JP4166114B2 - Original sealing plug device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a sealing plug device for original arrangementIn placeIt is related.
[0002]
[Prior art]
In general, in gas piping, a pipe (main branch pipe or supply pipe) is branched from a cast iron pipe (main pipe) piped under a road via a branch joint, and this pipe is piped toward a customer. This branched pipe may become unusable depending on the circumstances of the customer, etc., and the main pipe at the branch destination may be removed by reorganizing the main pipe. In such a case, the work of sealing the branching source and removing the unused conduit is called the original organizing work.
[0003]
As this original rearranging work, there is a case where the branch joint is removed from the main pipe and the branch portion of the main pipe is closed, but since the excavation work for digging up the buried branch joint is required, the work becomes large. . For this reason, in consideration of reusing the branch joint, a method for sealing the inside of this branch joint with the original arrangement sealing plug device with the branch joint attached to the main pipe has been conventionally performed. Yes. A conventional technique (for example, refer to Patent Document 1) of such an original arrangement sealing plug device and an original arrangement sealing method will be described with reference to FIGS.
[0004]
FIG. 5 is an explanatory view showing the overall structure of the original organizing seal plug device. As shown in FIG. 1A, the original organizing seal plug device 100 includes a seal plug body 110 and an insertion tool 120. The sealing plug 110 ((b) shows a cross-sectional view thereof) is a gas blocking material that has a large degree of freedom in deformation in the radial direction, and has a low resistance even when the diameter is reduced because the surface is slippery. A plug body 111 made of a porous sponge material is provided.
[0005]
The plug body 111 is formed by forming the above-mentioned sponge material into a truncated cone having a gentle tapered surface 111b, a hole 112 penetrating through the center, and a recess 113 so that it can be easily deformed on the large diameter side. Is formed. The plug body 111 is inserted into the central hole 112 from the recess 113 side through the blind plate 114 and is tightened by the nut 117 through the presser plate 116 at the tip. The socket 115 is integrally attached to the socket 115 by bonding. The socket 115 is provided with an adapter 118 having a square engagement hole 118a at the end.
[0006]
On the other hand, the insertion tool 120 includes a center stem 121 and an insertion stopper 122 provided on the proximal end side of the center stem 121, and an engagement portion that engages with an engagement hole 118 a of the adapter 118 at the distal end of the center stem 121. 121a is formed.
[0007]
FIG. 6 is an explanatory diagram for explaining the original rearranging seal construction method using such an original rearranging seal plug device 100. First, a ball hole 132 is opened in the vicinity of the branch joint 131 in the unused conduit 130, the gas bag 133 is inserted therein, the gas bag 133 is expanded and brought into close contact with the inner surface of the pipe, and from there to the downstream side. The gas supply is temporarily interrupted ((a) in the figure). This step is performed by a no-blow operation using a conventionally used no-blow bag. Thereafter, the no blow bag is removed, and the downstream side of the conduit 130 is purged with gas, and the conduit 130 is cut to a short length of, for example, about 50 cm from the end of the pipe in the branch joint 131 (see FIG. 5B).
[0008]
Then, the original organizing seal plug device 100 is set at the open end 130a of the cut conduit 130 (FIG. (C)), the gas bag 133 is removed, and the ball hole 132 is closed with the plug 134 (FIG. ( d)).
[0009]
Next, the center stem 121 is engaged and connected to the seal plug body 110 of the original arrangement seal plug apparatus 100, and the seal plug body 110 is pushed in from the open end 130a. Here, the cutting length L of the conduit 130 and the length of the center stem 121 ahead of the insertion stopper 122 are set to coincide with each other, and the sealing plug body until the insertion stopper 122 abuts the opening end 130a of the conduit 130. When 110 is pushed in, the seal plug 110 finally reaches the branch opening of the branch joint 131. Thus, the branch opening of the branch joint 131 can be reliably blocked by the seal plug 110 ((e) in the figure).
[0010]
Thereafter, the conduit 130 is removed from the branch joint 131 ((f) in the figure), the opening of the branch joint 131 is further closed with a closing body (bushion) 135, and the air purge hole provided in the seal plug body 110 is opened. After opening and air purging in the closing body 135, the closing body 135 is plugged and the original rearranging work is completed ((g) in the figure).
[0011]
[Patent Document 1]
JP-A-6-50489
[0012]
[Problems to be solved by the invention]
In such a conventional technique, in order to push the seal plug body into an appropriate position in the branch joint, it is necessary to accurately measure and cut the length of the conduit according to the center stem length from the insertion stopper. . At this time, there is a situation where it is difficult to work because there are multiple other buried objects buried in the work site, and if high accuracy is required for the above-mentioned measurement of the cut length of the conduit in such a situation, this measurement takes time. There is a problem that workability deteriorates. In addition, under the working conditions as described above, there may be a difference in measurement method and measurement error for each measurer, and this causes a slight individual difference in the insertion position of the seal plug body. There is.
[0013]
The present invention has been proposed to solve such a problem, and it is possible to seal a proper position in a branch opening in a branch joint regardless of who is working without measuring the cutting length of the conduit. The plug body can be inserted, and the purpose is to improve the workability and construction accuracy in the original arrangement work.
[0014]
[Means for Solving the Problems]
  In order to achieve such an object, the sealing plug device for original arrangement according to the present inventionIsThe features of the following claims are included.
[0015]
  The invention according to claim 1 is a seal plug device for original arrangement that seals a branch opening in the branch joint during the original arrangement work of the pipe branched through the branch joint, and is inserted along the conduit and the branch A sealing plug body for sealing the opening, and the sealing plug body functions in one or both of the front end side and the rear end side in the branch joint so that the seal plug body is disposed in the branch opening. With stopper means to stop at the specified positionA locking means is provided on the distal end side of the sealing plug body to expand the diameter expansion portion of the branch joint in a state where the sealing plug body stops at the branch opening, and the locking means is disposed on the distal end side of the sealing plug body. And a deployment member that is urged so that the tip of the seal plug body is tilted to the front side of the seal plug body, and a deployment that is slidably provided on the seal plug body side by bringing the deployment member into contact with the deployment operation surface An operation panel, and the deployment member is deployed by sliding the deployment operation panel toward the seal plug body.It is characterized by that.
[0016]
According to a second aspect of the present invention, on the premise of the former sealing plug device, the stopper means is slidably supported in a plane perpendicular to the conduit shaft on the rear end side of the sealing plug body. A thin plate-like locking member that is urged in a direction in contact with the inner surface of the conduit, protrudes at a position passing through the pipe end in the branch joint of the conduit, and is locked in a gap in the branch joint. It is characterized by providing.
[0017]
According to a third aspect of the present invention, on the premise of the former sealing plug device for organizing, the stopper means protrudes from the tip end side of the seal plug body, and the tip abuts on the bottom surface in the branch joint. A contact rod for stopping the seal plug in the branch opening is provided.
[0018]
According to a fourth aspect of the present invention, on the premise of the original arrangement sealing plug device, the sealing plug body includes a plug body made of an elastic member pressed against the inner surface of the branch opening, and a distal end side of the plug body. A support plate provided; a support shaft attached to the support plate and penetrating through the plug body from the front end toward the rear end; and projecting toward the rear end side; and the support shaft in contact with a rear end surface of the plug body And a compression plate that compresses and expands the plug main body with the support plate, and a compression tool that slides the compression plate along the support shaft.
[0019]
According to a fifth aspect of the present invention, on the premise of the above-described original arrangement sealing plug device, the side surface of the plug main body is a cylindrical surface pressed against the inner surface of the branch opening by the compression diameter expansion, and rearward from the cylindrical surface. And a tapered surface that is enlarged in diameter.
[0022]
  Claim6The invention according to the present invention is based on the above-described original arrangement sealing plug device, and compresses the compression tool and is connected to the rear end side of the sealing plug body to push the sealing plug body into the branch opening. It further has an insertion means.
[0023]
  Claim7The invention according to the present invention further comprises centering support means for inserting the compression operation insertion means along the central axis of the conduit and supporting the opening end of the conduit on the premise of the above-described original arrangement sealing plug device. Features.
[0024]
The invention according to claim 10 is a sealing plug body for sealing the branch opening in the original rearranging sealing method for sealing the branch opening in the branch joint during the original rearrangement work of the conduit branched through the branch joint. Using either the front end side or the rear end side of the sealing plug device for rearranging provided with stopper means that functions in the branch joint and stops the seal plug body at a specified position in the branch opening, The sealing plug body is inserted from an opening end of the conduit, and the sealing plug body is pushed in until the sealing plug body stops in the branch opening.
[0025]
The invention according to each claim having such characteristics has the following actions.
[0026]
1stly, the sealing plug body in the sealing plug apparatus for original arrangement | positioning of this invention functions in a branch joint at any one or both of the front end side and the rear end side, and a sealing plug body is put in a branch opening. Since the stopper means for stopping at the specified position is provided, the stopper means functions in the branch joint simply by pushing the seal plug into the conduit, and the seal plug can be stopped at the proper position of the branch opening.
[0027]
Therefore, it is not necessary to measure the length of the pipe cut that has been done in the past, so it is possible to shorten the construction time, and the work itself for inserting the seal plug is simplified, so the workability is remarkably improved. Can be made. And since the insertion position of the seal plug body is defined by the stopper means that functions in the branch joint, it becomes possible to insert the seal plug body at the specified position regardless of who works, and the construction accuracy can be improved. it can. Further, when the stopper means is provided on both the front end side and the rear end side of the seal plug body, the above-described action can be obtained by the other stopper means even if one stopper means does not function due to some trouble. It is possible to secure more accurate construction accuracy.
[0028]
Secondly, as a stopper means, a thin plate-like locking member is provided on the rear end side of the seal plug body, so that this locking member is locked in a gap formed at the end of the pipe end in the branch joint. Thus, the sealing plug itself can be accurately stopped in the branch opening of the branch joint. That is, this locking member is slidably supported in a plane perpendicular to the conduit axis, and is biased in a direction to contact the inner surface of the conduit, so that the locking member has passed through the pipe end of the conduit. If there is a gap, the protrusion protrudes into the gap and is locked. Usually, such a gap exists in the branch joint, and this can be used to accurately position the seal plug in the branch opening.
[0029]
Thirdly, as the stopper means, the contact rod protrudes from the distal end side of the seal plug body, so the distal end of the contact rod contacts the bottom surface of the branch joint, and the seal plug body itself is the branch joint. It can stop exactly in the branch opening. According to this, the seal plug body can be accurately positioned in the branch opening with a simple structure by setting the length of the contact bar appropriately.
[0030]
Fourthly, in addition to the above-described action, the seal plug body is provided with means for compressing and expanding the plug body in the state where the seal plug body is pushed into the branch opening of the branch joint. It is possible to compress and expand the stopper body and press it against the inner surface of the branch opening, and high sealing performance can be obtained.
[0031]
Fifth, in combination with the above-mentioned action, the side surface form of the plug body in the seal plug body is made up of a cylindrical surface and a tapered surface that expands from the cylindrical surface toward the rear. By sealing the branch opening by compressing and expanding the diameter, uniform airtightness can be obtained over a wide pressure contact area, and the airtightness during insertion of the conduit can be reduced only by pressure contact with the tapered surface. It is possible to make the work progress smoothly.
[0032]
Sixth, in addition to the above-described action, a locking means is provided on the distal end side of the seal plug body so that the seal plug body expands to the enlarged diameter portion of the branch joint while being stopped at the branch opening. Safe construction safety.
[0033]
Seventh, as a locking means, a deployment member is provided on the distal end side of the seal plug body so that the distal end thereof is tilted forward, so that the deployment member contacts the inner surface of the conduit when the seal plug body is inserted. Smooth insertion is possible. Then, the expansion member is unfolded by sliding the unfolding operation panel to the seal plug body side, whereby the seal plug body can be reliably locked in the branch opening.
[0034]
Eighth, in combination with the above-mentioned operation, a compression operation insertion means for compressing a compression tool provided on the rear end side of the seal plug body and connecting the compression tool to the rear end side of the seal plug body and pushing it into the branch opening Further, the seal plug body can be inserted by being pushed in from the rear end side, and when the seal plug body reaches the branch opening position, a compression operation can be performed to compress and expand the plug body.
[0035]
Ninth, since the compression operation inserting means is further inserted along the central axis of the conduit and is further supported by the open end of the conduit, the centering support is attached to the open end of the conduit and the sealing plug is attached. By performing the body insertion work, there is no trouble such as the seal plug body being inclined and inserted, and a smooth and accurate work can be realized. Moreover, since the compression operation insertion means is supported by the opening end of the conduit even during the compression operation, it is possible to avoid the positional displacement of the seal plug body once positioned.
[0036]
Tenth, according to the construction method using such an original arrangement seal plug device, the seal plug body stops at a specified position in the branch joint simply by pushing in the seal plug body. The seal plug can be inserted at an appropriate position in the branch opening, and the workability and work accuracy in the original rearranging work can be improved.
[0037]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The seal plug device for original arrangement according to the embodiment of the present invention mainly includes a seal plug body, and includes a compression operation insertion means and a centering support means described later as accessories..
[0038]
In FIG. 1 (FIG. 1 (a) is a front partial sectional view, and FIG. 1 (b) is a plan view), a sealing plug body 10 is pressed against the inner surface of the branch opening of the branch joint to seal the branch opening 11. Is provided. The plug body 11 is an elastic member made of a porous sponge material that is often used as a gas blocking material and has a large degree of freedom of deformation in the radial direction and a surface that is processed to be slippery. It has a cylindrical surface 11a in a relatively wide region, and has a tapered surface 11b whose diameter increases from the cylindrical surface 11a toward the rear and a cut surface 11c whose diameter decreases toward the front. Further, in order to facilitate compression and expansion deformation, the plug body 11 is provided with a cavity 11d inside, and a through hole 11e penetrating from the front end toward the rear end is formed at the center.
[0039]
The plug body 11 has a front end surface 11f supported by a support plate 12, and a support shaft 13 mounted on the support plate 12 is inserted into the through hole 11e. The support shaft 13 is a rear end surface. It protrudes to the 11g side.
[0040]
A compression plate 15 is in contact with the rear end surface 11 g of the plug body 11. A support shaft 13 passes through the central hole of the compression plate 15, and the compression plate 15 can slide along the support shaft 13. Further, a screw portion 13a is formed on the rear end side of the support shaft 13, and the compression tool 16 is screwed into the screw portion 13a. Therefore, when the compression tool 16 is tightened, the compression plate 15 slides toward the distal end side, and the plug body 11 is compressed between the support plate 12 and the compression plate 15 and expanded in the circumferential direction. A gas hole 13b passes through the support shaft 13, and the gas hole 13b is closed by mounting a purge pin 13c. Further, the compression plate 15 is provided with a connecting portion 17 having a screw portion 17a formed inside.
[0041]
  And,A locking member 18 serving as a first stopper means is provided on the rear end side of the plug 10. The locking member 18 is a thin plate-like member, one end of which is supported by a shaft 18b between the compression plate 15 and the retracting plate 18a, and is in a plane perpendicular to the conduit axis (a plane parallel to the compression plate 15). Is slidably supported by the shaft. Further, a spring 18c is mounted on the shaft 18b, and urges the locking member 18 in a direction in which the locking member 18 comes into contact with the inner surface of the conduit (the arrow direction in FIG. 5B).
[0042]
The locking member 18 is provided with a locking hole 18d that matches the locking hole 18e formed in the retracting plate 18a, and the locking member 18 is retracted against the bias of the spring 18c. The pin is retracted below 18a and can be pinned by inserting a pin into the locking holes 18e, 18d.
[0043]
  Furthermore,A contact bar 19 serving as second stopper means is provided on the distal end side of the plug 10. The contact bar 19 is connected to the distal end of the purge pin 13c by a threaded portion 19a and is provided to project to the distal end side of the seal plug body 10. The length of the contact bar 19 is set to be approximately equal to the distance from the base of the branch opening in the branch joint to the bottom surface of the branch joint. Further, the contact rods 19 having different set lengths can be exchanged according to the size of the branch joint.Illustrated formIn the above, an example in which both the first stopper means and the second stopper means are provided is shown, but one of these stopper means may be removed.
[0044]
The support plate 12 provided on the distal end side of the seal plug body 10 is provided with a deployment member 14 that forms a locking means around the support plate 12. This deploying member 14 is an elastic plate that is projected in four directions along the support plate 12, and is curved to the side of the plug body 11 when subjected to resistance in the direction of the arrow in the figure against the elastic force. It has become.
[0045]
  FIG.The sealing plug 10 of the present inventionIt is explanatory drawing which shows embodiment (the above-mentionedForm ofThe same parts are denoted by the same reference numerals, and a part of overlapping description is omitted. FIG. 4A is a front partial sectional view, and FIG. 4B is a plan view showing a mounting state of the developing member. ). In this embodiment, the form of the locking means is changed, and only the first stopper means is equipped as the stopper means.
[0046]
The locking means of this embodiment includes a deployment member 23 that is pivotally supported on the distal end side of the seal plug 10 and a deployment operation panel 20 that deploys the deployment member 23. As shown in FIG. 5B, the developing member 23 is attached in a state of being spring-biased so that one end is pivotally supported around the support plate 12 and the tip thereof falls to the front side of the seal plug body 10. Yes. Further, the unfolding operation panel 20 is attached to the tip of the operation shaft 21 and is arranged so as to slide toward the seal plug body when the operation tool 22 is tightened. The unfolding operation panel 20 is provided with a tapered unfolding operation surface 20a, and one end of the unfolding member 23 comes into contact with the unfolding operation surface 20a. Then, by sliding the unfolding operation panel 20 to the seal plug body side, the unfolding operation surface 20a pushes up the unfolding member 23 against the spring bias, and unfolds so that the unfolding member 23 projects to the periphery. ing.
[0047]
  Figure 3, OriginalIt is explanatory drawing which shows the usage condition of the sealing sealing plug apparatus. In the figure, FIG.Form ofThe example which uses the seal plug body 10 concerning is shownHowever, this can be changed to the embodiment of FIG.When the seal plug 10 is inserted into the branch conduit 2 joined to the branch joint 1, a compression operation rod 30 and an insertion rod 31 as compression operation insertion means and a centering support 32 as a centering support means are used. It is done.
[0048]
The compression operation rod 30 is provided with a fitting portion 30a fitted to the compression tool 16 at the distal end, and the handle 30b can be attached to and detached from the proximal end. Further, the insertion rod 31 is a cylindrical body in which a screw portion 31a that is screwed into the screw portion 17a of the connecting portion 17 is provided on the outer periphery of the distal end, and a hollow portion 31b that can accommodate the compression operation rod 30 is formed therein. .
[0049]
The centering support tool 32 includes a support portion 32a attached to the open end 2a of the branch conduit 2 and an insertion portion 32b for inserting the insertion rod 31 along the central axis of the branch conduit 2, and the support portion 32a. Is provided with a fixing screw 32c for fixing the centering support 32 to the open end 2a, and the insertion portion 32b is provided with a fixing screw 32d for fixing the insertion rod 31 at the insertion completion position.
[0050]
  like thisNamotoThe function of the organizing seal plug device will be described with reference to FIGS.
[0051]
Stopper means;
The locking member 18 constituting the first stopper means has the seal plug body 10 inserted into the branch conduit 2 in a state of being retracted under the retracting plate 18a. It abuts on the inner surface of the conduit 2. When the sealing plug 10 is pushed in by the insertion rod 31 in this state, the locking member 18 is engaged in the gap G formed at the position where the locking member 18 passes the pipe end 2b in the branch joint 1. Will be stopped.
[0052]
That is, the locking member 18 is a thin plate-like member that is slidable in a plane perpendicular to the conduit axis and is biased by a spring toward the inner surface of the conduit. When the restriction from is released, it protrudes in the peripheral direction and is inserted into the gap G. The gap G is formed in the normal branch joint 1. The locking member 18 is a thin plate member and is slid in a plane perpendicular to the conduit axis. The stopper means can be used in the branch joint 1 by utilizing it.
[0053]
Since the locking member 18 is provided on the rear end surface of the seal plug body 10, when the locking member 18 is locked in the gap G after passing through the pipe end 2b, the plug body 11 is just the branch joint 1. Therefore, the plug body 11 can be stopped at a specified position in the branch opening 1a simply by pushing the seal plug body 10 into the branch opening 1a.
[0054]
Further, since the contact bar 19 constituting the second stopper means is provided so as to protrude from the distal end side of the seal plug 10, when the seal plug 10 is pushed by the insertion bar 31, the contact bar 19. The tip of the abutment comes into contact with the bottom surface 1b of the branch joint 1, and the seal plug 10 can be stopped at this position. Here, by setting the length of the contact bar 19 to be substantially equal to the distance D from the base end of the branch opening 1a to the bottom surface 1b of the branch joint, the stopper body 11 can be stopped at a specified position in the branch opening 1a. it can. Therefore, the plug body 11 can be stopped at a specified position in the branch opening 1a simply by pushing the seal plug body 10 in this manner.
[0055]
Such a first stopper means and a second stopper means can provide a sufficient function with only one of them, but by providing two stopper means together, the position of the seal plug body can be regulated more reliably. It becomes possible to do.
[0056]
Locking means;
The deployment member 14 (see FIGS. 1 and 3) constituting the locking means will be described. When the seal plug body 10 moves in the branch conduit 2, the deployment member 14 is curved toward the plug body 11 side. The deployment member 14 abuts on the inner surface of the conduit by an elastic drag, and the elastic drag acts evenly around the center to center the tip position of the seal plug body 10. Then, when the seal plug 10 is stopped at the branch opening 1a, it is released from restraint by the inner surface of the conduit, so that the deployment member 14 is deployed to the enlarged diameter portion of the branch joint 1 as shown in FIG. The body 10 is locked.
[0057]
In addition, when the locking means of the embodiment shown in FIG. 2 is used, the deployment member 23 is in a state of being tilted forward when the seal plug 10 is inserted, so that it is smooth without contacting the inner surface of the conduit. A simple seal plug 10 can be inserted. Then, after the sealing plug 10 is fixed to the branch opening 1a in the branch joint 1, the operation tool 22 is tightened using a necessary tool, the expansion operation panel 20 is slid toward the seal plug, and the expansion member 23 is attached. Unfold to project around. As a result, the expanding member 23 expands to the enlarged diameter portion of the branch joint 1 to lock the seal plug 10.
[0058]
Sealing performance;
Further, since the sealing plug body 10 is provided with means for compressing and expanding the plug body 11 in the sealing plug body 10 in a state where the sealing plug body 10 is pushed into the branch opening 1a of the branch joint 1, the plug body 11 made of an elastic member is provided. It can be compressed and expanded to be pressed against the inner surface of the branch opening 1a, and high sealing performance can be obtained even if the branch opening diameter of the branch joint 1 is slightly different.
[0059]
Moreover, since the side surface form of the plug main body 11 in the seal plug body 10 is made up of a cylindrical surface 11a and a tapered surface 11b that expands from the cylindrical surface 11a toward the rear, the cylindrical surface 11a is compressed and expanded. By sealing the branch opening, uniform airtightness can be obtained with a wide pressure contact area, and the airtightness during insertion of the branch conduit 2 can be reduced only by pressure contact by the tapered surface 11b. Smaller and smoother work progress becomes possible.
[0060]
  less than,The aforementionedThe main steps of the original arrangement sealing method using the rubber plug device will be described with reference to FIGS.
[0061]
As the first step, the gas pipe is shut off by a gas bag similar to the prior art in the vicinity of the branch joint with respect to the pipe in the live pipe state, and the pipe for the original rearrangement work is purged to the downstream side with respect to the gas bag. Cut the conduit at the appropriate position. At this time, in the construction method of the present embodiment, the process of measuring the cut length of the conduit is not required, so that workability is improved.
[0062]
As a second step, the sealing plug 10 is inserted from the open end 2a of the cut branch conduit 2, the gas bag in the conduit is removed, and then the compression operation rod 30 is placed on the rear end side of the sealing plug 10. The centering support 32 is attached to the open end of the conduit. Then, the seal plug body 10 is pushed in until the seal plug body 10 stops in the branch opening 1 a of the branch joint 1. At this time, in the construction method according to the present embodiment, the seal stopper 10 need only be pushed in until the first or second stopper means functions in the branch joint 1. Even if it goes, the sealing plug 10 can be surely stopped at the specified position.
[0063]
As a third step, the sealing plug 10 is locked by the locking means after the sealing plug 10 is stopped at a specified position in the branch opening 1a. At this time, in the case of the locking means of the embodiment shown in FIG. 1, no particular operation is required, and the deployment member 14 is naturally deployed by its own elasticity and locked. In the case of the locking means of the embodiment shown in FIG. 2, the unfolding member 23 is unfolded by sliding the unfolding operation panel 20 by the above-described operation.
[0064]
As a fourth step, the fitting portion 30a of the compression operation rod 30 is fitted to the compression tool 16, the handle 30b is attached to the proximal end of the compression operation rod 30, and this handle 30b is rotated to rotate the compression tool 16. Tighten. As a result, the plug body 11 is compressed and expanded between the support plate 12 and the compression plate 15, and the side surface of the plug body 11 is pressed against the inner surface of the branch opening 1a. The compression operation at this time is performed after the insertion rod 31 is fixed by the fixing screw 32d of the centering support 32. As a result, the plug body 11 is compressed toward the rear end side, and compression and diameter expansion can be performed in a state where the position of the plug body 11 is ensured at an appropriate position. Thereafter, the joint portion of the branch joint 1 is disassembled, and the branch conduit 2 that is the target of the original organization work is removed from the branch joint 1 and removed.
[0065]
FIG. 4 is an explanatory view showing a branch opening sealing state after the final original arrangement work. The compression operation rod 30 and the insertion rod 31 are removed from the seal plug 10 and the first stopper means is removed from the rear end side of the seal plug 10. And, in the open part of the branch joint 1, a bowl-shaped bushing 43 is attached by the seal member 41 and the holding ring 42. Thereafter, the contact rod 19 that constitutes the second stopper means together with the purge pin 13c is removed by operating from the opening 43a of the bushing 43, and the gas hole 13b in the support shaft 13 is opened to the rear end side of the seal plug body 10. Gas pressure is also generated on the rear end side of the sealing plug 10. Then, by closing the opening 43a of the bushing 43 with the stopper 44, the original rearranging operation is completed.
[0066]
According to the original rearrangement sealing method of the embodiment having such steps, the seal plug body can be inserted at an appropriate position in the branch opening 1a in the branch joint 1 regardless of who is working, and workability in the original rearrangement work. And improvement of construction accuracy can be aimed at. Furthermore, airtight uniformity and high sealing performance can be obtained by the aforementioned steps.
[0067]
【The invention's effect】
Since the present invention is configured as described above, it is possible to insert a seal plug at an appropriate position in the branch opening in the branch joint, regardless of who is working, without measuring the cutting length for the original organizing target conduit. It is possible to improve workability and construction accuracy in the original rearranging work.
[Brief description of the drawings]
[Figure 1]OriginalIt is explanatory drawing which shows the structure of the sealing plug body in the sealing plug device for arrangement | sequence.
[Figure 2]It is explanatory drawing which shows the structure of the seal plug body in the seal plug apparatus for former arrangement | positioning which concerns on embodiment of this invention.
[Fig. 3]OriginalIt is explanatory drawing which shows the usage condition of the sealing sealing plug apparatus.
[Fig. 4]OriginalIt is explanatory drawing which shows the branch opening sealing state after the last original rearrangement work by the rearrangement seal construction method.
FIG. 5 is an explanatory view showing an entire structure of a conventional sealing plug device for original arrangement.
FIG. 6 is an explanatory view for explaining a conventional original arrangement sealing method.
[Explanation of symbols]
1 Branch joint 1a Branch opening 1b Bottom
2 Branch conduit 2a Open end 2b Pipe end
10 Seal plug
11 Plug body 11a Cylindrical surface 11b Tapered surface
11c Cut surface 11d Cavity 11e Through hole
11f Front end surface 11g Rear end surface
12 Support plate
13 Support shaft 13a Screw part 13b Gas hole
13c Purge pin
14 Deployment member
15 Compression plate
16 Compression tool
17 Connecting part 17a Screw part
18 Locking member 18a Retraction plate 18b Shaft
18c Spring 18d, 18e Locking hole
19 Contact rod 19a Screw part
20 Unfolding operation panel 20a Unfolding operation surface
21 Operation axis
22 Operation tool
23 Deployment member
30 Compression operation rod 30a Fitting part 30b Handle
31 Insertion bar 31a Screw part
32 Centering support tool 32a Support part 32b Insertion part
32c, 32d fixing screw
G gap

Claims (7)

In the original arrangement sealing plug device for sealing the branch opening in the branch joint in the original arrangement work of the pipe branched through the branch joint,
A sealing plug inserted along the conduit to seal the branch opening;
The seal plug body is provided with stopper means for functioning in the branch joint to stop the seal plug body at a specified position in the branch opening at one or both of the front end side and the rear end side thereof ,
Provided on the distal end side of the seal plug body is a locking means that expands to a diameter-enlarged portion of the branch joint in a state where the seal plug body stops at the branch opening,
The lock means is pivotally supported on the distal end side of the seal plug body, and has a deployment member urged so that the distal end thereof falls to the front side of the seal plug body, and the deployment member is brought into contact with the deployment operation surface. An unfolding operation panel provided slidably on the seal plug body side, and the unfolding operation of the unfolding member is performed by sliding the unfolding operation panel to the seal plug body side. apparatus.   The stopper means is slidably supported in a plane perpendicular to the conduit shaft on the rear end side of the seal plug body, and is urged in a direction in contact with the inner surface of the conduit, so that the branching of the conduit is performed. 2. The sealing plug device for original arrangement according to claim 1, further comprising a thin plate-like locking member that protrudes at a position passing through a pipe end in the joint and is locked in a gap in the branch joint. .   The stopper means includes a contact bar that protrudes from the distal end side of the seal plug body and stops the seal plug body in the branch opening by contacting the bottom surface of the branch joint. The sealing plug device for original arrangement according to claim 1 or 2.   The seal plug body includes a plug main body made of an elastic member pressed against the inner surface of the branch opening, a support plate provided on the front end side of the plug main body, and attached to the support plate from the front end toward the rear end. A support shaft that penetrates through the plug body and protrudes toward the rear end side, and abuts against a rear end surface of the plug body and slides along the support shaft to compress and expand the plug body between the support plate and the support plate. The original sealing plug device according to any one of claims 1 to 3, further comprising a compression plate having a diameter and a compression tool that slides the compression plate along the support shaft.   The side surface of the plug main body has a cylindrical surface pressed against the inner surface of the branch opening by the compression expansion, and a tapered surface expanded in diameter from the cylindrical surface to the rear. The original sealing plug device described. 6. The compression operation insertion means which compresses the compression tool and is connected to a rear end side of the seal plug body and pushes the seal plug body into the branch opening. from which it was originally organized for the sealing plug devices. The original arrangement sealing plug device according to claim 6, further comprising centering support means for inserting the compression operation insertion means along the central axis of the conduit and supporting the compression operation insertion means on the open end of the conduit. .

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