JPS5819862B2 - Elevating power generation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevating type power generation equipment that can be used in places with a head such as rivers and waterways.

In conventional hydroelectric power plants, the waterway section and the power generation section were built separately.

In other words, the power generation section was placed on the side of the waterway section.

According to this, when installing the power generation part, it is necessary to excavate and widen the inside of the cylinder, which requires a very large amount of civil engineering work.

As a solution to this problem, there is a so-called elevating type power generation equipment in which a water turbine type generator is attached to a gate that can block water and discharge water.

However, with this conventional elevating type power generation equipment, the gate is raised when releasing water to adjust the amount of water, which changes the effective head, and because the public power generation release and bottom end release occur at the same time, large fluctuations in water pressure occur downstream of the gate. , the effective head, flow rate, and output of the water turbine fluctuate, and the vibrations of the gate and water turbine generator also increase.

In addition, the suction pipe must be submerged in water, but if the water level on the downstream side is low, if the water level is raised, the suction pipe will be located above the water surface, causing damage to the turbine due to cavitation and reducing the effective water level. This makes it impossible to generate electricity.

Therefore, there is a problem in that the operation of the water turbine generator must be stopped during discharge.

In addition, since the area above the water turbine generator at the gate is open and there is nothing above it, the vibration from this water turbine generator increases, which not only reduces the service life of the water turbine generator, but also The water stopping effect will also be reduced.

Furthermore, as another conventional elevating type power generation equipment, the suction pipe and the generator body were installed, the generator body was added to the gate, and the suction pipe was buried in a concrete weir constructed in the downstream waterway. According to this, it is proposed that
There is a problem in that the effective area (water flow area) of the river cannot be secured, and when the river overflows during a flood, sand accumulates on the upstream side of the concrete weir.

In addition, it is possible to adjust the flow rate by a small amount when discharging power generation, but in order to adjust the flow rate other than discharge of power generation, the gate must be raised together with the generator body, which is similar to the conventional type mentioned at the beginning. Problems will arise.

Furthermore, in both conventional types, the water turbine generator and the generator main body must be pulled up together with the gate during repairs, inspections, or in the event of a flood, and a large power lifting drive device is required.

The purpose of the present invention is to be able to prevent fluctuations in head, water volume, and output during discharge, and also to be able to adjust the water volume while operating the water turbine generator in a fixed position, and to prevent vibrations from the water turbine generator. It is an object of the present invention to provide an elevating type power generation equipment that can reduce the amount of sedimentation caused by flooding and prevent the accumulation of sediment during floods, and that can raise and lower the water turbine type generator using a small power elevating drive device.

In order to achieve the above object, the elevating power generation equipment of the present invention has the following features:
The water turbine generator is divided into an upstream water conduit pipe, a generator main body, and a downstream suction pipe so as to be connectable, and the generator main body is provided so as to be movable up and down in the spillway, and the generator main body is provided on the upstream side of the generator main body in the spillway. An upstream water shutoff gate to which the upstream water conduit pipe is attached is provided on the downstream side, and a downstream water cutoff gate to which the downstream suction pipe is attached is provided on the downstream side, and a flap gate is provided at the top of each of the gates. It is installed.

According to this configuration, by lowering both flap gates, water can be discharged while the water turbine generator is in a fixed position, that is, without raising the water blocking gate or the water stop gate, and the upstream flap gate The collapse of the water can cause water to fill upstream of the downstream water stop gate, submerging the generator body, and in the event of a flood, the generator body, water cutoff gate, and water cutoff gate can be pulled up to allow water to flow out without obstruction. Moreover, the generator main body can be pulled up separately from the water-blocking gate and the water-stopping gate.

An embodiment of the present invention will be described below based on the drawings.

1 is a dam, and a plurality of waterways 3 are formed by piers 2.

Each drainage channel 3 is provided with a frame body 5 that can be raised and lowered and placed on a support base 4, and each frame body 5 has a plurality of generator bodies 6 arranged in a row in the horizontal direction. installed.

The attachment is carried out by placing the support legs 8 from the generator main body 6 on a pedestal 7 provided on the frame 5.

Reference numeral 9 indicates a main roller of the frame body 5.

An upstream water conduit pipe 10 is connectably disposed on the upstream side of the generator main body 6, and a downstream suction pipe 11 is connectably disposed on the downstream side. The water turbine generator 12 is configured by the following.

The upstream water pipe 10 is attached to an upstream water shield gate 13, and the upstream water pipe 1 is attached to the upstream water shield gate 13.
A water turbine closing gate 14 that opens and closes the water intake port to adjust water volume and shut off water, and a screen 15 that is located on the upstream side are provided.

16 is the main roller of the upstream water-shielding gate 13, 17 is the main roller of the water turbine closing gate 14, and 18 is the guide roller.

A guide rail 19 for guiding the main roller 17 is attached to the upstream water-blocking gate 13, and a water filling hole 21 having a water filling valve 20 is formed in the lower part.

The downstream suction pipe 11 is attached to a downstream water stop gate 22.

23 indicates the main roller.

Four parts 24 are formed on the upper part of the upstream water-blocking gate 13, with parts remaining on the left and right sides with respect to the water flow direction, and the remaining parts serve as water-blocking and connection parts for the elevation drive device.

A flap gate 26 whose lower end is attached via a horizontal shaft 25 and which can be raised or lowered is disposed within the recess 24 .

A similar recess 27 is also formed in the downstream water stop gate 22, and a flap gate 29 is disposed within this recess 21 via a horizontal shaft 28.

By placing the upstream water-blocking gate 13 and the downstream water-blocking gate 22 and lowering the upstream flap gate 26, water can be filled between the two gates 13 and 22.

As a result, the generator body 6 can be submerged in water, and the water turbine generator 12 can be operated by moving the water turbine closing gate 14 upward as shown by the imaginary line in FIG. 2 to open the suction port.

Vibrations from the water turbine generator 12 that occur at that time can be alleviated by filling with water.

When discharging water to adjust the amount of water from this state, both flap gates 26 and 29 may be completely lowered or partially lowered.

Even during this discharge, the water turbine generator 12 is operated at a fixed position.

When repairing or inspecting the upstream seepage gate 13, it is sufficient to raise the upstream seepage gate 13.

At this time, since the water pressure is received by the downstream water stop gate 22, the lifting and lowering is performed under conditions with little water pressure resistance.

In addition, when repairing or inspecting the generator main body 6 or the downstream water cutoff gate 22, the upstream water cutoff gate 13 is placed in the floor,
Then, the filled water downstream thereof can be discharged to make it dry, and thereby each can be raised individually under conditions of low water load.

To discharge water during a flood, the generator main body 6 and the downstream water cutoff gate 22 are pulled up, and then the upstream water cutoff gate 13 is pulled up.

This allows water to be discharged through the drainage channel 3 without any obstructions.

When the dam water level is low and water cannot be filled even if the upstream side flap gate 26 is completely collapsed, the water filling valve 20 is operated to open the water filling hole 21, and both games H3
, 22.

Further, even when the water level is normal, water can be filled through the water filling hole 21.

In the above embodiment, the gate water stop line is placed on the downstream side to eliminate the influence of vibrating water from the downstream suction pipe 11.
This may also be used as a gate water stop line on the upstream side at the same time.

Furthermore, since the water turbine closing gate 14 is provided at the upstream water shielding gate 13 and the conventional backfly valve is omitted, the length of the water turbine generator 12 can be shortened.

According to the elevating power generation equipment of the present invention, the following effects can be expected.

That is, by lowering both flap gates, it is possible to discharge water for adjusting the amount of water while keeping the water turbine generator in a fixed position.

Therefore, discharge can be performed without perturbing the effective head, flow rate, or output of the water turbine, making it possible to always generate stable power generation, and to continue generating power as expected even during discharge.

In addition, the generator main body can be submerged in water by lowering the upstream flap gate, and therefore vibrations from the generator main body due to water load can be alleviated, improving the service life of the generator main body. The water stopping effect of the water stopping gate can also be improved.

Furthermore, in the event of a flood, by installing the generator body, water-shielding gate, and water-stop line, water can be discharged without obstacles, and sediment accumulation can be prevented.

Moreover, the generator main body can be lifted up separately from the water-blocking gate and the water-stopping gate, so that the power of the lifting drive device can be reduced.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal side view;
FIG. 2 is a longitudinal cross-sectional side view of the main part, FIG. 3 is a cross-sectional plan view thereof, and FIG. 4 is a front view thereof. 1... Dam, 3... Spillway, 5...
... Frame body, 6 ... Generator main body, 10 ...
...Upstream water conduit pipe, 11...Downstream suction pipe, 1
2... Water turbine generator, 13... Upstream water shielding gate, 14... Water turbine closing gate, 15
... Screen, 20 ... Water filling valve, 21 ... Water filling hole, 22 ... Downstream water stop gate, 24゜27 ...・Concavity, 26, 29・
...Flap gate.

Claims (1)

[Claims] 1 A water turbine type generator is divided into an upstream water conduit pipe, a generator main body, and a downstream suction pipe so that the generator main body can be moved up and down in the water discharge channel, and the generator main body is provided upstream of the generator main body in the water discharge channel. An upstream water-blocking gate to which the upstream water pipe was attached was provided on the side, a downstream water-blocking gate to which the downstream suction pipe was attached to the downstream side, and a flap gate was attached to the upper part of each of the gates. This is an elevating type power generation equipment that is characterized by: