CN201747506U - Water inlet butterfly valve of shroud ring-type body ring hydraulic turbine - Google Patents
Water inlet butterfly valve of shroud ring-type body ring hydraulic turbine Download PDFInfo
- Publication number
- CN201747506U CN201747506U CN2010202981038U CN201020298103U CN201747506U CN 201747506 U CN201747506 U CN 201747506U CN 2010202981038 U CN2010202981038 U CN 2010202981038U CN 201020298103 U CN201020298103 U CN 201020298103U CN 201747506 U CN201747506 U CN 201747506U
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- CN
- China
- Prior art keywords
- valve
- valve body
- butterfly
- ring
- overhaul
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
Abstract
The utility model discloses a water inlet butterfly valve of a shroud ring-type body ring hydraulic turbine, which relates to the field of butterfly valves; a valve shaft is connected with a double-flat butterfly plate through a valve body; an operation mechanism is connected with the valve shaft outside the valve body; an overhaul sealing pair and a working sealing pair are respectively arranged on the water inlet end and the water outlet end of the valve body; the overhaul sealing ring of the overhaul sealing pair is an air shroud ring and is arranged on the valve body; and the butterfly plate overhaul sealing ring is arranged on the double-flat butterfly plate. The water inlet butterfly valve of the shroud ring-type body ring hydraulic turbine drives the double-flat butterfly plate to rotate in a range of 0 to 90 degrees with the operation mechanism so as to achieve the purposes of connecting or disconnecting a medium; when in overhaul, the air shroud ring is fed with compressed air and expands and produces sufficient seal ratio pressure for the overhaul, and the air only needs to be exhausted when the overhaul is over.
Description
Technical field
The utility model relates to butterfly valve, particularly relates to the hydroturbine water intake double seals butterfly valve.
Background technique
On the penstock during the hydroturbine water intake double seals butterfly valve is installed in, before the low head hydropower station spiral case water inlet transition section, it mainly acts on and is:
(1) when water turbine breaks down, be used for blocking current, guarantee unit safety.When water turbine is shut down, close the maintenance that inlet valve is beneficial to water turbine, and do not influence the normal operation of other unit.It is particularly suitable for supplying water to several units as a water delivery house steward, when wherein a unit need overhaul, in order to blocking current, thereby does not influence the normal operation of other unit.
(2) break down when the water turbine governing system, generating unit speed is elevated under the situation of setting valve, and moving water promptly closes valve, blocks current, guarantees unit safety, and the accident that prevents enlarges.
(3) when the water turbine Long-time Shut-down, block upland water, to reduce that stator leaks and to damage because of the stator gap cavitation erosion that causes of leaking.Also can avoid after the unit long-time running when starting shooting again, also can shortening the required time of unit because of the stator water leakage increases the problem that can not shut down.
Portable piston type sealing configuration is generally adopted in the maintenance sealing of existing hydroturbine water intake double seals butterfly valve, is the motion sealing configuration, and its stroke is longer.Because what the sealing of self was adopted is ' 0 ' shape rubber seal, it is to process equipment and requirement on machining accuracy height, surface of contact was inhomogeneous about the weight of piston also can cause simultaneously, it easily causes and leaks and the motion jam, could overhaul after it must being discarded or takes apart, safeguard quite difficulty and trouble.
Summary of the invention
The purpose of this utility model is at above-mentioned technical deficiency, proposes a kind of Shround-band type body circle hydroturbine water intake double seals butterfly valve, and it is a kind of rational in infrastructure, easy butterfly valve of maintenance.
The technical solution of the utility model realizes in such a way:
The utility model includes valve body, two dull and stereotyped butterfly plate, valve shaft, operating device, maintenance sealing pair, working seal pair, valve shaft is connected by valve body and with two dull and stereotyped butterfly plates, operating device is arranged on the outside of valve body, be connected on the outer valve shaft of valve body, the maintenance sealing pair is arranged on the feed-water end of valve body, and the working seal pair is arranged on the waterexit end of valve body; The valve body maintenance seal ring of described maintenance sealing pair is an air shroud, and butterfly plate maintenance seal ring is arranged on two dull and stereotyped butterfly plates.
Its maintenance seal ring is that air shroud is connected on the valve body by fastening screw trip bolt by gland,
Advantage of the present utility model is as follows:
1, the utility model is simple and reasonable;
2, the utility model overhauls easily, and it only needs to the maintenance seal ring is that air shroud conveying air is the maintenance of can regulate seal pressure.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model side view;
Structural representation when Fig. 3 devotes oneself to work for the utility model;
Structural representation when Fig. 4 is the utility model releasing work.
Embodiment
Referring to accompanying drawing embodiment, the utility model is described in further detail.
Among Fig. 1-4: two dull and stereotyped butterfly plates 2 are connected on the valve shaft 3, operating device 4 is in the outside of valve body 1, operating device 4 is connected with the valve shaft 3 of valve body 1 outside, maintenance sealing pair 5 is at the feed-water end of valve body 1, working seal pair 5 is in the waterexit end of valve body 1, the valve body maintenance seal ring of its maintenance sealing pair 5 is an air shroud 9, is fixed on the valve body 1 by fastening screw trip bolt 11 by gland 10, and butterfly plate maintenance seal ring 12 is installed on two dull and stereotyped butterfly plates 2.
During valve opening and closing, drive valve shaft 3 by operating device 4 and in 90 ° of scopes, rotate, reach the purpose of blocking or being communicated with medium with two dull and stereotyped butterfly plates 2.
During maintenance, enter valve body maintenance seal ring 9 by power station compressed air system pressurized air, shroud expands, and contacts with butterfly plate maintenance seal ring 12 on two dull and stereotyped butterfly plates 2, seals peripheral clearance, produces enough seal pressures, can overhaul.It is many or carry out pressure regulation less that its seal pressure can enter pressurized air in the valve seals 9 according to pressurized air, to guarantee excellent sealing performance.
When maintenance sealing pair 5 needed to remove, the gas in the seal ring 9 was repaiied in first drain health check-up, and the air shroud withdrawal makes to be installed in valve body 1 and to break away from fully with sealing surface on two dull and stereotyped butterfly plates 2, can open normally or throttle down.
Claims (2)
1. Shround-band type body circle hydroturbine water intake double seals butterfly valve that relates to butterfly valve, include valve body (1), two dull and stereotyped butterfly plates (2), valve shaft (3), operating device (4), maintenance sealing pair (5), working seal pair (6), valve shaft (3) is connected by valve body (1) and with two dull and stereotyped butterfly plates (2), operating device (4) is connected on the outer valve shaft (3) of valve body (1), maintenance sealing pair (5) is at the feed-water end of valve body (1), working seal pair (6) is in the waterexit end of valve body (1), it is characterized in that: the valve body maintenance seal ring of maintenance sealing pair (5) is air shroud (9), be connected on the valve body (1) by fastening screw trip bolt (11) by pressure reduction (10), butterfly plate maintenance seal ring (12) is on two dull and stereotyped butterfly plates (2).
2. Shround-band type body circle hydroturbine water intake double seals butterfly valve according to claim 1, it is characterized in that: air shroud (9) is connected on the valve body (1) by fastening screw trip bolt (11) by gland (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202981038U CN201747506U (en) | 2010-08-12 | 2010-08-12 | Water inlet butterfly valve of shroud ring-type body ring hydraulic turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202981038U CN201747506U (en) | 2010-08-12 | 2010-08-12 | Water inlet butterfly valve of shroud ring-type body ring hydraulic turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747506U true CN201747506U (en) | 2011-02-16 |
Family
ID=43582185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202981038U Expired - Fee Related CN201747506U (en) | 2010-08-12 | 2010-08-12 | Water inlet butterfly valve of shroud ring-type body ring hydraulic turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747506U (en) |
-
2010
- 2010-08-12 CN CN2010202981038U patent/CN201747506U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20130812 |