JP3416630B2 - Intake gate - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake gate which is provided in an intake dam and takes in water stored in the intake dam.

[0002]

2. Description of the Related Art Conventionally, a water intake dam for storing water such as tap water and agricultural water is provided with an intake gate for taking in the stored water. As an intake dam having this intake gate, one having a multi-tube intake gate or a porous intake gate is known. Here, an intake dam having these multi-tube intake gates or porous intake gates will be described.

The one shown in FIGS. 26 and 27 is an intake dam having a multi-tube intake gate. In this intake dam, a plurality of intake pipes 2 are embedded in the bank 1, and the openings of these intake pipes 2 are arranged on the wall surface of the bank 1 on the reservoir side in a vertically offset manner. There is. A valve chamber 3 is formed in the bottom of the bank 1, and an intake pipe 2 is passed through the valve chamber 3. And this valve chamber 3
A valve 4 is provided in each of the intake pipes 2 passed through, and the intake pipes 2 are opened and closed by these valves 4. Another water intake pipe 2 is connected to the lowest water intake pipe 2, and the taken water is made to flow downstream through the lowest water intake pipe 2. Reference numeral 5 is a screen for preventing foreign matter such as dust in the stored water from flowing into the water intake pipe 2.

28 and 29 show an intake dam having a porous intake gate. This intake dam is provided with an intake gate portion 12 formed in a semi-cylindrical shape on the water storage side wall surface of the dam body 11.
Therefore, the water intake passage 1 is vertically extended in the bank 11.
3 is formed. A water intake pipe 14 arranged at the bottom of the bank 11 is connected to the water intake passage 13, and the water in the water intake passage 13 is guided to the downstream side by the water intake pipe 14. ing. The water intake gate portion 12 forming the water intake passage 13 is provided with water intake holes 15 at positions vertically displaced from each other on the peripheral surface thereof.
A gate 16 for opening and closing the water intake hole 15 is provided on the front side of the. Spindles or wires 17 are connected to the gates 16, respectively, and these spindles or wires 17 are suspended from an opening / closing device (not shown) in an operation chamber 18 provided at the top of the bank 11.

Then, by pulling up the spindle or the wire 17 by the opening / closing device, the gate 16 to which the spindle or the wire 17 is connected is moved upward, the water intake hole 15 is opened, and the stored water is in the water intake passage 1.
3 and is sent to the downstream side through the water intake pipe 14. The reference numeral 19 is a screen for preventing dust and the like in the stored water from flowing into the water intake hole 15.

[0006] As described above, the intake dam is provided with a plurality of intake ports arranged vertically, and particularly when the water storage is used for agriculture, the upper part is taken into consideration in consideration of the influence on the agricultural products. Side relatively warm water is taken in, and the lower side intake is opened to take water when the water level drops, or the intake is selected and opened to prevent muddy water, or the reservoir The bottom intake was open due to an emergency drop in water level.

[0007]

By the way, in the multi-tube intake gate, the valves 4 for opening and closing the flow paths of the respective intake pipes 2 are necessary.
It is necessary to construct the valve chamber 3 for installing the valve in the bank 1, which is a very large scale, and there is a problem that the construction cost increases. In addition, in the case of a porous intake gate, the intake gate section 12 is constructed on the bank 11 itself,
A water intake channel 13 for guiding the stored water must be formed, and furthermore, a gate 16 is provided in each of the water intake holes 15 of the water intake gate portion 12, and an opening / closing mechanism such as an opening / closing device for opening / closing these gates 16 is required. However, there was still a problem that the equipment cost increased.

[0008] As described above, since the intake gates are all provided in the dam bodies 1 and 11 which form the intake dam, it is necessary to construct them simultaneously when constructing the dam bodies 1 and 11. is there. Therefore, there is a problem that the intake gate having the above structure cannot be installed in the existing intake dam.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an intake gate which can be easily installed in an existing intake dam while suppressing the equipment cost.

[0010]

In order to achieve the above object, a water intake gate according to claim 1 has an outer cylinder having an opening and an inner cylinder having a water intake hole disposed inside the outer cylinder. Is installed on the water storage side of the dam body of the intake dam, and the inner cylinder is relatively moved with respect to the outer cylinder so that the water intake is formed by the opening of the outer cylinder and the intake hole of the inner cylinder. A water intake gate in which the mouth is opened and closed to take in and shut off the stored water, the water intake being composed of an outer cylinder part having the opening and an inner cylinder part having the water intake hole arranged in the outer cylinder part. The unit, the connecting outer cylinder, and the small diameter of the small diameter inserted into the connecting outer cylinder.
It has a double structure with a connecting inner cylinder and these
The connection outer cylinder and the connection inner cylinder are composed of a connection unit that can be connected to the outer cylinder portion and the inner cylinder portion of the water intake unit, respectively, and the water intake unit and the connection unit are connected to each other to form the outer cylinder and the inner cylinder. It was an inner cylinder and was placed on the water storage side of the intake dam and was taken in through the intake port.
Water is sent to the downstream side in the inner cylinder .

As described above, the water intake unit is provided with the inner cylinder portion having the water intake hole formed in the outer cylinder portion having the opening, and the connection unit having the connection inner cylinder passed through the connection outer cylinder. Since they are connected to each other, the installation can be facilitated. In other words, a conventional multi-pipe intake gate that requires the valve chamber to be built in the dam because it requires a valve, or a conventional porous structure that requires the intake gate to be built in the dam itself to form the intake passage. Compared with a type intake gate, it can be easily installed not only in a new intake dam but also in an existing intake dam, and the number of connected intake units can be easily adjusted according to the height of the bank. It can be changed and adapted to any intake dam. In addition, since the water intake hole of the inner cylinder is opened and closed by moving the water intake hole of the inner cylinder relative to the opening of the outer cylinder, a plurality of valves can be provided for each flow path, It is not necessary to provide a gate for moving each by an opening / closing mechanism, and therefore, the facility cost can be significantly reduced.

The water intake gate according to a second aspect is the water intake gate according to the first aspect, in which the inner cylinder is rotated relative to the outer cylinder so that the opening and the water intake hole are separated from each other. The feature is that the intake port is opened and closed.

That is, by rotating the inner cylinder relative to the outer cylinder, it is extremely easy to open and close the water intake port including the opening portion of the outer cylinder and the water intake hole of the inner cylinder, and if necessary. Water can be taken from the reservoir.

According to a third aspect of the present invention, there is provided the intake gate according to the first or second aspect, wherein the outer cylinder portion of the water intake unit and the connecting outer cylinder of the connecting unit are provided with flanges at their connecting ends. It is characterized in that the water intake unit and the connecting unit are connected to each other by joining the flanges to each other.

That is, by joining the flanges to each other, the connecting outer cylinder of the connecting unit and the outer cylinder of the water intake unit can be connected very easily, and the installation work can be facilitated.

According to a fourth aspect of the present invention, in the water intake gate according to the third aspect, one of the flanges joined to each other to connect the water intake unit and the connecting unit slides in the axial direction. It is characterized by being possible.

That is, since one of the flanges joined to each other is slidable in the axial direction, the axial displacement at the joining portion between the outer cylinder portion of the water intake unit and the connection outer cylinder of the connection unit is allowed. As a result, at the time of installation, the connecting outer cylinder and the outer cylinder portion can be reliably joined to each other and can be easily removed.

The intake gate according to claim 5 is characterized by that
The water intake gate according to any one of 4 above is characterized in that the outer cylinder portion forming the water intake unit has a half-divided structure divided into two in the circumferential direction.

As described above, since the outer cylinder portion of the water intake unit has a half-divided structure which is divided into two in the circumferential direction, the maintenance work inside the water intake unit can be performed by removing one of the divided ones. Can be done very easily.

The water intake gate according to claim 6 is characterized by that
5. The water intake gate according to any one of 5, wherein a screen portion provided with a screen for removing foreign matter in the stored water flowing into the outer cylinder portion constituting the water intake unit and the opening portion are closed. A screen portion having a closing portion for opening the opening portion, the opening portion being covered by either the screen portion or the closing portion of the screen plate.

That is, by covering the opening of the outer cylinder portion with the screen portion of the screen plate, it is possible to remove foreign matter of water taken from the stored water through the opening portion by the screen of the screen portion. Further, by closing the opening with the closing portion, it is possible to reliably prevent the inflow of the stored water from the opening during maintenance of the inside of the water storage gate or the equipment on the downstream side of the water storage gate.

A water intake gate according to a seventh aspect is the water intake gate according to the sixth aspect, wherein the screen plate is rotatably attached to an opening edge portion of the opening, and the screen plate is rotated. One of the screen portion and the closing portion is arranged at a position covering the opening.

That is, by rotating the screen plate, the screen portion or the closed portion of the screen plate can be arranged in the opening very easily.

[0024]

[0025]

The intake gate according to claim 8 is composed of an outer cylinder having an opening and an inner cylinder having water intake holes disposed inside the outer cylinder, and is provided on the reservoir side of the dam body of the intake dam. Installed, and by moving the inner cylinder relative to the outer cylinder in the axial direction, the water intake port including the opening and the water intake hole is opened / closed to intake / shut off the stored water. In the gate, the outer cylinder is formed with a plurality of openings at intervals in the longitudinal direction, and the inner cylinder is provided with a plurality of water intake holes at intervals different from the intervals between the openings of the outer cylinder. Is formed, and the inner cylinder is moved in the axial direction with respect to the outer cylinder to selectively open and close the water intake port including the opening and the water intake hole.

In other words, by moving the inner cylinder relatively to the outer cylinder in the axial direction, it is extremely easy to align any of the water intake holes of the inner cylinder with any of the openings of the outer cylinder, and to take these water intakes. It is possible to selectively open and close the intake port including the hole and the opening.

The intake gate according to claim 9, wherein the claim 1
In the intake gate according to any one of 8 above, the water intake gate is supported by the bank body by support mechanisms provided at a plurality of positions in the vertical direction, and the support mechanism includes a support plate portion fixed to the bank body and the outside. It is characterized in that it is composed of a fixing member fixed to the cylinder and a connecting arm for connecting the supporting plate portion and the fixing member.

As described above, by connecting the support plate portion fixed to the dam body and the fixing member fixed to the connecting outer cylinder by the connecting arm, it is possible to install on the dam body very easily, and to install. It is possible to further improve work efficiency.

The water intake gate of claim 10 is the same as that of claim 9.
In the water intake gate described above, the fixing member and the connecting arm are connected to each other and / or one or both of the connecting portion of the supporting plate portion and the connecting arm so as to be relatively displaceable in the vertical direction. It is characterized by that.

As described above, both or either of the connecting portion between the fixing member and the connecting arm and the connecting portion between the supporting plate portion and the connecting arm are connected so as to be relatively movable in the vertical direction. Absolutely absorbs expansion and contraction,
The effect of bending moment can be eliminated. As a result, it is possible to reliably prevent defects due to the action of the bending moment.

The intake gate according to claim 11, wherein the claim 1
10. In the water intake gate according to any one of 10 to 10, the outer cylinder is divided into upper and lower parts, and an annular connecting cylinder body that covers an outer periphery of the outer cylinder is axially slidably provided in the divided part. It is characterized in that the portion connected by the tubular body is an expansion joint portion.

That is, since the outer cylinder can be expanded and contracted by the expansion joint portion, expansion and contraction due to heat can be surely absorbed, and problems due to expansion and contraction can be surely prevented.

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a water intake gate of the present invention will be described below with reference to the drawings. (First Embodiment) In FIGS. 1 to 3, reference numeral 21 is
It is an intake gate. This water intake gate 21 has an outer cylinder 21a.
And an inner cylinder 21 rotatably provided in the outer cylinder 21a.
b, and is provided on the water storage side of the levee body 22 upright from the foundation portion 23 provided at the bottom of the levee body 22 along the vertical direction. This intake gate 21
The connecting outer cylinder 24 includes a connecting unit 26 having a double structure in which a connecting inner cylinder 25 having a small diameter is inserted, and a water intake unit 27 provided between the connecting units 26.

The lower end of the water intake gate 21 is provided with only the connecting outer cylinder 24, and the lower end of the connecting outer cylinder 24 is an intake pipe arranged at the bottom of the foundation portion 23 and the dam body 22. 28 is connected to and communicated with the end portion. Further, the base portion 23 is provided with a lowermost intake pipe 29 that opens to the side, and an opening of the lowermost intake pipe 29 is provided with a gate 31 that opens and closes the opening. The gate 31 has a machine room 3 provided at the top of the bank 22.
The spindle or wire 34 suspended from the hoisting device 33 in 2 is connected to the hoisting device 3
3, the gate 31 is moved up and down via the spindle or the wire 34, whereby the opening of the lowermost intake pipe 29 is opened and closed.

Next, the structure of the water intake unit 27 will be described. As shown in FIGS. 4 and 5, the water intake unit 27 has an outer tubular portion 41 and an inner tubular portion 42 provided inside the outer tubular portion 41. The outer cylinder part 41 is provided with flanges 43 at both ends thereof.
A flange 44 provided at an end of the connecting unit 26 is abutted on the connector 3, and is connected to each other by bolts and nuts. Of the flanges 44 provided at the ends of the connecting unit 26, the flanges 44a provided at the lower end side
Is composed of a flange portion 45 formed in an annular shape and a sealing material 46 provided on the inner peripheral surface of the flange portion 45, and slides watertightly and axially on the outer peripheral side of the connecting outer cylinder 24. It is a loose flange that can be installed.

An opening 47 is formed in the outer cylinder portion 41, and a water intake pipe portion 48 having a tip end enlarged in diameter to form a water intake port is connected to the opening portion 47. The outer cylinder part 41 has an opening 47 to which the intake pipe part 48 is connected,
The front outer cylinder portion 41a that constitutes the front side of the outer cylinder portion 41 and the rear outer cylinder portion 41b that constitutes the rear surface side of the outer cylinder portion 41 have a half-split structure. The front outer cylinder portion 41a and the rear outer cylinder portion 41b are joined to each other by fastening the connecting pieces 40 provided on both sides of the rear outer cylinder portion 41b with bolts and nuts to form a cylindrical outer cylinder portion. It is said to be 41. In addition, on the outer peripheral side of the water intake pipe portion 48, on the upper, lower, left and right sides, the front outer cylindrical portion 41a is provided.
A rib 49 fixed by welding is provided over,
With these ribs 49, the water intake pipe section 48 is provided so that the front outer cylinder section 41
It is securely fixed to and supported by a.

A water intake hole 50 is formed in the inner cylinder portion 42. A joint 51 is provided between the inner tube portion 42 and the connected inner tube 25 to connect them. This joint 51
Is composed of a female joint 52 fixed on the side of the connecting inner cylinder 25 and a male joint 53 fixed on the side of the inner cylinder portion 42.
By fitting the fitting convex portion 53a of the male joint 53 into the fitting concave portion 52a of the female joint 52, the female joint 52 and the male joint 53 are joined, and the connecting inner cylinder 25 and the inner cylinder portion 42 are joined together. It is designed to be joined together.

As shown in FIG. 6, on the inner peripheral surface of the outer cylinder portion 41, a plurality of inner cylinder portion guide members 54 are provided at upper and lower positions at intervals in the circumferential direction. 5
The inner cylindrical portion 42 is rotatably supported by the inner cylindrical portion 41 at a position where the axes thereof coincide with each other. Also,
An annular seal member 55 is fixed to the inner peripheral surface of the outer cylinder portion 42 so as to surround the opening 47, and the watertight convex portion 56 of the seal member 55 protruding toward the inner cylinder portion 42 has an inner cylinder portion. The outer peripheral surface of 42 is in watertight contact.

Then, as shown in FIG. 7, when the water intake hole 50 of the inner tubular portion 42 is located at a position facing the opening 47 of the outer tubular portion 41, the opening of the outer tubular portion 41 is opened by the seal member 55. The portion 47 and the water intake hole 50 of the inner cylinder portion 42 are in communication with each other, and as shown in FIGS. 8 and 9, the inner cylinder portion 42 is rotated so that the water intake hole 50 opens the outer cylinder portion 41. When it is removed from the position facing the portion 47, the opening 47 of the outer tubular portion 41
And the water intake hole 50 of the inner tubular portion 42 is released, and the seal member 55 is brought into close contact with the outer peripheral surface of the inner tubular portion 42 to allow the outer tubular portion 41.
The opening 47 is closed by the outer peripheral surface of the inner cylindrical portion 42.

Further, the water intake pipe portion 4 provided on the outer cylinder portion 41.
8 is provided with a mounting flange 61 at its tip. The attachment flange 61 has a connecting piece 6 at its upper end.
2 is formed, and a screen plate 63 is connected to the connecting piece 62 as shown in FIGS. 10 and 11. The screen plate 63 is formed in an elongated shape, and has a hole 64 communicating with the water intake pipe 48 formed on one side. A screen 65 having a plurality of slits is fixed to the hole 64. ing. The screen plate 63 has a screen portion 63a on one side on which the screen 65 is provided and a closed portion 63b on the other side.

A connecting hole 66 is formed in the center of the screen plate 63, and the connecting plate 62 is attached to the screen plate 6.
A connecting hole 67 communicating with the third connecting hole 66 is formed. The connecting pin 68 is inserted into the connecting holes 66 and 67 while the connecting holes 66 and 67 are in communication with each other. That is, the screen plate 63 is rotatably connected to the connecting piece 62 by the connecting pin 68, and thus, by rotating the screen plate 63, the screen part 63 a or the closing part is closed at the opening part of the water intake pipe part 48. Either one of the parts 63b can be selectively arranged.

That is, by disposing the screen portion 63a in the opening portion of the water intake pipe portion 48, the water intake pipe portion 48 is opened to the water storage via the screen 65, and the opening portion of the water intake pipe portion 48 is closed. By arranging 63b, the intake pipe part 48 is closed.

A plurality of fixing screw holes 71 are formed in the mounting flange 61 at intervals in the circumferential direction. On the other hand, the screen portion 63 a and the closing portion 63 b of the screen plate 63 are provided with bolt holes 72 that communicate with the fixing screw holes 71 of the mounting flange 61 when the bolt holes 72 are arranged at the opening portion of the water intake pipe portion 48. Has been done. And the screen plate 6
The screen portion 63a or the closing portion 63b of No. 3 is arranged at the opening portion of the water pipe portion 48 and the bolt hole 72 is aligned with the fixing screw hole 71, and a bolt (not shown) is passed through the bolt hole 72 for fixing. The screen plate 63 is fixed to the mounting flange 61 by being screwed into the screw hole 71.

The water intake gate 21 composed of the water intake unit 27 and the connecting unit 26 having the above structure is supported by the support mechanism 81 on the water storage side of the bank 22 at a plurality of positions in the vertical direction.

Next, the support mechanism 81 will be described. As shown in FIG. 12, the support mechanism 81 includes a support plate portion 83 fixed to the reservoir side of the bank 22 by an anchor 82, a connecting arm 84 connected to the support plate portion 83, and the water intake gate 21. And a fixing member 85 fixed to the connecting outer cylinder 41 of the connecting unit 26.

The connecting arm 84 is composed of a pair of left and right connecting pipes 86 and a connecting pipe 87 for connecting the connecting pipes 86 to each other. A pair of upper and lower connecting plates 88 are provided on the connecting side of the connecting pipe 86 with the supporting plate portion 83, and the connecting plate 88 is disposed between the connecting plates 88 when the connecting plate 88 is disposed between the connecting plates 88. 88 and support plate portion 83
A connecting pin 89 is inserted into a hole (not shown) formed in the connection plate 89, and the connecting pipe 89 is connected to the support plate 83 by the connecting pin 89. Further, a single connecting plate 90 is provided on the side of the connecting arm 84 where the connecting pipe 86 is connected to the fixing member 85.

The fixing member 85 is composed of a supporting and fixing plate 91 fixed around the connecting outer cylinder 24 constituting the connecting unit 26, and the supporting and fixing plate 91 has the connecting arm 8 attached thereto.
A connecting portion 92 connected to the four connecting pipes 86 is provided. These connecting portions 92 are composed of a pair of upper and lower connecting plates 93. The connecting plates 93 are connected to the connecting plates 93 with the connecting plate 90 of the connecting pipe 86 disposed between the connecting plates 93. The connecting pin 94 is inserted into the formed hole (not shown), and the fixing member 85 is connected to the connecting arm 84 by the connecting pin 94. The connecting plate 93 is fixed to a mounting plate 96 that is firmly fixed to the supporting and fixing plate 91 by a reinforcing rib 95.

Between the support plate portion 83 and the upper and lower connecting plates 88 of the support plate portion 83, and between the connecting plate 90 and the connecting plate 9
A clearance is provided between the upper and lower connection plates 93 of 0, so that the members connected to each other can be slightly displaced in the vertical direction at the connection points.

The water intake gate 21 is provided with stages 101 at a plurality of upper and lower positions including a lower portion of the water intake unit 27. This stage 101 is a rear stage 1 fixed to the bank 22 by an anchor 82.
02 and a front stage 103 fixed to the connecting outer cylinder 24 of the connecting unit 26, and a fence 104 is erected around the front stage 103. Note that reference numeral 105
Connects the stage 101 to the bank 22 or the connecting unit 2
6 is a support member that is supported by the connecting outer cylinder 24 of FIG.

An elevating ladder 106 is provided between the upper and lower stages 101, and the elevating ladder 106 allows the upper and lower stages 101 to move back and forth. An elevating ladder 106 is also provided between the uppermost stage 101 and the machine room 32 and between the lowermost stage 101 and the foundation portion 23 so that it can move back and forth. In addition, reference numeral 107 is a lifting ladder 106.
It is a back basket provided in.

The upper end of the water intake gate 21 having the above structure reaches the machine room 32. As shown in FIG. 13, the support flange 111 is formed on the outer periphery of the upper end portion of the inner cylinder 21b.
Is fixed, and the support flange 111 is mounted on a support base 112 provided in the machine room 32 via a bearing 113, whereby the inner cylinder 21b is supported by the support base 11.
It is rotatably supported by 2. A gear 114 is fixed to the upper end of the inner cylinder 21b.

In the machine room 32, a water intake gate opening / closing device 122 supported by a frame 121 is provided. The water intake gate opening / closing device 122 has a drive motor 123, and when a drive current is supplied to the drive motor 123, a drive shaft 124 is passed through a speed reducer provided inside.
Is designed to be rotated. The drive shaft 124 is provided with a drive gear 125 that meshes with a gear 114 fixed to the upper end of the inner cylinder 21b of the water intake gate 21. This allows the drive shaft 124 to drive the drive motor 123.
The rotational force is transmitted to the inner cylinder 21b of the water intake gate 21 via the drive gear 125 and the gear 114, and the inner cylinder 21b is rotated. The water intake gate opening / closing device 122 is provided with a manual drive handle 126. By rotating the manual drive handle 126, the inner cylinder 21b of the water intake gate 21 can be manually rotated. It is like this.

The outer cylinder 21 which constitutes the water intake gate 21
An expansion joint 131 is provided on the a near the upper end thereof. This expansion joint part 131, as shown in FIG.
On the outer peripheral side of the divided portion of the upper and lower divided outer cylinders 21a, a connecting cylinder body 132 is provided slidably in the axial direction and connected. Further, between the connecting cylinder body 132 and the outer cylinder 21a, an O-ring 1 that seals between them is provided.
33 is provided. In addition, the connecting cylinder body 132 is
It is supported by a support member (not shown) so as not to move in the vertical direction.

In the water intake gate 21 constructed as described above, the water intake holes 50 of the inner cylinder portion 42 forming the inner cylinder 21b of the water intake unit 27 are the same as those of the uppermost water intake unit 27 as shown in FIG. From the first water intake hole 50A,
The second water intake hole 50B and the third water intake hole 50C are formed, and the openings 47 of the outer cylinder portion 41 that form the outer cylinder 21a are the first opening portion 47A and the second opening portion 47 in order from the uppermost one.
B and the third opening 47C. The first water intake hole 50A and the first opening portion 47A constitute a first water intake opening, the second water intake hole 50B and the second opening portion 47B constitute a second water intake opening, and the third water intake hole 50C. And the third opening 47C constitute a third water intake port. Also, the first
Water intake hole 50A, second water intake hole 50B, third water intake hole 50C
Have their openings shifted by 90 ° from each other. That is, when viewed from above, the second water intake hole 50A is not
The water intake hole 50B is shifted counterclockwise by 90 °, and the third water intake hole 50C is rotated clockwise by 90 ° with respect to the first water intake hole 50A.
Deviated.

In the water intake gate 21, the basic condition is that the first water intake hole 50A is connected to the first opening 47A toward the front side to open the first water intake port. That is, as shown in FIG. 15A, the second water intake port and the third water intake port are closed while the first water intake port is open. When the inner cylinder 21b is rotated 90 ° clockwise from the basic state by the water intake gate opening / closing device 122, the first water intake port is closed and the second water intake hole 50B is closed as shown in FIG. 15 (b). The second water intake port is opened by communicating with the second opening portion 47B,
Further, the third intake port is kept closed.

In addition, from the basic state, the intake gate opening / closing device 1
When the inner cylinder 21b is rotated 90 ° counterclockwise by 22, the first water intake port is closed and the third water intake hole 50C and the third opening portion 47C are closed, as shown in FIG. 15 (c). The third water intake port is opened by communication, and the second water intake port is maintained in a closed state. Furthermore, when the inner cylinder 21b is rotated 180 degrees counterclockwise (or clockwise) from the basic state by the water intake gate opening / closing device 122,
As shown in FIG. 15D, the first intake port, the second intake port,
All of the third water intakes are closed.

As described above, the water intake gate 21 is very easily rotated by rotating the inner cylinder 21b, so that the first water intake holes 50A, the second water intake holes 50B, and the third water intake holes 50B arranged vertically.
Select any one of the water intake holes 50C to the first opening 47A,
The second opening 47B and the third opening 47C are communicated with each other to make the first
Water intake can be prohibited by opening the water intake, the second water intake, and the third water intake, or by closing all of the first water intake, the second water intake, and the third water intake. Then, the first water intake hole 50A, the second water intake hole 50B of the water intake gate 21,
From any of the water intake holes 50 of the third water intake holes 50C to the inner cylinder 21
The water taken in b is sent to the water intake pipe 28 connected to the lower end of the water intake gate 21, passes through the water intake pipe 28, and is sent out to the downstream side. That is, the water intake gate 21 can take in the stored water from a required water level and send it out by rotating the inner cylinder 21b.

Further, according to the water intake gate 21, the water intake unit 27 in which the inner cylinder part 42 having the water intake hole 50 is provided in the outer cylinder part 41 having the opening 47 formed therein, and the connection outer cylinder 24. Connection unit 2 with the connection inner cylinder 25 passed through the inside
Since it is configured by connecting 6 and 6, the installation can be facilitated. In other words, a conventional multi-pipe intake gate that requires the valve chamber to be built in the dam because it requires a valve, or a conventional porous structure that requires the intake gate to be built in the dam itself to form the intake passage. Compared with a type intake gate, it can be easily installed not only in a new intake dam, but also in an existing intake dam, and the number of intake units 27 can be easily connected according to the height of the bank. It can be adapted to any intake dam.

Further, since the water intake port is opened and closed by relatively rotating the water intake hole 50 of the inner cylinder part 42 with respect to the opening 47 of the outer cylinder part 41, a plurality of valves are provided for each flow path. It is not necessary to provide a gate or a gate for moving each of the water intake holes by the opening / closing mechanism, and therefore, the facility cost can be significantly reduced.

Moreover, by joining the flanges 43 and 44 together, the connecting outer cylinder 24 of the connecting unit 26 and the outer cylinder portion 41 of the water intake unit 27 can be connected very easily, facilitating the installation work. Can be planned.
Further, since the one flange 44a of the flanges 43, 44 joined to each other is slidable in the axial direction, at the joint portion between the outer cylinder portion 41 of the water intake unit 27 and the connection outer cylinder 24 of the connection unit 26. It is possible to allow axial displacement, which allows the connecting outer cylinder 2 to be installed at the time of installation.
4 and the outer cylinder part 41 can be reliably joined.

Further, the outer cylinder portion 41 constituting the water intake unit 27 is divided into two in the circumferential direction, and the front outer cylinder portion 41 is formed.
Since it has a half-divided structure composed of a and the rear outer cylinder portion 41b, the maintenance work inside the water intake unit 27 can be performed very easily by removing the divided one outer front cylinder portion 41a. It should be noted that the front outer cylinder portion 41a is pivotally connected to the rear outer cylinder portion 41b at the hinge joint portion by hinge-combining one of the joint portions on both sides of the front outer cylinder portion 41a and the rear outer cylinder portion 41b. It is also possible to adopt a structure in which it is opened and closed, and by doing so, it is possible to further facilitate maintenance work.

Further, by covering the opening 47 of the outer cylinder portion 41 with the screen portion 63a of the screen plate 63, foreign matter of water taken from the reservoir through the opening portion 47 is removed by the screen 65 of the screen portion 63a. You can Further, by closing the opening 47 with the closing portion 63b, it is possible to reliably prevent the inflow of stored water from the opening 47 at the time of internal maintenance. Furthermore, by rotating the screen plate 63, the screen portion 63a or the closed portion 63b of the screen plate 63 can be arranged in the opening 47 very easily.

Further, the support plate portion 83 fixed to the bank 22
By connecting the fixing member 85 fixed to the connecting outer cylinder 41 to the connecting arm 84 by the connecting arm 84, it is possible to install it on the bank 22 very easily, and to further improve the efficiency of the installation work. Moreover, since both or either of the connecting portion between the fixing member 85 and the connecting arm 84 and the connecting portion between the supporting plate portion 83 and the connecting arm 84 are connected so as to be relatively displaceable in the vertical direction, the water intake gate 21 The expansion and contraction due to the heat of can be reliably absorbed, and the action of bending moment can be eliminated. As a result, it is possible to reliably prevent defects due to the action of the bending moment.

Further, since the outer cylinder 21a can be expanded and contracted by the expansion joint portion 131, expansion and contraction due to heat can be surely absorbed, and problems due to expansion and contraction can be surely prevented.

Next, another embodiment will be described. In addition, the same reference numerals are given to the same structural parts as those of the first embodiment, and the description thereof will be omitted. (Second embodiment) Reference numeral 14 in FIGS.
1 is an intake gate. The water intake gate 141 is composed of an outer cylinder 141a and an inner cylinder 141b rotatably provided in the outer cylinder 141a. The water intake gate 141 is provided on the water storage side of the dam 22 at the bottom of the dam 22. Is provided upright from the installed foundation portion 23 and provided along the up-down direction.
It is supported on the water storage side surface of the bank 22 by a support mechanism 81 provided between the bank 1a and the bank 22.

As shown in FIGS. 19 to 21, the outer cylinder 141
In a, an opening 1 composed of a plurality of long holes that open to the reservoir side
42 is formed along the up-down direction. This outer cylinder 1
On the water storage side of 41a, a water intake pipe 143 formed in a box shape is provided so as to surround the opening 142. A mounting flange 144 is formed at the open end of the water intake pipe 143.
4 is a screen plate 146 having a screen 145.
Are fastened and fixed with bolts. That is, the screen 145 of the screen plate 146 is adapted to remove foreign matter of water taken from the stored water through the opening 142.

Further, the inner cylinder 141b has a water intake hole 147 formed in a spiral shape for one rotation in the vertical direction.

According to the water intake gate 141 having the above structure, the water intake gate opening / closing device 122 having the inner cylinder 141b at the upper end.
By being rotated by, the spiral water intake hole 147 formed in the inner cylinder 141b is partially moved to the outer cylinder 141a.
In this state, the water is taken in by the inner cylinder 141b and then sent to the intake pipe 28 connected to the lower end of the intake gate 141. And is sent to the downstream side. Here, the outer cylinder 141 of the water intake gate 141 described above.
The openings 142 formed in a are arranged in order from the top to the first.
Opening 142A, second opening 142B, third opening 14
It is said to be 2C. The first opening 142A and the water intake hole 147 constitute a first water intake opening, and the second opening 14
2B and the water intake hole 147 constitute a second water intake port,
The opening 142C and the water intake hole 147 form a third water intake port.

In other words, this water intake gate 141 has the inner cylinder 1
By rotating 41b, the first intake port is opened by communicating the intake hole 147 with the first opening portion 142A, and the second intake port is opened by communicating the intake hole 147 with the second opening portion 142B. The water intake hole 147 to the third position.
The third water intake port is opened by communicating with the opening 142C. Moreover, by adjusting the rotation of the inner cylinder 141b, it is possible to easily adjust the heights of the opening portions of the first, second, and third water intake ports, which makes it possible to store water more finely. Depending on the situation, water can be taken from the required water level and sent out.

(Third Embodiment) In FIGS. 22 to 24, reference numeral 151 is a water intake gate. The water intake gate 151 is composed of an outer cylinder 151a and an inner cylinder 151b that is vertically movable inside the outer cylinder 151a. The water intake gate 151 is provided on the water storage side of the dam 22 at the bottom of the dam 22. It is erected from the base portion 23 and provided along the up-down direction, and is supported on the surface of the bank 22 on the water storage side by a support mechanism 81 provided between the outer cylinder 151a and the bank 22. .

On the outer cylinder 151a, there are formed openings 152, each of which has a plurality of holes that open toward the water storage side, at intervals in the vertical direction. On the water storage side of the outer cylinder 151a, a water intake pipe 153 formed in a cylindrical shape is provided so as to surround the periphery of the opening 152. A mounting flange 154 is formed at the open end of the water intake pipe 153, and a screen 155 is formed on the mounting flange 154.
A screen plate 156 having a is fastened and fixed by bolts. That is, the screen 155 of the screen plate 156 is adapted to remove foreign matter of water taken from the stored water through the opening 152.

Further, the inner cylinder 151a is formed with the same number of water intake holes 157 as the openings 152 of the outer cylinder 141a, and they are oriented in the same direction at intervals in the vertical direction. here,
The distance between these water intake holes 157 is at least the opening 152.
The diameter of the opening 152 is larger than the distance between them by at least the diameter of the opening 152. As a result, any one of these water intake holes 157 can communicate with the opening 152.

The water intake gate 151 has an inner cylinder 1 which is opened by a water intake gate opening / closing device 122 provided at the upper end thereof.
51b can be moved up and down. As a mechanism for moving up and down, a rack 161 is provided on the inner cylinder 151b and the rack 16 is provided on the water intake gate opening / closing device 122.
1 is provided with a pinion 162 that meshes with the pinion 16.
There is one in which the inner cylinder 151b is moved up and down by rotating 2.

Intake gate 151 constructed as described above
In, the water intake hole 157 formed in the inner cylinder 151b is
As shown in FIG. 25, the first water intake hole 157A, the second water intake hole 157B, and the third water intake hole 157C are arranged in order from the uppermost one.
In addition, the openings 152 of the outer cylinder 151a are arranged in order from the topmost one in order of the first opening 152A and the second opening 15A.
2B and a third opening portion 152C. Then, from the first water intake hole 157A and the first opening portion 152A, the first
The water intake is configured, and the second water intake hole 157B and the second opening 1 are formed.
The second water intake port is constituted by 52B and the third water intake hole 157.
A third water intake port is configured by C and the third opening 153C. Then, in this water intake gate 151, the state in which the height position of the first water intake hole 157A is aligned with the first opening portion 152A and the first water intake port is opened is the basic state.
That is, as shown in FIG. 25 (a), with the first water intake opening, the second water intake and the third water intake are closed.

From this basic state, the intake gate opening / closing device 12
When the inner cylinder 151b is lifted by 2 as shown in FIG.
As shown in, the first intake is closed and the second intake is closed.
The second water intake port is opened so that the water intake hole 157B coincides with the second opening portion 152B, and the third water intake port is kept closed. Further, when the inner cylinder 151b is raised by the water intake gate opening / closing device 122, as shown in FIG. 25 (c), the first water intake port and the second water intake port are closed, and the third water intake hole 157C is opened. 3rd corresponding to the 3rd opening 152C
The water intake is opened.

From the basic state, the intake gate opening / closing device 1
When the inner cylinder 151b is lowered by 22 as shown in FIG.
As shown in (d), the first water intake port, the second water intake port, and the third water intake port are all closed.

As described above, the water intake gate 151 can select the first water intake port, the second water intake port, or the third water intake port vertically arranged very easily by moving the inner cylinder 151b up and down. Water can be stopped or all of the first water intake port, the second water intake port, and the third water intake port can be closed to stop the water intake.

The water taken into the inner cylinder 151b from any one of the first, second and third water intake gates of the water intake gate 151 is taken in by the water intake gate 151.
It is sent to the water intake pipe 28 connected to the lower end of the pipe, passes through the water intake pipe 28, and is sent to the downstream side. In other words, the water intake gate 151 can raise and lower the inner cylinder 151b to take in the stored water from a required water level according to the purpose and send it out.

[0080]

As described above, according to the intake gate of the present invention, the following effects can be obtained. According to the water intake gate of claim 1, the water intake unit is provided with the inner cylinder portion having the water intake hole formed in the outer cylinder portion having the opening, and the connection inner cylinder is passed through the connection outer cylinder. Since it is configured by connecting the connecting unit with each other, the installation can be facilitated. In other words, a conventional multi-pipe intake gate that requires the valve chamber to be built in the dam because it requires a valve, or a conventional porous structure that requires the intake gate to be built in the dam itself to form the intake passage. Compared with a type intake gate, etc., it can be easily installed not only in a new intake dam but also in an existing intake dam.
It is possible to easily change the number of connected intake units according to the height of the bank, etc., and to adapt to any intake dam. Further, since the water intake port formed by the opening and the water intake hole is opened and closed by relatively moving the water intake hole of the inner cylinder part with respect to the opening part of the outer cylinder part, a plurality of valves are provided for each flow path. It is not necessary to provide a gate or a gate that is moved by each opening / closing mechanism at each water intake port, so that the facility cost can be significantly reduced.

According to the water intake gate of the second aspect of the present invention, by rotating the inner cylinder relatively to the outer cylinder, it is extremely easy to take in the water consisting of the opening of the outer cylinder and the water intake hole of the inner cylinder. The mouth can be opened and closed, and water can be taken from the reservoir as needed.

According to the water intake gate of the third aspect, by joining the flanges to each other, the connecting outer cylinder of the connecting unit and the outer cylinder of the water intake unit can be connected very easily, which facilitates installation work. Can be realized.

According to the water intake gate of the fourth aspect, since one of the flanges joined to each other is slidable in the axial direction, the outer cylinder portion of the water intake unit and the connection outer cylinder of the connection unit are joined together. A shift in the axial direction at the location can be allowed, and thus, the connecting outer cylinder and the outer cylinder portion can be reliably joined at the time of installation.

According to the water intake gate of the fifth aspect, since the outer cylindrical portion constituting the water intake unit has a half-divided structure which is divided into two in the circumferential direction, the divided one side can be removed. The maintenance work inside the water intake unit can be performed extremely easily.

According to the water intake gate of the sixth aspect, by covering the opening of the outer cylinder portion with the screen portion of the screen plate, the foreign matter of the water taken from the stored water through the opening portion is removed by the screen of the screen portion. Can be removed. Further, by closing the opening with the closing portion, it is possible to reliably prevent the inflow of stored water from the opening during maintenance of the inside or the like.

According to the water intake gate of the seventh aspect, the screen portion or the closed portion of the screen plate can be extremely easily arranged in the opening by rotating the screen plate.

[0087]

According to the water intake gate of claim 8 , by moving the inner cylinder relatively to the outer cylinder in the axial direction, it is extremely easy to open any of the water intake holes of the inner cylinder to the opening of the outer cylinder. It is possible to selectively open and close the water intake port including the water intake hole and the opening by matching with any one of the portions.

According to the water intake gate of the ninth aspect , the support plate portion fixed to the dam body and the fixing member fixed to the connecting outer cylinder are connected by the connecting arm, so that the water dam can be very easily attached to the dam body. It can be installed, and the installation work can be made more efficient.

According to the water intake gate of the tenth aspect , both or one of the connecting portion between the fixing member and the connecting arm and the connecting portion between the supporting plate portion and the connecting arm are connected so as to be relatively movable in the vertical direction. Therefore, the expansion and contraction due to heat can be reliably absorbed, and the action of the bending moment can be eliminated. As a result, it is possible to reliably prevent defects due to the action of the bending moment.

According to the water intake gate of the eleventh aspect , since the outer cylinder can be expanded and contracted by the expansion joint portion, expansion and contraction due to heat can be reliably absorbed, and problems due to expansion and contraction can be reliably prevented. be able to.

[Brief description of drawings]

FIG. 1 is a front view of an intake dam installed with an intake gate for explaining the configuration and structure of the intake gate according to the first embodiment of the present invention.

FIG. 2 is a side sectional view of an intake dam provided with an intake gate for explaining the configuration and structure of the intake gate according to the first embodiment of the present invention.

FIG. 3 is a side sectional view of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 4 is a side sectional view of a water intake unit portion of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 5 is a plan sectional view of a water intake unit portion of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 6 is a partial cross-sectional view of a water intake unit portion of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 7 is a schematic plan cross-sectional view of a water intake unit portion of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 8 is a schematic plan sectional view of a water intake unit portion of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 9 is a schematic plan sectional view of a water intake unit portion of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 10 is a side view of a part of the water intake gate, which is a cross-sectional view of the water intake unit and illustrates the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 11 is a front view of a part of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 12 is a schematic plan sectional view of a part of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 13 is a side cross-sectional view of the upper end portion of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 14 is a side cross-sectional view of a part of the upper end portion of the water intake gate for explaining the configuration and structure of the water intake gate according to the first embodiment of the present invention.

FIG. 15 is a schematic sectional view of a water intake gate for explaining the movement of the water intake gate according to the first embodiment of the present invention.

FIG. 16 is a side sectional view of an intake dam provided with an intake gate for explaining the configuration and structure of the intake gate according to the second embodiment of the present invention.

FIG. 17 is a plan sectional view of the water intake gate for explaining the configuration and structure of the water intake gate according to the second embodiment of the present invention.

FIG. 18 is a perspective view of a part of the water intake gate for explaining the configuration and structure of the water intake gate according to the second embodiment of the present invention.

FIG. 19 is a schematic perspective view of a water intake gate illustrating the configuration and structure of the water intake gate according to the second embodiment of the present invention.

FIG. 20 is a schematic perspective view of an outer cylinder forming an intake gate for explaining the configuration and structure of the intake gate according to the second embodiment of the present invention.

FIG. 21 is a schematic perspective view of an inner cylinder forming the water intake gate for explaining the structure and structure of the water intake gate according to the second embodiment of the present invention.

FIG. 22 is a side sectional view of an intake dam provided with an intake gate for explaining the configuration and structure of the intake gate according to the third embodiment of the present invention.

FIG. 23 is a plan cross-sectional view of a water intake gate for explaining the configuration and structure of the water intake gate according to the third embodiment of the present invention.

FIG. 24 is a perspective view of a part of the water intake gate for explaining the configuration and structure of the water intake gate according to the third embodiment of the present invention.

FIG. 25 is a schematic sectional view of a water intake gate for explaining the movement of the water intake gate according to the third embodiment of the present invention.

FIG. 26 is a side sectional view of an intake dam explaining a conventional intake dam having a multi-tube intake gate.

FIG. 27 is a plan view of an intake dam explaining a conventional intake dam having a multi-tube intake gate.

FIG. 28 is a side sectional view of an intake dam explaining a conventional intake dam having a porous intake gate.

FIG. 29 is a front view of an intake dam explaining a conventional intake dam having a porous intake gate.

[Explanation of symbols]

21, 141, 151 Water intake gate 21a, 141a, 151a Outer cylinder 21b, 141b, 151b Inner cylinder 22 Embankment 24 connected outer cylinder 25 Connection inner cylinder 26 Connection unit 27 Water intake unit 41 Outer cylinder 42 Inner tube 43,44 Flange 47, 142, 152 openings 50, 147, 157 Intake hole 63, 146, 156 screen plate 63a screen section 63b Closure 65, 145, 155 screen 81 Support mechanism 83 Support plate 84 connecting arm 85 Fixing member 131 Expansion joint part 132 Connection cylinder

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Unexamined Patent Publication No. 6-235263 (JP, A) Actually developed 56-159427 (JP, U) Actually developed 1-61227 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) E02B 7/20 E02B 9/04

Claims (11)

(57) [Claims] 1. An outer cylinder having an opening and an inner cylinder having a water intake hole disposed inside the outer cylinder, which is installed on a water storage side of a dam body of an intake dam and is provided on the outer cylinder. A water intake gate in which the inner cylinder is relatively moved to open and close an intake port including an opening of the outer cylinder and a water intake hole of the inner cylinder to intake and block the stored water. Intake unit including an outer cylinder part having a portion formed therein and an inner cylinder part having the water intake hole disposed in the outer cylinder part, a connecting outer cylinder, and a small diameter connecting inner cylinder inserted into the connecting outer cylinder. When
It has a double structure with
And the connecting inner cylinder are composed of a connecting unit that can be connected to the outer cylinder part and the inner cylinder part of the water intake unit, respectively, and the water intake unit and the connecting unit are connected to each other to form the outer cylinder and the inner cylinder. is disposed in the water side of the water intake dam is, the was taken from the intake water in the
A water intake gate characterized in that water is sent to the downstream side in the cylinder . 2. The water intake port including the opening and the water intake hole is opened and closed by rotating the inner cylinder relative to the outer cylinder. Intake gate described. 3. The outer cylinder portion of the water intake unit and the connecting outer cylinder of the connecting unit are provided with flanges at their connecting end portions, and by joining these flanges together,
The water intake gate according to claim 1 or 2, wherein the water intake unit and the connection unit are connected to each other. 4. The water intake according to claim 3, wherein one of the flanges joined to each other to connect the water intake unit and the connecting unit is slidable in the axial direction. Gate. 5. The outer cylinder part constituting the water intake unit,
The intake gate according to any one of claims 1 to 4, wherein the intake gate has a half-divided structure divided into two in a circumferential direction. 6. The outer cylinder part constituting the water intake unit has a screen part provided in the opening part for removing foreign matters in the stored water flowing in, and a closing part closing the opening part. The intake gate according to claim 1, wherein a screen plate is provided, and the opening is covered by either the screen portion or the closing part of the screen plate. 7. The screen plate is rotatably attached to an opening edge portion of the opening, and when the screen plate is rotated, either one of the screen portion and the closing portion is the opening portion. The intake gate according to claim 6, wherein the intake gate is arranged at a position to cover the water intake. 8. An outer cylinder having an opening and an inner cylinder having a water intake hole disposed inside the outer cylinder, which is installed on the water storage side of the dam body of the intake dam and is attached to the outer cylinder. On the other hand, a water intake gate in which the inner cylinder is relatively moved in the axial direction to open and close the water intake port including the opening and the water intake hole to intake and shut off the stored water. A plurality of openings are formed in the cylinder at intervals in the longitudinal direction, and a plurality of water intake holes are formed in the inner cylinder at intervals different from the intervals between the openings of the outer cylinder. Is moved in the axial direction with respect to the outer cylinder to selectively open and close a water intake port including the opening and the water intake hole. 9. A supporting member, which is supported by the bank body by supporting mechanisms provided at a plurality of vertical positions, the supporting mechanism being fixed to the bank body, and a fixing member fixed to the outer cylinder. And a connecting arm for connecting the supporting plate portion and the fixing member .
The intake gate according to any one of 8 above. 10. A vertical displacement can be made relative to each other at one or both of a connecting portion between the fixing member and the connecting arm and a connecting portion between the supporting plate portion and the connecting arm. The intake gate according to claim 9, wherein 11. The outer cylinder is divided into upper and lower parts, and an annular connecting cylinder body that covers the outer periphery of the outer cylinder is provided slidably in the axial direction, and the portion connected by the connecting cylinder body is It is an expansion joint part, It is characterized by the above-mentioned .
10. The intake gate according to any one of 10 .