JP6964879B2 - Leakage repair structure and leak repair tool - Google Patents

Description

The present invention relates to a leak repair technique for covering a fluid leak portion of a pipe end of a fluid pipe in a sealed state.

As the above-mentioned leak repair technique, for example, there is a leak repair joint of a pipeline end device disclosed in Patent Document 1. This leak repair joint is provided with a leak repair joint body arranged so as to surround the entire air valve flanged to the pipe end of the fluid pipe, and a push ring flange fixed to the pipe end of the fluid pipe. ing.
The leak repair joint body is welded to the cylindrical case that covers the entire air valve and the flange at the end of the fluid pipe, the cover that is welded with the upper end opening of the cylindrical case sealed, and the lower end of the cylindrical case. It is provided with an annular mounting flange. The annular mounting flange is provided with an annular first packing that seals between the contact surfaces with the push ring flange.
The push ring flange has a split flange portion having a two-split structure that can be mounted from the outside in the pipe radial direction with respect to the pipe end portion of the fluid pipe. By pulling the connecting pieces formed at the split ends of the two split flanges with the first bolts and first nuts along the joining direction of the two split flanges and fixing them, the two split flanges can be connected to the fluid pipe. It is fixed to the end of the pipe in a hugging state.
Both the split flange portions of the push ring flange and the annular mounting flange of the leakage repair joint body are fixedly connected from the pipe axis direction by a plurality of second bolts and second nuts arranged at predetermined intervals in the pipe circumferential direction. A second packing in contact with the outer peripheral surface of the pipe end portion of the fluid pipe is arranged between the packing receiving plate mounted on the annular recess at the lower end of the cylindrical case and the push ring flange. This second packing is compressed between the packing receiving plate on the cylindrical case side and the push ring flange by the tightening operation of the second bolt and the second nut, and the inner peripheral edge of the push ring flange and the outer periphery of the pipe end portion of the fluid pipe are compressed. Seal between the surfaces.

JP-A-2007-170475

In the above-mentioned leak repair joint, a dedicated leak repair joint body manufactured with dimensions corresponding to piping equipment such as an air valve flanged to the pipe end of the fluid pipe and the leak repair joint body are fixedly connected in a sealed state. It is necessary to prepare a dedicated push ring flange to be used. Therefore, it takes a lot of time and effort to manufacture the leak repair joint body and the push ring flange, and the manufacturing cost of the leak repair joint rises.
Moreover, when attaching the leak repair joint to the pipe end of the fluid pipe, first, both split flanges of the push ring flange are fixedly connected to the pipe end of the fluid pipe with the first bolt and the first nut, and the upper surface side of the push ring flange is connected. The second packing and the packing receiving plate are arranged in. In this state, surround the piping equipment such as the air valve with the cylindrical case of the leak repair joint body, and seal the two split flanges of the push ring flange and the annular mounting flange of the leak repair joint body with the second bolt and the second nut. A work process of fixed connection is required, and it takes a lot of time and effort to install the leak repair joint.
In particular, if the second bolt and second nut are tightened while the cover of the leak repair joint body is in contact with the upper surface of the piping equipment, the tightening force is applied to the piping equipment via the cover, so the base of the piping equipment There is a possibility of adversely affecting the leaked part generated by such as.

In view of this situation, a main object of the present invention is to provide a leak repair structure and a leak repair tool capable of efficiently performing leak repair work on a fluid leak portion of a fluid pipe terminal at a low cost.

The first characteristic configuration of the present invention is a leak repair structure that covers the fluid leak portion of the tube end of the fluid pipe in a sealed state.
A joint provided with a plurality of split joints that can be externally fixed from the outside in the pipe radial direction while the fluid leakage portion is sealed with respect to the fluid pipe, and pipe holding portions at both ends of the pipe shaft core of the joint. of a plug member for closing the tube holding portions from the tube terminal one that is spaced outward of the pipe axis direction of the fluid pipe in a sealed condition, the tube terminal of said fluid conduit and said plug member A fixed connecting portion provided between the side and the plug member is fixedly connected to the pipe end side of the fluid pipe through the inside or the outside of the joint, and the plug member is one of the pipes. At the arrangement position of the holding portion, the fixed connecting portion is fixedly connected to the pipe end side of the fluid pipe, and the joint is exteriorized with the holding portions of both pipes abutted against the fluid pipe and the plug member. It is at a fixed point.

According to the above configuration, when executing the leak repair work for the fluid leakage portion of the pipe terminal of the fluid pipe, first, the plug member is fixedly connected to the pipe terminal side of the fluid pipe by a fixed connecting portion. Next, a plurality of split joint bodies of the joint are externally fixed from the outside in the pipe radial direction over the pipe end portion of the fluid pipe and the plug member. In this exterior fixed state, both pipe holding portions of the joint can hold the pipe end portion and the plug member of the fluid pipe in a sealed state, and can cover the fluid leakage portion of the pipe end of the fluid pipe in a sealed state.
Therefore, as the joint, a general-purpose water leakage repair metal fitting or a water leakage repair joint having a split structure having pipe holding portions at both ends of the pipe shaft core can be used as it is, so that one pipe holding portion of the joint can be used as it is. All that is required is to manufacture a plug member that closes in a sealed state. Therefore, the leak repair work for the fluid leak portion of the tube end of the fluid pipe can be carried out efficiently and at low cost.

The second characteristic configuration of the present invention is that the fixed connecting portion is provided between the plug member and the pipe end side of the fluid pipe in the first internal space of the joint.

According to the above configuration, the fixed connecting portion for fixing and connecting the plug member to the pipe end side of the fluid pipe is arranged in the first internal space of the joint. Therefore, for example, when the fixed connecting portion is arranged outside the joint. As described above, it is possible to prevent the fixed connecting portion from colliding with another object and being deformed or damaged.

The third characteristic configuration of the present invention is that the plug member includes a bottomed cylindrical plug body that can be arranged through the pipe holding portion of one of the joints in a sealed state, and the plug is located in the joint. The inner end of the main body is provided with a connecting protrusion with respect to the fixed connecting portion.

According to the above configuration, since it is sufficient that the plug member can be pierced through one of the pipe holding portions of the joint in a sealed state, it is possible to configure a simple structure in which a connecting protrusion is provided on the bottomed cylindrical plug body. This makes it possible to promote cost reduction of leak repair work.

The fourth characteristic configuration of the present invention is that the fixed connecting portion is provided with a load receiving portion that receives the load of the joint.

According to the above configuration, since the load receiving portion is provided in the fixed connecting portion for fixing and connecting the plug member to the pipe end side of the fluid pipe, the load of the joint in contact with the load receiving portion of the fixed connecting portion is applied to the pipe terminal. Can be supported on the side. Therefore, it is possible to facilitate the attachment work of the joint and prevent the attached joint from slipping off without imposing a load on the piping equipment such as the air valve provided at the pipe end of the fluid pipe.

The fifth characteristic configuration of the present invention is that the plug member is formed with a second internal space into which a part of the piping equipment connected to the pipe end of the fluid pipe can enter.

According to the above configuration, piping equipment such as an air valve provided at the pipe end of the fluid pipe enters the second internal space of the plug member, so that the joint can be used even if the total length in the pipe axis direction is small. This makes it possible to reduce the cost of leak repair work.

The sixth characteristic configuration of the present invention is a leak repair tool that covers the fluid leak portion of the tube end of the fluid pipe in a sealed state.
A joint provided with a plurality of split joints that can be externally fixed from the outside in the pipe radial direction while the fluid leakage portion is sealed with respect to the fluid pipe, and pipe holding portions at both ends of the pipe shaft core of the joint. Of these, a plug member that closes the pipe holding portion that is spaced apart from the pipe end of the fluid pipe to the outer side in the pipe axis direction in a sealed state, and the pipe end of the plug member and the fluid pipe. A fixed connecting portion provided between the side and at a position where the pipe holding portion is arranged, and a fixed connecting portion for fixing and connecting the plug member to the pipe end side of the fluid pipe through the inside or the outside of the joint. Is provided.

According to the above configuration, when executing the leak repair work for the fluid leakage portion of the pipe terminal of the fluid pipe, first, the plug member of the leak repair tool is fixedly connected to the pipe terminal side of the fluid pipe by the fixed connecting portion. The fixing position of the plug member is the arrangement position of one of the pipe holding portions at both ends of the pipe shaft core of the joint, which is separated from the pipe end of the fluid pipe. Next, a plurality of split joint bodies of the joint are externally fixed from the outside in the pipe radial direction over the pipe end portion of the fluid pipe and the plug member. In this exterior fixed state, both pipe holding portions of the joint can hold the pipe end portion and the plug member of the fluid pipe in a sealed state, and can cover the fluid leakage portion of the pipe end of the fluid pipe in a sealed state.
Therefore, as the joint, a general-purpose water leakage repair metal fitting or a water leakage repair joint having a split structure having pipe holding portions at both ends of the pipe shaft core can be used as it is, so that one pipe holding portion of the joint can be used as it is. All that is required is to manufacture a plug member that closes in a sealed state. Therefore, the leak repair work for the fluid leak portion of the tube end of the fluid pipe can be carried out efficiently and at low cost.

In the seventh characteristic configuration of the present invention, the plug member includes a plug body in which a lid plate is continuously provided at one end of a tubular body that can be arranged through the pipe holding portion of one of the joints in a sealed state. A point is that a connecting protrusion with respect to the fixed connecting portion is provided on the outer peripheral surface of the inner end portion of the tubular body located in the joint.

According to the above configuration, since it is sufficient that the plug member can be pierced through one of the pipe holding portions of the joint in a sealed state, a connecting protrusion is provided on the plug body in which a lid plate is continuously provided at one end of the cylinder. It is possible to construct such a simple structure, and it is possible to promote the cost reduction of the leak repair work.

Semi-cross-sectional front view of the leak repair structure showing the first embodiment of the present invention. Semi-sectional plan view of the leak repair structure Side view of leak repair structure Separation development view of leak repair structure Semi-sectional plan view of the plug member Half-section front view of plug member Sectional drawing of leakage repair structure which shows 2nd Embodiment of this invention

Embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
In the pipeline structure shown in FIGS. 1 and 4, a fluid pipe is used as an example of the piping equipment M on the flange 2 at the upper end of the fluid pipe 1 for branching extending upward from the fluid main (not shown). A metal flange plate 3 that closes the pipe end opening of No. 1 in a sealed state is arranged. The flange plate 3 is fixedly connected to the flange 2 of the fluid pipe 1 by a plurality of sets of first bolts 4 and first nuts 5 arranged at predetermined intervals in the pipe circumferential direction.
The fluid pipe 1 of the present embodiment is a ductile cast iron pipe constituting a water pipe for transporting tap water (tap water) which is an example of fluid, but other cast iron pipes, steel pipes, resin pipes and the like are used. be able to. Further, as the fluid, gases such as industrial water and gas can be mentioned in addition to tap water.
In the above-mentioned pipeline structure, the packing (not shown) that seals between the flange 2 of the fluid pipe 1 and the flange plate 3 has deteriorated over time, the pipe end 1A of the fluid pipe 1 and the welded portion at the base of the flange 2. When a fluid leak occurs due to corrosion or the like, a leak repair operation is performed to cover the fluid leak portion of the pipe end of the fluid pipe 1 in a sealed state.
The present invention has developed a leak repair structure capable of efficiently performing leak repair work on a fluid leak portion of a pipe terminal of a fluid pipe 1 as described above at low cost, and a leak repair tool A used therefor. , The leak repair structure and the leak repair tool A will be described in detail below.

As shown in FIGS. 1 to 4, the leak repair tool A used in the leak repair structure is a plurality of split joints that can be externally fixed from the outside in the pipe radial direction in a state where the fluid leak portion is sealed with respect to the fluid pipe 1. The joint 20 provided with the body 21, the plug member 30 that closes one of the pipe holding portions 22 at both ends of the pipe shaft core of the joint 20 in a sealed state, and the plug member 30 are placed on the pipe end side of the fluid pipe 1. A fixed connection portion 40 for fixed connection is provided.
In the present embodiment, the joint 20 is a metal (cast iron, etc.) water leak repair metal fitting or a water leak repair joint (for example, a water leak repair joint) which is a general-purpose product having a two-part structure in which pipe holding portions 22 are provided at both ends of the pipe shaft core. , Owl joint) is used. As shown in FIGS. 1 to 4, each of the two split joint bodies 21 of the joint 20 composed of the water leakage repair metal fitting or the water leakage repair joint has a semi-cylindrical shape with a radius larger than the outer diameter of the fluid pipe 1. A peripheral wall portion 21A to be formed and a pair of side wall portions 21B integrally formed at both ends of the peripheral wall portion 21A toward the tube axis are provided. On the pipe axis side of both side wall portions 21B of each split joint body 21, a semi-cylindrical split pipe holding end portion 21C constituting a pipe holding portion 22 having an inner diameter slightly larger than the outer diameter of the fluid pipe 1 is provided. It is formed.
As shown in FIGS. The joint flange 21D is integrally formed. Bolt insertion tube portions 21E are integrally formed at a plurality of locations in the circumferential direction of both joint flanges 21D of each split joint body 21. A packing mounting groove 21F for mounting the saddle-shaped annular packing 23 is formed in the annular sealed joint region extending between the joint flange 21D of the double split joint body 21 and the holding end portion 21C of the double split pipe.
Then, as shown in FIGS. 1 and 2, when the double split joint body 21 is tightened with the second bolt 24 and the second nut 25, the joint flange 21D of the double split joint body 21 and the double split pipe holding end portion 21C are operated. The packing 23 mounted in the annular packing mounting groove 21F is compressed. Due to the compression of the packing 23, between the split joint surfaces of the two split joint bodies 21 and one of the split pipe holding ends 21C and the plug member of the two split joints 21 constituting one of the pipe holding portions 22 of the joint 20. The outer peripheral surface between the outer peripheral surface of 30 and the other split pipe holding end 21C of the two split joints 21 constituting the other pipe holding portion 22 of the joint 20 and the pipe end 1A of the fluid pipe 1. The space between them is sealed in a watertight state.

As shown in FIGS. 1, 5, and 6, the stopper member 30 has a lid plate 31B at one end of a cylindrical cylinder 31A that can be arranged through the pipe holding portion 22 of one of the joints 20 in a sealed state. Is provided with a bottomed tubular plug body 31 which is continuously provided by welding or the like, and is on the outer peripheral surface of the inner end portion of the tubular body 31A arranged in the first internal space 26 of the joint 20, and the tubular body 31A. Connecting protrusions 34 provided with insertion notches 33 for inserting the third bolt 41 of the fixed connecting portion 40 are provided at a plurality of locations (four locations in the embodiment) at predetermined intervals in the circumferential direction of the fixed connecting portion 40. It is integrally formed by welding or the like.
As shown in FIGS. 2 and 4, the arrangement pitch of the connecting protrusion 34 is twice the arrangement pitch of the first bolt 4 that fixedly connects the flange 2 of the fluid pipe 1 and the flange plate 3 in the present embodiment. Is set to. Therefore, when the plug member 30 is attached, the first bolt 4 and the third bolt 41, which are located every other one, are replaced in order.
Further, as shown in FIGS. 1 and 6, a plug mounting portion 36 in which the waterproof plug 35 is detachably mounted in a sealed state is formed in the central portion of the lid plate 31B of the plug main body 31.

As shown in FIGS. 1 and 4, the third bolt 41 of the fixed connecting portion 40 has a bolt insertion hole (not shown) formed in the flange 2 of the fluid pipe 1 and a bolt formed in the flange plate 3. It has a length that allows it to be inserted over an insertion hole (not shown) and an insertion notch 33 of the connecting protrusion 34 of the plug member 30. As shown in FIGS. 1, 2, and 4, the third bolt 41 includes a pair of lower holding nuts 42 for holding and fixing the flange 2 and the flange plate 3 of the fluid pipe 1 from both the upper and lower sides, and a plug member 30. A pair of upper holding nuts 43 for holding and fixing the connecting protrusions 34 from both the upper and lower sides are screwed together.
Therefore, in the above-mentioned fixed connecting portion 40, a set of screw fasteners 44 is configured by the third bolt 41, the lower holding nut 42, and the upper holding nut 43, and a plurality of sets of the screw fasteners 44 are shown in FIG. , As shown in FIG. 4, are arranged around the outside of the plug member 30 in the first internal space 26 of the joint 20. In this embodiment, four sets of screw fasteners 44 are arranged around the outer side of the stopper member 30 at equal intervals.
Further, as shown in FIGS. 1 and 4, the upper end portion of the third bolt 41 is a side wall portion 21B located on the upper side of the side wall portions 21B facing each other in the pipe axis direction in the two split joint bodies 21. It is configured so that it can come into contact with the inner surface 21G from above and below. The upper end portion of the third bolt 41 is configured as a load receiving portion 45 that receives the joint 20 at a predetermined exterior position.

Next, the work of leak-repairing the fluid leakage portion of the pipe end of the fluid pipe 1 by using the leakage repair tool A configured as described above will be described.
[1] Plug member mounting step First, a plug member mounting step is executed in which the plug member 30 of the leak repair tool A is fixedly connected to the pipe end side of the fluid pipe 1 by the fixed connecting portion 40. In this plug member mounting step, as shown in FIGS. 2 and 4, among the first bolt 4 and the first nut 5 that fix and connect the flange 2 and the flange plate 3 of the fluid pipe 1, in the pipe circumferential direction. The first bolt 4 and the first nut 5 located every other one are removed, and the third bolt 41 is attached to the removed portion with a pair of lower holding nuts 42. Next, as shown in FIG. 1, among the pipe holding portions 22 at both ends of the pipe shaft core of the joint 20 and above the third bolt 41, the pipe holding portions 22 are arranged above the pipe terminal of the fluid pipe 1. The connecting protrusion 34 of the plug member 30 is held and fixed from both the upper and lower sides by a pair of upper holding nuts 43 at the arrangement position of the pipe holding portion 22 on one side.
At this time, as shown in FIG. 1, a gap is formed between the lower end of the tubular body 31A of the plug member 30 and the upper surface of the flange plate 3 which is an example of the piping equipment M.

[2] Joint Mounting Process As shown in FIGS. 1 to 4, the double-split joint body 21 of the joint 20 is formed over the outer peripheral surface of the pipe end portion 1A of the fluid pipe 1 and the outer peripheral surface of the tubular body 31A of the plug member 30. The exterior is removed from the outside in the pipe radial direction, and the joint flange 21D of the two split joint bodies 21 is tightened with the second bolt 24 and the second nut 25. As a result, the packing 23 mounted in the annular packing mounting groove 21F extending between the joint flange 21D of the double split joint body 21 and the holding end portion 21C of the double split pipe is compressed. Due to the compression of the packing 23, as shown in FIGS. 1 and 2, one of the two split joint bodies 21 constituting the one pipe holding portion 22 of the joint 20 and between the split joint surfaces of the two split joint bodies 21. The other split pipe holding end of both split joints 21 forming between the split pipe holding end 21C and the outer peripheral surface of the tubular body 31A of the plug member 30 and the other pipe holding portion 22 of the joint 20. The space between 21C and the outer peripheral surface of the pipe end 1A of the fluid pipe 1 is hermetically sealed.
As shown in FIG. 1, the two pipe holding portions 22 of the exterior-fixed joint 20 hold the outer peripheral surface of the pipe end portion 1A of the fluid pipe 1 and the outer peripheral surface of the tubular body 31A of the plug member 30 in a sealed state. It can be held and the fluid leakage portion of the pipe end of the fluid pipe 1 can be covered in a sealed state.

Therefore, as the joint 20, one of the pipes of the joint 20 can be used as it is, which is a general-purpose water leakage repair metal fitting or a water leakage repair joint having a split structure having pipe holding portions 22 at both ends of the pipe shaft core. It is only necessary to manufacture the plug member 30 that closes the holding portion 22 in a sealed state. Therefore, the leak repair work for the fluid leak portion of the pipe end of the fluid pipe 1 can be carried out efficiently and at low cost.

Further, when both pipe holding portions 22 of the joint 20 are externally fixed at predetermined mounting positions with respect to the outer peripheral surface of the pipe end portion 1A of the fluid pipe 1 and the outer peripheral surface of the tubular body 31A of the plug member 30, both are divided. Of the side wall portions 21B facing each other in the pipe axis direction in the joint body 21, the inner surface 21G of the side wall portion 21B located on the upper side abuts on the load receiving portion 45 formed by the upper end portion of the third bolt 41. Therefore, while the load of the joint 20 is supported by the pipe end portion 1A of the fluid pipe 1 via the third bolt 41 of the fixed connecting portion 40, the two split joint bodies 21 of the joint 20 can be fixedly connected. It is possible to facilitate the mounting work of the 20 and prevent the mounted joint 20 from slipping off.

When both pipe holding portions 22 of the joint 20 are externally fixed at predetermined mounting positions with respect to the outer peripheral surface of the pipe end portion 1A of the fluid pipe 1 and the outer peripheral surface of the tubular body 31A of the plug member 30, both are divided. It may be carried out in a state where a gap is formed between the inner surface 21G of the side wall portion 21B on the upper side of the joint body 21 and the upper end portion of the third bolt 41.
Further, an elastic protective layer such as rubber may be formed on the load receiving portion 45 of the third bolt 41.

[Second Embodiment]
In the pipeline structure shown in FIG. 7, an air valve (rapid air valve) 11 which is an example of the piping equipment M is attached to the flange 2 at the upper end of the branching fluid pipe 1 extending upward from the fluid main 10. The flange 11B is fixedly connected to the flange 11B with a plurality of bolts and nuts (not shown) in a watertight state. When a fluid leak occurs in this pipeline structure, the leak repair structure and the leak repair tool A of the present invention described in the first embodiment described above are used. In the case of this second embodiment, the inner diameter of the tubular body 31A in the plug main body 31 of the plug member 30 is configured in the valve main body 11A of the air valve 11 to be larger than the outer diameter, and is inside the tubular body 31A of the plug main body 31. , A second internal space 32 is formed in which a part of the valve body 11A of the air valve 11 can enter.
By inserting the piping equipment M such as the air valve 11 provided at the pipe end of the fluid pipe 1 into the second internal space 32 of the plug member 30, the joint 20 can be used even if the total length in the pipe axis direction is small. This makes it possible to reduce the cost of leak repair work.

Further, when both pipe holding portions 22 of the joint 20 are externally fixed at predetermined mounting positions with respect to the outer peripheral surface of the pipe end portion 1A of the fluid pipe 1 and the outer peripheral surface of the tubular body 31A of the plug member 30, both are divided. Of the side wall portions 21B facing each other in the pipe axis direction in the joint body 21, the inner surface 21G of the side wall portion 21B located on the upper side can abut on the load receiving portion 45 formed by the upper end portion of the third bolt 41. It is configured in.

Further, when both pipe holding portions 22 of the joint 20 are externally fixed at predetermined mounting positions with respect to the outer peripheral surface of the pipe end portion 1A of the fluid pipe 1 and the outer peripheral surface of the tubular body 31A of the plug member 30, the plug main body A gap 12 is formed between the inner surface of the lid plate 31B of 31 and the upper surface of the valve body 11A of the air valve 11.
Since the other configurations are the same as the configurations described in the first embodiment, the same numbers as those in the first embodiment are added to the same configuration parts, and the description thereof will be omitted.

[Other Embodiments]
(1) In each of the above-described embodiments, a general-purpose water leakage repair metal fitting or a water leakage repair joint having the same inner diameter of both pipe holding portions 22 is used as the joint 20, but both pipe holding portions 22. It may be carried out by using a general-purpose water leakage repair metal fitting or a water leakage repair joint having a different inner diameter.

(2) In each of the above-described embodiments, as the joint 20, a water leakage repair metal fitting or a water leakage repair joint having a two-divided structure having both pipe holding portions 22 is used, but the water leakage repair having a divided structure divided into three or more. Metal fittings or water leakage repair joints may be used.

(3) In each of the above-described embodiments, as the joint 20, a water leakage repair metal fitting or a water leakage repair joint in which both pipe holding portions 22 are arranged in a straight line along the pipe axis direction is used, but the piping equipment M is used. When the pipes are arranged in an orientation orthogonal to the pipe axis, it is preferable to use a water leak repair metal fitting or a water leak repair joint for elbows in which both pipe holding portions 22 are orthogonal to each other.

(4) As the piping equipment M attached to the pipe terminal, the flange plate 3 is exemplified in the first embodiment described above, and the air valve 11 is exemplified in the second embodiment, but the other piping equipment M is a repair valve. And fire hydrants.

(5) In each of the above-described embodiments, the piping equipment M is flange-joined to the pipe end of the fluid pipe 1, but the present invention is not limited to this configuration. It may be attached to the end of the pipe 1.

(6) In each of the above-described embodiments, the fixed connecting portion 40 for fixing and connecting the plug member 30 to the pipe end side of the fluid pipe 1 is arranged in the first internal space 26 of the joint 20, but the configuration is limited to this. It's not a thing. For example, the fixed connecting portion 40 may be arranged outside the joint 20 for implementation.

1 Fluid pipe 3 Flange plate (plumbing equipment)
11 Air valve (plumbing equipment)
20 Fittings 21 Split fittings 22 Pipe holding part 26 1st internal space 30 Plug member 31 Plug body 32 2nd internal space 40 Fixed connecting part 45 Load receiving part M Piping equipment

Claims (7)

It is a leak repair structure that covers the fluid leak part of the tube end of the fluid pipe in a sealed state.
A joint provided with a plurality of split joints that can be externally fixed from the outside in the pipe radial direction while the fluid leakage portion is sealed with respect to the fluid pipe, and pipe holding portions at both ends of the pipe shaft core of the joint. of a plug member for closing the tube holding portions from the tube terminal one that is spaced outward of the pipe axis direction of the fluid pipe in a sealed condition, the tube terminal of said fluid conduit and said plug member A fixed connecting portion provided between the side and the plug member is fixedly connected to the pipe end side of the fluid pipe through the inside or the outside of the joint, and the plug member is one of the pipes. At the arrangement position of the holding portion, the fixed connecting portion is fixedly connected to the pipe end side of the fluid pipe, and the joint is exteriorized with the holding portions of both pipes abutted against the fluid pipe and the plug member. Fixed leak repair structure. The leak repair structure according to claim 1, wherein the fixed connecting portion is provided between the plug member and the pipe end side of the fluid pipe in the first internal space of the joint. The plug member includes a bottomed cylindrical plug body that can be arranged through the pipe holding portion of one of the joints in a sealed state, and the inner end portion of the plug body located in the joint has the plug body. The leak repair structure according to claim 2, wherein a connecting protrusion is provided for the fixed connecting portion. The leak repair structure according to any one of claims 1 to 3, wherein the fixed connecting portion is provided with a load receiving portion that receives the load of the joint. The leak repair structure according to any one of claims 1 to 4, wherein a second internal space is formed in the plug member so that a part of the piping equipment connected to the pipe end of the fluid pipe can enter. .. A leak repair tool that covers the fluid leak site of the fluid pipe end in a sealed state.
A joint provided with a plurality of split joints that can be externally fixed from the outside in the pipe radial direction while the fluid leakage portion is sealed with respect to the fluid pipe, and pipe holding portions at both ends of the pipe shaft core of the joint. Of these, a plug member that closes the pipe holding portion that is spaced apart from the pipe end of the fluid pipe to the outer side in the pipe axis direction in a sealed state, and the pipe end of the plug member and the fluid pipe. A fixed connecting portion provided between the side and at a position where the pipe holding portion is arranged, and a fixed connecting portion for fixing and connecting the plug member to the pipe end side of the fluid pipe through the inside or the outside of the joint. Leakage repair tool equipped with. The plug member includes a plug body in which a lid plate is continuously provided at one end of a cylinder that can be arranged through the pipe holding portion of one of the joints in a sealed state, and the pipe is located in the joint. The leak repair tool according to claim 6, wherein a connecting protrusion with respect to the fixed connecting portion is provided on the outer peripheral surface of the inner end portion of the body.

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