CN110398194A - A kind of generator air gap measuring tool and method - Google Patents
A kind of generator air gap measuring tool and method Download PDFInfo
- Publication number
- CN110398194A CN110398194A CN201910717882.6A CN201910717882A CN110398194A CN 110398194 A CN110398194 A CN 110398194A CN 201910717882 A CN201910717882 A CN 201910717882A CN 110398194 A CN110398194 A CN 110398194A
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- piston
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- end cap
- cylinder tube
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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
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/12—Measuring arrangements characterised by the use of fluids for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of generator air gap measuring tool and methods, it includes T-type cylinder tube, the center vertical inner barrel of the T-type cylinder tube is slidably installed and has main piston, the tail portion of the main piston is equipped with piston rod, the main piston is limited by main piston end cap, respectively symmetrically being slidably installed inside two horizontal cylinders perpendicular on the T-type cylinder tube and with center vertical cylinder has the first relay piston and the second relay piston, two relay pistons are all mounted on inside cylinder tube by relay piston end cap respectively, the bottom of the T-type cylinder tube is provided with tank filler sleeve, plug is installed on the tank filler sleeve；The outer end face of first relay piston is fixed with the first relay piston connecting rod, and the outer end face of second relay piston is fixed with the second relay piston connecting rod.This gap measuring tool principle is simple, and convenient for the measurement of the air gap, accuracy that is time saving and energy saving, improving working efficiency and measurement data shortens the equipment Inspection and maintenance period.
Description
Technical field
The present invention relates to a kind of generator air gap measuring tool and methods, belong to self-draining arrangement field.
Background technique
Gap of the generator stator-rotator the air gap between rotor magnetic pole and stator core is the important operation of generator
Parameter can generate shaft current, magnetic pull if rotor non-uniform air-gap, and making bearing-side, stress is serious always, accelerate bearing
Damage, cause vibration and noise, cause loss increase, when serious even rotor mutually wipe, seriously will affect set steady fortune
Row.Existing generator stator-rotator the air gap measuring tool is measured using wedge-shaped feeler gauge or homemade simple measurement tool,
Most of current large-scale mixed power station rotor the air gap measurement is all using wedge-shaped feeler gauge measurement, and feeler gauge is by two parts
It is used cooperatively, when measurement needs two people cooperation could complete, combines feeler gauge be put into rotor gap first, and compression feeler gauge is simultaneously
Relative displacement label (or measurement relative displacement) is carried out at handle, then takes out and feeler gauge is restored to originally according to label
Relative position, finally with the thickness of vernier caliper measurement feeler gauge at this time, feeler gauge thickness is exactly the air gap value measured.
Feeler gauge mensuration has the following problems: 1, measuring process trouble, can just be obtained by handle converted measurement as a result, surveying
Amount is time-consuming big；2. the air gap measures narrow space, it is inconvenient for operation that feeler gauge measures contraposition, data conversion etc., give gauger with
Carry out certain difficulty；2, measurement space light deficiency easily causes deviation of reading and converted measurement error causes greatly measurement result inaccurate
Really；3, institute's band tool is more when measuring, such as vernier caliper, tool small part are easily fallen between rotor, are caused certain
Security risk.
In conclusion it is all using wedge-shaped feeler gauge that large-scale mixed power station rotor the air gap measurement at present is most of
Measurement, feeler gauge have the advantages such as the simple, easy processing of tool, but that there are measurement results is inaccurate, time-consuming and laborious, inconvenient for operation etc. scarce
Point.
Summary of the invention
The object of the present invention is to provide a kind of generator air gap measuring tool and method, this gap measuring tool principles
Simply, convenient for the measurement of the air gap, accuracy that is time saving and energy saving, improving working efficiency and measurement data shortens equipment inspection
Maintenance period.
In order to realize above-mentioned technical characteristic, the object of the present invention is achieved like this: a kind of generator air gap survey
Amount tool, it includes T-type cylinder tube, and the center vertical inner barrel of the T-type cylinder tube is slidably installed and has main piston, institute
The tail portion for stating main piston is equipped with piston rod, and the main piston is limited by main piston end cap, on the T-type cylinder tube and with
Respectively symmetrically being slidably installed inside two perpendicular horizontal cylinders of center vertical cylinder has the first relay piston and second
Relay piston, two relay pistons are all mounted on inside cylinder tube by relay piston end cap respectively, the T-type cylinder tube
Bottom be provided with tank filler sleeve, plug is installed on the tank filler sleeve；The outer end face of first relay piston is fixed with first
Relay piston connecting rod, the outer end face of second relay piston are fixed with the second relay piston connecting rod.
The tail portion of the piston rod is equipped with vertically arranged push rod.
Vernier scale is fixed on the piston rod, the vernier scale matches with scale bar and merges the movement of instruction main piston
Distance, the scale bar are fixedly mounted on the outer wall of main piston rod end cap.
All it is machined with venthole on the main piston end cap and relay piston end cap respectively, the main piston end cap and driven
Piston end cap is all fixed by screws on cylinder tube.
It is close that the position that the main piston, the first relay piston and the second relay piston are matched with cylinder tube is set with first
Seal and the second sealing ring.
First sealing ring uses polytetrafluoroethylene (PTFE) circle, and second sealing ring uses rubber seal.
It is located at the position inside T-type cylinder tube on the piston rod and is provided with limit plate, the limit plate and main piston
End cap matches.
Position that the first relay piston connecting rod and the second relay piston connecting rod are matched with relay piston end cap and
The position that piston rod is matched with main piston end cap is separately provided for the end cap gib block being oriented to piston rod.
It all inlays on the main piston, the first relay piston and the second relay piston and to be equipped with for being oriented to it
Gib block, the gib block are slidably matched with the guide groove composition being arranged in inside T-type cylinder tube.
The method that generator air gap measuring tool measures described in any one, comprising the following steps:
Step 1 pulls piston rod by push rod, and then drives main piston in T-type cylinder tube internal slide, and A chamber is arranged at this time
Gas, B chamber forms vacuum, C chamber and D chamber all air-breathings, and then drives the first relay piston and the second relay piston along T-type cylinder tube
Opposite linear motion, when limit plate is contacted with main piston end cap, main piston, the first relay piston and the second relay piston all stop
Only move；
Step 2 records scale value E at this time according to the position on the rested on scale bar of vernier scale；
Step 3, then above-mentioned entire measuring tool is put at the clearance measurement between rotor magnetic pole and stator core；
Step 4 pushes piston rod, drives master piston motion by piston rod, at this time A chamber air-breathing, the hydraulic oil quilt of B chamber
Compression pushes the first relay piston and the movement of the second relay piston reverse linear, C chamber and the exhaust of D chamber；
Step 5, when the first relay piston connecting rod and the second relay piston connecting rod connect with rotor magnetic pole and stator core simultaneously respectively
When touching, main piston, the first relay piston and the second relay piston all stop moving, and reading obtains vernier scale from scale bar at this time
Result be F；
Step 6 obtains the measurement result of generator air gap, calculation formula eventually by calculation formula are as follows: F-E.
The method have the advantages that:
1, the measurement of this tool is easy to operate, reduces the intermediate conversion of DATA REASONING, now only needs one-shot measurement, operation letter
Single, measurement result operation can be obtained in a people, efficiently solves the efficiency and measurement data of the measurement work of rotor the air gap
Accuracy problem, substantially reduce the measurement working time, improve working efficiency, and measuring accuracy is higher, it is ensured that improve
The accuracy of measurement.
2, principle is simple: the pressure energy for inputting liquid is converted into the working principle of piston linear movement using hydraulic cylinder,
With stronger practicability and reliability；
3, it by above-mentioned T-type cylinder tube, and then ensure that when driving main piston, so that it may the synchronous driven work of drive first
Plug and the second relay piston, and drive the first relay piston connecting rod and the second relay piston connecting rod to stretch out, and then complete corresponding
Measurement process.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is main view of the present invention.
Fig. 2 is main sectional view of the present invention.
Fig. 3 is P direction view in Fig. 1 of the present invention.
Fig. 4 is present invention piston position upset condition figure in measurement process.
In figure: main piston 1, T-type cylinder tube 2, the first relay piston 3, relay piston end cap 4, plug 5, the second driven work
Plug 6, main piston end cap 7, scale bar 8, vernier scale 9, push rod 10, screw 11, gib block 12, the sealing of the first sealing ring 13, second
Circle 14, venthole 15, end cap gib block 16, piston rod 17, the first relay piston connecting rod 18, the second relay piston connecting rod 19,
Limit plate 20.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Embodiment 1:
Fig. 1-4 is please referred to, a kind of generator air gap measuring tool, it includes T-type cylinder tube 2, the T-type cylinder tube 2
Center vertical inner barrel, which is slidably installed, main piston 1, and the tail portion of the main piston 1 is equipped with piston rod 17, described
Main piston 1 is limited by main piston end cap 7, on the T-type cylinder tube 2 and the two horizontal cylinders perpendicular with center vertical cylinder
Internal body portion, which is not slidably installed symmetrically, the first relay piston 3 and the second relay piston 6, and two relay pistons all divide
Not Tong Guo relay piston end cap 4 be mounted on inside cylinder tube, the bottom of the T-type cylinder tube 2 is provided with tank filler sleeve, the oiling
Plug 5 is installed on hole；The outer end face of first relay piston 3 is fixed with the first relay piston connecting rod 18, described second from
The outer end face of piston 6 is fixed with the second relay piston connecting rod 19.By using above-mentioned clearance measurement tool, can be used in sending out
The measurement of motor the air gap, and then traditional feeler gauge measurement method is substituted, the accuracy of working efficiency and measurement data is improved,
Shorten the equipment Inspection and maintenance period.In measurement process, it is only necessary to by first relay piston 3 of the driving of main piston 1 and second from
The synchronous movement of piston 6, and then realize the movement between the first relay piston connecting rod 18 and the second relay piston connecting rod 19, come
Realize the measurement in gap.
Further, the tail portion of the piston rod 17 is equipped with vertically arranged push rod 10.Pass through above-mentioned push rod 10
Piston rod 17 can be easily pushed to move.
Further, vernier scale 9 is fixed on the piston rod 17, the vernier scale 9 merges with the matching of scale bar 8 to be referred to
Show the moving distance of main piston 1, the scale bar 8 is fixedly mounted on the outer wall of main piston rod end cap 7.Pass through above-mentioned scale
Ruler 8 can intuitively reflect the mobile distance of piston rod 17, and then be converted into the reading of gap width.
Further, it is all machined with venthole 15, the master respectively on the main piston end cap 7 and relay piston end cap 4
Piston end cap 7 and relay piston end cap 4 are all fixed on cylinder tube by screw 11.It ensure that just by above-mentioned venthole 15
Normal piston motion.
Further, the position that the main piston 1, the first relay piston 3 and the second relay piston 6 are matched with cylinder tube
It is set with the first sealing ring 13 and the second sealing ring 14.The work of sealing is played by the first sealing ring 13 and the second sealing ring 14
With preventing it from oil leak occurring in measurement process, and then ensure that measurement accuracy.
Further, first sealing ring 13 uses polytetrafluoroethylene (PTFE) circle, and second sealing ring 14 is close using rubber
Seal.It ensure that sealing effect by above-mentioned sealing structure.
Further, the position inside T-type cylinder tube 2 is located on the piston rod 17 and is provided with limit plate 20, it is described
Limit plate 20 is matched with main piston end cap 7.The purpose of limit can be played to main piston 1 by above-mentioned limit plate 20.
Further, the first relay piston connecting rod 18 and the second relay piston connecting rod 19 and 4 phase of relay piston end cap
The position that the position of cooperation and piston rod 17 are matched with main piston end cap 7 is separately provided for being oriented to piston rod
End cap gib block 16.The purpose that guiding can be played to piston rod by above-mentioned end cap gib block 16, prevents it from moving
It rotates during dynamic, and then ensure that measurement accuracy.
Further, all inlayed on the main piston 1, the first relay piston 3 and the second relay piston 6 be equipped with for pair
Its gib block 12 being oriented to, the gib block 12 are slidably matched with the guide groove composition being arranged in inside T-type cylinder tube 2.
It can play the role of guiding to piston by above-mentioned gib block 12, guarantee that it is moved in a straight line always.
Embodiment 2:
The method that generator air gap measuring tool measures described in any one, comprising the following steps:
Step 1 pulls piston rod 17 by push rod 10, and then drives main piston 1 in 2 internal slide of T-type cylinder tube, at this time A
Chamber exhaust, B chamber forms vacuum, C chamber and D chamber all air-breathings, and then drives the first relay piston 3 and the second relay piston 6 along T-type
Cylinder tube 2 moves along a straight line in opposite directions, when limit plate 20 is contacted with main piston end cap 7, main piston 1, the first relay piston 3 and second
Relay piston 6 all stops movement；
Step 2 records scale value E at this time according to the position on the rested on scale bar 8 of vernier scale 9；
Step 3, then above-mentioned entire measuring tool is put at the clearance measurement between rotor magnetic pole and stator core；
Step 4 pushes piston rod 17, drives main piston 1 to move by piston rod 17, A chamber air-breathing at this time, B chamber it is hydraulic
Oil is compressed, and the first relay piston 3 and the movement of 6 reverse linear of the second relay piston, C chamber and the exhaust of D chamber are pushed；
Step 5, when the first relay piston connecting rod 18 and the second relay piston connecting rod 19 are same with rotor magnetic pole and stator core respectively
When contacting, main piston 1, the first relay piston 3 and the second relay piston 6 all stop movement, read from scale bar 8 at this time
Result to vernier scale 9 is F；
Step 6 obtains the measurement result of generator air gap, calculation formula eventually by calculation formula are as follows: F-E.
The principle of the present apparatus are as follows:
The pressure energy for inputting liquid is converted into the working principle of piston linear movement using hydraulic cylinder by the present invention, first by pushing away
Driving main piston 1 is drawn, the first relay piston 3 and the second relay piston 6 linear motion are driven, the limit on driving piston rod
When plate and driving piston end cap contact, initial value E is measured；Again two relay piston straight line fortune will be driven by pushing and pulling main piston 1
It is dynamic, when the first relay piston connecting rod 18, the second relay piston connecting rod 19 are contacted with rotor magnetic pole and stator core simultaneously respectively,
Measure end value F；The measurement result of generator air gap, calculation formula are obtained eventually by calculation formula are as follows: F-E.
Above-described embodiment is used to illustrate the present invention, rather than limits the invention, in spirit of the invention and
In scope of protection of the claims, to any modifications and changes that the present invention makes, protection scope of the present invention is both fallen within.
Claims (10)
1. a kind of generator air gap measuring tool, feature its be: it includes T-type cylinder tube (2), the T-type oil cylinder
The center vertical inner barrel of cylinder (2) is slidably installed and has main piston (1), and the tail portion of the main piston (1) is equipped with piston
Connecting rod (17), the main piston (1) are limited by main piston end cap (7), on the T-type cylinder tube (2) and with center vertical cylinder
Respectively symmetrically being slidably installed inside two perpendicular horizontal cylinders of body has the first relay piston (3) and the second relay piston
(6), two relay pistons are all mounted on inside cylinder tube by relay piston end cap (4) respectively, the T-type cylinder tube
(2) bottom is provided with tank filler sleeve, and plug (5) are equipped on the tank filler sleeve；The outer end face of first relay piston (3) is solid
Surely there is the first relay piston connecting rod (18), the outer end face of second relay piston (6) is fixed with the second relay piston connecting rod
(19).
2. a kind of generator air gap measuring tool according to claim 1, it is characterised in that: the piston rod
(17) tail portion is equipped with vertically arranged push rod (10).
3. a kind of generator air gap measuring tool according to claim 1, it is characterised in that: the piston rod
(17) be fixed on vernier scale (9), the vernier scale (9) and scale bar (8) match merges the movement for indicating main piston (1) away from
From the scale bar (8) is fixedly mounted on the outer wall of main piston rod end cap (7).
4. a kind of generator air gap measuring tool according to claim 1, it is characterised in that: the main piston end cap
(7) and on relay piston end cap (4) it is all machined with respectively venthole (15), the main piston end cap (7) and relay piston end cap
(4) it is all fixed on cylinder tube by screw (11).
5. a kind of generator air gap measuring tool according to claim 1, it is characterised in that: the main piston (1),
The position that first relay piston (3) and the second relay piston (6) are matched with cylinder tube is set with the first sealing ring (13) and
Two sealing rings (14).
6. a kind of generator air gap measuring tool according to claim 5, it is characterised in that: first sealing ring
(13) polytetrafluoroethylene (PTFE) circle is used, second sealing ring (14) uses rubber seal.
7. a kind of generator air gap measuring tool according to claim 1, it is characterised in that: the piston rod
(17) it is located at T-type cylinder tube (2) internal position on to be provided with limit plate (20), the limit plate (20) and main piston end cap
(7) it matches.
8. a kind of generator air gap measuring tool according to claim 1, it is characterised in that: the first driven work
The position and piston rod (17) that plug connecting rod (18) and the second relay piston connecting rod (19) are matched with relay piston end cap (4)
The position matched with main piston end cap (7) is separately provided for the end cap gib block (16) being oriented to piston rod.
9. a kind of generator air gap measuring tool according to claim 1, it is characterised in that: the main piston (1),
The gib block (12) being equipped with for being oriented to it, institute are all inlayed on first relay piston (3) and the second relay piston (6)
It states gib block (12) and is slidably matched with setting in the internal guide groove composition of T-type cylinder tube (2).
10. the method measured using generator air gap measuring tool described in claim 1-9 any one, feature
Be the following steps are included:
Step 1 pulls piston rod (17) by push rod (10), and then drives main piston (1) sliding inside T-type cylinder tube (2)
Dynamic, A chamber is vented at this time, and B chamber forms vacuum, C chamber and D chamber all air-breathings, and then drives the first relay piston (3) and the second driven work
It fills in (6) and moves along a straight line in opposite directions along T-type cylinder tube (2), when limit plate (20) and main piston end cap (7) contact, main piston
(1), the first relay piston (3) and the second relay piston (6) all stop movement；
Step 2 records scale value E at this time according to the position on the rested on scale bar (8) of vernier scale (9)；
Step 3, then above-mentioned entire measuring tool is put at the clearance measurement between rotor magnetic pole and stator core；
Step 4 pushes piston rod (17), is moved by piston rod (17) driving main piston (1), at this time A chamber air-breathing, B chamber
Hydraulic oil compressed, push the first relay piston (3) and the second relay piston (6) reverse linear to move, C chamber and D chamber are vented；
Step 5, when the first relay piston connecting rod (18) and the second relay piston connecting rod (19) respectively with rotor magnetic pole and stator iron
When core contacts simultaneously, main piston (1), the first relay piston (3) and the second relay piston (6) all stop movement, at this time from scale
It is F that reading, which obtains the result of vernier scale (9), on bar (8)；
Step 6 obtains the measurement result of generator air gap, calculation formula eventually by calculation formula are as follows: F-E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717882.6A CN110398194A (en) | 2019-08-05 | 2019-08-05 | A kind of generator air gap measuring tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717882.6A CN110398194A (en) | 2019-08-05 | 2019-08-05 | A kind of generator air gap measuring tool and method |
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| Publication Number | Publication Date |
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| CN110398194A true CN110398194A (en) | 2019-11-01 |
Family
ID=68327417
Family Applications (1)
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| CN201910717882.6A Pending CN110398194A (en) | 2019-08-05 | 2019-08-05 | A kind of generator air gap measuring tool and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879265A (en) * | 2020-07-29 | 2020-11-03 | 高博集团有限公司 | Filter element detection device and method for air filter |
| CN112504081A (en) * | 2020-11-25 | 2021-03-16 | 四川神华天明发电有限责任公司 | Generator stator rotor clearance measuring device |
| CN114057245A (en) * | 2020-07-30 | 2022-02-18 | 中国石油化工股份有限公司 | Pressure energy recovery device |
| CN114234771A (en) * | 2021-11-10 | 2022-03-25 | 华能铜川照金煤电有限公司 | Engine air gap measuring device and measuring method |
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| TW201638556A (en) * | 2014-12-22 | 2016-11-01 | 渥班資產公司 | Gap measuring device and air-gap measurement method for measuring an air-gap thickness, in particular of a generator of a wind turbine |
| CN205860953U (en) * | 2016-07-05 | 2017-01-04 | 国家电网公司 | A kind of generator air gap survey tool |
| CN108020145A (en) * | 2017-11-17 | 2018-05-11 | 中国水利水电第十四工程局有限公司 | A kind of generator stator rotor clearance measurement tool |
| CN208091352U (en) * | 2018-05-15 | 2018-11-13 | 中国长江电力股份有限公司 | A kind of the air gap measurement specific purpose tool |
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| US20060272394A1 (en) * | 2004-04-28 | 2006-12-07 | Asml Holding N.V. | High resolution gas gauge proximity sensor |
| TW201638556A (en) * | 2014-12-22 | 2016-11-01 | 渥班資產公司 | Gap measuring device and air-gap measurement method for measuring an air-gap thickness, in particular of a generator of a wind turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879265A (en) * | 2020-07-29 | 2020-11-03 | 高博集团有限公司 | Filter element detection device and method for air filter |
| CN111879265B (en) * | 2020-07-29 | 2022-03-22 | 高博集团有限公司 | Filter element detection device and method for air filter |
| CN114057245A (en) * | 2020-07-30 | 2022-02-18 | 中国石油化工股份有限公司 | Pressure energy recovery device |
| CN114057245B (en) * | 2020-07-30 | 2023-02-03 | 中国石油化工股份有限公司 | Pressure energy recovery device |
| CN112504081A (en) * | 2020-11-25 | 2021-03-16 | 四川神华天明发电有限责任公司 | Generator stator rotor clearance measuring device |
| CN114234771A (en) * | 2021-11-10 | 2022-03-25 | 华能铜川照金煤电有限公司 | Engine air gap measuring device and measuring method |
| CN114234771B (en) * | 2021-11-10 | 2023-09-19 | 华能铜川照金煤电有限公司 | Engine air gap measuring device and measuring method |
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Application publication date: 20191101 |
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