JP2571512Y2 - Closing jig for both pipe connection and pipe end - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a means for closing a pipe end, and more particularly, to perform a predetermined processing while connecting another pipe to an end of the pipe, and then maintain the processing state. The present invention relates to a means for closing a pipe including an end of the pipe while temporarily disconnecting the other pipe while closing the pipe, and then closing the pipe at the end.

[0002]

2. Description of the Related Art The end of the pipe in such means is used, for example, when a new pipe used as a gas supply pipe is piped or when a part of an existing gas supply pipe is replaced with a new pipe. And a joint outlet part of a branch joint for air purge interposed in a part of the new pipe. And when the new pipe in which the branch joint is interposed is given as a conventional example,
The another pipe corresponds to a diffusion pipe connected to a joint outlet of the branch joint so that gas is upwardly diffused at a part of the branch joint when air purging a pipeline including the new pipe is performed; The predetermined processing corresponds to air purging of the pipeline. Then, after performing the air purge, the pipe including the joint outlet of the branch joint is temporarily closed to maintain the purged state, the radiation pipe is removed, and the joint outlet of the branch joint is further closed. In such a case, a dedicated means for the temporary occlusion has not been particularly developed. Therefore,
For the temporary closing, a means for temporarily closing the joint outlet of the branch joint using a squeezing device or the like has to be adopted.

[0003]

As described above, means for temporarily closing the joint outlet portion of the branch joint using a squeeze device or the like has to be employed for the temporary closing. When such a squeeze device or the like is used, there is a problem in that the temporary closing operation becomes a troublesome operation, and the number of devices and members to be prepared increases. The present invention has been made in view of such a situation, and has as its object to provide means capable of solving the above-described problems.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a jig for connecting and connecting a pipe to a pipe end, wherein a first connecting portion to a pipe end is provided at one end, and another pipe is connected to the pipe. A second connecting portion for detachably connecting a flexible connecting cylinder member is provided on the other end side, and an opening / closing operation valve is provided between the first connecting portion and the second connecting portion. A reaction force receiving portion for receiving a rear end portion of the plug inserted into the second connecting portion while receiving an elastically deformable plug for pushing the plug into the pipe end and closing the plug is formed in the connection tubular member. The feature is that it is done.

[0005]

After performing a predetermined process while connecting another pipe to the end of the pipe, the pipe including the end of the pipe is temporarily closed to maintain the processing state. When the end of the tube is closed after the connection of the tube is released, when the closing jig of the present invention is employed, the second jig is used.
After connecting the another pipe to the connection portion via the connection pipe member and performing a predetermined process using the other pipe, closing the open / close operation valve to maintain the processing state. Then, a part of the pipeline (that is, the internal pipeline of the closing jig) is temporarily closed. After that, the another pipe is removed together with the connection tube member, the plug is inserted into the second connection portion in a state where it is removed, and the connection tube member is attached to the second connection portion again. And, the insertion rear end of the plug body is received by the reaction force receiving portion of the connection tubular member, and due to the presence of the plug body, even when the opening / closing operation valve is opened,
The closed state of the pipe is maintained without the plug body coming out due to the gas thickness. Therefore, after the opening / closing operation valve is opened, the plug is pushed back and the plug is pushed in all the way, so that the plug comes to the end of the pipe via the opening of the opening / closing valve. , So that the end portion can be plugged.

[0006]

Therefore, after performing a predetermined process while connecting a different pipe to the end of the pipe, the pipe including the end of the pipe is temporarily closed in order to maintain the processing state. In addition, even in the case where the connection of the another pipe is released and the end of the pipe is closed, the squeezing device which was conventionally required for the temporary blockage becomes unnecessary. Therefore, the temporary closing operation is not a troublesome operation as in the case of using a conventional squeezing device and the like, and the number of devices and members to be prepared can be reduced, thereby solving the conventional problem. Will be done.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a new pipe (specifically, a polyethylene pipe) when a new pipe is used as a gas supply pipe, or when a part of an existing gas supply pipe is replaced with a new pipe. A branch joint 2 for air purge is interposed in a part of the new pipe 1.

[0008] Specifically, the branch joint 2 includes a straight cylindrical portion that divides the new pipe 1 and is interposed at the divided portion.
The center portion of the straight cylindrical portion is combined with a joint outlet portion that branches in the orthogonal direction.

The end 2d of the new pipe 1, that is, the new pipe 1
One end of the pipe connection / closing jig 6 according to the present invention is attached to the open end 2d of the joint outlet of the branch joint 2 interposed in a part of the joint.

The pipe connection and closing jig 6 according to the present invention is specifically configured as shown in FIG. That is, on one end side of the closing jig 6, a first connection portion 61 to the end 2 d of the new pipe 1 is provided. The first connecting portion 61 is provided with a locking and fixing operation portion 61a for the end 2d of the new tube 1. In addition, the closing jig 6
On the other end of the tube, a tube 7 different from the new tube 1 (specifically,
After the piping of the new pipe 1, a diffusion pipe 7) used for upwardly dispersing the gas in the pipe is provided at an end 2 d of the new pipe 1 in order to perform air purging of a pipe including the new pipe 1. A second connecting portion 63 is provided for detachably connecting the connectable connection cylinder member 62. An opening / closing operation valve 64 is provided between the first connecting portion 61 and the second connecting portion 63 so as to be capable of opening and closing manually. The connecting tube member 62 includes a large-diameter tube portion 62 a having an inner diameter slightly larger than an outer diameter of the diffusion tube 7 so that a lower end portion of the diffusion tube 7 can be fitted inside, and the second connection portion 63. A female screw portion formed on the inner periphery of the first member and a small screw portion 62b formed on the outer periphery thereof are combined with a male screw portion freely screwable. The lower end of the diffusion tube 7 is bonded to a cylindrical fixing member 8 into which a female screw portion formed on the inner periphery of the connecting tube member 62 and a lower outer male screw portion can be screwed. The lower end of the diffusion tube 7 is connected to the connecting tubular member 62.
The cylindrical fixing member 8 is fitted inside the large-diameter cylindrical portion 62a.
The male screw part on the outer periphery of the lower part and the female screw part on the inner periphery of the second connection part 63 are screwed together to be fixed to the connection cylinder member 62. An elastically deformable plug 9 for pushing the plug into the end 2 d of the new pipe 1 and closing the plug is inserted into the second connection portion 63, and the plug 9 is inserted into the connection tube member 62. A reaction force receiving portion 62d for receiving the rear end 9a of the insertion is formed. Specifically, the lower end surface of the small diameter portion 62b of the connection cylinder member 62 constitutes the reaction force receiving portion 62d.

By using the closing jig 6 having such a configuration, while connecting a radiation pipe 7 different from the new pipe 1 to the end 2 d of the new pipe 1, the new pipe 1 is used by using the radiation pipe 7. End 2d of tube 1
After performing the air purging of the pipeline including the pipe, the pipe including the end 2d of the new pipe 1 is temporarily closed while the connection of the diffusion pipe 7 is released, and then the new pipe 1 is maintained. Tube 1
When the plugging process of the end 2d is performed, the following procedure is performed. That is, first, the first jig in the closing jig 6 is used.
The connecting portion 61 is attached to the end 2d by operating the locking and fixing operation portion 61a. Then, while the diffusion tube 7 is connected to the second connection portion 63 of the closing jig 6 via the connection cylinder member 62, the pipe is air-purged using the diffusion tube 7, and then the air is purged. In order to maintain the purge state, the opening / closing operation valve 64 is closed to temporarily close an appropriate portion of the pipeline including the end 2d of the new pipe 1 (that is, the internal pipeline of the closing jig 6). After that, the diffusion tube 7 was removed together with the connection tubular member 62, and the plug 9 was inserted into the portion of the second connection portion 63 in a state where it was removed, as shown in FIG. When the connection tube member 62 is attached to the second connection portion 63 again, the rear end portion of the plug 9 after insertion is received by the reaction force receiving portion 62d of the connection tube member 62. Due to the presence of the plug 9, even when the opening / closing operation valve 64 is opened, the closed state of the pipeline is maintained. Therefore, after the opening / closing operation valve 64 is opened, as shown in FIG. 2B, the plug 9 is pushed back using the plug pushing tool 10 to push the plug 9 all the way. As a result, the plug 9 is connected to the new pipe 1 via the internal passage of the opening / closing operation valve 64.
At the end 2d of the new tube 1 so that the end 2d of the new tube 1 is closed. After the closure, the closing jig 6 is removed, and a cap stopper for covering the removed portion is attached to the removed portion.

[Other Embodiment] As shown in FIG. 3, the connecting cylinder member 62 is provided inside a lower portion of a base made of a simple cylinder, and a cylindrical body smaller in diameter than the base is provided as the reaction force receiving portion 62d. Another embodiment is also conceivable.

In the claims of the utility model registration, reference numerals are written for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a pipe connection / closing jig according to the present invention.

FIG. 2 is a longitudinal sectional view showing a closing operation of a first pipe end using the closing jig.

FIG. 3 is a longitudinal sectional view showing another embodiment of the pipe connection / closing jig according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 pipe 2d end part 7 another pipe 9 plug 9a insertion rear end part 61 first connection part 62 connection cylinder member 62d reaction force receiving part 63 second connection part 64 opening and closing operation valve

Claims (1)

(57) [Scope of request for utility model registration] 1. A connecting cylinder member which is provided at one end with a first connecting portion (61) for an end (2d) of a pipe (1), and is connectable to a pipe (7) different from the pipe (1). A second connecting portion (63) for detachably connecting (62) is provided on the other end side, and the first connecting portion (61) and the second connecting portion (6) are provided.
An opening / closing operation valve (64) is provided between the second connecting portion (63) and an elastically deformable plug (9) for closing the plug by pushing it into the first pipe end (2d). A reaction force receiving portion (62d) for receiving the inserted rear end portion (9a) of the plug (9) in a state where the plug body (9) is inserted into the inside of the connecting tube member (62) corresponds to a tube end portion formed on the connecting tubular member (62). Connection / closing jig.