CN216977765U - Power plant steam turbine shafting centering device - Google Patents
Power plant steam turbine shafting centering device Download PDFInfo
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- CN216977765U CN216977765U CN202220637292.XU CN202220637292U CN216977765U CN 216977765 U CN216977765 U CN 216977765U CN 202220637292 U CN202220637292 U CN 202220637292U CN 216977765 U CN216977765 U CN 216977765U
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- fixed wheel
- mounting frame
- dial indicator
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- 230000008719 thickening Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012951 Remeasurement Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to a power plant steam turbine shafting centering device which is arranged on a pair of wheels and comprises a first mounting frame and a second mounting frame, wherein the first mounting frame and the second mounting frame both comprise a connecting cylinder and an L-shaped rod, the pair of wheels comprise a first fixed wheel and a second fixed wheel, bolts are arranged on the pair of wheels, jacks and fastening screw holes are respectively formed in the horizontal end and the vertical end of the L-shaped rod, the fastening screw holes are perpendicular to the jacks and communicated with the jacks, a first dial indicator and a second dial indicator are arranged on the first mounting frame, fastening screws are arranged in the fastening screw holes and used for fixing the dial indicators, a third dial indicator is arranged on the second mounting frame, corresponding through pin holes are formed in the first fixed wheel and the second fixed wheel, and a pair of wheel through pin penetrates through the through pin holes. The utility model has simple operation and high measurement precision, and simultaneously improves the safety of equipment operation.
Description
Technical Field
The utility model belongs to the technical field of auxiliary adjusting devices of steam turbine shafts, and particularly relates to a device for centering a steam turbine shaft system of a power plant.
Background
The adjacent shafts of the steam turbine are connected through a pair wheel, the pair wheel is called a coupler, the adjacent shafts of the steam turbine need to be centered before use, and if the centering is not carried out, equipment vibration can exceed the standard after the equipment runs, so that the equipment is damaged, and unsafe events can occur. The shaft center measurement and adjustment of a conventional steam turbine body shaft system are carried out by using a dial indicator method and a clearance gauge measurement method, along with the continuous improvement of the unit capacity, the steam turbine types are continuously increased, the shaft system structure type and the connection part are greatly changed, the internal parts of a steam turbine cylinder are more compact, the fit clearance is reduced, the axial displacement amount during maintenance is reduced, the measurement precision is required to be higher, and in the whole maintenance period, especially under the process requirement that the rotor center positioning, the shaft system raising degree, the hollow pit and the steam seal full-solid cylinder which are closest to the operation and the state of the unit are subjected to open-close work measurement adjustment, the measurement adjustment of the central data of the steam turbine shaft system is required to be carried out for many times, and the workload is larger.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a device for finding the center of a turbine shafting of a power plant, which is simple to operate, high in measurement precision and capable of improving the safety of equipment operation.
The technical scheme adopted by the utility model is as follows: a device for finding the center of a shaft system of a steam turbine in a power plant is arranged on a pair of wheels and comprises a first mounting frame and a second mounting frame, wherein the first mounting frame and the second mounting frame respectively comprise a connecting cylinder and an L-shaped rod, one end of the L-shaped rod is fixedly connected with the side surface of the connecting cylinder, the pair of wheels comprise a first fixed wheel and a second fixed wheel, mounting holes are respectively formed in two ends of the first fixed wheel and the second fixed wheel, the mounting holes in the first fixed wheel and the second fixed wheel are respectively corresponding to each other, the two connecting cylinders are respectively arranged at two mounting holes of the first fixed wheel, a bolt is arranged on the pair of wheels, the tail end of the bolt sequentially penetrates through the connecting cylinder and the mounting holes and is in threaded connection with a nut, one end, far away from the connecting cylinder, of the L-shaped rod faces the second fixed wheel, and a jack and a fastening screw hole are respectively formed in the horizontal end and the vertical end of the L-shaped rod, the fastening screw hole is perpendicular to the jack and communicated with the jack, a first dial indicator and a second dial indicator are arranged on the first mounting frame, measuring rods of the first dial indicator and the second dial indicator respectively penetrate through the two jacks on the first mounting frame and respectively abut against the end face and the rim of the first fixed wheel, fastening screws are arranged in the fastening screw hole and used for fixing the dial indicators, a third dial indicator is arranged on the second mounting frame, the measuring rod of the third dial indicator penetrates through the jack on the second mounting frame and abuts against the end face of the first fixed wheel, corresponding penetrating pin holes are formed in the first fixed wheel and the second fixed wheel, and a pair of penetrating pin is arranged in the penetrating pin holes in a penetrating mode.
Preferably, thickening sheets are arranged between the connecting cylinder and the mounting hole, the bolt sequentially penetrates through the connecting cylinder, the thickening sheets and the mounting hole, the thickness of each thickening sheet is 10mm, and one or more thickening sheets are arranged.
Preferably, the precision of the first dial indicator, the precision of the second dial indicator and the precision of the third dial indicator are all 0.01mm, and the measuring range is all 2-3 mm.
Preferably, the first mounting frame and the second mounting frame both adopt square steel frames.
The utility model has the beneficial effects that: according to the utility model, only two mounting frames and three dial indicators are needed to be mounted on the paired wheels, so that the steam turbine shafting can be measured and centered, the measurement result is obtained by adjusting and observing the readings of the three dial indicators, and the thicknesses of the gaskets at the bottom and two sides of the bearing bush of the bearing are adjusted according to the measurement result, so that the centering purpose is realized.
Drawings
Fig. 1 is a schematic view of the mounting structure of the present invention.
In the figure: 1. the device comprises a first mounting frame 2, a second mounting frame 3, a connecting cylinder 4, an L-shaped rod 5, a first fixed wheel 6, a second fixed wheel 7, a bolt 8, a nut 9, a first dial indicator 10, a second dial indicator 11, a fastening screw 12, a third dial indicator 13, a pair wheel through pin 14 and a thickening sheet.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, belong to the protection scope of the present invention, and are specifically described below with reference to the embodiments.
As shown in figure 1, the power plant steam turbine shafting centering device is arranged on a pair of wheels and comprises a first mounting frame 1 and a second mounting frame 2, wherein the first mounting frame 1 and the second mounting frame 2 both comprise a connecting cylinder 3 and an L-shaped rod 4, one end of the L-shaped rod 4 is fixedly connected with the side surface of the connecting cylinder 3, the pair of wheels comprises a first fixed wheel 5 and a second fixed wheel 6, mounting holes are respectively formed in both ends of the first fixed wheel 5 and the second fixed wheel 6, the mounting holes in the first fixed wheel 5 and the second fixed wheel 6 are respectively corresponding to each other, the two connecting cylinders 3 are respectively arranged at two mounting holes of the first fixed wheel 5, bolts 7 are arranged on the pair of wheels, the tail ends of the bolts 7 sequentially penetrate through the connecting cylinder 3 and the mounting holes and are in threaded connection with nuts 8, one end, far away from the connecting cylinder 3, of the L-shaped rod 4 faces the second fixed wheel 6, the horizontal end and the vertical end of the L-shaped rod 4 are both provided with an insertion hole and a fastening screw hole, the fastening screw hole is vertical to the insertion hole and is communicated with the insertion hole, a first dial indicator 9 and a second dial indicator 10 are arranged on the first mounting frame 1, measuring rods of the first dial indicator 9 and the second dial indicator 10 respectively penetrate through two jacks on the first mounting frame 1 and respectively abut against the end face and the rim of the first fixed wheel 5, a fastening screw 11 is arranged in the fastening screw hole, the fastening screw 11 is used for fixing the dial indicator, a third dial indicator 12 is arranged on the second mounting frame 2, a measuring rod of the third dial indicator 12 penetrates through the jack on the second mounting frame 2 and abuts against the end face of the first fixed wheel 5, the first fixed wheel 5 and the second fixed wheel 6 are provided with corresponding through pin holes, and a pair of wheel through pins 13 penetrate through the through pin holes.
For better effect, be provided with thickening piece 14 between connecting cylinder 3 and the mounting hole, bolt 7 passes connecting cylinder 3, thickening piece 14 and mounting hole in proper order, thickening piece 14's thickness is 10mm, thickening piece 14 is provided with one or more for adjust the distance between the measuring stick of percentage table and the pair wheel.
For better effect, the precision of the first dial indicator 9, the second dial indicator 10 and the third dial indicator 12 is 0.01mm, the measuring range is 2-3mm, and more accurate measurement data can be obtained, so that the centering is more accurate.
For better effect, first mounting bracket 1 and second mounting bracket 2 all adopt the square steel frame, and the steadiness is good, and is durable.
When the steam turbine shaft system centering device is used, a first mounting frame 1, a second mounting frame 2 and three dial indicators are correspondingly mounted, after mounting, the small needle of each dial indicator is positioned in the middle of a measuring range, a pair wheel penetrating pin 13 is mounted, a second dial indicator 10 is rotated to the highest point, the pair wheel penetrating pin 13 is taken down, the large needle of each dial indicator is adjusted to the 0 scale, the pair wheel penetrating pin 13 is mounted again, trial rotation is carried out, a rotor (not shown in the figure) is turned for one circle, the pair wheel penetrating pin 13 is taken down, the readings of the three dial indicators are checked, if the readings do not change, the trial rotation meets the requirement, the pair wheel penetrating pin 13 is added again, the rotor is rotated by 90 degrees, the pair wheel penetrating pin 13 is taken down, the numerical values of the three dial indicators in four directions, the upper direction, the left direction and the right direction are obtained and recorded, the numerical values of the three dial indicators in the upper direction, the left direction and right direction are sequentially measured respectively, the numerical values of the lower direction of the second dial indicator 10 are slightly equal to the sum of the numerical readings in the left direction, the error is within 0.03mm, otherwise the measuring result is inaccurate, need find out the reason after the remeasurement, when obtaining the measuring result that meets the requirements, according to the measuring result, adjust the thickness of bearing axle bush bottom and both sides gasket, realize the purpose of alignment, whole device installation is simple, and is easy and simple to handle, and measurement accuracy is high, can accurately align, improves equipment moving security.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. The utility model provides a power plant steam turbine shafting is given a look for central device, sets up on the wheel, its characterized in that: the L-shaped bar fixing device comprises a first mounting frame and a second mounting frame, wherein the first mounting frame and the second mounting frame respectively comprise a connecting cylinder and an L-shaped bar, one end of the L-shaped bar is fixedly connected with the side surface of the connecting cylinder, the pair of wheels comprise a first fixed wheel and a second fixed wheel, mounting holes are respectively formed in two ends of the first fixed wheel and the second fixed wheel, the mounting holes in the first fixed wheel and the second fixed wheel respectively correspond to the mounting holes in the second fixed wheel, the two connecting cylinders are respectively arranged at two mounting holes of the first fixed wheel, bolts are arranged on the pair of wheels, tail ends of the bolts sequentially penetrate through the connecting cylinder and the mounting holes and are in threaded connection with nuts, one end, far away from the connecting cylinder, of the L-shaped bar faces the second fixed wheel, jacks and fastening screw holes are respectively formed in the horizontal end and the vertical end of the L-shaped bar, the fastening screw holes are perpendicular to the jacks and are communicated with the jacks, a first dial indicator and a second dial indicator are arranged on the first mounting frame, the measuring rods of the first dial indicator and the second dial indicator respectively penetrate through two insertion holes in the first mounting frame and respectively abut against the end face and the rim of the first fixed wheel, fastening screws are arranged in the fastening screw holes and used for fixing the dial indicator, a third dial indicator is arranged on the second mounting frame, the measuring rod of the third dial indicator penetrates through the insertion holes in the second mounting frame and abuts against the end face of the first fixed wheel, corresponding through pin holes are formed in the first fixed wheel and the second fixed wheel, and a pair wheel through pin is arranged in the through pin holes in a penetrating mode.
2. The power plant steam turbine shafting centering device of claim 1, wherein: the bolt sequentially penetrates through the connecting cylinder, the thickening pieces and the mounting holes, the thickness of each thickening piece is 10mm, and one or more thickening pieces are arranged.
3. The power plant steam turbine shafting centering device of claim 1, wherein: the precision of the first dial indicator, the precision of the second dial indicator and the precision of the third dial indicator are all 0.01mm, and the measuring range is all 2-3 mm.
4. The power plant steam turbine shafting centering device of claim 1, wherein: the first mounting frame and the second mounting frame are both square steel frames.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220637292.XU CN216977765U (en) | 2022-03-23 | 2022-03-23 | Power plant steam turbine shafting centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220637292.XU CN216977765U (en) | 2022-03-23 | 2022-03-23 | Power plant steam turbine shafting centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216977765U true CN216977765U (en) | 2022-07-15 |
Family
ID=82340004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220637292.XU Expired - Fee Related CN216977765U (en) | 2022-03-23 | 2022-03-23 | Power plant steam turbine shafting centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216977765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024078322A1 (en) * | 2022-10-12 | 2024-04-18 | 呼伦贝尔安泰热电有限责任公司扎兰屯热电厂 | Special device for measuring center of connecting shaft of steam turbine |
-
2022
- 2022-03-23 CN CN202220637292.XU patent/CN216977765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024078322A1 (en) * | 2022-10-12 | 2024-04-18 | 呼伦贝尔安泰热电有限责任公司扎兰屯热电厂 | Special device for measuring center of connecting shaft of steam turbine |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220715 |
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| CF01 | Termination of patent right due to non-payment of annual fee |