CN204271789U - A kind of steam turbine generator stand - Google Patents
A kind of steam turbine generator stand Download PDFInfo
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- CN204271789U CN204271789U CN201420755774.0U CN201420755774U CN204271789U CN 204271789 U CN204271789 U CN 204271789U CN 201420755774 U CN201420755774 U CN 201420755774U CN 204271789 U CN204271789 U CN 204271789U
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Abstract
The utility model discloses a kind of steam turbine generator stand, comprise machine base outer shell, positioning bar, be fixed on the first end ring flat-plate of machine base outer shell one end, the the second end ring plate being fixed on the machine base outer shell other end and the multiple ring flat-plates be fixed on machine base outer shell inwall, positioning bar is connected with ring flat-plate, described first end ring flat-plate and the second end ring plate all have the breach for reducing end ring panel stiffness, the support portion being used for supporting and location muscle is formed between any two breach, described positioning bar one end is connected with the support portion on first end ring flat-plate, the other end is connected with the support portion on the second end ring plate.The utility model by offering breach on first end ring flat-plate and the second end ring plate, reduce the rigidity of end ring plate, when compressing stator core, stretching to positioning bar, positioning bar is connected the stress that place produces and will be disperseed by breach with the support portion of end ring plate, reduce the distortion of end ring plate, ensure the operation of Generator group leader phase normal table.
Description
Technical field
The utility model relates to technical field of generators, particularly relates to a kind of steam turbine generator stand.
Background technology
Turbo generator is the generator supporting with steam turbine, and turbo generator is by Steam Turbine Driven generating.The superheated steam produced by boiler enters expansion work in steam turbine, makes blade rotation and drive electrical generators generating, the waste vapour after acting through condenser, circulating water pump, condensate pump, send boiler back to hot-water heating system etc. and recycle.High speed turbine generator is in order to reduce the mechanical stress and reduction windmill consumption that produce because of centrifugal force, and root diameter is generally less, and length is comparatively large, i.e. elongate rotor.This elongate rotor makes the rotor size of large high-speed turbo generator be subject to a definite limitation.
The stator structure of turbo generator is made up of parts such as iron core, support, coils.Stator core is the Primary magnetic circuit of stator, is also installation and the fixed part of stator winding.Stator core is made up of parts such as segmental punching, vent segment, tooth support, tightening bolt, tray, positioning bars usually.Support is used to secured core, and for suspended type generator, support is used for bearing the total weight of rotating part; Iron core is a part for generator magnetic circuit; Coil then forms the circuit of generator.The support of generator is also the parts of a generator outbalance, and the main role of support of generator is: as the supporting construction of stator core lamination; Bear the moment of torsion of stator, and reached footing; Form the passage of refrigerating gas; Form bearing, the supporting construction of frame and cooler.
Domestic existing four pole syllogic turbo generators, for avoiding the weld stress of positioning bar excessive, end ring plate on support does not all directly weld with positioning bar, only weld with positioning bar by the multiple ring flat-plates in support, the iron core hung on positioning bar relies on multiple ring flat-plate and machine base outer shell common support, ring flat-plate quantity is more, and production cost is larger.If be directly welded on by positioning bar on the end ring plate of support, although end ring plate can provide support for iron core, to reduce the ring flat-plate quantity that support enclosure uses, thus reduce production cost; But, when compressing stator core, positioning bar stretching, because the positioning bar length outside machine base outer shell is shorter, it is outside that positioning bar elongation just concentrates on end ring plate, end ring plate and positioning bar commissure stress will be caused to concentrate, and end ring plate deflection is large, and the time has been grown and can endanger generator unit.
Publication number is CN 201365177, publication date is the exterior laminated structure that the Chinese patent literature on December 16th, 2009 discloses a kind of Small Turbine stator core, comprise laminated core, it is characterized in that: described laminated core press-fits in inner cage, described inner cage is made up of end ring flat-plate, middle part ring flat-plate and support bar, and end ring flat-plate and middle part ring flat-plate connect in aggregates by support bar.
The exterior laminated structure of Small Turbine stator core disclosed in this patent documentation, the stator punching at its laminated core two ends forms notch cuttype, elongate leakage flux magnetic circuit, thus it is logical to decrease brow leakage, avoid supplementary load loss excessive overheated with structural member, but because end ring flat-plate and middle part ring flat-plate connect in aggregates by support bar, when compressing laminated core, ring flat-plate place, end stress is concentrated, end ring flat-plate can bear larger stress, after Long-Time Service, end ring flat-plate is yielding, has a strong impact on the operation of generator unit normal table.
Utility model content
The utility model is in order to overcome the defect of above-mentioned prior art, a kind of steam turbine generator stand is provided, the utility model by offering breach on first end ring flat-plate and the second end ring plate, reduce the rigidity of end ring plate, at compression stator core, when positioning bar is stretched, positioning bar is connected the stress that place produces and will be disperseed by breach with the support portion of end ring plate, reduce the distortion of end ring plate, can in reduction ring flat-plate quantity situation, rely on end ring plate and machine base outer shell that iron core just can be made to obtain good support, ensure the operation of Generator group leader phase normal table.
The utility model is achieved through the following technical solutions:
A kind of steam turbine generator stand, comprise machine base outer shell, positioning bar, be fixed on the first end ring flat-plate of machine base outer shell one end, the the second end ring plate being fixed on the machine base outer shell other end and the multiple ring flat-plates be fixed on machine base outer shell inwall, positioning bar is connected with ring flat-plate, it is characterized in that: described first end ring flat-plate and the second end ring plate all have the breach for reducing end ring panel stiffness, the support portion being used for supporting and location muscle is formed between any two breach, described positioning bar one end is connected with the support portion on first end ring flat-plate, the other end is connected with the support portion on the second end ring plate.
Also comprise the first tray and the second tray, one end of described positioning bar is welded with the support portion on first end ring flat-plate by the first tray, and the other end is welded with the support portion on the second end ring plate by the second tray.
The support portion of described first end ring flat-plate and the second end ring plate all has the groove for placement positioning muscle end.
Described breach is multiple, and multiple breach is evenly distributed on first end ring flat-plate and the second end ring plate circumferentially.
Spacing between described any two breach is 200-300 millimeter.
The cross section of described breach is U-shaped.
The width of described breach is 200-250 millimeter, and the degree of depth is 150-200 millimeter.
The radial thickness of the support portion on described first end ring flat-plate and the second end ring plate is all less than the radial thickness of first end ring flat-plate and the second end ring plate.
The beneficial effects of the utility model are mainly manifested in the following aspects:
One, the utility model, first end ring flat-plate and the second end ring plate all have the breach for reducing end ring panel stiffness, the support portion being used for supporting and location muscle is formed between any two breach, positioning bar one end is connected with the support portion on first end ring flat-plate, the other end is connected with the support portion on the second end ring plate, owing to all having breach on first end ring flat-plate and the second end ring plate, reduce the rigidity of end ring plate, at compression stator core, when positioning bar is stretched, positioning bar is connected the stress that place produces and will be disperseed by breach with the support portion of end ring plate, reduce the distortion of end ring plate, can in reduction ring flat-plate quantity situation, rely on end ring plate and machine base outer shell that iron core just can be made to obtain good support, ensure the operation of Generator group leader phase normal table, in turn simplify the overall structure of support, reduce production cost.
Two, the utility model, also comprise the first tray and the second tray, one end of positioning bar is welded with the support portion on first end ring flat-plate by the first tray, the other end is welded with the support portion on the second end ring plate by the second tray, by the setting of tray, make positioning bar and end ring plate weld on the one hand more firm, tray has certain cushioning effect on the other hand, stress suffered by end ring plate can be reduced further, make generator unit operation more stable.
Three, the utility model, the support portion of first end ring flat-plate and the second end ring plate all has the groove for placement positioning muscle end, groove has position-limiting action to positioning bar end, when preventing generator unit from using, positioning bar produces slight displacement, affect the tightness of whole iron core, thus provide further guarantee for generator unit normal table runs.
Four, the utility model, breach is multiple, multiple breach is evenly distributed on first end ring flat-plate and the second end ring plate circumferentially, it is circumferentially whole that positioning bar can be made to be connected with the support portion of end ring plate stress equilibrium that place produces is dispersed in end ring plate, maximized reduction end ring plate stress is concentrated, thus provides firm support for iron core.
Five, the utility model, the spacing between any two breach is 200-300 millimeter, the stress of end ring plate can be made to be in more rational level, can ensure again the intensity of end ring plate, thus provides good support for iron core.
Six, the utility model, the cross section of breach is U-shaped, and the closing end due to U-shaped breach is fillet, can strengthen the ductility of end ring plate, avoids end ring plate stress to concentrate, and makes the dispersion as far as possible of stress suffered by end ring plate, thus effectively reduces the distortion of end ring plate.
Seven, the utility model, the width of breach is 200-250 millimeter, and the degree of depth is 150-200 millimeter, adopts the breach of this specific dimensions, and breach size is coordinated, and the stress ratio of indentation, there is comparatively reasonable, ensures that end ring plate provides good support force for iron core further.
Eight, the utility model, the radial thickness of the support portion on first end ring flat-plate and the second end ring plate is all less than the radial thickness of first end ring flat-plate and the second end ring plate, and the rigidity of support portion is lower, and ductility is better, thus reduce stress suffered by whole end ring plate, reduce the distortion of end ring plate further.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail, wherein:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that A of the present utility model is to structural representation;
Fig. 3 is the structural representation of the utility model embodiment 2;
Fig. 4 is the structural representation of first end ring flat-plate in the utility model embodiment 3;
Fig. 5 is the B-B view of Fig. 4;
Mark in figure: 1, machine base outer shell, 2, positioning bar, 3, first end ring flat-plate, the 4, second end ring plate, 5, ring flat-plate, 6, breach, 7, support portion, the 8, first tray, the 9, second tray, 10, groove.
Embodiment
Embodiment 1
See Fig. 1 and Fig. 2, a kind of steam turbine generator stand, comprise machine base outer shell 1, positioning bar 2, be fixed on the first end ring flat-plate 3 of machine base outer shell 1 one end, the the second end ring plate 4 being fixed on machine base outer shell 1 other end and the multiple ring flat-plates 5 be fixed on machine base outer shell 1 inwall, positioning bar 2 is connected with ring flat-plate 5, described first end ring flat-plate 3 and the second end ring plate 4 all have breach 6, the support portion 7 being used for supporting and location muscle 2 is formed between any two breach 6, described positioning bar 2 one end is connected with the support portion 7 on first end ring flat-plate 3, the other end is connected with the support portion 7 on the second end ring plate 4.
The present embodiment is the most basic execution mode, structure is simple, adopt such structure, owing to all having breach 6 on first end ring flat-plate 3 and the second end ring plate 4, reduce the rigidity of end ring plate, at compression stator core, when positioning bar 2 is stretched, positioning bar 2 is connected the stress that place produces and will be disperseed by breach 6 with the support portion 7 of end ring plate, reduce the distortion of end ring plate, can in reduction ring flat-plate 5 quantity situation, rely on end ring plate and machine base outer shell 1 that iron core just can be made to obtain good support, ensure the operation of Generator group leader phase normal table, in turn simplify the overall structure of support, reduce production cost.
Embodiment 2
See Fig. 2 and Fig. 3, a kind of steam turbine generator stand, comprise machine base outer shell 1, positioning bar 2, be fixed on the first end ring flat-plate 3 of machine base outer shell 1 one end, the the second end ring plate 4 being fixed on machine base outer shell 1 other end and the multiple ring flat-plates 5 be fixed on machine base outer shell 1 inwall, positioning bar 2 is connected with ring flat-plate 5, described first end ring flat-plate 3 and the second end ring plate 4 all have breach 6, the support portion 7 being used for supporting and location muscle 2 is formed between any two breach 6, described positioning bar 2 one end is connected with the support portion 7 on first end ring flat-plate 3, the other end is connected with the support portion 7 on the second end ring plate 4.
Also comprise the first tray 8 and the second tray 9, one end of described positioning bar 2 is welded with the support portion 7 on first end ring flat-plate 3 by the first tray 8, and the other end is welded with the support portion 7 on the second end ring plate 4 by the second tray 9.
The present embodiment is a better embodiment, and by the setting of tray, make positioning bar 2 and end ring plate weld on the one hand more firm, tray has certain cushioning effect on the other hand, can reduce stress suffered by end ring plate further, make generator unit operation more stable.
Embodiment 3
See Fig. 2-Fig. 4, a kind of steam turbine generator stand, comprise machine base outer shell 1, positioning bar 2, be fixed on the first end ring flat-plate 3 of machine base outer shell 1 one end, the the second end ring plate 4 being fixed on machine base outer shell 1 other end and the multiple ring flat-plates 5 be fixed on machine base outer shell 1 inwall, positioning bar 2 is connected with ring flat-plate 5, described first end ring flat-plate 3 and the second end ring plate 4 all have breach 6, the support portion 7 being used for supporting and location muscle 2 is formed between any two breach 6, described positioning bar 2 one end is connected with the support portion 7 on first end ring flat-plate 3, the other end is connected with the support portion 7 on the second end ring plate 4.
Also comprise the first tray 8 and the second tray 9, one end of described positioning bar 2 is welded with the support portion 7 on first end ring flat-plate 3 by the first tray 8, and the other end is welded with the support portion 7 on the second end ring plate 4 by the second tray 9.
The support portion 7 of described first end ring flat-plate 3 and the second end ring plate 4 all has the groove 10 for the end of placement positioning muscle 2.
The present embodiment is a better embodiment, the end of groove 10 pairs of positioning bars 2 has position-limiting action, when preventing generator unit from using, positioning bar 2 produces slight displacement, affects the tightness of whole iron core, thus provides further guarantee for generator unit normal table runs.
Embodiment 4
See Fig. 2-Fig. 5, a kind of steam turbine generator stand, comprise machine base outer shell 1, positioning bar 2, be fixed on the first end ring flat-plate 3 of machine base outer shell 1 one end, the the second end ring plate 4 being fixed on machine base outer shell 1 other end and the multiple ring flat-plates 5 be fixed on machine base outer shell 1 inwall, positioning bar 2 is connected with ring flat-plate 5, described first end ring flat-plate 3 and the second end ring plate 4 all have breach 6, the support portion 7 being used for supporting and location muscle 2 is formed between any two breach 6, described positioning bar 2 one end is connected with the support portion 7 on first end ring flat-plate 3, the other end is connected with the support portion 7 on the second end ring plate 4.
Also comprise the first tray 8 and the second tray 9, one end of described positioning bar 2 is welded with the support portion 7 on first end ring flat-plate 3 by the first tray 8, and the other end is welded with the support portion 7 on the second end ring plate 4 by the second tray 9.
The support portion 7 of described first end ring flat-plate 3 and the second end ring plate 4 all has the groove 10 for placement positioning muscle 2.
Described breach 6 is multiple, and multiple breach 6 is evenly distributed on first end ring flat-plate 3 and the second end ring plate 4 circumferentially.Spacing between described any two breach 6 is 200-300 millimeter.
The cross section of described breach 6 is U-shaped.
The width of described breach 6 is 200-250 millimeter, and the degree of depth is 150-200 millimeter.
The radial thickness of the support portion 7 on described first end ring flat-plate 3 and the second end ring plate 4 is all less than the radial thickness of first end ring flat-plate 3 and the second end ring plate 4.
The present embodiment is preferred forms, breach 6 is multiple, multiple breach 6 is evenly distributed on first end ring flat-plate 3 and the second end ring plate 4 circumferentially, it is circumferentially whole that positioning bar 2 can be made to be connected with the support portion 7 of end ring plate stress equilibrium that place produces is dispersed in end ring plate, maximized reduction end ring plate stress is concentrated, thus provides firm support for iron core; Spacing between any two breach 6 is 200-300 millimeter, the stress of end ring plate can be made to be in more rational level, can ensure again the intensity of end ring plate, thus provides good support for iron core.The cross section of breach 6 is U-shaped, and the closing end due to U-shaped breach 6 is fillet, can strengthen the ductility of end ring plate, avoids end ring plate stress to concentrate, and makes the dispersion as far as possible of stress suffered by end ring plate, thus effectively reduces the distortion of end ring plate; The width of breach 6 is 200-250 millimeter, and the degree of depth is 150-200 millimeter, adopts the breach of this specific dimensions, and breach size is coordinated, and the stress ratio of indentation, there is comparatively reasonable, ensures that end ring plate provides good support force for iron core further.The radial thickness of the support portion 7 on first end ring flat-plate 3 and the second end ring plate 4 is all less than the radial thickness of first end ring flat-plate 3 and the second end ring plate 4, the rigidity of support portion 7 is lower, ductility is better, thus reduces stress suffered by whole end ring plate, reduces the distortion of end ring plate further.
The utility model is not limited to above-described embodiment, and according to the description of above-described embodiment, those of ordinary skill in the art also can make some apparent changes to the utility model, but these changes all should fall within the protection range of the utility model claim.
Claims (8)
1. a steam turbine generator stand, comprise machine base outer shell (1), positioning bar (2), be fixed on the first end ring flat-plate (3) of machine base outer shell (1) one end, the the second end ring plate (4) being fixed on machine base outer shell (1) other end and the multiple ring flat-plates (5) be fixed on machine base outer shell (1) inwall, positioning bar (2) is connected with ring flat-plate (5), it is characterized in that: described first end ring flat-plate (3) and the second end ring plate (4) all have breach (6), the support portion (7) being used for supporting and location muscle (2) is formed between any two breach (6), described positioning bar (2) one end is connected with the support portion (7) on first end ring flat-plate (3), the other end is connected with the support portion (7) on the second end ring plate (4).
2. a kind of steam turbine generator stand according to claim 1, it is characterized in that: also comprise the first tray (8) and the second tray (9), one end of described positioning bar (2) is welded with the support portion (7) on first end ring flat-plate (3) by the first tray (8), and the other end is welded with the support portion (7) on the second end ring plate (4) by the second tray (9).
3. a kind of steam turbine generator stand according to claim 1 and 2, is characterized in that: the support portion (7) of described first end ring flat-plate (3) and the second end ring plate (4) all has the groove (10) for the end of placement positioning muscle (2).
4. a kind of steam turbine generator stand according to claim 3, is characterized in that: described breach (6) is for multiple, and multiple breach (6) is evenly distributed on first end ring flat-plate (3) and the second end ring plate (4) circumferentially.
5. a kind of steam turbine generator stand according to claim 4, is characterized in that: the spacing between described any two breach (6) is 200-300 millimeter.
6. a kind of steam turbine generator stand according to claim 1, is characterized in that: the cross section of described breach (6) is U-shaped.
7. a kind of steam turbine generator stand according to claim 1, is characterized in that: the width of described breach (6) is 200-250 millimeter, and the degree of depth is 150-200 millimeter.
8. a kind of steam turbine generator stand according to claim 5, is characterized in that: the radial thickness of the support portion (7) on described first end ring flat-plate (3) and the second end ring plate (4) is all less than the radial thickness of first end ring flat-plate (3) and the second end ring plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755774.0U CN204271789U (en) | 2014-12-05 | 2014-12-05 | A kind of steam turbine generator stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755774.0U CN204271789U (en) | 2014-12-05 | 2014-12-05 | A kind of steam turbine generator stand |
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| Publication Number | Publication Date |
|---|---|
| CN204271789U true CN204271789U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420755774.0U Active CN204271789U (en) | 2014-12-05 | 2014-12-05 | A kind of steam turbine generator stand |
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| CN (1) | CN204271789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003305A (en) * | 2015-06-02 | 2015-10-28 | 苏州巨能发电配套设备有限公司 | Overall steam turbine generator base and assembling technology thereof |
| CN108054843A (en) * | 2017-12-29 | 2018-05-18 | 东方电气集团东方电机有限公司 | A kind of bulb through-flow electricity generator stator stand structure |
-
2014
- 2014-12-05 CN CN201420755774.0U patent/CN204271789U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003305A (en) * | 2015-06-02 | 2015-10-28 | 苏州巨能发电配套设备有限公司 | Overall steam turbine generator base and assembling technology thereof |
| CN108054843A (en) * | 2017-12-29 | 2018-05-18 | 东方电气集团东方电机有限公司 | A kind of bulb through-flow electricity generator stator stand structure |
| CN108054843B (en) * | 2017-12-29 | 2018-12-07 | 东方电气集团东方电机有限公司 | A kind of bulb through-flow electricity generator stator stand structure |
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