CN102828890A - Hydroelectric generating set for micro-head hydroenergy development - Google Patents
Hydroelectric generating set for micro-head hydroenergy development Download PDFInfo
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- CN102828890A CN102828890A CN2012103727038A CN201210372703A CN102828890A CN 102828890 A CN102828890 A CN 102828890A CN 2012103727038 A CN2012103727038 A CN 2012103727038A CN 201210372703 A CN201210372703 A CN 201210372703A CN 102828890 A CN102828890 A CN 102828890A
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Abstract
The invention discloses a hydroelectric generating set for micro-head hydroenergy development, and relates to the technical field of hydroelectric generation. The hydroelectric generating set comprises a plurality of hydroelectric generators, wherein the hydroelectric generators comprise pipelines; synchronous permanent magnet generators and water turbines are arranged in the pipelines; the synchronous permanent magnet generators are fixed in the pipelines through a plurality of hollow fixing pipes; joints of one of the fixing pipes above the synchronous permanent magnet generators and the pipeline wall are provided with cable outlets for the penetration of cables of the synchronous permanent magnet generators; and the cable outlets are provided with grid-connected inverters and protection control devices. According to the invention, the synchronous permanent magnet generators are adopted to ensure that a synchronous exciter control device of the motor is cancelled; the grid-connected inverters are adopted to ensure that the generating set is simple in grid connection, the set rotating speed is not restricted in a certain rotating speed range, a speed regulating device can be cancelled and a generating auxiliary system is simplified; and therefore, the structure of the motor is simple, plenty of civil engineering cost and equipment construction cost can be saved, and popularization and generalization on the market are convenient.
Description
Technical field
The application relates to the hydraulic power generation technology field, particularly relates to a kind of hydroelectric power unit that is used for little head waterpower development.
Background technique
Hydroelectric power is one of human so far best renewable green energy resource of cleaning that finds, and therefore, countries in the world all have been placed on the exploitation water-energy generating electricity preferential position of energy development.Up to the present, traditional water-energy generating electricity development scheme and technology are very ripe, and this development scheme is that head is high more on the whole, and Economy is good more, have exploitation to be worth more, otherwise head is low more, and its Economy is poor more, and exploitation is not worth more.Therefore; With regard to the water power plant that present China has developed or developed, general head is all more than 2.5 meters, it is generally acknowledged below 2.5 meters that (below be called little head) is because its energy density is lower, single-point generating (installation) scale is less; Generated energy is also few, does not cause people's interest as yet.
Yet little head hydraulic power potentials is extremely abundant in China, in order to realize making full use of water resources; It is also very important to utilize the waterpower of little head section to generate electricity, yet the rotary wheel of water turbine that is applicable to this head section at present is blank basically; No suitable hydraulic generator unit is optional; If select the existing scaled bulb tubular hydraulic generator group that is applicable to more than 2.5 meters for use, then the Economy of exploitation is too poor, is worth and be considered to not have exploitation; Reason is following: (1) existing scaled bulb tubular hydraulic generator group development scheme need be built dam and power plant building, and corresponding civil engineering costs generally all can account for 30% to 50% of whole engineering cost; (2) the synchronous hydraulic generator unit of scaled bulb tubular need one the cover complete water turbine governing and auxiliary equipment system assist; Yet; It is bulky that synchronous generator is low owing to its rotating speed, magnetic pole causes more; But also need to be equipped with corresponding excitation and a large amount of protection control system, and making the complex structure of this unit, its cost generally all can account for 40% to 60% of whole engineering cost.
Therefore; For little head hydraulic power potentials,, then be difficult to bear costs such as the civil engineering costs that involves great expense and multiple corollary equipment if adopt the synchronous hydraulic generator unit of existing scaled bulb tubular to develop; In addition, suitable rotary wheel of water turbine is not yet arranged in the existing technology.
The application content
The application's purpose is to avoid deficiency of the prior art and a kind of hydroelectric power unit that is used for little head waterpower development is provided; This hydroelectric power unit that is used for little head waterpower development is simple in structure; Can save a large amount of civil engineering costs and equipment manufacturing cost, be convenient to popularizing and promoting on the market.
The application's purpose realizes through following technological scheme.
A kind of hydroelectric power unit that is used for little head waterpower development is provided, includes a plurality of hydroelectric powers
Machine, hydroelectric generator comprises pipeline, the water turbine that is provided with the synchronous permanent-magnet generator in the pipeline and is connected with the synchronous permanent-magnet generator; The synchronous permanent-magnet generator is fixed in the pipeline through the fixed tube of a plurality of hollows; 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 that is used to wear synchronous permanent-magnet generator cable; The cable export is provided be incorporated into the power networks frequency variator and protection control apparatus, and synchronous permanent-magnet generator cable wears the cable export, also is electrically connected be incorporated into the power networks frequency variator and protection control apparatus respectively.Through being the low tension power supply of 50HZ after the frequency conversion, see off through cable, or insert electric power system through power transformer.
Preferably, the flow inlet of pipeline is provided with the horn-like manger board that joins 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 types or spiral three blade types.
Preferred, the wheel hub of runner is the post taper.
Another is preferred, and cable export place is provided with the airtight installation room that inverter can be installed, and be incorporated into the power networks frequency variator and protection control apparatus all are positioned in the 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 that is used to cut off current.
Another is preferred, and a plurality of hydroelectric generators are the setting of vertically arranging, and interconnects through buoyancy tank respectively between a plurality of hydroelectric generator.
Another is preferred, and the pipeline outer wall of hydroelectric generator is provided with and is used for the anchor formula fixing device that is connected with adjacent hydroelectric generator.Another is preferred, is connected through buoyancy tank with adjacent unit.
The application's beneficial effect is following:
The application's structure includes a plurality of hydroelectric generators, and hydroelectric generator comprises pipeline, the water turbine that is provided with the synchronous permanent-magnet generator in the pipeline and is connected with the synchronous permanent-magnet generator; The synchronous permanent-magnet generator is fixed in the pipeline through the fixed tube of a plurality of hollows, and an 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 that is used to wear synchronous permanent-magnet generator cable, and the cable export is provided be incorporated into the power networks frequency variator and protection control apparatus, and synchronous permanent-magnet generator cable wears the cable export, also is electrically connected be incorporated into the power networks frequency variator and protection control apparatus respectively; The application adopts the synchronous permanent-magnet generator; Can make and owing to used the frequency variator that is incorporated into the power networks, generator set is incorporated into the power networks simply by generator cancellation exciter alternator control gear; Generating unit speed is unrestricted in certain speed range; Can cancel speed control device, simplify the generating auxiliary system, thereby make generator Structure simple; Can save a large amount of civil engineering costs and equipment manufacturing cost, be convenient to popularizing and promoting on the market.
The movable guide vane of existing technology is used to regulate flow, and is used to cut off current during compressor emergency shutdown, and therefore the application, can not establish movable guide vane owing to adopt the frequency conversion interconnection technology, and rotaring wheel structure is simplified, and cost is low, is convenient to make and processing.
Concrete, the flow inlet of pipeline 1 is provided with the horn-like manger board 5 that joins with pipeline 1.Can gush high water level in the part, make the flow inlet of pipeline 1 and the water export of 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 types or spiral three blade types.The wheel hub of runner is the post taper.The runner of this kind structure be a kind of specialized application in little head power station, utilize dynamic energy of water flow can be converted into water the runner of mechanical energy.
Concrete, cable export place is provided with airtight installation room 8, and be incorporated into the power networks frequency variator and protection control apparatus all are positioned in the airtight installation room 8.
Concrete, a plurality of hydroelectric generators are the setting of vertically arranging, and interconnect through buoyancy tank 7 respectively between a plurality of hydroelectric generator.
Concrete, pipeline 1 outer wall of hydroelectric generator is provided with and is used for the anchor formula fixing device 6 that is connected with adjacent hydroelectric generator.As shown in Figure 3, the application's hydroelectric generator is connected through buoyancy tank 7 with adjacent unit.Can be fixed in anchor formula fixing device 6 through buoyancy tank 7 realizes being connected with adjacent unit.The buoyancy tank 7 of both sides is fixed through foreign object, makes the fixing of all units.
Description of drawings
Utilize accompanying drawing that the application is further specified, but the content in the accompanying drawing does not constitute any restriction to the application.
Fig. 1 is the application's embodiment's 1 the structural representation of a hydroelectric generator.
Fig. 2 is the view that the application's embodiment's 1 the floating of a hydroelectric generator is installed.
Fig. 3 is the application's embodiment's 1 a view.
Fig. 4 is the application's embodiment's 2 the structural representation of a hydroelectric generator.
Fig. 5 is the application's embodiment's 2 the structural representation of another angle of a hydroelectric generator.
Fig. 6 is the application's embodiment's 2 the view of fixed installation of a hydroelectric generator.
In Fig. 1 to Fig. 6, include:
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
In conjunction with following examples the application is described further.
embodiment 1.
It is as shown in Figure 1 that present embodiment a kind of is used for the hydroelectric power unit of little head waterpower development; Include a plurality of hydroelectric generators; As shown in Figures 2 and 3, hydroelectric generator comprises pipeline 1, the water turbine 3 that is provided with the synchronous permanent-magnet generator in the pipeline 1 and is connected with the synchronous permanent-magnet generator; The synchronous permanent-magnet generator is fixed in the pipeline 1 through the fixed tube 4 of a plurality of hollows, and an 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; The fixed tube 4 of one of them hollow offers the cable export that is used to wear synchronous permanent-magnet generator cable with the joint of tube wall; The cable export is provided be incorporated into the power networks frequency variator and protection control apparatus, and synchronous permanent-magnet generator cable wears the cable export, also is electrically connected be incorporated into the power networks frequency variator and protection control apparatus respectively.
The application adopts the synchronous permanent-magnet generator, can make generator cancel the exciter alternator control gear, owing to used the frequency variator that is incorporated into the power networks; Generator set is incorporated into the power networks simply; Generating unit speed is unrestricted in certain speed range, can cancel speed control device, simplifies the generating auxiliary system; Thereby make generator Structure simple, can save a large amount of civil engineering costs and equipment manufacturing cost.
In view of working under the applicable certain speed range of unit of the present invention, it is exerted oneself and has controllability, has the friendly type condition that is incorporated into the power networks, and considers simultaneously that this unit is hided to incorporate at the electrical network end, and the low voltage traversing device is installed in suggestion additional, inserts requirement to satisfy electrical network.
The application's hydroelectric generator adopts the structure of integrated form, is convenient to production and processing, is convenient to the assembling of unit.
Therefore the fixed tube 4 of generator hollow need not establish the movable guide vane of water turbine 3 simultaneously as the outlet of cable and the fixed guide vane of water turbine 3.
The fixed tube 4 of hollow when using as fixed guide vane, can make seat ring (overcurrent part) become one along the outer circumferentially even distributed and arranged of the shell 2 of synchronous permanent-magnet generator, makes current get into the preceding circular rector that forms of runner simultaneously.
Preferably, the fixed tube 4 of hollow circumferentially is equidistant annular spread setting along the shell 2 of synchronous permanent-magnet generator outer, and preferred, the fixed tube 4 of hollow is arranged on the outer circumferential face of the shell 2 of synchronous permanent-magnet generator in the shape of a spiral.Form circular rector before can making current get into runner better.
Present embodiment a kind of is used for hydroelectric generator such as Fig. 4 of little head waterpower development to shown in Figure 6, and the main technical schemes of present embodiment is identical with embodiment 1, unaccounted characteristic in the present embodiment, and the explanation among the employing embodiment 1 is no longer given unnecessary details at this.Present embodiment and embodiment's 1 difference is:
The water export of pipeline 1 is set to the tapering type water export of flaring.Help reclaiming the kinetic energy energy of outlet of rotary wheel, improve unit efficiency.
The flow inlet of pipeline 1 and/or water export are provided with the gate 9 that is used to cut off current.For conventional low water head through-flow unit, it also is that a kind of unit of protecting avoids flying one of the means of operation of escaping that gate 9 is set.The application need not protect unit to avoid flying the ease operation through gate 9, and the application's gate 9 only is to make things convenient for unit maintenance, also can cancel.Concrete, the front portion of pipeline 1 or rear portion are provided with the gate 9 that is used to cut off current.For conventional low water head through-flow unit, it also is that a kind of unit of protecting avoids flying one of the means of operation of escaping that gate 9 is set.The application need not protect unit to avoid flying the ease operation through gate 9, and the application's gate 9 only is to make things convenient for unit maintenance, also can cancel.
Should be noted that at last; Above embodiment only be used to explain the application technological scheme but not to the restriction of the application's protection domain; Although the application has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the application's technological scheme, and do not break away from the essence and the scope of present techniques scheme.
Claims (9)
1. hydroelectric power unit that is used for little head waterpower development, it is characterized in that: include a plurality of hydroelectric generators, hydroelectric generator comprises pipeline, the water turbine that is provided with the synchronous permanent-magnet generator in the pipeline and is connected with the synchronous permanent-magnet generator; The synchronous permanent-magnet generator is fixed in the pipeline through the fixed tube of a plurality of hollows, and an 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 that is used to wear synchronous permanent-magnet generator cable; The cable export is provided be incorporated into the power networks frequency variator and protection control apparatus, and synchronous permanent-magnet generator cable wears the cable export, also is electrically connected be incorporated into the power networks frequency variator and protection control apparatus respectively.
2. a kind of hydroelectric power unit that is used for little head waterpower development according to claim 1, it is characterized in that: the flow inlet of pipeline is provided with the horn-like manger board that joins with pipeline.
3. a kind of hydroelectric power unit that is used for little head waterpower development according to claim 1 is characterized in that: the runner of water turbine is set to the runner of the minute-pressure flow velocity type of spiral two blade types or spiral three blade types.
4. a kind of hydroelectric power unit that is used for little head waterpower development according to claim 3, it is characterized in that: the wheel hub of runner is the post taper.
5. a kind of hydroelectric power unit that is used for little head waterpower development according to claim 1, it is characterized in that: cable export place is provided with airtight installation room, and be incorporated into the power networks frequency variator and protection control apparatus all are positioned in the airtight installation room.
6. a kind of hydroelectric power unit that is used for little head waterpower development according to claim 1, it is characterized in that: the water export of pipeline is set to the tapering type water export of flaring.
7. a kind of hydroelectric power unit that is used for little head waterpower development according to claim 1, it is characterized in that: the flow inlet of pipeline and/or water export are provided with the gate that is used to cut off current.
8. according to any described a kind of hydroelectric power unit that is used for little head waterpower development of claim 1 to 7, it is characterized in that: a plurality of hydroelectric generators are the setting of vertically arranging, and interconnect through buoyancy tank respectively between a plurality of hydroelectric generator.
9. a kind of hydroelectric power unit that is used for little head waterpower development according to claim 8 is characterized in that: the pipeline outer wall of hydroelectric generator is provided with and is used for the anchor formula fixing device that is connected with adjacent hydroelectric generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN102828890A true CN102828890A (en) | 2012-12-19 |
| CN102828890B CN102828890B (en) | 2016-04-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319808A (en) * | 2014-10-23 | 2015-01-28 | 上海福思特流体机械有限公司 | Excess pressure using and recycling device |
| CN104879266A (en) * | 2015-04-22 | 2015-09-02 | 孟越峰 | Integrated intelligent total through-flow hydro-generator |
| CN106870261A (en) * | 2017-03-20 | 2017-06-20 | 江苏大学 | A kind of small-sized hydroelectric power generating apparatus generated electricity using sewer pipe sewage |
| CN109253036A (en) * | 2018-11-15 | 2019-01-22 | 湖南红太东方机电装备股份有限公司 | A kind of permanent-magnetic variable-frequency turbine-generator units |
| CN110661290A (en) * | 2019-09-19 | 2020-01-07 | 泰安阳光动力电机有限公司 | Low-water-head hydropower intelligent control system and method |
| CN111197549A (en) * | 2018-11-16 | 2020-05-26 | 杨明恭 | Water flow power generation device |
| CN114285192A (en) * | 2021-12-27 | 2022-04-05 | 福建华电电力工程有限公司 | Device and method for adjusting rotational inertia of main shaft of bulb tubular turbine |
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| CN104319808A (en) * | 2014-10-23 | 2015-01-28 | 上海福思特流体机械有限公司 | Excess pressure using and recycling device |
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| CN109253036A (en) * | 2018-11-15 | 2019-01-22 | 湖南红太东方机电装备股份有限公司 | A kind of permanent-magnetic variable-frequency turbine-generator units |
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| CN114285192A (en) * | 2021-12-27 | 2022-04-05 | 福建华电电力工程有限公司 | Device and method for adjusting rotational inertia of main shaft of bulb tubular turbine |
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