CN202520961U - Overhauling sealing structure for water turbine - Google Patents
Overhauling sealing structure for water turbine Download PDFInfo
- Publication number
- CN202520961U CN202520961U CN2012201081888U CN201220108188U CN202520961U CN 202520961 U CN202520961 U CN 202520961U CN 2012201081888 U CN2012201081888 U CN 2012201081888U CN 201220108188 U CN201220108188 U CN 201220108188U CN 202520961 U CN202520961 U CN 202520961U
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- Prior art keywords
- sealing
- air shroud
- water turbine
- seat
- air
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- Expired - Lifetime
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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
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Abstract
The utility model discloses an overhauling sealing structure for a water turbine. The overhauling sealing structure comprises a sealing seat, an air shroud ring, a sealing cover and a supporting seat, wherein the supporting seat is connected with the sealing seat through a fastener; an air nozzle of the air shroud ring is positioned on a combined surface between the sealing seat and the sealing cover; and the sealing cover and the supporting seat are arranged fixedly. In the overhauling sealing structure for the water turbine provided by the utility model, the air nozzle of the air shroud ring is arranged on the combined surface between the overhauling sealing seat and the overhauling sealing cover on the premise of not changing an integral structure, and the overhauling sealing cover is combined with the supporting seat; and the entire sealing structure is fastened on a water turbine top covet through a fastening bolt, the width of the air shroud ring is increased simultaneously, and the overhauling quality of the air shroud ring is ensured.
Description
Technical field
The utility model relates to a kind of water turbine maintenance sealing structure, is used for the maintenance of hydraulic turbine main shaft sealing.
Background technique
Water turbine maintenance sealing is one of hydraulic turbine main shaft sealing critical piece, and its effect mainly is the carrying out of guaranteeing under the high tailwater elevation condition lower main axis working seal damage situation smoothly of maintenance or unit maintenance, inspection work.Mainly there is following problem in large-scale mixed unit water turbine maintenance sealing structure:
1), dismounting complex procedures:
Maintenance sealing seat, maintenance sealing cover and supporting base three parts are fastened on the top cover by three circle bolt layerings respectively, so not only form redundant; And in changing the air shroud process; The simplest and the most direct operation also must be at first with cover plate, water tank, peripheral pipeline complete removal; Remove supporting base and maintenance sealing cover then successively; This two parts are sling behind enough height merging integral body, removed the maintenance sealed base again and it is sling, could change air shroud.
2), site space is narrow and small:
The space is narrow and small in the water-turbine top cover; The about 968mm of main shaft seal place total height; And cover plate and water pilot bearing oil tray basal spacing are from about 20mm; The about 700mm of the radial space of water tank and top cover, and be covered with the various pipelines of top cover gusset, Ifold flange, water pilot bearing and water seal on every side, space capable of using is very limited.And because all big (the about 4400mm of main shaft seal external diameter of each part dimension of main shaft seal; Cover plate, water tank are the pintongs design); Do not have enough spaces to place after parts such as cover plate, the water tank dismountings, must bundle and be fixed on the rugged gusset of top cover, the job safety risk is higher.
3), the air shroud repair quality can not guarantee:
In the existing structure, the air shroud valve is very short, and the shroud supply air line is from outside to inside successively: air chamber, Sealed casing pipe, air shroud valve, the air shroud of outside air supply pipe, maintenance sealing seat.The air shroud gas nozzle structure of a plurality of joints is unreasonable, is sealed into the radial extrusion type sealing because it connects the position, causes supply air line gas leakage easily.
1., leak gas between shroud valve and sleeve pipe: the shroud existing structure is established an O RunddichtringO for the valve outer ring, and on valve Sealed casing pipe of suit, as easy as rolling off a log damage O RunddichtringO when being sealed in assembling between valve and sleeve pipe, and then cause seal failure.
2., leak gas between Sealed casing pipe and maintenance sealing seat: an O RunddichtringO is also established in the Sealed casing pipe outer ring of above-mentioned shroud valve assembling, and when assembling, the bobbin seal circle must sustain damage, and sealability is affected and leaks gas.
3., leak gas between valve and the shroud: because in the existing design; The about 20mm of shroud total thickness, wall thickness are less than 6mm, and shroud valve size is less; Cause between valve and shroud glueing joint insecure, the slight impact in installation process, distortion promptly cause and damage and cause shroud gas leakage.
Summary of the invention
For solving the problems of the technologies described above; The utility model provides a kind of water turbine maintenance sealing structure; Do not changing under the integrally-built prerequisite; The air shroud valve is installed on the combinating face of maintenance sealing seat and maintenance sealing cover, and will overhauls sealing cover and supporting base is combined, and be fastened on the water-turbine top cover through clamping bolt integral body.Increase the width of air shroud simultaneously, guarantee the repair quality of air shroud.
The above-mentioned purpose of the utility model is to realize through such technological scheme: a kind of water turbine maintenance sealing structure; Comprise sealing seat, air shroud, sealing cover; Supporting base; Said supporting base is connected through fastening piece with sealing seat, and the valve of said air shroud is positioned at the combinating face position of sealing seat and sealing cover, sealing cover and supporting base fixed installation.
The width of said air shroud is 35 ± 1mm.
The valve length of said air shroud is greater than the width of sealing seat.
The combinating face of said sealing seat and sealing cover is provided with sealer.
Be positioned at sealing seat and the sealing cover outside, the air shroud mounting point is provided with sealing plane, said sealing plane position is provided with sealing gasket.
Said fastening piece is a clamping bolt.
A kind of water turbine maintenance sealing structure of the utility model in the maintenance air shroud process, no longer need be dismantled sealing seat, also need sealing cover and supporting base not decomposed under one situation.Only need clamping bolt be dismantled, top integral body sling to overhaul air shroud then.
Increase the air shroud size to increase its wall thickness, increase the service life, help the sealability of the connection part of air shroud and its valve.Lengthening air shroud valve makes the width of valve length greater than base, directly is connected with external air supply pipe, reduces the supply air line leak source, and then guarantees the repair quality of air shroud.
Be positioned at sealing seat and the sealing cover outside, the air shroud mounting point is provided with sealing plane, increase one deck sealing gasket during assembling and leak to prevent air shroud valve place.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Fig. 1 is the utility model apparatus structure schematic representation.
Embodiment
As shown in Figure 1, a kind of water turbine maintenance sealing structure comprises sealing seat 1; Air shroud 2; Sealing cover 3, supporting base 4, said supporting base 4 and sealing seat 1 are connected through fastening piece; The valve of said air shroud 2 is positioned at the combinating face position of sealing seat 1 and sealing cover 3, sealing cover 3 and supporting base 4 fixed installations.Fastening piece adopts clamping bolt.
The width of air shroud 2 is 35 ± 1mm.
The valve length of air shroud 2 is greater than the width of sealing seat 1.
The combinating face of sealing seat 1 and sealing cover 3 is provided with sealer.
Be positioned at sealing seat 1 and be provided with sealing plane with sealing cover 3 outsides, air shroud 2 mounting points, said sealing plane position is provided with sealing gasket.
Embodiment:
Do not changing under the integrally-built prerequisite, with the combinating face position of the valve of air shroud 2 design, and with sealing cover 3 and supporting base 4 fixed installation combinations, and be fastened on the water-turbine top cover through clamping bolt integral body at sealing seat 1 and sealing cover 3.
In maintenance air shroud 2 processes, no longer need dismantle sealing seat 1, need sealing cover 3 and supporting base 4 not decomposed generally speaking yet.Only need clamping bolt be dismantled, then with air shroud gland 5 with top cover labyrinth 3, the supporting base 4 integral body 100mm that slings can accomplish the service work of air shroud 2.
Increase the width of air shroud 2, increase to 35mm by original about 20mm.
The valve of lengthening air shroud 2 increases to 130mm by original 15mm, makes the width of valve length greater than sealing seat 1, directly is connected with external air supply pipe 6.
In addition, be positioned at sealing seat 1 and be provided with sealing plane, increase one deck sealing gasket during assembling with sealing cover 3 outsides, air shroud 2 mounting points.
The utility model device needs the combinating face between sealing seat 1 and sealing cover 3 to be coated with flat sealant, and installs planar sealing pad additional in the valve outer end of air shroud 2, to avoid valve place percolating water when returning dress.
Claims (6)
1. water turbine maintenance sealing structure; Comprise sealing seat (1), air shroud (2), sealing cover (3); Supporting base (4); It is characterized in that: said supporting base (4) is connected through fastening piece with sealing seat (1), and the valve of said air shroud (2) is positioned at the combinating face position of sealing seat (1) and sealing cover (3), sealing cover (3) and supporting base (4) fixed installation.
2. according to the said a kind of water turbine maintenance sealing structure of claim 1, it is characterized in that: the width of said air shroud (2) is 35 ± 1mm.
3. according to the said a kind of water turbine maintenance sealing structure of claim 1, it is characterized in that: the valve length of said air shroud (2) is greater than the width of sealing seat (1).
4. according to the said a kind of water turbine maintenance sealing structure of claim 1, it is characterized in that: the combinating face of said sealing seat (1) and sealing cover (3) is provided with sealer.
5. according to the said a kind of water turbine maintenance sealing structure of claim 1, it is characterized in that: be positioned at sealing seat (1) and sealing cover (3) outside, air shroud (2) mounting point is provided with sealing plane, said sealing plane position is provided with sealing gasket.
6. according to the said a kind of water turbine maintenance sealing structure of claim 1, it is characterized in that: said fastening piece is a clamping bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201081888U CN202520961U (en) | 2012-03-21 | 2012-03-21 | Overhauling sealing structure for water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201081888U CN202520961U (en) | 2012-03-21 | 2012-03-21 | Overhauling sealing structure for water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520961U true CN202520961U (en) | 2012-11-07 |
Family
ID=47103913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201081888U Expired - Lifetime CN202520961U (en) | 2012-03-21 | 2012-03-21 | Overhauling sealing structure for water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641273A (en) * | 2017-02-24 | 2017-05-10 | 自贡兆强环保科技股份有限公司 | Magnetic liquid seal device for chemical reactor and control system for magnetic liquid seal device |
-
2012
- 2012-03-21 CN CN2012201081888U patent/CN202520961U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641273A (en) * | 2017-02-24 | 2017-05-10 | 自贡兆强环保科技股份有限公司 | Magnetic liquid seal device for chemical reactor and control system for magnetic liquid seal device |
| CN106641273B (en) * | 2017-02-24 | 2018-02-06 | 自贡兆强环保科技股份有限公司 | A kind of chemical reactor magnetic fluid seal device and its control system |
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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: 20121107 |
|
| CX01 | Expiry of patent term |