CN205383033U - Cylindrical valve axial flow turbine - Google Patents
Cylindrical valve axial flow turbine Download PDFInfo
- Publication number
- CN205383033U CN205383033U CN201620153546.5U CN201620153546U CN205383033U CN 205383033 U CN205383033 U CN 205383033U CN 201620153546 U CN201620153546 U CN 201620153546U CN 205383033 U CN205383033 U CN 205383033U
- Authority
- CN
- China
- Prior art keywords
- runner
- axial flow
- rubber tile
- guide
- shaft bearing
- 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 cylindrical valve axial flow turbine, including tail water cone pipe, let out water cone, runner, chamber for runner, inhalant canal, valve cartridge, guiding axle, support lid, down the main shaft, protect axle sleeve, guiding bearing seat, rubber tile, guide bush, direction axle bed, guide bush clamp plate and top cap, the lower part mechanical connection of lower main shaft the runner, the runner sets up inside the chamber for runner, the lower part mechanical connection of chamber for runner tail water cone pipe, the lower part mechanical connection of runner let out water cone, it sets up to let out water cone the inside of tail water cone pipe, the utility model discloses a single fixed knot constructs section of thick bamboo valve and replaces prototype axial flow turbine movable guide vane structural adjustment flow, has avoidd the many and easy shortcoming of decreasing of movable spare part effectively, prolongs unit life greatly, improves the unit availability ratio.
Description
Technical field
This utility model belongs to hydraulic turbine field, is specifically related to a kind of cylindrical valve axial flow hydraulic turbine.
Background technology
Hydrogenerator refers to the electromotor that water can be converted into electric energy with the hydraulic turbine for prime mover.Water, through the hydraulic turbine, can be converted to mechanical energy by current, the rotor of the rotating shaft of hydraulic turbine drive electrical generators again, converts mechanical energy into electric energy and exports, and is the main dynamics equipment of power station production electric energy.
The hydraulic turbine can be divided into impulse turbine and the big class of reaction turbine two by operation principle.The runner turbine characteristics of impulse turbine compares the impact being subject to current and rotates, and in work process, the pressure of current is constant, mainly the conversion of kinetic energy；The runner of reaction turbine is subject to the counteracting force of current in water and rotates, and in work process, the pressure of current all can change with kinetic energy, but is mainly the conversion of pressure energy.
Reaction turbine can be divided into mixed-flow, axial-flow type, diagonal flow type and tubular.In Francis turbine, current, radially into water distributor, axially flow out runner；In axial flow hydraulic turbine, current radially into stator, axially into flow out runner；In inclined flow turbine, radially into stator, direction to favour a certain angle of main shaft flows to runner to current, or the direction to favour main shaft flows to stator and runner；In tubular turbine, current flow to stator and runner vertically.Axial-flow type, tubular and inclined flow turbine also can be divided into by its structure determines paddle and rotary propeller type.The runner bucket determining paddle is fixing；The runner bucket of rotary propeller type can be in operation and rotate around sharf, to adapt to the change of head and load.
Various types of reaction turbines are designed with water feed apparatus, and the water feed apparatus of large and medium-sized vertical shaft reaction turbine is generally made up of spiral case, fixed guide vane and movable guide vane.The effect of spiral case is that uniform fluid flow is distributed to around runner.When head is below 40 meters, the spiral case Common Steels reinforced concrete cast on-site of the hydraulic turbine forms；When head is higher than 40 meters, then frequently with the metal spiral case of welding or block cast.In reaction turbine, current are full of whole runner channel, and whole blades are subject to the effect of current simultaneously, so under same head, runner diameter is less than impulse turbine.Their peak efficiency is also above impulse turbine, but when load variations, the efficiency of the hydraulic turbine is influenced to different extents.Reaction turbine is designed with draft tube, and its effect is: reclaim the kinetic energy of outlet of rotary wheel place current；Current discharged to downstream；When the installation site of runner is higher than the level of tail water, this potential energy is converted into pressure can be reclaimed.For the hydraulic turbine of the big flow of low water head, the outlet kinetic energy of runner is relatively large, and the efficiency of the hydraulic turbine is had appreciable impact by the recyclability of draft tube.
Kaplan turbine runner is made up of web, blade, draft cone, and the number of blade is less than mixed-flow, and axis of runner blade is vertical with hydraulic turbine axis.Power station suitable in middle low water head, big flow.Under identical head, its specific speed relatively Francis turbine is high, and current are become axial flowing from Radial Flow between stator and runner, and in runner district, current keep axially flowing；There is the shortcomings such as water distributor (movable guide vane) is easy to wear, water leakage big, install complexity, the time between overhaul cycle is short in axial flow hydraulic turbine common at present.
Utility model content
The purpose of this utility model is to provide a kind of novel structure, the cylindrical valve axial flow hydraulic turbine of practical function.
Technical scheme provided by the utility model is: a kind of cylindrical valve axial flow hydraulic turbine, including draft tube cone, draft cone, runner, runner envelope, intake tunnel, valve cylinder, the axis of guide, support lid, lower main axis, protective shaft sleeve, guide shaft bearing, rubber tile, guideway, guiding axle bed, guideway pressing plate and top cover, the lower mechanical of described lower main axis connects described runner, described runner is arranged on inside described runner envelope, the lower mechanical of described runner envelope connects described draft tube cone, the lower mechanical of described runner connects described draft cone, described draft cone is arranged on the inside of described draft tube cone；The middle part of described lower main axis is cased with described protective shaft sleeve, described protective shaft sleeve outer cover has described rubber tile, the outside of described rubber tile is provided with described guide shaft bearing, described guide shaft bearing is fixing connects described support lid, the described support portion of covering is mechanically connected described top cover, and described support lid bottom surrounds described lower main axis；The top of described lower main axis is through described top cover, and described intake tunnel is positioned at the top of described runner envelope, and described intake tunnel is surrounded by the upper end of described top cover, support lid and described runner envelope and forms；Described valve cylinder is enclosed in the outside of described runner envelope, is provided with the described axis of guide on the top of described valve cylinder, and the described axis of guide is provided with described guiding axle bed through the position of described top cover, is provided with described guideway between described guiding axle bed and the described axis of guide.
As a kind of improvement of the present utility model, described top cover is provided with suspension ring.
As a kind of improvement of the present utility model, the lower end of described cylindrical valve axial flow hydraulic turbine is provided with foundation bolt.
As a kind of improvement of the present utility model, described guide shaft bearing is linked into an integrated entity by bolt and alignment pin by two bearing antimere, said two bearing antimere is identical with the centrage of main shaft, it is provided with recess inside described guide shaft bearing, described rubber tile is fixed on inside described guide shaft bearing, match with described guide shaft bearing, described rubber tile is made up of two symmetrical half-round, described rubber tile outer surface is provided with protuberance, described protuberance and described recess size match, and described rubber tile inner homogeneous arranges some arcuate grooves.
In use, the valve cylinder of the hydraulic turbine passes through axis of guide adjusting position, promotes the space place that valve cylinder is formed with runner envelope upper end to top cover, it is possible to block hydroturbine water intake passage, be now in closed position；Lower pressure valve cylinder is to surrounding runner envelope completely so that the intake tunnel on top fully opens, and is now in open position；After intake tunnel is opened, current from top to bottom drive runner；Cylindrical valve is introduced in starting and the shutdown procedure of unit by manual and electric control system, and when properly functioning, cylindrical valve turns off after water distributor cut out, compressor emergency shutdown；When opening, cylindrical valve is opened before water distributor is opened.
Beneficial effect:
1, hydraulic turbine operation regulates mainly by regulating unit water flow, single fixed structure cylinder valve is adopted to replace prototype shaft flow water turbine movable guide vane structure to regulate flow, effectively evade that moving parts is many and the shortcoming of rapid wear, be greatly prolonged unit service life, improve unit availability.
2, when hydraulic turbine operation, cylinder valve is fully out runner, cylinder valve sealing means and the geometry of valve bottom side on base ring are designed to smooth water passage, it is possible to avoiding causing the loss of flood peak or cavitation erosion, turbine efficiency does not affect because of mounting cylinder valve.
3, barrel valve is installed directly between spiral case and fixed guide vane, compact conformation, does not need specific placement position or auxiliary plant.
4, easy for installation.Barrel valve and main frame are installed simultaneously, separately do not set special lifting appliance.
5, simple in construction, easily manufactured, lightweight, production cost can reduce about 20%.
6, even with conventional cylinder valve, after cylinder valve cuts out, also can hydraulic turbine easily worn part being overhauled, it have to take the chance of top cover apart and few；For large-scale runner, runner cavitation corrosion position can be processed in machine is cheated, be not required to hang clipping room and go.
7, by rubber tile and guide shaft bearing are divided into two independent parts, only need to change rubber tile after abrasion, retain guide shaft bearing, economize on resources and cost, easy accessibility.
Accompanying drawing explanation
Fig. 1 is this utility model cylindrical valve axial flow hydraulic turbine structural representation.
In figure, 1 is draft tube cone, and 2 is draft cone, and 3 is foundation bolt, 6 is runner, 71 is runner envelope, 72 for intake tunnel, and 8 is valve cylinder, 17 is the axis of guide, and 18 for supporting lid, and 19 is lower main axis, 20 is protective shaft sleeve, and 21 is guide shaft bearing, and 22 is rubber tile, 26 is guideway, and 27 is guiding axle bed, and 32 is suspension ring, 55 is guideway pressing plate, and 56 is top cover.
Fig. 2 is the structural representation of the rubber tile used in this utility model embodiment.
In figure, 22 is rubber tile, and 221 is arcuate groove, and 222 is protuberance.
Detailed description of the invention
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, cylindrical valve axial flow hydraulic turbine in the present embodiment, including draft tube cone 1, draft cone 2, runner 6, runner envelope 71, intake tunnel 72, valve cylinder 8, the axis of guide 17, support lid 18, lower main axis 19, protective shaft sleeve 20, guide shaft bearing 21, rubber tile 22, guideway 26, guiding axle bed 27, guideway pressing plate 55 and top cover 56, the lower mechanical of described lower main axis 19 connects described runner 6, it is internal that described runner 6 is arranged on described runner envelope 71, the lower mechanical of described runner envelope 71 connects described draft tube cone 1, the lower mechanical of described runner 6 connects described draft cone 2, described draft cone 2 is arranged on the inside of described draft tube cone 1；The middle part of described lower main axis 19 is cased with described protective shaft sleeve 20, described protective shaft sleeve 20 outer cover has described rubber tile 22, the outside of described rubber tile 22 is provided with described guide shaft bearing 21, described guide shaft bearing 21 is fixing connects described support lid 18, described lid 18 top that supports is mechanically connected described top cover 56, and described lid 18 bottom that supports surrounds described lower main axis 19；The top of described lower main axis 19 is through described top cover 56, and described intake tunnel 72 is positioned at the top of described runner envelope 71, and described intake tunnel 72 is surrounded by the upper end of described top cover 56, support lid 18 and described runner envelope 71 and forms；Described valve cylinder 8 is enclosed in the outside of described runner envelope 71, the top of described valve cylinder 8 is provided with the described axis of guide 17, the described axis of guide 17 is provided with described guiding axle bed 27 through the position of described top cover 56, described guideway 26 it is provided with between described guiding axle bed 27 and the described axis of guide 17, described top cover 56 is provided with suspension ring 32, the lower end of described cylindrical valve axial flow hydraulic turbine is provided with foundation bolt 3；As shown in Figure 2, described guide shaft bearing 21 is linked into an integrated entity by bolt and alignment pin by two bearing antimere, said two bearing antimere is identical with the centrage of main shaft, described guide shaft bearing 21 is internal is provided with recess, described rubber tile is fixed on inside described guide shaft bearing, match with described guide shaft bearing, described rubber tile 22 is made up of two symmetrical half-round, described rubber tile outer surface is provided with protuberance 222, described protuberance 222 matches with described recess size, and described rubber tile inner homogeneous arranges some arcuate grooves 221.
This utility model is not limited to above-mentioned detailed description of the invention, and those skilled in the art also can make multiple change accordingly, but any change equivalent or similar with this utility model all should be encompassed in this utility model scope of the claims.
Claims (4)
- null1. a cylindrical valve axial flow hydraulic turbine，It is characterized in that，Including draft tube cone (1)、Draft cone (2)、Runner (6)、Runner envelope (71)、Intake tunnel (72)、Valve cylinder (8)、The axis of guide (17)、Support lid (18)、Lower main axis (19)、Protective shaft sleeve (20)、Guide shaft bearing (21)、Rubber tile (22)、Guideway (26)、Guiding axle bed (27)、Guideway pressing plate (55) and top cover (56)，The lower mechanical of described lower main axis (19) connects described runner (6)，It is internal that described runner (6) is arranged on described runner envelope (71)，The lower mechanical of described runner envelope (71) connects described draft tube cone (1)，The lower mechanical of described runner (6) connects described draft cone (2)，Described draft cone (2) is arranged on the inside of described draft tube cone (1)；The middle part of described lower main axis (19) is cased with described protective shaft sleeve (20), described protective shaft sleeve (20) outer cover has described rubber tile (22), the outside of described rubber tile (22) is provided with described guide shaft bearing (21), described guide shaft bearing (21) is fixing connects described support lid (18), described lid (18) top that supports is mechanically connected described top cover (56), and described lid (18) bottom that supports surrounds described lower main axis (19)；The top described top cover of traverse (56) of described lower main axis (19), described intake tunnel (72) is positioned at the top of described runner envelope (71), and described intake tunnel (72) is surrounded by the upper end of described top cover (56), support lid (18) and described runner envelope (71) and forms；Described valve cylinder (8) is enclosed in the outside of described runner envelope (71), the top of described valve cylinder (8) is provided with the described axis of guide (17), the described axis of guide (17) is provided with described guiding axle bed (27) through the position of described top cover (56), is provided with described guideway (26) between described guiding axle bed (27) and the described axis of guide (17).
- 2. cylindrical valve axial flow hydraulic turbine as claimed in claim 1, it is characterised in that be provided with suspension ring (32) on described top cover (56).
- 3. cylindrical valve axial flow hydraulic turbine as claimed in claim 1, it is characterised in that the lower end of described cylindrical valve axial flow hydraulic turbine is provided with foundation bolt (3).
- 4. cylindrical valve axial flow hydraulic turbine as claimed in claim 1, it is characterized in that, described guide shaft bearing (21) is linked into an integrated entity by bolt and alignment pin by two bearing antimere, said two bearing antimere is identical with the centrage of main shaft, described guide shaft bearing (21) is internal is provided with recess, described rubber tile is fixed on inside described guide shaft bearing, match with described guide shaft bearing, described rubber tile (22) is made up of two symmetrical half-round, described rubber tile outer surface is provided with protuberance (222), described protuberance (222) and described recess size match, described rubber tile inner homogeneous arranges some arcuate grooves (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620153546.5U CN205383033U (en) | 2016-03-01 | 2016-03-01 | Cylindrical valve axial flow turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620153546.5U CN205383033U (en) | 2016-03-01 | 2016-03-01 | Cylindrical valve axial flow turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205383033U true CN205383033U (en) | 2016-07-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620153546.5U Expired - Fee Related CN205383033U (en) | 2016-03-01 | 2016-03-01 | Cylindrical valve axial flow turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205383033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971805A (en) * | 2016-06-21 | 2016-09-28 | 中国水利水电科学研究院 | Integrated francis type water turbine-generator unit for regulating flow through cylindrical valve |
-
2016
- 2016-03-01 CN CN201620153546.5U patent/CN205383033U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971805A (en) * | 2016-06-21 | 2016-09-28 | 中国水利水电科学研究院 | Integrated francis type water turbine-generator unit for regulating flow through cylindrical valve |
| CN105971805B (en) * | 2016-06-21 | 2018-05-29 | 中国水利水电科学研究院 | A kind of self-contained Francis hydroturbine generator set using tubular valve regulating flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20180301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |