CN209877851U - Plug-in type tool for measuring air gap between stator and rotor in rotating manner - Google Patents
Plug-in type tool for measuring air gap between stator and rotor in rotating manner Download PDFInfo
- Publication number
- CN209877851U CN209877851U CN201920696152.8U CN201920696152U CN209877851U CN 209877851 U CN209877851 U CN 209877851U CN 201920696152 U CN201920696152 U CN 201920696152U CN 209877851 U CN209877851 U CN 209877851U
- Authority
- CN
- China
- Prior art keywords
- stator
- measuring
- air gap
- rotor
- ring
- Prior art date
- 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.)
- Active
Links
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
An insertion type rotary measuring stator and rotor air gap tool is composed of a measuring ring and a handheld supporting rod, wherein the upper part of the handheld supporting rod is provided with a handle, and the lower part of the handheld supporting rod is fixedly connected with the measuring ring; the section of the measuring ring is in a ring shape, the thickness of the measuring ring is smaller than the minimum radial clearance value between the stator and the rotor by 3mm or more, the diameter of the measuring ring is divided into various specifications according to the size of the clearance value to be measured, the diameter difference is determined according to the precision requirement of the clearance value to be measured, and one specification can be 0.05-0.20 mm; the hand-held support rod is made of steel wires with the diameter phi of 3-4mm, and the total height is 300-400 mm. The utility model has simple structure, convenient manufacture, lower cost and convenient field operation, and the measurement precision can be controlled within 0.05mm and is far less than the central deviation and the air gap deviation value of the unit specified by the standard; the method is also suitable for the condition that the air gap measuring part of the stator and the rotor is blocked.
Description
The technical field is as follows:
the utility model relates to a power station unit equipment fixing technical field, in particular to stator and rotor air gap measures, especially measures the air gap that the position part is sheltered from, specific theory is a bayonet rotatory stator and rotor air gap instrument of measuring.
Background art:
the air gap between the stator and the rotor of the hydropower station is usually measured by using a wedge-shaped plate or a pair of wedge-shaped plates, namely, a color chalk is firstly used for coating the wedge-shaped surface of the uniform wedge-shaped plate and then coloring treatment is carried out. Then inserting the wedge-shaped plate into an air gap between the magnetic pole and the corresponding stator core with a certain force, wherein the center of the wedge-shaped plate is consistent with the outer center of the magnetic pole when the wedge-shaped plate is inserted, the wedge-shaped surface faces the stator core, after the wedge-shaped plate is inserted, the wedge-shaped plate is pressed downwards by hands, when the wedge-shaped plate does not move downwards along the magnetic pole, the wedge-shaped plate is pulled out, the color on the wedge-shaped surface is obviously lightened or lost due to friction at the part where the wedge-shaped surface is contacted with the stator core, a boundary line is formed with the part which is not contacted, the boundary line represents the insertion depth of the wedge-shaped plate, the thickness of the wedge-shaped plate corresponding. In actual construction, on the one hand, because everyone uses the dynamics inconsistent when the wedge-shaped plate inserts, consequently there is great deviation when different personnel measure the air gap, and the deviation reaches 0.20mm and above. On the other hand, the wind shields at the upper end and the lower end of a part of stator of the power station are higher than the surface of a stator core, so that the measurement of air gaps is influenced, the gap value between a magnetic pole and the wind shield is actually the gap value between the magnetic pole and the wind shield by utilizing the air gap value of the stator and the rotor measured by the wedge-shaped plate under the condition, the air gap value between the stator and the rotor cannot be truly reflected, if the air gap value is accurately adjusted, the air gap exceeds the standard, if the deviation seriously influences the vibration and swing data of the unit due to the uneven magnetic tension, and the safe and stable operation of the unit is seriously even influenced.
The invention content is as follows:
the to-be-solved problem of the utility model is exactly to above not enough and provide a bayonet rotatory rotor air clearance instrument of measuring, not only simple structure, field operation are convenient, and measure the accuracy.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a bayonet rotatory rotor air gap instrument of measuring decides, it is by measuring ring, hand-held type support pole and constitutes, and hand-held type support pole upper portion is the handle, and the lower part is connected with the measurement ring.
The section of the measuring ring is in a ring shape, the thickness of the measuring ring is smaller than the minimum radial clearance value between the stator and the rotor by 3mm or more, generally 3-4mm, and the radius of the end part is a fillet of 0.50 mm.
The diameter of the measuring ring is divided into a plurality of specifications according to the size of the gap value to be measured, the diameter difference is determined according to the precision requirement of the gap value to be measured, and 0.05-0.20mm can be adopted as one specification.
The hand-held support rod 2 is made of a steel wire with the diameter phi of 3-4mm, and the total height is 300-400 mm.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. through adopting the utility model discloses measure, ingenious solution decide the difficult problem that rotor air gap is difficult to measurationing.
2. The utility model discloses simple structure, preparation convenience, cost are lower, and convenient to carry, field operation are convenient, measurement of efficiency is high, can carry out stator-rotor air gap fast, accurately and measure, and measurement accuracy is steerable within 0.05mm, is far less than the unit central deviation and the air gap deviation value of standard regulation (minimum is 0.80 mm).
3. The utility model discloses a measure the ring and decide rotor clearance value preparation according to the design, the hand-held type support rod is formed by phi 3-4 mm's steel wire preparation, and measuring range is wide, measures the clearance value and does not receive the restriction of hand-held type support rod diameter.
4. Adopt the utility model discloses measure, do not need additional operations such as mark, consequently no chalk dust drops on the magnetic pole, to the inside pollution-free of generator, does not harm the generator part.
5. The wind shields at the upper end and the lower end of a part of the stator of the power station are higher than the surface of a stator core, so that the measurement of air gaps is influenced, the gap value of a magnetic pole and the wind shields is not the air gap value of the stator and the rotor actually according to the air gap value of the stator and the rotor measured by the wedge-shaped plates, and the size deviation of the surfaces of the wind shields is far larger than the deviation value of the surfaces of the stator core, so that the air gap value of the stator and the rotor cannot be truly reflected. Adopt the utility model discloses measure, can carry out stator rotor air gap accurately and measure, can truly reflect the air gap value of stator and rotor, can not cause the air gap to exceed standard, can not guarantee unit safety and stability operation because of the uneven unit vibration, the throw data that influence of magnetism pulling force.
To sum up, the utility model is not only simple in structure, field operation are convenient, and measure the accuracy. The method is also suitable for the condition that the air gap measurement part of the stator and the rotor is blocked, and can also be applied to the gap measurement under the similar condition.
Description of the drawings:
fig. 1 is a front view of the present invention;
fig. 2 is a left side view of the present invention;
FIG. 3 is a schematic view of the present invention placed in an air gap;
fig. 4 is a schematic view of the measurement after rotation.
Reference numerals:
1-hand-held support rod, 2-measuring ring, 3-rotor, 4-stator, 5-wind shield.
The specific implementation mode is as follows:
the present invention is described in detail below by way of examples, but the present invention is not limited to the examples, and the modifications and adjustments made by those skilled in the art according to the contents of the above-mentioned invention are also within the scope of the present invention.
Referring to fig. 1-4, the utility model provides an insert type rotary measurement stator and rotor air gap tool, which is composed of a measurement ring 2 and a handheld support rod 1, wherein the section of the measurement ring 2 is in a ring shape, the outer diameter is a precision machining size, the thickness is smaller than the minimum radial gap value between a stator 4 and a rotor 3 by 3mm or more, generally 3-4mm is taken, and the end chamfer radius is a 0.50mm fillet; the diameter of the measuring ring 2 is divided into a plurality of specifications according to the size of the gap value to be measured, the diameter difference is determined according to the precision requirement of the gap value to be measured, and 0.05-0.20mm can be adopted as one specification. The hand-held support rod 1 is made of steel wires with the diameter phi of 3-4mm, the total height is about 300-400 mm, the upper part is a handle, and the lower part is welded and fixed with the measuring ring 2. A handheld supporting rod 1 is additionally arranged on a measuring ring 2 of the minimum radial clearance value (the condition that a wind shield 5 at the upper end and the lower end of a stator 4 shields a part of air clearance) between a stator 4 and a rotor 3 with far small thickness, the air clearance is vertically placed in the thickness direction of the measuring ring 2, the measuring ring 2 is rotated to the diameter direction, and the diameter of the measuring ring 2 is utilized to measure the air clearance value. In the measuring process, a plurality of measuring rings 2 with different diameter specifications are required to be matched to realize the quantification of the air gap value of the stator and the rotor.
The specific steps of measuring the air clearance between the stator and the rotor are as follows:
firstly, determining a measuring range according to the designed air gap values of the stator 4 and the rotor 3, and selecting a proper insertion type tool for measuring the air gap between the stator and the rotor in a rotating mode.
And secondly, vertically placing the measuring ring 2 into an air gap corresponding to the center of a rotor magnetic pole along the thickness direction, then rotating the handheld supporting rod 1, and replacing a measuring tool with a diameter larger than that of the measuring ring 2 by one specification (0.05-0.20mm) if the measuring ring 2 can completely pass through the handheld supporting rod.
And thirdly, repeating the action of the second step until the measuring ring 2 can not pass or hairpin completely, and defining the average value of the diameter of the measuring ring 2 at the moment and the diameter of the last measuring ring 2 as the measured value of the air gap of the stator and the rotor.
And fourthly, if the measuring ring 2 can not completely pass through, replacing the measuring tool which is smaller than the measuring ring 2 by one specification (0.05-0.20 mm).
And fifthly, repeating the step four until the measuring ring 2 can completely pass through, and defining the value of the mean value of the diameter of the measuring ring 2 at the moment and the diameter of the last measuring ring 2 as the air gap value of the position stator and the rotor.
And sixthly, sequentially measuring air gap values of the stator 4 and the rotor 3 at other residual positions according to the steps.
Claims (5)
1. An inserting type rotary measuring stator and rotor air gap tool is characterized in that: the tool for measuring the air gap between the stator and the rotor consists of a measuring ring (2) and a handheld supporting rod (1), wherein the upper part of the handheld supporting rod (1) is provided with a handle, and the lower part of the handheld supporting rod is fixedly connected with the measuring ring (2).
2. An insertion-type rotary measuring stator and rotor air gap tool as claimed in claim 1, wherein: the section of the measuring ring (2) is in a ring shape.
3. An insertion-type rotary measuring stator and rotor air gap tool as claimed in claim 1, wherein: the thickness of the measuring ring (2) is smaller than the minimum radial clearance value between the stator (4) and the rotor (3) by 3mm or more, generally 3-4mm, and the end part of the measuring ring is a fillet with the radius of 0.50 mm.
4. An insertion-type rotary measuring stator and rotor air gap tool as claimed in claim 1, wherein: the diameter of the measuring ring (2) is divided into a plurality of specifications according to the size of the gap value to be measured, the diameter difference is determined according to the precision requirement of the gap value to be measured, and 0.05-0.20mm can be adopted as one specification.
5. An insertion-type rotary measuring stator and rotor air gap tool as claimed in claim 1, wherein: the handheld supporting rod (1) is made of steel wires with the diameter phi of 3-4mm, and the total height is 300-400 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696152.8U CN209877851U (en) | 2019-05-16 | 2019-05-16 | Plug-in type tool for measuring air gap between stator and rotor in rotating manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696152.8U CN209877851U (en) | 2019-05-16 | 2019-05-16 | Plug-in type tool for measuring air gap between stator and rotor in rotating manner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209877851U true CN209877851U (en) | 2019-12-31 |
Family
ID=68965469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920696152.8U Active CN209877851U (en) | 2019-05-16 | 2019-05-16 | Plug-in type tool for measuring air gap between stator and rotor in rotating manner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209877851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681000A (en) * | 2020-05-19 | 2021-11-23 | 中冶宝钢技术服务有限公司 | Construction method for controlling gap between upper nozzle and upper sliding plate of tundish |
-
2019
- 2019-05-16 CN CN201920696152.8U patent/CN209877851U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681000A (en) * | 2020-05-19 | 2021-11-23 | 中冶宝钢技术服务有限公司 | Construction method for controlling gap between upper nozzle and upper sliding plate of tundish |
| CN113681000B (en) * | 2020-05-19 | 2024-03-19 | 中冶宝钢技术服务有限公司 | Construction method for controlling gap between water inlet and upper sliding plate of tundish |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204255221U (en) | A kind of device clamp boring positioning rule | |
| CN209877851U (en) | Plug-in type tool for measuring air gap between stator and rotor in rotating manner | |
| CN104374284A (en) | Bearing radial internal clearance measuring instrument | |
| CN209706722U (en) | A kind of adjustable type high position measuring appliance that gear compound graduation circle is measured and crossed | |
| CN203443519U (en) | Circular feeler gauge | |
| CN102601733B (en) | Online conical hole grinding, machining and measuring method for workpieces with large conical holes | |
| CN205482748U (en) | Deep hole squareness measurement device | |
| CN207300125U (en) | A kind of detection device of nozzle hole depth | |
| CN103913262B (en) | A kind of gear division motor torsional moment proving installation | |
| CN202798369U (en) | Stator core perpendicularity detection and correction device | |
| CN106363248B (en) | A kind of self-positioning and grading method for large-scale straight-tooth wheel shaping roll flute | |
| CN201463795U (en) | Special tool for measuring axis coordinate | |
| CN101722324B (en) | Size control method for precision processing of pyramid sleeve and measurement clamping plate | |
| CN208042947U (en) | A kind of flange hole inner diameter measuring device | |
| CN103499259A (en) | 360-degree conductive pole mounting plate positioning ruler and positioning method | |
| CN211651471U (en) | Tool for measuring skewed slot of rotor | |
| CN103033083A (en) | Hole strip, tooling for detecting hole strip and method for processing and detecting hole strip | |
| CN201188077Y (en) | Concentric locating installation ring for torsional specimen | |
| CN203881469U (en) | Torque tester for dental motor | |
| CN204778054U (en) | Can estimate cable drum of cable intercepting length | |
| CN102706254B (en) | Measuring method for sealing groove in small deep hole | |
| CN201297909Y (en) | Internal and external diameter measuring device | |
| CN203281989U (en) | Simple indexing device | |
| CN220288584U (en) | Automatic calibrating device for probe of coating thickness gauge | |
| CN210161450U (en) | Rock sample cutting and fixing device suitable for different sizes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |