JP4532336B2 - Water intake structure of intake pipe - Google Patents

Description

  The present invention relates to a water intake section structure of a water intake pipe used mainly for taking seawater or the like.

  For intake of seawater, lake water, etc., intake pipes with iron wire armoring on the outside of rigid polyethylene pipes are generally used. The intake pipe is laid so that the tip of the intake pipe is located at the bottom of the water at the required depth (including the seabed, lake bottom, etc.). Therefore, a frame body that holds the intake port of the intake pipe away from the water bottom is attached to the tip of the intake pipe. A conventional frame has a central cylindrical body into which the tip of the intake pipe is inserted at the center, and a surrounding frame in the shape of a polygonal frustum is formed by welding a frame member such as a metal pipe around the cylindrical body. It is provided. The intake pipe is a large one having an outer diameter of several tens of centimeters, and the frame is a large one having a length of, for example, 3 m and an opposite side distance of about 3.5 m.

  Since the intake part of such an intake pipe has a structure in which the distal end of the intake pipe is inserted into the central cylindrical body of the frame, the distal end of the long, thick and highly rigid intake pipe is connected to the large frame. It is difficult to insert directly into the central cylinder. Therefore, a short intake pipe and a pipe joint were prepared separately, and after the short intake pipe was inserted and fixed to the frame, the short intake pipe was connected to the tip of the long intake pipe with a pipe joint. A pipe joint for a water intake pipe has a retaining portion of an armored iron wire, and is structurally complicated, requiring a lot of time for assembly and increasing costs.

  In order to solve such a problem, a water intake section structure of a water intake pipe having a configuration as shown in FIGS. 7 to 10 has been proposed. In this intake section structure, a frame body 2 that holds the intake port 1 a of the intake pipe 1 away from the water bottom 3 around the tip of the intake pipe 1 is attached. The frame 2 is composed of a central cylindrical body 4 and a surrounding frame 5 provided by combining frame members around the central cylindrical body 4. The frame 2 is divided into two half frames 2A and 2B along a plane (AA plane) passing through the central axis, and the two divided frames 2A and 2B are taken by the half cylinders 4A and 4B. The water pipe 1 is attached to the water intake pipe 1 by pinching and tightening the tip.

  As shown in FIG. 10, the intake pipe 1 is obtained by armoring a plurality of iron wires 7 on the outside of a hard polyethylene pipe 6. On the outer periphery of the distal end portion of the intake pipe 1, there is provided a terminal fitting 8 for folding the iron wire 7 outward and fastening it. The frame 2 is sandwiched between the terminal fittings 8 with the half cylinders 4A and 4B, and the terminal fitting 8 and the half cylinders 4A and 4B are fixed with bolts 9 or the like so as not to be displaced in the axial direction. It attaches to the water pipe 1 (refer patent document 1).

JP 2003-64732 A

  The leading end of the intake pipe is likely to be bent due to its own weight, bent hook, weight of the terminal fitting 8, and the like. For this reason, when attaching the frame 2 to the water pipe 1 in the conventional water intake structure, the tip of the water intake pipe 1 is inclined with respect to the central cylinder 4 of the frame 2 as shown in FIG. There is a problem that it is not easy to attach the frame body 2 to the water pipe 1, the number of steps for assembling the water intake section structure is increased, and the cost of the water intake section structure is increased.

  The object of the present invention is to solve the above problems, to easily attach the frame body to the water intake pipe, to reduce the number of steps for assembling the water intake structure, and to reduce the cost of the water intake structure. It is to provide a partial structure.

In order to achieve the above object, in the invention described in claim 1 of the present invention, a frame body that holds the intake port of the intake pipe away from the water bottom is attached around the tip of the intake pipe. The frame body is composed of a central cylindrical body and a surrounding frame provided by combining frame members around the central body, and the frame body is divided into two on a plane passing through the central axis, and the half is divided into two. In the water intake portion structure of the intake pipe attached to the intake pipe, the central cylinder constituting the frame body is 1 to 2 in the longitudinal direction by clamping the split frame body with the half cylinder body and clamping the tip of the intake pipe. Divided at multiple locations, minutes
The tension wire is moored at the gap between the split central cylinders and the tip of the intake pipe
Corrects the bending of the tip by acting, or push force by hand or jig
Is characterized by correcting the bending of the tip by tightening the tip with a half cylinder of the central cylinder .

The invention described in claim 2 of the present invention is such that a frame body that holds the water intake port of the water intake pipe in a state separated from the water bottom is attached around the tip of the water intake pipe. Is composed of a central cylindrical body and a surrounding frame provided by combining frame members around the central cylindrical body. In the intake pipe structure of the intake pipe attached to the intake pipe, windows are formed at one or more locations in the longitudinal direction of the central cylindrical body constituting the frame body. The tip of the window and intake pipe
Anchor the tension wire to the part and correct the bending of the tip by applying force, or
Is the tip by tightening the tip with a pressing force by a jig or a half cylinder of the center cylinder
It is characterized by correcting bending .

  According to the intake pipe structure of the intake pipe of the first aspect of the present invention, the central cylindrical body constituting the frame is divided in one or more places in the longitudinal direction, and the intake pipe is arranged between the divided central cylindrical bodies. Since the gap for correcting the bending of the distal end portion is formed, a force in the direction of correcting the bending can be applied to the distal end portion of the intake pipe through the gap. As a result, the bending of the tip of the water intake pipe is corrected and the frame body becomes almost parallel with no inclination with respect to the central cylinder of the frame body, so that the frame body can be easily attached to the water pipe, The number of steps to assemble can be reduced, and the cost of the intake structure can be reduced.

  According to the intake pipe structure of the intake pipe according to claim 2 of the present invention, a window for correcting the bending of the tip of the intake pipe is formed in one or more places in the longitudinal direction of the central cylindrical body constituting the frame. Therefore, the force of the direction which corrects the bending can be made to act on the front-end | tip part of a water intake pipe through the window. As a result, the bending of the tip of the water intake pipe is corrected and the frame body becomes almost parallel with no inclination with respect to the central cylinder of the frame body, so that the frame body can be easily attached to the water pipe, The number of steps to assemble can be reduced, and the cost of the intake structure can be reduced.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a partially cutaway side view showing a first embodiment of a water intake structure of a water intake pipe according to the present invention, FIG. 2 is a front view of the water intake structure of FIG. 1, and FIG. 3 is a water intake structure of FIG. FIG. 4 is a front view showing a state before the frame body is attached to the water pipe, and FIG. 4 is an enlarged view showing a portion near the tip in a state where the frame body is attached to the tip part of the water intake pipe in the water intake portion structure of FIG. FIG.

  As shown in FIGS. 1 to 3, the water intake structure of the present embodiment is a frame 12 that holds the water intake 10 a of the water intake pipe 10 away from the water bottom 14 around the tip of the water intake pipe 10. Is attached.

  The frame body 12 is a polygonal frustum or truncated cone by joining a central cylindrical body 16 attached to the outer periphery of the tip end portion of the intake pipe 10 and a frame member such as a metal pipe around the central cylindrical body 16 by welding or the like. (The illustrated example is a regular hexagonal frustum) and a surrounding frame 18 provided in combination. The frame 12 is attached to the tip of the intake pipe 10 such that the outer peripheral inclined surface of the polygonal frustum is widened toward the tip of the intake pipe 10 as shown in FIG. In this way, any one of the six planes on the outer periphery of the frame 12 settles on the water bottom 14, so that the most advanced water intake 10 a of the water intake pipe 10 is kept away from the water bottom 14. Will be.

  As shown in FIG. 1, the central cylindrical body 16 constituting the frame body 12 is divided into three central cylindrical bodies by planes perpendicular to the central axis line at two locations separated by a predetermined interval in the longitudinal direction. Two gaps (spaces) 17 for correcting the bending of the tip of the intake pipe 10 are formed between the three central cylindrical bodies 16. Although not shown, the central cylindrical body 16 may be divided at one place or a plurality of three places or more in the longitudinal direction.

  The frame 12 is divided into two half frames 2A and 2B and half cylinders 16A and 16B along a plane (A-A plane) passing through the central axis thereof, and the half frames 2A and 2B divided into two are divided. The coupling flanges 20 are respectively attached to the portions of the half cylinders 16A and 16B that face each other. The frame body 12 is similarly divided into two half cylinder bodies 16A and 16B of the three central cylinder bodies 16 so that the tip of the intake pipe 10 is sandwiched at three locations, and the flanges 20 facing each other are bolt nuts. By tightening, as shown in FIG. 1 and FIG. 2, it is attached to the distal end portion of the intake pipe 10, and an integral frame 12 is configured.

   As shown in FIG. 4, the intake pipe 10 is obtained by armoring with a plurality of iron wires 24 on the outside of the hard polyethylene pipe 22. On the outer periphery of the distal end portion of the intake pipe 10, there is provided a terminal fitting 25 that folds the iron wire 24 outward and fastens and fixes it. The leading edge of the hard polyethylene pipe 22 exposed by folding the iron wire 24 is projected ahead of the tip of the terminal fitting 25.

  As shown in FIG. 4, the terminal fitting 25 is inserted into the fastening fitting 26 for fastening and fixing the iron wire 24 folded outward, the packing receiving fitting 28 connected to the front end side of the fastening fitting 26, and the packing receiving fitting 28. A packing retainer 32 is provided for pressing the worn packing 30. The fastening metal fitting 26, the packing receiving metal fitting 28 and the packing holding metal fitting 32 of the terminal metal fitting 25 are formed so as to have the same maximum outer diameter, and the half cylinders 16A and 16B of the frame 12 sandwich the terminal metal fitting 25. It is like that. Further, the packing retainer 32 of the terminal fitting 25 and the central cylinder 16 (half cylinders 16A, 16B) are fixed so as not to be displaced in the axial direction by a fastening member 34 such as a bolt or other fixing means.

  In FIG. 1, reference numeral 36 denotes a suspension fitting attached to a position near the water intake port 10 a of the central cylindrical body 16 located on the most distal side of the frame body 12 (the side closest to the water intake port 10 a). The frame 12 attached to the tip of the water intake pipe 10 is suspended by a wire (not shown) connected to the suspension fitting 36 and installed at a predetermined position on the bottom of the water. Further, the leading edge of the rigid polyethylene pipe 22 of the intake pipe 10 protrudes ahead of the distal end of the frame body 12 with the frame body 12 attached to the distal end portion of the intake pipe 10 as described above. With such a structure, the tip of the hard polyethylene pipe 22 protrudes directly into the water, so that foreign matters such as shellfish and plankton are less likely to adhere to the water intake port 10a compared to a metal water intake port, and rust does not occur. There are advantages.

  In the intake section structure of the present embodiment, when the frame 12 is attached to the periphery of the distal end portion of the water pipe 10, the distal end portion of the intake pipe 10 has its own weight or bent hook, the weight of the terminal fitting 25, etc. Thus, when bending as shown in FIG. 10 and tilting with respect to the central cylindrical body 16 of the frame body 12, the bending of the intake pipe 10 is corrected by the following method, for example.

  That is, as shown in FIG. 5, the frame body 12 is temporarily combined by disposing the half frame bodies 12 </ b> A and 12 </ b> B that are divided into two around the distal end portion where the bending of the intake pipe 10 occurs. Next, each of the two gaps 17 formed between the three central cylinders 16 of the frame body 12 is passed through a pulling wire 38 and tied to the leading end of the intake pipe 10 where it is bent or hung around. Moored. On the other hand, another pulling wire 39 can be tied or hung around the leading edge (water intake port 10a) of the water intake pipe 10 to be moored. Next, two tension wires 38 are pulled simultaneously in the direction of arrow A, and one tension wire 39 is simultaneously pulled in the direction of arrow B, which is 180 degrees different from the direction of arrow A. A couple of forces is applied to the intake pipe 10 between the mooring point and the mooring point of the pulling wire 39 at the foremost part in a direction to correct the bending of the tip. As a result, the bending of the tip of the intake pipe 10 is corrected, and the frame body 12 is not inclined with respect to the central cylindrical body 16 so that the frame body 12 is substantially parallel. Therefore, the half frame bodies 12A and 12B constituting the frame body 12 are used. The terminal metal fitting 25 is clamped by the half cylinders 16A and 16B constituting the center cylinder 16 in an excellent manner.

  The portion where the pulling wire 39 is moored to the water pipe 10 is not necessarily the most advanced portion of the water intake tube 10, and may be a portion closer to the tip of the water intake tube than the mooring point of the pulling wire 38. It is preferable that the mooring point of the pulling wire 39 is at the most distal portion of the water intake pipe 10 as described above, because the couple becomes larger than that at the other portion and the bending of the water intake pipe 10 is easily corrected. Instead of mooring the pulling wire 39, the intake pipe 10 may be gripped and fixed so as not to be moved by a jig or other means at the portion near the tip of the intake pipe (including the most advanced portion). In addition, as a method of correcting the bending of the distal end portion of the water intake pipe 10, instead of pulling the distal end portion with the pulling wire 38 or in addition to the operation, the hand or an appropriate jig is passed through the gap 17 from the opposite side. The bending force may be corrected by applying a pressing force (pressing force) due to the above, or by forcibly tightening the tip from the outside with the half cylinders 16A and 16B of the center cylinder 16.

  According to the water intake portion structure of the first embodiment, the central cylindrical body 16 constituting the frame body 12 is divided at one or a plurality of locations in the longitudinal direction, and the distal end portion of the intake pipe 10 is between the divided central cylindrical bodies 16. Since the gap 17 for correcting the bend is formed, the force in the direction for correcting the bend can be applied to the tip of the intake pipe 10 through the gap 17. As a result, the bending of the tip of the water intake pipe 10 is corrected, and the frame body 12 is not substantially inclined with respect to the central cylindrical body 16, so that the frame body 12 can be easily attached to the water pipe 10. The number of steps for assembling the intake section structure is reduced, and the cost of the intake section structure can be reduced.

  6A and 6B show a second embodiment of a water intake structure of a water intake pipe according to the present invention, in which FIG. 6A is a partially cutaway side view, and FIG. FIG.

  The difference between the water intake portion structure of the present embodiment and that of the first embodiment is that the central cylinder 16 is divided in one or more places in the longitudinal direction, and the intake pipe 10 is divided between the divided central cylinders 16. Instead of forming the gap 17 for correcting the bending of the center tube 16, a window 40 for correcting the bending of the tip of the intake pipe 10 is provided at one or more locations in the longitudinal direction of one central cylinder 16 constituting the frame 12. Is where it is formed.

  In the example shown in the drawing, windows 40 each having two circular holes are formed at two positions spaced apart from each other at a predetermined interval in the longitudinal direction of the central cylindrical body 16, respectively. Although not shown, the window 40 may be formed of an elliptical hole (including an oval hole), a rectangular hole, or the like. Moreover, you may make it form 1 or 3 or more in one place or 3 or more places of a longitudinal direction. The more the windows 40 are formed in the range in which the allowable strength of the central cylindrical body 16 is maintained, it becomes easier to correct the bending of the tip of the intake pipe 10 in various directions, and the correction workability is improved. preferable.

  When assembling the water intake section structure of the present embodiment, if the leading end of the water intake pipe 10 is bent, the half of the frame body 12 divided in half is formed around the tip of the water intake pipe 10 where the bending occurs. The frame bodies 12A and 12B are arranged so as to face each other so that an annular gap through which the pulling wire 38 can pass is formed between the half cylinder bodies 16A and 16B of the half cylinder body 16 and the intake pipe 10. 12 is temporarily combined. Next, the tension wire 38 is passed through the window 40 formed in the central cylindrical body 16 and tied to the distal end portion of the window 40, or is hung around. On the other hand, the tension wire 39 is tied to the portion closer to the tip of the intake pipe than the anchor point of the tension wire 38 of the intake pipe 10 or is moored by hanging around. Next, the two pulling wires 38 and 39 are pulled in opposite directions, and a couple of forces in the direction of correcting the bending of the tip end portion is applied to the intake pipe 10 between the mooring points of the two pulling wires 38 and 39. 10 to correct the bending of the tip. Instead of pulling the tip portion with the pulling wire 38 or in addition to the operation, a pushing force (pressing force) by a hand or an appropriate jig is applied through the gap 17 from the opposite side, and further, the center tube body For example, the bending of the tip portion may be corrected by forcibly tightening the tip portion from the outside with the sixteen half cylinders 16A and 16B. Since other configurations are substantially the same as those of the first embodiment, description thereof is omitted.

  According to the intake pipe structure of the intake pipe of the second embodiment, a window 40 that corrects the bending of the tip of the intake pipe 10 is formed at one or more locations in the longitudinal direction of the central cylinder 16 that constitutes the frame body 12. Therefore, a force in a direction to correct the bending can be applied to the tip of the intake pipe 10 through the window 40. As a result, the bending of the tip of the water intake pipe 10 is corrected, and the frame body 12 is not substantially inclined with respect to the central cylindrical body 16, so that the frame body 12 can be easily attached to the water pipe 10. The number of steps for assembling the intake section structure is reduced, and the cost of the intake section structure can be reduced.

It is a partial cutaway side view showing a 1st embodiment of a water intake part structure of a water intake pipe concerning the present invention. It is a front view of the intake part structure of FIG. FIG. 2 is a front view showing a state before the frame body is attached to the water pipe in the water intake section structure of FIG. 1. FIG. 2 is a partially cutaway side view showing, in an enlarged manner, a portion near the tip in a state where a frame is attached to a tip of a water pipe in the water intake portion structure of FIG. 1. FIG. 2 is a schematic diagram showing an example of a method for correcting the bending of the tip of the intake pipe in the intake section structure of FIG. 1. The 2nd Embodiment of the intake part structure of the intake pipe which concerns on this invention is shown, (a) is the partially cutaway side view, (b) is an XX arrow expanded sectional view of (a). . It is a partially cutaway side view which shows the water intake part structure of the conventional water intake pipe. It is a front view of the intake part structure of FIG. FIG. 8 is a front view showing a state before the frame body is attached to the water pipe in the water intake portion structure of FIG. 7. FIG. 8 is a partially cutaway side view showing, in an enlarged manner, a state where the tip end portion of the water intake pipe is inclined when the frame body is attached to the tip end portion of the water pipe in the water intake portion structure of FIG. 7.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Intake pipe 10a Intake port 12 Frame body 12A Half frame body 12B Half frame body 14 Water bottom 16 Central cylinder body 16A Half cylinder body 16B Half cylinder body 17 Gap 18 Enclosure frame 20 Flange 22 Hard polyethylene pipe 24 Iron wire 25 Terminal Metal fitting 26 Tightening fitting 28 Packing receiving fitting 30 Packing 32 Packing holding fitting 34 Tightening member 36 Lifting fitting 38 Tension wire 39 Tension wire 40 Window

Claims (2)

A frame that holds the intake port of the intake pipe away from the water bottom is attached around the tip of the intake pipe, and the frame is formed by combining a central cylinder and a frame member around the frame. The frame body is divided into two parts by a plane passing through the central axis, and the half divided frame body is clamped by clamping the tip of the intake pipe with the half cylinder body. In the intake part structure of the intake pipe attached to the intake pipe, the central cylinder constituting the frame is divided in one or more places in the longitudinal direction, and the gap and intake pipe between the divided central cylinders At the tip of
Anchor the ear and correct the tip bending by applying force, or by hand or jig
The bending of the tip is corrected by tightening the tip with a pushing force or half cylinder of the center tube.
Intake part structure of intake pipes, characterized in that positive to. A frame is attached around the tip of the intake pipe to hold the intake of the intake pipe away from the bottom of the water, and the frame is composed of a central cylinder and a frame member around it. The frame body is divided into two parts by a plane passing through the central axis, and the half divided frame body is clamped by clamping the tip of the intake pipe with the half cylinder body. In the intake part structure of the intake pipe attached to the intake pipe, a window is formed in one or a plurality of locations in the longitudinal direction of the central cylindrical body constituting the frame body, and a tensile wire is provided at the tip of the window and the intake pipe Moored and applied force
To correct the bending of the tip, or the pushing force by the hand or jig or the center tube
A water intake structure of a water intake pipe, wherein the bending of the front end is corrected by tightening the front end with a half cylinder of the body .

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