JPH0124472Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for discharging fluid from an underground pipe that conducts a fluid such as gas or a pipe that is buried or hidden within a building wall.

FIG. 1 is a sectional view showing one embodiment of the present invention and for explaining the prior art. Buried in the ground 51 are pipes 52 for transporting fluids, such as gaseous fuels. This pipe 52 includes a branch pipe 53 for branching gas fuel and supplying it to each household.
is connected. The end 54 of the tube 52 is connected to the cap 5
5. For example, when converting gas fuel from one with a low calorific value to one with a large calorific value, most of the gas with a low calorific value in the pipe 52 can be extracted from the existing branch pipe 53; In the section of the so-called caecal tube over a length l at the end 54 of the tube 52,
The gas remains and cannot be discharged to the outside over this length l.

Conventionally, therefore, a vertical hole is drilled as indicated by reference numeral 56, and the cap 55 attached to the end 54 of the pipe 52 is removed to discharge the gas over a length l to the outside. Such prior art techniques obviously require a great deal of manpower and time.

An object of the present invention is to provide a device that can discharge fluid inside a pipe to the outside with a simple operation.

In the present invention, a guiding member having a rectangular front end shape is connected to the end of a main wire having a relatively large elastic force through an auxiliary wire, and the auxiliary wire is bent by the weight of the guiding member. A flexible tube is inserted into the main wire, and the flexible tube is connected to a fluid suction means. It is a device.

The function of this invention will be described. According to the invention, the main wire has a relatively large elastic force, so that the main wire can be pushed into the pipe. A guide member is connected to the end of the main wire via an auxiliary wire, and the auxiliary wire can be bent by the weight of the guide member. Therefore, as shown in FIG. 5, which will be described later, when the auxiliary wire is brought from the lead-in pipe 7 to the chi 6, it hangs down and bends due to the weight of the guiding member. This allows the guide member to be smoothly pushed and guided from the tee into the tube connected below the tee.

The auxiliary wire has a smaller elastic force than the main wire. Therefore, by pushing the main wire into the tube while rotating the main wire about its axis, the guiding member accumulates stress against twisting within the tube, rotates and vibrates, and bounces. This allows the guide member to enter the pipe while hanging over the level difference existing within the pipe.

Furthermore, according to the present invention, a flexible tube is inserted into the main wire, and this flexible tube is connected to the fluid suction means. The cecal tube 54 shown in FIG.
In this state, the fluid present in the cecal canal can be aspirated.

Since the front end of the guiding member has a rectangular shape, it is easy to get stuck on a step inside the pipe. When the corner of this guide member gets caught on a step etc.,
By storing elastic force in the auxiliary wire and the main wire, the guiding member can be made to bounce within the pipe. In this way, the guiding member can be allowed to enter the pipe while overcoming the step.

Note that in FIG. 1, which will be described later, when the ejector 20 is routed from the branch pipe 53, the guiding member 3 may proceed to the side opposite to the cecal tube 54 (to the left in FIG. 1); In such a case, the main wire may be pulled back into the branch pipe 53 and the ejection device 20 may be repeatedly advanced and retreated until it enters the cecal tube 54 side of the tube 52 again.

FIG. 2 is a side view of a discharge device 20 according to an embodiment of the present invention. The main wire 1 has a relatively large elastic force, is made of piano wire, etc., and is configured by winding the piano wire in a spiral shape, and in its natural state, the main wire 1 has a relatively large elastic force.
It may have a length of m or more. The end of the auxiliary wire 2 is fixed to the end of the main wire 1. A guiding member 3 is fixed to the other end of the auxiliary wire 2 . The auxiliary wire rod 2 can be bent by the weight of the guiding member 3 and has a smaller elastic force than the main wire rod 1. The auxiliary wire 2 is also made of piano wire or the like, and is wound spirally. The length of this auxiliary wire 2 may be, for example, about 10 cm.

In the tube discharge device 20, a flexible tube 6 is disposed inside the main wire 1.
1 is inserted. This flexible tube 61 does not have elasticity, or alternatively, the main wire 1 and the auxiliary wire 2
The end portion 62 of the flexible tube 61, which has elasticity sufficiently smaller than the elasticity of the flexible tube 61, extends to the vicinity of the guiding member 3, which is the distal end portion of the ejecting device 20. This tip 62
may be inserted into the auxiliary wire 2.

FIG. 3 is a perspective view of the vicinity of the guide member 3. The guide member 3 has a square surface 4 when viewed from the free end side (left side in FIG. 3), that is, from the front, and is partially formed into a prismatic shape. The proximal end 21 of the guide member 3 is tapered and is fixed to the auxiliary member 2 as described above. This guide member 3 is made of a material such as steel. By applying a rotational force to the main wire 1, torsional stress is accumulated in the pipe, and when the load falls below a certain level, it can rotate and vibrate due to reaction, and can withstand reuse.

Referring to FIG. 4, a chi 6 is connected to the upper part of the underground pipe 5. An above-ground standpipe 8 is connected to this chi 6 from a service pipe 7, and gas is supplied to a house 9. These lead pipes 7 and stand pipes 8 include
A pipe joint 10, an elbow 11, a valve 12, etc. are interposed. According to the discharge device 20 according to the present invention, the guiding member 3 is connected from these standpipes 8 to the lead-in pipes 7.
It is possible to enter the pipe 5 through the steps.

The state in which the discharge device 20 enters the chi 6 from the lead-in pipe 7 is shown in FIG. The auxiliary wire 2 is
The guiding member 3 is deflected by the force of gravity, so that the guiding member 3 is easily allowed to advance from the chi 6 into the tube 5. When the auxiliary wire 2 hangs down due to the gravity of the guide member 3, by pushing the main wire 1 while rotating the main wire 1 around its axis, the guide member 3 rotates and vibrates. tube 5
can enter inside.

Further, as shown in FIG. 6, the end of the tube 14 is closed with a plug 15.
Even when a branched pipe 16 is connected near the pipe 5, the discharge device 20 according to the present invention can be introduced from the pipe 14 into the pipe 16 as shown by the arrow 17, and vice versa. From 16 the tube 14 can be entered as indicated by arrow 18.

The free end surface 4 of the guiding member 3 is square, and therefore, the corner portion 4a of the free end surface 4 is likely to get caught in a step at an elbow, a tee, a pipe joint, etc. When this corner portion 4a hits a step inside the pipe, it jumps due to the elastic force of the auxiliary wire 2 and the main wire 1. This allows the guide member 3 to enter the pipe while hanging over the step.

According to experiments by the inventor of the present invention, when wires were passed through various gas pipes using the discharge device 20 of the illustrated embodiment, the wires could be threaded with a probability of approximately 92 to 93%, and the success rate was It was confirmed that the amount of time required to run the line was extremely high, and the time required to run the line was relatively short.

The discharge device following the main line can be routed not only to underground gas pipes, but also to pipes installed in other building walls, in other hidden parts, or can also be exposed pipes. .

As another embodiment of the present invention, the main wire 1 may be constituted by a coil spring having an inner and outer double structure wound in opposite directions.

Referring again to FIG. 1, the operation of discharging the gas remaining in the cecal tube 54 to the outside using the tube fluid discharge device 20 following the main wire will be described. The evacuation device 20 is passed through the branch pipe 53, and the guide member 3, which is the distal end thereof, enters the cecal tube 54. Therefore, a suction means 63 such as a pump is connected to the flexible tube 61 on the ground. In this way, it becomes possible to aspirate and discharge the gas convecting in the cecal tube 54 to the outside. Therefore, in the present invention, there is no need to excavate the vertical hole 56 as in the conventional case.

As described above, according to the present invention, the fluid inside the pipe can be discharged to the outside with a simple operation. In particular, with the present invention, it is possible to release the hook in the pipe and smoothly enter the discharge device into the pipe by the spring force of the main wire and the auxiliary wire, and by the reaction of the spring force of the guiding member. It is. The auxiliary wire can be bent by the weight of the guiding member, and therefore can easily enter the pipe.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the working state of an embodiment of the present invention and for explaining the prior art, Fig. 2 is a sectional view of an embodiment of the invention, and Fig. 3 is a perspective view of the vicinity of the guide member 3. Figure 4 is a piping diagram for explaining the wiring work, Figure 5 is a sectional view showing the wiring state near the chi 6, and Figure 6 is for explaining the wiring operation to the pipes 14 and 16. FIG. DESCRIPTION OF SYMBOLS 1... Main wire rod, 2... Auxiliary wire rod, 3... Guide member, 4... Free end surface, 4a... Corner part, 20... Discharge device, 61... Flexible tube, 63... Suction means.

Claims (1)

[Scope of utility model registration request] At the end of the main wire, which has a relatively large elastic force,
A guide member having a rectangular front end shape is connected through an auxiliary wire, and the auxiliary wire can be bent by the weight of the guide member and has a smaller elastic force than the main wire. 1. A device for discharging fluid within a tube, characterized in that a flexible tube is inserted into a wire, and the flexible tube is connected to a fluid suction means.