CN107621213A - Device for turbine blade root kerve depth survey - Google Patents
Device for turbine blade root kerve depth survey Download PDFInfo
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- CN107621213A CN107621213A CN201710948146.2A CN201710948146A CN107621213A CN 107621213 A CN107621213 A CN 107621213A CN 201710948146 A CN201710948146 A CN 201710948146A CN 107621213 A CN107621213 A CN 107621213A
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- blade root
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Abstract
The invention provides a kind of device for turbine blade root kerve depth survey, and it can solve the problems, such as that the existing measurement result precision using race gauge measurement blade root kerve is low, measurement stability is poor, measurement efficiency is low.It includes location-plate and dial gauge；It is provided with side by side to table block and tooth shape locating block on the top surface of location-plate, it is parallel with its bottom surface to the top surface of table block and to offering the first through hole vertical with its top surface on table block；Tooth shape locating block with being machined with blade root tooth shape locating face on the side relative to table block, the first tooth working face and tooth top at different levels of the blade root of blade root tooth shape locating face and turbine blade recline；Dial gauge is fixedly mounted on location-plate, and the measurement head of dial gauge sequentially pass through location-plate and first through hole and with the blade root kerve face of turbine blade；The blade root kerve face to be measured of turbine blade is equal to relative to the design theory height of the top surface of location-plate to the height of table block.
Description
Technical field
The present invention relates to turbine Blade Machining fields of measurement, is specially that one kind is used for turbine blade root kerve depth
The device of measurement.
Background technology
The kerve feature of turbine blade is located on blade root bottom surface, the general very little of kerve depth dimensions value, while kerve is deep
It is relatively large relative to blade root tenon tooth, detection difficulty to spend the benchmark of size.Blade and rotor groove after kerve assembling it
Between, after key connection, play a part of fixed leaf position under work or inactive state.The direct shadow of crudy of kerve
The assembling quality of blade is rung, or even has influence on running quality of the Steam Turbine in operation process indirectly, kerve detects accurate
It is stable, for instructing processing, Improving The Quality of Products to have great meaning.
Existing kerve metering system in the industry, is shown in Fig. 1 and Fig. 2, is after using race gauge 13 and blade root alignment measurement, by examining
Survey personnel are using depth gauge rule measurement race gauge 13 and the depth value of theoretical blade root kerve 14.In Fig. 1, H is the bottom of race gauge
Face relative to tooth form design theory value, H1 be the bottom surface of race gauge relative to the actual manufacture value of tooth form, d=H-H1 be wheel
The deviation of the bottom surface of groove gauge；In Fig. 2, under alignment measurement state, h is the bottom surface to theoretical blade root kerve face of race gauge
Design theory value, h1=h-d be the bottom surface of race gauge to the actual measured value in theoretical blade root kerve face, and pass through the meter to h1
Calculate the kerve size for being converted into blade.Following drawback be present in this metering system：First, the theoretical wheel channel profiles of race gauge with
The theoretical blade root profile of blade allows the fit-up gap for having 0.5mm or so even more big on layout design, by the accuracy of manufacture
Theory can be more than by influenceing practical set gap, this meeting strong influence to repeated clamping, the stability of measurement；Second, race amount
The width dimensions of rule are usually the 1/2 ~ 1/3 of blade root width, and excessive width size is added to be influenceed by the accuracy of manufacture, can be caused
There is different degrees of crossing and position in measurement process tooth shape locating face, strong influence measurement accuracy；Third, race gauge is excessive
Appearance and size cause its preponderance, measurement process usually needs an at least people to coordinate adjunct test person to measure, greatly
Have impact on measurement efficiency；In summary, existing measuring method can not meet the increasingly harsh blade quality of production at present and
Efficiency requirements.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of device for turbine blade root kerve depth survey, its
The existing measurement result precision using race gauge measurement blade root kerve of energy solution is low, measurement stability is poor, measurement efficiency is low
Problem, it thereby may be ensured that the assembling quality of turbine blade.
Its technical scheme is such：A kind of device for turbine blade root kerve depth survey, its feature exist
In：It includes location-plate and dial gauge；It is provided with side by side to table block and tooth shape locating block on the top surface of the location-plate, it is described to table
The top surface of block is parallel with its bottom surface and described to offering the first through hole vertical with its top surface on table block；The tooth shape locating block
It is fixedly mounted on the top surface of the location-plate, the tooth shape locating block is machined with leaf with the side relative to table block
First tooth working face of the blade root of rooted tooth shape locating surface, the blade root tooth shape locating face and turbine blade and tooth top at different levels patch
Lean on；The dial gauge is fixedly mounted on the location-plate, and the measurement head of the dial gauge sequentially pass through the location-plate and
The first through hole and with the blade root kerve face of the turbine blade；The height to table block is equal to the steam turbine leaf
The blade root kerve face to be measured of piece relative to the top surface of the location-plate design theory height.
It is further characterized by：
The blade root tooth shape locating face includes the first locating surface and the second locating surface being vertically connected with, and first locating surface is served as reasons
Intilted inclined-plane under up to, second locating surface are outward-dipping inclined-plane from top to bottom, first locating surface with
First tooth working face reclines, and second locating surface reclines with the tooth tops at different levels.
Keyway is offered on the bottom surface of the tooth shape locating block along its length, the top surface of the location-plate, which is provided with, to be determined
Position boss, the positioning boss gap, which coordinates, inserts the keyway, and passes through between the tooth shape locating block and the location-plate
Screw is affixed.
Mounting hole is offered on the positioning boss along its length, is opened up in the keyway of the tooth shape locating block
There are the first screwed hole, the screw to be tightened on after passing through the mounting hole in first screwed hole.
The second through hole with first through hole insertion is offered on the location-plate, the sleeve of the dial gauge passes through folder
Spring is installed in second through hole, and the second spiral shell with the second through hole vertical connection is offered on the side of the location-plate
The folder spring and the dial gauge are fixed on the location-plate by pit, high-head knurling screw through second screwed hole.
The beneficial effects of the invention are as follows：
The measurement apparatus of the blade root kerve depth of the present invention, its first with simulating the theoretical level in blade root kerve face to table block,
Before measurement, simulation zero first is carried out to dial gauge on the basis of the top surface to table block, then removed to table block, by tooth shape locating block
Blade root tooth shape locating face coordinate and abut on blade root and positioned, then the measurement head of dial gauge is acted against to blade root bottom to be measured
On groove face, then the reading of dial gauge is the actual height in blade root kerve face and the difference of theoretical level, can be obtained by conversion
To the depth value of blade root kerve, measurement is quick, conveniently, efficiency high, because tooth shape locating block is by first tooth with blade root
The mode that working face and tooth top at different levels recline is positioned, and not only the processing in blade root tooth shape locating face is easier, Er Qiefang
Just position and measure, improve resetting, the stability of measurement, greatly evaded and crossed positioning to shadow caused by measurement accuracy
Ring, drastically increase the degree of accuracy and the stability of the measurement of blade root kerve.
Brief description of the drawings
Fig. 1 is the front view of existing race gauge；
Fig. 2 is the schematic diagram that blade root kerve is measured using existing race gauge；
Fig. 3 is the front view of the present invention；
Fig. 4 is the left view of tooth shape locating block in Fig. 3；
Fig. 5 is the upward view of tooth shape locating block in Fig. 3；
Fig. 6 is the front view of location-plate；
Fig. 7 is Fig. 6 top view；
Fig. 8 is the top view that spring is pressed from both sides in Fig. 3；
Fig. 9 is the schematic diagram using the measurement device blade root kerve of the present invention.
Reference：1- location-plates；1-1- positioning boss；1-2- mounting holes；The through holes of 1-3- second；The screw threads of 1-4- second
Hole；2- tooth shape locating blocks；2-1- blade root tooth shape locatings face；The locating surfaces of 2-1-1- first；The locating surfaces of 2-1-2- second；2-2- keys
Groove；The screwed holes of 2-3- first；3- dial gauges；3-1- measurement heads；3-2- sleeves；4- is to table block；4-1- first through hole；5-1- first
Grain tooth working face；5-2- tooth tops at different levels；7- screws；8- presss from both sides spring；8-1- longitudinal breach；9- high-head knurling screws；A- blade root kerves
Face relative to the top surface of location-plate design theory height；Height of the b- to table block；13- blade roots；14- blade root kerves；14-1- leaves
Foundation groove face.
Embodiment
See Fig. 3 ~ 9, a kind of device for turbine blade root kerve depth survey of the invention, it includes location-plate
1 and dial gauge 3；It is provided with side by side to table block 4 and tooth shape locating block 2 on the top surface of location-plate 1, to top surface and its bottom surface of table block 4
It is parallel and to offering the first through hole 4-1 vertical with its top surface on table block 4；Tooth shape locating block 2 is fixedly mounted on location-plate 1
On top surface, tooth shape locating block 2 with being machined with blade root tooth shape locating face 2-1, blade root tooth shape locating on the side relative to table block 4
Face 2-1 includes the first locating surface 2-1-1 being vertically connected with and the second locating surface 2-1-2, the first locating surface 2-1-1 for from top to bottom
Intilted inclined-plane, the second locating surface 2-1-2 are inclined-plane outward-dipping from top to bottom, the first locating surface 2-1-1 and steamer
First tooth working face 5-1 of the blade root 13 of machine blade reclines, the blade root 13 of the second locating surface 2-1-2 and turbine blade it is each
Level tooth top 5-2 reclines；Dial gauge 3 is fixedly mounted on location-plate 1, and the measurement head 3-1 of dial gauge 3 sequentially passes through location-plate 1
With first through hole 4-1 and with the face of blade root kerve 14 of turbine blade；Waiting for turbine blade is equal to the height b of table block 4
Survey design theory height as of the blade root kerve face 14-1 relative to the top surface of location-plate 1.
See Fig. 3, Fig. 4, Fig. 6 and Fig. 7, offer keyway 2-2 on the bottom surface of tooth shape locating block 2 along its length, position
The top surface of plate 1 is provided with positioning boss 1-1, and positioning boss 1-1 coordinates insertion keyway 2-2 the two is pasted each other with H7/g6 gaps
Close, and it is affixed by screw 7 between tooth shape locating block 2 and location-plate 1.It is so designed that, it can be ensured that tooth shape locating block and positioning
More accurately positioned between plate and fixed.
See Fig. 3, Fig. 5 and Fig. 7, offer mounting hole 1-2 on positioning boss 1-1 along its length, tooth shape locating block 2
The first screwed hole 2-3 is offered in keyway 2-2, screw 7 is tightened in the first screwed hole 2-3 after passing through mounting hole 1-2.Work as needs
, it is necessary to change matching tooth shape locating block when being positioned to various sizes of blade root, but on different rectangle locating pieces
The position of the first screwed hole may have deviation, by designing mounting hole, location-plate can be made to can adapt to different tooth shape locatings
Block, improve the versatility of location-plate.
See Fig. 3, Fig. 6 ~ Fig. 8, the second through hole 1-3 with first through hole 4-1 insertions is offered on location-plate 1, dial gauge 3
Sleeve 3-2 is installed in the second through hole 1-3 by pressing from both sides spring 8, and folder spring 8 is the round tube shape structure with longitudinal breach 8-1, presss from both sides spring 8
In the second through hole 1-3；The second screwed hole 1- with the second through hole 1-3 vertical connections is offered on the side of location-plate 1
4, high-head knurling screw 9 will press from both sides spring 8 through the second screwed hole 1-4 and dial gauge 3 is fixed on location-plate 1.It is so designed that, is easy to
Positioning, the installation and removal of dial gauge.
The lower process that turbine blade root kerve depth is measured using apparatus of the present invention is detailed below：First to hundred
Table is divided to enter 3 rows simulation rezero operation：Take a standard gauge block to lie against on the top surface to table block 4, then make the measurement of dial gauge 3
Head 3-1 is contacted with the bottom surface of standard gauge block, and dial gauge 3 is zeroed, standard gauge block is removed and table block 4 is completed to dial gauge 3
Simulate rezero operation；Turbine blade to be measured is lain against in detection platform, the tooth shape locating block 2 of the present apparatus is close to blade root
13, blade root tooth shape locating face 2-1 the first locating surface 2-1-1 is abutted on first tooth working face 5-1, the second locating surface 2-
1-2 is abutted on tooth top 5-2 at different levels, then makes steamers of the measurement head 3-1 of dial gauge 3 directly with being assemblied in the present apparatus
The blade root kerve face 14-1 to be measured contacts of machine blade, directly read the reading on dial gauge 3, you can obtain blade root kerve face 14-1
Actual height and theoretical level difference, the depth value of blade root kerve 14 can obtain by conversion.
Claims (5)
- A kind of 1. device for turbine blade root kerve depth survey, it is characterised in that：It includes location-plate and percentage Table；It is provided with side by side on the top surface of the location-plate parallel with its bottom surface to table block and tooth shape locating block, the top surface to table block It is and described to offering the first through hole vertical with its top surface on table block；The tooth shape locating block is fixedly mounted on the location-plate Top surface on, the tooth shape locating block is machined with blade root tooth shape locating face, the leaf with the side relative to table block First tooth working face of the blade root of rooted tooth shape locating surface and turbine blade and tooth top at different levels recline；The dial gauge fixes peace On the location-plate, and the measurement head of the dial gauge sequentially pass through the location-plate and the first through hole and with it is described The blade root kerve face of turbine blade；The height to table block is equal to the blade root kerve face phase to be measured of the turbine blade For the design theory height of the top surface of the location-plate.
- A kind of 2. device for turbine blade root kerve depth survey according to claim 1, it is characterised in that： The blade root tooth shape locating face includes the first locating surface and the second locating surface being vertically connected with, and first locating surface is by up to Under intilted inclined-plane, second locating surface is outward-dipping inclined-plane from top to bottom, first locating surface with it is described First tooth working face reclines, and second locating surface reclines with the tooth tops at different levels.
- 3. a kind of device for turbine blade root kerve depth survey according to claim 1 or 2, its feature exist In：Keyway is offered on the bottom surface of the tooth shape locating block along its length, the top surface of the location-plate is provided with convex Platform, the positioning boss gap, which coordinates, inserts the keyway, and passes through screw between the tooth shape locating block and the location-plate It is affixed.
- A kind of 4. device for turbine blade root kerve depth survey according to claim 3, it is characterised in that： Mounting hole is offered on the positioning boss along its length, the first spiral shell is offered in the keyway of the tooth shape locating block Pit, the screw are tightened in first screwed hole after passing through the mounting hole.
- 5. a kind of device for turbine blade root kerve depth survey according to claim 1,2 or 4, its feature It is：The second through hole with first through hole insertion is offered on the location-plate, the sleeve of the dial gauge is by pressing from both sides spring It is installed in second through hole, the second screw thread with the second through hole vertical connection is offered on the side of the location-plate The folder spring and the dial gauge are fixed on the location-plate by hole, high-head knurling screw through second screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948146.2A CN107621213B (en) | 2017-10-12 | 2017-10-12 | Device for turbine blade root kerve depth measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948146.2A CN107621213B (en) | 2017-10-12 | 2017-10-12 | Device for turbine blade root kerve depth measurement |
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| Publication Number | Publication Date |
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| CN107621213A true CN107621213A (en) | 2018-01-23 |
| CN107621213B CN107621213B (en) | 2019-09-03 |
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| CN201710948146.2A Active CN107621213B (en) | 2017-10-12 | 2017-10-12 | Device for turbine blade root kerve depth measurement |
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Cited By (4)
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| CN109373849A (en) * | 2018-12-10 | 2019-02-22 | 无锡透平叶片有限公司 | Bacterium shape blade root detection device |
| CN109974563A (en) * | 2019-05-06 | 2019-07-05 | 广西玉柴机器股份有限公司 | A kind of cylinders of cylinder block orifice ring groove depth detection special gauge |
| CN113624117A (en) * | 2021-08-12 | 2021-11-09 | 南京知博测控技术有限公司 | Blade root size detection device and method for steam turbine rotor blade |
| CN114888610A (en) * | 2022-05-31 | 2022-08-12 | 哈尔滨汽轮机厂有限责任公司 | Tooth-shaped positioning block for positioning blade and clamping and aligning method for machining blade steam passage |
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| CN109974563A (en) * | 2019-05-06 | 2019-07-05 | 广西玉柴机器股份有限公司 | A kind of cylinders of cylinder block orifice ring groove depth detection special gauge |
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| CN114888610A (en) * | 2022-05-31 | 2022-08-12 | 哈尔滨汽轮机厂有限责任公司 | Tooth-shaped positioning block for positioning blade and clamping and aligning method for machining blade steam passage |
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