CN101793220A - Vertical face sealing strips for guide vanes of water turbine - Google Patents
Vertical face sealing strips for guide vanes of water turbine Download PDFInfo
- Publication number
- CN101793220A CN101793220A CN201010114144A CN201010114144A CN101793220A CN 101793220 A CN101793220 A CN 101793220A CN 201010114144 A CN201010114144 A CN 201010114144A CN 201010114144 A CN201010114144 A CN 201010114144A CN 101793220 A CN101793220 A CN 101793220A
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- China
- Prior art keywords
- stamping steel
- steel ribbon
- sealing strips
- guide vanes
- vertical face
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Hydraulic Turbines (AREA)
Abstract
The invention relates to vertical face sealing strips for movable guide vanes of a water turbine, which comprise sealing strip bodies of which the cross sections are in a shape of an isosceles trapezoid with a circular arc on the upper part. The sealing strips are characterized in that each integral sealing strip body consists of a left sealing strip and a right sealing strip, and have the advantages that the sealing strips are improved according to the water wheel guide vanes of operated power stations and are prevented from being torn and falling off by using a non-pressure plate structure with washing resistance, gas etching material resistance and convenient overhauling and replacement; the periphery and upper and lower joints of the sealing strips are insusceptible to water seepage; the sealing strips are convenient to install due to loose manufacturing; and soft adhesive glue is adopted to perform filling and cementation, so that the installation problem of the last sealing strip of each guide vane is solved.
Description
Technical field
The invention belongs to water turbine, relate in particular to a kind of water turbine movable guide vane vertical face sealing strips that carries out the sealing configuration transformation at the operation power station of going into operation.
Background technique
The stator of turbine gate mechanism reaches according to the variation of operating mode and regulates the purpose that enters hydraulic turbine discharge in top cover and the rotation of base ring spaced winding self axis.Therefore, rotate flexibly between top cover and base ring for making stator, just have end face and gap of vertical surface inevitably, the existence in this gap is very big to the startup-shutdown influence of unit.Utilize braking system to shut down in the unit operation, behind the brake off, unit has both been wasted waterpower resourses because the effect slow-speed that stator leaks directly has influence on the safe operation of unit, brings hidden danger to safety in production again.Power station guide vanes of water turbine facade adopts Stamping Steel Ribbon formula sealing configuration at present.Its structure is to open dovetail groove dress hollow seal bar at the stator sealing surface.The cross section is the hollow seal bar of isosceles trapezoid and can be when mounted with brute force its distortion is packed in the groove, but when water wheels were worked, the hollow seal bar was very easily washed out by water.Change Stamping Steel Ribbon for convenience, can prevent from again to be washed out by water, at present, guide vanes of water turbine facade sealing configuration adopts the pressing plate form, is convenient to maintenance and replacing.But this structure is prefabricated come out when new unit design only, just can use.In the time of will changing Stamping Steel Ribbon for the turbine gate mechanism that adopts hollow seal bar structure in the power station of having gone into operation, must be with the water distributor complete removal, and process dovetail groove again, sealing configuration transformed to adopt the pressing plate form, can imagine that the water wheels stator of old structure is transformed real difficulty is very big.
Summary of the invention
The present invention is in order to overcome deficiency of the prior art, provide a kind of adopt anti-ly wash away, anti-cavitation erosion material and maintenance, replacing are convenient, the hydraulic turbine generator vertical face sealing strips for guide vanes of no presser type structure.
The present invention for achieving the above object, be achieved through the following technical solutions: a kind of water turbine movable guide vane vertical face sealing strips, comprise that the cross section is the weatherstrip body of the isosceles trapezoid of top band circular arc, is characterized in that: described weatherstrip body constitutes integral sealing bar body by left part Stamping Steel Ribbon and right part Stamping Steel Ribbon two-part.
The described middle stiffening rib slot that is angle with the base that is provided with of integral sealing bar body that is made of left part Stamping Steel Ribbon and right part Stamping Steel Ribbon, groove is built-in with the stiffening rib that cooperates with it.
Described integral sealing bar body is divided into plurality of sections along its length, and its every segment length is 400-600mm.
Be provided with soft adhesive layer between described left part Stamping Steel Ribbon and the right part Stamping Steel Ribbon surface of contact.
Beneficial effect: the water wheels stator at the operation power station of going into operation improves Stamping Steel Ribbon, adopts anti-ly wash away, anti-cavitation erosion material and maintenance, replacing make things convenient for, no presser type structure, make Stamping Steel Ribbon be difficult for being torn or coming off.Around the Stamping Steel Ribbon and the place's antileaking that combines between the higher and lower levels.Do not too tightly because of Stamping Steel Ribbon, be convenient to install.Adopt soft adhesive glue to fill, bond, also solved the installation question of each stator the last item Stamping Steel Ribbon.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of left part Stamping Steel Ribbon among Fig. 1;
Fig. 3 is the structural representation of right part Stamping Steel Ribbon among Fig. 1.
Embodiment
Below in conjunction with preferred embodiment, to details are as follows according to embodiment provided by the invention.
See accompanying drawing for details, a kind of hydraulic turbine generator vertical face sealing strips for guide vanes comprises weatherstrip body 1, and described weatherstrip body constitutes integral sealing bar body by left part Stamping Steel Ribbon 2 and right part Stamping Steel Ribbon 3 two-part, and the weatherstrip body cross section is the isosceles trapezoid of top band circular arc.Be provided with in the middle of the described integral sealing bar body that is made of left part Stamping Steel Ribbon and right part Stamping Steel Ribbon that to be angle with the base be 25 ° stiffening rib slot 4, groove is built-in with the stiffening rib 5 that cooperates with it, and stiffening rib adopts stainless steel strip.Described integral sealing bar body is divided into plurality of sections along its length, and its every segment length is 400-600mm.Be provided with soft adhesive layer 6 between described left part Stamping Steel Ribbon and the right part Stamping Steel Ribbon surface of contact.Stamping Steel Ribbon adopts polyurethane material, it be with CHDI (extraordinary vulcabond) make polyurethane elastomer.It also has better machining property, excellent anti-hydrolytic performance, high softening temperature (can reach 270 ℃), low glass transition temperature (-80 ℃ approximately), excellent mechanical property (shore hardness, tear strength, tensile strength, elongation percentage etc.) except the performance that keeps general polyurethane.
Installation process:
One, on the whole length of stator Stamping Steel Ribbon is divided into several sections, single fundamental length is 500mm;
Two, every section Stamping Steel Ribbon is divided into left part Stamping Steel Ribbon and right part Stamping Steel Ribbon two-part, and trapezoidal Stamping Steel Ribbon is 45 ° of angles from middle and base and is divided into left part Stamping Steel Ribbon and right part Stamping Steel Ribbon two-part.The left part Stamping Steel Ribbon is put into the dovetail groove bottom land of stator earlier, puts into the right part Stamping Steel Ribbon again; The bottom width of right part Stamping Steel Ribbon is slightly less than upper width so that put into.Can rap with hammer during installation, make it to fit with groove, both upper ends thereof flushes, does not have projection with groove face;
Three, stiffening rib slot: wide 3mm, long 13mm.Insert wide 3mm from being unkitted Stamping Steel Ribbon stiffening rib slot opening, the stainless steel strip of long 13mm is to fix;
In the whole erection process, between left part Stamping Steel Ribbon and right part Stamping Steel Ribbon junction plane, Stamping Steel Ribbon and groove surface of contact, upper-lower seal bar, all coat soft Bond on the stainless steel strip, soft Bond adopts commercially available polyurethane adhesive, as sealing between the polyurethane and between polyurethane and the steel and bonding usefulness.
Adopt the benefit of soft Bond: make Stamping Steel Ribbon be difficult for being torn or coming off; Make around the Stamping Steel Ribbon and the place's antileaking that combines between the higher and lower levels; Stamping Steel Ribbon is done not too tightly, is convenient to install; Fill, bond by glue, also solved the installation question of each stator the last item Stamping Steel Ribbon.When the last item Stamping Steel Ribbon is put to advance stainless steel strip, utilize the soft Bond of implanting to serve as stiffening rib.
The above only is preferred embodiment of the present invention, is not structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technological scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1. water turbine movable guide vane vertical face sealing strips, comprise that the cross section is the weatherstrip body of the isosceles trapezoid of top band circular arc, is characterized in that: described weatherstrip body constitutes integral sealing bar body by left part Stamping Steel Ribbon and right part Stamping Steel Ribbon two-part.
2. vertical face sealing strips for guide vanes of water turbine according to claim 1 is characterized in that: the described middle stiffening rib slot that is angle with the base that is provided with of integral sealing bar body that is made of left part Stamping Steel Ribbon and right part Stamping Steel Ribbon, groove is built-in with the stiffening rib that cooperates with it.
3. vertical face sealing strips for guide vanes of water turbine according to claim 1 is characterized in that: described integral sealing bar body is divided into plurality of sections along its length, and its every segment length is 400-600mm.
4. vertical face sealing strips for guide vanes of water turbine according to claim 1 is characterized in that: be provided with soft adhesive layer between described left part Stamping Steel Ribbon and the right part Stamping Steel Ribbon surface of contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010114144A CN101793220A (en) | 2010-02-26 | 2010-02-26 | Vertical face sealing strips for guide vanes of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010114144A CN101793220A (en) | 2010-02-26 | 2010-02-26 | Vertical face sealing strips for guide vanes of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101793220A true CN101793220A (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010114144A Pending CN101793220A (en) | 2010-02-26 | 2010-02-26 | Vertical face sealing strips for guide vanes of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101793220A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065670A (en) * | 2015-07-29 | 2015-11-18 | 平湖阿莱德实业有限公司 | Non-stretch high-precision assembled elastic shielding sealing strip |
| CN105604768A (en) * | 2016-03-16 | 2016-05-25 | 黄河水利委员会黄河水利科学研究院 | Steel-plastic composite polyurethane movable guide vane facade sealing device |
| CN106640480A (en) * | 2017-02-24 | 2017-05-10 | 西华大学 | Water-spraying guide vane capable of improving deviation of optimum operating condition of water turbine |
| CN113521823A (en) * | 2020-04-17 | 2021-10-22 | 美卓奥图泰芬兰有限公司 | Sealing strip, filter frame subassembly and filtration equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU618569A2 (en) * | 1976-10-25 | 1978-08-05 | Производственное Объединение Турбостроения "Ленинградский Металлический Завод" | End face seal of hydraulic machine vanes |
| CN201650556U (en) * | 2010-02-26 | 2010-11-24 | 天津市发电技术设备有限公司 | Sealing strip for vertical surface of water turbine guide vane |
-
2010
- 2010-02-26 CN CN201010114144A patent/CN101793220A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU618569A2 (en) * | 1976-10-25 | 1978-08-05 | Производственное Объединение Турбостроения "Ленинградский Металлический Завод" | End face seal of hydraulic machine vanes |
| CN201650556U (en) * | 2010-02-26 | 2010-11-24 | 天津市发电技术设备有限公司 | Sealing strip for vertical surface of water turbine guide vane |
Non-Patent Citations (1)
| Title |
|---|
| 《湖北水力发电》 20091104 郑振标等 高坝洲电厂水轮机导叶密封安装方法改进 77-78 1-4 , 第4期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065670A (en) * | 2015-07-29 | 2015-11-18 | 平湖阿莱德实业有限公司 | Non-stretch high-precision assembled elastic shielding sealing strip |
| CN105604768A (en) * | 2016-03-16 | 2016-05-25 | 黄河水利委员会黄河水利科学研究院 | Steel-plastic composite polyurethane movable guide vane facade sealing device |
| CN105604768B (en) * | 2016-03-16 | 2018-08-21 | 黄河水利委员会黄河水利科学研究院 | A kind of steel plastic compount polyurethane movable guide vane facade sealing device |
| CN106640480A (en) * | 2017-02-24 | 2017-05-10 | 西华大学 | Water-spraying guide vane capable of improving deviation of optimum operating condition of water turbine |
| CN113521823A (en) * | 2020-04-17 | 2021-10-22 | 美卓奥图泰芬兰有限公司 | Sealing strip, filter frame subassembly and filtration equipment |
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Application publication date: 20100804 |