CN203476589U - Piston type water pressure end face sealing device for spindle of water turbine - Google Patents
Piston type water pressure end face sealing device for spindle of water turbine Download PDFInfo
- Publication number
- CN203476589U CN203476589U CN201320502592.8U CN201320502592U CN203476589U CN 203476589 U CN203476589 U CN 203476589U CN 201320502592 U CN201320502592 U CN 201320502592U CN 203476589 U CN203476589 U CN 203476589U
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- Prior art keywords
- rubber ring
- water pressure
- face
- pin
- piston type
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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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- Hydraulic Turbines (AREA)
Abstract
The utility model discloses a piston type water pressure end face sealing device for a spindle of a water turbine. The piston type water pressure end face sealing device is mainly composed of a seal support, a seal base, a door-shaped piston type rubber ring, a pin, a seal frame, a rotating ring and an anti-wear block. The rotating ring and the flange face of the seal frame are coated with an anaerobic plane sealant for sealing, and an M16X40 high strength bolt is adopted for fixedly connecting the rotating ring and the seal frame. A lubricating cooling water tank is processed in the center of the end face of the rubber ring and is arranged along the whole ring of the end face of the rubber ring. A copper pin sleeve is additionally arranged in a pin hole of the rubber ring. A decompression pipe is respectively and additionally arranged in the symmetrical directions of 180 degrees, and the decompression pipes are communicated to the bottom of an annular groove and are provided with automatic decompression valves. The piston type water pressure end face sealing device for the spindle of the water turbine has the advantages of being stable and reliable in structure and easy to disassemble and maintain, and solves the problems that a rubber ring of an original device is easy to be damaged, flexibility is not good, a rotating ring is inconvenient to mount.
Description
Technical field
The utility model belongs to hydraulic turbine main shaft end face seal technical field, relates in particular to a kind of hydraulic turbine main shaft piston water pressure face seals.
Background technique
Piston water pressure face seals (hereinafter to be referred as end face seal) is a kind of main structure form of hydraulic turbine main shaft end face seal, and it is mainly comprised of sealed support, sealing seat, door type piston type rubber ring, pin, sealed support, change, the parts such as wear-resistant.The working principle of end face seal is that rubber ring upwards floats and fits tightly on wear-resistant under the effect of press water, has sealed up the water oozing out from main shaft end face and sealed support gap.There is following defect in this device: the one, and when flood duration, tailwater level raise, the press water of draft tube recoils to the lower end of rubber from the gap of main shaft end face and sealed support, thus the end face of the excessive scaling loss rubber ring of build-up of pressure; The 2nd, when pin and pin-and-hole matching gap when too small rubber ring can not float flexibly, and pin and pin-and-hole matching gap when excessive water leakage large, piston cavity underpressure, rubber ring can not float sealing flexibly; The 3rd, the Φ 4 rubber bars in change are installed inconvenience, easily get loose; The 4th, rubber ring and wear-resistant surface of contact are excessive, and impact is lubricated and cooling effect, easily scaling loss rubber ring; The 5th, sealing seat material is Ordinary Steel, and piston cavity wall gets rusty easily, and affects rubber ring and floats flexibly.
Model utility content
The technical problems to be solved in the utility model is to provide that a kind of reliable in structure is stable, dismounting is safeguarded and is easy to hydraulic turbine main shaft piston water pressure face seals.
For solving the problems of the technologies described above, the utility model is by the following technical solutions: hydraulic turbine main shaft piston water pressure face seals, mainly by sealed support, sealing seat, door type piston type rubber ring, pin, sealed support, change, wear-resistant form, directly on change and sealed support flanged surface, coat the agent of anaerobic type plane sealing as sealing, adopt M16X40 high-strength bolt to be fixedly connected with change and sealed support; At rubber ring end face center, process lubrication tank, lubrication tank is arranged along the whole circle of rubber ring end face; In the pin-and-hole of rubber ring, install copper guide additional; In the symmetrical 180 ° of orientation of sealing seat, install respectively a relief tube additional, relief tube passes to the annular groove bottom of sealing seat, establishes automatic decompression valve on relief tube.
Sealing seat adopts stainless steel material to make.
Lubrication tank width is 1/3 of rubber ring thickness, and the degree of depth is 15mm.
Copper guide is bonded in the pin-and-hole of rubber ring, the not perforate of copper guide top, and copper guide distance from top rubber ring end face is greater than 15mm.
The problem existing for current end face seal design, inventor is optimized transformation to it, mainly: cancel Φ 4 rubber bars and directly adopt sealing compound sealing; M16X40 bolt is replaced by M16X40 high-strength bolt; At rubber ring end face center, process lubrication tank, alleviate friction, increase the lubrication water yield; Install copper guide additional, reduce pin frictional force, minimizing is leaked; In piston cavity, install automatic decompression valve additional, guarantee pressure stability; Sealing seat is replaced by stainless steel sealing seat, prevents from moving and get rusty.Application the utility model can be realized automatic maintenance seal arrangement piston cavity pressure stability, reduces sealing water leakage and improve the flexibility of floating, reduce rubber ring with the frictional force of wear-resistant and improve lubrication, alleviates change and return and fill workload and improve join strength.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional hydraulic turbine main shaft piston water pressure face seals.
Fig. 2 is the structural representation of the utility model hydraulic turbine main shaft piston water pressure face seals.
In figure: 1 hydraulic turbine main shaft, 2M16X40 bolt (or M16X40 high-strength bolt), 3 Φ 4 rubber bars, 4 sealed supports, 5 changes, 6 wear-resistant, 7 annular grooves (piston cavity), 8 type piston type rubber rings, 9 pins, 10 sealing seats, 11 pressure water holes, 12 air shrouds, 13 sealed supports, 14 pressure tanks, 15 penstock, 16 lubrication tanks, 17 bronze medal guidees, 18 relief tubes, 19 automatic decompression valves.
Embodiment
As shown in Figure 1, conventional hydraulic turbine main shaft piston water pressure face seals is mainly comprised of parts such as sealed supports, sealing seat, door type piston type rubber ring, pin, sealed support, change, wear-resistant.Sealing seat 10 is arranged on sealed support 13, a type piston type rubber ring 8 is housed in sealing seat 10 and withstands on wear-resistant 6, seals up the water leaking out from the gap of sealed support 4 and sealing seat 10; Be welded on for wear-resistant 6 in change 5, change adopts M16X40 bolt 2 to be fixedly connected with sealed support, and its junction surface is by Φ 4 rubber bar 3 sealings, and sealed support 4 rotates with hydraulic turbine main shaft 1; Door type piston type rubber ring 8 acts on bottom by the hydraulic pressure from pressure tank 15 all the time by piston cavity 7, has guaranteed the sealing between stable and rubber ring and the wearing ring of piston cavity 7 pressure; In sealing seat 10, being evenly equipped with 4 pins, 9 opposite house type piston type rubber rings 8 positions and leads.Sealing seat material is Ordinary Steel.
The problem existing for overcoming the hydraulic turbine main shaft piston water pressure face seals of aforementioned routine, inventor is optimized transformation to the end face seal of Fig. 1 and has obtained the utility model, as shown in Figure 2: cancel Φ 4 rubber bars 3, directly on change 5 and sealed support 4 flanged surfaces, coat the agent of anaerobic type plane sealing as sealing, adopt M16X40 high-strength bolt 2 to replace M16X40 bolt and be fixedly connected with change 5 and sealed support 4, improve frictional force and the fastening force of change and sealed support junction surface; At rubber ring 8 end face centers, processing lubrication tank 16(width is 1/3 of rubber ring thickness, the degree of depth is 15mm), lubrication tank 16 is arranged along the whole circle of rubber ring 8 end face, meet rubber ring 8 and rotated lubricating and cooling water inflow of surface of contact with wear-resistant of change 5, make frictional surface temperature keep stable, prevent from burning glue; In the pin-and-hole of rubber ring, install copper guide 17 additional, while floating to reduce rubber ring and the frictional force of pin, improve the unsteady flexibility of rubber ring, copper guide 17 use AB are gluing to be connected in the pin-and-hole of rubber ring, the not perforate of copper guide 17 tops, copper pin 17 distance from top rubber ring 8 end faces are greater than 15mm, and the press water in piston cavity 7 can not be spilt from pin-and-hole, have guaranteed the stable of piston cavity pressure hydraulic pressure; Sealing seat 10 adopts stainless steel material to make, and changes former carbon steel sealing seat, prevents that annular groove 7 from getting rusty and having affected floating flexibly when rubber ring is worked; In the symmetrical 180 ° of orientation of sealing seat 10, install respectively a relief tube 18 additional, relief tube 18 passes to the annular groove bottom of sealing seat, establishes automatic decompression valve 19 on relief tube; When automatic decompression valve is adjusted into water pressure in annular groove (piston cavity) and is greater than 0.05MPa, releasing pressure automatically draining, in head cover drainage hole, remains on below 0.05MPa the water pressure in annular groove, prevents that the excessive generation of hydraulic pressure from burning glue accident.
Claims (4)
1. a hydraulic turbine main shaft piston water pressure face seals, mainly by sealed support, sealing seat, door type piston type rubber ring, pin, sealed support, change, wear-resistant form, it is characterized in that: directly on change and sealed support flanged surface, coat the agent of anaerobic type plane sealing as sealing, adopt M16X40 high-strength bolt to be fixedly connected with change and sealed support; At rubber ring end face center, process lubrication tank, lubrication tank is arranged along the whole circle of rubber ring end face; In the pin-and-hole of rubber ring, install copper guide additional; In the symmetrical 180 ° of orientation of sealing seat, install respectively a relief tube additional, relief tube passes to the annular groove bottom of sealing seat, establishes automatic decompression valve on relief tube.
2. hydraulic turbine main shaft piston water pressure face seals according to claim 1, is characterized in that: sealing seat adopts stainless steel material to make.
3. hydraulic turbine main shaft piston water pressure face seals according to claim 1, is characterized in that: described lubrication tank width is 1/3 of rubber ring thickness, and the degree of depth is 15mm.
4. hydraulic turbine main shaft piston water pressure face seals according to claim 1, is characterized in that: described copper guide is bonded in the pin-and-hole of rubber ring, the not perforate of copper guide top, and copper guide distance from top rubber ring end face is greater than 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320502592.8U CN203476589U (en) | 2013-08-16 | 2013-08-16 | Piston type water pressure end face sealing device for spindle of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320502592.8U CN203476589U (en) | 2013-08-16 | 2013-08-16 | Piston type water pressure end face sealing device for spindle of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476589U true CN203476589U (en) | 2014-03-12 |
Family
ID=50224929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320502592.8U Expired - Lifetime CN203476589U (en) | 2013-08-16 | 2013-08-16 | Piston type water pressure end face sealing device for spindle of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476589U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397972A (en) * | 2013-08-16 | 2013-11-20 | 大唐岩滩水力发电有限责任公司 | Piston type water pressure end face sealing device for water turbine main shaft |
-
2013
- 2013-08-16 CN CN201320502592.8U patent/CN203476589U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397972A (en) * | 2013-08-16 | 2013-11-20 | 大唐岩滩水力发电有限责任公司 | Piston type water pressure end face sealing device for water turbine main shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |
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| CX01 | Expiry of patent term |