CN102944170A - Method for carrying out alignment on stator part sleeves of steam turbine by utilizing laser tracker - Google Patents
Method for carrying out alignment on stator part sleeves of steam turbine by utilizing laser tracker Download PDFInfo
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- CN102944170A CN102944170A CN2012103153546A CN201210315354A CN102944170A CN 102944170 A CN102944170 A CN 102944170A CN 2012103153546 A CN2012103153546 A CN 2012103153546A CN 201210315354 A CN201210315354 A CN 201210315354A CN 102944170 A CN102944170 A CN 102944170A
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Abstract
The invention discloses a method for carrying out alignment on stator part sleeves of a steam turbine by utilizing a laser tracker and relates to a method for carrying out alignment on the stator part sleeves of the steam turbine. The method aims to solve the problems of poor universality, fussy steps and high possibility of influencing assembling accuracy of a currently utilized method for carrying out alignment on the stator part sleeves of the steam turbine by utilizing a dummy shaft or a steel wire. The method comprises the following steps: arranging bearing housings or process bearings at a power end and a regulating end in place according to the center position of a cylinder of the steam turbine; fixing and arranging the laser tracker outside the bearing housings or the process bearings by a triangular support; preheating the laser tracker, carrying out accuracy checking on the laser tracker by utilizing API (Application Programming Interface) tracker calibration software, and starting to measure; establishing a reference axis; calculating a distance from each measuring point to the reference axis by utilizing SA (Spatial-measurement Analysis) software; comparing measured values with an initial design value and if the design requirement is not met, regulating the radial positions of the stator part sleeves and repeating the step 2 to the step 5 until the measured values meet the design requirement. The method is used for carrying out alignment on the stator part sleeves of the steam turbine.
Description
Technical field
The present invention relates to the method for a kind of steam turbine stator section cover alignment.
Background technology
Steam turbine is between the general assembly erecting stage, and the center of each stator section cover has certain requirement (with one heart or exist certain attitude drift amount) in design, and what often take at present is to utilize dummy shaft or steel wire to carry out alignment.The versatility of dummy shaft is poor, and the unit of different model need to be made different dummy shafts, and utilizes the dummy shaft assembling time also to need the manufacturing process bearing, and precision is low.There is the collapse phenomenon of waist of center in steel wire, affects assembly precision.
Summary of the invention
The purpose of this invention is to provide a kind of laser tracker that utilizes to the method for steam turbine stator section cover alignment, utilize at present dummy shaft or steel wire is poor on the method versatility of steam turbine stator section cover alignment, complex steps and easily affect the problem of assembly precision to solve.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: scheme one: step 1: electricity end, the bearing housing of transferring end or technique bearing are pressed the steam turbine center in place, second of the internal sleeve of the stator of steam turbine part tentatively is assembled in the steam turbine surface of cleaning cylinder horizontal flange, perpendicular end surface, each inner circle;
Step 2, laser tracker fixed and be set to the outside of bearing housing or technique bearing with tripod, make the extended line of bearing axis can be through tripod, the height of the laser head of laser tracker will be higher than the horizontal flange 500mm-1000mm of cylinder;
Step 3, the laser tracker plugged is carried out preheating, between warming up period, debug laser tracker, until the laser energy of laser tracker covers the internal circular surfaces of cylinder, front-rear view scrutiny program until the complete rear API of the utilization tracker calibration software of preheating carries out accuracy checking to laser tracker, the same side that the target ball of laser tracker and cylinder are positioned at laser head during accuracy checking, when revolution and angle of pitch error in the accuracy checking result begins measurement all less than 5/1000ths the time; If revolution and the arbitrary error of the angle of pitch are proofreaied and correct laser tracker with the QVC program of API tracker calibration software greater than 5/1000ths among the accuracy checking result, until turn round among the result of accuracy checking and angle of pitch error all less than 5/1000ths, begin measurement;
Step 4, set up datum axis: open the space measurement analysis software, and computing machine connected laser tracker, the mode of the artificial hand-held target ball of utilization is to the electricity end and transfer the bearing of end or the inner circle of technique bearing to adopt respectively a little, the inner circle of each bearing or technique bearing is adopted and a little is no less than 3 cross sections, each cross section is no less than 10 points, and angle of coverage is not less than 170 degree;
Step 5, will adopt point fit to respectively right cylinder, the cylindrical cylindricity of match is greater than 0.015mm, repeating step four, until the cylindrical cylindricity of match is not more than 0.015mm, datum axis is set up at the connecting cylinder center;
Step 6, hand-held target ball, utilize laser tracker to each stator section cover inner circle left and right, the position adopt a little, and utilize the space measurement analysis software to calculate each measurement point to the distance of datum axis;
Step 7, measured value and initial design values are compared, if do not meet design requirement, need to adjust the radial position of stator section cover, repeating step two-step 5 is until measured value satisfies the design needs.
Scheme two: step 1: with the electricity end, to transfer the tilting-pad bearing of end to press the steam turbine center in place, second of the internal sleeve of the stator of steam turbine part tentatively is assembled in the steam turbine surface of cleaning cylinder horizontal flange, perpendicular end surface, each inner circle;
Step 2, laser tracker fixed and be set to the outside of tilting-pad bearing with tripod, make the extended line of tilting-pad bearing center line can be through tripod, the height of the laser head of laser tracker will be higher than the horizontal flange 500mm-1000mm of cylinder;
Step 3, the laser tracker plugged is carried out preheating, preheating 15-20 minute, between warming up period, debug laser tracker, until the laser energy of laser tracker covers the internal circular surfaces of cylinder, front-rear view scrutiny program until the complete rear API of the utilization tracker calibration software of preheating carries out accuracy checking to laser tracker, the same side that the target ball of laser tracker and cylinder are positioned at laser head during accuracy checking, when revolution and angle of pitch error in the accuracy checking result begins measurement all less than 5/1000ths the time; If revolution and the arbitrary error of the angle of pitch are proofreaied and correct laser tracker with the QVC program of API tracker calibration software greater than 5/1000ths among the accuracy checking result, until turn round among the result of accuracy checking and angle of pitch error all less than 5/1000ths, begin measurement;
Step 4, the packing of tilting-pad bearing circle and packing end face are adopted a little, required the circle measurement point to be no less than 10, angle of coverage is not less than 170 degree, and the end surface measurement point is no less than 10, and area coverage is not less than 70% of face area;
Step 5, the end surface measurement point is fitted to the plane, the measurement point of circle is projected on the plane, and fit to circle, when circularity greater than 0.015mm, repeating step four until circularity is not more than 0.015mm, connects the center of circle, sets up datum axis;
Step 6, hand-held target ball, utilize laser tracker to each stator section cover inner circle left and right, the position adopt a little, and utilize the space measurement analysis software to calculate each measurement point to the distance of datum axis;
Step 7, measured value and initial design values are compared, if do not meet design requirement, need to adjust the radial position of stator section cover, repeating step two-step 5 is until measured value satisfies the design needs.
The present invention has following beneficial effect: the inventive method adopts laser tracker to the cover alignment of steam turbine stator section, and does not adopt dummy shaft, saved and made the required cost of dummy shaft, and the precision of alignment is higher, has improved assembly precision.
Embodiment
Embodiment one: present embodiment said method comprising the steps of: step 1: electricity end, the bearing housing of transferring end or technique bearing are pressed the steam turbine center in place, second of the internal sleeve of the stator of steam turbine part tentatively is assembled in the steam turbine surface of cleaning cylinder horizontal flange, perpendicular end surface, each inner circle;
Step 2, laser tracker fixed and be set to the outside of bearing housing or technique bearing with tripod, make the extended line of bearing axis can be through tripod, the height of the laser head of laser tracker will be higher than the horizontal flange 500mm-1000mm of cylinder;
Step 3, the laser tracker plugged is carried out preheating, between warming up period, debug laser tracker, until the laser energy of laser tracker covers the internal circular surfaces of cylinder, front-rear view scrutiny program until the complete rear API of the utilization tracker calibration software of preheating carries out accuracy checking to laser tracker, the same side that the target ball of laser tracker and cylinder are positioned at laser head during accuracy checking, when revolution and angle of pitch error in the accuracy checking result begins measurement all less than 5/1000ths the time; If revolution and the arbitrary error of the angle of pitch are proofreaied and correct laser tracker with the QVC program of API tracker calibration software greater than 5/1000ths among the accuracy checking result, until turn round among the result of accuracy checking and angle of pitch error all less than 5/1000ths, begin measurement;
Step 4, set up datum axis: open the space measurement analysis software, and computing machine connected laser tracker, the mode of the artificial hand-held target ball of utilization is to the electricity end and transfer the bearing of end or the inner circle of technique bearing to adopt respectively a little, the inner circle of each bearing or technique bearing is adopted and a little is no less than 3 cross sections, each cross section is no less than 10 points, and angle of coverage is not less than 170 degree;
Step 5, will adopt point fit to respectively right cylinder, the cylindrical cylindricity of match is greater than 0.015mm, repeating step four, until the cylindrical cylindricity of match is not more than 0.015mm, datum axis is set up at the connecting cylinder center;
Step 6, hand-held target ball, utilize laser tracker to each stator section cover inner circle left and right, the position adopt a little, and utilize the space measurement analysis software to calculate each measurement point to the distance of datum axis;
Step 7, measured value and initial design values are compared, if do not meet design requirement, need to adjust the radial position of stator section cover, repeating step two-step 5 is until measured value satisfies the design needs.
Embodiment two: be 15-20 minute preheating time in the step 3 of present embodiment.This time debugging laser tracker is sufficient.Other steps are identical with embodiment one.
Embodiment three: present embodiment said method comprising the steps of: described method comprises the steps: step 1: with the electricity end, to transfer the tilting-pad bearing of end to press the steam turbine center in place, second of the internal sleeve of the stator of steam turbine part tentatively is assembled in the steam turbine surface of cleaning cylinder horizontal flange, perpendicular end surface, each inner circle;
Step 2, laser tracker fixed and be set to the outside of tilting-pad bearing with tripod, make the extended line of tilting-pad bearing center line can be through tripod, the height of the laser head of laser tracker will be higher than the horizontal flange 500mm-1000mm of cylinder;
Step 3, the laser tracker plugged is carried out preheating, preheating 15-20 minute, between warming up period, debug laser tracker, until the laser energy of laser tracker covers the internal circular surfaces of cylinder, front-rear view scrutiny program until the complete rear API of the utilization tracker calibration software of preheating carries out accuracy checking to laser tracker, the same side that the target ball of laser tracker and cylinder are positioned at laser head during accuracy checking, when revolution and angle of pitch error in the accuracy checking result begins measurement all less than 5/1000ths the time; If revolution and the arbitrary error of the angle of pitch are proofreaied and correct laser tracker with the QVC program of API tracker calibration software greater than 5/1000ths among the accuracy checking result, until turn round among the result of accuracy checking and angle of pitch error all less than 5/1000ths, begin measurement;
Step 4, the packing of tilting-pad bearing circle and packing end face are adopted a little, required the circle measurement point to be no less than 10, angle of coverage is not less than 170 degree, and the end surface measurement point is no less than 10, and area coverage is not less than 70% of face area;
Step 5, the end surface measurement point is fitted to the plane, the measurement point of circle is projected on the plane, and fit to circle, when circularity greater than 0.015mm, repeating step four until circularity is not more than 0.015mm, connects the center of circle, sets up datum axis;
Step 6, hand-held target ball, utilize laser tracker to each stator section cover inner circle left and right, the position adopt a little, and utilize the space measurement analysis software to calculate each measurement point to the distance of datum axis;
Step 7, measured value and initial design values are compared, if do not meet design requirement, need to adjust the radial position of stator section cover, repeating step two-step 5 is until measured value satisfies the design needs.
Embodiment four: be 15-20 minute preheating time in the step 3 of present embodiment.This time debugging laser tracker is sufficient.Other steps are identical with embodiment three.
Claims (4)
1. one kind is utilized laser tracker to the method for steam turbine stator section cover alignment, it is characterized in that described method comprises the steps:
Step 1: electricity end, the bearing housing of transferring end or technique bearing are pressed the steam turbine center in place, second of the internal sleeve of the stator of steam turbine part tentatively is assembled in the steam turbine surface of cleaning cylinder horizontal flange, perpendicular end surface, each inner circle;
Step 2, laser tracker fixed and be set to the outside of bearing housing or technique bearing with tripod, make the extended line of bearing axis can be through tripod, the height of the laser head of laser tracker will be higher than the horizontal flange 500mm-1000mm of cylinder;
Step 3, with the laser tracker plugged, between warming up period, debug laser tracker, until the laser energy of laser tracker covers the internal circular surfaces of cylinder, front-rear view scrutiny program until the complete rear API of the utilization tracker calibration software of preheating carries out accuracy checking to laser tracker, the same side that the target ball of laser tracker and cylinder are positioned at laser head during accuracy checking, when revolution and angle of pitch error in the accuracy checking result begins measurement all less than 5/1000ths the time; If revolution and the arbitrary error of the angle of pitch are proofreaied and correct laser tracker with the QVC program of API tracker calibration software greater than 5/1000ths among the accuracy checking result, until turn round among the result of accuracy checking and angle of pitch error all less than 5/1000ths, begin measurement;
Step 4, set up datum axis: open the space measurement analysis software, and computing machine connected laser tracker, the mode of the artificial hand-held target ball of utilization is to the electricity end and transfer the bearing of end or the inner circle of technique bearing to adopt respectively a little, the inner circle of each bearing or technique bearing is adopted and a little is no less than 3 cross sections, each cross section is no less than 10 points, and angle of coverage is not less than 170 degree;
Step 5, will adopt point fit to respectively right cylinder, the cylindrical cylindricity of match is greater than 0.015mm, repeating step four, until the cylindrical cylindricity of match is not more than 0.015mm, datum axis is set up at the connecting cylinder center;
Step 6, hand-held target ball, utilize laser tracker to each stator section cover inner circle left and right, the position adopt a little, and utilize the space measurement analysis software to calculate each measurement point to the distance of datum axis;
Step 7, measured value and initial design values are compared, if do not meet design requirement, need to adjust the radial position of stator section cover, repeating step two-step 5 is until measured value satisfies the design needs.
2. the described laser tracker that utilizes is characterized in that to the method for steam turbine stator section cover alignment be 15-20 minute preheating time in the step 3 according to claim 1.
3. one kind is utilized laser tracker to the method for steam turbine stator section cover alignment, it is characterized in that described method comprises the steps:
Step 1: with the electricity end, to transfer the tilting-pad bearing of end press the steam turbine center in place, second of the internal sleeve of the stator part of steam turbine tentatively is assembled in the steam turbine, clears up the surface of cylinder horizontal flange, perpendicular end surface, each inner circle:
Step 2, laser tracker fixed and be set to the outside of tilting-pad bearing with tripod, make the extended line of tilting-pad bearing center line can be through tripod, the height of the laser head of laser tracker will be higher than the horizontal flange 500mm-1000mm of cylinder;
Step 3, with the laser tracker plugged, preheating 15-20 minute, between warming up period, debug laser tracker, until the laser energy of laser tracker covers the internal circular surfaces of cylinder, front-rear view scrutiny program until the complete rear API of the utilization tracker calibration software of preheating carries out accuracy checking to laser tracker, the same side that the target ball of laser tracker and cylinder are positioned at laser head during accuracy checking is when revolution and angle of pitch error in the accuracy checking result begins measurement all less than 5/1000ths the time; If revolution and the arbitrary error of the angle of pitch are proofreaied and correct laser tracker with the QVC program of API tracker calibration software greater than 5/1000ths among the accuracy checking result, until turn round among the result of accuracy checking and angle of pitch error all less than 5/1000ths, begin measurement;
Step 4, the packing of tilting-pad bearing circle and packing end face are adopted a little, required the circle measurement point to be no less than 10, angle of coverage is not less than 170 degree, and the end surface measurement point is no less than 10, and area coverage is not less than 70% of face area;
Step 5, the end surface measurement point is fitted to the plane, the measurement point of circle is projected on the plane, and fit to circle, when circularity greater than 0.015mm, repeating step four until circularity is not more than 0.015mm, connects the center of circle, sets up datum axis;
Step 6, hand-held target ball, utilize laser tracker to each stator section cover inner circle left and right, the position adopt a little, and utilize the space measurement analysis software to calculate each measurement point to the distance of datum axis;
Step 7, measured value and initial design values are compared, if do not meet design requirement, need to adjust the radial position of stator section cover, repeating step two-step 5 is until measured value satisfies the design needs.
4. the described laser tracker that utilizes is characterized in that to the method for steam turbine stator section cover alignment be 15-20 minute preheating time in the step 3 according to claim 3.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103512502A (en) * | 2013-10-10 | 2014-01-15 | 哈尔滨汽轮机厂有限责任公司 | Measuring method of turbine bearing box sinkage |
| CN104314624A (en) * | 2014-08-20 | 2015-01-28 | 东方电气集团东方汽轮机有限公司 | Device and method for monitoring center change of air cylinder in process of covering cylinder of steam turbine |
| CN104596420A (en) * | 2015-01-26 | 2015-05-06 | 北京卫星环境工程研究所 | Accurate measurement method for measuring benchmark cubic mirror central point position with laser tracker |
| CN105783753A (en) * | 2016-03-10 | 2016-07-20 | 哈尔滨汽轮机厂有限责任公司 | Method for measuring steam turbine rotor deflection by using laser tracker |
| CN105956234A (en) * | 2016-04-21 | 2016-09-21 | 哈尔滨工业大学 | Virtual detection method of steam turbine assembly based on reverse engineering, and virtual repairing and replacement supplying method based on virtual detection method |
| CN106738500A (en) * | 2016-12-01 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | A kind of installation detection method of wind-powered blade mold pre-embedded bolt flange frock |
| CN107514980A (en) * | 2017-06-23 | 2017-12-26 | 江苏中铁山桥重工有限公司 | A kind of large-scale member erection hanger hole concentricity measurement control method |
| CN108132018A (en) * | 2013-06-20 | 2018-06-08 | 安溪县中磊设备制造有限公司 | A kind of calibration method |
| CN109184819A (en) * | 2018-08-27 | 2019-01-11 | 中广核核电运营有限公司 | A kind of method in laser tracking measurement system measurement steam turbine radial through-flow gap |
| CN109458232A (en) * | 2018-10-16 | 2019-03-12 | 中广核核电运营有限公司 | A method of measurement cylinder partition low-lying area nest and its leaf top resistance vapour piece are concentric |
| CN110253168A (en) * | 2019-07-05 | 2019-09-20 | 哈尔滨电机厂有限责任公司 | A kind of process of steam turbine generator dovetail type positioning bar centering |
| CN110434598A (en) * | 2019-08-26 | 2019-11-12 | 江苏核电有限公司 | A kind of partition board of steam turbine draws steel wire to middle regulator and its method of adjustment |
| CN112360582A (en) * | 2020-10-27 | 2021-02-12 | 国电泉州热电有限公司 | High-medium-pressure non-dummy shaft final assembly method for remanufacturing unit |
| CN113340204A (en) * | 2021-07-14 | 2021-09-03 | 深能合和电力（河源）有限公司 | Method for measuring turbine hot part based on laser measuring instrument |
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| CN108132018A (en) * | 2013-06-20 | 2018-06-08 | 安溪县中磊设备制造有限公司 | A kind of calibration method |
| CN103512502A (en) * | 2013-10-10 | 2014-01-15 | 哈尔滨汽轮机厂有限责任公司 | Measuring method of turbine bearing box sinkage |
| CN104314624A (en) * | 2014-08-20 | 2015-01-28 | 东方电气集团东方汽轮机有限公司 | Device and method for monitoring center change of air cylinder in process of covering cylinder of steam turbine |
| CN104314624B (en) * | 2014-08-20 | 2016-03-23 | 东方电气集团东方汽轮机有限公司 | A kind of device and method of steamer cover cylinder process monitoring central cylindrical change |
| CN104596420A (en) * | 2015-01-26 | 2015-05-06 | 北京卫星环境工程研究所 | Accurate measurement method for measuring benchmark cubic mirror central point position with laser tracker |
| CN104596420B (en) * | 2015-01-26 | 2017-06-16 | 北京卫星环境工程研究所 | The accurate measurement method of laser tracker measuring basis prism square center position |
| CN105783753A (en) * | 2016-03-10 | 2016-07-20 | 哈尔滨汽轮机厂有限责任公司 | Method for measuring steam turbine rotor deflection by using laser tracker |
| CN105956234B (en) * | 2016-04-21 | 2019-01-22 | 哈尔滨工业大学 | Steam turbine portion set virtual detection and repairing method based on reverse-engineering |
| CN105956234A (en) * | 2016-04-21 | 2016-09-21 | 哈尔滨工业大学 | Virtual detection method of steam turbine assembly based on reverse engineering, and virtual repairing and replacement supplying method based on virtual detection method |
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| CN109184819A (en) * | 2018-08-27 | 2019-01-11 | 中广核核电运营有限公司 | A kind of method in laser tracking measurement system measurement steam turbine radial through-flow gap |
| CN109184819B (en) * | 2018-08-27 | 2021-01-05 | 中广核核电运营有限公司 | Method for measuring radial through-flow gap of steam turbine by laser tracking measurement system |
| CN109458232A (en) * | 2018-10-16 | 2019-03-12 | 中广核核电运营有限公司 | A method of measurement cylinder partition low-lying area nest and its leaf top resistance vapour piece are concentric |
| CN109458232B (en) * | 2018-10-16 | 2021-02-12 | 中广核核电运营有限公司 | Method for measuring cylinder partition plate hollow pit and concentricity of leaf top steam-resistant sheet thereof |
| CN110253168A (en) * | 2019-07-05 | 2019-09-20 | 哈尔滨电机厂有限责任公司 | A kind of process of steam turbine generator dovetail type positioning bar centering |
| CN110253168B (en) * | 2019-07-05 | 2021-03-26 | 哈尔滨电机厂有限责任公司 | Process method for aligning dovetail type positioning rib of steam turbine generator |
| CN110434598A (en) * | 2019-08-26 | 2019-11-12 | 江苏核电有限公司 | A kind of partition board of steam turbine draws steel wire to middle regulator and its method of adjustment |
| CN112360582A (en) * | 2020-10-27 | 2021-02-12 | 国电泉州热电有限公司 | High-medium-pressure non-dummy shaft final assembly method for remanufacturing unit |
| CN112360582B (en) * | 2020-10-27 | 2023-01-03 | 国电泉州热电有限公司 | High-medium-pressure non-dummy shaft final assembly method for remanufacturing unit |
| CN113340204A (en) * | 2021-07-14 | 2021-09-03 | 深能合和电力（河源）有限公司 | Method for measuring turbine hot part based on laser measuring instrument |
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Application publication date: 20130227 |