CN107255442B - Large scale hydraulic generator stator based on laser tracking technology installs measurement method - Google Patents
Large scale hydraulic generator stator based on laser tracking technology installs measurement method Download PDFInfo
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- CN107255442B CN107255442B CN201710418433.2A CN201710418433A CN107255442B CN 107255442 B CN107255442 B CN 107255442B CN 201710418433 A CN201710418433 A CN 201710418433A CN 107255442 B CN107255442 B CN 107255442B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention relates to the large scale hydraulic generator stators based on laser tracking technology to install measurement method, its accurate installation fields of measurement for being applied to metal structure and component, especially very big advantage has been played in Large Hydroelectric Set installation, the present invention is successfully applied in stator installment work, has reached good effect.Particular content and effect: laser tracker is introduced, make full use of the advantage that measurement accuracy is high, speed is fast, easy to operate in its short distance, the process of measurement of cooperation stand-alone development can realize the automatic measurements modes such as automatic observation, automatic data collection, real time data processing in stator installation process, improve operating efficiency, reduce human cost, simplify working procedure and construction process, conventional rack is installed, measurement method to industrial digital advances a step, in units' installation, fields of measurement important in inhibiting.
Description
Technical field
The invention belongs to metal structure and the accurate installation fields of measurement of component, and in particular to one kind tracks skill based on laser
The large scale hydraulic generator stator of art installs measurement method, is applied to the installation and detection accurate measurement of large scale hydrogenerator
In.
Background technique
Currently, laser tracker is applied to more and more widely in industrial machinery manufacture installation and detection work,
In the more production for being applied to the large scale structures such as aircraft manufacturing, shipbuilding in China, installation process, but answering in hydropower industry
With also less, applied to there is no precedent in Hydropower Unit installation.We introduce Leica AT402 laser tracker, and (measurement is nominal
Precision ± (15 μm+6 μm/m)), using its high-precision advantage, overall application is installed in measurement in turbine-generator units stator,
Achieve good effect.
Since the requirement of Hydropower Unit stator installation accuracy is very high, the positional accuracy of surveying and locating requires to be less than 0.1mm.Tradition
Stator installation control precision measurement means around survey round frame expansion, survey round frame first is that processing and installation required precision
It is high；Second is that figure is huge, install time-consuming with adjustment；Third is that measurement efficiency is low and precision controlling difficulty is big.And laser tracks
Instrument is small in size, and working space is more casual, and measuring speed is fast, measurement accuracy it is high and it is easy to ensure that, manpower and material resources consumption is few, have compared with
Apparent economic benefit.
It is installed for stator, cooperate self-control workpiece using laser tracker and combines the process of measurement of independent development to stator
The group of bracket is round, assembly, weld, matching component and upper ring plate, lower ring plate have carried out setting out survey, to stator in installation process
The multinomial installation index such as circularity, radius, flatness, verticality carried out detection measurement, achieve good effect.
Summary of the invention
The purpose of the present invention is using laser tracker to play its advantage in large scale water-turbine unit, simplify
Traditional measurement process is employed new technology, new method, and the working efficiency of large scale turbine-generator units precision installation is improved.
In order to realize above-mentioned technical characteristic, the technology used in the present invention is characterized in: based on the big of laser tracking technology
Size hydraulic generator stator install measurement method, it is characterised in that: it the following steps are included:
Step1: cloth surveys SURVEYING CONTROL NETWORK；
Step2: measurement auxiliary mould is developed；
Step3: establishment process of measurement；
Step4: implement measurement method.
Specific steps in the Step1 are as follows:
1) network point designs, and since stator installment work face is related to horizontal and vertical space, this requires measurements to control
Net processed need to meet the erection of different location instrument in installation process；It is calculated and reconnaissance trip mounting portion according to test of many times data
Base control point of 12 datum marks being circular layout as SURVEYING CONTROL NETWORK is laid, and is met in actual measurement in position
Each frame station will guarantee to observe at least four control point simultaneously, and have the extensibility in space, and it is suitable in laser tracker to guarantee
Precision ranging in；
2) control point is buried, in the fitting limit of stator, selection sight is preferable, be not easy by breakage in installation and basis consolidates
Place lay control point, be evenly arranged 12 control points around clipping room basis, then by the steel construction target ball of autonomous Design
Pedestal is directly embedded on the basis of clipping room as control point or reserves steel plate welding with clipping room basis；
3) control net measurement, using the Technology Precision of laser tracker, once sets station, and measures 12 controls simultaneously
It is processed, the space SA is utilized by repeatedly measuring to obtain no less than 6 groups of measurement data using each survey station as one group of measurement data
After analysis software (Spatial Analyzer) obtains control point adjustment to multi-group data progress uniform spaces analysis of uncertainty
Unified coordinate system as high-acruracy survey control net；
4) construction survey system is established, and high-acruracy survey is controlled net conversion into live stator installation system, i.e., specified
New coordinate origin and start of calculation direction；Coordinate origin is stator installation center after it is converted, and starts orientation as stator support processing
The +Y direction provided on part meets the needs of installation process at this point, having built up a set of high-precision construction control network.
Specific steps in the Step2 are as follows:
According to the specific measurement request in scene, a variety of measurement auxiliary tools are had developed, these auxiliary tools are largely
It is difficult to solve organ's tracker single-point setting-out, the slow-footed problem of setting-out, one of single-point lofting tools are suitable for horizontal plane
And precision is not in very high situation, single point precision 0.2mm to 0.5mm, operating speed is very fast, easy to operate.
Specific steps in the Step3 are as follows:
According to live specific requirement, secondary development is carried out to it on the basis of SA software, works out and is suitble to field operation
MP process of measurement (Measure Plan), it can be controlled laser tracker and be carried out automatic measurement with coupled computer, and right
Measurement data is handled in real time, and scene provides measurement result.
Specific steps in the Step4 are as follows:
1) stator installation early period carry out work, including stator support it is in place, assembling, splicing, group circle, leveling, welding
With detection work, main task be exactly accurate measurement thereon, lower ring plate and buttress and circularity, the flatness of intermediate ring flat-plate etc.
Parameter；Concrete operation method is similar, measured surface is directly contacted using laser tracker conjunction measuring target ball, in conjunction with MP program
Related data is measured, while analyzing the deviation of data, is used for construction personnel；
2) the core through screw rod hole hole location setting-out of stator support lower ring plate, upper ring plate sets up instrument at the position for needing setting-out,
Installation measurement coordinate system is set up, all layout point coordinate files are imported, in conjunction with good MP Setting-out procedures prepared in advance, is used
The spot measurement pedestal of independent development carries out setting-out, it can be achieved that hole location automatic positioning, rapid survey, reality to the hole location on design drawing
When display with Measured Coordinates difference carry out accurate settingout；
3) in stator component installation the pushing that carries out refer to, the accurate positioning of key components such as core lamination stack, positioning bar with test
Measurement is received, due to the continuous follow-up of installation, to the serious shielding at control point, needs to establish new control network, Ji Kecong at this time
Basic Control Networks using laser tracker carry out pilot measurement, as the Two-stage control point of part, at this time, predominantly associated component
Detection work, carry out automatic measurement using MP detection program prepared in advance, provide the difference of component, in real time to adjust
It is whole；
4) the body detection measurement work after installing core lamination stack, detects the circularity and verticality of entire body after lamination
Index, guarantee are entirely mounted in a total system, meet poor demand limit, can be in measurement using tracker cooperation software
Show the information such as radius, the height of measurement point.
The steel construction target ball pedestal uses rectangular susceptor, and the rectangular susceptor is mounted on embedded basis by being welded and fixed
Reserved steel plate on, be machined with the first centre bore at the center of rectangular susceptor.
The steel construction target ball pedestal uses cylindrical base, and the center of the cylindrical base is machined with arc center
Hole, the cylindrical base by viscose be bonded and fixed at it is embedded on the basis of.
It includes that tracker target ball and steel rush to the single-point lofting tools, the Surface of Sphere of the tracker target ball and steel bottom
The centre bore of seat, which matches, merges positioning placement tracker target ball, and the upper surface edge of steel base is machined with chamfering, at steel bottom
The lower end surface of seat is uniformly machined with multiple mounting holes around central shaft, strong magnetic iron prop is inlaid with inside mounting hole, in mounting hole
Between through the radial direction of steel base be machined with the observation slot being arranged symmetrically, the height for observing slot is two points of steel base
One of, steel punched through the centre bore of steel base, and the end of steel punching is machined with tapered end, and steel punching constitutes gap with centre bore and matches
It closes.
Magnetic target ball pedestal is installed on the lower part concave profile of the stator lower ring plate, is put on the magnetism target ball pedestal
It is equipped with tracker target ball.
The method have the advantages that:
1, change traditional stator installation working procedure and construction method, using laser tracker instead of survey round frame into
Row in-site measurement has accomplished that measuring speed is fast, precision is high, high-efficient, and human and material resources investment is greatly saved, reduces costs.
2, measurement method and means are similar in the above measurement task, the high-precision control to have had built up
Net sets station with basis, by any position, using different measuring tools, selects corresponding process of measurement.Work complete compared with
For satisfaction, meet required precision, improves operating efficiency.
3, this example primarily illustrates laser tracker measuring technique and applies in stator installation, makes full use of its short distance
The advantage that interior measurement accuracy is high, speed is fast, easy to operate, cooperates the process of measurement of stand-alone development can be in stator installation process
It realizes the automatic measurements modes such as automatic observation, automatic data collection, real time data processing, improves operating efficiency, drop
Low human cost, simplifies working procedure and construction process, conventional rack is installed, measurement method is promoted to industrial digitalization
One step, in units' installation, fields of measurement important in inhibiting.
4, it is installed for stator, cooperate self-control workpiece using laser tracker and combines the process of measurement of independent development to fixed
The group of submounts is round, assembly, weld, matching component and upper ring plate, lower ring plate have carried out setting out survey, to fixed in installation process
The multinomial installation indexs such as circularity, radius, flatness, the verticality of son have carried out detection measurement, achieve good effect.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is that the first of the invention fixes control point pedestal -- the structural schematic diagram of steel construction target ball pedestal.
Fig. 2 is of the invention second fixed control point pedestal -- the structural schematic diagram of steel construction target ball pedestal.
In figure: embedded basis 1, rectangular susceptor 2, the first centre bore 3, cylindrical base 4, arc centre bore 5, viscose 6.
Fig. 3 is the steel base of single-point lofting tools of the invention and the structural schematic diagram that tracker target ball is matched and used.
Fig. 4 is that the steel base of single-point lofting tools of the invention and steel rush the structural schematic diagram matched and used.
In figure: tracker target ball 7, steel base 8, chamfering 9, centre bore 10, observation slot 11, mounting hole 12, tapered end 13,
Steel punching 14.
Fig. 5 is running MP process of measurement surface chart of the invention.
Fig. 6 is target ball mounting structure schematic diagram in stator lower ring plate roundness measurement of the invention.
In figure: stator lower ring plate 15, magnetic target ball pedestal 16, lower part concave profile 17.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Embodiment 1:
As Fig. 1-installs measurement method based on the large scale hydraulic generator stator of laser tracking technology, it is characterised in that:
It the following steps are included:
Step1: cloth surveys SURVEYING CONTROL NETWORK；
Step2: measurement auxiliary mould is developed；
Step3: establishment process of measurement；
Step4: implement measurement method.
Specific steps in the Step1 are as follows:
1) network point designs, and since stator installment work face is related to horizontal and vertical space, this requires measurements to control
Net processed need to meet the erection of different location instrument in installation process；It is calculated and reconnaissance trip mounting portion according to test of many times data
Base control point of 12 datum marks being circular layout as SURVEYING CONTROL NETWORK is laid, and is met in actual measurement in position
Each frame station will guarantee to observe at least four control point simultaneously, and have the extensibility in space, and it is suitable in laser tracker to guarantee
Precision ranging in；
2) control point is buried, in the fitting limit of stator, selection sight is preferable, be not easy by breakage in installation and basis consolidates
Place lay control point, be evenly arranged 12 control points around clipping room basis, then by the steel construction target ball of autonomous Design
Pedestal is directly embedded on the basis of clipping room as control point or reserves steel plate welding with clipping room basis；
3) control net measurement, using the Technology Precision of laser tracker, once sets station, and measures 12 controls simultaneously
It is processed, the space SA is utilized by repeatedly measuring to obtain no less than 6 groups of measurement data using each survey station as one group of measurement data
After analysis software (Spatial Analyzer) obtains control point adjustment to multi-group data progress uniform spaces analysis of uncertainty
Unified coordinate system as high-acruracy survey control net；
4) construction survey system is established, and high-acruracy survey is controlled net conversion into live stator installation system, i.e., specified
New coordinate origin and start of calculation direction；Coordinate origin is stator installation center after it is converted, and starts orientation as stator support processing
The +Y direction provided on part meets the needs of installation process at this point, having built up a set of high-precision construction control network.
Specific steps in the Step2 are as follows:
According to the specific measurement request in scene, a variety of measurement auxiliary tools are had developed, these auxiliary tools are largely
It is difficult to solve organ's tracker single-point setting-out, the slow-footed problem of setting-out, one of single-point lofting tools are suitable for horizontal plane
And precision is not in very high situation, single point precision 0.2mm to 0.5mm, operating speed is very fast, easy to operate.
Specific steps in the Step3 are as follows:
According to live specific requirement, secondary development is carried out to it on the basis of SA software, works out and is suitble to field operation
MP process of measurement (Measure Plan), it can be controlled laser tracker and be carried out automatic measurement with coupled computer, and right
Measurement data is handled in real time, and scene provides measurement result.
Specific steps in the Step4 are as follows:
1) stator installation early period carry out work, including stator support it is in place, assembling, splicing, group circle, leveling, welding
With detection work, main task be exactly accurate measurement thereon, lower ring plate and buttress and circularity, the flatness of intermediate ring flat-plate etc.
Parameter；Concrete operation method is similar, measured surface is directly contacted using laser tracker conjunction measuring target ball, in conjunction with MP program
Related data is measured, while analyzing the deviation of data, is used for construction personnel；
2) the core through screw rod hole hole location setting-out of stator support lower ring plate, upper ring plate sets up instrument at the position for needing setting-out,
Installation measurement coordinate system is set up, all layout point coordinate files are imported, in conjunction with good MP Setting-out procedures prepared in advance, is used
The spot measurement pedestal of independent development carries out setting-out, it can be achieved that hole location automatic positioning, rapid survey, reality to the hole location on design drawing
When display with Measured Coordinates difference carry out accurate settingout；
3) in stator component installation the pushing that carries out refer to, the accurate positioning of key components such as core lamination stack, positioning bar with test
Measurement is received, due to the continuous follow-up of installation, to the serious shielding at control point, needs to establish new control network, Ji Kecong at this time
Basic Control Networks using laser tracker carry out pilot measurement, as the Two-stage control point of part, at this time, predominantly associated component
Detection work, carry out automatic measurement using MP detection program prepared in advance, provide the difference of component, in real time to adjust
It is whole；
4) the body detection measurement work after installing core lamination stack, detects the circularity and verticality of entire body after lamination
Index, guarantee are entirely mounted in a total system, meet poor demand limit, can be in measurement using tracker cooperation software
Show the information such as radius, the height of measurement point.
Embodiment 2:
Such as Fig. 1, the steel construction target ball pedestal uses rectangular susceptor 2, and the rectangular susceptor 2 is mounted on by being welded and fixed
On the reserved steel plate on embedded basis 1, the first centre bore 3 is machined at the center of rectangular susceptor 2.During embedded, by by square
Shape pedestal 2 is weldingly fixed on the reserved steel plate on embedded basis 1, and in specific measurement process, target ball is placed in rectangular susceptor 2
On first centre bore 3.And then 12 control points are evenly arranged around clipping room basis.
Embodiment 3:
Such as Fig. 2, the steel construction target ball pedestal uses cylindrical base 4, and the center of the cylindrical base 4 is machined with arc
Shape centre bore 5, the cylindrical base 4 are bonded and fixed on embedded basis 1 by viscose 6.
Embodiment 4:
Such as Fig. 3,4, it includes that tracker target ball 7 and steel rush 14 to the single-point lofting tools, the circle of the tracker target ball 7
The centre bore 10 of spherical surface and steel base 8, which matches, merges positioning placement tracker target ball 7, and the upper surface edge of steel base 8 adds
Work has chamfering 9, is uniformly machined with multiple mounting holes 12 around central shaft in the lower end surface of steel base 8, inlays inside mounting hole 12
Embedded with strong magnetic iron prop, the radial direction between mounting hole 12 through steel base 8 is machined with the observation slot 11 being arranged symmetrically,
The height for observing slot 11 is the half of steel base 8, and steel punching 14 passes through the centre bore 10 of steel base 8, the end of steel punching 14
Portion is machined with tapered end 13, and steel punching 14 constitutes clearance fit with centre bore 10.
During specifically used:
1, before measurement or setting-out point, the operative upper surface of workpiece should be at horizontal position.
2, when setting-out, first tracker target ball is placed in steel base by steel base in the approximate location of setting-out point
The upper end of centre bore, according to the mobile steel base of measurement result, since measurement accuracy is more demanding, in steel base from setting-out position
Set deviation it is smaller when, should slowly squeeze steel base, to overcome magnetic force, be allowed to be accurately positioned, then remove tracker target ball,
It is inserted into steel punching, then taps steel punching with hand hammer, to demarcate final point.
3, when measuring existing punching point coordinate on workpiece, steel is rushed into insertion steel base, rushes tapered end alignment punching using steel
Point, steel base is positioned, and it is in a vertical state using steel base to guarantee that steel rushes, and is passed through observation slot and is checked tapered end position
It sets, flashlight lighting can be used in insufficient light, be allowed to be correctly aligned and rush a little, then remove steel punching, put tracker target ball
Measurement point position coordinate.
The invention of this set tool provides a kind of solution with setting-out for the Point Measurement on horizontal plane, can protect
Effectively improve operating efficiency under the premise of card claimed accuracy, the scope of application of expanded laser light tracker, be suitable for horizontal plane and
Precision is not single point precision 0.2mm to 0.5mm in very high situation, but operating speed is very fast, easy to operate.
Embodiment 5:
Such as Fig. 5, by SA(Spatial Analyzer) software on the basis of secondary development is carried out to it, establishment is suitble to
The MP process of measurement (Measure Plan) of field operation, it can be controlled laser tracker and be surveyed automatically with coupled computer
Amount, and measurement data is handled in real time, scene provides measurement result, greatly improves operating efficiency, saves people
The investment of power material resources.
Known point azimuth, eyeball azimuth, known point radius and eyeball radius are obtained by software analysis, in turn
Show that corresponding differential seat angle, semidiameter, coordinate difference and radial direction, transverse direction are poor.
Embodiment 7:
Such as Fig. 6, magnetic target ball pedestal 16, the magnetism are installed on the lower part concave profile 17 of the stator lower ring plate 15
Tracker target ball 7 is placed on target ball pedestal 16.
The present invention changes the working procedure and construction method of traditional stator installation, is justified using laser tracker instead of survey
Frame carries out in-site measurement, has accomplished that measuring speed is fast, precision is high, high-efficient, and the human and material resources investment greatly saved reduces
Time cost, reduce survey round frame installation, debugging it is cumbersome.
Claims (8)
1. large scale hydraulic generator stator based on laser tracking technology installs measurement method, it is characterised in that: it include with
Lower step:
Step 1: cloth surveys SURVEYING CONTROL NETWORK；
Step 2: developing measurement auxiliary mould；
Step 3: establishment process of measurement；
Step 4: implementing measurement method；
Specific steps in the step 1 are as follows:
1) network point designs, and since stator installment work face is related to horizontal and vertical space, this requires SURVEYING CONTROL NETWORKs
The erection of different location instrument in installation process need to be met；It is calculated and reconnaissance trip installation position, cloth according to test of many times data
If base control point of 12 datum marks being circular layout as SURVEYING CONTROL NETWORK, and meet each frame in actual measurement
Standing will guarantee to observe at least four control point simultaneously, and have the extensibility in space, guarantee in the suitable precision of laser tracker
In ranging；
2) control point is buried, in the fitting limit of stator, selection sight is preferable, is not easy the ground that by breakage in installation and basis consolidates
The control point Fang Bushe is evenly arranged 12 control points around clipping room basis, then by the steel construction target ball pedestal of autonomous Design
It is directly embedded in as control point on the basis of clipping room or reserves steel plate welding with clipping room basis；
3) control net measurement, using the Technology Precision of laser tracker, once sets station, and measures 12 controls simultaneously
Point, by repeatedly measuring to obtain no less than 6 groups of measurement data, utilizes the space SA point using each survey station as one group of measurement data
Analysis software carries out the unified coordinate system conduct height after uniform spaces analysis of uncertainty obtains control point adjustment to multi-group data
Precision measure controls net；
4) high-acruracy survey is controlled net conversion into live stator installation system, that is, specified newly by construction survey system foundation
Coordinate origin and start of calculation direction；Coordinate origin is stator installation center after it is converted, and starting orientation is on stator support workpiece
The +Y direction provided meets the needs of installation process at this point, having built up a set of high-precision construction control network.
2. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1,
It is characterized in that, the specific steps in the step 2 are as follows:
According to the specific measurement request in scene, using single-point lofting tools, suitable for horizontal plane and precision is not very high situation
Under, single point precision 0.2mm to 0.5mm.
3. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1,
It is characterized in that, the specific steps in the step 3 are as follows:
According to live specific requirement, secondary development is carried out to it on the basis of SA software, works out the MP for being suitble to field operation
Process of measurement, it can be controlled laser tracker and carry out automatic measurement, and be located in real time to measurement data with coupled computer
Reason, scene provides measurement result.
4. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1,
It is characterized in that, the specific steps in the step 4 are as follows:
1) stator installation early period carry out work, including stator support it is in place, assembling, splicing, group circle, leveling, welding and inspection
Survey work, main task be exactly accurate measurement thereon, circularity, the flatness parameter of lower ring plate and buttress and intermediate ring flat-plate；
Concrete operation method is directly to contact measured surface using laser tracker conjunction measuring target ball, measures phase in conjunction with MP program
Data are closed, while analyzing the deviation of data, are used for construction personnel；
2) the core through screw rod hole hole location setting-out of stator support lower ring plate, upper ring plate sets up instrument at the position for needing setting-out, establishes
Installation measurement coordinate system is played, all layout point coordinate files are imported, in conjunction with good MP Setting-out procedures prepared in advance, using autonomous
The spot measurement pedestal of development on design drawing hole location carry out setting-out, it can be achieved that hole location automatic positioning, rapid survey, in real time show
Show and carrys out accurate settingout with Measured Coordinates difference；
3) in stator component installation the pushing that carries out refer to, the accurate positioning and acceptance gauging of core lamination stack, positioning bar key component,
Due to the continuous follow-up of installation, to the serious shielding at control point, need to establish new control network at this time, it can be from base control
Net using laser tracker carry out pilot measurement, as the Two-stage control point of part, at this time, predominantly associated component detection work
Make, carries out automatic measurement using MP detection program prepared in advance, provide the difference of component, in real time to adjust；
4) the body detection after installing core lamination stack measures work, and the circularity and verticality of entire body refer to after detection lamination
Mark, guarantee are entirely mounted in a total system, meet poor demand limit, can be to show in measurement using tracker cooperation software
Show radius, the elevation information of measurement point.
5. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1,
It is characterized in that, the steel construction target ball pedestal uses rectangular susceptor (2), and the rectangular susceptor (2) is mounted on by being welded and fixed
On the reserved steel plate of embedded basis (1), the first centre bore (3) are machined at the center of rectangular susceptor (2).
6. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 1,
It is characterized in that, the steel construction target ball pedestal uses cylindrical base (4), and the center of the cylindrical base (4) is machined with arc
Shape centre bore (5), the cylindrical base (4) are bonded and fixed on embedded basic (1) by viscose (6).
7. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 2,
Be characterized in that, the single-point lofting tools it include tracker target ball (7) He Gangchong (14), the circle of the tracker target ball (7)
The centre bore (10) of spherical surface and steel base (8), which matches, merges positioning placement tracker target ball (7), the upper end of steel base (8)
Face edge is machined with chamfering (9), and multiple mounting holes (12) are uniformly machined with around central shaft in the lower end surface of steel base (8),
It is inlaid with strong magnetic iron prop inside mounting hole (12), the radial direction between mounting hole (12) through steel base (8) is processed
There is the observation slot (11) being arranged symmetrically, the height of observation slot (11) is the half of steel base (8), and steel rushes (14) and passes through steel
The end of the centre bore (10) of pedestal (8) processed, steel punching (14) is machined with tapered end (13), and steel rushes (14) and centre bore (10) and constitutes
Clearance fit.
8. the large scale hydraulic generator stator based on laser tracking technology installs measurement method according to claim 4,
It is characterized in that, magnetic target ball pedestal (16), the magnetic is installed on the lower part concave profile (17) of the stator lower ring plate (15)
Tracker target ball (7) are placed on property target ball pedestal (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418433.2A CN107255442B (en) | 2017-06-06 | 2017-06-06 | Large scale hydraulic generator stator based on laser tracking technology installs measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418433.2A CN107255442B (en) | 2017-06-06 | 2017-06-06 | Large scale hydraulic generator stator based on laser tracking technology installs measurement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107255442A CN107255442A (en) | 2017-10-17 |
| CN107255442B true CN107255442B (en) | 2019-07-19 |
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| CN110057332A (en) * | 2019-05-05 | 2019-07-26 | 大连理工大学 | A kind of test structure assembly precision regulation method based on basis of sensitivity analysis |
| 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 |
| CN112284252B (en) * | 2020-10-16 | 2021-08-24 | 葛洲坝测绘地理信息技术有限公司 | Method for adjusting verticality of rotor center body of hydroelectric generating set |
| CN112284251A (en) * | 2020-10-16 | 2021-01-29 | 葛洲坝测绘地理信息技术有限公司 | Method for precisely measuring installation of stator positioning rib of hydroelectric generating set |
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| CN101716654A (en) * | 2009-12-15 | 2010-06-02 | 宁夏长城须崎铸造有限公司 | New process method for manufacturing mold capable of ensuring size accuracy of cast blade for large-scale water turbine |
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