A kind of waterwheel shape washdown type turbine-generator units
Technical field
The invention belongs to water power technical field of power generation, be specially technical field of hydraulic generators.
Background technique
The world today, along with the fast development of economy, the demand of various countries to electric energy is more and more higher.Water-energy generating electricity is one of major way of electric power supply always, adopts environmental protection mode to develop the hydraulic power potentials of rivers, is one of Main way of future electrical energy development.Traditional water-energy generating electricity pattern, must flood a large amount of soil, bring out geological disaster, causes serious ecological failure, and produces a large amount of immigrant.And, traditional low head hydropower station is substantially all adopt tubular turbine, hydraulic pressure is relied on to impact the same turbine impeller of similar blade of electric fan with flow velocity, current are not fling blade, but on blade, produce the rotation of transverse component drive runner, waterpower utilization rate is lower, and power benefit is not high.Chinese patent application 201410485280.X discloses a kind of Waterwheel-type electricity generating device, also has in addition a kind of " perpendicular leaf water wheel generating set ", can utilize water-energy generating electricity under the condition of not welding.First, the basicusing mode of this device is placed in by electricity generating device natural or manually constructs in the river course of drainage, water impact Watermill blade is just utilized to rotate simply thus the generating of drive electrical generators group, the impeller of waterwheel is side open type, the current impacted on impeller run off from impeller side in a large number, can only utilize the impulse force that current are very limited, very lowly even substantially do not have the potential energy utilization ratio of water body, electricity generation efficiency is limited; Secondly, due to the essence of its " device ", determine this type of electricity generating device and be difficult to produce scale effect, the important way of electrical production can not be become; 3rd, due to this electricity generating device be placed in streams, when flow, water level, flow velocity and wave constantly change, waterwheel rotation speed change is indefinite, and the electricity sent is uncontrollable, and the frequency of electric current is unstable, can cause damage to electric equipment; 4th, this kind of electricity generating device is very little, is laid in river course, streams, and the ability of resisting flood is poor.
Summary of the invention
Object of the present invention just in order to solve the deficiencies in the prior art, provide a kind of can efficiency utilization water energy, waterwheel shape washdown type turbine-generator units that generating efficiency is high.This generator set is mainly applicable to the water power plant compared with low water head.
Object of the present invention is achieved through the following technical solutions.
A kind of waterwheel shape washdown type turbine-generator units, include can centrally axis of rotation metal waterwheel, current are introduced the metal water recessing on metal water Propeller Blade impeller blade, the transmission case being connected in metal waterwheel central rotating shaft outer end, the heavy-duty generator group being connected in transmission case output shaft two ends respectively by coupling and small-capacity generator group.
Metal waterwheel of the present invention includes the identical and parallel disc side former of two pieces of being set on central rotating shaft, to be arranged between two pieces of side formers and connect the ring shape roll bending of two pieces of side formers, ring dividing plate that root is connected to one group of radial direction on ring shape roll bending, both sides are connected with adjacent circular radial toroidal membrane and root is connected to the blade be radially evenly arranged on ring shape roll bending, the blade stagger in adjacent radial baffle space is arranged.Described metal water recessing includes the cell body be made up of two lateral retaining plates and backboard, and metal waterwheel bottom is placed in cell body by the side, below of flow action; The water intake introduced by current in cell body is offered in the bottom of backboard, be provided with downward-sloping and the upper guide plate closed up gradually and lower guide plate from water intake to the position pressing close to waterwheel impeller in cell body, one group of guide plate reduced gradually to waterexit end height from water intake is provided with between upper guide plate and lower guide plate, a water orifice is formed between two pieces of often adjacent guide plates, each water orifice is configured with gate respectively, the waterexit end of cell body be provided with tail stick up formula before guide plate, the end of front guide plate presses close to waterwheel impeller; Offer bearing saddle bore at two lateral retaining plate tops, the bearing at metal waterwheel central rotating shaft two ends is installed in bearing saddle bore, inside cell body two lateral retaining plate oblique and backboard upper horizontal to, be also provided with sealing metal lath.Water orifice subtend metal water swing over compound rest between metal water recessing guide plate is to the space between dividing plate.Speed increaser is respectively arranged with between coupling and heavy-duty generator group and between coupling and small-capacity generator group.
Do not run off in the ring lateral retaining plate that metal waterwheel of the present invention is arranged, ring demarcation strip, interior roll bending and blade current can be made to concentrate on some impeller lattice that their form, guarantee water flow pressure.Blade stagger in adjacent radial baffle space is arranged, can balanced water flow impact pressure, waterwheel is rotated more stable.After set metal water recessing can make current increase flow velocity by tapering type spout, direct impact waterwheel impeller, make that waterwheel to obtain more than traditional impeller type turbine more directly, more powerful moment of torsion and then rotation, the waterwheel rotated or by transmission device or direct connection generator, and then realize efficiency power generation.Metal water recessing of the present invention can substantially be stopped side on the one hand and leak, and the current introduced are imported metal waterwheel impeller; Waterwheel impeller side also can not leak, and can ensure enough hydraulic pressure, improves water power calculation efficiency; Three baffle plates of metal water recessing are also provided with metal sealing bar, current can be prevented to run off in a large number from the gap between waterwheel groove and waterwheel runner, improve waterpower utilization rate; Can ensure that waterwheel runs on the other hand more stable, be beneficial to waterwheel and install and high-precision rotary operation.The water inlet of metal water recessing is divided into multiple water orifice, can according to water flow size adjustment generating capacity.When wet season, water flow was large, open whole gate, current enter the whole blades impacting waterwheel from whole water orifice, drive all generator set to run generating; When the period when a river is at its normal level, flow was larger, open middle water spray port strobe, increase unlatching one side gate or and the part of both sides water orifice gate, drive jumbo unit operation generating; Dry season, water flow hour, only opened intermediate gate, and current impact blade in the middle part of waterwheel from middle water orifice, drove small-capacity generator group.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention is generated electricity by transmission device;
Fig. 2 is the elevation of Fig. 1;
Fig. 3 is the schematic diagram of direct connection of the present invention generating;
Fig. 4 is the radial section figure of metal waterwheel;
Fig. 5 is the structural representation of metal water recessing;
Fig. 6 is the schematic perspective view that metal waterwheel and metal water recessing are equipped with;
Fig. 7 is the floor map that metal waterwheel and metal water recessing are equipped with;
Fig. 8 is power generation process schematic diagram of the present invention.
Embodiment
As shown in Figure 1 and Figure 2 by the waterwheel shape washdown type turbine-generator units that transmission device generates electricity, include can centrally rotating shaft 1a rotate metal waterwheel 1, current introduced on metal waterwheel runner bucket, ensure the metal water recessing 2 of enough hydraulic pressure, be connected in the transmission case 3 of metal waterwheel central rotating shaft outer end, the heavy-duty generator group 5 being connected in transmission case output shaft two ends respectively by coupling 4 and small-capacity generator group 6.Figure 3 shows that the direct connection generation mode of metal waterwheel direct connection generator set.As shown in Fig. 4, Fig. 6, Fig. 7, described metal waterwheel includes the identical and parallel disc side former 1b of two pieces of being set on central rotating shaft 1a, to be arranged between two pieces of side formers and connect the ring shape roll bending 1c of two pieces of side formers, ring dividing plate 1d that root is connected to one group of radial direction on ring shape roll bending, both sides are connected with adjacent circular radial toroidal membrane and root is connected to the blade 1e be radially evenly arranged on ring shape roll bending, the blade stagger in adjacent radial baffle space is arranged.As shown in Fig. 5, Fig. 6, Fig. 7, described metal water recessing 2 includes the cell body be made up of two lateral retaining plate 2a, backboard 2b and water orifice 2g, and metal waterwheel bottom is placed in cell body by flow action one; The water intake 2c introduced by current in cell body is offered in the bottom of backboard, be provided with the downward-sloping and upper guide plate 2d closed up gradually and lower guide plate 2e from water intake to the position pressing close to waterwheel impeller in cell body, between upper guide plate and lower guide plate, be provided with one group of guide plate 2f reduced gradually from water intake to waterexit end height, between two pieces of often adjacent guide plates, form a water orifice 2g.Water intake can be divided into two or three above water orifices, to adapt to the efficiency power generation needs in different flow situation.Each water orifice is configured with gate 2h respectively, the waterexit end of cell body be provided with tail stick up formula before guide plate 2i, the end of front guide plate 2i presses close to waterwheel impeller; Offer bearing support 2j at two lateral retaining plate 2a tops, the bearing at metal waterwheel central rotating shaft 1a two ends is installed in bearing support 2j; Bearing outer is provided with waterproof seal; Inside two lateral retaining plates in waterwheel cell body oblique and backboard upper horizontal to, be also provided with the sealing metal lath 2k reducing current seepage, ensure water flow pressure, isolation bearing bore and current.Water orifice subtend metal water swing over compound rest between metal water recessing guide plate is to the space between dividing plate.Metal water swing over compound rest can identical and one_to_one corresponding to the space between dividing plate and the water orifice quantity between metal water recessing guide plate, also can be different, such as, space between a radial dividing plate of water orifice subtend two lattice.Between coupling 4 and heavy-duty generator group 5 and between coupling and small-capacity generator group 6, be respectively arranged with speed increaser 7, ensure that generator obtains the rated speed of design, guarantee power quality.
As shown in Fig. 1, Fig. 8, generator set of the present invention is placed in factory building 9, metal waterwheel 1 is placed in waterwheel canal 8.Between the approach channel 10 built and the water intake of metal water recessing 2, be connected intake tunnel 12, intake tunnel arranges sluice 11.Open sluice, current 13 enter the water intake of metal water recessing and pour the blade of metal waterwheel from each water orifice respectively, and under huge water flow pressure and impulse force, metal waterwheel rotates, and are driven or directly drive electrical generators group generating by transmission device.When wet season water flow is very large, connect two coupling, open whole gates of water orifice, current enter from all water orifices and impact metal waterwheel by wiper blade, and can drive whole generator set, now generated energy reaches maximum; When the period when a river is at its normal level, flow reduced, the generator coupling of disconnection small capacity, connects jumbo generator coupling, opens the part that intermediate gate also increases by one or the whole gate opening other gates, runs heavy-duty generator group and generate electricity; When dry season, water flow was minimum, disconnect the coupling of heavy-duty generator group, connect the coupling of small-load generators, only open the gate of middle water spray mouth, current enter from middle water orifice and impact blade in the middle part of waterwheel, run small-capacity generator group.