JPH01275995A - Repairing mechanism for bending part in conduit line - Google Patents

Abstract

PURPOSE:To achieve a repair purpose simply and speedily as doing operation by installing a packing material in a split type sector housing, while attaching the divided ring engaged member to the housing. CONSTITUTION:There is provided with split type sector housings 1, 1 being covered to the outside as lying astride a straight pipe conduit line body 10 and a bent pipe 11, and each clamping means 2 is installed between split end faces of these sector housings 1, 1, while ring engaged members 3 are set up at both ends, and furthermore packing 5 with a bore 6 is installed in a packing storage space 4 formed between clamping means 2 and 2. Each ring engaged member 3, having each engaged claw 13 being engaged with a pipe body outer surface at both ends, is one that has attached such one manufactured as halves to each housing, and it is clamped and engaged to an outer surface of the pipe body 10 or the bent pipe 11 by clamping these clamping means 2.

Description

Detailed Description of the Invention ``Object of the Invention'' The present invention relates to a repair mechanism for bent portions of pipes, and is capable of repairing water leaks and other failures occurring at bent portions of pipes under conditions of continued use of the pipes. The aim is to obtain a mechanism that can be easily repaired.

(Industrial field of use) A mechanism for repairing leaks at bent pipes in conduits.

(Prior Art) Bent pipes called elbows are often used in piping lines used for water supply and other purposes. That is, such a bent portion is formed by connecting the above-mentioned mortar tubes by welding.

However, when a crack or the like occurs in the welded part of such a bent pipe part, the outside of the part is wrapped with tape, etc. In other words, by wrapping the tape at least partially by laminating and polymerizing it. This is to repair damaged areas such as cracks.

(Problems to be Solved by the Invention) The above-mentioned bent pipe portion forms the corner of the pipe, so it easily comes into contact with other objects, and is also a part that is strongly influenced by the flow pressure of the fluid inside the pipe. This often causes cracks and other damage, particularly at welded joints, but no suitable means have yet been developed to prevent or repair such damage to bent pipe sections.

Therefore, even if it is wrapped with tape as described above, the number of steps required is large and the finished appearance is not desirable. Particularly in the inner part of the bending radius, the wrapping becomes extremely dense and unsightly, and in the outer part of the bending radius, it becomes a scab, which tends to be insufficient to prevent leakage, and the purpose of repair may not be achieved. many.

Of course, it is conceivable to remove the bent pipe section from the pipeline system, install a new bent pipe, and weld it, but in this case, the amount of work involved would be large, and the work would take a long time from start to finish. During completion, it is necessary to completely stop the flow of fluid in the pipeline, and in cases where the pipeline is a line that supplies water or other supplies to a large number of residences, workshops, etc. However, while the flow of such fluid is completely stopped, life or work that utilizes the fluid must be interrupted. In other words, the number of man-hours is large,
Moreover, it is often practically difficult to adopt such construction because the impact of interruption of work and daily life is extremely large.

"Structure of the Invention" (Means for Solving the Problems) Consisting of two fan-shaped housing parts and a tightening means for tightening the housing parts, the fan-shaped housing parts are each divided into two ends in the tube axis direction. A pipe characterized in that a ring-shaped locking member is attached thereto, a band-shaped packing material having an inner cavity is housed between the ring-shaped locking members, and the ends of the band-shaped packing material are joined and sealed. Repair mechanism for bends in roads.

(Function) The two fan-shaped housing members cover at least the area of the pipe bend that requires repair.

By attaching divided ring-shaped locking members to both ends of the fan-shaped housing body in the axial direction of the pipe as described above, and tightening the fan-shaped housings with a tightening means, this also works as a bent part of the pipe line. This ensures stable and accurate attachment.

The above-described attachment (or removal) of the fan-shaped housing body to the bent portion of the pipe can be easily and quickly carried out from the outside while fluid continues to flow within the pipe.

By accommodating the band-shaped packing material having the inner cavity between the ring-shaped locking members in the housing body mounted in the above-described manner, the portion of the conduit bent portion that requires repair can be appropriately covered. Also, the packing material having such a lumen provides little resistance to the tightening of the sector-shaped housing body as described above.

Moreover, the pressure of the internal fluid leaked from the conduit acts on the inner lumen, so that a sealing action corresponding to the fluid pressure is achieved, that is, an appropriate seal is formed even though leakage remains. The band-shaped packing is cut slightly longer than the circumferential surface of the tube and is attached and tightened to the outer surface of the tube to form an effective seal between the joint end surfaces.

(Example) To explain the specific embodiment of the present invention as described above as shown in the attached drawings, the bent pipe 11 between the straight pipe conduit body 10 and 10 is connected to the existing pipe 11 by the welded part 12. As is well known, in order to repair such a bent pipe, it is necessary to straddle the straight pipe body 10 and the bent pipe 11 and extend it outward. a split sector housing 1.1 for enclosing;
A clamping means 2 is provided between the divided end faces of these sector-shaped housings 1.1.
and a ring-shaped locking member 3 is provided at both ends,
Furthermore, a banking 5 having a bore 6 is provided in the packing receiving portion 4 formed between the tightening means 2.2.

The ring-shaped locking member 3 described above is made of steel and has locking claws 13 at both ends that lock onto the outer surface of the tube, and is manufactured in two pieces and attached to each housing with adhesive. By tightening the tightening means 2, the tube body 10 or 11 is tightly secured to the outer surface thereof.

The banking 5 has the above-mentioned inner cavity 6, and has lip parts 7 formed on both sides of the inner cavity 6, and is formed into a belt shape. A slightly longer cut piece is set around the welded part 12, and adhesive is applied between the cut ends to form an integral ring shape. The length longer than the circumference is pressed against the tube body to stabilize the joint between the cut ends and form an effective seal.

1.2 shows a structure in which the repair mechanism according to the present invention is separately applied to each welded part 12 at both ends of a bent pipe 11. Therefore, the one on the left in FIG. 1 shows the external appearance. Although only the cloth side is shown in cross section, in the present invention, each welded portion 12 on both sides of the bent pipe 11 is appropriately covered as shown in Fig. 3.4. It can be implemented as a one-piece housing. That is, in the case of Fig. 1.2, the housing 1 is a fan-shaped housing of about 2O2, whereas in the case of Fig. 3.4, the large housing 1 is approximately 90°.
, l, and the above-mentioned packing accommodating portion 4 and packing 5 are provided at both ends of such housings 1 and l, respectively, and another rubber spacer 8 is interposed in the middle part, The intervening portion of the rubber spacer 8 is also provided with a tightening means 2a. The other structural relationships are the same as those shown in Fig. 1.2 above, and the rubber spacer 8 is divided into two pieces in the same way as the ring-shaped locking member 3 mentioned above, and is attached to each housing 1 with adhesive. It is something that

By employing hardened alloy steel as the ring-shaped locking member 3, it is possible to effectively lock and fasten the tube body 1o or bent pipe 11 made of general mild steel or the like by tightening with the tightening means 2. This has been experimentally confirmed. Therefore, the mechanism of the present invention can be set on the pipe simply by tightening with the tightening means 2, and the sealing relationship can be completed.

Further, according to the present invention, as shown in FIG. 5, the dividing line of the housing 1.1, which is divided into two parts, can be formed along the curved line of the tube axis.

In other words, if the dividing line of the housing is formed along such a curved line of the tube axis, the housing will be formed by the inner part 1a and the outer part 1b of the radius of curvature. It is clear that the relationships of the present invention as described above can be sufficiently established. Since the tightening means is located on the side surface of the bent pipe 11 and does not protrude outward, the degree of contact with other objects can be reduced in specific field conditions.

One of the requirements of the present invention is to use a band-shaped packing instead of a conventional ring-shaped banking 5, and the band-shaped packing can be easily manufactured by extrusion molding or the like. , and there is no need to use a special mold to form the packing.Moreover, by attaching and tightening such a band-shaped puffing that is slightly longer than the circumference, an effective seal can be created between the ends of the band-shaped packing. is obtained. Depending on the case, the number of band-shaped bankings is the same as the number of divisions of the housing (two), and they are attached to the housing by adhesive or fastening means.

``Effects of the Invention'' According to the present invention as explained above, the sector-shaped housing is adopted as a split type, and the pipe is fixed by installing a packing material inside the TS-shaped housing and attaching a split ring-shaped locking member. It is possible to easily and effectively cover and lock the bent part of the pipe, that is, it can easily and quickly accomplish the purpose of repair under operating conditions where liquid or other fluids are flowing in the pipe, and it also has an aesthetically pleasing appearance. This invention is industrially very effective because it allows good settings to be made.

[Brief explanation of the drawing]

The drawings show the technical contents of the present invention, and FIG. 1 is a partially cutaway side view showing one application state of the present invention, FIG. 2 is a partially cutaway front view thereof, and FIG. 3 is a partially cutaway side view showing one application state of the present invention. FIG. 4 is a partially cutaway side view similar to FIG. 1 of another embodiment of the invention; FIG. 4 is a partially cutaway front view similar to FIG. 2;
FIG. 5 is a partially cutaway side view similar to FIGS. 1 or 3 of yet another embodiment of the present invention. 1 and la. 1b is a split type fan-shaped housing, 2 is a tightening means, 3 is a ring-shaped locking member, 4 is a packing housing part, 5 is a packing, 6 is a lumen, 10 is a straight pipe conduit body, 11 is a bent pipe, 12
13 indicates a welded portion, and 13 indicates a locking claw.

Claims (1)

[Claims] Consisting of two fan-shaped housing parts and a tightening means for tightening the housing parts together, split ring-shaped locking members are attached to both ends of the fan-shaped housing part in the tube axis direction, and the ring-shaped 1. A repair mechanism for a bent portion in a conduit, characterized in that a band-shaped packing material having a lumen is accommodated between locking members, and ends of the band-shaped packing material are joined and sealed.