CN207349009U - A kind of horizontal axis Francis turbine generating set shaft seal - Google Patents
A kind of horizontal axis Francis turbine generating set shaft seal Download PDFInfo
- Publication number
- CN207349009U CN207349009U CN201721377660.7U CN201721377660U CN207349009U CN 207349009 U CN207349009 U CN 207349009U CN 201721377660 U CN201721377660 U CN 201721377660U CN 207349009 U CN207349009 U CN 207349009U
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- CN
- China
- Prior art keywords
- main shaft
- seal
- stainless steel
- seal receptacle
- horizontal axis
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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 kind of horizontal axis Francis turbine generating set shaft seal, including main shaft, the surface of the main shaft is provided with stainless steel sleeve, and the bottom of the stainless steel sleeve is provided with the multi-head spiral groove being adapted with main shaft.The horizontal axis Francis turbine generating set shaft seal, using the reverse thread stop water opposite with unit rotation direction, it can effectively stop current and produce leakage by main shaft, stainless steel wear-resistant sleeve is installed on main shaft, the helicla flute opposite with main shaft direction of rotation is machined with seal receptacle, there is gap between stainless steel sleeve and seal receptacle, when compressor emergency shutdown or the slow-speed of revolution are run water is full of in this gap, with the rising of rotating speed, current are in spiral oppositely oriented eddy generation friction, produce pressure head and overcome leakage, when rotational speed of water turbine is higher, block-water effect is better, and the utility model is rational in infrastructure, it is easy to use.
Description
Technical field
Technical field of generators is the utility model is related to, is specially that a kind of horizontal axis Francis turbine generating set main shaft is close
Sealing.
Background technology
Hydrogenerator refers to the generator that water can be converted into electric energy using the hydraulic turbine as prime mover.Current pass through the hydraulic turbine
When, water can be converted into mechanical energy, the shaft of the hydraulic turbine drives the rotor of generator again, converts mechanical energy into electric energy and defeated
Go out.It is the main dynamics equipment of power station production electric energy.
Hydrogenerator sealing is exactly a main problem perplexing power station normal operation all the time, many power station sheets
, also not to the time between overhauls(TBO), to be overhauled without shutdown, exactly because sealing leakage occurs and seriously affects power plant safety fortune
Row has to repair in advance.The use of high water head is sealed in horizontal axis Francis turbine generating set using traditional comb-tooth-type
In easily there is drainage, the normal operation of unit is influenced, for this reason, a kind of it is proposed that horizontal axis Francis turbine generator
Group shaft seal.
Utility model content
The purpose of this utility model is to provide a kind of horizontal axis Francis turbine generating set shaft seal, to solve
The problem of being proposed in background technology.
To achieve the above object, the utility model provides following technical solution：A kind of horizontal axis Francis turbine generator
Group shaft seal, including main shaft, the surface of the main shaft are provided with stainless steel sleeve, the bottom of the stainless steel sleeve be provided with
The multi-head spiral groove that main shaft is adapted, the surface of the main shaft and is provided with seal receptacle on the right side of the stainless steel sleeve, described close
One end of envelope seat is provided with screw, and the first rubber bar is provided with below the screw, and the top of the seal receptacle side is set
There is seal closure, the seal closure and seal receptacle are tightly connected by the second rubber bar, and observation is offered at the top of the seal closure
Hole, the top of the seal closure and the position identical with peep hole are fixedly connected by the first pin, the seal receptacle side
Bottom is provided with packing, and pressure ring is provided with the right side of the packing, and the pressure ring is fixedly connected with seal receptacle by the 4th pin,
The top of the main shaft and plate washer is installed with the right side of the pressure ring, the top of side and plate washer at the top of the seal closure
It is fixedly connected respectively by the second pin and the 3rd pin with fixed plate, the top of the main shaft and the inside setting for being located at plate washer
There is water shutoff circle.
Preferably, the seal receptacle afterbody adds dovetail groove, and packing is placed in the dovetail groove.
Preferably, there is gap between the seal receptacle and stainless steel sleeve, current flow to gap herein from water-turbine top cover,
When this sealing is installed in power station, pay attention to by this gap adjust to uniformly after can just be fixed.
Preferably, the stainless steel sleeve is fixed in the surface of main shaft by the technique of hot jacket.
Compared with prior art, the utility model has the advantages that：The horizontal axis Francis turbine generating set
Shaft seal, using the reverse thread stop water opposite with unit rotation direction, can effectively stop current and passes through main shaft
Leakage is produced, stainless steel wear-resistant sleeve is installed on main shaft, the helicla flute opposite with main shaft direction of rotation is machined with seal receptacle, no
There is gap between rust steel bushing and seal receptacle, be full of water in this gap when compressor emergency shutdown or the slow-speed of revolution are run, it is upper with rotating speed
Rise, current produce pressure head and overcome leakage in spiral oppositely oriented eddy generation friction, when rotational speed of water turbine is higher, block water
Effect is better, and the utility model is rational in infrastructure, easy to use.
Brief description of the drawings
Fig. 1 is the utility model front view structural representation.
In figure：1 main shaft, 2 stainless steel sleeves, 3 multi-head spiral grooves, 4 seal receptacles, 5 screws, 6 seal closures, 7 peep holes, 8 first
Pin, 9 plate washers, 10 fixed plates, 11 second pins, 12 the 3rd pins, 13 packings, 14 pressure rings, 15 the 4th pins, 16 first rubbers
Bar, 17 second rubber bars, 18 water shutoff circles.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the utility model provides a kind of technical solution：A kind of horizontal axis Francis turbine generating set main shaft
Seal, including main shaft 1, the surface of main shaft 1 are provided with stainless steel sleeve 2, and stainless steel sleeve 2 is fixed in by the technique of hot jacket
The surface of main shaft 1, compared with ordinary steel stainless steel sleeve 2 and hot cover process processing make it have more preferable wearability and corrosion-resistant
Property, the bottom of stainless steel sleeve 2 are provided with the multi-head spiral groove 3 being adapted with main shaft 1, the surface of main shaft 1 and are located at stainless steel sleeve 2
Right side be provided with seal receptacle 4,4 afterbody of seal receptacle adds dovetail groove, places packing 13 in dovetail groove, and the dovetail groove added can be with
The placement of packing 13 is more stablized, there is gap between seal receptacle 4 and stainless steel sleeve 2, current flow to herein from water-turbine top cover
Gap, when this sealing is installed in power station, pay attention to by this gap adjust to uniformly after can just be fixed, one end of seal receptacle 4 is set
Screw 5 is equipped with, the lower section of screw 5 is provided with the first rubber bar 16, and seal receptacle is provided with seal closure 6, seal closure at the top of 4 side
6 and seal receptacle 4 be tightly connected by the second rubber bar 17, the top of seal closure 6 offers peep hole 7, the top of seal closure 6 and
The position identical with peep hole 7 is fixedly connected by the first pin 8, and the bottom of 4 side of seal receptacle is provided with packing 13, packing 13
Right side be provided with pressure ring 14, pressure ring 14 is fixedly connected with seal receptacle 4 by the 4th pin 15, the top of main shaft 1 and positioned at pressure
The right side of ring 14 is installed with plate washer 9, and the side at the top of seal closure 6 and the top of plate washer 9 pass through 11 He of the second pin respectively
3rd pin 12 is fixedly connected with fixed plate 10, the top of main shaft 1 and is internally provided with water shutoff circle 18 positioned at plate washer 9.
In use, first, seal receptacle 4, being formed after closing, is machined with and main shaft 1 by two points of halfbodies in 4 inner circle of seal receptacle
The opposite multi-head spiral groove 3 in direction of rotation, afterbody is also machined with 2/3rds dovetail groove and pressure ring 14 is used cooperatively, seal receptacle
There is gap between 4 and stainless steel sleeve 2, current flow to gap herein from water-turbine top cover, and when this sealing is installed in power station, paying attention to will
This gap adjust to uniformly after can just be fixed, since 1 rotation direction of main shaft and multi-head spiral groove 3 are oppositely oriented, main shaft 1 revolves
Pressure during turning between fixed plate 10 and seal receptacle 4 is less than the pressure between seal receptacle 4 and stainless steel sleeve 2, with rotating speed
Continuous rising, pressure differential is constantly increasing, so as to achieve the purpose that leak-stopping, seal closure 6 is that conjunction is formed by two points of halfbodies, it
Sealed between seal receptacle 4 by the first rubber bar 16, peep hole 7 is provided with seal closure 6, the effect of peep hole 7 is
It is in the case where not removing main shaft 1 and sealing to being cleared up inside seal closure 6, mud of the inside etc. is clean with pressure flush of water
Closed afterwards with the first pin 8, to ensure that the multiple thread groove 3 inside seal receptacle 4 works normally, in unit running process
It is generally necessary to observe main shaft 1 seal inner case, pressure ring 14 is that conjunction is formed by two points of halfbodies, be machined with 1/3rd it is trapezoidal
Groove, the main function of pressure ring 14 are to be compressed packing 13 with the 4th pin 15, and hydraulic generator is being shut down to rated speed
All there can be rotating speed to rise this process between operating, then the leak during the slow-speed of revolution is sealed by packing 13, this road
Sealing solves leak during starting up.
While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from the principle of the utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of horizontal axis Francis turbine generating set shaft seal, including main shaft (1), it is characterised in that：The main shaft
(1) surface is provided with stainless steel sleeve (2), and the bottom of the stainless steel sleeve (2) is provided with the bull spiral shell being adapted with main shaft (1)
Spin slot (3), the surface of the main shaft (1) and is provided with seal receptacle (4), the seal receptacle (4) on the right side of the stainless steel sleeve (2)
One end be provided with screw (5), the first rubber bar (16) is provided with below the screw (5), seal receptacle (4) side
Top is provided with seal closure (6), and the seal closure (6) and seal receptacle (4) are tightly connected by the second rubber bar (17), described close
Peep hole (7) is offered at the top of sealing cover (6), the top and the position identical with peep hole (7) of the seal closure (6) pass through
One pin (8) is fixedly connected, and the bottom of seal receptacle (4) side is provided with packing (13), is set on the right side of the packing (13)
Pressure ring (14) is equipped with, the pressure ring (14) is fixedly connected with seal receptacle (4) by the 4th pin (15), the top of the main shaft (1)
Portion and plate washer (9) is installed with the right side of the pressure ring (14), the top of side and plate washer (9) at the top of the seal closure (6)
Portion is fixedly connected by the second pin (11) and the 3rd pin (12) with fixed plate (10) respectively, the top of the main shaft (1) and
Water shutoff circle (18) is internally provided with positioned at plate washer (9).
A kind of 2. horizontal axis Francis turbine generating set shaft seal according to claim 1, it is characterised in that：Institute
State seal receptacle (4) afterbody and add dovetail groove, packing (13) is placed in the dovetail groove.
A kind of 3. horizontal axis Francis turbine generating set shaft seal according to claim 1, it is characterised in that：Institute
Stating has gap between seal receptacle (4) and stainless steel sleeve (2), current flow to gap herein from water-turbine top cover, this is installed in power station
During sealing, pay attention to by this gap adjust to uniformly after can just be fixed.
A kind of 4. horizontal axis Francis turbine generating set shaft seal according to claim 1, it is characterised in that：Institute
State the surface that stainless steel sleeve (2) is fixed in main shaft (1) by the technique of hot jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721377660.7U CN207349009U (en) | 2017-10-24 | 2017-10-24 | A kind of horizontal axis Francis turbine generating set shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721377660.7U CN207349009U (en) | 2017-10-24 | 2017-10-24 | A kind of horizontal axis Francis turbine generating set shaft seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207349009U true CN207349009U (en) | 2018-05-11 |
Family
ID=62355643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721377660.7U Active CN207349009U (en) | 2017-10-24 | 2017-10-24 | A kind of horizontal axis Francis turbine generating set shaft seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207349009U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457095A (en) * | 2020-05-07 | 2020-07-28 | 王以军 | Double-thread sealing device of water pump turbine |
-
2017
- 2017-10-24 CN CN201721377660.7U patent/CN207349009U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457095A (en) * | 2020-05-07 | 2020-07-28 | 王以军 | Double-thread sealing device of water pump turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191223 Address after: 311500 Chai Mei Road, Tonglu Economic Development Zone, Tonglu County, Hangzhou, Zhejiang 138 Patentee after: Zhejiang Pioneer Technology Co., Ltd Address before: 311500 Chai Mei Road, Tonglu Economic Development Zone, Tonglu County, Hangzhou, Zhejiang 138 Patentee before: Zhejiang pan Hai Hydropower Equipment Co., Ltd. |