CN201891548U - Operation sealing device of water turbine spindle - Google Patents
Operation sealing device of water turbine spindle Download PDFInfo
- Publication number
- CN201891548U CN201891548U CN2010206613209U CN201020661320U CN201891548U CN 201891548 U CN201891548 U CN 201891548U CN 2010206613209 U CN2010206613209 U CN 2010206613209U CN 201020661320 U CN201020661320 U CN 201020661320U CN 201891548 U CN201891548 U CN 201891548U
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- sealing
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- wear
- sealing block
- resistant ring
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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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- Sealing Devices (AREA)
- Hydraulic Turbines (AREA)
Abstract
The utility model discloses an operation sealing device of a water turbine spindle. The operation sealing device comprises a sealing mechanism formed by a sealing block, a wearing ring, a sealing box, a pressure reducing water discharge pipe, a sealing cover and an air surrounding band, wherein the sealing block below the wearing ring is sleeved at the upper end of a positioning screw in the sealing box; the lower end of the positioning screw is fixed at the bottom of the sealing box; a pressure water inlet pipe is communicated with the cavity of the sealing box at the bottom of the sealing block; the wearing ring is in tight contact with and is matched with the sealing block below the wearing ring under the action of the water inlet pressure of the pressure water inlet pipe; the sealing box is installed above the sealing cover; the pressure reducing water discharge pipe is communicated with a labyrinth slot water discharge hole inside the sealing cover; the sealing cover is arranged on a top cover of a water guide mechanism; the air surrounding band is arranged between the sealing cover and the top cover; the sealing mechanism is installed on the outer side of a rotating oil basin of the spindle; and the wearing ring is fixedly connected with the periphery of the rotating oil basin. The sealing device has a self-compensating function, reduces the overhaul frequency, prolongs the service life, has good sealing performance, and improves the operation stability of the water turbine.
Description
Technical field
The utility model relates to the working seal device of a kind of seal arrangement of water turbine, particularly a kind of hydraulic turbine main shaft.
Background technique
The rotary wheel of water turbine seal ring is in operation to produce and leaks on a small quantity, and leaking to enter the machine hole along the gap between hydraulic turbine main shaft and the fixed component, and water turbine can't normally be moved.The technical measures that head it off is taked in the prior art generally are provided with the working seal device below the hydraulic turbine main shaft bearing, this working seal device is owing to sealing block, wear-resistant ring are vulnerable part, so need often to change.Overhaul when changing after sealing block and the wearing and tearing of wear-resistant ring, remove turbine floor floor, bearing, and the disintegration turbine gate mechanism, repair time and difficulty increased.Numerous power stations are the high concentration of sediment power station especially, changes at least once in general 1 year, have in addition just changed once in two, three months, the replacing time was generally 7～10 days at every turn, directly had influence on the proper functioning of water turbine.
In addition, also have the hydraulic turbine main shaft working seal to be arranged on the structure in the bearing outside, its sealing block is a L type sealing block, closely contacts with rotating the peripheral of oil tray, and the sealing block contact surface abrasion is fast, does not have the self compensation function.
The model utility content
The purpose of this utility model provides a kind ofly to be had the self compensation function, can effectively reduce the maintenance number of times, and the hydraulic turbine main shaft working seal device of favorable sealing property.
For achieving the above object, the technological scheme taked of the utility model is:
A kind of hydraulic turbine main shaft working seal device, comprise a sealing block, it is characterized in that: described sealing block and wear-resistant ring, sealing case, the decompression waste pipe, sealing cover and air shroud are formed sealing mechanism jointly, the sealing block of wear-resistant ring below is socketed in the positioning screw upper end in the sealing case, the lower end of positioning screw is fixed on the bottom of sealing case, the pressure intake pipe is communicated with the sealing case cavity of sealing block bottom, the sealing block of wear-resistant ring and its below is tight contact matching under the effect of pressure intake pipe intake pressure, sealing case is installed in the sealing cover top, the decompression waste pipe is communicated with the maze trough weep hole of sealing cover inside, sealing cover is arranged on the top cover of water distributor, and air shroud is arranged between sealing cover and the top cover; Described sealing mechanism is installed in the outside that main shaft rotates oil tray, and wherein wear-resistant ring is fixedlyed connected with the periphery of rotating oil tray.
Described wear-resistant ring, sealing case and sealing cover are split body, between the wear-resistant ring split body, connect into a ring bodies with flange respectively between the sealing cover split body, connect into a ring bodies with tangential bolt and tangential locating stud between the sealing case split body.
Described sealing block cross section is " ∩ " shape, C type opening is bonded into whole circle, and the compensation surplus of 10 ㎜～40 ㎜ is left at its top.
The hydraulic turbine main shaft working seal device that the utility model provides, sealing block possesses the self compensation function, can prolong the working life of hydraulic turbine main shaft working seal device, reduces the maintenance number of times of hydraulic turbine main shaft working seal device, and favorable sealing property; Seal arrangement is arranged on the bearing outside, has reduced bearing height, improved the operation stability of water turbine; In addition, by wear-resistant ring, sealing case and sealing cover are arranged to split body, maintenance is convenient, do not need to remove turbine floor base plate, bearing, turbine gate mechanism does not disintegrate, significantly shorten the repair time, replacing time of former working seal device easily damaged parts was shortened to time half a day by 7～10 days, increased the generating income in power station.For example: 10 days the generated energy of unit of installation 10MW is about 2,400,000 degree, and income is about 550,000 yuan.
Description of drawings
Fig. 1: the structural representation of the working seal device of hydraulic turbine main shaft;
Fig. 2: the plan structure schematic representation of hydraulic turbine main shaft bearing shell flange;
Fig. 3: the utility model sealing case split body connection diagram;
Fig. 4: the utility model rotates oil tray split body connection diagram.
Among the figure: the wear-resistant ring of 1-, 2-sealing block, 3-positioning screw, 4-pressure intake pipe, 5-sealing case, 6-oil resistant rubber bar, the 7-waste pipe that reduces pressure, 8-sealing cover, 9-top cover, 10-air shroud, 11-rotates oil tray, 12-main shaft, 13-maze trough weep hole, 14-bearing shell flange, 15-waist-shaped hole.
Embodiment
As shown in Figures 1 to 4, among the embodiment of the hydraulic turbine main shaft working seal device that the utility model provides, it comprises sealing block 2, sealing block 2 and wear-resistant ring 1, sealing case 5, decompression waste pipe 7, sealing cover 8 and the air shroud 10 common sealing mechanisms of forming, the sealing block 2 of wear-resistant ring 1 below is socketed in positioning screw 3 upper ends in the sealing case 5, the lower end of positioning screw 3 is fixed on the bottom of sealing case 5, pressure intake pipe 4 is communicated with sealing case 5 cavitys of sealing block 2 bottoms, the sealing block 2 of wear-resistant ring 1 and its below is tight contact matching under the effect of pressure intake pipe 4 intake pressures, sealing case 5 is installed in sealing cover 8 tops, decompression waste pipe 7 is communicated with the maze trough weep hole 13 of sealing cover 8 inside, sealing cover 8 is arranged on the top cover 9 of water distributor, and air shroud 10 is arranged between sealing cover 8 and the top cover 9.Sealing mechanism is installed in the outside that main shaft rotates oil tray 11, and wherein wear-resistant ring 1 is fixedlyed connected with the periphery of rotating oil tray 11, rotates with rotating oil tray 11.Wherein, sealing block 2 is one " ∩ " shape sealing block, is that C type opening is bonded into whole circle.Working pressure water is entered by pressure intake pipe 4 in the cavity of sealing case 5, moves up at the effect lower seal piece 2 of hydraulic pressure, sealing block 2 is closely contacted, to reach sealing effect with wear-resistant ring 1; The sealing block 2 that plays leading seal action is led by positioning screw 3 in sealing case 5, becomes piston moving up and down; 10 ㎜ that sealing block 2 tops are left～40 ㎜ compensate surplus, can strengthen the axial adjustment amount of sealing block 2 after wearing and tearing, keep its sealability, prolong the working life of sealing block 2, realize its self compensation function, make hydraulic turbine main shaft working seal device reduce the maintenance number of times simultaneously.What the rotary wheel of water turbine seal ring was in operation and produces leaks on a small quantity, percolating water is along rotating the gap of oil tray 11 with sealing cover 8, the maze trough weep hole 13 of flowing through, part is leaked and silt is discharged through waste pipe 7, the remaining seal action that leaks because of wear-resistant ring 1 and sealing block 2 is blocked, thereby reaches desirable sealing effect.
In order to further facilitate maintenance, in the hydraulic turbine main shaft working seal device, wear-resistant ring 1, sealing case 5 and sealing cover 8 are split body, between wear-resistant ring 1 split body, connect into a ring bodies with flange respectively between sealing cover 8 split bodies, connect into a ring bodies with tangential bolt and tangential locating stud between sealing case 5 split bodies; Can also also be divided into split body with rotating oil tray 11, rotate between oil tray 11 split bodies and connect into a ring bodies with tangential bolt and tangential locating stud.Match with it, on hydraulic turbine main shaft bearing shell flange 14, offer waist-shaped hole 15, can change wear-resistant ring 1, sealing block 2 or other parts of wearing and tearing by waist-shaped hole 15 fast, easily.Like this, need not to remove water turbine bearing, disintegration turbine gate mechanism, just can change damaged part easily, convenient maintenance, significantly shorten the repair time, replacing time of former working seal device easily damaged parts was shortened to time half a day by 7～10 days, increased the generating income in power station.
Above-described only is preferred embodiment of the present utility model.Should be understood that those of ordinary skill, under technology enlightenment provided by the utility model, can also make other equivalent modifications and improvement, also should be considered as protection domain of the present utility model for turbine technology field.
Claims (3)
1. hydraulic turbine main shaft working seal device, comprise a sealing block, it is characterized in that: described sealing block and wear-resistant ring, sealing case, the decompression waste pipe, sealing cover and air shroud are formed sealing mechanism jointly, the sealing block of wear-resistant ring below is socketed in the positioning screw upper end in the sealing case, the lower end of positioning screw is fixed on the bottom of sealing case, the pressure intake pipe is communicated with the sealing case cavity of sealing block bottom, the sealing block of wear-resistant ring and its below is tight contact matching under the effect of pressure intake pipe intake pressure, sealing case is installed in the sealing cover top, the decompression waste pipe is communicated with the maze trough weep hole of sealing cover inside, sealing cover is arranged on the top cover of water distributor, and air shroud is arranged between sealing cover and the top cover; Described sealing mechanism is installed in the outside that main shaft rotates oil tray, and wherein wear-resistant ring is fixedlyed connected with the periphery of rotating oil tray.
2. hydraulic turbine main shaft working seal device according to claim 1, it is characterized in that: described wear-resistant ring, sealing case and sealing cover are split body, between the wear-resistant ring split body, connect into a ring bodies with flange respectively between the sealing cover split body, connect into a ring bodies with tangential bolt and tangential locating stud between the sealing case split body.
3. a kind of hydraulic turbine main shaft working seal device according to claim 1 and 2 is characterized in that: described sealing block cross section is " ∩ " shape, C type opening is bonded into whole circle, and the compensation surplus of 10 ㎜～40 ㎜ is left at its top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206613209U CN201891548U (en) | 2010-12-15 | 2010-12-15 | Operation sealing device of water turbine spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206613209U CN201891548U (en) | 2010-12-15 | 2010-12-15 | Operation sealing device of water turbine spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891548U true CN201891548U (en) | 2011-07-06 |
Family
ID=44221022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206613209U Expired - Lifetime CN201891548U (en) | 2010-12-15 | 2010-12-15 | Operation sealing device of water turbine spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891548U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003325A (en) * | 2010-12-15 | 2011-04-06 | 兰州兰电电机有限公司 | Working sealing device for water turbine spindle |
| CN102563085A (en) * | 2012-01-20 | 2012-07-11 | 华北水利水电学院 | Water-turbine flat-plate sealing device convenient to maintain |
-
2010
- 2010-12-15 CN CN2010206613209U patent/CN201891548U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003325A (en) * | 2010-12-15 | 2011-04-06 | 兰州兰电电机有限公司 | Working sealing device for water turbine spindle |
| CN102003325B (en) * | 2010-12-15 | 2013-03-13 | 兰州兰电电机有限公司 | Working sealing device for water turbine spindle |
| CN102563085A (en) * | 2012-01-20 | 2012-07-11 | 华北水利水电学院 | Water-turbine flat-plate sealing device convenient to maintain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110706 Effective date of abandoning: 20130313 |
|
| RGAV | Abandon patent right to avoid regrant |