CN109489527A - A kind of turbine-generator units clearance measurement tool and its measurement method - Google Patents
A kind of turbine-generator units clearance measurement tool and its measurement method Download PDFInfo
- Publication number
- CN109489527A CN109489527A CN201811628846.4A CN201811628846A CN109489527A CN 109489527 A CN109489527 A CN 109489527A CN 201811628846 A CN201811628846 A CN 201811628846A CN 109489527 A CN109489527 A CN 109489527A
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- Prior art keywords
- measuring
- turbine
- air gap
- scale
- generator units
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- 238000000691 measurement method Methods 0.000 title abstract description 5
- 238000005259 measurement Methods 0.000 title description 39
- 210000000078 claw Anatomy 0.000 claims abstract description 41
- 238000013461 design Methods 0.000 claims description 10
- 239000004973 liquid crystal related substance Substances 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000002463 transducing effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 230000002452 interceptive effect Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The present invention relates to a kind of turbine-generator units the air gap measuring tool and its measurement methods, the measuring tool includes main scale, vernier scale, lock-screw and a pair of of measuring claw, the measuring claw be integrally formed at respectively the head side of main scale and vernier scale and symmetrically, the lock-screw is used to fix the position of vernier scale, the measuring tool range is within the scope of 0-50mm, the measuring claw length is more than or equal to 300mm, guarantees that it effectively fathoms as 300mm.It is the turbine-generator units within the scope of 8-50mm that the present invention, which is suitable for measuring the air gap, efficiently solves the problems such as existing gage measuring effective length is insufficient and measuring point limited space is interfered and is unable to measure.
Description
Technical field
The present invention relates to a kind of measuring tools, and in particular to a kind of turbine-generator units clearance measurement tool and its measurement side
Method, being primarily adapted for use in measurement the air gap is the turbine-generator units within the scope of 8-50mm.
Background technique
In the prior art, turbine-generator units the air gap measurement method is to be measured with timber wedge ruler and vernier caliper.
The inclined-plane of timber wedge ruler is filled into pastel ash, makes inclined-plane against insertion among stator core, is subject to certain force when inserting motionless again
Amount is extracted after compressing, and with the thickness at vernier caliper measurement timber wedge ruler inclined-plane and stator core scratch, vernier caliper reading is
The air gap at this.
Since the pressing force applied after the insertion of timber wedge ruler is difficult to accomplish that each measuring point is equally big, and it is difficult accurate judgement wiping
Trace position, therefore measurement error is relatively large, measurement inaccuracy in the air gap influences the judgement of rotor center when generator is installed
And adjustment, cause the air gap uneven, to generate unilateral unbalanced magnetic pull, causes air with the rotation of rotor
Gap period variation, unilateral unbalanced magnetic pull circumferentially make periodically movement, cause unit vibration, influence unit safety
Stable operation.In addition, traditional measurement method is more troublesome, and the unit having needs two timber wedge ruler measurements in a closed series.
Authorization Notice No. is that CN208012476U Chinese invention patent discloses a kind of scratch resistant vernier caliper, is solved only existing
There is vernier caliper exterior measuring measuring jaw bottom end to be sharply easy to scratch workpiece problem in measurement, since measuring claw effective length is insufficient and surveys
Amount position is limited the problems such as interfering, and the measurement of turbine-generator units the air gap can not be carried out as existing vernier caliper.
Summary of the invention
For the existing gage measuring effective length deficiency of solution and measuring point limited space, interferes and be unable to measure
The problems such as, the present invention provides a kind of measuring tool of turbine-generator units the air gap, specific technical solution is as follows:
A kind of measuring tool of turbine-generator units the air gap, including main scale, vernier scale, lock-screw and a pair of of measurement
Pawl composition, the measuring claw are integrally formed at the head side of main scale and vernier scale and symmetrical, the locking screw respectively
The position for fixing vernier scale is followed closely, the measuring tool range is 8- for measuring the air gap within the scope of 0-50mm
Turbine-generator units within the scope of 50mm；The measuring claw length be more than or equal to 300mm, guarantee its effectively fathom for
300mm。
Preferably, the precision of the vernier scale is 0.02mm.
Preferably, measuring tool main scale end is a kind of inclined design and a plush copper is arranged for limiting and checking
Size.The measurement of stator core Yu two vertical planes of magnetic pole, its active strength of end Assurance of Size must be taken into consideration in the design of end
Under the premise of should be as small as possible, measure upper and lower end the air gap when end to put in its constitute upright plane in, if not according to reality
It if situation is designed end, will be unable to measure, therefore structure must assure that it cannot contact measured surface, end first
Face has to be lower than the height of measuring jaw Yu measuring surface contact point, and when measurement will not just be too high to make the measuring surface of measuring jaw because of end
It is in close contact with stator core and influences to measure.
Preferably, measuring claw head side (measuring surface) is a kind of edge of a knife type convex design, and main scale and vernier scale are surveyed
One section of measuring jaw end measuring surface is above measuring claw body height, convenient for measuring and making measuring jaw to be close to measuring surface, without interruption.
Preferably, the present invention can use electronic digital indicator principle, and clearance measurement tool is fabricated to digital display form, lead to
Cross display portion (liquid crystal display) directly reading clearance measurement value specifically can be arranged transducing part and digital display on measuring tool
Part, the transducing part is capacitive displacement transducer, for the variable quantity of displacement to be converted to digital quantity, the digital display part
For liquid crystal display, for showing the digital quantity of measurement.
In the technical program, the length of measuring claw is more than or equal to 300mm, guarantees that it effectively fathoms as 300mm, can
Avoid the interference such as magnetic pole and stator fastening bolt head, bar.When measuring turbine-generator units the air gap, unclamps and adjust screw
Moving cursor ruler, while two of measuring claw being separated, measuring claw is put between power generator rotor magnetic pole and stator core
It (is determined according to unit size) apart from appropriate depth, keeps blade horizontal, protrude into the air gap, two measuring claws are close to magnetic respectively
Pole and iron core first read out the integer before scale zero curve on main scale, that being aligned with main scale groove is read on scale and is carved
Main scale reading and rod reading are measured gap width multiplied by the sum of 0.02 as surveyed air by the reading of line.And in digital display gap
In measuring tool, electronic digital indicator principle can use, clearance measurement value is directly read by display portion (liquid crystal display).
The configuration of the present invention is simple, blade are short, and Yi Shixian is easy to use, and it is insufficient to solve existing gage measuring effective length
And measurement position is limited the problem of interfering and being unable to measure turbine-generator air gap, and can avoid magnetic pole and determine
The interference such as sub- fastening bolt head, bar, measurement is accurate, precision is high, reaches 0.02mm, and using capacitive displacement transducer principle
Gap width is directly read with liquid crystal display digital display.
Detailed description of the invention
Fig. 1 is a kind of turbine-generator air gap measuring tool schematic diagram；
Fig. 2 is to apply diagram using Fig. 1 measuring tool measurement turbine-generator units top and the bottom the air gap；
Fig. 3 is a kind of turbine-generator air gap digital display measuring tool schematic diagram；
Fig. 4 is to apply diagram using Fig. 3 digital display measuring tool measurement turbine-generator units top and the bottom the air gap；
Fig. 5 is measuring tool main scale end and measuring claw design diagram.
Note: for above-mentioned Fig. 1-Fig. 5 measuring claw not by its length is actually drawn, a segment length is omitted in centre.
Specific embodiment
In order to be easier to understand technical solution of the present invention, now in conjunction with attached drawing by the way of specific embodiment, to this hair
Clear, complete description that bright technical solution carries out.It should be noted that embodiment described herein is only that part of the invention is implemented
Example, and whole implementations of non-present invention, the embodiment only have exemplary, and effect is only to mention for auditor and the public
For understanding the more simple and clear mode of the content of present invention, rather than the limitation to technical solution of the present invention.It is not departing from
Under the premise of present inventive concept, all those of ordinary skill in the art do not make creative work with regard to thinkable other implementations
The simple replacement and various change of mode and other pairs of technical solution of the present invention, belong to protection scope of the present invention.
Embodiment 1
It is as shown in Figure 1 a kind of turbine-generator air gap measuring tool, the measuring tool is by main scale, vernier scale, lock
Tight screw, a pair of of measuring claw composition, are connected between main scale and vernier scale by lock-screw, measuring claw is integrally formed at main scale respectively
And the head side and symmetrically of vernier scale, the measurement range of main scale is 0-50mm, is 8- for measuring the air gap
Turbine-generator units within the scope of 50mm；Clearly meter full scale and reading are indicated on main scale, the length of measuring claw is more than or equal to
300mm guarantees that it effectively fathoms as 300mm, and the precision of vernier scale is 0.02mm.As shown in figure 5, the measuring tool main scale
End 1-1 is a kind of inclined-plane and a plush copper is arranged for limiting and checking size, and stator core must be taken into consideration in the design of end
It with the measurement of two vertical planes of magnetic pole, should be as small as possible under the premise of its active strength of end Assurance of Size, measure upper and lower end air
End will put in it and constitute in upright plane when gap, if not according to the actual situation being designed end, will be unable to survey
Amount, therefore structure must assure that it cannot contact measured surface first, end face has to be lower than measuring jaw and measuring surface contact point
Highly, it just because of end will not be too high to that the measuring surface of measuring jaw and stator core is made to influence measurement due to close contact when measurement；
A kind of edge of a knife type convex design of the measuring claw head side 2-2 (measuring surface) of the measuring tool, main scale and vernier scale measuring claw
One section of end measuring surface is above measuring claw body height, convenient for measuring and making measuring jaw to be close to measuring surface, without interruption.
It is illustrated in figure 2 between above-mentioned turbine-generator air gap measuring tool measurement turbine-generator units top and the bottom air
Gap applies diagram.When measurement, loosening slack adjuster measuring claw two sides will be separated, when measuring claw extend into water turbine set air
When gap, the air gap can be measured by moving cursor ruler, keep blade horizontal, measurement is grabbed and is protruded into the air gap, tightly
The magnetic pole and iron core for pasting two sides first read out before scale zero curve integer on main scale, then read on scale and be aligned with main scale groove
That groove reading, by main scale reading and rod reading multiplied by the sum of 0.02 be surveyed air gap value.
The configuration of the present invention is simple, blade are short, and Yi Shixian is easy to use, and it is insufficient to solve existing gage measuring effective length
And measurement position is limited the problem of interfering and being unable to measure turbine-generator air gap, and can avoid magnetic pole and determine
The interference such as sub- fastening bolt head, bar, measurement is accurate, precision is high, reaches 0.02mm.
Embodiment 2
It is illustrated in figure 3 a kind of turbine-generator air gap digital display measuring tool, the measuring tool is by main scale, vernier
Ruler, lock-screw, a pair of of measuring claw, capacitive displacement transducer, liquid crystal display composition, by locking screw between main scale and vernier scale
Nail connection, measuring claw are integrally formed at the head side of main scale and vernier scale and symmetrical, the measurement range of main scale respectively
It is the turbine-generator units within the scope of 8-50mm for measuring the air gap for 0-50mm；Clearly scale model is indicated on main scale
It encloses and reads, the length of measuring claw is more than or equal to 300mm, guarantees that it effectively fathoms as 300mm, the precision of vernier scale is
0.02mm.As shown in figure 5, measuring tool main scale end 1-1 is a kind of inclined-plane and a plush copper is arranged for limiting and checking
The measurement of stator core Yu two vertical planes of magnetic pole, its active strength of end Assurance of Size must be taken into consideration in size, the design of end
Under the premise of should be as small as possible, measure upper and lower end the air gap when end to put in its constitute upright plane in, if not according to reality
It if situation is designed end, will be unable to measure, therefore structure must assure that it cannot contact measured surface, end first
Face has to be lower than the height of measuring jaw Yu measuring surface contact point, and when measurement will not just be too high to make the measuring surface of measuring jaw because of end
It is in close contact with stator core and influences to measure.The measuring claw head side 2-2 (measuring surface) of the measuring tool is a kind of edge of a knife
One section of measuring surface of type convex design, main scale and vernier scale measuring claw end are above measuring claw body height, convenient for measuring and making
Measuring jaw is close to measuring surface, without interruption.
It is empty to be illustrated in figure 4 above-mentioned turbine-generator air gap digital display measuring tool measurement turbine-generator units top and the bottom
Diagram is applied in gas gap, and lock-screw measuring claw two sides will be loosened when measurement to be separated, when measuring claw extend into water turbine set
When the air gap, the air gap can be measured by moving cursor ruler, keep blade horizontal, measurement is grabbed and protrudes into the air gap
In, it is close to the magnetic pole and iron core of two sides, is directly read between surveyed air by capacitive displacement transducer principle and liquid crystal display digital display
Gap value.
The configuration of the present invention is simple, blade are short, and Yi Shixian is easy to use, and it is insufficient to solve existing gage measuring effective length
And measurement position is limited the problem of interfering and being unable to measure turbine-generator air gap, and can avoid magnetic pole and determine
The interference such as sub- fastening bolt head, bar, measurement is accurate, precision is high, reaches 0.02mm.And using capacitive displacement transducer principle
Gap width is directly read with liquid crystal display digital display.
Claims (7)
1. a kind of measuring tool of turbine-generator units the air gap, including main scale, vernier scale, lock-screw and a pair of of measuring claw
Composition, the measuring claw are integrally formed at the head side of main scale and vernier scale and symmetrical, the lock-screw respectively
For fixing the position of vernier scale, which is characterized in that the measuring tool range is within the scope of 0-50mm, for measuring between air
Gap is the turbine-generator units within the scope of 8-50mm；The measuring claw length is more than or equal to 300mm, guarantees that it effectively fathoms
For 300mm.
2. a kind of measuring tool of turbine-generator units the air gap according to claim 1, which is characterized in that the trip
The precision of scale is 0.02mm.
3. a kind of measuring tool of turbine-generator units the air gap according to claim 1 or 2, which is characterized in that institute
The main scale end for stating measuring tool is a kind of inclined design and a plush copper is arranged for limiting and checking size, guarantees end face
Have to be lower than the height of measuring claw Yu measuring surface contact point.
4. a kind of measuring tool of turbine-generator units the air gap according to claim 3, which is characterized in that the institute
Stating measuring claw head side (measuring surface) is a kind of edge of a knife type convex design, the main scale and vernier scale measuring claw end measuring surface
One section is above measuring claw body height.
5. a kind of measuring tool of turbine-generator units the air gap according to claim 3 or 4, which is characterized in that institute
It states and is provided with transducing part and digital display part on measuring tool, the transducing part is capacitive displacement transducer, for that will be displaced
Variable quantity be converted to digital quantity, the digital display part is liquid crystal display, for show the digital quantity measured.
6. a kind of method measured using the turbine-generator units the air gap measuring tool of claim 3 or 4, special
Sign is, measuring claw is put in the distance between power generator rotor magnetic pole and stator core appropriate depth, keeps blade horizontal, adjusts
Whole two measuring claw touch magnetic pole and iron core respectively, first reads out before scale zero curve integer on main scale, reads on scale and main scale
The reading of that groove of groove alignment, main scale reading and rod reading is empty multiplied by the sum of 0.02 as surveyed generating set
Gas gap width.
7. a kind of using the method that turbine-generator units the air gap measuring tool measures described in claim 5, feature
It is, measuring claw is put in into the distance between power generator rotor magnetic pole and stator core appropriate depth, keeps blade horizontal, adjustment
Two measuring claws touch magnetic pole and iron core respectively, and surveyed generating set air gap value is directly read on liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811628846.4A CN109489527A (en) | 2018-12-28 | 2018-12-28 | A kind of turbine-generator units clearance measurement tool and its measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811628846.4A CN109489527A (en) | 2018-12-28 | 2018-12-28 | A kind of turbine-generator units clearance measurement tool and its measurement method |
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| Publication Number | Publication Date |
|---|---|
| CN109489527A true CN109489527A (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811628846.4A Pending CN109489527A (en) | 2018-12-28 | 2018-12-28 | A kind of turbine-generator units clearance measurement tool and its measurement method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266053Y (en) * | 2008-03-19 | 2009-07-01 | 欧俊 | Engaged cursor detection ruler |
| CN207540441U (en) * | 2017-10-23 | 2018-06-26 | 赵茹伊 | Lengthen inner measuring jaw vernier caliper |
| CN208012476U (en) * | 2018-03-08 | 2018-10-26 | 北京安富伟业消防安全检测有限公司 | Scratch resistant vernier caliper |
| CN209623581U (en) * | 2018-12-28 | 2019-11-12 | 大唐观音岩水电开发有限公司 | A kind of measuring tool of turbine-generator units the air gap |
-
2018
- 2018-12-28 CN CN201811628846.4A patent/CN109489527A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266053Y (en) * | 2008-03-19 | 2009-07-01 | 欧俊 | Engaged cursor detection ruler |
| CN207540441U (en) * | 2017-10-23 | 2018-06-26 | 赵茹伊 | Lengthen inner measuring jaw vernier caliper |
| CN208012476U (en) * | 2018-03-08 | 2018-10-26 | 北京安富伟业消防安全检测有限公司 | Scratch resistant vernier caliper |
| CN209623581U (en) * | 2018-12-28 | 2019-11-12 | 大唐观音岩水电开发有限公司 | A kind of measuring tool of turbine-generator units the air gap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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