CN213067396U - Generator stator and rotor air gap measuring tool - Google Patents
Generator stator and rotor air gap measuring tool Download PDFInfo
- Publication number
- CN213067396U CN213067396U CN202022167372.7U CN202022167372U CN213067396U CN 213067396 U CN213067396 U CN 213067396U CN 202022167372 U CN202022167372 U CN 202022167372U CN 213067396 U CN213067396 U CN 213067396U
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- Prior art keywords
- steel
- plastic
- air gap
- plate
- generator stator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 76
- 239000010959 steel Substances 0.000 claims abstract description 76
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 10
- 230000008859 change Effects 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 6
- 230000008520 organization Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000008708 Morus alba Nutrition 0.000 description 1
- 240000000249 Morus alba Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a generator stator and rotor air gap measuring tool, paste the spring between steel sheet and plastic slab including steel sheet, plastic slab and several. The steel plate is arranged below the plastic plate in parallel, one end of the steel plate is perpendicularly welded with a first steel pipe, one end of a second steel pipe is perpendicularly fixed at the upper end of the first steel pipe through a first rotating pipe clamp, the other end of the second steel pipe is fixedly provided with a digital display type dial indicator through a second rotating pipe clamp, and a pointer head on the digital display type dial indicator is perpendicularly aligned to the plastic plate. The utility model discloses utilize the spring between steel sheet and the plastic slab and the digital display percentage table of plastic slab top to measure the change displacement volume between steel sheet and the plastic slab, this generator stator rotor air gap does not have highly adding under the atress condition steel sheet and plastic slab thickness by the spring and subtracts the change displacement volume between steel sheet and the plastic slab and obtain, has reduced measuring error, has shortened measuring time.
Description
Technical Field
The utility model relates to an overhaul instrument of power plant's generator belongs to the inside measurement technical field of generator, specifically is a generator stator and rotor air gap measuring tool.
Background
During present unit overhauls, the maintainer when generator stator rotor air gap is measured to generator inside, mostly adopt in the wooden wedge block stopper advances the clearance, measure the air gap through the wedge block seal of a government organization in old china, because everybody exerts oneself different, and the seal of a government organization in old china is more on the wedge block moreover, cause measuring error great.
The installed capacity of the mulberry river secondary water and electricity limited company is 400MW, install 8 desk lamp bubble through-flow units, because the unit belongs to horizontal unit, it is very inconvenient when the operation in the generator wind tunnel, when measuring generator stator and rotor air gap, adopt wooden wedge piece to pack into in the clearance, through scribbling the chalk dust on the wedge piece, mark out the seal of a government organization in a government, measure the.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the inventor provides a generator stator and rotor air gap measuring tool through further design research, steel plates and plastic plates at two ends of a spring are jacked up by the aid of elasticity of the spring, change displacement between the steel plates and the plastic plates is measured through a digital display type dial indicator above the plastic plates, the change displacement between the steel plates and the plastic plates is subtracted from the height of the spring under the condition that the spring is not stressed and the thickness of the steel plates and the plastic plates, and the obtained data are the generator stator and rotor air gap.
The purpose of the utility model is realized like this:
a generator stator and rotor air gap measuring tool comprises a steel plate, a plastic plate and a plurality of springs adhered between the steel plate and the plastic plate. The steel plate is arranged below the plastic plate in parallel, one end of the steel plate is perpendicularly welded with a first steel pipe, one end of a second steel pipe is perpendicularly fixed at the upper end of the first steel pipe through a first rotating pipe clamp, the other end of the second steel pipe is fixedly provided with a digital display type dial indicator through a second rotating pipe clamp, and a pointer head of the digital display type dial indicator is perpendicularly aligned to the plastic plate.
Further, the steel plate is longer than the plastic plate, and the other end of the steel plate is aligned with one end of the plastic plate.
Furthermore, iron sheets are welded on two sides of the steel plate beside the first steel pipe, and guide grooves are formed in the upper ends of the iron sheets.
Furthermore, a limiting block is pasted on the upper surface of the other end of the plastic plate.
Furthermore, the two ends of the limiting block penetrate through the iron sheets on the two sides of the steel plate and are arranged in the guide grooves.
The utility model discloses a theory of operation:
compression spring places measuring tool between generator stator and the rotor, utilizes the steel sheet and the plastic slab at spring's elasticity jack-up spring both ends, and the distance between steel sheet and the plastic slab is exactly generator stator rotor air gap promptly, measures the change displacement volume between steel sheet and the plastic slab through the digital display percentage table of plastic slab top, subtracts the change displacement volume between steel sheet and the plastic slab by the length under the spring does not have the atress condition with steel sheet and plastic slab thickness, and the data that obtain is generator stator rotor air gap just.
The two ends of the limiting block on the plastic plate penetrate through the iron sheet guide grooves on the two sides of the steel plate, and the plastic plate is prevented from moving left and right under the elastic action of the spring during measurement, so that the plastic plate is guaranteed to slide up and down only in the guide grooves.
The utility model has the advantages that:
the tool utilizes a spring between the steel plate and the plastic plate and a digital display dial indicator above the plastic plate to measure the change displacement between the steel plate and the plastic plate, and the air gap of the stator and the rotor of the generator is obtained by adding the length of the spring under the condition of no stress to the thickness of the steel plate and the plastic plate and subtracting the change displacement between the steel plate and the plastic plate. This instrument adopts digital display percentage table direct measurement to reduce measuring error, and accomplishes the measurement of generator stator and rotor air gap and only need consuming time about 1.0h, has shortened measuring time, has improved work efficiency, has practiced thrift manpower resources.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a top view of the steel plate of the present invention.
Fig. 4 is a schematic view of the iron sheet of the present invention.
Fig. 5 is a top view of the plastic plate of the present invention.
The measuring instrument comprises a steel plate 1, a plastic plate 2, a spring 3, a first steel pipe 4, a first rotating pipe clamp 5, a second steel pipe 6, a second rotating pipe clamp 7, a digital display type dial indicator 8, a pointer head 9, an iron sheet 10, a guide groove 11 and a limiting block 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings in combination with specific embodiments. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in figures 1-5, the generator stator and rotor air gap measuring tool comprises a steel plate 1 with the length of 250mm, the width of 25mm and the thickness of 3mm, a plastic plate 2 with the length of 180mm, the width of 25mm and the thickness of 3mm, and three springs 3 which are adhered between the steel plate 1 and the plastic plate 2, wherein the diameter phi of the springs is 20mm, and the length of the springs is 15 mm. The steel plate 1 is parallelly arranged below the plastic plate 2, a first steel pipe 4 with the diameter phi of 8mm and the length of 40mm is vertically welded at the position of 48mm at one end of the steel plate 1, one end of a second steel pipe 6 with the diameter phi of 8mm and the length of 50mm is vertically fixed at the upper end of the first steel pipe 4 through a first rotating pipe clamp 5 with the diameter phi of 9mm, an explicit dial indicator 8 of the number is fixed at the other end of the second steel pipe 6 through a second rotating pipe clamp 7 with the diameter phi of 9mm, and an indicator needle 9 on the explicit dial indicator 8 is vertically aligned with the plastic plate 2. The steel plate 1 is longer than the plastic plate 2, and the other end of the steel plate 1 is aligned with one end of the plastic plate 2. The welding of 1 both sides of steel sheet on 4 next sides of first steel pipe has height to be 28mm, wide 8mm iron sheet 10 of being, the upper end of iron sheet 10 all is provided with length to be 16mm, wide to be 5mm guide way 11, it has a length to be 35mm, wide to be 5mm, thick plastic strip for 3mm to paste on the other end upper surface of plastic slab 2, stopper 12 promptly, the iron sheet 10 that the both sides of steel sheet 1 were all passed to the both ends of stopper 12 is in guide way 11 for prevent to control under the spring action of spring 3 during the measurement plastic slab 2 and remove, guarantee that plastic slab 2 only slides from top to bottom in guide way 11.
Before measuring the air gap between the stator and the rotor of the generator, firstly checking whether the spring 3 can be normally compressed; whether the plastic plate 2 can normally slide up and down in the guide groove 11; whether the scales of the digital display type dial indicator 8 meet the measurement requirements or not; whether the watch needle 9 on the digital display type dial indicator 8 is vertically aligned with the plastic plate 2 or not; the measuring tool is normally placed, and when the spring 3 is naturally free from stress, the number of the digital display type dial indicator 8 is zero or not. Finally, the length of the spring 3 when it is naturally unstressed and the thickness of the steel plate 1 and the plastic plate 2 are measured, and the sum is 21 mm.
When all parts of the tool are normal, the spring 3 is compressed, the tool is placed between a stator and a rotor of a generator, the steel plate 1 and the plastic plate 2 at two ends of the spring 3 are jacked up by utilizing the elastic force of the spring 3, namely, the distance between the steel plate 1 and the plastic plate 2 is the air gap between the stator and the rotor of the generator, the variable displacement between the steel plate 1 and the plastic plate 2 is measured by a digital display type dial indicator 8 above the plastic plate 2, the variable displacement between the steel plate 1 and the plastic plate 2 is subtracted by the length of the spring 3 without stress plus the thickness of the steel plate 1 and the plastic plate 2, and the obtained data is the air gap between the stator and the rotor. This instrument adopts digital display percentage table 8 direct measurement to reduce measuring error, and accomplishes the measurement of generator stator and rotor air gap and only need consuming time about 1.0h, has shortened measuring time, has improved work efficiency, has practiced thrift manpower resources.
In order to inspect the measuring error of this instrument, adopt the slide caliper in the standard measurement method with the utility model discloses do the contrast, show according to the test result, the utility model discloses the data phase difference that gained data and slide caliper measured only satisfies the measurement requirement in 0.01 mm. The distance between 1 and the plastic slab 2 of slide caliper measuring steel sheet and the utility model discloses the data contrast that the measured value calculated is as follows:
| vernier caliper measurement data | Display data of dial indicator | Calculated data | |
| First set of tests | 13.12 | 7.88 | 13.12 |
| Second set of tests | 12.84 | 8.15 | 12.85 |
| Third set of experiments | 12.98 | 8.01 | 12.99 |
| Fourth group of tests | 13.34 | 7.67 | 13.33 |
| Fifth set of tests | 12.98 | 7.99 | 13.01 |
| Test set six | 12.66 | 8.35 | 12.65 |
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (5)
1. A generator stator and rotor air gap measuring tool is characterized by comprising a steel plate (1), a plastic plate (2) and a plurality of springs (3) adhered between the steel plate (1) and the plastic plate (2); steel sheet (1) parallel mount is in the below of plastic slab (2), the perpendicular welding of one end of steel sheet (1) has first steel pipe (4), the upper end of first steel pipe (4) is rotating second steel pipe (6) one end through first rotation pipe strap (5) vertical fixation, the other end of second steel pipe (6) is rotating pipe strap (7) through the second and is being fixed digital display percentage table (8), the table needle head (9) vertical alignment plastic slab (2) of digital display percentage table (8).
2. Generator stator-rotor air gap measuring tool according to claim 1, characterized in that the steel plate (1) is longer than the plastic plate (2), and the other end of the steel plate (1) is aligned with one end of the plastic plate (2).
3. The generator stator and rotor air gap measuring tool is characterized in that iron sheets (10) are welded on two sides of the steel plate (1) beside the first steel pipe (4), and guide grooves (11) are formed in the upper ends of the iron sheets (10).
4. The generator stator and rotor air gap measuring tool as claimed in claim 2, wherein a limiting block (12) is adhered to the upper surface of the other end of the plastic plate (2).
5. The generator stator and rotor air gap measuring tool according to claim 4, wherein both ends of the limiting block (12) penetrate through the iron sheets (10) on both sides of the steel plate (1) and are arranged in the guide groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022167372.7U CN213067396U (en) | 2020-09-28 | 2020-09-28 | Generator stator and rotor air gap measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022167372.7U CN213067396U (en) | 2020-09-28 | 2020-09-28 | Generator stator and rotor air gap measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213067396U true CN213067396U (en) | 2021-04-27 |
Family
ID=75560869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022167372.7U Withdrawn - After Issue CN213067396U (en) | 2020-09-28 | 2020-09-28 | Generator stator and rotor air gap measuring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213067396U (en) |
-
2020
- 2020-09-28 CN CN202022167372.7U patent/CN213067396U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210427 Effective date of abandoning: 20240119 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20210427 Effective date of abandoning: 20240119 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |