CN2151340Y

CN2151340Y - Dual safety casing tube adjusting connector

Info

Publication number: CN2151340Y
Application number: CN 93206940
Authority: CN
Inventors: 赵铎
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-20
Filing date: 1993-03-20
Publication date: 1993-12-29
Anticipated expiration: 2003-03-20

Abstract

The utility model relates to a novel dual safety sleeve pipe flexible device which belongs to a flexible device connected to a pipeline. The utility model is characterized in that a flexible rubber sleeve pipe is used and a filler double seal characteristic is adopted. The utility model has the advantages of reliable sealing performance, low cost, low accuracy requirement, double seal characteristic and reliable operation.

Description

Dual safety casing tube adjusting connector

The utility model relates to a kind of new casing expansion bend, belongs to a kind of expansion device that is connected on the pipeline.

From present closed conduit expansion bend as can be known, its feature is to utilize liquid or gas in the pipeline to make the seal ring sealing, it has had significant improvement than the sealing material of old-fashioned filler expansion bend from prior art, and the pressure of medium is converted into sealing load, makes it have superiority.Its deficiency is: the sealing material of this expansion bend is subjected to very big frictional force, thereby wearing and tearing are still very serious, during as sealing material wearing and tearing inequality, also can cause water leakage phenomenon.

The purpose of this utility model is a kind of novel dual fail-safe sleeve pipe expansion bend that provides avoiding above-mentioned deficiency of the prior art, and its feature is to adopt soft rubber sleeve pipe and filler double seal.Sealability is reliable.

The purpose of this utility model can reach by following measure:

Be with flexible pipe on conduit and the inner sleeve, one end of flexible pipe is fixed on the conduit, and the other end is fixed on the inner sleeve, and pipe clamp is that flexible pipe is fixed on inner sleeve and the conduit, in addition can be with glue bonding or heat treatment method flexible pipe and metal tube are connected and fixed, such two end interfaces are tight.Since flexible pipe to bear pressure very high, not fragile, so good seal performance, long service life.Tear loss for the accident that prevents flexible pipe, leak, establish a stuffing seal again, make it more safe and reliable in its outer end.

Working principle of the present utility model is that expansion bend is connected with pipeline, when the medium temperature that flows through pipeline raises, and the pipe expansion elongation, cover is to the expansion bend internal motion in the expansion bend; When the medium temperature in the pipeline reduced, pipeline shrank, and inner sleeve outwards moves.

The accompanying drawing drawing is described as follows:

Fig. 1: the sectional drawing of sleeve pipe expansion bend;

Fig. 2: pipe clamp detailed drawing.

--inner sleeve, ［ 2 ］--filler fastening ring, ［ 3 ］--packing seal circle, ［ 4 ］--conduit, ［ 5 ］--outer sleeve, ［ 6 ］--flexible pipe, ［ 7 ］---pipe clamp wherein: ［ 1 ］.

The utility model advantage compared to existing technology is: requirement on machining accuracy is not high, and cost is low, and sealing property is good, has the characteristic of double-deck sealing, and is reliable.

Below in conjunction with accompanying drawing the utility model is described further:

Installation of the present utility model is that inner sleeve ［ 1 ］ is inserted in the conduit ［ 4 ］, flexible pipe ［ 6 ］ is enclosed within on conduit ［ 4 ］ and the inner tube ［ 1 ］ again, and be separately fixed on conduit ［ 4 ］ and the inner sleeve ［ 1 ］ with the two ends of pipe clamp ［ 7 ］ with flexible pipe ［ 6 ］, make it tight, (or be adhesively fixed with rubber liquid, or be adhesively fixed with the heat treatment method). Above-mentioned connector is put into outer tube ［ 5 ］, with ring flange connecting duct ［ 4 ］ and outer tube ［ 5 ］, make it sealing with flange gasket. Then, establish a packing seal circle ［ 3 ］ and filler tight loop ［ 2 ］ at the inner sleeve ［ 1 ］ in conduit ［ 2 ］ outside, make it to have the characteristic of dual fail-safe.

Embodiment's nominal diameter of the present utility model for the Dg150 accompanying drawing for being applicable to operating temperature-20 ℃～+ 150 ℃, working pressure is Pg≤16kg/cm, extending amount is 200mm, the applicable as required butyl rubber sleeve pipe of flexible pipe ［ 6 ］, also can select silicone rubber sleeve for use, also can select for use the soft material of other type to replace, all the other parts are all made with carbon steel.

Claims

1, a kind of novel dual fail-safe sleeve pipe expansion bend, form by inner sleeve [1], filler fastening ring [2], packing seal circle [3], conduit [4], outer sleeve [5], flexible pipe [6] and pipe clamp [7], it is characterized in that: be with flexible pipe [6] on conduit [4] and the inner sleeve [1], pipe clamp [7] is that flexible pipe [6] is fixed on inner sleeve [1] and the conduit [4], is provided with packing seal circle [3] outside conduit [4].

2, expansion bend according to claim 1 is characterized in that: flexible pipe ［ 6 ］ can be selected butyl rubber sleeve pipe, silicone rubber sleeve and other soft material as required for use.

3, expansion bend according to claim 1 is characterized in that: flexible pipe ［ 6 ］ can be made into corrugated, also can make straight-tube shape.

4, expansion bend according to claim 1 is characterized in that: flexible pipe ［ 6 ］ is bonding with inner sleeve ［ 1 ］ and the available glue of conduit ［ 2 ］, and also the available heat processing method is connected and fixed.