JPH06702Y2 - Drainage pipe with hose on embankment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a drainage pipe using a hose used when draining internal water over a bank to a river on the surface of the bank.

[Prior Art] Conventionally, in a drainage pumping station for draining internal water, a water reservoir is provided in an area where the internal water is generated, and the internal water guided from the water reservoir to a water intake tank through a conduit is pumped up from the back of the embankment to the front side. It is discharged to the flow path of the river through the drainage pipe provided.

Conventionally, pumps and drainage pipes for such drainage pump stations have been permanently installed, and pipes made of a hard material, such as steel pipes, have been used for the drainage pipes. In contrast to such a drainage station for internal water, which requires enormous equipment costs for pumps and related equipment, its mobility is extremely low. In addition, since conventional drainage pipes are steel pipes, the installation and maintenance of steel pipes are extremely time-consuming and costly, and since the dikes are not opened, maintenance of the dikes can be performed easily only at the drainage pump station. There was a problem that I could not.

The submersible motor pump and drain pipe are installed only when it is necessary to eliminate the problem of the permanent drainage pump station as described above and to permanently drain the internal water by permanently installing the pumping pipe as a permanent drainage pump station. A method of draining inland water has been developed. One proposal of this method is to use a hose capable of folding and winding a part or all of the drainage pipe.

Even in this case, it is preferable that a steel pipe or the like is used as a pipe made of a hard material at a portion beyond the top end and is solidified with concrete to open the top end on the road. Then, while connecting the hose to the back side of the embankment following the steel pipe at the top end, the hose is connected to the front side of the embankment and has a drain nozzle installed at the end of the hose to discharge into the drain groove on the front side of the embankment.

[Problems to be solved by the device]

As described above, using the top end pipe as a steel pipe, arrange a pipe connecting the steel pipe to the back side of the embankment, and arrange the pipe so that it goes down to the embankment front side, and discharge the end of this embankment front side pipe. The method of discharging the inner water from the nozzle has the following problems.

(1) The above-mentioned top pipe is a steel pipe, the surrounding area is solidified with concrete, and the levee pipe is fixed because the road is open on the road, while the permanent pump pipe is fixed. When a hose that can be folded and wound between the pipe and the top pipe is used for piping, it is difficult to mount the hose if the length of the hose is set along the back of the embankment.

(2) In order to make the hose laying work extremely easy, if the hose length is lengthened, a part of the hose bends and dents during water passage, causing kinks that reduce the cross-sectional area of drainage. Is reduced.

(3) Further, if the cross-sectional area of passage of the drainage is reduced, the discharge pressure of the submersible motor pump rises, so the hose easily breaks at the kink portion.

The present invention has been made in view of the above-mentioned points, and by solving the above-mentioned conventional problems and setting the relationship between the length of the hose attachment portion and the actual hose length to a predetermined relationship, laying work can be facilitated. Another object of the present invention is to provide a drainage pipe using a hose that can be wound without reducing the amount of drainage due to generation of kinks and damaging the hose.

[Means for Solving the Problems]

In order to solve the above problems, the present invention is to install a pumping pipe permanently in the intake tank installed close to the back of the dike, and to permanently install a top pipe of hard material at the top of the dike and fold the pumping pipe and the top pipe. The hose is connected by a hose that can be wound, and the length of the hose is longer than the installation length along the embankment back from the pumping pipe to the top pipe by the diameter of the hose or more. The deviation from the straight line connecting the pumping pipe and the top pipe is about four times the diameter of the hose.

[Action]

By constructing the drain pipe using the hose as described above, when the submersible motor pump is started, the water in the intake tank is discharged through the hose and the top pipe, and the hose is pressurized by this water flow into a circular shape. At this time, since the displacement amount δ of the portion of the hose that is displaced is set to be approximately four times the diameter D of the hose, the displacement amount δ does not increase any further, and there is a risk of causing a kink in the hose 13. There is no. Also,
Since the length of the hose is limited, the ease of laying the hose is not lost.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical cross-sectional view of a drainage section in which a drainage pipe using a hose according to the present invention is laid, which crosses the bank in the longitudinal direction.
FIG. 2 is a plan view of this drainage section. The water reservoir 1 is provided with a water intake tank 3 provided with a screen 2 on the inflow side.
The lower end of the pumping pipe 5 fixed to the upper wall 4 opens near the bottom of the water intake tank 3. The lid 6 above the pumping pipe 5 can be opened and closed. When emergency drainage is necessary, the carried submersible motor pump 7 is mounted on the sole plate of the pumping pipe 5 with the lid 6 opened. A valve 9 is provided at the discharge port 8 above the pumping pipe 5.
The conical pipe 11 is connected via the
A hose joint 12a is provided in the. The illustrated hose 13 is not permanently installed in the drainage pump station of the water reservoir. A hose joint 12b that is connected to the hose joint 12a of the conical pipe 11 is provided at one end of the hose 13, and a hose joint 14a is provided at the other end.

A top pipe 16 is provided at the top of the bank 15. The top pipe 16 is composed of a straight pipe 17, bends 18 and 19, and a discharge nozzle 21, and is permanently installed. The straight pipe 17 is horizontally embedded in the uppermost part of the bank 15 so as to extend inside and outside the river, and its upper surface is open on the road. At both ends of the straight pipe 17, one protrudes to the back side of the embankment 15 and the other protrudes to the front side, and the vents 18 and 19 are connected to the respective tips, and the bend 18 is formed.
Is a hose joint 14 connectable to the hose joint 14a.
b is attached, and the band 19 has a discharge nozzle 21
Is fixed. A drain groove 22 is provided at the tip of the discharge nozzle 21 so as to descend to the river flow path.

Of the hose 13 arranged in the inner corner made of the concrete block or the cast concrete of the finishing material of the lining method 15-1, 15-2, 15-3 of the levee 15 and the back booths 15-4, 15-5. Concrete receiving portions 23-1, 23-2 are placed so as to receive the curved portions 13-1, 13-2.
In addition, the corners of Uraho 15-1 and Ura Kodan 15-4 and Uraho 15
-2 and the corner of the back booth 15-5 are curved portions 13- of the hose 13.
3 and 13-4 are formed to be smooth, and are preliminarily rounded so as not to damage the hose 13 when the hose 13 is installed. A positioning protrusion 24 having a groove into which the hose 13 is fitted is provided in the back booth 15-5 so that the hose 13 can be positioned. The hose 13 is connected by a hose joint 13a between the positioning protrusions 24 and 24 in the back step 15-5.

The hose 13 is a hose that can be folded and wound, for example, a soft vinyl chloride hose containing synthetic fibers, etc., and is knitted in a tubular shape mainly with fibers. The length of the hose 13 is the hose joint 12a at the outlet of the conical pipe 11 connected to the discharge port 8 of the pumping pipe 5.
To the hose joint 14 at the lower end of the bend 18 of the top pipe 16
From the straight line connecting the hose joint 12a of the pumping pipe 5 and the hose joint 14b of the top pipe 16 when viewed from above with the hose 13 attached, which is longer than the length of the hose 13 up to b by the diameter D or more. The deviation δ (see FIG. 2) is approximately four times the diameter D of the hose 13.

The eccentric portion of the hose 13 is provided between the lower hose joint 12b and the lower positioning protrusion 24 so as to be as horizontal as possible like a back step 15-4. As shown in FIG. 2, the concrete receiving part 23-1 is a levee back connecting the outermost hose joint 12a and the hose joint 14b so that the displaced hose 13 part does not come off from the concrete receiving part 23-1. Extra hose 1 by B> δ from the straight line along
It is set larger than the arrangement range of No. 3.

For emergency drainage, the wound hose 13 is arranged as shown in FIGS. 1 and 2. In this case, the hose 13 is in a state of being flatly folded without passing water, but the portion of the hose 13 between the lower positioning protrusion 24 and the hose joint 14b of the bend 18 of the top pipe 16 has this positioning protrusion. Since there is 24, it becomes linear according to the laying, and the lower positioning protrusion 24 and the conical tube 11
Since the hose 13 between the hose joint 12a and the hose joint 12a is longer than the length along the back of the embankment, the hose 13 is laid so as to spread from the hose 13 in the center of the plurality of hoses 13 toward both sides. To do.

When the submersible motor pump 7 is started, the water in the water intake tank 3 is sucked in by the submersible motor pump 7 to be accelerated and pressure-increased, and the water of the embankment surface is passed through the pumping pipe 5, discharge port 8, valve 9, conical pipe 11, hose 13, and top pipe 16. It is discharged to the drain 22. The passage of water pressurizes the hose 13 to form a circular shape. At this time, the portion of the hose 13 to be displaced can be set to have a displacement amount δ≈4D in advance. However, since the displacement cannot increase beyond the displacement amount δ, the hose 13 is kinked. There is no fear of

[Effect of device]

As described above, according to the present invention, the pumping pipe and the top pipe are permanently installed, the positions of both ends of the hose are constant, and the length of the hose is between the pumping pipe and the top pipe along the back of the embankment. Since the length of the hose is limited longer than the shortest distance, it is possible to obtain an excellent effect that a kink does not occur in the hose, the drainage is reduced, the hose is not damaged, and the hose is not easily laid. .

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of the drainage section in which a drainage pipe using a hose according to the present invention is laid, crossing the longitudinal direction of the bank, and FIG. 2 is a plan view of the drainage section. In the figure, 1 ... water reservoir, 2 ... screen, 3 ... water intake tank,
4 ... Top wall, 5 ... Pumping pipe, 6 ... Lid, 7 ... Submersible motor pump, 8 ... Discharge port, 9 ... Valve, 11 ... Conical pipe, 12a, 12b ... Hose fitting, 13 ‥‥hose,
13a ... hose fittings, 14a, 14b ... hose fittings, 15 ... levees, 15-1, 15-2, 15-3.
Back method, 15-4, 15-5 ... Back small step, 16 ... Top pipe, 17 ... Straight pipe, 18, 19 Bend, 21 ... Discharge nozzle, 22 ... Drain groove, 23-1 , 23-2 ... concrete receiving part, 24 ... positioning protrusion.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 999999999 Denki Kogyo Co., Ltd. Machinery Co., Ltd. 1-5 Omorikita, Ota-ku, Tokyo (71) Applicant 999999999 Rooster Island Co., Ltd. 1-1-1 Miyata-cho, Takatsuki-shi, Osaka No. 8 (71) Applicant 999999999 Hitachi, Ltd. 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo (71) Applicant 999999999 Mitsubishi Heavy Industries, Ltd. 2-5-1 Marunouchi, Chiyoda-ku, Tokyo (72) Inventor Yoichi Sekiya 1-3-1 Otemachi, Chiyoda-ku, Tokyo Within the Kanto Regional Construction Bureau, Ministry of Construction (72) Inventor Yoshifumi Ogawa 1-3-1, Otemachi, Chiyoda-ku, Tokyo Within the Kanto Regional Construction Bureau, Ministry of Construction (72) Inventor Noriyoshi Karasawa 1-3-1, Otemachi, Chiyoda-ku, Tokyo, Kanto Regional Construction Bureau, Ministry of Construction (72) Creator Kuniyuki Shinpei Tokyo Metropolitan Univ. Subdivision Hanedaasahi Town, 11th in the No. 1 Ebara Corporation

Claims (1)

[Scope of utility model registration request] 1. A hose capable of folding and winding the pumping pipe and the crown pipe, in which a pumping pipe is permanently installed in a water intake tank provided close to the back of the bank and a crown pipe of hard material is permanently installed in the crown end of the bank. The length of the hose is longer than the mounting length along the back of the dike from the pumping pipe to the top pipe by the diameter of the hose or more, and the hose is attached to the pumping pipe when viewed from above. A drainage pipe using a hose in a dike, wherein the deviation from a straight line connecting the pipe and the top pipe is approximately four times the diameter of the hose.