CN102364170B - Draft tube disk-shaped valve for overhauling large and medium-sized water turbine generator unit - Google Patents
Draft tube disk-shaped valve for overhauling large and medium-sized water turbine generator unit Download PDFInfo
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- CN102364170B CN102364170B CN2011101806967A CN201110180696A CN102364170B CN 102364170 B CN102364170 B CN 102364170B CN 2011101806967 A CN2011101806967 A CN 2011101806967A CN 201110180696 A CN201110180696 A CN 201110180696A CN 102364170 B CN102364170 B CN 102364170B
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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 invention relates to a draft tube disk-shaped valve for overhauling a large and medium-sized water turbine generator unit. A valve body sealing seat, a lower support seat and an upper support seat are respectively cast in a concrete seat of a support; a valve body and the valve body sealing seat are in conical sealing pair structures; a lower bearing sealing bracket is fixedly connected with the lower support seat through a bolt bar; an upper bearing sealing bracket is fixedly connected with the upper support seat through a bolt bar; a servomotor bracket is fixedly arranged on the upper support seat; the upper part of the servomotor bracket is connected with a servomotor; a servomotor piston rod is connected with the valve body of the draft tube disk-shaped valve through a valve shaft; a conical contact surface between the valve body and the valve body sealing seat is a metal-to-metal matched surface; and a locking device is arranged at the upper part of the servomotor. The draft tube disk-shaped valve disclosed by the invention is maintenance-free and is free from a special overhaul operation corridor so as to greatly save the cost of civil engineering; and the draft tube disk-shaped valve can be operated by using a movable oil source.
Description
Technical field:
The present invention relates to a kind of big-and-middle-sized Overhauling for Hydraulic Generator Set draft tube dish-type valve.
Background technique
Big-and-middle-sized hydraulic generator unit owing to need regular maintenance, must be drained by the ponding that it is inner between turn(a)round.Common pipe drainage mode not only needs to install the very big drainage pipe of caliber size and bigger control valve, but also must leave the gallery of enough maintenance and operation control valve door, so that the excavation cost that certainly will will increase civil engineering side is done in maintenance like this.
Summary of the invention
The purpose of this invention is to provide a kind of big-and-middle-sized Overhauling for Hydraulic Generator Set draft tube dish-type valve, namely adopt draft tube dish-type valve to guarantee that unit when maintenance, drains into sump with the ponding in the draft tube, when normally moving, draft tube dish-type valve implements to cut out, and guarantees the normal operation of unit.The objective of the invention is to be achieved through the following technical solutions: a kind of big-and-middle-sized Overhauling for Hydraulic Generator Set draft tube dish-type valve, the valve seal seat, valve body, valve shaft, undersetting, upper bracket, servomotor support and servomotor, the lower bearing sealed support, upper bearing (metal) sealed support and locking device constitute draft tube dish-type valve jointly, the valve seal seat, undersetting and upper bracket are installed respectively in the concrete pad that is cast in supporting, valve body and valve seal seat are circular cone sealing pair structure, adopt threaded rotation set to be connected between valve body and the stainless steel valve shaft, the lower bearing sealed support is fixed together closing with undersetting by bolt, the upper bearing (metal) sealed support is fixed together closing with upper bracket by bolt, the servomotor support is fixed on the upper bracket, servomotor support top connects servomotor, the stainless steel valve shaft adopts threaded rotation set to be connected with the piston rod of servomotor, the valve body of the piston rod of servomotor and draft tube dish-type valve joins by valve shaft, the circular cone surface of contact of valve body and valve seal seat is the fitting surface that metal to metal is stainless steel material, and the top of servomotor is equiped with locking device.
The present invention adopts the segmentation valve shaft of adjustable length to link to each other by the servomotor piston rod with the valve body of draft tube dish-type valve, be connected and fixed by threaded rotation set between the segmentation valve shaft, the circular cone surface of contact of valve body and valve seal seat is the fitting surface of metal to metal.The cavity of resorption of servomotor cylinder body feeds pressure oil, and piston rod moves up and opens valve under the effect of oil pressure; The epicoele of servomotor cylinder body feeds pressure oil, and piston rod moves down, when valve body with after the circular cone surface of contact of valve seal seat contacts, make its fitting surface press tighter and tighter.Because the above-mentioned characteristic of draft tube dish-type valve, therefore, it has easy for installation, simple in structure, arrange very compact, and the characteristics of flexible operation.Because can be connected and fixed by threaded rotation set between the segmentation valve shaft, the position of the operating gallery of servomotor can be arranged according to different installation elevations on the draft tube dish-type valve, so its Applicable scope is extensive.Because the sealing of the sealing pair at valve body and valve seal seat place employing metal to metal, can accomplish non-maintainingly, and do not need special inspection operation gallery, save the cost of civil engineering greatly.Though the employing hydraulic operation only needs portable oil sources to operate.
Description of drawings
Fig. 1 is big-and-middle-sized Overhauling for Hydraulic Generator Set draft tube dish-type valve sectional drawing;
Fig. 2 is circular cone sealing pair structural drawing;
Embodiment
The present invention as shown in Figure 1 is a kind of big-and-middle-sized Overhauling for Hydraulic Generator Set draft tube dish-type valve, the valve seal seat, valve body, valve shaft, undersetting, upper bracket, servomotor support and servomotor, the lower bearing sealed support, upper bearing (metal) sealed support and locking device constitute draft tube dish-type valve jointly, valve seal seat 1, undersetting 4 and upper bracket 5 are installed respectively and are cast in the concrete pad of supporting, as shown in Figure 2, valve body 2 is circular cone sealing pair structure with valve seal seat 1, adopt threaded rotation set to be connected between valve body 2 and the valve shaft 3, lower bearing sealed support 8 is fixed together closing with undersetting 4 by bolt, upper bearing (metal) sealed support 9 is fixed together closing with upper bracket 5 by bolt, servomotor support 6 is fixed on the upper bracket 5, valve shaft 3 adopts threaded rotation set to be connected with the piston rod of servomotor 7, servomotor support 6 tops connect servomotor 7, servomotor 7 piston rods join by valve shaft 3 with the valve body 2 of draft tube dish-type valve, valve body 2 is the fitting surface of metal to metal (being stainless steel material) with the circular cone surface of contact of valve seal seat 1, and the top of servomotor 7 is equiped with locking device 10.
As shown in Figure 2, closely compress by the circular cone surface of contact that feeds valve body 2 that pressure oil can operate draft tube dish-type valve and valve seal seat 1 to the servomotor cylinder epicoele of servomotor 7, played the effect of throttle down, be raised by valve body 2 from draft tube dish-type valve to the servomotor cylinder cavity of resorption feeding pressure oil of servomotor 7 that can operate, throw off with the circular cone surface of contact of valve seal seat 1 simultaneously, played the effect of opening valve.Be equiped with locking device 10 when unit normally moves on the top of servomotor 7, locking device drops into, and guarantees the safe operation of unit.After adopting draft tube dish-type valve, because the advantage of its structure, namely all can lay its operation equipment in any elevation position, and do not need special operating gallery to carry out Operation and maintenance, and the circular cone surface of contact of valve body and valve seal seat is fitting surface and the stainless valve shaft of metal to metal (being stainless steel material), all has non-maintaining characteristics.
Claims (1)
1. one kind big-and-middle-sized Overhauling for Hydraulic Generator Set is with draft tube dish-type valve, the valve seal seat, valve body, valve shaft, undersetting, upper bracket, servomotor support and servomotor, the lower bearing sealed support, upper bearing (metal) sealed support and locking device constitute draft tube dish-type valve jointly, it is characterized in that: valve seal seat (1), undersetting (4) and upper bracket (5) are installed respectively and are cast in the concrete pad of supporting, valve body (2) is circular cone sealing pair structure with valve seal seat (1), adopt threaded rotation set to be connected between valve body (2) and the stainless steel valve shaft (3), lower bearing sealed support (8) is fixed together closing with undersetting (4) by bolt, upper bearing (metal) sealed support (9) is fixed together closing with upper bracket (5) by bolt, servomotor support (6) is fixed on the upper bracket (5), servomotor support (6) top connects servomotor (7), stainless steel valve shaft (3) adopts threaded rotation set to be connected with the piston rod of servomotor (7), the valve body (2) of the piston rod of servomotor (7) and draft tube dish-type valve joins by valve shaft (3), valve body (2) is the fitting surface of stainless steel material with the circular cone surface of contact of valve seal seat (1), and the top of servomotor (7) is equiped with locking device (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101806967A CN102364170B (en) | 2011-06-30 | 2011-06-30 | Draft tube disk-shaped valve for overhauling large and medium-sized water turbine generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101806967A CN102364170B (en) | 2011-06-30 | 2011-06-30 | Draft tube disk-shaped valve for overhauling large and medium-sized water turbine generator unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102364170A CN102364170A (en) | 2012-02-29 |
| CN102364170B true CN102364170B (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101806967A Active CN102364170B (en) | 2011-06-30 | 2011-06-30 | Draft tube disk-shaped valve for overhauling large and medium-sized water turbine generator unit |
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| CN (1) | CN102364170B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236539A (en) * | 2018-10-22 | 2019-01-18 | 深圳市恩莱吉能源科技有限公司 | A kind of Kaplan turbine structure that the wheel hub of hydraulic operation is oil-free |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137053Y (en) * | 2007-12-10 | 2008-10-22 | 中国水电顾问集团中南勘测设计研究院 | Hydraulic power plant draft-tube maintenance gate turning plate type locking apparatus |
| CN202195067U (en) * | 2011-06-30 | 2012-04-18 | 哈尔滨电机厂有限责任公司 | Exhaust water pipe disc valve for overhauling of large-medium water turbine power generating unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57134014A (en) * | 1981-02-13 | 1982-08-19 | Toshiba Corp | Underwater bearing |
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2011
- 2011-06-30 CN CN2011101806967A patent/CN102364170B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137053Y (en) * | 2007-12-10 | 2008-10-22 | 中国水电顾问集团中南勘测设计研究院 | Hydraulic power plant draft-tube maintenance gate turning plate type locking apparatus |
| CN202195067U (en) * | 2011-06-30 | 2012-04-18 | 哈尔滨电机厂有限责任公司 | Exhaust water pipe disc valve for overhauling of large-medium water turbine power generating unit |
Non-Patent Citations (3)
| Title |
|---|
| JP昭57-134014AA 1982.08.19 |
| 常喜兵.黑麋峰抽水蓄能电站水泵水轮机结构设计.《东方电机》.2010,(第4期),全文. |
| 黑麋峰抽水蓄能电站水泵水轮机结构设计;常喜兵;《东方电机》;20100831(第4期);全文 * |
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| CN102364170A (en) | 2012-02-29 |
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