JPS60220290A - Leakproof device for fluid pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a leakage prevention device for fluid pipes, which is used to prevent leakage of pressure fluid while reinforcing damaged parts of fluid pipes such as water pipes.

This Yuzu fluid pipe has traditionally been the first ship stopper device.
81C7'y〒As shown in Fig. 16, the first number of arc-shaped shells (4) are fixed to each other in a cylindrical shape from the circumferential direction at the outer peripheral part IC of the fluid pipe 0) and can be disconnected from each other at will. And, four parts (41), (4a) along the local direction and stepped parts (4b), (4b) along the tube axis direction are continuously formed on the inner edge of this arcuate shell (4). There is one that is equipped with a loop-shaped elastic gasket (6) that is fitted and held by the user.

Looking at fluid leakage prevention work using such a conventional device, a pre-assembled arc-shaped shell (4) is connected to the fluid pipe (1) temporarily or permanently in a V-sheath state.

When the final arcuate shell body (4) is fixedly connected to (4), the pressure fluid leaking from the broken point ta) of the fluid pipe (1) will leak between the connecting parts of the adjacent arcuate shell bodies +41 and +41. The liquid flows out with an unusual force between the arcuate shell (4) and the outer fr'i1 surface of the fluid pipe. At this time, the packing part (5+1) along the tube axis direction F of the packing (6),
(5a) is a large fluid FE i that receives its inner surface e
As a result, the center fil (of the arcuate shell (4), which is located outside the stepped portions (4b), (4b), and the gasket portions (5a), (5a) is likely to be deformed and protrude greatly outward in the radial direction. .

Therefore, in this state, the arcuate shell (4'+, t4
1. If the two pieces are fixedly connected, the leakage prevention will not be effective, so the seal part ('') of the seal (5), (5a)
The step part of the arcuate shell (4) resists the large fluid F1:
4b), (4b) had to be fixedly connected while being pushed in to prevent leakage, which required a great deal of effort and time.

The present invention has an object to overcome the above-mentioned conventional problems so as to be advantageous in terms of manufacturing and cost.

A characteristic configuration d1 of the # leakage prevention device for a fluid pipe according to the present invention, which is taken to achieve the above object, is a plurality of cylindrical pipes fixedly connected to each other from the circumferential direction at the outer peripheral part of the fluid pipe fil, and which can be quickly connected and released. An arcuate shell (4), a recess (4a) in the circumferential direction that communicates with the inner circumferential edge of the arcuate shell (4), and a step in the tube axis direction. (4b), a loop-shaped elastic gasket (5) that is fitted and held over (4b);
) By contacting at least the center of the inner surface of the peripheral edge portion along the tube axis direction or near the center, the packing portions (5a) and (5m) of the seal (6) along the tube axis direction are moved outward in the radial direction. There is a strip-shaped body (61 attached) capable of regulating elastic displacement.

In other words, a plurality of arcuate shells (4) with gaskets (6) are fixedly connected at the outer periphery Vζ of the damaged part of the fluid pipe (1) to prevent fluid leakage from the damaged part of the fluid pipe (1). When preventing this, the packing part (5) along the tube axis direction (
Even if a large fluid pressure acts radially outward on the inner surface of the arc-shaped shell (4), the inner surface of the peripheral edge of the arc-shaped shell (4) and the band-shaped member (6) will not come into contact with each other. Due to the presser action,
The elastic displacement of the packing portions (5g) and (5J) in the radial direction outward can be well suppressed by VC.

Therefore, the packing part (5a
), (5a) can be made unnecessary or minimized, so leakage prevention work for the fluid pipe fi+ can be carried out quickly with less effort than in the past.
Moreover, since it is possible to lower the A11* self-barrel (6) by simply attaching the band-shaped body (6) as described above, for example, the above-mentioned packing parts (5a), (5a) are attached to the core metal along the tube axis direction. Compared to the case of burying a hole, the above-mentioned effects can be achieved while making manufacturing easier and lowering the cost.

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 to 5, to configure a leakage prevention device for a water pipe (1), which is an example of a fluid pipe, bolts and nuts (21, f
3), 31 arc-shaped shells (4) (4) that can be fixedly connected and disconnected in a cylindrical shape through
), a recess (4a) extending in the circumferential direction and communicating with the inner surface of the tube (4a), and a stepped portion (4a) extending in the tube axis direction
b), (4b)
), (5a) and a pair of packing parts along the circumferential direction (5
b), (5b), the radial direction of the packing portions (5a), (5m) in the tube axis direction of the packing (5) is caused by contact with the inner peripheral edge portion of the arcuate shell (4). A rubber band-like body (6) that can regulate outward elastic displacement is integrally molded.

The arcuate shell (4) has connection flanges (4c) that protrude radially outward at both ends in the circumferential direction.

(4c), and the cross-sectional shape when viewed from the circumference is approximately in the shape of a square square, with the center portion in the tube axis direction protruding outward in the radial direction.

Then, on the outer periphery of the water pipe (1), three gaskets (5) and 1-inch arc-shaped shells (4) are fixedly connected to prevent water leakage from the damaged part (+1) of the water pipe (1). When preventing the pipe/axial packing part (5a) of the packing (5)
.

Even if a large water pressure acts on the inner surface of the shell (5a) in the radial direction, the pressure due to the contact between the inner surface of the circumferential portion of the arc-shaped shell (4) and the strip (6) Due to the synergistic effect of this action and the mutual pulling action radially inward, the elastic displacement of the packing parts (5a), (5a) in the radial outward direction can be well controlled.
), (F+a) is not required to be pushed against a large pressure fluid VC, and work on leakage of tap water can be done quickly with less effort.
! p (it can be done.

In addition, as shown in FIG. 8, in a natural state, that is, in a state where no moisture is acting on the rubber packing (6), the band-shaped body (6) and the inner surface of the arc-shaped shell (4) (between) ffl (If S+ is formed,
Due to the elastic deformation of the strip (6) toward the inner surface of the arcuate shell (4) during the action of water pressure, the il<・sokin part (5a), (
This makes it possible to more effectively suppress the elastic displacement of F+a) in the radial direction outward.

Furthermore, as mentioned above, if the belt-shaped body (6) is provided with the entire area of the rubber packing part (5m), (5@), (5b), (5b), the arc-shaped shell body Since it is possible to prevent water from entering the gap (sl) between the shell (4) and the strip (6), rusting on the inner surface of the arc-shaped shell (4) can be well suppressed. It can be done.

Next, another example e will be listed.

(b) Bowl 16 As shown in figure, the packing parts (51), (5m), (5b), (5m) of the rubber packing (6)
Reinforcing lips (6a) are provided continuously on the inner surface of the band-shaped body (6) which is integrally molded over the entire area of b).

(b) @As shown in Figures 7 and 8, the strip (6
) The pair of packing parts (5a) and (5m) of the packing (5) are integrally molded at the center of the packing (5) along the tube axis direction.

(c) As shown in FIG. 9, the band-shaped body (6) is placed in the center and circumferential direction of the pair of packing parts (5@) and (5a) along the tube axis direction of the packing (5). The pair of packing parts (5b), (5b) are integrally molded in a cross shape over the central part thereof.

) As shown in FIG. 10, on the band +611,
The pair of packing parts (5g) and (5a) along the tube axis direction of the packing (5) and a part of the circumferential packing parts (5b) and (513) that are continuous therewith are integrally molded.

(As shown in Figures 11 and 12, the band-shaped part of the packing (5) described in II is added to the center of the pair of packing parts (5a), (5a) in the tube axis direction. The body (6) is made from a different material from the packing (5), such as cloth or a leaf spring.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the fluid pipe leakage prevention device according to the present invention, FIG. 1 is a front view, FIG. 2 is a sectional view taken along the line 11 in FIG. 1, and FIG. Sectional view taken along the line B-1 in Figure 2, No. 4
FIG. V31 is a perspective view of the packing, and FIG. 5 is a sectional view taken along line ΩV in FIG. Figures 6, @7, and Figures 9 to 11 are cross-sectional views and perspective views of different embodiments, respectively, and Figure 8 is Figure 7 o1-v.
M#lA sectional view, Figure 12 is the ■-XI & 11 in Figure 11.
FIG. Figures 18 to 16 show honor leakage 1 [
17 shows the device, FIG. 18 is a perspective view of the bag, FIG. 14 is a sectional view taken along the line III'-XIY in FIG. 18, and FIG.
FIG. 16 is a cross-sectional view. flll...? 11ε body tube, (4)...
Arc-shaped membrane body, (4a)...Four parts, (4b)...
...Stepped portion, (6) ...Elastic packing, (5
a)...Putskin part, (6)...Band-shaped body. Agent Patent Attorney Osamu Kitamura 538-

Claims (1)

[Scope of Claims] ■ A plurality of arcuate shells (4) that can be fixedly connected to and disconnected from each other from the circumferential direction at the outer periphery of the fluid pipe fi+ (7); an inner surface of the arcuate shell (4); Side periphery VC
Concave portions (4a) and (4
a) and a loop-shaped elastic packing (6) fitted and held by stepped portions (4b), (4b) along the pipe axis direction, the packing (6)
By contacting the inner surface of the arcuate shell (4) at least at the center of the peripheral edge portion along the tube axis direction or near the center;
The packing part (5a) of the packing (5) along the tube axis direction
), (5@) is equipped with a band-shaped body (6) capable of regulating outward elastic displacement in the radial direction. (1) The band-shaped body (61) is added to the central part of the other pair of packing parts (5a), (5a) in the tube axis direction of the packing (6), i-i.
A fluid pipe leakage prevention device according to claim 0. [The band-shaped body (6) is a pair of packing parts (5a) of the packing (5) along the tube axis direction, a central part of (5a) and a pair of packing parts (5b) along the circumferential direction,
The fluid pipe leakage device according to claim 0, which is added to the central portion of (5b) in a substantially cross shape. ■ The band-shaped body (61 is 1) No. 11 packing (5),
A pair of packing parts (5a), (5m) along the tube axis direction
and a pair of packing parts (5b), (6
Device for leakage of fluid pipes 1 as claimed in claim 0, characterized in that it is provided with a full range b). (Li) The belt-shaped body (6) is integrally molded with the packing (6).
A fluid pipe leakage device as described above. ■ Any one of Claims (T') to 0, wherein the band-shaped body (6) is constructed separately from the packing (6) described in 1jJ. Device.