JPH023038B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cross-flow water turbine power generation device that generates power by utilizing the flow of water while submerged in water.

(Prior Art) As a power generation device that directly utilizes flowing water from a river, etc., a lower cast water wheel or a tubular turbine has been used.

Furthermore, regarding cross-flow water turbines, the applicant filed a patent application No. 61-46223 for one in which the impellers are arranged vertically.
This was proposed in Japanese Patent Application Laid-open No. 62-206273.

(Problems to be Solved by the Invention) Examples of the above-mentioned conventional power generation devices that directly utilize running water from rivers and the like include the above-mentioned undershot water wheel and tubular turbine. In addition, in a cross-flow turbine, the impeller is arranged vertically, so
There were problems in that it was difficult to use in shallow rivers, and it was difficult to effectively utilize the position of the maximum flow velocity of the river flow.

(Means for Solving the Problems) The present invention is intended to solve these problems, and has a cross-flow turbine with a vortex on the upstream side of the turbine chamber, and a cross-flow turbine on the downstream side of the turbine chamber. The impeller is installed horizontally within the casing, which has a bulge-shaped outflow chamber on the side and is formed to obtain maximum efficiency. hang parallel to the
It is an object of the present invention to provide a cross-flow water turbine power generation device that can be operated by being submerged in water at a point where the flow rate is maximum.

(Function) In the present invention, as described above, the shape of the horizontal casing is such that a spiral chamber similar to a conventional cross-flow turbine is provided at the inlet, and a convexly shaped outflow chamber is provided at the outlet. This allows the water to flow out smoothly and maximize efficiency, and this has been confirmed in experiments.

In addition, the impeller of the cross-flow turbine is arranged horizontally within the water turbine casing, and the water turbine casing is suspended above the water surface via a parallel link mechanism, so that the water turbine casing can be used in shallow rivers, etc. Moreover, it can be operated submerged in the highest velocity part of running water such as a river.
Furthermore, the parallel link allows the turbine casing to always be positioned parallel to the flowing water along the flow, thereby increasing the power generation capacity.

(Example) An example of the present invention shown in the drawings will be described below.

In FIG. 1, 11 is a casing of a cross-flow water turbine, 12 is a horizontal rotary output shaft rotatably mounted on a water turbine chamber 15 of the water turbine casing 11, and a horizontal impeller 13 is attached to the output shaft 12. This constitutes a water wheel.

The water turbine casing 11 has an inlet 1 at both ends.
4A and an outflow port 14B, and a spiral chamber 14C whose cross section gradually decreases as it reaches the impeller 13 is formed on the water introduction port 11A side.

Further, on the outflow port 14B side, an outflow chamber 14D having a bulging shape is formed immediately downstream of the impeller 13.

Note that the impeller 13 is made of light metal, plastic, or the like.

Further, the outer surface of the casing 11 has a smooth shape to reduce resistance to flowing water.

The water turbine casing 11 is attached to a pin 4 on a float 1 floating on the water surface, which is moored by a rope 3.
It is suspended via a pin 4' on a pair of parallel links 5 connected via a pin 4'.

A water flow stabilizing plate 2 is attached to the float 1, and the water turbine casing 1 is always aligned in the water flow direction.
1 is directed toward the inlet port 14A.

Further, the water turbine casing 11 has a structure with buoyancy, and the volume ratio of the water turbine and the water turbine unit 7 constituting the generator is 1:1.1 to 1:1.5 based on the specific gravity of water.
The weight should be set to be a little heavier than usual, and the weight should be such that it always sinks quietly in the water. Therefore, the float 1 can be easily adjusted to the maximum flow velocity position using the jacking device 6.

The water turbine casing 11 and float 1 of this device are constructed of a metal hollow structure or foamed polystyrene.

FIG. 2 shows a spiral chamber 14C formed on the upstream side of the water turbine chamber 15 of the water turbine casing shown in FIG.
A vertical cross-sectional view showing an optimal shape of an outflow chamber 14D formed on the downstream side is shown.

3 and 4 show a cross-flow water turbine power generation device using a cross-flow water turbine having the water turbine casing 11 shown in FIG.
is attached to the side surface of the water turbine casing 11 as a submerged type.

Figures 5 and 6 show the cross-flow power generation device suspended via a parallel link 5 from a mounting beam 21 constructed between the left bank 22 and the right bank 23 so that it can be installed in a narrow river such as an open channel. It was submerged at the optimal depth using a jacking device.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various designs without departing from the spirit of the present invention. .

(Effects of the Invention) According to the present invention, as described above, since the swirl chamber is provided on the upstream side of the water turbine chamber in the cross-flow turbine casing, and the outflow chamber having a bulging shape is provided on the downstream side, the outflow chamber Maximum efficiency is achieved by ensuring smooth outflow of water.

In addition, since the impeller is arranged horizontally inside the water turbine casing, it can be submerged even in shallow rivers, etc., and the impeller can be effectively expanded in the width direction of the river, etc., so it can generate high output power. You can gain power.

Furthermore, since the water turbine casing is suspended above the water surface via a parallel link mechanism, it can be positioned at the highest flow rate of flowing water such as a river, and the water turbine casing is always connected to flowing water via the parallel link. Together with the parallel positioning, power generation capacity can be increased.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing an embodiment of a cross-flow turbine power generation device according to the present invention, FIG. 2 is a longitudinal cross-sectional view showing details of a water turbine casing, and FIG. A side view showing another embodiment of the water turbine power generation device, FIG. 4 is a front view thereof, FIG. 5 is a side view showing still another embodiment of the cross flow water turbine power generation device according to the present invention, and FIG. FIG. 1... Float, 5... Link, 7... Power generation unit, 11... Water turbine casing, 12... Rotating output shaft,
13... Impeller, 14A... Inlet, 14B... Outlet, 14C... Water turbine casing spiral chamber, 14D... Water turbine casing outlet chamber, 15... Water turbine chamber, 21... Mounting beam.

Claims (1)

[Claims] 1. A cross-flow turbine casing, which has a vortex chamber on the upstream side of the turbine chamber in which the impeller is arranged horizontally, and a bulging-shaped outflow chamber on the downstream side, is connected from above the water surface via a parallel link mechanism. A cross-flow water turbine generator is characterized in that it is suspended in running water parallel to the flow.