CN2308720Y

CN2308720Y - Opening groove verticle thorough flow hydraulic turbine

Info

Publication number: CN2308720Y
Application number: CN96218677U
Authority: CN
Inventors: 刘尚智; 刘思
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-14
Filing date: 1996-08-14
Publication date: 1999-02-24
Anticipated expiration: 2006-08-14

Abstract

The utility model relates to an opening groove vertical thorough flow hydraulic turbine, which is composed of a distributor, a rotary wheel, a main shaft, a basin-shaped water inlet pipe and a fixed body. The hydraulic turbine main shaft is changed into a vertical position from the horizontal position; the water is fetched from an opening groove by a basin-shaped water inlet pipe; the hydraulic turbine main shaft extends upward from the basin-shaped water inlet pipe to be connected with a generator shaft arranged above the opening groove. Compared with the existing axial flow hydraulic turbine, the efficiency and the output can be improved. Compared with the existing shaft extension type thorough flow hydraulic turbine, the structure of the utility model can be simplified. The utility model has the advantages of convenient installation, inspection and maintenance. The utility model reduces the civil engineering cost of the factory building and improves the stability of the factory building.

Description

The vertical cross-flow water turbine of open channel

The utility model relates to the vertical cross-flow water turbine of a kind of open channel, belongs to hydro-electric power generating equipment, is mainly used in the low water head small hydropower station.

The water turbine that existing low water head small hydropower station is adopted has two kinds.One is that axial flow hydraulic turbine is seen Fig. 3, current through open channel 3 radially water distributor 14 enter, transfer to more axially by runner 15, promote runner together with hydraulic turbine main shaft 16 rotations, and drive generator shaft 17 generatings, the current work done after draft tube 18 discharge.The effect of water distributor is current rotations to be produced remake after the circular rector to be used for runner, utilizes the purpose that water can work done as far as possible fully to reach.Its deficiency is: the water inlet condition has some setbacks, and circular rector forms insufficient, and working efficiency (waterpower utilization rate) is lower, conveyance capacity, exert oneself and rotating speed lower.It two sees Fig. 4 for axle extend through flow type hydraulic turbine, water turbine and generator are all horizontally-arranged, hydraulic turbine main shaft 19 passes with generator 21 from draft tube 20 and links to each other, current from intake pipe 22 behind cone guide vane 23, by runner 24, current after the work done flow out through S shape draft tube 25 again, and the overall process of flow approaches straight line.Its deficiency is: the structure more complicated; It is horizontal that main shaft is, and makes troubles for installation, maintenance and maintenance; Because whole unit mounting point is lower, the space that horizontal layout occupies is big again, has increased the expenditure of construction of factory building; When the downstream water position changed (water level rising) greatly, factory building was just like pontoon, and stability is subjected to very big influence.

The purpose of this utility model is to overcome above-mentioned deficiency of the prior art and the vertical cross-flow water turbine of open channel that provides that a kind of relatively simple for structure, installation and maintenance are convenient, performance is better and mill-type construction and stability are all made moderate progress.

The purpose of this utility model can reach by following measure: the utility model is made up of water distributor, runner, hydraulic turbine main shaft, peviform intake pipe and the fixed body of tubular turbine, hydraulic turbine main shaft is by the horizontally-arranged vertically-arranged that changes into, fetch water from open channel with the peviform intake pipe, hydraulic turbine main shaft is stretched from peviform intake pipe central authorities, is connected with the generator shaft that is arranged in the open channel top.

The drawing of accompanying drawing is described as follows:

Fig. 1 is total figure of the present utility model;

Fig. 2 is for being equipped with factory building layout plan of the present utility model;

Fig. 3 is the factory building layout plan that axial flow hydraulic turbine is housed;

Fig. 4 is the factory building layout plan that axle extend through flow type hydraulic turbine is housed.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing: referring to Fig. 1 and Fig. 2, hydraulic turbine main shaft 1 is vertical layout, is connected with the generator shaft 2 of open channel 3 tops.Open channel central authorities in the hydraulic turbine main shaft periphery establish peviform intake pipe 4, and the peviform intake pipe big taper for down little, and there is into water week the upper end along 5, the loss when entering to improve the water inlet fluidised form, to reduce current.Flange plate with holes 6 is arranged at peviform intake pipe bottom, and being fixed by bolt fastener is connected on the ground.Peviform intake pipe below has diffuser 7, diffuser inner chamber that the stator 9 of water distributor 8 is arranged, and stator the inner is connected on the fixed body 10.Bearing and bearing support (not shown on the figure) are arranged in the fixed body, and hydraulic turbine main shaft passes fixed body and bearing hole, and stretches out from the fixed body lower end, and the hydraulic turbine main shaft lower end is connected with runner 11.Runner is with runner envelope 12 outward, and runner envelope is connected with diffuser, and the runner envelope bottom is connected with draft tube 13.

During work, the upper waters open channel 3 of flowing through, and around the peviform intake pipe, plough under, form circular rectors through stator 9, drive runner 11 rotations, and drive generator for electricity generation by hydraulic turbine main shaft, the current after the work done are discharged through draft tube 13.

The utility model contrast prior art has following advantage: hydraulic turbine main shaft of the present utility model adopts Vertical structure has improved the arrangement condition of generator and operating mechanism, makes unit convenient for installation and maintenance; Electricity The construction investment of standing reduces. Compare with existing axial flow hydraulic turbine, can improve operational efficiency and exert oneself; With existing Have tubular turbine to compare, kept this engine efficiency height, inflow-rate of water turbine is big and the big plurality of advantages of exerting oneself Under the prerequisite, can simplify set structure, greatly facilitate the installation and maintenance of unit, civil engineering costs reduces, And by changing the position of generator and operating mechanism, improve the stability of factory building.

Claims

1, the vertical cross-flow water turbine of a kind of open channel, the water distributor and the runner that comprise tubular turbine, it is characterized in that, form by main shaft, peviform intake pipe and fixed body, main shaft is by the horizontally-arranged vertically-arranged that changes into, fetch water from open channel with the peviform intake pipe, main shaft is stretched from peviform intake pipe central authorities, is connected with the generator shaft that is arranged in the open channel top.

2, the vertical cross-flow water turbine of open channel according to claim 1 is characterized in that, there are all edges peviform intake pipe upper end, and peviform intake pipe inner chamber is the little down big cone that.

3, the vertical cross-flow water turbine of open channel according to claim 1 is characterized in that, bearing and auxilliary bearing are arranged in the fixed body, and hydraulic turbine main shaft passes fixed body and bearing hole, and stretches out from the fixed body lower end.