JPS6343410Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a water turbine device for small hydroelectric power generation installed in an open channel or the like.

Electricity is generally used as a driving source for gates, dust removers, and other machinery installed in waterways, etc. In areas where this electricity supply is not available, a generator powered by a water turbine is installed to obtain the necessary electricity. It is being considered. In order to ensure that the torque generated by the turbine is always constant even when the water level in the waterway fluctuates, two floats that can be moved up and down, respectively, are placed at a predetermined interval along guides installed in the waterway. A water wheel shaft spanned between the floats is supported on the floats via bearings. (Refer to Utility Model Application Publication No. 58-29175).

However, there are problems with structural stability, and there are difficulties in assembly and installation work on the waterway, which not only increases civil engineering costs, but also lengthens the construction period and, in some cases, requires damming the waterway. Sometimes you have to do it.

This idea was created in view of the above-mentioned circumstances, and it allows two water turbines to be used differently depending on changes in water volume, and it can be easily transported to the site after being assembled at the factory. The purpose is to obtain a compact water turbine device that can be installed.

That is, in the water turbine device according to this invention, two water turbines having different widths in the axial direction are mounted on a support girder between the right and left side wall rectifier plates, and a section rectifier is provided between the two water turbines parallel to the both side wall rectifier plates. At the same time, a flow guide floor plate is arranged at the bottom between the flow straightening plates on both sides, and a flow diverter plate is attached to the upstream edge of the compartment flow straightening plate so as to be rotatable through a vertical axis, and each water turbine shaft is It is characterized in that the rotation of the engine is transmitted to the generator via a switchable transmission system.

In the water turbine device according to this invention, flowing water can be selectively guided to one or both water turbines by operating the flow divider plate, and the water turbine can be selected and operated according to the amount of water or the amount of electricity required, and at the same time. The optimum power generation can be obtained by selecting the transmission system by switching the clutch, etc. When only one water turbine is operated, the other water turbine is stopped. In addition, the interval between the side wall straightening plates is made narrower than the waterway width, and a spillway is formed between at least one sidewall straightening plate and the waterway side wall, and the front edge of the one sidewall straightening plate is By providing a seepage plate whose upper edge coincides with the highest water level between the waterway side wall and the waterway side wall to form a spillway overflow section, the water turbine can be operated in a normal state even during a flood.

Hereinafter, embodiments of this invention will be described in detail with reference to the drawings.

In the drawing, 1 is an open channel embankment or river embankment, 2
3 and 4 are water turbines, 5 and 6 are water turbine shafts, 7 is a water turbine support girder constituted by a framework, and 8 and 9 are bearings.
The water turbines 3 and 4 are designed to have different widths in the axial direction, and the shaft 5 of one water wheel protrudes through the hollow water shaft 6 of the other water turbine 4, and its shaft end 5A is inserted through a bearing 10. It is pivotally supported by the support girder 7. Also,
The water turbines 3 and 4 have the same structure, and have circular side plates 3A and 4A connected by inner cylinders 3B and 4B arranged concentrically with the water wheel shafts 5 and 6, respectively.
Both ends of a large number of blades 3C, 4C are fixed to opposing surfaces of side plates 3A, 4A at a predetermined distance S from radially outward from 4B. The shape of these blades 3C and 4C is a curved plate shape with a cylindrical surface obtained by cutting a pipe or cylindrical body with a predetermined radius parallel to its axis, and a large number of blades can be obtained from a pipe with the same length as the width of the water wheel. , bending, etc. are not required. The curved concave portions of the blades 3C and 4C receive the water flow, and the line segment connecting the inner edges and the outer circumferential edge, that is, the chord G, is located on the straight line L passing through the water turbine axis. installed on.

The water turbine support girder 7 has a framework structure so as to be mounted on the upper end surface of the river bank, and a side wall rectifier plate 11 is provided at a predetermined interval near the river bank side wall 1A on the water turbine 3 side.
is suspended, and a side plate 12 is suspended adjacent to the river bank side wall 1A, and a side wall rectifier plate 13 is suspended adjacent to the river bank side wall 1B of the water turbine 4. . And both side wall rectifying plates 1
A flow guide floor plate 14 is provided between both water turbines 3 and 4, and a compartment flow rectifier plate 15 is provided between both water turbines 3 and 4.
The front end edge of the partition baffle plate 15 is extended upstream from the water turbines 3 and 4 to be parallel to the baffle plate 1.
6 is vertically mounted via a vertical rotation shaft 17. The length of this flow divider plate 16 is made longer than the width of the larger water turbine 3, the lower edge is close to the horizontal part of the flow guide floor plate 14, and the upper edge is located above the normal water level. The water flow to both water turbines 3 and 4 can be cut off, and the rotation of one of the water turbines can be stopped. Further, the other end of a lever 22 is fixed to the upper end of the vertical rotation shaft 17, and one end of the lever 22 is connected to a piston rod end 21 of a power cylinder 20, which is attached to the water wheel support girder 7 via a vertical pin 18 and a bracket 19. has been done.

A coarse screen 23 is provided between the upstream ends of the both side wall rectifying plates 11 and 13 from the upstream side horizontal member 7A of the water turbine support girder 7 to the front end of the flow guide floor plate 14, and further between the downstream ends, Downstream horizontal member 7B
A super-coarse screen 24 is provided from the flow guide plate 14 to the downstream end of the flow guide floor plate 14. And the side plate 12
A flow blocking plate 25 whose upper end is located at approximately the normal water level is provided between the upstream ends of the side wall rectifying plate 13 and in contact with the channel bed 2, and this upper edge serves as the spillway overflow edge 25A. A screen 26 is provided between the upper upstream horizontal members 7A. Therefore, the spillway 2 is located between the side plate 12 and the wall rectifier plate 13.
It has become 7.

Note that between the flow guide floor plate 14 and the channel bed 2, a dam 28 is provided in parallel with the side wall rectifier plates 11 and 13.

Drive gears 28 and 29 are wedged to each of the water wheel shafts 5 and 6, and a driven gear 3 is connected to the drive shaft of a generator 30 via a speed increaser 31 and switching clutches 32 and 33.
4, 35 are installed, and a timing belt 3 is installed between the drive gears 28, 29 and the driven gears 34, 35.
6,37 are wrapped around it.

A floor plate 38 for dust prevention and security is laid on the water turbine upstream side of the water turbine support girder 7, and a fence 39 is provided so as to surround the water turbines 3 and 4.

According to the embodiment of this invention, as shown in FIG. 3's drive system has been severed. In addition, the flow divider plate 16 is 11 as shown in FIG.
When the water wheel 4 side channel is blocked by rotating it to the position shown by 6, the water wheel 4 stops and only the water wheel 3 can be rotated.Furthermore, when the flow dividing plate 16 is made parallel to the compartment rectifying plate 15, both water turbines 3 and 4 are rotated. can be rotated. Depending on the stop position of the flow divider plate 16, the amount of water flowing into the water turbines 3 and 4 can be adjusted to respond to changes in flow rate, and when the flow water level rises above a predetermined water level, excess water flows between the inner cylinder 3B and the blade 3C. The water flows through the water, and no extra force acts on the water turbines 3 and 4. On the other hand, when the water level rises above the predetermined water level, the spillway overflow edge 25
It flows out from A and flows downstream of the water turbine through the spillway 27.

This water turbine device is manufactured and assembled into a completed product at a factory, transported as is to the installation site by truck, etc., lifted by a truck or crane, etc., and installed in the waterway, and the water turbine support girder 7 is installed on the river bank 1. It may be fixed using a fixed anchor bolt 40.

Since the water turbine device for small hydroelectric power generation according to this invention has the above-described configuration, it is possible to selectively operate two water turbines in accordance with a predetermined amount of electric power, and to adjust the flow rate using a flow dividing plate. It is easy to manufacture and assemble, and is compact, so it can be packaged.
It can be transported as assembled at the factory and installed in a waterway by simply placing it on the river bank. Because it is a natural product, it can be obtained at low cost, and it has many effects, such as increasing the efficiency of the water wheel and making effective use of running water, and avoiding the effects of backwater.

Additionally, floods can be dealt with by constructing a spillway.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is a partially omitted plan view, FIG. 2 is a front view, and FIG. 3 is a partially cutaway side view. 3, 4...Waterwheel, 5,6...Waterwheel shaft, 7...Waterwheel support girder, 8,9,10...Bearing, 11,13...
Side wall rectifier plate, 14...Direction floor plate, 15...Division rectifier plate, 16...Diversion plate, 17...Vertical rotation axis, 2
8, 29... Drive gear, 30... Generator, 31...
...speed increaser, 32, 33... clutch, 34, 35
...Driver gear, 36, 37...Timing belt.

Claims (1)

[Scope of utility model registration request] Between the left and right side wall rectifier plates, there are two panels with different widths in the axial direction.
Two water turbines are axially mounted on a support girder, and between both water turbines, a partition rectifying plate is arranged parallel to the above-mentioned both side wall rectifying plates, and a flow guide floor plate is arranged at the bottom between the both side wall rectifying plates. A small vessel characterized in that a flow divider plate is rotatably attached to the upstream edge of the flow straightening plate via a vertical shaft, and the rotation of each water turbine shaft is transmitted to the generator via a switchable transmission system. Water turbine device for hydroelectric power generation.