JP3865744B2 - Bellows type selective water intake equipment - Google Patents

Description

  The present invention relates to a water intake facility for taking water in an arbitrary layer of a dam, and more particularly to a bellows type selective water intake facility mainly composed of a bellows-type water intake tube.

Conventionally, water intake dams, agricultural dams, and other multipurpose dams are provided with water intake equipment that can freely adjust the height of the intake port. As a conventional water intake facility, a circular multi-stage gate with a plurality of different diameter gate pipes connected in series and telescopically expandable and provided with a water intake port at the top is widely used as shown in the patent literature. Has been.
Japanese Patent Laid-Open No. 10-331136

  In a conventional water intake facility consisting of a circular multi-stage gate, a plurality of gate pipes with different diameters are made of steel, so that the production cost becomes expensive, and a lifting drive device for expanding and contracting the plurality of gate pipes is also large. Production costs and installation costs become high as a whole, such as becoming expensive. In addition, there are problems that a plurality of steel gate pipes are easily corroded and inferior in durability, and that maintenance costs during long-term use are also expensive.

  An object of the present invention is to provide a water intake facility that is excellent in durability and can reduce maintenance costs, and to provide a water intake facility that is extremely advantageous in terms of production cost and installation cost.

The bellows-type selective water intake facility according to claim 1 is a water intake device for taking water in an arbitrary layer of a dam, and is provided with a water intake passage forming body vertically disposed along the dam body and having a water intake port at the upper end. An elastic bellows in which the intake passage forming body is a flexible annular body made of synthetic resin or rubber containing a reinforcing fiber, and a plurality of annular bodies having an outer peripheral shape of a truncated cone are connected in series. A plurality of metal annular inner diameter side pipe members that connect the small-diameter ends of each pair of annular bodies that are vertically adjacent to each other, and that have a large diameter of each pair of annular bodies that are vertically adjacent to each other. by also in the range, characterized in that a plurality of metallic annular radially outer pipe member for connecting the ends. The annular body with the small diameter end portion on the upper side and the annular body with the large diameter end portion on the top side are alternately arranged, the small diameter end portions of the adjacent annular bodies are connected to each other, and the large diameter end portions of the adjacent annular bodies are connected to each other. By connecting a plurality of annular bodies in series, an expandable / contracted bellows-shaped intake cylinder is formed, and the intake passage forming body is configured with an expandable / contractible bellows-type intake cylinder. In response to this change, the height of the intake port can be adjusted by expanding and contracting the bellows-shaped intake cylinder, and the surface water of the dam lake can be taken.

Bellows selective intake facility of claim 2 is the invention of claim 1, in order to regulate the maximum distance between the outer diameter side pipe between vertically adjacent, to connect the outer diameter side pipe between the A plurality of band members are provided.

Bellows selective intake facility of claim 3 is the invention of claim 1 or 2, characterized in that a plurality of guide wires for guiding a plurality of outer diameter pipe in the vertical direction.

The bellows-type selective water intake equipment according to claim 4 is the invention according to any one of claims 1 to 3 , wherein in a state where the bellows-type water intake cylinder is contracted, the plurality of annular bodies are in the same posture and overlap substantially closely. It is characterized by that.

According to a fifth aspect of the present invention, the bellows-type selective water intake facility is characterized in that a security gate is provided below the lower end of the bellows-type water intake tube in any one of the first to fourth aspects.

According to the first aspect of the present invention, the intake passage forming body is formed of an expandable / contracted bellows-shaped intake cylinder , and the bellows-shaped intake cylinder can be manufactured by combining a plurality of one kind of annular bodies. The water bottle can be manufactured at low cost and can be made of flexible synthetic resin or rubber material other than metal, so the manufacturing cost can be reduced and the weight can be reduced. It is also possible to reduce the size of the drive device, and it is possible to reduce the construction cost of the entire intake facility.
Moreover, since the bellows-shaped water intake tube can be configured to have excellent corrosion resistance, it is possible to improve corrosion resistance and durability, simplify maintenance, and reduce maintenance costs.

In addition, since the small-diameter end of the annular body is connected to the pipe member on the inner diameter side, it is not necessary to bend the annular body strongly, and the amount of distortion of the annular body associated with the expansion and contraction of the bellows-shaped water intake cylinder can be reduced to increase durability. it can. Since the large-diameter end of the annular body is connected to the outer diameter side pipe member, it is not necessary to strongly bend the annular body, and the amount of distortion of the annular body accompanying expansion and contraction of the bellows-shaped water intake cylinder can be reduced to increase durability. it can.

According to the invention of claim 2 , since the maximum separation distance between the outer diameter side pipe members adjacent in the vertical direction is regulated by the plurality of band members, it is possible to prevent an excessive load from acting on the annular body, and to improve durability. It can be secured.
According to the invention of claim 3, since the plurality of outer diameter side pipe members are guided in the vertical direction by the plurality of guide wires, the bellows-shaped water intake tube can be guided to expand and contract along the plurality of guide wires. In addition, damage to the bellows-shaped water intake cylinder can be prevented and durability can be enhanced.

According to the invention of claim 4 , in the state where the bellows-like water intake tube is contracted, the plurality of annular bodies are in the same posture and overlap almost closely, so the vertical direction of the bellows-type water intake tube when in the contracted state It can be configured so that the length is reduced.
According to the fifth aspect of the present invention, the safety gate is provided below the lower end of the bellows-shaped water intake cylinder. Therefore, when an excessive water pressure acts on the bellows-type water intake cylinder for some reason, the safety gate is opened. This can prevent the bellows-type water intake tube from being damaged.

  The bellows type selective water intake facility of the present invention is a water intake device for taking water of an arbitrary layer of a dam, and is provided with a water intake passage forming body that is vertically disposed along the dam body and has a water intake port at the upper end. This water intake passage forming body is constituted by a bellows-type water intake tube that can be expanded and contracted. The bellows-shaped water intake tube is formed by connecting a plurality of annular bodies having a circular truncated cone outer peripheral shape, which are made of a synthetic resin or rubber containing a reinforcing fiber and having a flexible shape.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1 and FIG. 2, this bellows type selective water intake facility 1 is for taking water in an arbitrary layer near the surface of the dam, and this bellows type selective water intake facility 1 is located on the water storage side of the dam. Along the concrete dam body 2 is arranged in a vertical posture. On the front side of the bellows type selective water intake facility 1, screens 3 are provided for preventing foreign substances such as floating substances and dust from entering. On the left and right sides of the bellows type selective water intake facility 1, An integrally formed concrete side wall 4 is formed.

  The bellows type selective intake equipment 1 includes a screen 3, a bellows-shaped intake cylinder 20 constituting an intake passage forming body 5, an intake inlet forming body 7 that forms an intake inlet 6 at the upper end of the intake passage forming body 5, and an intake inlet forming body. A lifting / lowering drive device 9 for raising and lowering a water intake port forming body 7 connected to a pair of hook members 8 and a bellows-like water intake cylinder 20 attached to 7, a rest base 10, a water control lid 11, a rest base The auxiliary elevating drive device 12 for rotating 10 and the water channel connection 40 connected to the lower end of the bellows-shaped water intake cylinder 20 are included.

  The intake passage forming body 5 is vertically disposed along the dam dam body 2 and has an intake port 6 at the upper end. The intake passage forming body 5 is configured by an expandable and contracted bellows-shaped intake cylinder 20. The bellows-shaped water intake cylinder 20 includes a plurality of annular bodies 21, a plurality of inner diameter side pipe members 22, a plurality of outer diameter side pipe members 23, a plurality of band members 24 and the like connected in series (FIG. 6). FIG. 7).

  As shown in FIGS. 2, 6, and 9, the annular body 21 is a flexible annular body (for example, 4 mm thick) made of synthetic resin or rubber containing reinforcing fibers, and has an outer peripheral shape of a truncated cone. It is an annular body. The annular body 21 at the uppermost end in the bellows-shaped water intake cylinder 20 is connected to the intake port forming body 7 with the small diameter end portion 21a (inner peripheral end portion) facing upward, and is larger than the annular body 21 with the small diameter end portion 21a facing upward. The annular bodies 21 with the diameter end portions 21b (large diameter end portions) on the upper side are alternately arranged. The plurality of annular bodies 21 have the same structure and the same shape formed by a common mold.

  The small-diameter end 21a of the annular body 21 adjacent to the upper and lower sides is overlapped with the upper and lower surfaces of the annular inner diameter pipe member 22 made of stainless steel, and the annular annular plate 25 made of stainless steel is fastened with bolts. Spacers 26 are fixed to the annular contact plate 25 at appropriate intervals in the circumferential direction on the lower surface of the inner diameter side pipe member 22. The large-diameter end 21b of the annular body 21 adjacent to the upper and lower sides is overlapped on both the upper and lower surfaces of the annular outer diameter side pipe member 23 made of stainless steel, and the stainless steel annular contact plate 27 is fastened with bolts. Spacers 28 are fixed to the annular contact plate 27 at appropriate intervals in the circumferential direction on the lower surface of the outer diameter side pipe member 23. Note that FIG. 6 does not show the state where the bellows-shaped water intake tube is maximally contracted, and when the bellows-shaped water intake tube is maximally contracted, the lower ends of the spacers 26 and 28 abut against the annular contact plates 25 and 27, respectively. .

  As shown in FIGS. 6 and 9, in order to regulate the maximum separation distance between the outer diameter side pipe members 23 adjacent in the vertical direction when the bellows-shaped water intake cylinder 20 is extended, it is adjacent in the vertical direction. A plurality of (for example, six) band members 24 that connect the outer diameter side pipe members 23 are provided at equal intervals in the circumferential direction. The end of each band member 24 is fixed to a fixing plate 29 fixed to the outer peripheral surface of the outer diameter side pipe member 23 by a presser plate 30 and a bolt 31, and a retaining rod is attached to the end of each band member 24. 32 is fixed.

  As shown in FIGS. 7 and 9, a plurality of (for example, three) guide wires 33 for vertically guiding all the outer diameter side pipe members 23 are stretched vertically over the entire height of the water intake equipment. The wire 33 is inserted through the hole of the guided piece 34 protruding from the outer diameter side pipe member 23 and guides the entire outer diameter side pipe member 23 in the vertical direction.

As shown in FIGS. 2 and 5, the intake port forming body 7 is formed in a fan-like box shape in plan view with a plate made of stainless steel, and a rectangular intake port 6 is formed on the front side thereof. Rollers 35 are respectively provided at the ends of the arms 34 that extend from the intake port 7 to the left and right. The left and right side walls 4 of the provided as guide rails 36 for guiding the roller 35 extends vertically, the tip of the roller 35 of the left and right arms 3 4 are respectively guided by the guide rails 36, intake bung hole forming member 7 is vertical It is guided to move up and down smoothly.

  As shown in FIGS. 2 and 10, a stainless steel channel connection body 40 is connected to the lower end of the bellows-shaped water intake cylinder 20, and this water channel connection body 40 is connected to the upper end of the water discharge water channel 42 in the base of the dam dam body 2. By being placed on the side, the passage in the bellows type water intake cylinder 20 is connected to the water discharge water passage 42 through the water passage 41 in the water passage connector 40. As shown in FIGS. 3, 9, and 10, a plurality of annular bodies 21 that are in a contracted state and have the same posture and overlap each other in close proximity are disposed on the upper part of the channel connection body 40. An accommodation receiving portion 40a for receiving a plurality of annular bodies 21 with the large-diameter end portion 21b on the upper side is formed.

As shown in FIG. 2, the lifting / lowering drive device 9 lifts or lowers the water intake port forming body 7 connected to the bellows-shaped water intake tube 20 by winding or unwinding the wire connected to the water intake port forming body 7. Is. The elevating drive device 9 is installed in the machine room 14 at the upper end portion of the bellows type selective water intake facility 1. The bellows-shaped water intake cylinder 20 can be expanded and contracted by raising and lowering the water intake port forming body 7 by the elevating drive device 9.
When the water level of the dam is high, the bellows-like water intake cylinder 20 extends substantially according to the water level, and water in an arbitrary layer (but usually the surface layer) in the dam is taken from the water intake port 6 at the upper end to take the bellows-like water intake. The water is discharged through the water channel of the water bottle 20, the water channel 41 of the water channel connector 40, and the water discharge water channel 42. Even when the water level of the dam is low, the bellows-like water intake cylinder 20 contracts substantially according to the water level, and water in an arbitrary layer (but usually the surface layer) in the dam is taken from the water intake port 6 at the upper end. Similarly released.

  A security gate 13 is provided on the front side of the water channel connector 40 below the lower end of the bellows-shaped water intake cylinder 20. For example, when the intake port 6 is clogged with dust and the water head difference between the water pressure in the dam and the water pressure in the bellows-shaped intake cylinder 20 exceeds a predetermined value, the security gate 13 automatically turns to the horizontal position. It is designed to move and open.

  When inspecting or repairing the bellows-shaped water intake cylinder 20, as shown in FIG. 3, the bellows-shaped water intake cylinder 20 is maximally contracted, and the hook member 8 shown in the figure is further lowered to connect the water channel connector. After the engagement with the upper end of 40, the bellows-shaped water intake tube 20 and the channel connection body 40 in the contracted state to the maximum are pulled up to the ascending position shown by the chain line in FIG. I do.

Further, in the case of or repair to check the water discharge waterway 4 2, similar to the above, raising the bellows Johto water bottle 20 and the water channel connector 40 of the deflated state until the maximum raised position indicated by the chain line in FIG. 2 The suspension platform 10 is rotated to a horizontal posture by the auxiliary lifting drive device 12, and the water control lid 11 provided on the suspension platform 10 is fixed to the lower end side of the water channel 41 of the channel connection body 40 with bolts, and then lowering the overall, the upper end of the drainage water passage 42 is closed by Seisuifuta 11, so as to water discharge waterway 42 is water does not flow.

Next, the operation and effect of the bellows type selective water intake facility 1 described above will be described.
The bellows-shaped water intake cylinder 20 can be expanded and contracted by raising and lowering the intake water inlet forming body 7 by the elevating drive device 9. The action of selectively taking and discharging water from an arbitrary layer of the dam by expanding and contracting the bellows-like water intake cylinder 20 according to the water level of the dam is as described above.

  The intake passage forming body 5 is composed of an expandable / contracted bellows-shaped water intake cylinder 20, and the bellows-shaped water intake cylinder 20 is configured by connecting a plurality of annular bodies 21 in series, and the annular body 21 is a flexible body containing reinforcing fibers. Since it is made of a synthetic resin or rubber material, the manufacturing cost of the bellows-shaped water intake cylinder 20 can be reduced and the weight can be reduced, so that the lifting drive device 9 for raising and lowering the bellows-shaped water intake cylinder 20 is reduced in size. It is also possible to reduce the construction cost of the entire water intake facility 1. And since the bellows-shaped water intake cylinder 20 can be comprised in what is excellent in corrosion resistance, it can improve corrosion resistance and durability, can simplify the maintenance management during a long-term use, and can reduce a maintenance management cost.

  Since the small-diameter end 21a of the annular body 21 is connected to the inner diameter side pipe member 22, it is not necessary to bend the annular body 21 strongly, and the amount of distortion of the annular body 21 due to the expansion and contraction of the bellows-shaped water intake cylinder 20 is reduced and durable. Can increase the sex. Since the large-diameter end 21b of the annular body 21 is connected to the outer diameter side pipe member 23, it is not necessary to bend the annular body 21 strongly, and the amount of distortion of the annular body 21 accompanying the expansion and contraction of the bellows-shaped intake cylinder 20 is reduced. Durability can be increased.

  A small-diameter end 21a (inner peripheral end) of the annular body 21 is connected to the inner diameter side pipe member 22, and a large diameter end 21b (outer peripheral end) of the annular member 21 is connected to the outer diameter side pipe member 23. Since both the inner and outer end portions of the annular body 21 are reinforced and held by the inner diameter side and outer diameter side pipe members 22 and 23, the bellows-shaped water intake cylinder 20 is hardly damaged, and durability can be improved.

  Since the maximum separation distance between the outer diameter side pipe members 23 that are vertically adjacent to each other is regulated by the plurality of band members 24, it is possible to prevent an excessive load from acting on the annular body 21 and to ensure durability. Further, since the plurality of outer diameter side pipe members 23 are guided in the vertical direction by the plurality of guide wires 33, the bellows-shaped water intake cylinder 20 can be guided so as to expand and contract along the plurality of guide wires 33. Damage to the water intake tube 20 can be prevented, durability can be improved, and the flow of water flowing through the bellows-shaped water intake tube 20 can be smoothed.

In a state in which the bellows-shaped water intake cylinder 20 is contracted, the plurality of annular bodies 21 are in the same posture and overlap in an approximate manner, so that the entire length of the bellows-type water intake cylinder 20 in the contracted state is reduced. Therefore, the vertical length of the bellows type selective water intake facility 1 can be reduced, which is advantageous in terms of facility costs.
Since the safety gate 13 is provided below the lower end of the bellows-shaped water intake cylinder 20, when an excessive water pressure acts on the bellows-type water intake cylinder 20 for some reason, the safety gate 13 is opened to open the bellows-shaped water intake cylinder. The damage 20 can be prevented.

An example in which the embodiment is partially changed will be described.
1] Instead of the inner diameter side pipe member 22 in the bellows-shaped water intake cylinder 20, a metal annular plate can be adopted, and instead of the outer diameter side pipe member 23, a metallic annular plate can be adopted. These annular plates can also reinforce and maintain the shape of the plurality of annular bodies 21 constituting the bellows-shaped water intake cylinder 20. Alternatively, the small-diameter end portions 21a of the adjacent annular bodies 21 are fixed together in a state where the inner diameter side pipe material 22 is omitted, and the large diameter end portions of the adjacent annular bodies 21 are fixed in a state where the outer diameter side pipe material 23 is omitted. May be.

2] The ring-shaped body 21 of the bellows-shaped water intake cylinder 20 is composed of a woven fabric having excellent strength (for example, a synthetic resin tent fabric), or a synthetic resin having low friction on both surfaces of such a woven fabric. You may comprise with a flexible sheet-like (film-like) material which coat | covered the coat and the rubber coat.
3] The inner diameter side pipe material 22 and the outer diameter side pipe material 23 in the bellows-shaped water intake cylinder 20 may be formed of a molded body (pipe material or non-pipe material) made of synthetic resin. Moreover, you may comprise most of the various components used for the bellows-shaped water intake cylinder 20 with the components made from a synthetic resin.
4] When the bellows-shaped water intake cylinder is in a fully contracted state, the plurality of annular bodies can be configured to overlap with a posture in which the small diameter end portion is on the upper side and the large diameter end portion is on the lower side. .

  5] The present invention is not limited to the embodiments described above, and those skilled in the art will implement the present invention with various modifications added thereto without departing from the spirit of the present invention. Therefore, the present invention includes those modifications.

It is a front view of the bellows type selective intake equipment concerning the example of the present invention. It is sectional drawing of a bellows type selective intake equipment and a dam body. It is principal part sectional drawing which shows the state which contracted the bellows-shaped water intake cylinder to the lowest position. It is a top view of the machine room which accommodated the raising / lowering drive device and the auxiliary raising / lowering drive device. It is a top view of a bellows type selective intake facility. It is a principal part expanded sectional view of the bellows-like water intake pipe made into the substantially contracted state. It is principal part sectional drawing which shows an outer diameter side pipe material and a guide wire. It is a figure which shows the connection part which connects a band member to an outer diameter side pipe material. It is sectional drawing of the bellows-shaped water intake tube and the water channel connection body made into the expansion | extension state. It is sectional drawing of the bellows-like water intake pipe and the waterway connection body made into the contracted state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bellows type selective intake equipment 2 Dam dam body 5 Intake passage formation body 6 Intake port 13 Safety gate 20 Bellows-shaped intake cylinder 21 Annular body 21a Small diameter end 21b Large diameter end 22 Internal diameter side pipe material 23 Outer diameter side pipe material 24 Band member 33 Guide wire

Claims (5)

In a water intake device for taking water from an arbitrary layer of a dam,
A water intake passage forming body vertically disposed along the dam dam body and having a water intake port at the upper end is provided, and the water intake passage forming body is a synthetic resin or rubber-made annular body with reinforcing fibers. A plurality of annular bodies having an outer peripheral shape of the truncated cone are connected to each other in a series, and the bellows-type water intake tube can be expanded and contracted.
A plurality of metal annular inner diameter side pipe members that connect the small-diameter ends of each pair of annular bodies that are vertically adjacent to each other, and a metal that connects the large-diameter ends of each pair of annular bodies that are vertically adjacent to each other Bellows type selective water intake equipment, characterized by providing a plurality of annular outer diameter side pipe materials . To regulate the maximum distance between the outer diameter side pipe between vertically adjacent, according to claim 1, characterized in that a plurality of band members connecting the outer diameter side pipe between the Bellows type selective water intake equipment. The bellows-type selective water intake system according to claim 1 or 2 , wherein a plurality of guide wires for guiding the plurality of outer diameter side pipe members in the vertical direction are provided. The bellows-type selective water intake system according to any one of claims 1 to 3 , wherein in a state in which the bellows-shaped water intake tube is contracted, the plurality of annular bodies are in the same posture and overlap in an approximate manner. The bellows type selective intake equipment according to any one of claims 1 to 4 , wherein a safety gate is provided below a lower end of the bellows-shaped intake pipe.