel ovality direct reading callipers easy to use.
The present invention is achieved by the following measures:
A kind of measuring channel ovality direct reading callipers of the present invention, comprises caliper, and caliper comprises two
The pincers leg that end is hinged by jointed shaft, on described jointed shaft, be provided with the angular sensor that relatively rotates angle signal for detection of two pincers legs, on one of them pincers leg, be provided with digital display box, in described digital display box, be provided with surface-mounted integrated circuit, the angle signal being integrated with on described surface-mounted integrated circuit for angular sensor is sent is processed the microprocessor that calculates and draw two pincers leg tip spacing numerical value, is provided with the display screen being connected with microprocessor signals on digital display box.
On above-mentioned one of them pincers leg, be fixed with the angle scale of arc, the center of circle of angle scale place circle overlaps with jointed shaft, angle scale middle part has deep-slotted chip breaker, on another pincers leg, be threaded through the fastening bolt of deep-slotted chip breaker, described fastening bolt end is provided with the nut that diameter is greater than deep-slotted chip breaker width.
Above-mentioned angle scale upper edge surface is provided with angle index, is provided with the arrow of orientation angle dish upper angle scale on the pincers leg with fastening bolt.
On above-mentioned jointed shaft, be connected with pincers handle.
The invention has the beneficial effects as follows: on tube bends or elbow, carry out after screens, no longer take off reading after clamp, but directly read angle value, and fasten at the name a person for a particular job pincers leg of clamp of maximum or minor increment, avoid affecting the accuracy of numerical value because two pincers pin spacings change.Adopt electronics and two kinds of modes of machinery to take measurement of an angle, can two compare, guarantee the reliability of measurement data.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the sign picture of angle and length in the present invention.
Wherein: 1 pincers leg, 2 angle scales, 3 digital display boxes, 4 angular sensors, 5 pincers handles, 6 arrows, 7 deep-slotted chip breakers, 8 fastening bolts.
Embodiment
As shown in Figure 1, a kind of measuring channel ovality direct reading callipers of the present invention, comprises caliper, and caliper comprises that 1, two pincers leg 1 of pincers leg that two ends are hinged by jointed shaft can relatively rotate around jointed shaft.According to the installation requirement of angular sensor 4, angular sensor 4 is arranged on jointed shaft, and jointed shaft to be through the center of angular sensor 4, angular sensor 4 relatively rotates angle signal for detection of two pincers legs 1.On one of them pincers leg, be provided with digital display box 3, in digital display box 3, be provided with surface-mounted integrated circuit, on surface-mounted integrated circuit, be integrated with microprocessor, on digital display box 3, be provided with the display screen being connected with microprocessor signals.Microprocessor is processed and is calculated and draw two pincers leg tip spacing numerical value for the angle signal that angular sensor is sent, and this distance values is the diameter of tested bend pipe or elbow, and at display screen, this numerical value is shown.
In microprocessor, set calculation procedure, computation process as shown in Figure 2, adopts formula: d=2L*sin a; Wherein a=b-2c; In formula, d represents two pincers leg tip spacing numerical value, b represents the angle that angular sensor records, and c represents to clamp the angle between leg center line and pincers leg end, and a represents two angles between pincers leg end, L represents the air line distance of jointed shaft apart from pincers leg end, is also the intrinsic length of clamp.
In order to ensure reliability and the accuracy of measurement data, when being set, electronic reading out device is also provided with mechanical reading device, on one of them pincers leg 1, be fixed with the angle scale 2 of arc, the center of circle of angle scale 2 place circles overlaps with jointed shaft, angle scale 2 middle parts have deep-slotted chip breaker 7, on another pincers leg 1, be threaded through the fastening bolt 8 of deep-slotted chip breaker 7, fastening bolt 8 ends are provided with the nut that diameter is greater than deep-slotted chip breaker 7 width.Angle scale 2 upper edge surface are provided with angle index, are provided with the arrow 6 of orientation angle dish 2 upper angle scales on the pincers leg 1 with fastening bolt 8.On jointed shaft, be connected with pincers 5, handled easily personnel grip clamp.
When measurement, rotate two pincers legs 1 of clamp, the front end of pincers leg 1 is stuck in to measured pipe bent position, and move along bend pipe, find maximum or minimum distance, now angular sensor 4 detects in real time two pincers legs 1 and relatively rotates angle signal, and on the display screen of digital display box 3, demonstrates two pincers leg tip spacing numerical value.The fastening bolt 8 simultaneously unclamping also slides along deep-slotted chip breaker 7.In the time moving to maximum or minor increment, do not take off clamp, first fastening bolt 8 is tightened, prevent that two pincers legs 1 from being touched rear movement, read the scale that arrow 6 points to, be scaled diameter according to aforementioned formula.Should be to adopting electronics and two kinds of modes of machinery measure two obtained diameter values and compare, if both are more or less the same, illustrate that electronic installation normally works.Consider the accuracy of measurement, in the time that both are more or less the same, should be using electronical reading as measured value.If both differ larger, illustrate that electronic installation is undesired, now should be as the criterion with mechanical reading.
The above is only the preferred implementation of this patent; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the art of this patent principle; can also make some improvement and replacement, these improvement and replacement also should be considered as the protection domain of this patent.
Claims (4)
1. a measuring channel ovality direct reading callipers, comprise caliper, described caliper comprises the pincers leg that two ends are hinged by jointed shaft, it is characterized in that: on described jointed shaft, be provided with the angular sensor that relatively rotates angle signal for detection of two pincers legs, on one of them pincers leg, be provided with digital display box, in described digital display box, be provided with surface-mounted integrated circuit, the angle signal being integrated with on described surface-mounted integrated circuit for angular sensor is sent is processed the microprocessor that calculates and draw two pincers leg tip spacing numerical value, on digital display box, be provided with the display screen being connected with microprocessor signals.
2. measuring channel ovality direct reading callipers according to claim 1, it is characterized in that: the angle scale that is fixed with arc on one of them pincers leg, the center of circle of angle scale place circle overlaps with jointed shaft, angle scale middle part has deep-slotted chip breaker, on another pincers leg, be threaded through the fastening bolt of deep-slotted chip breaker, described fastening bolt end is provided with the nut that diameter is greater than deep-slotted chip breaker width.
3. measuring channel ovality direct reading callipers according to claim 2, is characterized in that: described angle scale upper edge surface is provided with angle index, is provided with the arrow of orientation angle dish upper angle scale on the pincers leg with fastening bolt.
4. measuring channel ovality direct reading callipers according to claim 1, is characterized in that: on described jointed shaft, be connected with pincers handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410106138.XA CN103837067A (en) | 2014-03-21 | 2014-03-21 | Direct-reading type calipers for measuring ovality of pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410106138.XA CN103837067A (en) | 2014-03-21 | 2014-03-21 | Direct-reading type calipers for measuring ovality of pipeline |
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| CN103837067A true CN103837067A (en) | 2014-06-04 |
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| CN201410106138.XA Pending CN103837067A (en) | 2014-03-21 | 2014-03-21 | Direct-reading type calipers for measuring ovality of pipeline |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547114A (en) * | 2015-12-11 | 2016-05-04 | 山东电力工业锅炉压力容器检验中心有限公司 | Tape measure for non-circularity detection and using method thereof |
| CN105571454A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated caliber |
| CN105571445A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Multifunctional caliper capable of realizing direct reading |
| CN105571455A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated inner and outer caliper |
| CN105571451A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Integrated caliper capable of realizing direct reading |
| CN105571452A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Integrated inner/outer caliper capable of realizing direct reading |
| CN105571446A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated multifunctional caliber |
| CN105571453A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Multifunctional caliber |
| CN105571444A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Integrated inner/outer caliper capable of realizing direct reading |
| CN105571443A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Multifunctional caliper capable of realizing direct reading |
| CN105571447A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated caliber |
| CN105571423A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated inner and outer caliper |
| CN105698638A (en) * | 2016-03-07 | 2016-06-22 | 南京市宏伟屠宰机械制造有限公司 | Direct reading multi-functional caliper |
| CN105698631A (en) * | 2016-03-07 | 2016-06-22 | 南京能益节能科技有限公司 | Caliper |
| CN105698628A (en) * | 2016-03-07 | 2016-06-22 | 南京市宏伟屠宰机械制造有限公司 | Direct reading integrated caliper |
| CN105698629A (en) * | 2016-03-07 | 2016-06-22 | 南京市宏伟屠宰机械制造有限公司 | Direct reading integrated hermaphrodite caliper |
| CN105698630A (en) * | 2016-03-07 | 2016-06-22 | 南京能益节能科技有限公司 | Multifunctional caliper |
| CN105698627A (en) * | 2016-03-07 | 2016-06-22 | 南京市宏伟屠宰机械制造有限公司 | Direct reading multi-functional caliper |
| CN105716492A (en) * | 2016-03-07 | 2016-06-29 | 南京能益节能科技有限公司 | Calipers |
| CN105783650A (en) * | 2016-03-07 | 2016-07-20 | 南京市宏伟屠宰机械制造有限公司 | Direct number reading integrated callipers |
| CN107478128A (en) * | 2017-10-09 | 2017-12-15 | 宝鸡中铁宝桥天元实业发展有限公司 | Steel rail top-bending unit bending amount dedicated test measurer and its detection method |
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| CN2092416U (en) * | 1991-05-25 | 1992-01-08 | 杨安麟 | Multiple purpose marker |
| CN1068885A (en) * | 1992-07-24 | 1993-02-10 | 吉林省林业科学研究院 | Diameter measuring gauge and calibrate method |
| CN2667454Y (en) * | 2004-01-13 | 2004-12-29 | 陈文龙 | Digital display combined calliper gauge |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547114A (en) * | 2015-12-11 | 2016-05-04 | 山东电力工业锅炉压力容器检验中心有限公司 | Tape measure for non-circularity detection and using method thereof |
| CN105547114B (en) * | 2015-12-11 | 2017-10-24 | 山东电力工业锅炉压力容器检验中心有限公司 | Out-of-roundness detection tape measure and its application method |
| CN105571447A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated caliber |
| CN105698631A (en) * | 2016-03-07 | 2016-06-22 | 南京能益节能科技有限公司 | Caliper |
| CN105571451A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Integrated caliper capable of realizing direct reading |
| CN105571452A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Integrated inner/outer caliper capable of realizing direct reading |
| CN105571446A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated multifunctional caliber |
| CN105571453A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Multifunctional caliber |
| CN105571444A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Integrated inner/outer caliper capable of realizing direct reading |
| CN105571443A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Multifunctional caliper capable of realizing direct reading |
| CN105571445A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Multifunctional caliper capable of realizing direct reading |
| CN105571423A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated inner and outer caliper |
| CN105698638A (en) * | 2016-03-07 | 2016-06-22 | 南京市宏伟屠宰机械制造有限公司 | Direct reading multi-functional caliper |
| CN105571455A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated inner and outer caliper |
| CN105698628A (en) * | 2016-03-07 | 2016-06-22 | 南京市宏伟屠宰机械制造有限公司 | Direct reading integrated caliper |
| CN105698629A (en) * | 2016-03-07 | 2016-06-22 | 南京市宏伟屠宰机械制造有限公司 | Direct reading integrated hermaphrodite caliper |
| CN105698630A (en) * | 2016-03-07 | 2016-06-22 | 南京能益节能科技有限公司 | Multifunctional caliper |
| CN105698627A (en) * | 2016-03-07 | 2016-06-22 | 南京市宏伟屠宰机械制造有限公司 | Direct reading multi-functional caliper |
| CN105716492A (en) * | 2016-03-07 | 2016-06-29 | 南京能益节能科技有限公司 | Calipers |
| CN105783650A (en) * | 2016-03-07 | 2016-07-20 | 南京市宏伟屠宰机械制造有限公司 | Direct number reading integrated callipers |
| CN105571454A (en) * | 2016-03-07 | 2016-05-11 | 南京能益节能科技有限公司 | Integrated caliber |
| CN107478128A (en) * | 2017-10-09 | 2017-12-15 | 宝鸡中铁宝桥天元实业发展有限公司 | Steel rail top-bending unit bending amount dedicated test measurer and its detection method |
| CN107478128B (en) * | 2017-10-09 | 2024-03-08 | 中铁宝桥(宝鸡)路桥建设有限公司 | Special detection measuring tool for bending amount of unit of steel rail top bending and detection method thereof |
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Application publication date: 20140604 |