JP5885321B1 - Open-type gravity water turbine equipped with shielding plate, screen and water turbine for power generation - Google Patents

Abstract

An open gravity-type water turbine provided with a shielding plate, a screen, and a water turbine for power generation is provided. An open gravity-type water turbine is mounted in a water channel so as to be swingable on a support shaft at the upper part of the water channel, and shields the water in the water channel to create a water flow from the upper part toward the lower part. 14, a linear screen 13 attached to the support shaft at the upper part of the waterway, and a descending rake 15 installed so as to move up and down the front surface of the screen, On the downstream side, a power generation turbine attached to a support shaft at the upper part of the water channel via a support arm 22 is provided. The shielding plate, the screen, and the water turbine for power generation are swung up, and the dust stored in the pocket between the screen and the shielding plate is caused to flow down from the lower part. When the waterways increased due to heavy rain or typhoon, the screen and power generation turbine were lifted on the surface of the water to ensure safety during floods. [Selection] Figure 1

Description

The present invention relates to an open gravity-type water turbine provided with a shielding plate, a screen, and a power generation water turbine. The open-type gravity water turbine can be installed in the mainstream of the river by making the shielding plate, the screen and the power generation water turbine ascending and descending from the water surface by a pendulum motion.

All the conventional dust removal devices have collected dust collected on the screen with a rake and accumulated it in another place to treat it as so-called industrial waste.

However, in the case of a conventional rake-flick screen, the following points are problems.
a. The dust becomes industrial waste when it is lifted above the water surface and cannot be returned to the water again.
b. Therefore, in addition to the dust scraping device, a moving and collecting device for the scraped dust is required, and the accumulated dust is required to be treated as industrial waste.

Therefore, the present inventor previously described a movable screen that can be moved up and down and a rake that is normally positioned above the movable screen in Japanese Patent Application No. 2005-750 (see Japanese Patent Application Laid-Open No. 2006-177133, Patent Document 1). A dust removing screen that lowers the rake along the movable screen and pushes the dust to the lower part of the screen, and lifts the screen to a predetermined height so that the dust separated from the movable screen is discharged from the lower part of the movable screen. Proposed.

On the other hand, as shown in FIG. 7, in a normal open-type water turbine power generation form, a bypass water channel is provided separately from the main line, and a dust removing device is disposed in front of the power generation turbine in the bypass water channel to generate power. It was necessary to prevent dust from entering the water turbine.
Therefore, the present inventor can first swing the support shaft 102 provided in the upper part of the water channel 101 shown in FIG. 8 in Japanese Patent Application No. 2011-208479 (see Japanese Patent No. 4902809, Patent Document 2). A screen 103 that creates a water flow from the upper part to the lower part of the shielding plate 104 in the water channel by attaching the shielding plate 104 to the lower part, and a descending type installed so as to move up and down the front surface (upstream side) of the screen 103 A shielding plate, a screen, and a power generation turbine having a dust removing screen having a rake 105 and a power generation turbine 106 that is swingably attached to the support shaft 102 on the back side (downstream side) of the screen 103. An open-type gravity turbine equipped with

In FIG. 8, the dust 107 pushed down below the screen 103 by the lowering rake 105 is discharged into the water channel 101 from below the screen 103 by swinging up the screen 103, as shown in FIG. It is possible to discharge the dust 107 that has been engaged with the water channel 101 easily. Moreover, in the event of a flood, it can be swung up above the surface of the water to avoid flooding.
And by having comprised in this way, it came to be able to install in Honkawa as shown in "FIG. 6".

JP 2006-177133 A Japanese Patent No. 4902809

However, the invention of the Japanese Patent Application No. 2011-208479 (see Japanese Patent No. 4902809, Patent Document 2) uses a single power to scrape the rake and raise the shielding plate, the screen, and the water turbine for power generation. An arc-shaped screen was used, and the rake was scraped down by a rotating motion, and the center of rotation was provided at a location different from the center of rotation of the water wheel and the screen with the shielding plate.
However, in this mechanism, the water turbine and the screen with the shielding plate are lifted from below by the rotational movement of the rake, so the descent of the water wheel and the screen with the shielding plate depends on its own weight and counterweight, and it is forced down to make absolute water shielding. It was an unsuitable mechanism to obtain.
Also, the power characteristics required to gently raise and lower the water turbine and the screen with the shielding plate are not the same as the power characteristics strong against restraint required to forcibly scrape the dust caught in the screen. Rake troubles caused by dust, etc. caught in the screen directly lead to troubles in the rotational movement of the entire water turbine.If the power to rotate the rake breaks down or is restrained, the water turbine and the screen with the shielding plate are raised above the water surface. There was also a problem in terms of ensuring safety, such as the inability to raise it.

Therefore, in order to solve such a problem, the present invention separates the screen from the shielding plate and linearizes it, and the descent of the rake is separated from the rotational movement of the water wheel and the shielding plate as a linear motion. In addition, the rotational movement is performed by an actuator composed of a piston and a cylinder provided on the opposite side of the rotating shaft from the water wheel.
On the other hand, the dust that has been scraped off sometimes floats due to the buoyancy, etc. of the dust, so a pocket was provided between the separated shielding plate and the screen and stocked there.

That is, the open gravity type water turbine provided with the dust removing screen of the present invention, the shielding plate attached so as to surround the water turbine and the water turbine for power generation is installed in the water channel so as to be swingable on the support shaft at the upper part of the water channel. A shield plate that shields the water in the channel and creates a water flow from the upper part to the lower part of the channel, and a linear screen that is swingably attached to the support shaft at the upper part of the channel and installed in front of the shield plate and its front surface A descent rake installed so as to move up and down, and a water turbine for power generation attached to a support shaft at the upper part of the water channel via a support arm on the downstream side of the shielding plate. It is characterized by being formed in an arc shape corresponding to the outer shape of the water turbine for power generation.
Further, the dust scraped from the front surface of the screen by the descent rake is temporarily stored in a pocket between the screen and the shielding plate, and the shielding plate, the screen, and the water turbine for power generation are swung up to remove the dust stored in the pocket. It is characterized by being allowed to flow down from the lower part.

An open gravity-type water turbine provided with a shielding plate, a screen and a water turbine for power generation according to the present invention,
1) When dust accumulates on the front surface of the screen disposed in the water channel, the screen is prevented from being clogged by lowering the lowering rake and pushing down the dust, and temporarily placed in a pocket between the screen and the shielding plate. When a certain amount of dust is stored in the pocket, the shielding plate, the screen, and the water turbine for power generation are swung up around the support shaft toward the downstream side of the water channel and lifted to a predetermined height. Forced to drain from the gap between the bottom and the shielding plate,
2) When the waterway increases due to heavy rain, typhoon, etc., the above-mentioned shielding plate, screen and power generation water turbine are swung around the support shaft toward the downstream side of the waterway, respectively, so that they can be lifted on the water surface. It is also characterized by ensuring the safety of time.

According to the open gravity-type water turbine provided with the shielding plate, the screen, and the power generation water turbine of the present invention, the following effects can be obtained.
A. Since the water flow dam-up from the upper part of the shielding plate flows into the power generation turbine, it is possible to obtain the potential energy necessary for power generation even in a small river, and to provide an open gravity turbine with a large output.
B. Even if the river suddenly increases, it is possible to evacuate the shielding plate, the screen, and the water turbine for power generation above the water surface with a simple operation, so that the flow of water is not hindered.
C. Since the dust is separated from the screen and accumulated in the pocket between the screen and the shielding plate, continuous operation for a long time is possible, and the dust does not become industrial waste, but supports the shielding plate, the screen, and the power generation turbine. The dust can be forcibly discharged by swinging it up toward the downstream side of the water channel around the shaft, and allowed to flow down as it is.

In addition, the above series of processes,
1) When dust accumulates on the front surface of the screen disposed in the water channel, the descent rake is lowered to push down the dust and is stored in a pocket between the screen and the shielding plate to prevent clogging of the screen. .
2) When a certain amount of dust is stored in the pocket between the screen and the shielding plate, the shielding plate, the screen and the water turbine for power generation are swung toward the downstream side, and the dust is placed between the screen and the shielding plate. Force to drain from the pocket through the gap between the channel bottom and the shielding plate.
3) When the water channel increases due to heavy rain, typhoon, etc., the screen, the screen, and the water turbine for power generation are swung up around the support shaft toward the downstream side of the water channel and lifted on the water surface.
By programming this process in the control system, it is possible to automatically maintain the power generation mechanism of the open gravity water turbine, the dust removal mechanism of the dust removal screen, and the danger avoidance mechanism by pendulum motion, It is possible to provide an open gravity-type water turbine provided with a shield plate, a screen, and a water turbine for power generation that can be used and ensure safety.
Of course, no industrial waste is generated for treating the dust in water, and the dust removal system can be simplified.

It is the schematic which shows dust removal and an electric power generation condition in one Example of the open-type gravity type water turbine provided with the shielding board of this invention, the screen, and the water turbine for electric power generation. It is the schematic of the stage in the middle of scraping the dust collected on the screen for dust removal with a descent rake. It is the schematic of the step which scraped off the dust collected on the screen for dust removal with the descent | fall type rake, and was stored in the pocket between a screen and a shielding board. It is the schematic of the state which raised the water turbine for power generation, the screen, and the shielding board, and discharged the dust to the downstream of a river. It is the schematic of the state which raised the water turbine for power generation, the screen, and the shielding board, in order to prevent the flood and failure at the time of the river increase. It is the schematic at the time of installing the water turbine for electric power generation in Honkawa. It is the schematic at the time of arrange | positioning the dust removal apparatus in front of the installation position of the water turbine for a power generation provided in the bypass water channel in the normal hydroelectric power generation form. FIG. 7 is a schematic view of a stage in which dust collected on the dust removal screen is scraped off by a descent rake in an open gravity-type water turbine equipped with a conventional dust removal screen and a power generation turbine. FIG. 5 is a schematic view of a stage where a dust collecting screen and a power generation water turbine are lifted and flowed downstream in an open gravity type water turbine equipped with a conventional dust removal screen and a power generation water turbine.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an open gravity-type water turbine provided with a shielding plate, a screen and a power generation water turbine according to the present invention will be described below in detail with reference to the drawings.
In FIG. 1 showing an embodiment of an open type gravity type water turbine provided with a shielding plate, a screen and a power generation water turbine according to the present invention, for example, at a predetermined interval above a water channel 11 composed of a small river (main river). A dust removing screen 13 is swingably attached to a support shaft 12 that is provided so as to extend over the installed columns and side walls. The screen 13 is disposed such that a lower end thereof and a water channel bottom have a predetermined gap.

Further, a shielding plate 14 is separately provided at the lower side of the screen 13 so as to create a water flow from the upper portion to the lower portion of the shielding plate 14 as indicated by an arrow F as the water flow in the water channel 11. It has become.
The said shielding board 14 is formed in the circular arc shape according to the external shape of the water turbine 21 for electric power generation mentioned later.
A descending rake 15 that moves up and down along the front surface of the screen 13 is attached to a predetermined position on the water channel 11.
Accordingly, the dust scraped down from the front surface of the screen 13 by the descending rake 15 reaches the shielding plate 14 from between the lower end of the screen 13 and the bottom of the water channel, and is formed by a pocket formed between the screen 13 and the shielding plate 14. Temporarily stored.

The descending rake 15 includes a shaft portion 15a and a scraping plate 16 attached to the shaft portion 15a. The scraper plate 16 can be kept in a horizontal state when the descending rake 15 is on the water surface.
The descent rake 15 is driven by an electric motor or the like.

In addition, on the back side of the screen 13, a power generation water turbine 21 is swingably attached to the support shaft 12 provided in the upper part of the water channel 11.
That is, the water turbine 21 for power generation is fixed between the rotating shaft 23 and the rotating shaft 23 which is mounted between the pair of support arms 22 on the left and right of the supporting shaft 12 so as to be swingable and rotatably mounted. A pair of discs 24 on the right and left sides, and a vane plate 25 that is fixed between the beams 28 attached to both discs 24 are provided.
The blades 25 are arranged radially around the rotation shaft 23. A drive belt 23a is driven by the power generation water turbine 21 and rotates the speed increaser 23b and the generator 23c installed on the support arm 22.
The material, number, mounting angle, shape, and the like of the blades 25 and the beams 28 can be appropriately determined according to the diameter of the water turbine 21 for power generation, the speed of the water flow in the river, the amount of water, and the like.

A transmission arm 27 is provided at a predetermined position of the support shaft 12 of the support arm 22 on which the power generation turbine 21 is mounted, and an actuator 26 composed of a piston and a cylinder is attached to the transmission arm 27.
In a normal state, it is disposed at the front position (upstream side) of the support shaft 12, and when the power generation water turbine 21 is swung up in the downstream direction and lifted above the water surface, the actuator 26 rotates around the support shaft 12. Can be done.
Of course, the screen 13 and the shielding plate 14 can also be lifted above the water surface by swinging up in the downstream direction using the same mechanism.
In the present embodiment, the case where the transmission arm 27 is provided at a predetermined position of the support shaft 12 of the support arm 22 is illustrated, but the attachment portion of the transmission arm 22 is limited to the case illustrated. is not.

The open gravity type water turbine provided with the shielding plate, the screen and the power generation water turbine according to the present invention is operated as follows.
<At normal water level>
(A) Step 1 (see FIG. 1)
At the time of dust removal, which is the main purpose of the dust removal screen, the screen 13 is set so that the lower end of the screen and the bottom of the water channel are at a predetermined interval, and the shielding plate 14 disposed at the lower part on the back side of the screen 13 is a water channel. Touching the bottom.
The descending rake 15 is raised above the water surface.
In this state, the cross section of the flowing water is shielded by the shielding plate 14 and the upstream of the water channel rises, and a water flow from the upper part to the lower part of the shielding plate 14 as indicated by arrow F is generated as the water flow in the water channel 11. Depresses the blade 25 to generate a rotational force, and the power generation turbine 21 is activated to generate power.

(B) Step 2 (see FIGS. 2 and 3)
When removing the dust 30 accumulated on the screen 13 during use, the lowering rake 15 is lowered into the water along the screen 13 to push down the dust 30 captured by the screen 13 and scrape it down at the bottom of the screen 13. The plate 16 is rotated to discharge the dust 30 and is pushed out into a pocket between the screen 13 and the shielding plate 14. Therefore, the dust 30 is temporarily stored in the pocket between the screen 13 and the shielding plate 14.
In this manner, when the lowering rake 15 is lowered along the screen 13 and the dust 30 is pushed into the pocket between the screen 13 and the shielding plate 14, the upper water passing ability is restored, so that can do.

(C) Step 3 (see FIG. 4)
In order to remove the dust 30 in the pocket between the screen 13 and the shielding plate 14 and remove it, the actuator 26 is driven to swing the power generation water turbine 21 and the screen 13 and the shielding plate 14 together. The dust 30 separated from the plate 14 is released into the space between the shielding plate 14 and the bottom surface of the water channel 11 and is removed by riding on the water flow.

<When the water increases>
(D) Step 4 (see FIG. 4)
When the river increases, the shielding plate 14, the screen 13, and the power generation water turbine 21 are swung downstream by driving the actuator 26 via the transmission arm 27.

(E) Step 5 (see FIG. 5)
When the shielding plate 14 and the screen 13 and the power generation water turbine 21 are raised above the water surface, the apparatus of the present invention does not hinder the water flow even when the water is increased.

(F) Step 6
When the increased water level is settled, the shielding plate 14 and the screen 13 and the power generation turbine 21 are lowered to the initial position, the descending rake 15 is set at a predetermined position, and power generation and dust removal are started again (step 1). By repeating the above process, it is possible to efficiently generate power while maintaining the dust removal function of the screen.

By programming the series of processes (a) to (f) described above in the control system, power generation can be continued while automatically maintaining the dust removal function on the screen, and in order to treat the dust in water. Industrial waste is not generated, and the entire apparatus can be simplified.
In addition, although the said Example demonstrated the case where the screen 13 was made into linear form, the shape which is not linear form, such as circular arc shape, may be sufficient.

A series of the above processes,
1) When dust accumulates on the front surface of the screen disposed in the water channel, the descent rake is lowered to push down the dust and is stored in a pocket between the screen and the shielding plate to prevent clogging of the screen. .
2) When a certain amount of dust is stored in the pocket between the screen and the shielding plate, the shielding plate, the screen and the water turbine for power generation are swung toward the downstream side, and the dust is placed between the screen and the shielding plate. Force to drain from the pocket through the gap between the channel bottom and the shielding plate.
3) When the water channel increases due to heavy rain, typhoon, etc., the screen, the screen, and the water turbine for power generation are swung up around the support shaft toward the downstream side of the water channel and lifted on the water surface.
By programming this process in the control system, it is possible to automatically maintain the power generation mechanism of the open gravity water turbine, the dust removal mechanism of the dust removal screen, and the danger avoidance mechanism by pendulum motion, It is possible to provide an open gravity-type water turbine provided with a shield plate, a screen, and a water turbine for power generation that can be used and ensure safety.
Of course, no industrial waste is generated for treating the dust in water, and the dust removal system can be simplified.

The open gravity type water turbine provided with the shielding plate, the screen and the power generation water turbine according to the present invention can be used not only in a small river but also in various water channels provided in the water channel. it can.

DESCRIPTION OF SYMBOLS 11 Waterway 12 Support shaft 13 Screen 14 Shielding plate 15 Descent-type rake 15a Shaft part 16 Scraping plate 21 Power generation turbine 22 Support arm 23 Rotating shaft 23a Drive belt 23b Speed increaser 23c Generator 24 Side plate 25 Blade plate 26 Actuator 27 Transmission Arm 28 Beam 30 Dust 101 Water channel 102 Support shaft 103 Screen 104 Shield plate 105 Descent rake 106 Power generation turbine 107 Dust

Claims (4)

In the waterway, a shield plate attached to the support shaft at the upper part of the waterway so as to be able to swing, shields the water in the waterway and creates a water flow from the upper part to the lower part,
A linear screen installed on the front shaft of the waterway so as to be able to swing, and a descent rake installed so as to move up and down the front of the screen, and
A power generation turbine attached to the support shaft at the upper part of the water channel on the downstream side of the shielding plate so as to be able to swing through a support arm;
While forming the shielding plate in an arc shape according to the outer shape of the water turbine for power generation ,
A pocket is provided between the screen and the arc-shaped shielding plate to temporarily store dust scraped from the front surface of the screen by a descending rake, and the shielding plate, the screen, and the water turbine for power generation are swung up. An open gravity-type water turbine provided with a shielding plate, a screen, and a water turbine for power generation, characterized in that the dust stored in the pocket can be allowed to flow down from below . The descending rake is composed of a shaft portion and a scraping plate, and the dust that has been scraped from the front of the screen by the descending rake and discharged from the lower part of the screen by rotating the scraping plate, the screen and the shielding plate The open-type gravity type water turbine provided with the shielding plate, the screen, and the water turbine for power generation according to claim 1, which can be temporarily stored in a pocket between the two. In a stage where dust is accumulated in the pocket between the screen and the shielding plate, the actuator is driven to swing up the water turbine for power generation and the screen and the shielding plate so that the dust separated from the shielding plate is removed. 3. An open type equipped with a shielding plate, a screen and a water turbine for power generation according to claim 1 , wherein the open type is released into a space between the bottom surface of the water channel and the water channel and is removed by riding on the flow of water. Gravity water wheel. By programming the following means in the control system, the power generation mechanism of the open gravity water turbine, the dust removal mechanism of the dust removal screen, and the danger avoidance mechanism by the pendulum motion are automatically maintained for long-term use in the main river. 4. An open gravity-type water turbine provided with a shielding plate, a screen, and a water turbine for power generation according to any one of claims 1 to 3 , wherein safety is possible.
1) When dust accumulates on the front surface of the screen disposed in the water channel, the descent rake is lowered to push down the dust and is stored in a pocket between the screen and the shielding plate to prevent clogging of the screen. Means 2) When a certain amount of dust is stored in the pocket between the screen and the shielding plate, the shielding plate, the screen and the water turbine for power generation are swung toward the downstream side, and the dust is placed between the screen and the shielding plate. 3) Forced discharge from the pocket of the water channel through the gap between the water channel bottom and the shielding plate 3) When the water channel increases due to heavy rain, typhoon, etc., the shielding plate, the screen and the water turbine for power generation are placed downstream of the water channel around the support shaft. Shake up and lift each above the water surface

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