CN102828890B - A kind of hydro-generating Unit for micro-head waterpower development - Google Patents
A kind of hydro-generating Unit for micro-head waterpower development Download PDFInfo
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- CN102828890B CN102828890B CN201210372703.8A CN201210372703A CN102828890B CN 102828890 B CN102828890 B CN 102828890B CN 201210372703 A CN201210372703 A CN 201210372703A CN 102828890 B CN102828890 B CN 102828890B
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Abstract
For a hydro-generating Unit for micro-head waterpower development, relate to technical field of hydroelectric generation, its structure comprises multiple hydroelectric generator, and hydroelectric generator comprises pipeline, is provided with synchronous permanent-magnet generator and water turbine in pipeline, synchronous permanent-magnet generator is fixed in pipeline by the fixed tube of multiple hollow, the joint being positioned at one of them fixed tube above synchronous permanent-magnet generator and tube wall offers the cable export for wearing synchronous permanent-magnet generator cable, cable export is provided with grid-connected frequency variator and protecting control equipment, the application adopts synchronous permanent-magnet generator, generator can be made to cancel exciter alternator control gear, owing to employing grid-connected frequency variator, generator set can be made simply grid-connected, generating unit speed is unrestricted in certain speed range, speed control device can be cancelled, simplify generating auxiliary system, thus make the structure of generator simple, a large amount of civil engineering costs and equipment manufacturing cost can be saved, be convenient to the universal and popularization on market.
Description
Technical field
The application relates to technical field of hydroelectric generation, particularly relates to a kind of hydro-generating Unit for micro-head waterpower development.
Background technique
Hydroelectric power is one of best clean renewable green energy resource of finding of the mankind so far, and therefore, countries in the world have all been placed on the preferential position of energy development exploitation water-energy generating electricity.Up to the present, traditional water-energy generating electricity development scheme and technology are very ripe, and this development scheme is that head is higher on the whole, and Economy is better, more has Development volue, otherwise head is lower, and its Economy is poorer, does not more have Development volue.Therefore, with regard to the water power plant developed with regard to current China or developing, general head, all more than 2.5 meters, it is generally acknowledged that less than 2.5 meters (hereinafter referred to as micro-heads) are because its energy density is lower, single-point generating (installation) scale is less, generated energy is also few, not yet causes the interest of people.
But, micro-head hydraulic power potentials extremely enriches in China, in order to realize making full use of water resources, the waterpower of micro-head section is utilized to carry out generating electricity also very important, but, the rotary wheel of water turbine being applicable to this head section is at present blank substantially, optional without suitable turbine-generator units, if select the existing bulb tubular hydraulic generating set being applicable to more than 2.5 meters, the Economy then developed is too poor, and be considered to without Development volue, reason is as follows: (1) existing bulb tubular hydraulic generating set development scheme need build dam and power plant building, corresponding civil engineering costs generally all can account for 30% to 50% of whole engineering cost, (2) scaled bulb tubular synchronous water turbine generator unit needs a set of complete water turbine governing and auxiliary equipment system is assisted, but, synchronous generator is because its rotating speed is low, magnetic pole is many and cause bulky, but also need to be equipped with corresponding excitation and a large amount of Protection control systems, make the complex structure of this unit, its cost generally all can account for 40% to 60% of whole engineering cost.
Therefore, for micro-head hydraulic power potentials, develop according to existing scaled bulb tubular synchronous water turbine generator unit, be then difficult to bear the cost such as civil engineering costs and multiple corollary equipment involved great expense, in addition, suitable rotary wheel of water turbine is not yet had in prior art.
application content
The object of the application is avoid deficiency of the prior art and provide a kind of hydro-generating Unit for micro-head waterpower development, this hydro-generating Unit structure being used for micro-head waterpower development is simple, a large amount of civil engineering costs and equipment manufacturing cost can be saved, be convenient to the universal and popularization on market.
The object of the application is achieved through the following technical solutions.
A kind of hydro-generating Unit for micro-head waterpower development is provided, includes multiple hydroelectric power
Machine, hydroelectric generator comprises pipeline, the water turbine being provided with synchronous permanent-magnet generator in pipeline and being connected with synchronous permanent-magnet generator; Synchronous permanent-magnet generator is fixed in pipeline by the fixed tube of multiple hollow; one end of the fixed tube of hollow is connected with the shell of synchronous permanent-magnet generator; the other end of the fixed tube of hollow is connected with inner-walls of duct; the fixed tube of one of them hollow and the joint of tube wall offer the cable export for wearing synchronous permanent-magnet generator cable; cable export is provided with grid-connected frequency variator and protecting control equipment, and synchronous permanent-magnet generator cable wears cable export and is electrically connected with grid-connected frequency variator and protecting control equipment respectively.By being the low tension power supply of 50HZ after frequency conversion, being sent by cable, or accessing electric power system by power transformer.
Preferably, the flow inlet of pipeline is provided with the horn-like manger board connected with pipeline.
Another is preferred, and the runner of water turbine is set to the runner of the minute-pressure flow velocity type of spiral two blade type or spiral three-vane.
Preferred, the wheel hub of runner is post taper.
Another is preferred, and cable export place is provided with the airtight installation room can installing inverter, and grid-connected frequency variator and protecting control equipment are all positioned in airtight installation room.
Another is preferred, and the water export of pipeline is set to the tapering type water export of flaring.
Another is preferred, and the flow inlet of pipeline and/or water export are provided with the gate for cutting off current.
Another is preferred, and multiple hydroelectric generator in setting of longitudinally arranging, and is interconnected respectively by buoyancy tank between multiple hydroelectric generator.
Another is preferred, and the pipeline outer wall of hydroelectric generator is provided with the anchor formula fixing device for being connected with adjacent hydroelectric generator.Another is preferred, is connected by buoyancy tank with adjacent unit.
The beneficial effect of the application is as follows:
The structure of the application includes multiple hydroelectric generator, and hydroelectric generator comprises pipeline, the water turbine being provided with synchronous permanent-magnet generator in pipeline and being connected with synchronous permanent-magnet generator, synchronous permanent-magnet generator is fixed in pipeline by the fixed tube of multiple hollow, and one end of the fixed tube of hollow is connected with the shell of synchronous permanent-magnet generator, and the other end of the fixed tube of hollow is connected with inner-walls of duct, the fixed tube of one of them hollow and the joint of tube wall offer the cable export for wearing synchronous permanent-magnet generator cable, cable export is provided with grid-connected frequency variator and protecting control equipment, synchronous permanent-magnet generator cable wears cable export, and be electrically connected with grid-connected frequency variator and protecting control equipment respectively, the application adopts synchronous permanent-magnet generator, generator can be made to cancel exciter alternator control gear, owing to employing grid-connected frequency variator, generator set can be made simply grid-connected, generating unit speed is unrestricted in certain speed range, speed control device can be cancelled, simplify generating auxiliary system, thus make the structure of generator simple, a large amount of civil engineering costs and equipment manufacturing cost can be saved, be convenient to the universal and popularization on market.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the application, but the content in accompanying drawing does not form any restriction to the application.
Fig. 1 is the structural representation of a hydroelectric generator of the embodiment 1 of the application.
Fig. 2 is the view that the floating of a hydroelectric generator of the embodiment 1 of the application is installed.
Fig. 3 is the view of the embodiment 1 of the application.
Fig. 4 is the structural representation of a hydroelectric generator of the embodiment 2 of the application.
Fig. 5 is the structural representation of another angle of a hydroelectric generator of the embodiment 2 of the application.
Fig. 6 is the view of the fixed installation of a hydroelectric generator of the embodiment 2 of the application.
Include in Fig. 1 to Fig. 6:
1---pipeline;
2---the shell of synchronous permanent-magnet generator;
3---water turbine;
4---fixed tube;
5---horn-like manger board;
6---anchor formula fixing device;
7---buoyancy tank;
8---installation room;
9---gate.
Embodiment
With the following Examples the application is described further.
embodiment 1.
A kind of hydro-generating Unit for micro-head waterpower development of the present embodiment as shown in Figure 1, include multiple hydroelectric generator, as shown in Figures 2 and 3, hydroelectric generator comprises pipeline 1, the water turbine 3 being provided with synchronous permanent-magnet generator in pipeline 1 and being connected with synchronous permanent-magnet generator; Synchronous permanent-magnet generator is fixed in pipeline 1 by the fixed tube 4 of multiple hollow, and one end of the fixed tube 4 of hollow is connected with the shell 2 of synchronous permanent-magnet generator, and the other end of the fixed tube 4 of hollow is connected with pipeline 1 inwall; Fixed tube 4 and the joint of tube wall of one of them hollow offer the cable export for wearing synchronous permanent-magnet generator cable; cable export is provided with grid-connected frequency variator and protecting control equipment, and synchronous permanent-magnet generator cable wears cable export and is electrically connected with grid-connected frequency variator and protecting control equipment respectively.
The application adopts synchronous permanent-magnet generator, generator can be made to cancel exciter alternator control gear, owing to employing grid-connected frequency variator, generator set can be made simply grid-connected, generating unit speed is unrestricted in certain speed range, can cancel speed control device, simplifies generating auxiliary system, thus make the structure of generator simple, a large amount of civil engineering costs and equipment manufacturing cost can be saved.
Work in view of under the applicable certain speed range of unit of the present invention, it is exerted oneself and has controllability, has grid-connected friendly condition, and consider that this unit is hided simultaneously and to be incorporated at electrical network end, low voltage ride through device is installed in suggestion additional, to meet electrical network access requirement.
The hydroelectric generator of the application adopts the structure of integrated form, is convenient to production and processing, is convenient to the assembling of unit.
The fixed tube 4 of generator hollow, simultaneously as the outlet of cable and the fixed guide vane of water turbine 3, does not therefore need the movable guide vane establishing water turbine 3.
The fixed tube 4 of hollow is uniformly distributed setting along the outer circumference of the shell 2 of synchronous permanent-magnet generator, when using as fixed guide vane, seat ring (overcurrent part) can be made to become to be integrated, and forms circular rector before making current enter runner simultaneously.
Preferably, the fixed tube 4 of hollow is that equidistant annular spread is arranged along the outer circumference of the shell 2 of synchronous permanent-magnet generator, and preferably, the fixed tube 4 of hollow helically arranges on the outer circumferential face of the shell 2 of synchronous permanent-magnet generator.Circular rector is formed before current can be made better to enter runner.
The movable guide vane of prior art is used for adjust flux, and for cutting off current during compressor emergency shutdown, the application is owing to adopting frequency conversion interconnection technology, and therefore, can not establish movable guide vane, rotaring wheel structure can be made to simplify, and cost is low, is convenient to manufacture and processing.
Concrete, the flow inlet of pipeline 1 is provided with the horn-like manger board 5 connected with pipeline 1.Locally can gush high water level, make the water export of the flow inlet of pipeline 1 and pipeline 1 form certain head.
The runner of water turbine 3 is set to the runner of the minute-pressure flow velocity type of spiral two blade type or spiral three-vane.The wheel hub of runner is post taper.The runner of this kind of structure is a kind ofly specifically applied to micro-water head power station, utilizes water flow dynamic energy that water can be converted into the runner of mechanical energy.
Concrete, cable export place is provided with airtight installation room 8, and grid-connected frequency variator and protecting control equipment are all positioned in airtight installation room 8.
Concrete, multiple hydroelectric generator in setting of longitudinally arranging, and is interconnected respectively by buoyancy tank 7 between multiple hydroelectric generator.
Concrete, pipeline 1 outer wall of hydroelectric generator is provided with the anchor formula fixing device 6 for being connected with adjacent hydroelectric generator.As shown in Figure 3, the hydroelectric generator of the application is connected by buoyancy tank 7 with adjacent unit.Be fixed on anchor formula fixing device 6 by buoyancy tank 7 to realize being connected with adjacent unit.The buoyancy tank 7 of both sides is fixed by foreign object, makes the fixing of all units.
embodiment 2.
As shown in Figures 4 to 6, the main technical schemes of the present embodiment is identical with embodiment 1, in the present embodiment unaccounted feature for a kind of hydroelectric generator for micro-head waterpower development of the present embodiment, adopts the explanation in embodiment 1, no longer repeats at this.The difference of the present embodiment and embodiment 1 is:
The water export of pipeline 1 is set to the tapering type water export of flaring.Be conducive to the kinetic energy energy reclaiming outlet of rotary wheel, improve unit efficiency.
The flow inlet of pipeline 1 and/or water export are provided with the gate 9 for cutting off current.For conventional low water head tubular-Francis turbine, arranging gate 9 is also that a kind of unit of protecting avoids one of means that flying escapes runs.The application does not need to protect unit to avoid flying ease by gate 9 and runs, and the gate 9 of the application is only facilitate unit maintenance, also can cancel.Concrete, the front portion of pipeline 1 or rear portion are provided with the gate 9 for cutting off current.For conventional low water head tubular-Francis turbine, arranging gate 9 is also that a kind of unit of protecting avoids one of means that flying escapes runs.The application does not need to protect unit to avoid flying ease by gate 9 and runs, and the gate 9 of the application is only facilitate unit maintenance, also can cancel.
Finally should be noted that; above embodiment is only for illustration of the technological scheme of the application but not the restriction to the application's protection domain; although be explained in detail the application with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technological scheme of the application or equivalent replacement, and not depart from essence and the scope of technical scheme.
Claims (5)
1. the hydro-generating Unit for micro-head waterpower development, for the hydroelectric power lower than the head of 2.5 meters, include multiple hydroelectric generator, hydroelectric generator comprises pipeline, the water turbine being provided with synchronous permanent-magnet generator in pipeline and being connected with synchronous permanent-magnet generator; It is characterized in that: synchronous permanent-magnet generator is fixed in pipeline by the fixed tube of multiple hollow, one end of the fixed tube of hollow is connected with the shell of synchronous permanent-magnet generator, and the other end of the fixed tube of hollow is connected with inner-walls of duct; The fixed tube of one of them hollow and the joint of tube wall offer the cable export for wearing synchronous permanent-magnet generator cable, cable export is provided with grid-connected frequency variator and protecting control equipment, and synchronous permanent-magnet generator cable wears cable export and is electrically connected with grid-connected frequency variator and protecting control equipment respectively;
The flow inlet of pipeline is provided with the horn-like manger board connected with pipeline;
The runner of water turbine is set to the runner of the minute-pressure flow velocity type of spiral two blade type, and the medial axis of two blades is in same straight line;
The wheel hub of runner is post taper;
The water export of pipeline is set to the tapering type water export of flaring.
2. a kind of hydro-generating Unit for micro-head waterpower development according to claim 1, it is characterized in that: cable export place is provided with airtight installation room, grid-connected frequency variator and protecting control equipment are all positioned in airtight installation room.
3. a kind of hydro-generating Unit for micro-head waterpower development according to claim 1, is characterized in that: the flow inlet of pipeline and/or water export are provided with the gate for cutting off current.
4. a kind of hydro-generating Unit for micro-head waterpower development according to claims 1 to 3 any one, is characterized in that: multiple hydroelectric generator in setting of longitudinally arranging, and is interconnected respectively by buoyancy tank between multiple hydroelectric generator.
5. a kind of hydro-generating Unit for micro-head waterpower development according to claim 4, is characterized in that: the pipeline outer wall of hydroelectric generator is provided with the anchor formula fixing device for being connected with adjacent hydroelectric generator.
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| CN201210372703.8A CN102828890B (en) | 2012-09-29 | 2012-09-29 | A kind of hydro-generating Unit for micro-head waterpower development |
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| CN201210372703.8A CN102828890B (en) | 2012-09-29 | 2012-09-29 | A kind of hydro-generating Unit for micro-head waterpower development |
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| CN102828890B true CN102828890B (en) | 2016-04-20 |
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| CN205190107U (en) * | 2015-04-22 | 2016-04-27 | 孟越峰 | Full through -flow hydraulic generator of integration intelligence |
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| CN111197549B (en) * | 2018-11-16 | 2020-12-25 | 杨明恭 | Water flow power generation device |
| CN110661290B (en) * | 2019-09-19 | 2023-03-03 | 泰安阳光动力电机有限公司 | Low-water-head hydropower intelligent control system and method |
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