CN203224343U - Boiler large plate girder deflection testing apparatus - Google Patents
Boiler large plate girder deflection testing apparatus Download PDFInfo
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- CN203224343U CN203224343U CN 201320153011 CN201320153011U CN203224343U CN 203224343 U CN203224343 U CN 203224343U CN 201320153011 CN201320153011 CN 201320153011 CN 201320153011 U CN201320153011 U CN 201320153011U CN 203224343 U CN203224343 U CN 203224343U
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- girder
- large plate
- big plate
- plate girder
- sensor
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- 238000012360 testing method Methods 0.000 title claims abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a boiler large plate girder deflection testing apparatus, solving the problems of big measurement error and complex implementation in the prior art. The boiler large plate girder deflection testing apparatus comprises a large plate girder (7), a central processor (1), a stepping motor (2), a laser range-finding sensor (3), and an inclination angle sensor (4), wherein the stepping motor (2) is arranged in a horizontal plane right below the center of the large plate girder (7); the inclination angle sensor (4) is arranged on an output shaft of the stepping motor (2); the laser range-finding sensor (3) is arranged on the inclination angle sensor (4); the stepping motor (2), the inclination angle sensor (4), and the laser range-finding sensor (3) are all connected with the central processor (1) electrically; and a display (6) provided with a keyboard (5) is connected with the central processor (1). The beneficial effects of the utility model are that the boiler large plate girder deflection testing apparatus is capable of rapidly and accurately measuring the deflection of the boiler large plate girder and drawing the line of deflection of the large plate girder.
Description
Technical field
The present invention relates to the big plate-girder deflection test device of a kind of boiler, reached and easily and fast the amount of deflection of the big plate-girder of mounted boiler has been tested.
Background technology
Big plate-girder is the topmost load-supporting part of boiler, is bearing the weight of boiler overwhelming majority parts, and it is the effective means that guarantees safe operation of the boiler that the amount of deflection of big plate-girder is detected.But along with the continuous increase of boiler capacity, big plate-girder is also more and more longer, and the furnace roof suspension rod is a lot of simultaneously, is also arranging main vapour and hot arc pipeline again, and surveying work is met difficulty.At present, the normal method of testing that adopts is drawn horizontal line method, or with means such as total powerstations, but all exists error big and implement complicated shortcoming.
Summary of the invention
The invention provides the big plate-girder deflection test device of a kind of boiler, solved the big and enforcement complicated problems of measuring error that prior art exists.
The big plate-girder deflection test device of a kind of boiler, comprise big plate-girder, central processing unit, stepper motor, laser range sensor and obliquity sensor, stepper motor is arranged on the surface level under the central authorities of big plate-girder, the output shaft of stepper motor is provided with obliquity sensor, obliquity sensor is provided with laser range sensor, stepper motor, obliquity sensor and laser range sensor are electrically connected with central processing unit respectively, are connected with the display of band keyboard at central processing unit.
Stepper motor is arranged on the surface level under the lower wing plate central authorities of big plate-girder.
The big plate-girder deflection test method of a kind of boiler may further comprise the steps:
The first step, the surface level under the lower wing plate central authorities of big plate-girder arrange stepper motor, mounted angle sensor on the output shaft of stepper motor, fixedly mounted laser range sensor at obliquity sensor, the display of stepper motor, obliquity sensor, laser range sensor and band keyboard has been electrically connected with central processing unit respectively;
Second step, make marks at the left end A point of the lower wing plate of big plate-girder, right-hand member B point at the lower wing plate of big plate-girder makes marks, manually the rotary laser distance measuring sensor makes its laser facula point to A point and the B point of big plate-girder both sides respectively, the inclination angle value that A point and B are ordered is made as the rotation angle range of stepper motor, and is input in the central processing unit by keyboard;
The 3rd step, central processing unit control step motor go on foot at the uniform velocity rotation in the angular range that sets second, make laser facula move to the right-hand member B point of the lower wing plate of big plate-girder continuously by the left end A point of the lower wing plate of big plate-girder, central processing unit is gathered the data of the inclination alpha of the data of range finding L of laser range sensor and obliquity sensor with certain sampling rate simultaneously;
The 4th step, central processing unit show the line of deflection of big plate-girder at display screen after carrying out the data processing, and indicate the amount of deflection maximal value position of big plate-girder.
Stepper motor of the present invention can change electric impulse signal into angular displacement, and frequency and the umber of pulse of pulse signal only depended in its rotating speed, the position that stops, and its rotation is to move step by step with fixing angle.Drive the sensor rotation by it during work, guarantee that laser facula can at the uniform velocity move to the opposite side fulcrum by big plate-girder one side fulcrum.Gather distance and inclination data with certain sampling rate simultaneously, central processing unit is collected distance and inclination data, can calculate the discrepancy in elevation and the horizontal range of every bit and tester between big plate-girder two fulcrums by simple trigonometric function, through handling the line of deflection that can demonstrate big plate-girder, amount of deflection maximal value and position.
Concrete computation process is as follows: establishing A, B is the both sides fulcrum, C be middle certain a bit, L
A, L
B, L
CBe respectively tester that distance measuring sensor records to the distance of this point, α
A, α
B, α
CBe respectively obliquity sensor laser guide this time the inclination angle that records.Then the horizontal range between A, B two fulcrums is L
A* cos α
A+ L
B* cos α
B, the vertical range of A, B two fulcrums and tester is L
A* sin α
AAnd L
B* sin α
BThe C point is L to the horizontal range of tester
C* cos α
C, vertical range is L
C* sin α
CThe deflection value at C point place is the difference of C point and two fulcrum A, vertical range that B surveys.The test value of each point all is that (L α), couples together the line of deflection that has just obtained this big plate-girder with the coordinate points of all measuring points to polar coordinates.
The invention has the beneficial effects as follows, amount of deflection that can the big plate-girder of quick and accurate measurement boiler, and can draw the line of deflection of big plate-girder.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
The big plate-girder deflection test device of a kind of boiler, comprise big plate-girder 7, central processing unit 1, stepper motor 2, laser range sensor 3 and obliquity sensor 4, stepper motor 2 is arranged on the surface level under the central authorities of big plate-girder 7, the output shaft of stepper motor 2 is provided with obliquity sensor 4, obliquity sensor 4 is provided with laser range sensor 3, stepper motor 2, obliquity sensor 4 and laser range sensor 3 are electrically connected with central processing unit 1 respectively, are connected with the display 6 of band keyboard 5 at central processing unit 1.
The big plate-girder deflection test method of a kind of boiler may further comprise the steps:
The first step, the surface level under the lower wing plate central authorities of big plate-girder 7 arrange stepper motor 2, mounted angle sensor 4 on the output shaft of stepper motor 2, fixedly mounted laser range sensor 3 at obliquity sensor 4, the display 6 of stepper motor 2, obliquity sensor 4, laser range sensor 3 and band keyboard 5 has been electrically connected with central processing unit 1 respectively;
Second step, make marks at the left end A point of the lower wing plate of big plate-girder 7, right-hand member B point at the lower wing plate of big plate-girder 7 makes marks, manually rotary laser distance measuring sensor 3 makes its laser facula point to A point and the B point of big plate-girder both sides respectively, the inclination angle value that A point and B are ordered is made as the rotation angle range of stepper motor 2, and is input in the central processing unit 1 by keyboard 5;
The 3rd step, central processing unit 1 control step motor 2 go on foot at the uniform velocity rotation in the angular range that sets second, make laser facula move to the right-hand member B point of the lower wing plate of big plate-girder continuously by the left end A point of the lower wing plate of big plate-girder, central processing unit 1 is gathered the data of the inclination alpha of the data of range finding L of laser range sensor 3 and obliquity sensor 4 with certain sampling rate simultaneously;
After the 4th step, central processing unit 1 carry out the data processing, show the line of deflection of big plate-girder at display screen 6, and indicate the amount of deflection maximal value position of big plate-girder.
Claims (2)
1. big plate-girder deflection test device of boiler, comprise big plate-girder (7), central processing unit (1), stepper motor (2), laser range sensor (3) and obliquity sensor (4), it is characterized in that, stepper motor (2) is arranged on the surface level under the central authorities of big plate-girder (7), the output shaft of stepper motor (2) is provided with obliquity sensor (4), obliquity sensor (4) is provided with laser range sensor (3), stepper motor (2), obliquity sensor (4) and laser range sensor (3) are electrically connected with central processing unit (1) respectively, are connected with the display (6) of band keyboard (5) at central processing unit (1).
2. the big plate-girder deflection test device of a kind of boiler according to claim 1 is characterized in that, stepper motor (2) is arranged on the surface level under the lower wing plate central authorities of big plate-girder (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320153011 CN203224343U (en) | 2013-03-29 | 2013-03-29 | Boiler large plate girder deflection testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320153011 CN203224343U (en) | 2013-03-29 | 2013-03-29 | Boiler large plate girder deflection testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203224343U true CN203224343U (en) | 2013-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320153011 Expired - Fee Related CN203224343U (en) | 2013-03-29 | 2013-03-29 | Boiler large plate girder deflection testing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203224343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217262A (en) * | 2013-03-29 | 2013-07-24 | 国家电网公司 | Device and method for testing board girder deflection of boiler |
| CN115824539A (en) * | 2023-02-14 | 2023-03-21 | 滨州市特种设备检验研究院 | Large plate girder deflection measuring system |
-
2013
- 2013-03-29 CN CN 201320153011 patent/CN203224343U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217262A (en) * | 2013-03-29 | 2013-07-24 | 国家电网公司 | Device and method for testing board girder deflection of boiler |
| CN103217262B (en) * | 2013-03-29 | 2015-09-09 | 国家电网公司 | Boiler girder deflection test method |
| CN115824539A (en) * | 2023-02-14 | 2023-03-21 | 滨州市特种设备检验研究院 | Large plate girder deflection measuring system |
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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: 20131002 Termination date: 20180329 |