JPH0343516Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a repair cover used when dealing with water leakage accidents in water pipes.

(Prior art) In underground water pipelines, telescopic type expansion pipes are installed every 200 to 300 m to release stress caused by expansion and contraction due to temperature changes, but as time passes, the expansion pipes or joints become more susceptible to damage. A water leakage accident has occurred. For example, temporary measures such as tightening cotton gaskets, removing the L-flange of the joint and using a two-piece joint band, and welding a steel plate cylindrical cover to the leaking area are available. had been adopted.

(Problem that the invention aims to solve) Although measures to prevent water pipe leaks like this are easy and workable if the water is stopped once and the work is carried out, it is usually necessary to avoid inconvenience to users. Therefore, it is necessary to carry out the work while continuously passing water, which poses a problem in that the work is extremely difficult, especially in the case of repair procedures that require welding.

This idea was made to solve this problem. First, by sealing the leaking pipe and directing the leakage to one place, a repair cover was created to facilitate the main work by welding. With the goal.

(Means for solving the problem) The water leakage repair cover according to this invention has fasteners attached to both edges of a rectangular waterproof cover, and a latch that reinforces this part when the fastener is closed. Furthermore, a sealing edge is left on both sides to be wrapped around the tube and tightened using a band, and a space is provided in the center to form an annular bulging gap, and drainage is provided at the appropriate location. It is equipped with a plug.

(Function) In this device, the edges of the cover are closed with fasteners and latches, and the sealing edge of the cover is closely fixed to the outer circumference of the pipe, so leakage water is collected inside the cover and drained. Since it is guided to the plug, water does not scatter and makes it easy to weld the steel plate split cover.

(Example) The drawing shows an example of the repair cover according to this invention in a state in use. In the drawing, A shows a buried water pipe, and B shows a telescopic type telescopic pipe. A mortar lining layer C is formed on the inner circumference of the tube. By the way, 1 is a cover body made of waterproof material such as rubberized cloth,
It has a rectangular shape with a width corresponding to the length of the outer circumference of the target water pipe A and also corresponds to the telescopic type expansion pipe B, that is, the expansion joint part, and fasteners 2 are attached to both ends thereof. Either hooks 3 are provided at a plurality of locations close to the fastener 2, or connecting flanges 2' each having an L-shaped cross section are attached to both end edges, as shown in FIG.
These are constructed so that they can be connected with bolts. When the fastener 2 is closed, the latch 3 serves to reinforce this portion against the internal pressure of water leakage, protect the fastener 2, and firmly connect the cover body 1. Reference numeral 4 denotes sealing edges having a predetermined width formed over the entire length of both side edges of the cover main body 1, and a bulging space having a trapezoidal cross section, for example, is provided in a central portion 5 continuous to both sealing edges 4. The portion 5a is formed. This spacious area 5
When the cover main body 1 is wrapped and fixed around the water pipe A, a is a part that collects leakage water and guides it to the drain plug 6 provided at the appropriate place (lower part) in the central part 5 of the cover main body 1, and is completely A sealed annular bulging cavity is formed, but its shape is not specified depending on conditions such as the constituent material of the cover body 1. In the figure, 7 is a rope that determines the wrapping position of the cover main body 1 around the water pipe A and temporarily fastens it, and 8 is a metal band that tightens the sealing edge 4. A fastening fitting 9 is provided. Note that a suitable packing material 8a is wrapped between the sealing edge 4 and the surface of the water pipe A, if necessary.

This invention has a structure as described above in the embodiment, and when setting this water leak repair cover to the leaking point of the water pipe A, the cover body 1 is wrapped around it, and the latch 3 is first attached. , the rope 7 is tied around the edge of the sealing edge 4 to determine the position of the cover body 1. Subsequently, the fastener 2 is closed, the band 8 is placed over the sealing edge 4, and the tightening fitting 9 is operated to tighten it. Here, while joining the divided steel plate cover 10 to the outer periphery of the water pipe A, the drain plug 6 provided on the cover body 1 is inserted into the drain port 11 provided on one steel plate cover 10, and the hose is further connected. to drain the leakage water, then tighten the connecting fittings 12 and remove the steel plate cover 1.
After completely fixing 0, this cover 10 and water pipe A
Weld the contact parts. When welding is completed, the drain hose is removed, and the drain plug 6 and drain port 11 are closed to shut off water. As shown by the imaginary lines in FIG. 2, consideration may be given to providing a cover 13 for connecting the edges with a fastener or the like, thereby protecting the joint between the fastener 2 and the sealing fitting 3. good. Further, although the steel plate cover 10 shown in the figure has a structure in which it is divided into upper and lower halves, it may be divided into three halves connected at three points around the circumference.

(Effect of the invention) As explained above, this invention is a cover that has a space for forming an annular gap in the center, has sealing edges on both sides, and has fasteners and latches on the edges. The leakage part is temporarily blocked using a plug, and the leakage water is discharged through the plug, making it easy to weld the steel plate cover, and ensuring that repairs can be made while water continues to flow. It can be done efficiently.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a partially cutaway front view with the repair cover installed, Figure 2 is a cross-sectional view of Figure 1, and Figure 3 A and B show connecting flanges on both ends of the repair cover. Another example is shown in which A is a front view and B is a sectional view. 1 is a cover body, 2 is a fastener, 3 is a latch, 4 is a sealing edge, 5 is a center part, 5a is a clearance part, 6 is a drain plug, and 8 is a metal band.

Claims (1)

[Scope of utility model registration request] It is a rectangular cover made of waterproof material,
Fasteners are arranged on both edges so that they can be connected to each other, and sealing edges are left on both edges to be fastened to the tube using a band, and in the center continuous with the sealing edges, A cover for repairing water leakage of a pipe, characterized in that a space is provided to form a sealed annular bulging gap that collects leakage water and guides it to a drain plug provided at an appropriate position on the cover.