CN201293168Y

CN201293168Y - Directly-burying and exempt- maintaining one-way sleeve compensator

Info

Publication number: CN201293168Y
Application number: CNU2008202189569U
Authority: CN
Inventors: 刘君
Original assignee: SHENYANG AVIC LIMING MACHINERY MANUFACTURE CO Ltd
Current assignee: SHENYANG AVIC LIMING MACHINERY MANUFACTURE CO Ltd
Priority date: 2008-11-06
Filing date: 2008-11-06
Publication date: 2009-08-19
Anticipated expiration: 2018-11-06

Abstract

The utility model provides a direct-burried and maintenance-free one-way sleeve compensator which comprises a front end pipe and a rear end pipe, and is characterized in that the front end pipe and the rear end pipe are communicated through a shell; the front end of the shell is welded and fixed on the front end pipe, and the rear end is related-jointed on the rear end pipe; a groove with a V-shaped axial section is arranged between the rear end of the shell and the rear end pipe, and a rubber sealing ring is arranged in the groove with a V-shaped axial section; the rubber sealing ring is tightly pressed by a gland bush; and the gland bush is fixed on a support of the shell. The utility model can sufficiently prevent inside water from percolating and can also well achieve the compensating effect; meanwhile, the leakage preventing effect is stable, therefore, the compensator needs no maintenance, is simple and reasonable for arrangement, simple and convenient for operation and more beneficial to being popularized and applied.

Description

The non-maintaining unidirectional sleeve expansion joint of direct-burried

Technical field:

The utility model relates to a kind of compensation device of directly buried pipeline, the non-maintaining unidirectional sleeve expansion joint of especially a kind of direct-burried.

Background technique:

At present, compensation field at directly buried pipeline, the form that compensator is set by the end pipe place two disconnections connects two end pipes, but present compensator effect is all undesirable, water leakage phenomenon often appears, be subjected to simultaneously erosion easily from surface water in compensator and pipeline joint, and the technical problem that the solution compensator leaks and become people to solve with erodible phenomenon.

Summary of the invention:

Goal of the invention: the utility model has solved undesirable, the easy leakage problems of compensator compensates effect in the past.

Technological scheme: the utility model is achieved through the following technical solutions:

The non-maintaining unidirectional sleeve expansion joint of a kind of direct-burried comprises front tube and rear end pipe, and it is characterized in that: front tube and rear end pipe are communicated with by shell; The front end of shell is weldingly fixed on the front tube, and the rear end is overlapped on the rear end pipe; Axial cross section of formation is long-pending between the rear end of shell and the rear end pipe is to be provided with rubber seal in " V " shape groove by the groove of " V " shape; Rubber seal is glanded and compresses; Gland is fixed on the flange of shell.

Gland and rubber seal are covered by the sealing of outer tube assembly; One end of outer tube assembly is welded on the flange, and the other end is arranged on the rear end pipe; The contacting point of outer tube assembly and rear end pipe is provided with sealed packing.

Advantage and effect: the utility model provides a kind of direct-burried non-maintaining unidirectional sleeve expansion joint, it connects front tube and rear end pipe by shell, the front end of shell is welded on the front tube, the rear end is overlapped on the rear end pipe, and the mode why the other end is not shut to shell and being connected of pipeline adopting an end to shut, be because along with expanding with heat and contract with cold in the pipeline, can produce relative slip between pipeline and the shell; Be provided with " V " shape groove in the rear end of rear end pipe and shell lap-joint, be provided with the contacting point sealing of rubber seal in " V " shape groove with rear end pipe and shell, and rubber seal is compressed with gland, because " V " shape groove is along the inside diminishing structure of opening, so the easier rubber seal that makes compresses, to reach better sealing effect; In addition, also being provided with the outer tube assembly outside gland further seals enclosing cover and rubber seal, not only guaranteed the working life and the using effect of rubber seal, simultaneously, even also guarantee under the prerequisite that rubber seal lost efficacy, liquid medium in the pipeline can not leak yet, further guarantee the normal operation of whole pipeline, simultaneously, because dual leakage proof effect is more stable, also make this device to safeguard, its be provided with advantages of simple, easy and simple to handle, relatively be beneficial to and apply.

Description of drawings:

Fig. 1 is a broken section structural drawing vertically of the present utility model.

Embodiment:

Below in conjunction with accompanying drawing the utility model is done nearly step explanation:

As shown in Figure 1, the utility model provides a kind of direct-burried non-maintaining unidirectional sleeve expansion joint, and it is provided with shell 3 between front tube 1 and rear end pipe 2.The front end of shell 3 is welded on the front tube, and the rear end is overlapped on the rear end pipe 2; Be provided with in the contacting point of the rear end of shell 3 and rear end pipe that axial cross section is long-pending to be the skewed slot of " V " shape, skewed slot around one week of rear end pipe ringwise; Be provided with the rubber seal 6 that shape with it adapts in skewed slot, rubber seal 6 is glanded 5 and compresses, because " V " shape groove inwardly shrinks gradually along opening, so under the effect of gland 5, sealing effect is better; Gland 5 is by being bolted on the flange 8; Gland 5 is covered by 4 sealings of outer tube assembly; One end of outer tube assembly 4 is welded on the flange 8, and the other end is arranged on the rear end pipe 2; Outer tube assembly 4 is provided with sealed packing 7 with the contacting point of rear end pipe 2, and sealed packing 7 is with the contacting point sealing of outer tube assembly 4 with rear end pipe 2.

The non-maintaining unidirectional sleeve expansion joint of this direct-burried seals front tube 1 and rear end pipe 2 by shell 3, by outer tube assembly 4 gland 5 and rubber seal 6 are sealed once more then, thereby the rear end pipe 2 and the contact jaw of shell 3 are realized double seal, further guarantee sealing effect, thereby the normal operation to pipeline realizes duplicate protection, when rubber seal 6 lost efficacy, under the protection of outer tube assembly 4, material in the pipeline can not leak yet, and outer tube assembly 4 is also realized sealing to rubber seal 6 simultaneously, make shell 3 and the contacting point of rear end pipe and the erosion that rubber seal 6 is avoided external substance, increased the working life of rubber seal, simultaneously, make that the contacting point of shell 3 and rear end pipe 2 can corrosion, because rear end pipe can relatively move producing under the effect of expanding with heat and contract with cold and between the shell 3, so shell 3 can not be fixed extremely with the contacting point of rear end pipe 2; In like manner, outer tube assembly 4 with can not fix being connected of rear end pipe 2 extremely, and seal, to guarantee relatively moving between rear end pipe 2 and the shell 3 by sealed packing 7.

This compensator be provided with advantages of simple, easy and simple to handle, relatively be beneficial to and apply.

Claims

1, the non-maintaining unidirectional sleeve expansion joint of a kind of direct-burried comprises front tube (1) and rear end pipe (2), it is characterized in that: front tube (1) and rear end pipe (2) are communicated with by shell (3); The front end of shell (3) is weldingly fixed on the front tube (1), and the rear end is overlapped on the rear end pipe (2); Axial cross section of formation is long-pending between the rear end of shell (3) and the rear end pipe (2) is to be provided with rubber seal (6) in " V " shape groove by the groove of " V " shape; Rubber seal (6) is glanded (5) and compresses; Gland (5) is fixed on the flange (8) of shell (3).

2, the non-maintaining unidirectional sleeve expansion joint of a kind of direct-burried according to claim 1 is characterized in that: gland (5) and rubber seal (6) are covered by outer tube assembly (4) sealing; One end of outer tube assembly (4) is welded on the flange (8), and the other end is arranged on the rear end pipe (2); Outer tube assembly (4) is provided with sealed packing (7) with the contacting point of rear end pipe (2).