JP3677347B2 - Emergency water intake device for water pipe and its installation method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to an emergency water intake device for a water pipe and a method for installing the same in order to use stagnant water in the water pipe such as a water pipe during a disaster.
[0002]
[Prior art]
Recently, disasters such as earthquakes, typhoons, heavy rains and landslides caused by these have occurred extensively and frequently in various parts of Japan. And due to these disasters, power outages and water outages occur, and it takes a lot of time to recover, and securing electricity and tap water during that time has become a major problem. In particular, water is directly related to life and is necessary for a long time, and it is absolutely necessary to secure it at an early stage.
[0003]
When a water pipe, which is a water distribution pipe, is damaged due to a disaster, the emergency shutoff valve of the water reservoir operates to stop the supply of water from the reservoir, prevent secondary disasters, and distribute the water until the damaged water pipe is restored. Will stop. In the conventional emergency water supply system, the water supply vehicle was dispatched and supplied the minimum amount of water, but in the case of a large-scale disaster such as the Great Hanshin Earthquake, the water supply vehicle could not actually be deployed. Relied on human power for a while.
[0004]
[Problems to be solved by the invention]
However, in the conventional emergency water supply system as described above, there is a possibility that even drinking water cannot be secured for a considerable time immediately after the disaster, and the life of the victim is exposed to a dangerous state. In addition, the minimum amount of water necessary for daily life, such as hand-washing water and cooking water, cannot be ensured at all.
[0005]
If the water pipe is damaged due to a normal disaster, the emergency shutoff valve of the reservoir is activated, the supply of water from the reservoir is stopped, and the water distribution is stopped until it is restored. However, the running water pipe is piped along the ground surface at a predetermined depth (for example, 1.2 to 2 m) along the topography or overcast, and the emergency shutoff valve of the reservoir is activated or the running water pipe is Even if the part breaks down and water flows out, there is water staying in the water pipe corresponding to the valley of the waves. However, there is no utilization system for the high-quality water that has stayed in the water flow pipe in the past, and there is no actual idea to use it, and its utilization is desired.
[0006]
Therefore, the present invention has been made in view of the above circumstances, and even if water distribution from the reservoir stops due to a disaster, an emergency water intake device for a water pipe that can use high-quality water remaining in the water pipe and It is an object to provide the installation method.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the emergency water intake device of the present invention is installed in a water-sealed state at a substantially lowermost point portion of the water flow pipe located in the valley of the water flow pipe, and the laying state of the water flow pipe becomes wavy. The emergency water intake device includes an enclosing case, a through-hole communicating with the flowing water pipe and the inside of the enclosing case, a branch pipe communicating with the enclosing case, and an on-off valve provided on the branch pipe. And a joint portion that is provided at the distal end portion of the branch pipe and that can connect an external pipe body.
According to this feature, good quality water remains in the troughs of the undulating water pipe even when the water is cut off, and the pump is simply connected to the branch pipe of this emergency water intake device and the open / close valve is opened. Since the water can be pumped out, this high-quality residual water can be easily obtained without water pressure in the water pipe.
[0008]
In the emergency water intake device of the present invention, it is preferable that the branch pipe branched from the enclosing case is provided so as to rise upward along the side surface of the enclosing case.
According to this configuration, the branch pipe and the pipe body can be easily connected.
[0009]
In the emergency water intake device of the present invention, it is preferable that the branch pipe is provided so as to extend from the bottom surface of the enclosing case and rise upward.
According to this configuration, by extending the branch pipe from the bottom surface of the enclosing case, water remaining in the valley portion can be pumped out.
[0010]
In the emergency water intake device of the present invention, it is preferable that a drain valve is provided in a lower portion of the branch pipe rising upward.
According to this configuration, the water can be discharged to the outside by opening the drain valve before pumping up water with a pump or the like, and high-quality water can be obtained. The drain valve also has a function of discharging chips and the like when the emergency water intake apparatus is installed due to unrestricted water.
[0011]
In the emergency water intake apparatus of the present invention, it is preferable that the tip of the branch pipe as the joint portion of the pipe body and the on-off valve are exposed in the manhole, and the manhole is covered with a lid that can be opened and closed.
According to this configuration, when the emergency water intake device is not used, the manhole is closed with a lid so that it does not normally get in the way, and when used, the lid is opened to connect the pipe body to the branch pipe and to open / close the valve. The opening operation can be performed easily.
[0012]
In the emergency water intake device of the present invention, it is preferable that an air valve is installed in the enclosing case so that the inside of the enclosing case and the inside of the water pipe can communicate with the outside air.
According to this configuration, since the air valve is previously attached to the emergency water intake device, the water and the air can be easily replaced when the water is pumped, and the water can be discharged by the pump in any situation.
[0013]
In the emergency water intake device of the present invention, a space is formed above and below the enclosing case with the water pipe interposed therebetween, the two spaces are connected, an air valve in the upper space, and a branch pipe in the lower space Are preferably connected.
According to this configuration, since air is sucked from the upper space and water can be pumped from the lower space, there is no problem of drawing air when the pump is pumped with water.
[0014]
In the emergency water intake apparatus installation method of the present invention, the laying state of the water flow pipe is wavy, and an enclosing case having a branch pipe with an open / close valve is provided at the lowest point of the water flow pipe located in the valley of the wave water flow pipe. Installed in a water-sealed state with respect to the water pipe, cut out the water pipe in a water-sealed state using the enclosing case, communicate the water pipe and the branch pipe, and branch the residual water in the water pipe It is characterized by enabling the pumping to the outside by opening the open / close valve of the pipe.
According to this feature, in addition to the function and effect of the first aspect, the emergency water intake device can be easily attached by the continuous water construction method. Moreover, the installation position of this emergency water intake device can be easily found by looking at the water pipe laying map.
[0015]
In the emergency water intake apparatus installation method of the present invention, it is preferable that an air valve capable of communicating with the outside air in the surrounding case is installed in the surrounding case in advance.
According to this configuration, when the enclosing case is installed and the flowing water pipe is removed, the inside of the enclosing case and the flowing water pipe can communicate with the outside air via the air valve, so that it is not necessary to separately perform an air valve mounting operation.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings by way of embodiments.
[0017]
FIG. 1 is a flow sheet diagram of a water distribution facility where an embodiment of the present invention is installed, and FIGS. 2 and 3 are conceptual diagrams in an emergency water intake section of a water pipe showing an embodiment of the present invention. In FIG. 2, 1 indicates an emergency water intake device for a water pipe (hereinafter simply referred to as an emergency water intake device). In this emergency water intake device 1, the laying state of the water pipe 2 which is a water distribution pipe is wave-like as shown in FIG. A branch pipe 3 is provided at a predetermined portion of the water flow pipe 2 positioned almost at the bottom of the valley, and the branch pipe 3 is provided with a predetermined height extending in the vertical direction and a water intake valve 4 is provided at a predetermined position of the branch pipe 3. Is.
[0018]
The drainage pipe 2 is provided with a gate valve 6 and the like at the outlet so that water distribution can be shut off in the reservoir 5 in an emergency, and also at a predetermined interval on the downstream side of the drainage pipe 2 as shown in FIGS. An emergency shut-off gate valve 6 is provided (for example, at intervals of 100 to 200 m). Since this flowing water pipe 2 is buried and piped in a 1.2 to 1.5 meter covering according to the terrain, its shape becomes a wave shape along the ground surface. Looking at between A-B and B-C in FIG. 1, valleys D and E are formed in the flowing water pipe 2, so that one of the flowing water pipes 2 is damaged due to a disaster and shut off by the gate valve 6 and distributed. Even if it disappears, in the water flow pipe 2 in the meantime, high-quality water collects around these valleys D and E. The above-mentioned contents are the same when a large-diameter water pipe 2 is branched from a relatively small-diameter water pipe 2 and a gate valve is installed, and high-quality water is also contained in the relatively small-diameter water pipe 2. Has accumulated.
[0019]
The principle of fluid extraction will be described with reference to FIGS. 2 and 3. First, when the local part W of the water pipe 2 is damaged due to a disaster such as an earthquake as shown in FIG. 2, it is positioned above the local part W of the water pipe 2. Although the water which flows out will flow out from this local part W, it is thought that the water located in the lower part remains. In this case, the water intake valve 4 is opened, and the remaining water can be pumped from the branch pipe 3 of the emergency water intake apparatus 1 at the lowest position using the pump P. This is because the above-mentioned damaged local W serves to communicate the inside of the water pipe 2 and the outside air, and the atmosphere is replaced with the water in the water pipe 2 so that water can be easily pumped to the outside. That is why.
[0020]
The state shown in FIG. 3 is a case in which the emergency shut-off gate valve 6 is closed at the time of a disaster such as an earthquake, or the water remaining in the water flow pipe 2 is sealed for some reason. Attempts to pump up water cannot be pumped because water and air are not replaced. Since this emergency water intake device 1 has an air valve 20, when water in the water pipe 2 is pumped up from the branch pipe 3 by the pump P, the atmosphere flows from the air valve 20 to the water pipe 2 as shown in FIG. 3. The water can easily be pumped to the outside by entering the inside and replacing the air with the water in the water pipe 2.
[0021]
Here, the installation method of the emergency water intake apparatus 1 and the structure of the apparatus will be described in detail with reference to FIGS. 4 to 8. As shown in FIG. 4, the water pipe 2 is surrounded by the water pipe 2 from above and below. The upper and lower divided enclosing case 21 is attached in a water-sealed state. The enclosing case has a substantially cylindrical shape in the vertical direction, and a predetermined space S is provided between the bottom surface of the enclosing case 21 and the flowing water pipe 2, and a space T is provided above the flowing water pipe 2. An open / close case 22 is attached to the upper part of the enclosing case 21, and a work case 23 is attached to the upper part of the open / close case 22. Note that a mechanism having a predetermined function is appropriately attached to the upper portion of the work case 23.
[0022]
The open / close case 22 is provided with a gate valve 24 that partitions the enclosure case 21 and the work case 23. A rod 25 is attached to the gate valve 24, and the gate valve 24 can be used to communicate and block the enclosure case 21 and the work case 23 by operating the rod 25. A housing 7 is accommodated when the gate valve 24 is withdrawn from the opening / closing case 22, and is integrally attached to the peripheral surface of the opening / closing case 22.
[0023]
Reference numeral 8 denotes a drill as a drilling means for moving up and down in the enclosing case 21, the open / close case 22, and the work case 23 to drill the water pipe 2, and the outer diameter thereof is smaller than the inner diameter of the water pipe 2. Further, a rotating shaft 9 that is rotated by a motor or the like is provided above the rotating shaft 9. Further, as shown in FIG. 8, a hole 10 is provided on the bottom surface of the enclosing case 21, and a branch pipe 12 having a water intake valve 11 that is an open / close valve that can be opened and closed from the hole 10 is vertically upward from below. It is extended to. Reference numeral 26 denotes a drain valve.
[0024]
In order to perform the operation of attaching the emergency water intake device 1 to the water flow pipe 2 after each case and each member are installed and fixed in order in a water-sealed state on the water flow pipe 2, the rod 25 is operated as shown in FIG. The gate valve 24 is opened to allow the enclosure case 21 and the work case 23 to communicate with each other. Then, while appropriately rotating the rotary shaft 9 with a driving device (not shown), the drill 8 is lowered to perforate the water pipe 2 to provide the through hole 14.
[0025]
Next, when the drill 8 completely penetrates the water pipe 2, the cut piece of the through hole 14 of the water pipe 1 is accommodated in the drill 8, and the drill 8 is raised. Thereafter, the rod 25 is operated to close the gate valve 24, and the communication between the enclosing case 21 and the work case 23 is blocked (FIG. 4).
[0026]
Subsequently, as shown in FIG. 5, the work case 23 is separated from the open / close case 22, and the drill 8 is detached from the work case 23, and is instead formed on the inner lid 15 and the rotary shaft 9 (or another lift shaft). The work case 23 is attached to the open / close case 22 again, and the gate valve 24 is opened by operating the rod 25 to allow the enclosure case 21 and the work case 23 to communicate with each other. Then, this time, the rotary shaft 9 is operated as a press-fitting means to lower the inner lid 15, press-fit into a predetermined position on the upper inner surface of the enclosing case 21, and then raise the rotary shaft 9. Remove the bond.
[0027]
Finally, as shown in FIG. 6, the opening / closing case 22 and the work case 23 are removed, and the lid member 17 is attached, whereby the installation of the emergency water intake device to the water flow pipe 2 is completed. For this reason, it becomes possible to attach the emergency water intake device 1 without stopping water supply without stopping the water supply in the water flow pipe 2.
[0028]
FIG. 7 shows a partial cross-sectional view of the inner lid 15. The inner lid 15 has a front and back through hole 27 formed substantially at the center, and an air valve 16 is provided above the through hole 27. Installed. Reference numeral 13 denotes an annular projecting seal ring.
[0029]
As shown in FIG. 8, the emergency water intake device 1 assembled in this way has a branch pipe 12 as a water intake pipe and a water intake valve attached to the upper part of the manhole 30 partially backfilled, for example. 11 and the air valve 16 are exposed so that the manhole is normally closed by a lid 31 that can be opened and closed. The drain valve 26 is used not only for discharging impurities generated during the continuous water construction work, but also for discharging the condensed water that has settled downward before pumping up the water. Reference numeral 29 denotes a cap. By removing this cap, this portion becomes a joint portion of the hose.
[0030]
In this way, the emergency water intake device 1 installed at almost the lowest point in the valley of the water pipe is generally not used at all times. However, the flow of water in the water pipe is caused by a gate valve for damage such as an earthquake or emergency shutoff. When it stops, the lid 31 is opened as shown in FIG. 9, and the water supply hose 28 is connected instead of the cap 29 of the branch pipe 12. In general, the water in the branch pipe 12 that does not flow for a long time is in a turbid water state. Therefore, after the drain valve 26 is opened and the tangled water flows out to the outside, the intake valve 11 is opened and the pump P is used. Pump out high quality residual water in the water pipe 2.
[0031]
In this embodiment, as shown in FIG. 3, it is assumed that there is no place where the air flows into the water pipe 2 separately, and the emergency water intake device 1 and the water flow from the air valve 16 according to the amount of water drawn by the pump P. Air flows into the tube 2 and water and air are replaced. In the case of this embodiment, the air inflow portion and the water take-out portion are separated above and below the water pipe 2, that is, the air valve 16 is provided in the upper space T and the branch pipe 12 is provided in the lower space S. Even if water is strongly pumped by the pump P, air from the air valve 16 is not sucked by the pump P via the branch pipe 12, and extremely stable water pumping is possible.
[0032]
FIG. 10 shows another embodiment, in which the air valve 16 is previously attached to the enclosing case 22 so that the inside and the atmosphere can communicate with each other. If the air valve 16 is attached to the enclosing case 22 as described above, maintenance of the air valve 16 during the continuous water operation is not necessary, and it does not interfere with the installation work of the emergency water intake device performed with the continuous water operation.
[0033]
Further, as in this embodiment, the branch pipe 12 can be branched from the side with respect to the enclosing case 22, and separated from the drain branch pipe 12 ', and the drain branch pipe 12'. The drain valve 26 is not necessarily provided.
[0034]
Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.
[0035]
For example, in the embodiment, a large case in which the water pipe is sandwiched from above and below by the flange portion is shown as the enclosing case, but the enclosing case used in the description of the present invention is not limited to this, and a small case such as a saddle is also included. It is included in the definition of the enclosing case used in the present invention.
[0036]
【The invention's effect】
The present invention has the following effects.
[0037]
(A) According to the invention of claim 1, good quality water remains in the troughs of the undulating water pipe even when the water is cut off, and the pipe is connected to the branch pipe of the emergency water intake device. Since the water can be pumped out by simply opening the pump, this high quality residual water can be easily obtained without water pressure in the water pipe.
[0038]
(B) According to the invention of claim 2, the branch pipe and the pipe body can be easily connected.
[0039]
(C) According to the invention of claim 3, by extending the branch pipe from the bottom surface of the enclosing case, water remaining in the valley portion can be pumped out.
[0040]
(D) According to the invention of claim 4, before the water is pumped up by a pump or the like, the drain valve is opened and the water can be discharged to the outside, so that good quality water can be obtained. The drain valve also has a function of discharging chips and the like when the emergency water intake apparatus is installed due to unrestricted water.
[0041]
(E) According to the invention of claim 5, when the emergency water intake device is not used, the manhole is closed with a lid so that it is not normally disturbed. And the opening operation of the on-off valve can be easily performed.
[0042]
(F) According to the invention of claim 6, since the air valve is previously attached to the emergency water intake device, the water and air can be easily replaced at the time of pumping out the water. Can drain water.
[0043]
(G) According to the invention of claim 7, since air is sucked from the upper space and water can be pumped from the lower space, there is no problem of drawing air when the pump is pumped with water.
[0044]
(H) According to the invention of claim 8, in addition to the function and effect of claim 1, the emergency water intake device can be easily attached by the continuous water construction method. The installation position of the emergency water intake device can be easily determined by looking at the water pipe laying map.
[0045]
(I) According to the invention of claim 9, when the enclosing case is installed and the flowing water pipe is removed, the inside of the enclosing case and the flowing water pipe can communicate with each other through the air valve. There is no need to do.
[0046]
[Brief description of the drawings]
FIG. 1 is a flow sheet in which a water flow pipe distributed by a natural fall from a reservoir is waved along the surface of the earth.
FIG. 2 is a conceptual diagram of a first mode in an emergency water intake of the present invention.
FIG. 3 is a conceptual diagram of a second mode in the emergency water intake section of the present invention.
FIG. 4 is a partially broken cross-sectional view showing the installation work of the emergency water intake device in the embodiment.
FIG. 5 is a partially broken cross-sectional view subsequent to FIG.
6 is a partially broken sectional view subsequent to FIG.
FIG. 7 is a partially broken sectional view of the inner lid 15 of the embodiment.
FIG. 8 is a partially broken cross-sectional view of the embodiment when the emergency water intake apparatus is completely installed.
FIG. 9 is a partially broken sectional view showing a use state of the emergency water intake device.
FIG. 10 is a partially broken sectional view of an emergency water intake apparatus according to another embodiment corresponding to FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Emergency water intake 2 Flow pipe 3 Branch pipe 4 Water intake valve 5 Reservoir 6 Gate valve 7 Housing 8 Drill 9 Rotating shaft 10 Hole 11 Water intake valve (open / close valve)
12 Branch pipe 12 'Branch pipe 15 Inner cover 16 Air valve 20 Air valve 21 Enclosing case 22 Open / close case 23 Work case 24 Gate valve 25 Rod 26 Drain valve 27 Through hole 29 Cap 28 Water supply hose (pipe)
30 Manhole 31 Lid D, E Valley W Local P Pump T Space S Space

Claims (9)

The laying state of the water pipe becomes wavy, and is an emergency water intake device installed in a water-sealed state at almost the lowest point of the water water pipe located in the valley of the wave water flow pipe. A through-hole communicating with the flowing water pipe and the surrounding case, a branch pipe communicating with the surrounding case, an on-off valve provided in the branch pipe, and an external tube provided at the tip of the branch pipe An emergency water intake device, characterized in that it has a joint part that can be connected. The emergency water intake device according to claim 1, wherein the branch pipe branched from the enclosing case is provided so as to rise upward along the side surface of the enclosing case. The emergency water intake apparatus according to claim 2, wherein the branch pipe is provided so as to extend from the bottom surface of the enclosing case and rise upward. The emergency water intake device according to claim 3, wherein a drain valve is provided at a lower portion of the branch pipe rising upward. The emergency water intake device according to any one of claims 1 to 4, wherein a distal end of a branch pipe as a joint portion of the tubular body and an on-off valve are exposed in a manhole, and the manhole is covered with an openable / closable lid. . The emergency water intake apparatus according to any one of claims 1 to 5, wherein an air valve is installed in the enclosing case so that the inside of the enclosing case and the flowing water pipe can communicate with outside air. 7. The enclosing case is formed with a space above and below the flowing water pipe, the two spaces are connected, an air valve is connected to the upper space, and a branch pipe is connected to the lower space. Emergency water intake device as described in. The laying state of the water pipe becomes wavy, and an enclosing case having a branch pipe with an on-off valve is provided in a water-sealed state with respect to the water pipe at the lowest point of the water pipe located in the valley of the wave water pipe. Installed, cut out the water pipe in the sealed state using this enclosing case, let the water pipe and the branch pipe communicate with each other, and pumped the residual water in the water pipe to the outside by opening the on-off valve of the branch pipe An emergency water intake installation method characterized by making it possible. The emergency water intake apparatus installation method according to claim 8, wherein an air valve capable of communicating with the outside air is installed in advance in the enclosing case.

Images