CN201326863Y

CN201326863Y - Direct-buried internal pressure compensator

Info

Publication number: CN201326863Y
Application number: CNU2008201243072U
Authority: CN
Inventors: 贾建平; 李伟; 李水章; 薛维法
Original assignee: BEIJING XINGDA CORRUGATED PIPE Co Ltd
Current assignee: BEIJING XINGDA CORRUGATED PIPE Co Ltd
Priority date: 2008-12-05
Filing date: 2008-12-05
Publication date: 2009-10-14
Anticipated expiration: 2018-12-05

Abstract

The utility model discloses a direct-buried internal pressure compensator which belongs to the field of swell compensators used on tubes, and solves the problem that the compensator cannot be directly buried into the earth. A sealed type protection chamber is arranged at the outer part of a ripple tube (11); one end of the protection chamber is welded with a connecting tube at one end in a sealing way; the other end of the protection chamber is a free end; the free end and the connecting tube at the other end form an annular dynamic seal structure; and a right end ring (4) is provided with an opened stuffing box (6), on which a sealing filler (7) tightly pressed by a matched sealing flange (8) is arranged. During the application, axial slip with dynamic seal performance is produced between the sealing filler (7) and a sliding layer (10) arranged on the outer wall of a right connecting tube (2), the compensator is capable of being directly buried in the earth, and the phenomenon that water in the earth and other liquid phase properties enter into the protection chamber is avoided, so that the ripple tube is not easy to be eroded, the performance and the efficacy are not influenced, the assembly and the use are convenient, the service life of the compensator is prolonged, and the investment is reduced.

Description

Press compensator in a kind of direct-burried

Technical field

The utility model belongs to the expansion compensation device field that pipeline is used, and relates to pressing compensator in a kind of direct-burried.

Background technique

Press compensator in the direct-burried of the prior art, mostly need to be provided with the special-purpose ground well of compensator, cumbersome, if direct-burried is in earth, the one, big to the outer wall corrosion of bellows in the compensator, inconvenience is safeguarded again, the 2nd, and earth fills up the ripple external series gap of bellows, the earth resistance can have a strong impact on the performance and the effect of compensator, can increase input and strengthen compensation rate.

Summary of the invention

The technical problem that solves:

By changing structure, increase outer jointing jacket and corresponding seal arrangement, can overcome the deficiencies in the prior art, compensator can directly be imbedded in the earth, be difficult for being corroded, and performance and effect is also unaffected, can also increase the service life, and reduce and drop into.

The technological scheme that adopts:

Press compensator in a kind of direct-burried; have the adapter that directly connects together with bellows and in the guide shell established; it is characterized in that: the protection chamber that has sealed type at the bellows outside left; in the welding adapter at one end of one end sealed type of this chamber; the other end of this chamber is a movable end, movable sealing structure in the form of a ring between the adapter of the movable end and the other end.

Beneficial effect:

Compensator can directly be imbedded in the mud; need not special-purpose ground well; because the movable sealing structure on the movable end of the protection chamber of sealed type; it is indoor to avoid water in the earth and other liquid phase mediums to enter into protection, and therefore, bellows is difficult for being corroded; and performance, the effect of bellows are unaffected; be convenient to simultaneously install and use, can not only prolong the working life of compensator, and can reduce input.

Description of drawings

Fig. 1, main assembly structural representation;

Embodiment

Further explanation in detail in conjunction with the accompanying drawings, among the figure, 11 are shown bellows, and 12 are shown guide shell, and arrow is shown the direction of media flow.

As shown in Figure 1; the structure of the protection chamber of sealed type is; the left side that is welded on left end ring 3 sealed types is taken on 1; right-hand member ring 4 is enclosed within right the adapter on 2 by its center slide opening; the two-port of outer casing 5 that is positioned at the outside left of bellows 11 welds together with the outer circumferential edge sealing of left end ring 3 and right-hand member ring 4 respectively; on the peripheral position of the center of right-hand member ring 4 slide opening; has the outer open form stuffing box 6 that processes with right-hand member ring 4 integral body; the stuffing box packing 7 that compresses by supporting sealing flange 8 is housed on the stuffing box 6; sealing flange 8 is contained on the outer side surface of right-hand member ring 4 by fastening piece 9; the sliding layer 10 that has one deck smooth abrasion-proof on the outer wall of right adapter 2 is motive sealing between sliding layer 10 and the stuffing box packing 7.Sliding layer 10 is one deck stainless steel covering on the outer wall that is welded on right adapter 2.

In the normal use, produce motive sealing between stuffing box packing 7 and the sliding layer 10 and endwisely slip.

Claims

1, presses compensator in a kind of direct-burried; have the adapter that directly connects together with bellows and in the guide shell established; it is characterized in that: the protection chamber that has sealed type at the bellows outside left; in the welding adapter at one end of one end sealed type of this chamber; the other end of this chamber is a movable end, movable sealing structure in the form of a ring between the adapter of the movable end and the other end.

2; press compensator in a kind of direct-burried according to claim 1; it is characterized in that: the structure of the protection chamber of sealed type is; the left side that is welded on left end ring (3) sealed type is taken on (1); right-hand member ring (4) is enclosed within right the adapter on (2) by its center slide opening; the two-port of outer casing (5) that is positioned at the outside left of bellows (11) welds together with the outer circumferential edge sealing of left end ring (3) and right-hand member ring (4) respectively; on the periphery position of the center slide opening of right-hand member ring (4); has the outer open form stuffing box (6) that processes with right-hand member ring (4) integral body; the stuffing box packing (7) that compresses by supporting sealing flange (8) is housed on the stuffing box (6); sealing flange (8) is contained on the outer side surface of right-hand member ring (4) by fastening piece (9), has the sliding layer (10) of one deck smooth abrasion-proof on the outer wall of right adapter (2).

3, press compensator in a kind of direct-burried according to claim 2, it is characterized in that: sliding layer (10) is one deck stainless steel covering on the outer wall that is welded on right adapter (2).