JPS6212954Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is used for the purpose of running existing pipelines that transport gas, water, oil, etc., for inspection and repair inside the pipes, for example. , or a launcher used to apply fluid back pressure to an object when passing the object for the purpose of passing the object itself, and more specifically, a launcher that is connected to one end of a conduit in a sealed state. The present invention relates to a launcher for moving an object within a conduit, the main body of which is provided with a sealed connection means and a flow path for supplying pressurized fluid for moving the object placed inside the conduit.

[Conventional technology]

Conventionally, as shown in FIG.
It consists of a lid 17 connected to a joint 14a provided at the end of the conduit 14 with a bolt and nut 16, and an elastic seal ring 18 interposed between the joint 14a and the lid 17. A lid 17 was integrally formed on the main body 1 forming a flow path 1a for fluid supply.

[Problem that the invention attempts to solve]

However, the lid 17 and the elastic seal ring 18 can only be applied to certain joints and conduit diameters, and for this reason, when the type of conduit joint or conduit diameter changes, it is necessary to prepare multiple types of launchers.
This was not only economically disadvantageous, but also disadvantageous in terms of transportation and storage.

An object of the present invention is to provide a launcher with excellent versatility.

[Means to solve the problem]

A characteristic configuration of the present invention is that the airtight connecting means for tightly connecting a main body having a flow path for supplying pressurized fluid for moving an object placed inside the conduit to one end of the conduit is arranged on the inner surface of the conduit. A sealing member that is elastically fitted tightly around the entire circumference of the conduit, a plurality of fixing members that are brought into pressure contact with the inner peripheral surface of the conduit, and a plurality of fixing members that are fixed in the conduit in the radial direction and relative distance. The sealing member is removably connected to the main body, and its functions and effects are as follows.

[Effect]

In other words, the sealing member and the fixing member are placed in the conduit with the fixing members close to each other so as not to hinder insertion into the conduit, and the fixing member is moved away from each other using the operating device. The main body is moved and pressed against the inner surface of the conduit, and the main body is fixed to the conduit so that it does not move using the pressurized fluid for moving the object, and the sealing member that is in close contact with the inner surface of the conduit prevents leakage of the pressurized fluid for moving the object. The conduit is capped, the object placed in the conduit is moved using pressurized fluid supplied from the main flow path, and when the work is completed, the fixing members are brought close to each other by the operating device to seal. The component and fixing component are pulled out of the conduit.

Therefore, regardless of the type of joint of the conduit, the launcher can be used as is for various conduits as long as the diameter of the conduit is approximately constant. Furthermore, even if the diameter of the conduit changes to some extent, most of the launcher can be used as is by simply removing the sealing member from the main body and replacing it with a sealing member having a diameter that matches the diameter of the conduit.

[Effect of idea]

As a result, if the type or diameter of the joint of the target conduit changes, it is sufficient to prepare only a plurality of sealing members of different sizes to match the change in diameter, and prepare one or more types of main body. It is advantageous over the prior art in terms of economy, transportation, and storage.

〔Example〕

Next, an embodiment will be described with reference to FIGS. 1 to 4.

As shown in FIG. 1, a connecting part 3 for connecting to a pressure fluid supply device 2 such as a compressor, and a wire or rope are provided at one end side of a pipe 1 having a flow path 1a for pressurized fluid supply inside. A passage 6 is provided for introducing the cable 5 into the conduit from the outside, and the other end of the pipe 1 is provided with a passage 1 inside the conduit.
It is opened so that pressurized fluid for moving the object can be supplied from a.

A diameter expanding cylinder 7 whose outer diameter becomes larger toward the end is fitted onto the outer periphery of the open end of the pipe 1, and the cylinder 7 is connected to a nut 8 screwed onto the open end of the pipe 1. Therefore, the circular elastic seal member 9 fitted onto the pipe 1 is removably connected, and the seal member 9 having a diameter matching the inner diameter of the conduit is attached.
It is constructed so that it can be elastically and tightly fitted into the inner surface of the conduit over the entire circumference.

A pressing cylinder 10 is slidably fitted onto the pipe 1, and a handle nut 11 is screwed onto the pipe 1.
The pressing cylinder 10 is configured to be able to be pressed toward the diameter expanding cylinder 7 by screwing the nut 11 into the pipe 1, and is an annular fixing member divided into four in the circumferential direction as shown in FIG. 12 is externally fitted onto the diameter expanding cylinder 7, and the elastic ring 13 is fitted into the groove formed on the circumferential surface of the fixing member 12, and the tip of the pressing cylinder 10 is brought into contact with the end surface of the fixing member 12. It is arranged so that it can be done. That is, as the pressing cylinder 10 moves toward the diameter-expanding cylinder 7 by operating the nut 11, the fixing member 12 is moved radially and mutually within the conduit by the action of the diameter-expanding cylinder 7. It is configured such that it can be moved away from the pipe and fixed to the inner surface of the conduit under pressure,
Furthermore, in the fixed state to the inner surface of the pipe, the pressing action of the pressing cylinder 10 against the fixing member 12 is released by operating the nut 11, and the pipe 1
When pushed slightly into the conduit, the pressing action of the diameter expanding cylinder 7 on the fixing member 12 is released, and the elastic restoring force of the elastic ring 13 causes the fixing member 12 to move in the radial direction of the conduit. can move toward each other,
The structure is such that the fixing member 12 can be released from being fixed to the conduit.

The manner in which the launcher is used will be explained with reference to FIG. That is, as shown in FIG. 3A, the conduit 1
A sealing member 9 whose dimensions are set to ensure sufficient sealing according to the diameter of pipe 4, and a fixing member 12 whose dimensions are set to enable sufficient fixation are attached, and connected to cable 5 passed through pipe 1. After inserting the object 15 into the conduit 14, the sealing member 9 and the fixing member 12 in a reduced diameter state are inserted into the conduit 14. Then, by operating the nut with handle 11, the fixing member 12 is slid to the large diameter side of the diameter expanding cylinder 7 by the pressing cylinder 10, and the inner circumference of the conduit 14 is moved as shown in FIG. The diameter is expanded until the surface is pressed with appropriate force, and the launcher is connected to one end of the conduit 14 in a sealed state, as shown in FIG. 3B. In this state, the pressure fluid supply device 2
When the fluid back pressure is applied to the object 15 in the conduit 14 and the cable 5 is let out, the object 15 moves
The object 15 is moved to the other end opening of the conduit 14 to complete the wiring work. Then, the object 15 is removed from the cable 5, the handle nut 11 is loosened to release the pressing action on the fixing member 12 by the pressing cylinder 10, and the pipe 1 is pushed into the conduit 14 a little to release the fixing action. After that, move the launcher to conduit 1
4, and on the side where the object 15 is removed or the launcher is removed, connect an appropriate device for moving inside the pipe 14, such as an inspection device or a cleaning device, and pull the cable 5 to pass the device through the pipe 14. .

[Another example]

Next, another embodiment will be described.

The launcher can also be used for the purpose of passing the object itself, for example, when attaching an irregularly shaped object such as a lining cylinder introduced into the conduit 14 or a liquid lining material to the conduit 15. It is convenient to provide an opening/closing lid for the cable introduction passage 6;
may be omitted. Furthermore, as shown in FIG. 5, when not receiving fluid back pressure, the diameter is in a contracted state,
When using an object 15 configured to expand in diameter and come into contact with the inner wall surface of the conduit 14 when subjected to fluid back pressure, it is convenient to configure the pipe 1 to accommodate the object 15 in a reduced diameter state. In short, the launcher has a conduit 14 with an object 15 placed inside it.
Any device that can be attached to move the body using fluid back pressure may be used.

Any structure may be used in place of the pipe 1, as long as it has a flow path 1a for supplying pressurized fluid from the outside into the conduit 14, and these will be collectively referred to as the main body 1.

The mounting structure of the seal member 9 can be changed in various ways, and it is sufficient that the seal member 9 is removably connected to the main body 1 so that the seal member 9 can be replaced with a seal member 9 having a different diameter.

The number of divisions of the fixing member 12 can be changed appropriately, and a plurality of fixing members 12 may be provided.

The means for moving the plurality of fixing members 12 in the radial direction and in the relative distance direction within the conduit 14 can be changed as appropriate, and they can be moved by the operating devices 7, 10, 11.
Collectively called.

[Brief explanation of the drawing]

1 to 4 show embodiments of the present invention,
Figure 1 is a partially cutaway side view, Figure 2 is a - of Figure 1.
3A and 3B are longitudinal sectional views showing the state of use, and FIG. 4 is a sectional view taken along the - line in FIG. 3B. FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention. FIG. 6 is a longitudinal sectional view of a conventional example. 1...Main body, 1a...Flow path, 5...Cable, 6...
Passage, 7, 10, 11... Operating device, 9... Seal member, 12... Fixing member, 14... Conduit, 1
5...Object.

Claims (1)

[Claims for Utility Model Registration] A hermetically sealed connection means that is connected to one end of the conduit 14 in a sealed state, and an object 15 placed inside the conduit 14
Channel 1 for supplying pressurized fluid for moving
a is a launcher for moving an object within a conduit, which is provided in the main body 1, and the hermetic connection means is connected to the conduit 14.
a sealing member 9 that is elastically and tightly fitted over the entire circumference of the inner surface of the conduit 14; a plurality of fixing members 12 that are brought into pressure contact with the inner circumferential surface of the conduit 14; an operating device 7 for moving in the direction and relative distance;
10 and 11, and the sealing member 9 is removably connected to the main body 1. The launcher according to claim 1, wherein the main body 1 is provided with a passage 6 through which a cable 5 connected to an object 15 in a conduit 14 is introduced from the outside.