CN200999693Y

CN200999693Y - Micro-falling-head high efficiency waterpower power export machine

Info

Publication number: CN200999693Y
Application number: CNU2007200832499U
Authority: CN
Inventors: 李保春
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-18
Filing date: 2007-01-18
Publication date: 2008-01-02
Anticipated expiration: 2017-01-18

Abstract

The utility model relates to a high-efficiency slight fall hydraulic power output machine belonging to a hydraulic turbine, in particular to an energy output machine using slight water fall as kinetic energy, which removes far inadequate development of slight fall water resources, such as canal, rivulet and tail water of hydropower plant and the situation that no hydraulic turbine applicable to slight fall water resources is provided. Technic proposal of the utility model lies in that: Two rolling wheels are arranged on a central shaft in parallel. N blade shafts are fixed between two rolling wheels, along circumference of the rolling wheel and in parallel with the central shaft. Each blade shaft is provided with a blade. Inner sides of two rolling wheels are respectively fixed with a supporting shaft to support the blade. A pull cable and a spring are positioned between the blade and the central shaft. The utility model can realize water entry from an optimal immersion angle. Besides, the utility model has the advantages of simple structure, high economic efficiency, practicality and great promotional value, makes full use of slight fall water flows and effectively guarantees slight fall water resource development and utilization.

Description

The efficient hydraulic energy output of little drop machine

Technical field

The utility model relates to a kind of water turbine, relates to a kind of energy output machine that utilizes little drop of water as kinetic energy specifically.

Background technique

At present, utilize water generating, need cut-off dam making on rivers, height of dam is wanted 30 meters at least, therefore causes geology and ecological injury easily, simultaneously, because the structural restriction of hydroelectric generator, the generating of common low water head also requires to have certain head, and when utilizing little drop height water stream resource, traditional hydroelectric generator is then powerless; In China, little drop water resources, as irrigation canals and ditches, streams, the distribution of hydropower station tail water is very extensive, and at present, also not enough far away to the development and use of little drop water resources, also there is not a kind of water turbine that is applicable to little drop water resources.

Summary of the invention

The purpose of this utility model provides a kind of little drop of current that utilizes and carries out hydroelectric hydraulic energy output machine.

The technical solution of the utility model is: parallel at the central shaft two ends two runners are installed, between two runners, along N the sharf that is fixed with on the runner circumference with central axes, on each sharf, all be fixed with blade, two runner inboards are fixed with the back shaft of support blade, are fixed with slide fastener and spring between blade and the central shaft.

Said blade is a rectangular in the technical solutions of the utility model, and its long limit is fixed on the sharf by the connecting sleeve that is fixed on the sharf.

A said N sharf is 4～8 in the technical solutions of the utility model, is evenly distributed on the circumference of runner.

Said slide fastener and spring are connected in parallel in the technical solutions of the utility model, and an end is fixed on the central shaft, and the other end is fixed on the blade.

Said sharf and back shaft are located at blade minor face center line both sides respectively in the technical solutions of the utility model, and the distance between sharf and the central shaft is greater than the distance between back shaft and the central shaft.

The utility model can be automatically with the entry angle entry of the best, and simple in structure, economical and practical, the utility model can make full use of little drop height water stream, solves the waterpower development and the utilization of little drop water resources effectively.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structure for amplifying schematic representation of the utility model cross section among Fig. 1;

Fig. 3 is a fundamental diagram of the present utility model.

Embodiment

See also Fig. 1 and Fig. 2.Provided among Fig. 1 and utilized the utility model to drive the schematic representation that generator 11 generates electricity, the two ends of central shaft 3 are fixed on the bearing support 6 among Fig. 1, central shaft 3 connects with speed changer 9 by chain 8, speed changer 9 connects with generator 11 by axle 10, is generated electricity by the rotation drive generator 11 of central shaft 3; In central shaft 3 two ends secured in parallel two runners 1 are arranged, between two runners 1, along being fixed with N the sharf 7 parallel on two runners, 1 circumference with central shaft 3, have connecting sleeve 5 on the sharf 7, blade 2 is fixed on the connecting sleeve 5, blade 2 is a rectangular, its long limit is fixed on the connecting sleeve 5 on the sharf 7, make blade 2 and sharf 7, and 1 one-tenth of runner is as a whole; N sharf 7 and blade 2 are 4～8, and drawn among the figure 6 sharfs 7 and blade 2 are evenly distributed on the circumference of runner 1; Be fixed with the back shaft 4 of support blade 2 in the inboard of two runners 1, back shaft 4 is connected with the minor face of blade 2, and sharf 7 and back shaft 4 are in blade 2 minor face center line both sides, and back shaft 4 is located at the inboard of blade 2, promptly, blade 2 is located by sharf 7 and back shaft 4 by a side of central shaft 3.Sharf 7 and the particular location of back shaft 4 on blade 2 are: in the counterclockwise direction, sharf 7 is preceding, back shaft 4 after, distance between sharf 7 and the central shaft 3 is greater than the distance between back shaft 4 and the central shaft 3, make blade 2 certain included angle be arranged for horizontal plane, be the immersion angle of blade 2, as shown in Figure 2.When blade 2 entry, can stop the rotation of blade 2 clockwise directions by back shaft 4 support blades 2, under the impact of current, blade 2 can only rotate in the counterclockwise direction; Between blade 2 and central shaft 3, be fixed with slide fastener 12 and spring 13, slide fastener 12 and spring 13 are connected in parallel, one end is fixed on the central shaft 3, the other end is fixed on the blade 2 by on back shaft 4 one sides, when blade 2 bears the current maximum impact force, slide fastener 12 and spring 13 are by stretching fully, therefore can overcome the impact force that blade 2 produces in umklapp process, so that blade 2 forms best angle of water, simultaneously, slide fastener 12 and spring 13 can also guarantee that blade 2 can enter sub aqua sport with best immersion angle automatically; When rotating under the impact of blade 2 at water, to drive sharf 7 rotates, sharf 7 drives runner 1 and rotates, when runner 1 rotates, stop blade 2 clockwise direction under the effect of gravitational difference to rotate by back shaft 4, thereby guarantee that runner rotates in the counterclockwise direction, runner 1 drives central shaft 3 and rotates, and, satisfy the requirement of generator 11 rotating speeds by after speed changer 9 speed changes, generator 11 is generated electricity.

Working principle: see also Fig. 2 and Fig. 3.After blade 2A is with immersion angle β entry, under back shaft 4 and water flow impact pressure F0 effect, blade 2A will be rotated counterclockwise, and force runner 1 to rotate counterclockwise.Because all blades are distributed in a week, so in rotation process, each blade all can repeat identical process.When blade 2A entry campaign, blade 2B utilizes the impact force of water flow motion and is dipped in fully in the water, forms the moment to central shaft 3 simultaneously, increased the moment of torsion of blade to central shaft 3, strengthened the thrust that makes the water turbine rotation, at this moment, blade 2C has gone to and the about 1 degree angle position of horizontal plane.Move to horizontal plane to become before the 90 degree angles turn over the angle that becomes 0 degree with horizontal plane as blade 2C after, the slide fastener 12 at spring 13 two ends is straightened.Allow in the limit of stretch value in maximum, when impact force reaches maximum value, spring 13 and be connected in parallel on slide fastener 12 on the spring 13 part that is not stretched and all be straightened fully, thereby it is the longest when having guaranteed blade 2C upset to the acting force arm of central shaft 3, overcome in umklapp process blade 2C simultaneously and become when long-armed the powerful impact of slide fastener 12, solved the impact that when water turbine power increases suddenly load is produced by galianconism.When blade 2C moves to the horizontal plane vertical position, current are to the percussion area maximum of blade 2C, blade 2C has utilized the impact force of bottom water fully, the effect power arm of blade 2C becomes from the bottom to the length of central shaft 3 positions, make driving torque increase, strengthened the water turbine rotary thrust.When blade when the C position moves to the D position, the unemployed current that stream comes between blade 2A and the blade 2B will produce percussion to blade, make blade 2D still can promote the runner rotation, simultaneously, spring 13 and slide fastener 12 have guaranteed that jointly blade 2D can not consume the useful work that other blades are done, and can also increase moment of torsion to central shaft 3, and change according to the variation of water turbine load, angle when finding out maximum power and minimum power has automatically formed the best angle of water to blade 2D resistance minimum; When going to the position of E after the blade water outlet, under the effect of weight difference and back shaft 4, make its relative runner 1 static, and get ready for forming best immersion angle; When reaching the F position, the angle adjusted finishes and performs entry and prepares, and runner is socialized to rotate to one of F position from the A position and finished, and will produce new circulation.In each cycle rotation process, underwater portion is power spare fully, and blade can be ignored with the suffered resistance in top at the water surface.

Claims

1, the efficient hydraulic energy output of a kind of little drop machine, it is characterized in that parallel two runners (1) that are equipped with at central shaft (3) two ends, between two runners (1), along being fixed with N the sharf (7) parallel on runner (1) circumference with central shaft (3), on each sharf (7), all be fixed with blade (2), two runners (1) inboard is fixed with the back shaft (4) of support blade (2), is fixed with slide fastener (12) and spring (13) between blade (2) and the central shaft (3).

2, the efficient hydraulic energy output of little drop according to claim 1 machine is characterized in that said blade (2) is rectangular, and its long limit is fixed on the sharf (7) by the connecting sleeve (5) that is fixed on the sharf (7).

3, the efficient hydraulic energy output of little drop according to claim 1 machine is characterized in that a said N sharf (7) is 4～8, is evenly distributed on the circumference of runner (1).

4, the efficient hydraulic energy output of little drop according to claim 1 machine is characterized in that said slide fastener (12) and spring (13) are connected in parallel, and an end is fixed on the central shaft (3), and the other end is fixed on the blade (2).

5, according to claim 1, the efficient hydraulic energy output of 2 or 3 described little drops machine, it is characterized in that said sharf (7) and back shaft (4) are located at blade (2) minor face center line both sides respectively, the distance between sharf (7) and the central shaft (3) is greater than the distance between back shaft (4) and the central shaft (3).