CN215215314U - Hufu joint of retaining wall - Google Patents

Abstract

The utility model provides a dado haff section, two haff section halfs enclose to close and constitute haff formula tube coupling, the straight recess that axial side and tip circumference of haff section halfs were arranged, the arc recess is used for imbedding the sealing member halfs, the straight 11 outsides of recess of two haff section halfs are provided with interior dado and the outer dado of mutual interlock, the wall perpendicular to of interior dado and outer dado haff section halfs is connected the face and the terminal surface, the root outside of interior dado is provided with the first fulcrum step as outer dado top fulcrum. In the scheme, the first supporting point step has two functions, one is to increase the rigidity of the straight groove, and the other is to limit the enclosing degree of the two half-huff sections or limit the deformation of the two half-huff sections.

Description

Hufu joint of retaining wall

Technical Field

The utility model relates to a pipeline is salvageed equipment technical field, especially is used for carrying out the dado hafu section of salvageing fast to leaking or damaged pipeline.

Background

The town water supply and drainage pipe network system usually adopts cement, cast iron or galvanized steel pipe, because geological conditions changes or body self defect, the pipeline rupture accident happens occasionally, for in time recovering the pipeline unobstructed, often adopt the quick connector of half a pipe-shaped section among the prior art to connect, adopt two half tubular half formula quick connectors when salvageing promptly, contain the damaged portion C of pipeline A, B in the pipe cavity is enclosed into to half a pipe-shaped section, utilize the bolt to tighten up the semicircle composition surface of half a pipe-shaped section 1, rubber seal 2 folds and seals damaged portion C.

After the repair of a common half joint is finished, the axial sealing gasket between the upper shell and the lower shell is compressed, but a certain gap is reserved between flanges of the upper shell and the lower shell, so that the side face of the axial sealing gasket is exposed outwards from the gap, the axial sealing gasket is easy to accelerate aging, and the risk of failure exists after the axial sealing gasket is used for a long time. In addition, in order to ensure the sealing performance of the joint of the upper shell and the lower shell, the fastening bolt can apply larger pressure to the sealing gasket, and the sealing gasket in the axial groove can be extruded out of the sealing groove or burst due to overlarge pressure.

To solve the above technical problem, chinese patent CN106439374A discloses a pipeline repairing device, which has the following scheme as shown in fig. 1: a raised protective wall is arranged on the outer side of the axial sealing groove of the upper shell or the lower shell of the half joint, and the protective wall seals a gap between flanges of the upper shell and the lower shell from the outer side in a mutually butted state. When the internal pressure of the half joint is too high, the half joint is deformed to a certain extent, as shown in fig. 2 and 3, which are a comparison between the deformation of the reference documents, it can be seen that once the half joint is deformed by swelling, the upper protection wall is attached to the side edge of the lower protection wall and serves as a supporting point for preventing further deformation, however, the supporting area is too small, and the deformation of the supporting area can also extrude the sealing gasket to deform easily. And it does not set up the dado structure of circumference sealing washer, and the same risk that has the extrusion fracture of circumference sealing washer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dado ha fujie can effectively prevent to extrude the fracture because of the sealing washer that the deformation of hough festival caused.

The two half-bodies of the Huff joint are enclosed to form a Huff type pipe joint, straight grooves and arc-shaped grooves are circumferentially arranged at the axial side edges and the end parts of the half-bodies of the Huff joint and are used for embedding sealing part half-bodies, inner protecting walls and outer protecting walls which are mutually meshed are arranged outside the straight grooves 11 of the two half-bodies of the Huff joint, the wall surfaces of the inner protecting walls and the outer protecting walls are perpendicular to the connecting surface and the end surface of the half-bodies of the Huff joint, and first supporting step serving as the top end supporting point of the outer protecting walls is arranged outside the root part of the inner protecting walls.

In the scheme, the first supporting point step has two functions, one is to increase the rigidity of the straight groove, and the other is to limit the enclosing degree of the two half-huff sections or limit the deformation of the two half-huff sections.

Description of the drawings:

FIG. 1 is a schematic view of a prior art structure;

FIGS. 2 and 3 are schematic diagrams of the prior art before and after deformation;

fig. 4 is a schematic perspective view of the present invention;

FIG. 5 is a schematic view of half of a half-bridge;

fig. 6 is a cross-sectional view of the present invention;

fig. 7 is a schematic end view of the present invention.

The specific implementation mode is as follows:

a half-half-half.

In the above scheme, the first supporting point step 15 has two functions, one is to increase the rigidity of the straight groove 11, and the other is to limit the enclosing degree of the two half-huf-joint bodies 10 or limit the deformation of the two half-huf-joint bodies 10, when the half-huf-joint is subjected to outward expansion deformation, the top end of the outer protective wall 14 is abutted against the outer wall surfaces of the first supporting point step 15 and the inner protective wall 13, and the two functions simultaneously prevent the half-huf-joint from further deforming to extrude the sealing gasket to cause extrusion deformation of the sealing gasket.

An arc-shaped end face protection wall 17 is arranged on the outer side of the arc-shaped groove 12 of the half 10 half 12 half full. The end face protection walls 17 are arranged so that when the half joint expands outwards to generate arch deformation, the end face protection walls 17 at two ends can effectively abut against a pipeline to form a fulcrum, the pipeline further bears pressure instead of a sealing gasket, and the sealing gasket is prevented from being extruded and deformed due to the fact that the sealing gasket is further deformed and extruded by the half joint.

A second fulcrum step 16 serving as a fulcrum of the tip of the inner retaining wall 13 is provided inside the root of the outer retaining wall 14. When the Haff joint is expanded and deformed, the top end of the inner protecting wall 13 is abutted against the second fulcrum step 16, so that the situation that the Haff joint is further deformed to extrude the sealing gasket to cause the extrusion deformation of the sealing gasket is prevented.

The inner retaining wall 13 is arranged continuously along the outer groove wall of the straight groove 11. The inner protective wall 13 in the above solution is essentially the outer groove wall of the straight groove 11.

The outer retaining wall 14 is spaced from the connecting bolts along the axial direction of the half joint. Avoid interfering with the installation position of connecting bolt.

The retaining walls on the same side of the half-half-half 10 are staggered in the axial direction in the manner of outer retaining wall 14-outer retaining wall 14 on the other half-half. Thus, the two half-half-sections 10 can be uniformly pressed against each other when deformed.

An even number of outer protecting walls 14 on the same side of the half body 10 are arranged. Thus, the two half-half-halves 10 can be manufactured by using the same die, and the half-halves 10 can be fastened only by changing the directions of the half-halves 10.

Two outer retaining walls 14 in the same axial position are respectively placed on the two half-half huff-sections 10.

Claims (8)

1. The utility model provides a dado half-body (10) enclose to close and constitute half-type tube coupling, and the axial side of half-body (10) of half-body and straight recess (11), arc recess (12) that tip circumference was arranged are used for imbedding sealing member halfbody, its characterized in that: the outer sides of the straight grooves (11) of the two half halves (10) are provided with an inner protective wall (13) and an outer protective wall (14) which are mutually meshed, the wall surfaces of the inner protective wall (13) and the outer protective wall (14) are perpendicular to the connecting surface and the end surface of the half shells (10) are provided with the outer sides, and the outer half shell half.

2. A retaining wall huff section according to claim 1, characterized in that: an arc-shaped end face protection wall (17) is arranged on the outer side of an arc-shaped groove (12) of the half full.

3. A retaining wall huff section according to claim 1 or 2, characterized in that: and a second fulcrum step (16) serving as a top fulcrum of the inner protective wall (13) is arranged on the inner side of the root part of the outer protective wall (14).

4. A retaining wall huff section according to claim 1, characterized in that: the inner retaining wall (13) is continuously arranged along the outer groove wall of the straight groove (11).

5. A retaining wall huff section according to claim 1, characterized in that: the outer protecting wall (14) is axially arranged along the half joint in a mode of avoiding the connecting bolt at intervals.

6. A retaining wall huff section according to claim 1, characterized in that: the retaining walls on the same side of the half (10) half (half (half (14 half outside half.

7. The retaining wall huff section of claim 6, wherein: an even number of outer protective walls (14) on the same side of the half.

8. The retaining wall huff section of claim 6, wherein: two outer protective walls (14) at the same axial position are respectively arranged on the two half-half-bodies (10).

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