CN2888167Y - Semi-flexible coupling for steam turbine - Google Patents
Semi-flexible coupling for steam turbine Download PDFInfo
- Publication number
- CN2888167Y CN2888167Y CN 200620090439 CN200620090439U CN2888167Y CN 2888167 Y CN2888167 Y CN 2888167Y CN 200620090439 CN200620090439 CN 200620090439 CN 200620090439 U CN200620090439 U CN 200620090439U CN 2888167 Y CN2888167 Y CN 2888167Y
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- CN
- China
- Prior art keywords
- coupling
- steam turbine
- dish
- semiflexible
- utility
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a coupling and semiflexible coupling of steam turbine, the coupling discs of steam turbine coupling are inner and outer discs, the locating ring is arranged between them and fixed by bolts, the outer coupling disc has axle holes, the inner coupling disc has large diameter through hole and small diameter bolt holes, the semiflexible coupling is connected with the small diameter bolt hole and the other end is with coupling disc on side of gearbox, the coupling disc on side of gearbox is as same as structure of coupling disc on side of steam turbine. The utility model semiflexible coupling has regulating effect of buffer. When main oil pump, pulse oil pump or gear has malfunction to make gearbox shaft with severe overload, the semiflexible coupling will break as vulnerable part firstly to protect above important parts. The utility model has compact and rational structure, convenient disassembly and assembly, smooth operation, with safety and reliable long performance life, suitable for ENG type backpressure turbine.
Description
Technical field:
The utility model relates to mechanical coupling, particularly coupling.
Background technique:
Steam turbine flexible coupling device structure as shown in Figure 1 at present, steamer pusher side coupling dish is connected with turbine spindle by taper pin and screw, steamer pusher side coupling dish drives spring plate group through two active bolts, spring plate group drives the shroud of shaft coupling body through two driven bolts, after the shaft coupling body is accepted moment of torsion, again through the bolt identical with front structure, spring plate group, bolt, driven gear case side coupling dish, gear box side coupling dish and gearbox shaft taper pin, screw connects, like this, and through the flexible combination coupling of two groups of bolt-spring plate group-bolts, turbine spindle power is delivered on the gearbox shaft, drives main oil pump, the work of pulse oil pump.
Wherein spring sheet, bolt member because the restriction of aspects such as material and production and processing, heat treatment does not reach the process engineering standard of design, cause spring sheet, bolt to be in operation and frequently rupture.The supporting flexible coupling of former factory can use 2～3 years, after, the coupling as parts procurement arrives generally can only use 2～4 months, and 1～2 week of only moving that has has just ruptured.
Flexible coupling is in operation and frequently ruptures, and has been the ubiquitous common disease of steam turbine, frequently-occurring disease.Coupling ruptures suddenly, makes steam turbine be forced to accidental shutdown, directly influences power supply, steam supply, heating, causes serious economy loss and bad social influence for thermoelectricity plant and user.Even the factory that has is because coupling fracture, and on-the-spot operation error causes accident to enlarge, and the great serious accident that causes steam turbine, generator bearing shell to melt has caused heavy economic losses to enterprise.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned not enough problem, and a kind of steam turbine semi-flexible coupling is provided, and is simple and practical, satisfies the needs of steam turbine set safety, economy, reliable operation.
The technological scheme that the utility model is adopted for achieving the above object is: the steam turbine semi-flexible coupling, steamer pusher side coupling dish is in the middle of inside and outside two coupling dishes positioning ring to be housed and by bolt, outer coupling dribbling has axis hole, interior coupling dribbling has big footpath through hole and path screw, path screw internal thread connects half flexible shaft coupling, half flexible shaft coupling the other end screw connection gear case side coupling dish, gear box side coupling dish is identical with steamer pusher side coupling dish structure.
Described half flexible shaft coupling is equipped with cover body outward, and the cover body two ends are contained in the both sides on the coupling dish.
The utlity model has following performance: turbine spindle power is passed to gearbox shaft, have due intensity, rigidity, guarantee main oil pump, pulse oil pump need of work.When slight decentraction occurring between gearbox shaft and turbine shaft, semi-flexible coupling can play the buffering regulating action.When parts such as main oil pump, pulse oil pump, gear break down when gearbox shaft is seriously transshipped, semi-flexible coupling can serve as easily damaged parts and at first rupture, and above vitals is played a protective role.The utility model not only possesses the repertoire of original equipment flexible coupling, and has cancelled complicated mechanical coupling member in the original structure, compact structure, reasonable, easy accessibility.Many transmission paries have been cancelled, reduced the fault point, coupling is operated steadily, safety, reliable, long service life, coupling adopts super large stress half flexible element, reliable parts locking device, the movable outer cover etc. of not dismantling, novel structure, practicality are applicable to ENG type back pressure turbine.
Description of drawings:
Fig. 1 is existing steam turbine coupler structure schematic representation.
Fig. 2 is the utility model structural representation.
Embodiment:
Steam turbine semi-flexible coupling as shown in Figure 2, steamer pusher side coupling dish is in the middle of interior coupling dish 4 and 2 two coupling dishes of outer coupling dish positioning ring 3 and fixing by bolt 7 to be housed, outer coupling dribbling has axis hole 8, interior coupling dribbling has big footpath axis hole 8 and path screw, path screw internal thread connects half flexible shaft coupling 5, the half flexible shaft coupling the other end coupling dish in the gear box side that is threaded, gear box side coupling dish is identical with steamer pusher side coupling dish structure, half flexible shaft coupling is equipped with cover body 6 outward, and the cover body two ends are installed in the both sides in the coupling dish draw-in groove.
When installing and using, turbine shaft inserts in the axis hole, and outreach axial organ dish 2 by taper pin and screw with the steamer pusher side and be connected, interior coupling dish 4, positioning ring 3 is connected with outer coupling dish 2 by bolt 7, turbine spindle power is delivered on the interior coupling dish 4, half flexible shaft coupling 5 in being associated on the coupling dish, again by coupling dish 4 in the gear box side identical with the steamer pusher side, positioning ring 3, outer coupling dish 2 usefulness bolts 7 connect, gearbox shaft inserts in the outer tray joint shaft axis hole, interior coupling dish passes through taper pin, screw is connected with outer coupling dish, cover body is equipped with in half flexible shaft coupling outside, and it is impaired effectively to protect shaft coupling, pollute etc.Like this,, turbine spindle power is delivered on the gearbox shaft 9, drives main oil pump, the work of pulse oil pump through semi-flexible coupling.
Claims (2)
1, steam turbine semi-flexible coupling, comprise steamer pusher side and gear box side coupling dish, it is characterized in that: steamer pusher side coupling dish is in the middle of inside and outside two coupling dishes positioning ring (3) and fixing by bolt (7) to be housed, outer coupling dish (2) has axis hole (8), interior coupling dish (4) has axis hole and path screw, path screw internal thread connects half flexible shaft coupling (5), half flexible shaft coupling the other end screw connection gear case side coupling dish, gear box side coupling dish is identical with steamer pusher side coupling dish structure.
2, steam turbine semi-flexible coupling according to claim 1 is characterized in that: the outer cover body (6) that is equipped with of half flexible shaft coupling (5), cover body two ends are contained in the both sides on the coupling dish (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090439 CN2888167Y (en) | 2006-04-14 | 2006-04-14 | Semi-flexible coupling for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090439 CN2888167Y (en) | 2006-04-14 | 2006-04-14 | Semi-flexible coupling for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888167Y true CN2888167Y (en) | 2007-04-11 |
Family
ID=38046737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620090439 Expired - Fee Related CN2888167Y (en) | 2006-04-14 | 2006-04-14 | Semi-flexible coupling for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2888167Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042345A (en) * | 2010-12-03 | 2011-05-04 | 丹东克隆集团有限责任公司 | Axial adjustable diaphragm coupler |
| CN103277152A (en) * | 2013-05-30 | 2013-09-04 | 浙江汽轮成套技术开发有限公司 | Installation structure of turbine main oil pump |
| CN110332247A (en) * | 2019-07-19 | 2019-10-15 | 中车株洲电力机车有限公司 | A kind of yielding coupling and rail vehicle |
-
2006
- 2006-04-14 CN CN 200620090439 patent/CN2888167Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042345A (en) * | 2010-12-03 | 2011-05-04 | 丹东克隆集团有限责任公司 | Axial adjustable diaphragm coupler |
| CN103277152A (en) * | 2013-05-30 | 2013-09-04 | 浙江汽轮成套技术开发有限公司 | Installation structure of turbine main oil pump |
| CN103277152B (en) * | 2013-05-30 | 2014-11-12 | 浙江汽轮成套技术开发有限公司 | Installation structure of turbine main oil pump |
| CN110332247A (en) * | 2019-07-19 | 2019-10-15 | 中车株洲电力机车有限公司 | A kind of yielding coupling and rail vehicle |
| CN110332247B (en) * | 2019-07-19 | 2021-10-26 | 中车株洲电力机车有限公司 | Elastic coupling and rail transit vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |