CN111946537A - Reaction type full-through-flow diving wet type hydraulic generator - Google Patents
Reaction type full-through-flow diving wet type hydraulic generator Download PDFInfo
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- CN111946537A CN111946537A CN202010995771.4A CN202010995771A CN111946537A CN 111946537 A CN111946537 A CN 111946537A CN 202010995771 A CN202010995771 A CN 202010995771A CN 111946537 A CN111946537 A CN 111946537A
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- generator
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- guide vane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/121—Blades, their form or construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a reaction type full through-flow diving wet type hydraulic generator, which comprises a stator, a rotor and a guide vane body, wherein one end of the generator, which is close to the guide vane body, is communicated with a water guide pipe, the other end of the generator is provided with a water outlet section, the water outlet section is provided with a tail pipe, and flowing water is guided by the water guide pipe to enter the generator and then flows through the rotor after being guided by the guide vane body. The generator guides flowing water to the guide vane body through the water guide pipe, the flowing water is impacted on the blade of the rotor after being guided by the guide vane body, the blade rotates after being impacted, the rotor and the stator winding do cutting magnetic induction line motion relative to each other, and the stator winding generates induction current, so that the effect of the generator is achieved, when the generator operates underwater, noise generated by a unit is much smaller than that of a conventional generator, and a motor cavity is communicated with external water to automatically supplement water and cool heat generated when the interior of the generator operates; the structure is simple and compact, the manufacture is very convenient, and the civil construction installation system of the power station and the structure of the generator room are simplified.
Description
Technical Field
The invention relates to a generator, in particular to a reaction type full through-flow diving wet type hydraulic generator.
Background
The hydraulic turbine converts water flow energy into mechanical energy, and uses the water head and flow of hydraulic power station to do work. According to the difference of hydraulic action of water flow on rotating wheel, it can be divided into two categories of reaction type water turbine and impact type water turbine.
The reaction type water turbine mainly uses the pressure energy of water flow (a small part of the water flow energy is also used) to do work. The flow direction of water flow through the rotating wheel is different, and the flow direction is divided into axial flow, mixed flow and through flow. The axial flow hydraulic turbine is characterized in that water flow passes through the rotating wheel and is always along the direction of the shaft; the mixed-flow water turbine is characterized in that water flow enters a rotating wheel along the radial direction and then gradually changes into the axial direction to leave the rotating wheel, so the mixed-flow water turbine is also called as a radial axial flow water turbine; the characteristic of the through-flow turbine is that the water flow is axial from the inlet to the draft tube outlet.
The impulse turbine is driven by the high-speed water flow (kinetic energy) to impact the runner blades to drive the runner of the turbine to rotate to do work. Such a turbine operating on the principle of water flow impulse action is called a pelton turbine, and a bucket (also called a pelton) turbine is commonly used. It has the working characteristics that: water from the pressure water pipe is sprayed on the bucket of the rotating wheel at high speed through the nozzle to push the rotating wheel to rotate to do work, and then falls into a tail water channel below the machine shell. The nozzle of the pelton turbine is on the same plane with the runner, and the jet flow direction is the tangential direction of the runner circumference, so the pelton turbine is also called as a tangential turbine.
The mixed-flow water turbine can be used in the water head range of 15-700m, and is generally applied in China due to stable operation and large highest efficiency value, and is mostly used in hydropower stations with medium water heads of 40-150m, and the defect is that the high efficiency area is narrow; the axial flow paddle turbine can be used in the water head range of 2-90m, has large water passing capacity, can rotate the impeller and is suitable for large flow. The hydropower station with 2-18m low water head and large load change has good running stability and wide high-efficiency area range of the water turbine. The through-flow turbine can be used in a water head range of 0.5-30m, has large water passing capacity, smooth flow channel, small hydraulic loss, high efficiency and high requirements on single pair of sealing water stop and insulation, and is suitable for low water head (0.5-16m) and large-flow power stations and tidal power stations in plain areas.
The commonly used impulse turbine is used more in a bucket (impulse) type, can be used in a water head range of 80-2000m, is suitable for a high water head and small flow power station, is mainly used for a high water head hydropower station with a water head of more than 100m, and has a simpler structure than a mixed flow type. The highest efficiency value of the water turbine is lower than that of a mixed flow type, but the high efficiency area is wide.
The through-flow type hydraulic turbine generator can be divided into a half through-flow type and a full through-flow type. The semi-through flow type can be divided into a shaft extension through flow type, a vertical shaft through flow type and a bulb through flow type.
The shaft-extending through-flow unit adopts a horizontal arrangement, and water flows through the blades basically along the axial direction and finally flows out of a bent (or called S-shaped) tail water pipe. The shaft of the water turbine horizontally penetrates out of the draft tube and is connected with the shaft of the generator, the generator is horizontally arranged in a plant, and compared with a vertical axial flow unit, the shaft-extending through-flow unit is not provided with a volute and an elbow-shaped draft tube, so that the civil engineering quantity is small; the generators are arranged in an open manner, so that the operation, the overhaul and the maintenance are convenient; because the unit adopts the straight bent draft tube, the energy recovery efficiency of the draft tube is low, the main shaft is difficult to seal, the noise is large during the operation, and the factors bring inconvenience to the operation and the maintenance, so the unit is generally only used for small units.
The shaft tubular generator is characterized in that a unit is arranged in a shaft on the upstream side of a water turbine, the generator and the water turbine are connected together through speed increasing devices such as gears or belts, and the like: because the generator and the speed increasing device are arranged in the open vertical shaft, the ventilation and damp-proof conditions are better, and the operation and the maintenance are both more convenient; the unit has simpler structure and lower cost; meanwhile, the water turbine diversion flow channel is divided into two parts by the vertical shaft, so that the hydraulic loss of the diversion flow channel is increased and is generally about 3% lower than that of a bulb type, and if reverse-phase power generation is carried out, the hydraulic efficiency of the vertical shaft type unit is lower.
The bulb turbine is a bulb turbine in which a generator is mounted in a bulb-shaped metal housing on the upstream side of a turbine, and the generator is called a bulb turbine because its outer shape closely resembles that of an incandescent bulb. The water flows through the runner in axial direction, and flows through the runner blade in axial symmetry, and finally flows out from the straight cone-shaped tail pipe. The generator shaft of the generator set is horizontally connected with the rotating wheel of the water turbine, and the shaft support structure, the guide bearing and the thrust bearing are all arranged in the bulb body. It is characterized in that: the bulb tubular turbine has smooth water flow, so the hydraulic efficiency is higher, and the bulb tubular turbine has larger unit flow and higher unit rotating speed; under the same water head and power, the sizes of the generator and the water turbine are relatively smaller, so that the size of a plant is reduced, and the quantity of civil engineering is reduced; because the generator is arranged in the underwater closed bulb body, the ventilation cooling and sealing of the generator, the arrangement, operation and maintenance of the bearing are relatively difficult, and the design of the generator is realized. Manufacturing also places higher demands on the unit, thereby increasing the cost of the unit.
The full through-flow set adopts horizontal arrangement, the rotor magnetic pole of the generator is directly installed on the outer edge of the runner wheel blade of the turbine, the rotor magnetic pole is isolated from the water flow in the runner through a sealing device, and the generator of the full through-flow set is also called a rim generator. It is characterized in that: a transmission shaft between the water turbine and the generator is eliminated, so that the axial size of the unit is shortened, and the rotor of the generator and the rotating wheel of the water turbine are combined into a whole, so that the structure of the unit is more compact, the length and the span of a workshop are reduced, the construction cost is reduced, the rotational inertia of the unit is increased, and the temperature stable operation of the unit is facilitated; the connection between the runner blade and the generator rotor is special, and the requirement on the manufacturing process is high; the sealing of the generator rotor rim is complicated.
Disclosure of Invention
The invention aims to provide a reaction type full through-flow diving wet hydraulic generator, wherein flowing water is guided to a guide vane body through a water guide pipe and then is impacted on a blade of a rotor after being guided by the guide vane body, the blade rotates after being impacted, the rotor does cutting magnetic induction linear motion relative to a stator winding, and the stator winding generates induced current, so that the effect of the generator is achieved, when the generator operates underwater, the noise generated by a unit is much smaller than that of a conventional generator, a motor cavity is communicated with external water to automatically supplement water and cool heat generated when the interior of the generator operates, meanwhile, the whole structure is simple and compact, the manufacture is very convenient, and a civil construction installation system of a power station and the structure of a generator room are simplified.
The purpose of the invention can be realized by the following technical scheme:
a reaction type full-through-flow diving wet hydraulic generator comprises a stator, a rotor and a guide vane body, wherein a water guide pipe is communicated with one end of the generator close to the guide vane body, a water outlet section is arranged at the other end of the generator, a tail pipe is arranged on the water outlet section, flowing water is guided by the water guide pipe to enter the generator, flows through the rotor after being guided by the guide vane body and then sequentially flows out through the water outlet section and the tail pipe.
Further, the rotor includes a blade and a fixed shaft.
Furthermore, the stator winding adopts a high-insulation water-resistant winding wire.
Furthermore, an anti-corrosion zinc plate is arranged in the inner cavity of the stator.
Furthermore, the blades of the rotor form a rotating torque under the action of flowing water, the rotor rotates to generate a rotating magnetic field, the rotor performs cutting magnetic induction line motion relative to a static stator winding, the water wheel stator winding generates induced current, and the generated current is transmitted to the control cabinet through a lead cable of the water wheel stator winding.
Furthermore, the blades of the rotor rotate around the fixed shaft under the impact of flowing water, the blades of the rotor are rotatably connected with the fixed shaft through roller bearings, and two ends of the rotating hub cavity seal the bearing cavity through end covers and a dynamic sealing structure.
Furthermore, a first center hole and a second center hole are axially arranged on the fixed shaft, the first center hole and the second center hole are respectively located at two ends of the fixed shaft, an oil injection pipe and an oil outlet pipe are respectively arranged on the first center hole and the second center hole, and the guide vane body and the water outlet section are respectively connected through the oil injection pipe and the oil outlet pipe.
The invention has the beneficial effects that:
1. the generator guides flowing water to the guide vane body through the water guide pipe, the flowing water is impacted on the blade of the rotor after being guided by the guide vane body, the blade rotates after being impacted, the rotor and the stator winding do cutting magnetic induction line motion relative to each other, and the stator winding generates induction current, so that the effect of the generator is achieved, when the generator operates underwater, noise generated by a unit is much smaller than that of a conventional generator, and a motor cavity is communicated with external water to automatically supplement water and cool heat generated when the interior of the generator operates;
2. the generator has simple and compact structure and convenient manufacture, and simplifies the civil construction installation system of the power station and the structure of the generator room.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of the structure of the generator of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A reaction type full through-flow diving wet hydraulic generator comprises a stator 1, a rotor 2 and a guide vane body 3, wherein one end of the generator, which is close to the guide vane body 3, is communicated with a water conduit 6, the other end of the generator is provided with a water outlet section 4, the water outlet section 4 is provided with a tail pipe 5, flowing water is guided by the water conduit 6 to enter the generator, flows through the rotor 2 under the guidance of the guide vane body 3 and then flows out through the water outlet section 4 and the tail pipe 5 in sequence, and the rotor 2 comprises a blade and a fixed shaft 10.
The winding of the stator 1 adopts a high-insulation water-resistant winding wire, and an inner cavity of the stator 1 is provided with an anti-corrosion zinc plate 9.
The blades of the rotor 2 form a rotating torque under the action of flowing water, the rotor 2 rotates to generate a rotating magnetic field, the rotor 2 cuts magnetic induction lines relative to the stationary stator 1 winding, the water wheel stator winding generates induced current, and the generated current is transmitted to the control cabinet through a lead cable of the water wheel stator winding.
The blades of the rotor 2 rotate around the fixed shaft 10 under the impact of flowing water, the blades of the rotor 2 are rotatably connected with the fixed shaft 10 through roller bearings, and two ends of a rotating hub cavity seal the bearing cavity through end covers and a dynamic sealing structure.
The axial of fixed axle 10 is equipped with first centre bore and second centre bore, and first centre bore and second centre bore are located fixed axle 10 both ends respectively, are equipped with oiling pipe 7 and oil outlet pipe 8 respectively on first centre bore and the second centre bore, and guide vane body 3 and water outlet section 4 are connected through oiling pipe 7 and oil outlet pipe 8 respectively.
When the water-cooled generator is used, flowing water is guided to the guide vane bodies 3 through the water guide pipes 6 and then is impacted on the blades of the rotor 2 after being guided by the guide vane bodies 3, the blades rotate after being impacted, the rotor 2 moves relative to the stator 1 winding in a cutting magnetic induction line mode, and the stator winding generates induced current, so that the effect of the generator is achieved, when the generator operates underwater, noise generated by a unit is much smaller than that generated by a conventional generator, and a motor cavity is communicated with external water to automatically supplement water and cool heat generated when the interior of the generator operates.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (7)
1. The utility model provides a full through-flow dive wet hydraulic generator of reaction formula, full through-flow dive wet hydraulic generator includes stator (1), rotor (2) and guide vane body (3), its characterized in that, the one end intercommunication that is close to guide vane body (3) on the generator is equipped with leading water pipe (6), and the other end is equipped with out water section (4), is equipped with tail pipe (5) on play water section (4), and flowing water gets into the generator through leading water pipe (6) water conservancy diversion, flows through rotor (2) after guide vane body (3) direction, again in proper order through going out water section (4) and tail pipe (5) outflow.
2. A counter-impact full-through-flow submersible wet hydro-generator according to claim 1, characterized by the fact that the rotor (2) comprises blades and a fixed shaft (10).
3. The reaction type full through-flow diving wet type hydraulic generator as claimed in claim 1, characterized in that the stator (1) winding adopts high insulation water-proof winding wire.
4. The counter-impact full-through-flow submersible wet hydraulic turbine generator according to claim 1, characterized in that the inner cavity of the stator (1) is provided with an anti-corrosion zinc plate (9).
5. The reaction type full through-flow diving wet type hydraulic generator as claimed in claim 1, characterized in that the blades of the rotor (2) form a rotation torque under the action of flowing water, the rotor (2) rotates to generate a rotation magnetic field, the rotor (2) does a cutting magnetic induction line motion relative to the stationary stator (1) winding, the hydraulic turbine stator winding generates an induced current, and the generated current is transmitted to the control cabinet through the lead cable of the hydraulic turbine stator winding.
6. The counter-impact full-through-flow submersible wet-type hydraulic generator according to claim 1, characterized in that the blades of the rotor (2) rotate around the fixed shaft (10) under the impact of flowing water, the blades of the rotor (2) are rotatably connected with the fixed shaft (10) through roller bearings, and the two ends of the rotating hub cavity are sealed by end covers and dynamic sealing structures.
7. The wet-type back-beating through-flow submersible hydraulic turbine generator according to claim 2, wherein the fixed shaft (10) is axially provided with a first central hole and a second central hole, the first central hole and the second central hole are respectively positioned at two ends of the fixed shaft (10), the first central hole and the second central hole are respectively provided with an oil injection pipe (7) and an oil outlet pipe (8), and the guide vane body (3) and the water outlet section (4) are respectively connected through the oil injection pipe (7) and the oil outlet pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995771.4A CN111946537A (en) | 2020-09-21 | 2020-09-21 | Reaction type full-through-flow diving wet type hydraulic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995771.4A CN111946537A (en) | 2020-09-21 | 2020-09-21 | Reaction type full-through-flow diving wet type hydraulic generator |
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| Publication Number | Publication Date |
|---|---|
| CN111946537A true CN111946537A (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010995771.4A Pending CN111946537A (en) | 2020-09-21 | 2020-09-21 | Reaction type full-through-flow diving wet type hydraulic generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235532A (en) * | 2021-01-28 | 2021-08-10 | 孙振全 | Farmland drainage device with canal safeguard function |
| CN113294279A (en) * | 2021-07-05 | 2021-08-24 | 安徽理工大学 | Full through-flow diving wet type hydraulic generator |
-
2020
- 2020-09-21 CN CN202010995771.4A patent/CN111946537A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235532A (en) * | 2021-01-28 | 2021-08-10 | 孙振全 | Farmland drainage device with canal safeguard function |
| CN113294279A (en) * | 2021-07-05 | 2021-08-24 | 安徽理工大学 | Full through-flow diving wet type hydraulic generator |
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