JP2918402B2 - Blocking treatment method for unorganized supply pipe and its device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called unmaintained supply pipe, which is a supply pipe drawn into a residential area from a conduit under a road as a gas pipe, and a part of the supply pipe is left buried as it is discontinued. More specifically, the present invention relates to a closing method using a stopper and resin filling.

[0002]

2. Description of the Related Art As for gas piping, supply pipes are drawn from a conduit under a road to a predetermined place in each residential land.
When a building in a residential land is replaced or diverted to another use, its supply pipe may be stopped. The supply pipe that has been discontinued is cut to a length that does not interfere with the residential land, and the terminal is closed to prevent gas leakage.Such a supply pipe is called an unorganized supply pipe. ing. By the way, the unconsolidated supply pipe is connected to the pipe and is in the state of a live pipe.However, because it is not used, it has been buried and left in the soil for many years. However, there is a possibility that gas leakage may occur due to delay in noticing.

Therefore, as a countermeasure against gas leakage of the unorganized supply pipe, a road is generally excavated to expose a service tee where the unorganized supply pipe branches. Then, the unorganized supply pipe and the service tee were removed, a plug was screwed into the mounting hole of the service tee on the conduit, and the plug was closed to completely remove the unorganized supply pipe. Although this method completely eliminates the risk of gas leakage, it has the following disadvantages. That is, since the road is excavated in a wide area, a procedure for permitting use of the road is required, and during excavation, the nearby residents are often troublesome in terms of traffic, noise, and the like. In addition, civil and pavement work requires a great deal of time and money. For this reason, there is a demand for a construction method in which the untied supply pipe is not excavated and the service tee side is closed as much as possible to prevent gas leakage.

[0004] Conventionally, as a prior art relating to the blockage processing of the unexcavated unorganized supply pipe, for example, Japanese Utility Model Laid-Open No. 3-38493.
In the publication, an elastically deformable solid spherical closure is connected to a remote control wire device via two supports, and the spherical closure is inserted deep into the piping by remote control operation,
It also shows that the closure is deformed flat and closed.

[0005]

In the above-mentioned prior art, since the upstream side of the pipe to be removed is temporarily closed by a spherical closing device, the root of the unsorted supply pipe has to be kept for many years. Cannot completely prevent gas leakage.

The present invention has been made in view of this point, and a main object of the present invention is to completely prevent a gas leak by completely closing an unsorted supply pipe at a service tee in a non-drilling state. In addition, the present invention provides a clogging treatment method capable of greatly simplifying the construction of unorganized supply pipes. Another object of the present invention is to provide a blockage processing device capable of reliably blocking a connection portion of a service tee with a conduit by remote control.

[0007]

In order to achieve the above-mentioned object, the blockage treatment method of the present invention is drawn into a residential area from a conduit buried under a road through a service tee or the like and left buried in an unused state. With respect to the unorganized supply pipe, a wire with a spring-shaped stopper is pushed from the pipe end opening of the unorganized supply pipe to the service tee side of the unorganized supply pipe, and the wire and the stopper are moved. The service tee is taken in and out of the conduit, and the stopper is tightly fitted to the inlet side of the service tee and closed, and then the resin is filled by the resin injection means in an overflow state inside the service tee closed by the stopper. Blocking processing is performed. In addition, the clogging treatment device of the present invention is characterized in that a wire tool which is pushed into the unorganized supply pipe and moves while being bent, and which is attached to the tip of the wire tool and is tightly fitted to the entrance side of the service tee. A stopper that closes and closes, a resin injection hose that is mounted with an injection port opened at a predetermined position of the communication tool, and resin injection means that injects resin into the service tee through the resin injection hose. is there.

[0008]

According to the above-mentioned closing method, a wire with a spring-shaped stopper is pushed into an unarranged supply pipe and is moved so that the stopper can be remotely operated so that the stopper can be moved into and out of the conduit from a service tee. As a result, the stopper is fitted to the entrance side of the service tee in a one-touch manner and securely closed, and in this state the resin is filled inside the service tee and attached to the conduit at the base of the unorganized supply pipe Is completely blocked at the point of the service tee. This ensures that the unorganized supply pipe is completely closed over the entire length, and therefore, even if the unorganized supply pipe is left buried at an arbitrary length, there is no risk of gas leakage. In addition, since the blockage is performed by the remote control and the non-digging process is performed, it becomes unnecessary to dig a road or the like. Also, according to the closing processing device,
A spring stopper and a resin injection hose which opens an injection port at a predetermined position are attached to the wire, so that these are pushed and moved together into the unorganized supply pipe. And when the stopper is fitted and closed at the entrance side of Service Qi,
This is confirmed by the load on the wire, and at this time, the injection port of the resin injection hose is opened inside the service tee, and the resin is reliably filled into the service tee by the resin injection means.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the entire configuration of a blockage processing apparatus suitable for the blockage processing method for an unordered supply pipe of the present invention will be described. First, reference numeral 1 denotes a gas conduit buried under a road a at a predetermined depth, and a service tee 10 is attached to a branch portion of the conduit 1. The service pipe 10 is connected to the service pipe 10, the elbow 3, the extension pipe 4, and the standing pipe 5 to the ground, and the gas supply pipe 6 is buried in the residential land b of the demand destination by being buried in the soil c. . Therefore, the supply pipe 6 becomes the unsorted supply pipe 6 due to the discontinuation of use.
The closing processing device 20 is attached to the apparatus.

The closing device 20 includes a wire 21 and a wire 2 which are inserted into the unarranged supply pipe 6 which is bent at a small diameter.
One-touch type stopper 25 attached to the tip of 1
A resin injection hose 30 is provided integrally or separately on the wire 21. Further, a sealed work bag 31 attached to the end of the unorganized supply pipe 6 to prevent gas from being scattered in the air during a closing operation, a gas detector 32 for checking gas leakage after closing by the stopper 25, FIG. As shown in FIG. 2, an air gun 34 is provided which is provided with a resin cartridge tank 33 and connected to the resin injection hose 30.

In FIG. 2, a wire 21 and a stopper 2
5. The resin injection hose 30 and the like will be specifically described.
The wire passing tool 21 has a flexible wire 22 having a large spring force and bendable formed by spirally winding a wire. A coil spring 23 having a small spring force is connected to the tip of the wire 22 so as to be able to swing. As a result, the inside of the unarranged supply pipe 6 which is bent with a small diameter can be easily inserted.
The resin injection hose 30 is formed integrally with the coating 30 a fitted to the flexible wire 22 of the wire 21, and moves together with the wire 21.
Then, the inlet 30b of the hose 30 is set so as to open behind by a predetermined length from the end of the wire 21.

The stopper 25 has a seal member 27 made of a relatively large disc-shaped sponge and a steel ball 28 attached to a metal fitting 26 at the tip of the coil spring 23 in a spring shape. It is configured so as to be tightly fitted inside the tube by being wrapped in a tube. Further, in order to reduce the resistance when the sealing material 27 is bent and moved inside the pipe, the steel ball 2 of the sealing material 27 is used.
A sliding material 29 such as vinyl which is easy to slip is attached to the 8 side. Here, the service tee 10 is formed such that an inlet port 12 and an outlet port 13 are formed in the main body 11 so as to be orthogonal to each other, and the inlet port 12 is screwed into the mounting hole 1a of the conduit 1, and the outlet port 13 is connected to the end of the drawing pipe 2. Can be attached by screwing. In this case, since the diameters of the inlet pipe 2 and the inlet port 12 are the same, the diameter of the steel ball 28 is formed slightly smaller than the diameter, and the sealing material 27 has a diameter approximately twice as large as that of the steel ball 28. It is possible to wrap around half a circumference.

The resin d injected by the resin injection hose 30 is, for example, an epoxy resin which is shaped in about three hours after injection and solidified in about one day. The amount of the resin d is such that the resin d overflows and fills the inside of the service tee 10 when the resin d is injected through the resin injection hose 30 by the air gun 34.

Next, the operation of the closing method according to this embodiment will be described.
This will be described with reference to the drawings after FIG. First, as shown in FIG. 3, the wire 21 and the resin injection hose 30 are wound in the closed work bag 31, and the unfilled supply pipe 6 is buried.
If there is a standing pipe 5 at the end of the pipe, the end of the standing pipe 5 is cut and opened. Then, the stopper 25 at the tip of the wire 21 is immediately inserted into the open end of the standing pipe 5, and the closed work bag 31 is attached so that the injection port 30 b of the resin injection hose 30 is aligned with the predetermined tip of the wire 21. . Thereafter, in a state where the gas is prevented from being scattered into the air by the sealed work bag 31, the operator puts his hand into the glove 31a of the bag 31 and operates the glove 31a, thereby connecting the wire 21 and the resin injection hose 30 together. Extrude.

When the wire 21 is pushed in, the stopper 25 and the resin injection hose 30 move forward inside the unorganized supply pipe 6 together. At this time, in the stopper 25, the sealing material 27 having a diameter larger than the pipe diameter is substantially wedge-shaped and is backwardly opposed to the steel ball 28 in a state where the sealing material 27 is covered with the sliding material 29. And move forward smoothly. In the bent portion of the elbow 3 or the like, the wire 21
Is smoothly bent and advanced by the swinging operation of the coil spring 23, and reaches the final service team 10. Therefore, in the service Q10, as shown in FIG.
3 moves in the reverse direction and enters the inlet port 12, and at this time, the weight of the steel ball 28 of the stopper 25 at the inlet port 12 is applied downward, so that the steel ball 28 is guided in the direction of the conduit 1.

As shown in FIG. 4, when the stopper 25 penetrates into the conduit 1 from the inlet port 12 of the service tee 10, the sealing material 27 or the like that has collapsed opens in a disk shape, and the pushing force of the wire 21 is rapidly increased. Can be confirmed by the operator. Therefore, the connecting tool 21
, The sealing material 27 of the stopper 25 hits the edge of the entrance port 12 of the service tee 10, and the steel ball 28
, And the diameter of the steel ball 28 is increased, and in this state, the sealing member 27 and the steel ball 28 fit into the inlet port 12.
Then, as shown in FIG. 5, a sponge-like sealing material 27 provided with a steel ball 28 is tightly fitted to the inlet port 12 to be completely sealed. At this time, a large load is applied to remove the wire 21. Thus, the operator can confirm this. In this way, the connection between the inlet port 12 and the conduit 1 is completely closed by the stopper 25 by one-touch operation by remote control by taking the wire 21 in and out, so that the gas e of the conduit 1 does not enter the unordered supply pipe 6.

After the entrance port 12 of the service tee 10 has been closed, the connecting member 21 is fixed to the end of the unarranged supply pipe 6, and the unnecessary closed work bag 31 is removed. Then, the presence or absence of gas leakage is inspected by the gas detector 32 to confirm that the stopper 25 is closed. Thereafter, in order to permanently secure this closed state, a predetermined amount of epoxy resin d is put into the cartridge tank 33 of the air gun 34,
The air gun 34 is connected to the resin injection hose 30 for operation. Then, the epoxy resin d is sent through the hose 30 by the high-pressure air. At this time, since the injection port 30b is located immediately before the inlet port 12 of the service tee 10, the epoxy resin d is directly injected into the inlet port 12 from the injection port 30b. Is done. As shown in FIG. 6, the epoxy resin d overflows over the entirety of the inlet port 12 of the service tee 10 closed by the stopper 25 and a part of the inlet pipe 2 of the outlet port 13 to be properly filled. Thus, the work is once ended.

The injected epoxy resin d is shaped in about three hours, and solidifies after one day. As a result, the unconsolidated supply pipe 6 is connected to the service tee 10 at the root and the service pipe 2.
Is completely closed by the stopper 25 and the resin d. Thereafter, the unorganized supply pipe 6, the wire 21 inserted therein, and the resin injection hose 3
0 is cut off at an appropriate length in the residential land and does not get in the way, and is buried and left as it is. In this case, since the unsorted supply pipe 6 is clogged by the root service tee 10, even if any part of the unsorted supply pipe 6 is corroded for many years, there is no possibility of gas leakage. Become.

Although the embodiment of the present invention has been described above, the wire and the hose may be cut in the middle if the resin is hardened after being solidified, and a part of the hose may be collected. The resin injection hose may be formed inside the communication tool.

[0020]

As described above, according to the present invention,
This method eliminates the need for excavation of roads because it is a method of closing the untied supply pipe at the root of the service team without excavation. For this reason, the period and cost of civil engineering and pavement construction are significantly reduced, labor saving of construction execution, environmental protection of traffic, noise, etc., and shortening of execution time are achieved. Uncleaned supply pipes are clogged by the service tee at the root, so they are completely blocked over the entire length of the uncleaned supply pipes, and even if they are buried and left in the soil at any length, gas leakage may occur. There is no fear and the reliability is high. Since only the service tee at the base of the unconsolidated supply pipe is clogged, the amount of resin used is minimized and the operation is simplified.

Since the stopper of the closing device is configured to close the entrance side of the service tee tightly by operating the communication tool into and out of the conduit from the service tee, the stopper can be reliably closed by remote control. Good nature. If the stopper is fitted on the entrance side of the service tee and is securely closed, a large load is applied to the wire passing tool, which can be confirmed accurately. The hose to inject the resin is moved together with the wire, and when the stopper closes the service tee, the injection port opens inside, so that the resin can be securely and easily filled into the service tee by remote control. Can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an embodiment of a device for closing a raw supply pipe according to the present invention.

FIG. 2 is a view showing in detail a wire, a stopper, a resin injection hose, and the like.

FIG. 3 is a cross-sectional view showing a pushed-in state of a wire tool or the like in the work of the unsorted supply pipe closing processing method according to the present invention.

FIG. 4 is a cross-sectional view showing a state in which a stopper has penetrated a conduit in the same operation.

FIG. 5 is a cross-sectional view showing a state where the work is closed by a stopper and a resin is injected in the work.

FIG. 6 is a sectional view showing the completion of resin injection in the same operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conduit 6 Unconsolidated supply pipe 10 Service tee 12 Inlet port 21 Communication tool 25 Stopper 34 Air gun d Resin

Continuation of the front page (56) References JP-A-4-185994 (JP, A) JP-A-3-79899 (JP, A) JP-A-4-18966 (JP, A) JP-A-3-38493 (JP) , U) Table 3-502961 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16L 55/00-55/24

Claims (3)

(57) [Claims] 1. An unsorted supply pipe which is drawn into a residential area from a conduit buried under a road through a service tee or the like and is buried and left unused in an unused state from a pipe end opening of the unsorted supply pipe. Push the wire with the spring stopper into the service tee side of the unaligned supply pipe, move the wire and the stopper out of the service tee into and out of the conduit, and fit the stopper into the service tee inlet side tightly. A method for clogging an unorganized supply pipe, wherein the clogging is performed by filling and closing the resin by means of resin injection means in a state of overflowing inside the service tee closed by the stopper. 2. A wire passing tool which is pushed into an unarranged supply pipe and moves while bending, and a stopper which is attached to a tip of the wire feeding tool and tightly fits and closes an entrance side of a service tee. A resin injection hose that is mounted at a predetermined position of the wire with an injection opening, and resin injection means for injecting resin into the service tee via the resin injection hose. A blockage processing device for the rearranging supply pipe. 3. The stopper is provided with a sealing member made of a relatively large disc-shaped sponge, a steel ball, and a sliding member at the end of the wire passing tool, and is drawn back into the service tee after penetrating from the service tee into the conduit. 3. The apparatus according to claim 2, wherein the sealing material is configured to be fitted and closed to the entrance port of the service tee with the steel ball wrapped around the steel ball.