CN110159367B - Maintenance jigger for steam turbine generator unit - Google Patents
Maintenance jigger for steam turbine generator unit Download PDFInfo
- Publication number
- CN110159367B CN110159367B CN201910442761.5A CN201910442761A CN110159367B CN 110159367 B CN110159367 B CN 110159367B CN 201910442761 A CN201910442761 A CN 201910442761A CN 110159367 B CN110159367 B CN 110159367B
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- Prior art keywords
- transition
- bolt
- gear
- speed reducer
- cycloidal pin
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- 241001584775 Tunga penetrans Species 0.000 title claims abstract description 26
- 238000012423 maintenance Methods 0.000 title claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 51
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 32
- 238000009434 installation Methods 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000227287 Elliottia pyroliflora Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/34—Turning or inching gear
- F01D25/36—Turning or inching gear using electric motors
Abstract
The invention discloses a turbine generator set maintenance jigger which comprises a left bracket, a right bracket, a cross beam, a cycloidal pin gear speed reducer and a storage bracket, wherein fastening bolts are arranged at the tops of the left bracket and the right bracket through mounting holes, the tops of the fastening bolts penetrate through the bottom of the mounting cross beam, the cycloidal pin gear speed reducer is arranged at the top of one side of the cross beam through a first bolt, a direct connection motor is arranged at one end of the cycloidal pin gear speed reducer, a driving gear is clamped at the periphery of a rotating shaft at the other end of the cycloidal pin gear speed reducer, a shaft end retainer ring is arranged at one end of the rotating shaft through a second bolt, a transition shaft is welded at the bottom of the driving gear, a transition gear is sleeved at the periphery of the transition shaft and is in meshed connection with the driving gear, a bushing is sleeved between the transition gear and the transition shaft, and a limiting ring is sleeved at one side of the bushing. The maintenance jigger of the steam turbine generator unit adopts a bridge type structure, thereby properly solving the problems of inconvenient installation, box base installation, assembly and disassembly and the like and simultaneously ensuring the safety of the box.
Description
Technical Field
The invention belongs to the technical field of maintenance machinery of a steam turbine generator unit, and particularly relates to a maintenance jigger of the steam turbine generator unit.
Background
When the general type maintenance jigger is used, the problems that the installation and the box base are high in installation strength, inconvenient to assemble and disassemble and the large shaft alignment are completely dependent on driving are solved, the safety is poor, the operation is excessively dependent on external auxiliary equipment, and the steam turbine generator unit cannot be driven to continuously rotate in a inching mode and forward and reverse in a coiling mode according to maintenance requirements, so that the maintenance efficiency of the steam turbine generator unit is low, and the problem is to be solved urgently.
Disclosure of Invention
The invention aims to provide a maintenance jigger for a steam turbine generator unit, which solves the problems of inconvenient installation and assembly and disassembly and the like, and ensures the safety of a box body, thereby being more suitable for the main shaft jigger of the steam turbine generator unit than other jiggers. The jigger is mainly suitable for large shaft rotation during overhauling of 50-600MW steam turbine generator units. The problem in the background technology can be solved by changing the backward condition of the previous large-shaft alignment completely depending on the driving.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a turbo generator set overhauls jigger, includes left socle, right branch frame, crossbeam, cycloidal pin gear speed reducer and storage support, left socle and right branch frame top are all through mounting hole installation fastening bolt, and the fastening bolt top runs through the installation crossbeam bottom, crossbeam one side top is through a number bolt installation cycloidal pin gear speed reducer, cycloidal pin gear speed reducer one end has the direct connection motor, and cycloidal pin gear speed reducer other end axis of rotation peripheral joint driving gear, and axis of rotation one end passes through two number bolt installation axle end retaining rings, driving gear bottom welding transition shaft, transition shaft peripheral cover is equipped with transition gear, and transition gear and driving gear meshing are connected, the cover is equipped with the bush between transition gear and the transition shaft, bush one side suit spacing ring, transition shaft one end periphery is through two number screw installation mounts, and transition shaft one end passes through screw installation spiral cover formula oil cup, crossbeam bottom one side welding storage support, and crossbeam top one side welding electric cabinet, cycloidal pin gear speed reducer and electric cabinet are electrically connected.
Further, a washer I is arranged at the joint of the bolt I and the cycloidal pin gear speed reducer, a washer II is arranged at the joint of the bolt II and the shaft end check ring, and a gear fixing bolt is installed at the joint of one end of the bottom of the bushing and the transition gear through a slot. The washer I can improve the fastening force of the bolt I on the cycloidal pin gear speed reducer fixed on one side of the cross beam; the gear fixing bolt can fix the transition gear at the periphery of the bushing.
Further, a first screw is arranged at one end of the top of the transition shaft through threads, and a set screw is arranged between the limiting ring and the first screw through a thread sleeve. The limiting ring can be fixed at the peripheral position of the transition shaft by the set screw.
Further, the fastening bolt top passes through threaded connection fixation nut, the fixation nut bottom is provided with fluting awl end holding screw, and the third packing ring of suit between fluting awl end holding screw and the fixation nut, the peripheral suit copper sheathing of fastening bolt, and the copper sheathing is located between fastening bolt and the crossbeam, left socle and fastening bolt and right branch frame and fastening bolt junction all pass through slot mounting bolt fixed bolt. The copper bush can improve the strength of the fastening bolt for fixing the top of the left bracket and the right bracket of the cross beam.
Further, the two ends of the left bracket and the right bracket are respectively provided with a bracket fixing bolt through a mounting groove, and a fourth gasket is sleeved on the periphery of the top of the bracket fixing bolt. The fourth gasket can improve the fixing strength of the left bracket and the right bracket at the top of the steam turbine generator.
Compared with the prior art, the invention has the beneficial effects that:
the jigger mainly comprises parts such as a cross beam, a speed reducer, a transmission gear, left and right supporting legs, a fixing bolt, an adjusting screw and the like. The left and right support legs of the cross beam are formed by welding steel plates, so that the cross beam is good in rigidity and light in weight. The cross beam is connected with the left and right supporting legs through fixing bolts, and the height can be adjusted by using adjusting screws. The machine has the characteristics of light weight, good strength, convenient adjustment, simple assembly and disassembly and the like. The machine is in a bridge type structure, is meshed with the top of the large-shaft disc rotating gear, is operated by an electric control cabinet, and can realize continuous, inching, forward and reverse disc rotation of the steam turbine generator.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a maintenance jigger for a steam turbine generator unit.
Fig. 2 is a schematic diagram of a cross beam structure of a maintenance jigger for a steam turbine generator unit.
In the figure: 1. a fourth gasket; 2. bolt fixing bolt; 3. a copper sleeve; 4. a grooving cone end set screw; 5. a third gasket; 6. a fixing nut; 7. a fastening bolt; 8. a transition gear; 9. a gear fixing bolt; 10. a limiting ring; 11. a transition shaft; 12. a screw cap type oil cup; 13. a bushing; 14. a fixing frame; 15. a set screw; 16. a first screw; 17. a second bolt; 18. a second gasket; 19. a shaft end retainer ring; 20. a drive gear; 21. a washer I; 22. a first bolt; 23. cycloidal pin gear speed reducer; 24. storing the bracket; 25. a left bracket; 26. an electric control cabinet; 27. a second screw; 28. a cross beam; 29. a bracket fixing bolt; 30. and a right bracket.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1-2, a steam turbine generator unit maintenance jigger comprises a left bracket 25, a right bracket 30, a cross beam 28, a cycloidal pin gear speed reducer 23 and a storage bracket 24, wherein the tops of the left bracket 25 and the right bracket 30 are respectively provided with a fastening bolt 7 through a mounting hole, the tops of the fastening bolts 7 penetrate through the bottom of the mounting cross beam 28, one side top of the cross beam 28 is provided with the cycloidal pin gear speed reducer 23 through a first bolt 22, one end of the cycloidal pin gear speed reducer 23 is provided with a direct-connection motor, the periphery of the other end of the cycloidal pin gear speed reducer 23 is clamped with a driving gear 20, one end of the rotating shaft is provided with a shaft end retainer 19 through a second bolt 17, the bottom of the driving gear 20 is welded with a transition shaft 11, the transition gear 8 is sleeved on the periphery of the transition shaft 11, one side of the transition gear 8 is meshed with the transition shaft 11, one side of the liner 13 is sleeved with a limiting ring 10, one side of the transition shaft 11 is provided with a second bolt 27 to be provided with a mounting bracket 14, one end of the transition shaft 11 is provided with a screw cap type oil cup 12 through threads, one side of the cross beam 28 is provided with a second bolt 17, one side of the bottom of the cycloidal pin gear speed reducer 24 is welded with the electric control 26, and one side of the electric control cabinet 26 is welded with the electric control gear 23.
The connecting part of the first bolt 22 and the cycloidal pin gear speed reducer 23 is provided with a first washer 21, the connecting part of the second bolt 17 and the shaft end check ring 19 is provided with a second washer 18, and the connecting part of one end of the bottom of the bushing 13 and the transition gear 8 is provided with a gear fixing bolt 9 through a slot.
One end of the top of the transition shaft 11 is provided with a first screw 16 through threads, and a set screw 15 is arranged between the limiting ring 10 and the first screw 16 through a thread sleeve.
The top of the fastening bolt 7 is connected with the fixing nut 6 through threads, a slotted cone end set screw 4 is arranged at the bottom of the fixing nut 6, a washer No. three 5 is sleeved between the slotted cone end set screw 4 and the fixing nut 6, a copper sleeve 3 is sleeved on the periphery of the fastening bolt 7, the copper sleeve 3 is positioned between the fastening bolt 7 and the cross beam 28, and the joints of the left bracket 25, the fastening bolt 7, the right bracket 30 and the fastening bolt 7 are all fixed with the bolt 2 through slot mounting bolts.
The two ends of the left bracket 25 and the right bracket 30 are respectively provided with a bracket fixing bolt 29 through a mounting groove, and a fourth gasket 1 is sleeved on the periphery of the top of the bracket fixing bolt 29.
Example 2
As shown in fig. 1-2, a steam turbine generator unit maintenance jigger comprises a left bracket 25, a right bracket 30, a cross beam 28, a cycloidal pin gear speed reducer 23 and a storage bracket 24, wherein the tops of the left bracket 25 and the right bracket 30 are respectively provided with a fastening bolt 7 through a mounting hole, the tops of the fastening bolts 7 penetrate through the bottom of the mounting cross beam 28, one side top of the cross beam 28 is provided with the cycloidal pin gear speed reducer 23 through a first bolt 22, one end of the cycloidal pin gear speed reducer 23 is provided with a direct-connection motor, the periphery of the other end of the cycloidal pin gear speed reducer 23 is clamped with a driving gear 20, one end of the rotating shaft is provided with a shaft end retainer 19 through a second bolt 17, the bottom of the driving gear 20 is welded with a transition shaft 11, the transition gear 8 is sleeved on the periphery of the transition shaft 11, one side of the transition gear 8 is meshed with the transition shaft 11, one side of the liner 13 is sleeved with a limiting ring 10, one side of the transition shaft 11 is provided with a second bolt 27 to be provided with a mounting bracket 14, one end of the transition shaft 11 is provided with a screw cap type oil cup 12 through threads, one side of the cross beam 28 is provided with a second bolt 17, one side of the bottom of the cycloidal pin gear speed reducer 24 is welded with the electric control 26, and one side of the electric control cabinet 26 is welded with the electric control gear 23.
The connecting part of the first bolt 22 and the cycloidal pin gear speed reducer 23 is provided with a first washer 21, the connecting part of the second bolt 17 and the shaft end check ring 19 is provided with a second washer 18, and the connecting part of one end of the bottom of the bushing 13 and the transition gear 8 is provided with a gear fixing bolt 9 through a slot.
The first screw 16 is installed at one end of the top of the transition shaft 11 through threads, and the clamping hoop is installed between the limiting ring 10 and the first screw 16 through an installation groove. The tight clamp is better for the tight effect of holding down the spacing ring 10 of holding down screw 15, and dismouting is more convenient and fast.
The top of the fastening bolt 7 is connected with the fixing nut 6 through threads, a slotted cone end set screw 4 is arranged at the bottom of the fixing nut 6, a washer No. three 5 is sleeved between the slotted cone end set screw 4 and the fixing nut 6, a copper sleeve 3 is sleeved on the periphery of the fastening bolt 7, the copper sleeve 3 is positioned between the fastening bolt 7 and the cross beam 28, and the joints of the left bracket 25, the fastening bolt 7, the right bracket 30 and the fastening bolt 7 are all fixed with the bolt 2 through slot mounting bolts.
The two ends of the left bracket 25 and the right bracket 30 are respectively provided with a bracket fixing bolt 29 through a mounting groove, and a fourth gasket 1 is sleeved on the periphery of the top of the bracket fixing bolt 29.
The working principle and the using flow of the invention are as follows: the jigger is hung to the mounting position, so that the transition gear 8 is approximately meshed with the turbine generator gear, and bolt holes of the left bracket 25 and the right bracket 30 are basically aligned with the turbine mounting bolts (the rear shaft end of the motor can be manually jigged when the meshing is difficult). The machine is of a bridge type structure and is meshed with the top of a large shaft disc rotating gear, personnel are connected with an electric control cabinet 26 and an external power supply mechanism, so that the personnel can use the electric control cabinet 26 to operate, continuous, inching and forward and reverse disc rotation of the steam turbine generator can be realized, the base is only required to be installed once in the overhaul process, the base is not moved when the large shaft is assembled and disassembled, and the large shaft can be hoisted only by disassembling two fastening bolts to remove the disc car beam 28. When the large shaft of the steam turbine needs to be reeled, the crossbeam 28 of the reel is put to the original position to lock the bolt, and the reel can be reeled without alignment. The gap between the tooth tops of the transition gear 8 and the turbine gear can be adjusted by using the adjusting screw, and all bolts are fastened when the gap between the tooth tops is adjusted to be 1.5-1.8 mm. The cycloidal pin gear speed reducer 23 is BLY-2215-3922, the motor speed is 1450rpm, and the power is as follows: 1.1-7.5KW (optional according to the turbine). The output rotating speed of the jigger is 7.75rpm, and the jigger is meshed and transmitted by a turbine big gear, and finally the jigger rotating speed of the turbine main shaft is about 1rpm, so that the jigger rotating speed of maintaining the jigger main shaft jigger rotating is met.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a turbo generator set overhauls jigger, includes left socle (25), right branch frame (30), crossbeam (28), cycloid pin gear speed reducer (23) and deposits support (24), its characterized in that:
the utility model discloses a cycloidal pin gear speed reducer (23) is installed at left socle (25) and right branch frame (30) top all through mounting hole installation fastening bolt (7), and fastening bolt (7) top run through installation crossbeam (28) bottom, crossbeam (28) one side top is through a number bolt (22) installation cycloidal pin gear speed reducer (23), cycloidal pin gear speed reducer (23) one end has direct-connected motor, and cycloidal pin gear speed reducer (23) other end axis of rotation peripheral joint driving gear (20), and axis of rotation one end passes through second number bolt (17) installation axle end retaining ring (19), transition axle (11) are welded to driving gear (20) bottom, transition axle (11) peripheral cover is equipped with transition gear (8), and transition gear (8) are connected with driving gear (20) meshing, the cover is equipped with bush (13) between transition gear (8) and transition axle (11), bush (13) one side cover spacing ring (10), transition axle (11) one end periphery is through second number screw (27) installation mount (14), and transition axle (11) one end is through screw thread installation spiral cover type oil cup (12), transition gear (8) peripheral cover is equipped with transition gear (8) and electric control cabinet (26) one side of being welded to one side of the electric control cabinet (26) and electric control cabinet (26) top one side of being welded to one side of the electric cabinet (26), the novel cycloidal pin gear is characterized in that a washer (21) is arranged at the joint of the first bolt (22) and the cycloidal pin gear speed reducer (23), a washer (18) is arranged at the joint of the second bolt (17) and the shaft end check ring (19), a gear fixing bolt (9) is installed at the joint of one end of the bottom of the bushing (13) and the transition gear (8) through a slot, a screw (16) is installed at one end of the top of the transition shaft (11) through threads, and a set screw (15) is installed between the limiting ring (10) and the screw (16) through a thread bush.
2. The steam turbine generator unit maintenance jigger of claim 1, wherein: fastening bolt (7) top is through threaded connection fixation nut (6), fixation nut (6) bottom is provided with fluting awl end holding screw (4), and suit No. three packing rings (5) between fluting awl end holding screw (4) and fixation nut (6), peripheral suit copper sheathing (3) of fastening bolt (7), and copper sheathing (3) are located between fastening bolt (7) and crossbeam (28), left socle (25) all pass through slot mounting bolt fixed bolt (2) with fastening bolt (7) and right branch frame (30) junction.
3. The steam turbine generator unit maintenance jigger of claim 1, wherein: the left support (25) and the right support (30) are provided with support fixing bolts (29) through mounting grooves, and a fourth gasket (1) is sleeved on the periphery of the tops of the support fixing bolts (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910442761.5A CN110159367B (en) | 2019-05-25 | 2019-05-25 | Maintenance jigger for steam turbine generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910442761.5A CN110159367B (en) | 2019-05-25 | 2019-05-25 | Maintenance jigger for steam turbine generator unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110159367A CN110159367A (en) | 2019-08-23 |
| CN110159367B true CN110159367B (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910442761.5A Active CN110159367B (en) | 2019-05-25 | 2019-05-25 | Maintenance jigger for steam turbine generator unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159367B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190427970A (en) * | 1904-12-21 | 1905-11-09 | Thomas Greenwood | Improvements in Selfacting Sliding and Screw-cutting Lathes |
| CN201588661U (en) * | 2009-12-29 | 2010-09-22 | 上海电气电站设备有限公司 | Front mounted approach type variable frequency speed control high-speed turning gear for steam turbine |
| CN202194692U (en) * | 2011-07-13 | 2012-04-18 | 陕西理工学院 | Steam turbine maintenance barring device |
| KR20140144760A (en) * | 2013-06-11 | 2014-12-22 | 현대중공업 주식회사 | Bolt elastic coupling device for engine turning gear |
| KR20170130142A (en) * | 2016-05-18 | 2017-11-28 | 거명터빈주식회사 | Device turning for rotor |
| CN210033545U (en) * | 2019-05-25 | 2020-02-07 | 连云港透平能源设备有限公司 | Overhauling jigger of steam turbine generator unit |
-
2019
- 2019-05-25 CN CN201910442761.5A patent/CN110159367B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190427970A (en) * | 1904-12-21 | 1905-11-09 | Thomas Greenwood | Improvements in Selfacting Sliding and Screw-cutting Lathes |
| CN201588661U (en) * | 2009-12-29 | 2010-09-22 | 上海电气电站设备有限公司 | Front mounted approach type variable frequency speed control high-speed turning gear for steam turbine |
| CN202194692U (en) * | 2011-07-13 | 2012-04-18 | 陕西理工学院 | Steam turbine maintenance barring device |
| KR20140144760A (en) * | 2013-06-11 | 2014-12-22 | 현대중공업 주식회사 | Bolt elastic coupling device for engine turning gear |
| KR20170130142A (en) * | 2016-05-18 | 2017-11-28 | 거명터빈주식회사 | Device turning for rotor |
| CN210033545U (en) * | 2019-05-25 | 2020-02-07 | 连云港透平能源设备有限公司 | Overhauling jigger of steam turbine generator unit |
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| Publication number | Publication date |
|---|---|
| CN110159367A (en) | 2019-08-23 |
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