CN206036459U - Diameter -variable ha fujie casing - Google Patents

Abstract

The utility model belongs to the technical field of pipeline installation, and in particular relates to a variable-diameter half-annular shell, which comprises two half-annular shells, and the two half-annular shells are engaged to form a tubular shell. One end has a larger diameter than the other, allowing it to be clamped at the junction of two reducing pipes. The diameters of the two ends of the half joint of the utility model are individually designed according to the diameter change of the pipeline to form a variable-diameter half-joint shell, which can be used to block the variable-diameter pipeline to meet the needs of actual working conditions.

Description

A variable diameter half joint shell

technical field

The utility model belongs to the technical field of pipeline installation, in particular to a variable-diameter half joint housing.

Background technique

The Huff joint is mainly used in the fields of pipeline repair or pipeline connection. Its structure mainly includes two half shells, and the two half shells can be buckled together to form a sleeve, which is clamped on the pipeline. However, the half joints in the prior art are often of equal-diameter structure, and it is difficult to say that the pipeline is completely sealed when faced with some complicated working conditions. For example, at the joint of two pipes with different diameters, the traditional equal-diameter half joint cannot closely fit the two pipes at the same time, so a new half joint structure is urgently needed to meet the requirements of this working condition.

Utility model content

The purpose of the utility model is to provide a variable-diameter half joint housing capable of sealing the variable-diameter pipeline.

In order to achieve the above purpose, the utility model provides the following technical solutions: a variable-diameter half-annular shell, including two semi-annular shells, the two half-annular shells are engaged to form a tubular shell, and the tubular shell The diameter of one end of the body is larger than that of the other end, so that it can be clamped at the junction of two pipes of different diameters.

The semi-annular shell has a groove-like structure. When the two half-annular shells are engaged, both ends of the tubular shell are closed, and the middle section of the tubular shell is arched outward along the radial direction of the pipeline.

Two arc-shaped grooves are arranged on the inside of the arc-shaped sides at both ends of the semi-annular shell; two arc-shaped grooves are arranged on the arc-shaped edges on both sides of the semi-annular shell; the two arched grooves and the two The curved bar grooves are connected in sequence.

The arched edges on both sides of the semi-annular shell are provided with flanges protruding outward, and the two half-annular shells are connected by bolts through bolt mounting holes provided on the flanges.

The arched bar groove is arranged on the end surface of the flange side.

A positioning groove is arranged on the groove bottom of the arched bar groove.

The technical effect of the utility model is that: the diameters of the two ends of the half joint of the utility model are individually designed according to the diameter change of the pipeline to form a variable-diameter half-joint shell, which can be used to block the variable-diameter pipeline to adapt to the actual working conditions.

Description of drawings

Fig. 1 is the assembly drawing of the present utility model;

Fig. 2 is a perspective view of the assembly of the semi-annular shell and the gasket of the present invention;

Fig. 3 is a perspective view of a semi-annular housing of the present utility model;

Fig. 4 is a perspective view of the gasket.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in detail.

In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings (that is, the side that cooperates with the pipeline is the inner side, The side away from the pipe is the outer side) is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, configuration and operation, so it should not be construed as a limitation of the utility model.

As shown in Figure 1, a variable-diameter Huff joint housing includes two semi-annular housings 10, and the two half-annular housings 10 are engaged to form a tubular housing, and the diameter of one end of the tubular housing is greater than the diameter of the other end, so that it can be clamped at the junction of two different-diameter pipes 30; A gasket 20 is provided. The diameters of the two ends of the half joint of the utility model are individually designed according to the diameter change of the pipeline 30 to form a variable-diameter half-joint shell, which can be used to block the variable-diameter pipeline 30 to meet the actual working conditions.

Preferably, as shown in Figures 2 and 3, the semi-annular shell 10 is a groove-shaped structure. When the two half-annular shells 10 are engaged, the two ends of the tubular shell are closed, and the middle section of the tubular shell is along the The duct 30 arches radially outwards.

Preferably, as shown in Figure 3, two arc-shaped grooves 13 are provided on the inside of the arc-shaped sides at both ends of the semi-annular shell 10; The groove 14 ; the two arch grooves 14 and the two arc grooves 13 communicate in sequence to form a closed annular groove for accommodating the gasket 20 .

Preferably, the arched sides on both sides of the semi-annular housing 10 are provided with flanges 11 protruding outwards, and the two half-annular housings 10 pass through the bolt mounting holes provided on the flanges 11. Bolt 12 connections.

Preferably, the arched groove 14 is arranged on the end surface of the flange 11 .

Preferably, as shown in Figures 2 and 4, the sealing gasket 20 includes two arc-shaped sealing strips 21, wherein the radius of one arc-shaped sealing strip 21 is greater than the radius of the other arc-shaped sealing strip 21; The two ends of 21 are respectively connected by two arched sealing strips 22 to form a closed-loop sealing ring.

Preferably, a plurality of protrusions 24 are arranged on both sides of the arc-shaped sealing strip 21 and both sides of the arch-shaped sealing strip 22, and the protrusions 24 are connected to the sides of the arc-shaped groove 13 and the arch-shaped groove 14. The wall interference fit makes the gasket 20 expand and fix.

Preferably, the protrusions 24 are semi-cylindrical, and the length direction of each protrusion 24 is arranged along the direction when the gasket 20 enters and leaves the ring groove, so as to facilitate the installation and removal of the gasket 20 .

Preferably, both ends of the arc-shaped sealing strip 21 are respectively provided with a wedge-shaped protrusion 23, the inner edge of the protrusion 23 is higher than the outer edge, and after the two ends of the arc-shaped sealing strip 21 are squeezed, its The inner side collapses slightly larger than the outer side, and the utility model sets the wedge-shaped protrusions 23 at both ends of the arc-shaped convex strip, which can fill the collapsed area and further ensure that the gaskets 20 on both sides are closely matched; the arc-shaped sealing A plurality of arc-shaped ridges 25 are arranged on the inner ring surface of the strip 21, and the ridges 25 will be deformed after being squeezed by the pipe 30, and are tightly attached to the outer ring surface of the pipe 30 to ensure reliable sealing at the end.

Preferably, the arched sealing strip 22 is provided with a positioning protrusion 26, and the positioning protrusion 26 protrudes toward the groove bottom of the arched groove 14, and the groove bottom of the arched groove 14 is provided with The positioning groove matched with the positioning protrusion 26, and the positioning protrusion 26 cooperating with the positioning groove can prevent the sealing gasket 20 from twisting and moving in the ring groove.

The above descriptions are only preferred embodiments of the utility model creation, and are not intended to limit the utility model creation. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model creation should be Included in the scope of protection created by the utility model.

Claims (1)

1. a kind of reducing type pipeline leakage plugging device housing, it is characterised in that：Including two semicircular housings, the engaging of two halves circular shell is constituted Tubular shell, the diameter with diameter greater than the other end of wherein one end of the tubular shell so as to can sandwich in two reduced pipes The junction in road；The semicircular housing is groove-like structure, and when two halves circular shell engages, tubular shell two ends are in closing in Shape, tubular shell stage casing radially outward arch upward along pipeline；Two arc bar grooves are provided with the inside of the arc-shaped side at semicircular housing two ends； The arch side of semicircular housing both sides is provided with two arch bar grooves；The two arches bar groove is sequentially connected with two arc bar grooves； The arch side of the semicircular housing both sides is provided with the flange for protruding out laterally, and two halves circular shell is using on the flange The bolt mounting holes for opening up are bolted；The arch bar groove is arranged on the end face of the flange.