CN202691041U - Bulb through-flow turbine non-forcing water supply spindle seal - Google Patents
Bulb through-flow turbine non-forcing water supply spindle seal Download PDFInfo
- Publication number
- CN202691041U CN202691041U CN2012203125170U CN201220312517U CN202691041U CN 202691041 U CN202691041 U CN 202691041U CN 2012203125170 U CN2012203125170 U CN 2012203125170U CN 201220312517 U CN201220312517 U CN 201220312517U CN 202691041 U CN202691041 U CN 202691041U
- Authority
- CN
- China
- Prior art keywords
- seal
- main shaft
- ring
- bulb
- water supply
- 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.)
- Expired - Lifetime
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model relates to a turbine sealing structure, in particular to a bulb through-flow turbine non-forcing water supply spindle seal. The bulb through-flow turbine non-forcing water supply spindle seal is characterized in that a spindle seal comprises a first maze seal and a second flat plate seal. The maze seal arranged along a spindle axially is fixedly connected with the spindle through a half-dividing structure, and the flat plate seal is sleeved on the spindle and fixed on a movable maze ring of the maze seal through a pressing ring. The bulb through-flow turbine non-forcing water supply spindle seal structure adopts a combined structure of the maze ring and the flat plate seal so as to enable a unit to achieve a movable water sealing effect. A purpose of sealing water completely is achieved by combining real-time control of withdrawing (exhausting) during operation of seal overhauling and inputting (air inflating) during shutdown, collecting leaking water in a water seal cover at a dynamic state and a static state, and discharging the water through a connected water discharging pipe.
Description
Technical field
The utility model relates to a kind of water turbine sealing configuration, and specifically a kind of bulb through-flow turbine is without forcing the water supply type main shaft seal.
Background technique
Bulb through-flow turbine adds the pattern that cleaning supplies water again because unit hydraulic pressure is less, and rotating speed is lower, mostly adopts packing_seal, and namely the press water by the supply cleaning goes out the mode of unit inside with river course hydraulic pressure, keeps the operation of main shaft seal.Also also have other pattern, mainly contain: packing_seal, flat sealing, water pressing end face seal, non-contact gap sealing etc., and the combination seal of various types.
Except contactless clearance seal, all need realize stable operation by the mode that sealing is supplied water, and there is following problem in this mode: 1) special-purpose clean water and the power resources of technical water supply needs, the waste that has improved construction cost and the resource of engineering; 2) increased unsafe factor to unit operation, interrupted in case supply water, unit will be out of service, causes adverse consequences.
Chinese patent literature CN201874723 discloses a kind of main shaft-sealing structure for hydroturbines, comprise water sealing box, spindle seal kit, water shutoff gland, waste pipe, described spindle seal kit is sleeved on the main shaft, described water sealing box puts for minute half structure is fixed in the water turbine main body and is sleeved on described main shaft seal, the lower end of described water sealing box fixes a drainpipe, and adopts the comb structure sealing between described spindle seal kit and the described water sealing box.This technological scheme mainly by forming with the spindle seal kit of external tooth and with the water sealing box of internal tooth, is aided with the structures such as weep hole, packing_seal, and is simple in structure, can reduce friction, reaches good sealing effect.But also have the following disadvantages: 1) adopt the asbestos packing material, polluted environment water; 2) can not effectively stop wearing and tearing, silt is surface of revolution and the packing at wearing and tearing packing place constantly, working time of a specified duration need to change spindle seal kit and packing; 3) take packing as primary seal, the labyrinth is auxiliary seal, does not bring into play to greatest extent the effect of labyrinth seal.
Summary of the invention
The utility model has been done corresponding improvement for these deficiencies just: 1) cancelled asbestos packing, also just avoided pollution; 2) adopt the labyrinth to add dull and stereotyped compound mode, take labyrinth seal as primary seal, change radial labyrinth into axial labyrinth, when making labyrinth seal work, under the effect of main shaft rotatory inertia, outwards draining, hindering to greatest extent water body and silt enters to inner (left side), the a small amount of water that enters internal cavity is stopped by the mode that flat board seals the percolating water that has is again collected by manhole cover and discharged, thereby reaches multi-layer sealed effect.
Concrete technology path of the present utility model is:
Bulb through-flow turbine is without forcing the water supply type main shaft seal, it is characterized in that, main shaft seal comprises first labyrinth seal and the dull and stereotyped sealing of second, the labyrinth seal that axially arranges along main shaft is fixed in main shaft by minute half structure, and plane seal housing is fixed on the movable labyrinth ring of labyrinth seal by pressure ring after being connected to main shaft.
Described main shaft seal contains the 3rd road manhole cover.
Main shaft seal comprises
Rotatable parts with the main shaft rotation: the first seal ring, main shaft cover, movable labyrinth ring, dull and stereotyped sealing, pressure ring, wherein main shaft cover, movable labyrinth ring and pressure ring all adopt minute half structure to be fixed on the main shaft, the first seal ring is fixed on the runner, is provided with the set screw that brill is joined in the building site between movable labyrinth ring and main shaft;
Fixed component: housing, flow deflecting cone, maintenance sealing, fixedly labyrinth ring, the second seal ring, manhole cover, adpting flange.
Described dull and stereotyped sealing is " fall L " shape, is provided with together 30 ° of angular cuts, is adhesively fixed after being placed on the main shaft, then is fixed on the movable labyrinth ring by pressure ring.
Described dull and stereotyped sealing is fitted and is provided with the second seal ring.
The second seal ring hoop fixing bolt spaced apart and jack bolt.
Described the second seal ring and the dull and stereotyped surface of contact built-up welding one deck stainless steel that seals, and be provided with water chute.
The utility model bulb through-flow turbine main shaft sealing construction adopts labyrinth ring and the dull and stereotyped composite structure that seals, and makes unit reach the effect of motion water shutoff; Being equipped with when operation maintenance sealing withdraws from (exhaust) again, drops into the real-time control of (inflation) during shutdown, and the percolating water during dynamic and static two states all is collected in the manhole cover, and the mode of the water pipe that runs in discharge reaches complete water shutoff purpose.
The benefit highly significant of the utility model main shaft seal, reduced the configuration of water source construction and supply channel middle filtrator, automation control unit etc., reduced cost of investment, provide larger convenience to operation maintenance, meet client fully and propose to reducing the construction costs, improve security of operation, reduce maintenance work, reduce the requirement to environmental nuisance.
Description of drawings
Fig. 1 is the utility model main shaft sealing construction schematic representation.
Wherein, flow deflecting cone 1, the first seal ring 2, runner 3, maintenance sealing 4, main shaft 5, main shaft cover 6, loose gland 7, fixing seal ring 8, dull and stereotyped sealing 9, pressure ring 10, the second seal rings 11, manhole cover 12, adpting flange 13, housing 14.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, the technical program main shaft seal is by forming with lower member:
The parts that rotate with main shaft have: the first seal ring 2, main shaft cover 6, movable labyrinth ring 7, dull and stereotyped sealing 9, pressure ring 10.Except flat board sealing the 9, first seal ring 2, all adopt minute half structure with upper-part, dividing demifacet to be coated with sealer is connected with bolt with flange, be fixed on the main shaft 5, movable labyrinth ring 7 and 5 positioning screwns that have the building site to join brill of main shaft, each part is with bolts each other, is provided with 0 RunddichtringO between junction surface and prevents from leaking.The abrasive rubber material is adopted in dull and stereotyped sealing 9, and inverted "L" shaped formula is established together 30 ° of angular cuts, and the scene bonds together after being enclosed within on the main shaft 5 again, is fixed on the movable labyrinth ring 7 by pressure ring 10.The first seal ring 2 is fixed on the runner 3.
Fixed component has: flow deflecting cone 1, maintenance sealing 4, fixing seal ring 8, the second seal rings 11, manhole cover 12, adpting flange 13, housing 14.Fixed component also adopts minute half structure, and a minute demifacet is coated with sealer and connects with flange, and is with bolts between each part, be provided with the O RunddichtringO, be fixed on the housing by adpting flange, adjust the radial clearance of labyrinth and maintenance sealing after, the scene positioning pin hole that drills and reams is fixed each fixed component.The second seal ring 11 hoop intervals are furnished with fixing bolt and jack bolt, are connected with the fixing seal ring, can do the adjusting of axial position, to reach and the contacting of dull and stereotyped good seal.
Set structure itself be flowing water in flow deflecting cone 1 outside, and water seal is in inside, main labyrinth seal is exactly to utilize rotation motion to produce the principle of centrifugal force, and water body is outwards moved by the center, stops the internal flow of current direction unit; Dull and stereotyped sealing 9 in the situation that has a small amount of water to enter, utilizes inside and outside differential pressure as secondary seal, and the flat board sealing 9 of quality of rubber materials is contacted with the applying of the second seal ring 11, and prevention water inwardly enters; For preventing dry friction and the corrosion and damage of rubber flat plate sealing the 9 and second seal ring 11, at contact surface built-up welding one deck stainless steel of the second seal ring 11, and be provided with water chute simultaneously, play lubricated, cooling.
Claims (7)
1. bulb through-flow turbine is without forcing the water supply type main shaft seal, it is characterized in that, main shaft seal comprises first labyrinth seal and the dull and stereotyped sealing of second, the labyrinth seal that axially arranges along main shaft is fixed in main shaft by minute half structure, and plane seal housing is fixed on the movable labyrinth ring of labyrinth seal by pressure ring after being connected to main shaft.
2. bulb through-flow turbine according to claim 1 is characterized in that without forcing the water supply type main shaft seal, and described main shaft seal contains the 3rd road manhole cover.
3. bulb through-flow turbine according to claim 1 is characterized in that without forcing the water supply type main shaft seal, and main shaft seal comprises
Rotatable parts with the main shaft rotation: the first seal ring, main shaft cover, movable labyrinth ring, dull and stereotyped sealing, pressure ring, wherein main shaft cover, movable labyrinth ring and pressure ring all adopt minute half structure to be fixed on the main shaft, the first seal ring is fixed on the runner, is provided with the set screw that brill is joined in the building site between movable labyrinth ring and main shaft;
Fixed component: housing, flow deflecting cone, maintenance sealing, fixedly labyrinth ring, the second seal ring, manhole cover, adpting flange.
4. bulb through-flow turbine according to claim 1 is without forcing the water supply type main shaft seal, it is characterized in that described dull and stereotyped sealing is " L " shape, is provided with together 30 ° of angular cuts, be adhesively fixed after being placed on the main shaft, then be fixed on the movable labyrinth ring by pressure ring.
5. bulb through-flow turbine according to claim 1 is characterized in that without forcing the water supply type main shaft seal, and described dull and stereotyped sealing is fitted and is provided with the second seal ring.
6. bulb through-flow turbine according to claim 5 is characterized in that without forcing the water supply type main shaft seal, the second seal ring hoop fixing bolt spaced apart and jack bolt.
7. bulb through-flow turbine according to claim 5 is characterized in that without forcing the water supply type main shaft seal, described the second seal ring and the dull and stereotyped surface of contact built-up welding one deck stainless steel that seals, and be provided with water chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203125170U CN202691041U (en) | 2012-06-29 | 2012-06-29 | Bulb through-flow turbine non-forcing water supply spindle seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203125170U CN202691041U (en) | 2012-06-29 | 2012-06-29 | Bulb through-flow turbine non-forcing water supply spindle seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202691041U true CN202691041U (en) | 2013-01-23 |
Family
ID=47546665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203125170U Expired - Lifetime CN202691041U (en) | 2012-06-29 | 2012-06-29 | Bulb through-flow turbine non-forcing water supply spindle seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202691041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980349A (en) * | 2018-09-20 | 2018-12-11 | 重庆通用工业(集团)有限责任公司 | A kind of centrifugal blower compound seal |
-
2012
- 2012-06-29 CN CN2012203125170U patent/CN202691041U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980349A (en) * | 2018-09-20 | 2018-12-11 | 重庆通用工业(集团)有限责任公司 | A kind of centrifugal blower compound seal |
| CN108980349B (en) * | 2018-09-20 | 2024-02-06 | 重庆通用工业(集团)有限责任公司 | Composite seal for centrifugal fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |
|
| CX01 | Expiry of patent term |