JPS6020687Y2 - emergency water storage device - Google Patents

Description

[Detailed description of the invention] This invention is an emergency water storage device that secures drinking water in the event of a water outage that occurs in an emergency such as an earthquake, and more specifically, it is used by being incorporated into a water supply pipe or water supply pipe. Regarding emergency water storage devices.

A particular problem with such devices is that the water that flows into the water storage tank, which is the main body of the water storage device, is not discharged uniformly.
A portion of the inflow water stays in the water tank for a long time, causing the water to spoil due to lack of residual chlorine and become unusable for drinking.

Furthermore, if the water tank is directly connected to the water pipe, there is the inconvenience of having to cut off the water in a certain area when it becomes necessary to stop the flow of water to the water tank for inspection or the like.

This idea was created in view of the above circumstances, and requires the following configuration.

■ A water tank that is composed of a pipe body and upstream and downstream end plates, and is installed with the pipe axis direction of the pipe body horizontal, and ■ It is installed through the center of the upstream end plate of the water tank. (1) a current transformation member having a curved current transformation plate or a flat current transformation plate installed opposite to the pipe opening of the inflow pipe; The inflow pipe is connected to a branch pipe installed in the upstream water pipe via a gate valve, and
The discharge pipe is connected to a branch pipe installed in the downstream water pipe via a gate valve, and the upstream branch pipe and downstream branch pipe are connected by a bypass pipe having a gate valve. water storage device.

The present invention will be explained below based on the embodiments shown in FIG. 1 and below.

1 to 4 show one embodiment thereof, in which:
Reference numeral 1 denotes a water tank, which is composed of a pipe body portion 11, an upstream end plate 12, and a downstream end plate 13.

The water tank 1 is made of steel, reinforced plastic (FRP), or the like.

14 is a mouth for installing a fire hydrant, and 15 is a manhole.

A relatively large-diameter through hole 12A is bored in the center of the upstream end plate 12, and a plurality of through holes 12A are formed in the downstream end plate 13 at the center and at predetermined intervals from the center. A relatively small diameter discharge port (through hole) 13A is bored.

Reference numeral 2 denotes an inflow pipe, which is installed branching from an upstream water pipe, which will be described later, and has its tip projecting into the water storage tank 1 through a through hole 12A provided in the upstream end plate 12. .

2a is a small hole bored at the tip.

The inflow pipe 2 is provided with a gate valve 21, a check valve 22, and a telescopic flexible joint 23 as appropriate, but any or all of these may be omitted.

Reference numeral 3 denotes a current transformation member attached to the tip of the inflow pipe 2, which is composed of a curved current transformation plate 31, a rib 32, and a flange 33.

The curved current transformation plate 31 is installed at the mouth of the inflow pipe with its concave surface facing (facing), and the ribs 32 fix the current transformation plate 31 to the tip of the inflow pipe 2, and there is a gap between the ribs. It has a gap through which water flows out.

Reference numeral 4 denotes a discharge pipe, one end of which is connected to a water pipe on the downstream side, which will be described later, and the other end divided into a plurality of drainage branch pipes 4A, each of which is provided on the downstream end plate 13 of the water tank 1. The discharge port (through hole) 13A is connected to the discharge port (through hole) 13A.

The discharge pipe 4 is appropriately provided with an air valve 41, a gate valve 42, and a telescopic flexible joint 43, but any or all of these may be omitted.

51 is an upstream water pipe, and 52 is a downstream water pipe. A branch pipe is attached to each water pipe, and a branch pipe 61 on the upstream side is connected to a gate valve 71 that is normally open. The inflow pipe 2 is connected.

Further, the discharge pipe 4 is connected to the downstream branch pipe 62 via a gate valve 72 that is normally open.

Reference numeral 53 denotes a bypass pipe that connects the upstream water pipe 51 and the downstream water pipe 52 via branch pipes 61 and 62, and a gate valve 73 that is normally closed is installed at a suitable location in the bypass pipe 53. Ru.

481 is a fire hydrant, 82 is an exhaust valve for removing air accumulated in the water tank 1 and the manhole 15, and 83 is a pump mounting port covered with a blind lid, which are permanently installed in the water tank.

84 is a pump, which is deployed in case of an emergency, which will be described later.

Therefore, the functions of the emergency water storage device of the present invention are as follows.

There is always an upstream water pipe 51 and a branch pipe 61 in the water storage tank 1.
, water is fed from the flow pipe 2 through the gate valve 71.

At this time, the inflow water discharged from the pipe opening of the inflow pipe 2 collides with the concave surface of the curved current changing plate 31, the flow is changed along the concave surface, and the water flow is stirred (turbulent flow) by passing between the ribs 32. ) and collides with the upstream head plate 12, making the flow even more turbulent.

This water flow then flows downstream within the water storage tank 1.

When this water flow reaches the downstream side in the water tank, the downstream end plate 13
Since the is provided with a large number of discharge ports 13A, the water flow is not concentrated at one point (for example, the center hole) but is divided and discharged.
It flows out to the discharge pipe 4 via the outlet pipe 4A.

Therefore, stagnation (dead water) does not occur along the downstream end plate 13 along the plate surface.

Due to this turbulent flow of inflow water and branched discharge, all dead water in the water storage tank (including not only water that remains in the tank, but also flowing water that stays in the tank for a long time).

) does not occur.

In this way, fresh clean water is constantly replenished and drained into the water storage tank 1.

Now, when the water pipes are cut off in the event of an earthquake or other emergency and drinking water is needed, the gate valves 71 and 72 are shut off and the pump 84 is installed above the water tank 1 to drain the water in the tank. It gets sucked up.

At this time, atmospheric air is sucked in through the exhaust valve 82 and no negative pressure is generated in the tank.

Further, when it becomes necessary to temporarily stop the water flow in the water storage tank 1, if the gate valves 71 and 72 are shut off and the gate valve 73 is opened, the water will flow through the tap water bypass pipe 53, so there will be no water cutoff.

The configuration of the present invention is not limited to the above embodiment.

Various design changes are possible without departing from the basic technical idea of the present invention.

In other words, components other than those described above can be omitted or modified as appropriate;
In addition to the first embodiment), the embodiments shown in FIGS. 5 and 6 can be adopted.

Components having the same functions as those in the first embodiment are given the same reference numerals.

In the one shown in FIGS. 5 and 6 (second embodiment), a planar current variable plate 31' is used, and an appropriate number of communication holes 31a' are bored in the planar current variable plate 31'. .

In this second embodiment, a portion of the water discharged from the inflow pipe 2 collides with the current changing plate to change its flow and reaches the upstream head plate 12, but a portion passes through the flow hole 31a'. This results in a difference in flow rate, which is expected to produce a stirring effect.

Since the emergency water storage device of the present invention has the above structure and functions, it has the following excellent effects.

■ Due to the combination of turbulent flow created by the current changing member and divided flow discharge from multiple outlets, no dead water is generated in the water storage tank.

In particular, the inflow water discharged from the inflow pipe by the curved current transformation plate and the flat current transformation plate of the current transformation member goes around to the upstream steel plate.
゛It is revolutionary because it completely eliminates the accumulation of water in this area.

■ When stopping the flow of water into the water tank 1. Water can flow through a bypass pipe, so there is no water outage.

[Brief explanation of the drawing]

The drawings show an embodiment of the emergency water storage device of the present invention, and FIG. 1 is an overall plan view thereof, FIG. 2 is a vertical side view, FIG. 3 is a view taken along the line E in FIG. 2, and FIG. 2 is a view taken along the Rolo line in FIG. 2, FIG. 5 is a longitudinal sectional view of another embodiment of the current transformation member, and FIG. 6 is a view taken along the C line in FIG. 1... Water tank, 11... Pipe body part, 12...
...Upstream end plate, 13...Downstream end plate, 2.
...Inflow pipe, 3...Current transformation member, 31...
...Curved current variable plate, 31' flat current variable plate, 4...
・Discharge pipe, 4A...Discharge branch pipe, 51...
・Upstream water pipe, 52...Downstream water pipe, 53
...Bypass'1.61,62...Branch pipe, 71,72.73...Gate valve.

Claims (1)

[Claims for Utility Model Registration] A water storage tank 1 that is composed of a pipe body part 11 and upstream and downstream end plates 12 and 13, and is installed with the pipe axis direction of the pipe body part 11 being horizontal; and the water storage tank 1; An inflow pipe 2 that penetrates and is attached to the center of the upstream head plate 12 of the tank 1; and a curved current transformation plate 3 that is installed facing the pipe opening of the inflow pipe 2.
1 or a flat current transformation plate 31', and a discharge pipe 4 to which a discharge branch pipe 4A communicating with a plurality of discharge ports bored in the downstream head plate 13 of the water storage tank 1 is connected. , The inflow pipe 2 is a branch pipe 6 installed in the upstream water pipe 51.
1 via a gate valve 71, and the discharge pipe 4 is connected to a branch pipe 62 installed in the downstream water pipe 52 via a gate valve 72, and the discharge pipe 4 is connected to the branch pipe 62 installed on the downstream side water pipe 52 via the gate valve 72, and the upstream branch pipe 61 and the downstream side An emergency water storage device characterized in that the branch pipe 62 is connected to the bypass pipe 53 having a gate valve 73.