CN201786534U - Water guide device of water turbine - Google Patents
Water guide device of water turbine Download PDFInfo
- Publication number
- CN201786534U CN201786534U CN2010205152277U CN201020515227U CN201786534U CN 201786534 U CN201786534 U CN 201786534U CN 2010205152277 U CN2010205152277 U CN 2010205152277U CN 201020515227 U CN201020515227 U CN 201020515227U CN 201786534 U CN201786534 U CN 201786534U
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- China
- Prior art keywords
- water
- needle
- nozzle
- turbine
- water turbine
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- 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
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- Hydraulic Turbines (AREA)
Abstract
The utility model discloses a water guide device of a water turbine, which comprises a connecting frame, a water inlet elbow, a spray pipe, a spray nozzle head and a spray nozzle port, wherein water inlet end of the spray pipe is connected with the water inlet elbow, the spray nozzle head and the spray nozzle port are arranged on the spray pipe, and the spray pipe and the water inlet elbow are installed on the connecting frame. The water guide device of the water turbine additionally comprises a needle servomotor, a needle and a needle bar. The needle is installed on the needle bar and can move forward and backward under the control of the needle servomotor to change the flow area and to adjust the diameter of jet water columns. The water guide device of the water turbine has the advantages that the structure is simple, the water guide device is convenient to use, the diameter of the jet water columns can be adjusted to satisfy the need of load adjustment, the needle can seal up water and can have the interception function of a valve when the needle is in contact with the spray nozzle port, i.e. when the needle is at a full-closed position, and the cavitation resistance and the sand wear resistance are high because the head of the needle and the spray nozzle port are forged by 2Cr13 stainless steel.
Description
Technical field
The utility model relates to a kind of water turbine water guider, belongs to the hydro-electric power generating equipment technical field.
Background technique
Water turbine is to be the transformation of energy of current the dynamic power machine of rotating mechanical energy.Modern water turbine great majority are installed in the water power plant, are used for driving generator for electricity generation.In the water power plant, the water in the upper pond is guided water turbine into through aqueduct, promotes the rotary wheel of water turbine rotation, drives generator for electricity generation.The water of finishing merit then passes through the tail water row of conduits downstream.Head is high more, flow is big more, and the output power of water turbine is also just big more.Reaction turbine is a kind of of water turbine, and it has obtained all over the world using widely with the energy conversion efficiency height.Various types of reaction turbines all are provided with water feed apparatus, and the water feed apparatus of large and medium-sized vertical shaft reaction turbine generally is made up of spiral case, fixed guide vane and movable guide vane.The effect of spiral case is that current are evenly distributed to around the runner.When head below 40 meters the time, the spiral case of water turbine reinforced concrete cast on-site commonly used forms; When head is higher than 40 meters, the then normal metal spiral case that adopts welding or block cast.
In reaction turbine, current are full of whole runner channel, and all blade is subjected to the effect of current simultaneously, so under same head, runner diameter is less than impulse turbine.Their peak efficiency also is higher than impulse turbine, but when load variations, the efficient of water turbine is subjected to influence in various degree.Reaction turbine all is provided with draft tube, and its effect is: the kinetic energy that reclaims outlet of rotary wheel place current; Current row downstream; When the mounting point of runner was higher than the level of tail water, this potential energy is converted into pressure can be reclaimed.For the water turbine of the big flow of low water head, the outlet kinetic energy of runner is relatively large, and the recyclability of draft tube has appreciable impact to the efficient of water turbine.Usually the water column that sprays to turbine blade by water guider can not be regulated, and that has so also just caused whole process cannot be controlled.
The model utility content
It is a kind of simple in structure, easy to use that the utility model purpose is to provide, and can control the water turbine water guider of injection water size.
The technical solution of the utility model is:
A kind of water turbine water guider, comprise link press span, water inlet bend pipe, jet pipe, nozzle tip and nozzle, described jet pipe feed-water end connection water inlet bend pipe, described nozzle tip and nozzle are positioned on the jet pipe, on described jet pipe and installation of water inlet bend pipe and the link press span, it is characterized in that, described water turbine water guider also comprises nozzle needle servomotor, nozzle needle and needle stem, and described nozzle needle is contained on the needle stem, can move forward and backward under the manipulation of nozzle needle servomotor, change flow area, regulate the jetting column diameter.
Preferably, described nozzle needle, nozzle tip and nozzle have smooth, accurate geometrical shape water passage surface.
Preferably, streamlined water guide leaf grating is equipped with at described nozzle entrance place.
Preferably, on the described water inlet bend pipe pressure gauge is housed.
Preferably, described water turbine water guider also comprises the speed regulator that can control the nozzle needle opening and closing time, and described speed regulator links to each other with the nozzle needle servomotor.
Preferably, described nozzle needle head and nozzle are by the forging of 2Cr13 stainless steel.
The utility model has the advantages that:
1, because nozzle needle, nozzle tip and nozzle have accurate geometrical shape and smooth water passage surface, near adding nozzle entrance very long streamlined water guide leaf grating is housed, eliminate the influence of bend pipe to current, the jetting post remains on more than 94% its hydraulic efficiency thereby can form closely;
2, nozzle needle is contained on the needle stem, can move forward and backward under the manipulation of nozzle needle servomotor, changes flow area, regulate the jetting column diameter, make it to adapt to the needs of Load Regulation, when nozzle needle contacts with nozzle, when promptly being in the complete shut-down position, can seal the effect of damming that current play valve again;
3, moving forward and backward of nozzle needle servomotor is that pressure oil by being contained in the oil pipe of servomotor both sides promotes, and this oil pipe links to each other with speed regulator, and nozzle needle head and nozzle have good anti-cavitation by the forging of 2Cr13 stainless steel, the resisting silt abrasion performance.
Description of drawings
Fig. 1 is the schematic representation of water turbine water guider of the present utility model in water turbine.
Wherein: 1, link press span; 2, water inlet bend pipe; 3, jet pipe; 4, nozzle tip; 5, nozzle needle; 6, needle stem; 7, nozzle needle servomotor; 8, pressure gauge.
Embodiment
A kind of water turbine water guider as shown in Figure 1 comprises link press span 1, water inlet bend pipe 2, jet pipe 3, nozzle tip 4 and nozzle; Described jet pipe 3 feed-water ends connect water inlet bend pipe 2, and described water inlet bend pipe 2 is provided with pressure gauge 8; Nozzle tip 4 and nozzle are positioned on the jet pipe 3, on jet pipe 3 and 2 installations of water inlet bend pipe and the link press span 1, the water turbine water guider also comprises nozzle needle servomotor 7, nozzle needle 5 and needle stem 6, nozzle needle 5 is contained on the needle stem 6, can under the manipulation of nozzle needle servomotor 7, move forward and backward, change flow area, regulate the jetting column diameter; Make it to adapt to the needs of Load Regulation,, when promptly being in the complete shut-down position, can seal the effect of damming that current play valve again when nozzle needle contacts with nozzle.Moving forward and backward of nozzle needle servomotor is that pressure oil by being contained in the oil pipe of servomotor both sides promotes, and this oil pipe links to each other with speed regulator.Nozzle needle head and nozzle have good anti-cavitation by the forging of 2Cr13 stainless steel, the resisting silt abrasion performance.Jet pipe is the water-guiding element of Pelton wheel, and when high pressure water flow through wherein the fluidic channel of being made up of nozzle tip and nozzle, flow energy all was converted into the speed energy, forms high-speed jet, and the directive bucket promotes the runner rotation.
Nozzle needle 5, nozzle tip 4 have accurate geometrical shape and smooth water passage surface with nozzle, near adding nozzle entrance very long streamlined water guide leaf grating is housed, eliminate the influence of bend pipe to current, the jetting post remains on more than 94% its hydraulic efficiency thereby can form closely.
Above embodiment only is the utility model a kind of mode of execution wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, all belong to protection domain of the present utility model.
Claims (5)
1. water turbine water guider, comprise link press span, water inlet bend pipe, jet pipe, nozzle tip and nozzle, described jet pipe feed-water end connection water inlet bend pipe, described nozzle tip and nozzle are positioned on the jet pipe, on described jet pipe and installation of water inlet bend pipe and the link press span, it is characterized in that, described water turbine water guider also comprises nozzle needle servomotor, nozzle needle and needle stem, and described nozzle needle is contained on the needle stem, can move forward and backward under the manipulation of nozzle needle servomotor, change flow area, regulate the jetting column diameter.
2. water turbine water guider according to claim 1 is characterized in that, streamlined water guide leaf grating is equipped with at described nozzle entrance place.
3. water turbine water guider according to claim 1 is characterized in that, on the described water inlet bend pipe pressure gauge is housed.
4. water turbine water guider according to claim 1 is characterized in that, described water turbine water guider also comprises the speed regulator that can control the nozzle needle opening and closing time, and described speed regulator links to each other with the nozzle needle servomotor.
5. water turbine water guider according to claim 1 is characterized in that, described nozzle needle head and nozzle are by the forging of 2Cr13 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205152277U CN201786534U (en) | 2010-09-03 | 2010-09-03 | Water guide device of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205152277U CN201786534U (en) | 2010-09-03 | 2010-09-03 | Water guide device of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786534U true CN201786534U (en) | 2011-04-06 |
Family
ID=43818498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205152277U Expired - Fee Related CN201786534U (en) | 2010-09-03 | 2010-09-03 | Water guide device of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943505A (en) * | 2020-11-05 | 2021-06-11 | 深圳市鑫神科技开发有限公司 | Bus diffraction method and bus diffraction generator |
-
2010
- 2010-09-03 CN CN2010205152277U patent/CN201786534U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943505A (en) * | 2020-11-05 | 2021-06-11 | 深圳市鑫神科技开发有限公司 | Bus diffraction method and bus diffraction generator |
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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: 20110406 Termination date: 20110903 |