JPH0619918Y2 - In-pipe water suction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an in-pipe water suction device that sucks so-called water that has entered and accumulated in a gas conduit and removes it outside the pipe.

[Prior art and its problems] Groundwater intrudes into the gas conduit buried in the ground through loosening of joints, corrosion holes, etc. If it obstructs the flow, or if it gets worse, it will interrupt the flow of gas.

Therefore, it is necessary to dig up the cause and repair it as soon as possible, and to drain the water in the pipe.

Conventionally, as a device for draining the water in the pipe, as shown in FIGS. 5 and 6, a water sensor 2 for detecting water is attached to the tip of the suction hose 1 and the water is radially provided in the vicinity of the water sensor 2. It is well known that a perforated suction hole 3 is provided. However, in this known example, since the suction holes 3 are radially provided, when the water level becomes low as shown in FIG. At the water level, there is a problem that water cannot be sufficiently sucked.

In Japanese Patent Laid-Open No. 61-128000, a tip guide 2 is attached to the tip of a flexible wire 1, a water detector 5 is inserted into the tip guide 2, and a flexible conduit 4 is passed through the wire 1. There is shown a water pumping device for a gas main in which a water suction port 41 is formed at the tip of the conduit 4 and the water suction port 41 is located in the tip guide 2.

However, in the case of this publicly known example, the water intake port 41 has the tip guide 2
Since the tip guide 2 is located inside, the water inlet 41 does not come into close contact with the inner surface of the pipe, and the low water level corresponding to the thickness of the tip guide 2 cannot at least suck water. There is. Further, in the case of this known example, the water detector 5 is located at a part of the inner circumference in the tip guide 2, so anyway when this tip guide 2 always faces the water detector 5 side. , This guarantee is not available at all, so water may not be detected at low water levels. or,
In this publicly known example, one signal line 51 from the water detector 5 passes through the conduit 4 as it is, so the communication line 51
If the wires are twisted or broken, the parts cannot be repaired until they are separated.

An object of the present invention is to propose an in-pipe water suction device which is capable of surely sensing and sucking even a minute water level and being devised so as to be easily repaired when a communication line is broken.

[Means for Solving Problems] The present invention proposes a water supply suction device having the following configuration as means for achieving the above object.

In a pipe insertion water suction device in which a water sensor 2 is attached to the tip and a vacuum pump 6 that is automatically driven when the water sensor 2 detects water is attached to the rear end of the suction hose 1, the tip side of the suction hose 1 A suction spring coil 8 wound in close contact with is connected to the water coil 2, and the water sensor 2 is attached to the tip of the spring coil 8 and a signal line 10 connecting the water sensor 2 and the vacuum pump 6 is connected by a connector 9 in the spring coil 8. An in-pipe water suction device characterized by the above.

[Operation] The above device is inserted into the pipe from a part of the gas pipe by the suction hose, and when the water sensor detects the water supply, a signal is sent to the vacuum pump, the vacuum pump is driven, and the minute interval of the spring coil is detected. Aspirate the water to remove it outside the tube.

The spring coil responds flexibly in the pipe, and there is a gap especially on the curved outside, which is the suction port (slit).
Becomes and sucks water. If the signal line is broken, a new one can be reconnected using the connector.

[Embodiment] FIG. 1 is an explanatory view of a state in which a suction operation according to the present invention is being performed to suck water, and FIG. 2 shows a main part of the apparatus according to the present invention. In FIG. 2, the suction hose 1
A suction spring coil 8 wound tightly on the tip of the spring coil and a water sensor 2 for detecting water are attached to the tip of the spring coil 8. The spring coil 8 and the suction hose 1 communicate with each other, and the water sensor 2 and the vacuum pump 6 are connected via a signal line 10. When the water sensor 2 detects water in the above embodiment, a signal is sent to the vacuum pump 6 to drive the vacuum pump 6, and the inside of the spring coil 8 is decompressed via the suction hose 1. As a result, for example, when the spring coil 8 is immersed in the water 7 in the state shown in FIG. 3 and the spring coil 8 bends,
As shown in FIG. 4, a gap a is formed outside the spring coil 8.
Occurs, and since the inside remains in close contact, water is sucked into the spring coil 8 through the gap a as shown by the arrow. 4 in the figure
Is a gas conduit, 5 is a working port, 9 is a connector that connects the water sensor 2 and the signal line 10 in the spring coil 8, and 11 is a drainage container.

[Advantages of the Invention] As described above, the present invention has the suction spring coil attached to the tip of the suction hose and directly sucks water through the spring coil. As a result, the following effects are achieved.

a. Since the spring coil has flexibility, it bends along the lower portion of the pipe, and water in the pipe can be directly sucked through the gap between the coils. As a result, the parts without gaps are in close contact, and even if the water level becomes low, there is no concern that the gas will be sucked and the suction force will be reduced. You can

b. The spring coil also has a function as a strainer, and if dust or sand is difficult to enter and the spring coil is clogged, it can be easily clogged by bending or extending this spring coil in the free direction. Can be resolved.

c. Since the spring coil has flexibility in the free direction, it can be easily inserted even if the pipe has many bends or a small diameter.

d. Since the coil spring can use a commercially available one, the manufacturing cost is low.

e. Since the water sensor is exposed at the tip of the coil spring, water can be directly sensed even at a low water level.

f. Since the water sensor is connected to the communication line in the spring coil by using the connector, it is possible to easily replace the water sensor with a new one when the wire is disconnected.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a working example of a feed water suction device, FIG. 2 is an explanatory view showing a main part of the suction device according to the present invention, third, fourth
FIG. 5 is an explanatory view of the action of the suction device according to the present invention, FIG. 5 is a side view of a suction port portion and a sensor portion of a conventional suction device, and FIG.
FIG. 7 is an explanatory diagram of a suction port portion and a sensor portion of a conventional suction device, and FIG. 7 is an explanatory diagram of the operation of the conventional suction device. 1 ... Suction hose 2 ... Water sensor 3 ... Suction hole 4 ... Gas conduit 5 ... Work port 6 ... Vacuum pump 7 ... Water supply 8 ... Spring coil 9 ... Connector 10 ... Signal line 11 ... Drainage container

Claims (1)

[Scope of utility model registration request] 1. A pipe-inserted water suction device comprising a water sensor 2 attached to the tip and a vacuum pump 6 automatically driven when the water sensor 2 senses water attached to the rear end of the suction hose 1. A suction spring coil 8 tightly wound is connected to the tip of the hose 1, the water sensor 2 is attached to the tip of the spring coil 8, and a signal line 10 connecting the water sensor 2 and the vacuum pump 6 is provided in the spring coil 8. An in-pipe water suction device characterized by being connected by a connector 9.