CN2851369Y - Differential surge tank for controlling lower throttle valve in well by using water level of boosting pipe - Google Patents
Differential surge tank for controlling lower throttle valve in well by using water level of boosting pipe Download PDFInfo
- Publication number
- CN2851369Y CN2851369Y CN 200520132549 CN200520132549U CN2851369Y CN 2851369 Y CN2851369 Y CN 2851369Y CN 200520132549 CN200520132549 CN 200520132549 CN 200520132549 U CN200520132549 U CN 200520132549U CN 2851369 Y CN2851369 Y CN 2851369Y
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- CN
- China
- Prior art keywords
- water level
- surge tank
- valve
- differential
- surge
- 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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Abstract
The utility model belongs to a differential surge tank of a pressure regulating device in the water delivering system of a hydropower station, which uses the water level of boosting pipes to control an excess flow valve at the lower part of a well. The differential surge tank is composed of a boosting pipe and a main wall which are partitioned by a partition wall. The bottom of the surge tank is communicated with a tunnel through a tunnel portal. A communicating opening is arranged at the bottom of the surge tank and is on the same plane as the tunnel portal. The valve of a buoyancy pontoon is arranged at the communicating opening position. Therefore, in the process of downward surge, even the water level in the boosting pipe is lower then the water level in the main well, the buoyancy pontoon can not immediately be opened because of the floating force of the buoyancy pontoon. Only when the water level in the boosting pipe is very near to the buoyancy pontoon position or lower than the buoyancy pontoon position, the valve can be opened. The operating mode is the ideal operating mode of the differential surge tank. The differential surge tank eliminates or reduces surge pressure and fluctuation phenomenon in pressure water delivering systems and enhances the stability and the regulating quality of rotary speed regulation for hydraulic turbines in hydropower stations.
Description
Technical field
The utility model belongs to the regulator in the water-carriage system of power station, be particularly related to press and be used in the water-carriage system eliminating or reduce surge pressure and the existing picture of pulsation, the stabilization of speed that improves the hydraulic turbine in the power station is regulated and a kind of utilization of regulation quality is boosted manages the differential type surge shaft that water level comes control well bottom excess flow valve.
Background technology
Surge shaft is that the power station is used for elimination or reduces surge pressure and the existing picture of pulsing, the rotational speed regulation stability of the hydraulic turbine and a kind of important control device of regulation quality in the raising power station with having in the water-carriage system of pressure.Surge shaft can be as big as the surge shaft that is divided into simple surge shaft, impedance type (throttle type) surge shaft, has the upsurge chamber according to its structural different characteristics, it is several to have surge shaft two cell-type surge shafts, differential type (differential pressure type) surge shaft, air-cushion type surge shaft and a pressure regulation inclined shaft of reading aloud unrestrained chamber down.
Wherein the differential type surge shaft is a kind of surge shaft that is suitable for medium head hydropower station.The differential type surge shaft utilizes its pipe 1 quick boosting in water surface upsurge process that boosts, can be effectively to connecting piece (tunnel) road junction 3 and connected entrance 4 flow to the water that comes play " braking " thus act on and reduce top surge level (as shown in Figure 1) in the main shaft 2 effectively.Though the anti-upsurge characteristic of differential type surge shaft is outstanding, the anti-characteristic of surging down of common differential pressure type surge shaft but is the poorest.The water body of pipe in 1 that boost be easy under surge inhaled in the process empty.Make the application of differential surge shaft be very limited.One of way that addresses this problem is to use one way valve 5 at bottom connected entrance 4 places of the pipe 1 that boosts, under surge in the process, when the water level of pipe in 1 that boost is lower than water level in the main shaft 2, one way valve 5 is opened, slowed down the decline of pipe 1 water level that boosts, making the pipe 1 that boosts be not easy to be inhaled empty (as shown in Figure 2), though the differential pressure surge shaft of what valve of bottom band list can reduce the pipe middle water level decline process of boosting inhaled empty may, the benefit that the quick decline of the pipe water surface of boosting is brought has also been removed.The pipe water level is done quick decline and can be played " braking " effect to the outflow process in pipe (tunnel) road because boost.Can keep the pipe water surface in the process of surging down that boosts of differential type surge shaft to descend fast so and don't be inhaled empty device so is exactly the purpose of the application's patent.
Summary of the invention
The purpose of this utility model provides a kind of utilization pipe water level that boosts and comes the differential type surge shaft of control well bottom excess flow valve, described differential type surge shaft is divided into boost pipe 1 and main shaft 2 by partition wall, connected entrance 4 is arranged in the partition wall bottom or one way valve 5 is installed, communicate by tunnel face 3 and tunnel at the bottom of the surge shaft, it is characterized in that: float chamber 7 is set in the partition wall bottom, connected entrance 4 is located at surge shaft bottom, with tunnel face 3 at grade, the valve of floating drum valve 6 is installed in connected entrance 4 places.
The beneficial effects of the utility model be under surge in the process, because the buoyancy of floating drum, can allow boost in the pipe water level under surge and descend fast in the process, can when the pipe that boosts is blotted soon, in time open the lower buoy valve again, stop water level further to descend fast.
Description of drawings
Fig. 1 is common differential pressure type surge shaft schematic diagram.
Fig. 2 is the differential pressure type surge shaft schematic diagram of bottom band one way valve.
Fig. 3 is the differential type surge shaft structural representation of one of the utility model implementation.
Specific implementation
The utility model provides a kind of utilization to boost and manages the differential type surge shaft that water level comes control well bottom excess flow valve.In differential type surge shaft structural representation shown in Figure 3, the differential type surge shaft is divided into boost pipe 1 and main shaft 2 by partition wall, connected entrance 4 is arranged in the partition wall bottom or one way valve 5 is installed, communicate by tunnel face 3 and tunnel at the bottom of the surge shaft, in the partition wall bottom float chamber 7 is set, connected entrance 4 is located at surge shaft bottom, with tunnel face 3 at grade, the valve of floating drum valve 6 is installed in connected entrance 4 places.Therefore, under surge in the process because the buoyancy of floating drum, both having made pipe 1 middle water level of boosting be lower than water level in the main shaft 2, floating drum valve 6 valves can not opened at once yet.Have only when pipe 1 middle water level of boosting very near (because valve itself be subjected to certain malleation opening force) or when being lower than the floating drum position, valve just can be opened, this is the working method of optimal differential pressure type surge shaft.This patent is not limited to protect specific implementation shown in Figure 3, and all sort out and classifys therewith scheme together all belongs to the present patent application protection domain.
Claims (1)
1. a utilization is boosted and is managed the differential type surge shaft that water level comes control well bottom excess flow valve, described differential type surge shaft is divided into boost pipe (1) and main shaft (2) by partition wall, connected entrance (4) is arranged in the partition wall bottom or one way valve (5) is installed, communicate by tunnel face (3) and tunnel at the bottom of the surge shaft, it is characterized in that: float chamber (7) is set in the partition wall bottom, connected entrance (4) is located at the surge shaft bottom, and the valve of floating drum valve (6) is installed in connected entrance (4) and locates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520132549 CN2851369Y (en) | 2005-11-11 | 2005-11-11 | Differential surge tank for controlling lower throttle valve in well by using water level of boosting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520132549 CN2851369Y (en) | 2005-11-11 | 2005-11-11 | Differential surge tank for controlling lower throttle valve in well by using water level of boosting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2851369Y true CN2851369Y (en) | 2006-12-27 |
Family
ID=37585324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520132549 Expired - Fee Related CN2851369Y (en) | 2005-11-11 | 2005-11-11 | Differential surge tank for controlling lower throttle valve in well by using water level of boosting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2851369Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349064B (en) * | 2008-08-26 | 2010-04-07 | 中国水利水电第五工程局 | Construction method of hydroelectric power station surge chamber vertical shaft under soft rock geological condition |
-
2005
- 2005-11-11 CN CN 200520132549 patent/CN2851369Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349064B (en) * | 2008-08-26 | 2010-04-07 | 中国水利水电第五工程局 | Construction method of hydroelectric power station surge chamber vertical shaft under soft rock geological condition |
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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: 20061227 Termination date: 20091211 |