CN203963368U

CN203963368U - The inside and outside straight-tube pressure balanced compensator of pressing

Info

Publication number: CN203963368U
Application number: CN201420374563.2U
Authority: CN
Inventors: 李水章
Original assignee: BEIJING XINGDA CORRUGATED PIPE Co Ltd
Current assignee: BEIJING XINGDA CORRUGATED PIPE Co Ltd
Priority date: 2014-07-04
Filing date: 2014-07-04
Publication date: 2014-11-26
Anticipated expiration: 2024-07-04

Abstract

The inside and outside straight-tube pressure balanced compensator of pressing belongs to the pressure-equalizing corrugated compensator that pipeline is used, and changes two work bellowss of the prior art and a structure that balance bellows is all worked under interior pressure condition; Entirety is left and right symplex structure, two work bellowss (10) are all operated in outer pressure condition, therefore, there is no the restriction of internal pressure corrugated pipe stability, can increase its displacement capacity by increasing wave number, and balance bellows (13) is operated in interior pressure condition, but its diameter is larger than the diameter of work bellows (10), even if less wave number, in meeting stability, also can have larger displacement capacity; Therefore science, economic design, making have compared with the straight-tube pressure balanced compensator of large compensation axial displacement ability more, and overall left and right symmetry, easy to install, non-directional.

Description

The inside and outside straight-tube pressure balanced compensator of pressing

Technical field

The invention belongs to the pressure-equalizing corrugated compensation device that pipeline is used, relate to a kind of inside and outside straight-tube pressure balanced compensator of pressing.

Background technique

Conventional straight-tube pressure balanced compensator, is made up of two work bellowss and a balance bellows, and these three bellowss are all operated in interior pressure condition, are subject to the restriction of internal pressure corrugated pipe stability, and the wave number increase of bellows is restricted; But because the diameter of balance bellows is all large than the diameter of work bellows, therefore, under identical wave number, the displacement capacity of balance bellows is all large than work bellows displacement capacity, and work bellows is owing to being subject to the restriction of stability can not increase wave number, thereby limit the displacement capacity of balance bellows, also just limited the displacement capacity of whole compensator, i.e. uneconomical also science not.

Summary of the invention

The technical problem solving:

The inside and outside balanced compensated device of straightening pipe pressure is provided, can overcome the deficiencies in the prior art, utilize the principle of conventional straight-tube pressure balanced compensator, formed by two work bellowss and a balance bellows equally, two work bellowss wherein are all operated in outer pressure condition, there is no the restriction of internal pressure corrugated pipe stability, its wave number can be a lot, can improve the ability of whole compensator compensates axial displacement; Balance ripple pipe work is wherein at interior pressure condition, but its diameter is larger than the diameter of work bellows, even if less wave number, in meeting stability, also can have larger displacement capacity.

The technological scheme adopting:

The inside and outside straight-tube pressure balanced compensator of pressing, has left and right end pipe, intervalve, two work bellowss and a balance bellows, it is characterized in that: entirety is left and right symplex structure; On left and right end pipe and corresponding left and right intervalve are mutually related the outer wall at Active Interface position, have respectively by innner and outer end ring, the body of outer casing and guide ring composition, is separately installed with the work bellows of working under pressure condition outside in each body; The outer end of each body is fixed end, respectively by outer end ring seal welding on the outer wall of left and right end pipe, the inner end of each body is movable end, interrelated with the outer wall telescopic of the center hole of inner end ring and intervalve accordingly together with; On left and right intervalve is mutually related the outer wall at Active Interface position, seal weld is connected to stiffening ring respectively, and the balance bellows of working under interior pressure condition is welded on stiffening ring by transition ring; The two-port difference seal welding of described each outer casing is on the end ring of corresponding innner and outer.

Beneficial effect:

The inside and outside straight-tube pressure balanced compensator of pressing, because two work bellowss are all operated in outer pressure condition, there is no the restriction of internal pressure corrugated pipe stability, therefore, can increase its displacement capacity by increasing wave number, and the work of balance ripple pipe is at interior pressure condition, but its diameter is larger than the diameter of work bellows, even if less wave number, in meeting stability, also can have larger displacement capacity; Therefore, be convenient to mate work bellows and balance bellows, science, economic design, making have compared with the straight-tube pressure balanced compensator of large compensation axial displacement ability more; Because entirety is left and right symplex structure, easy to install, non-directional.

Brief description of the drawings

Fig. 1, overall construction drawing;

Fig. 2, amplifies I by shown in Fig. 1, (a) annular ring type, (b) intervention formula.

Embodiment

Further explanation in detail by reference to the accompanying drawings:

As Fig. 1, shown in 2, the entirety of inside and outside pressure straight-tube pressure balanced compensator is left and right symplex structure; On left and right end pipe 1,2 and corresponding left and right intervalve 3,4 are mutually related the outer wall at Active Interface position, there is respectively the body 9 being formed by the outer casing 7 of innner and outer end ring 5,6 and guide ring 8, in each body 9, be separately installed with the work bellows 10 of the work of depressing outside; The outer end of each body 9 is fixed end, respectively by outer end ring 6 seal weldings on the outer wall of left and right end pipe 1,2, the inner end of each body 9 is movable end, interrelated with the outer wall telescopic of the center hole 11 of inner end ring 5 and intervalve accordingly together with; On left and right intervalve 3,4 is mutually related the outer wall at Active Interface position, seal weld is connected to stiffening ring 12 respectively, and the balance bellows 13 of working under interior pressure condition is welded on stiffening ring 12 by transition ring 14; The two-port difference seal welding of described each outer casing 7 is on corresponding innner and outer end ring 5,6.

The mounting structure of bellows 10 of working in described body 9 is, seal welding is in the respective external wall of left and right intervalve 3,4 respectively for guide ring 8 in each body 9, and transition ring 14 seal weldings are passed through respectively on the inner end of corresponding body 9 ring 5 and guide ring 8 in the two ends of the bellows 10 of respectively working.

The be mutually related structure at Active Interface position of described corresponding two pipes is, as Fig. 2 (a) is depicted as annular ring type, corresponding two mouths of pipe are flat mouth 15, and space type is associated together in opposite directions mutually, and coaxial flat mouth is at a distance of S; Or as Fig. 2 (b) is depicted as intervention formula, corresponding two mouths of pipe are the flute profile mouth 16 complementing one another, and mutual spacing is engagement type to be associated together, and coaxial between cog is at a distance of S, with circumferential between cog m apart; Described S is installing space, and S must fully meet the axial displacement compensation rate of respective line.

Described installing space S, compensator does not play compensating axial displacement and does the spacing of used time.

Claims

1. the inside and outside straight-tube pressure balanced compensator of pressing, has left and right end pipe, intervalve, two work bellowss and a balance bellows, it is characterized in that: entirety is left and right symplex structure; On left and right end pipe and corresponding left and right intervalve are mutually related the outer wall at Active Interface position, have respectively by innner and outer end ring, the body of outer casing and guide ring composition, is separately installed with the work bellows of working under pressure condition outside in each body; The outer end of each body is fixed end, respectively by outer end ring seal welding on the outer wall of left and right end pipe, the inner end of each body is movable end, interrelated with the outer wall telescopic of the center hole of inner end ring and intervalve accordingly together with; On left and right intervalve is mutually related the outer wall at Active Interface position, seal weld is connected to stiffening ring respectively, and the balance bellows of working under interior pressure condition is welded on stiffening ring by transition ring; The two-port difference seal welding of described each outer casing is on the end ring of corresponding innner and outer.

2. the inside and outside straight-tube pressure balanced compensator of pressing according to claim 1, it is characterized in that: in described body (9), the mounting structure of work bellows (10) is, seal welding is in the respective external wall of left and right intervalve (3,4) respectively for guide ring (8) in each body (9), and the two ends of the bellows (10) of respectively working are encircled on (5) and guide ring (8) in the inner end of corresponding body (9) by transition ring (14) seal welding respectively.

3. the inside and outside straight-tube pressure balanced compensator of pressing according to claim 1 and 2, it is characterized in that: the be mutually related structure at Active Interface position of described corresponding two pipes is annular ring type, corresponding two mouths of pipe are flat mouth (15), space type is associated together in opposite directions mutually, and coaxial flat mouth is at a distance of S; Or be intervention formula, corresponding two mouths of pipe are the flute profile mouth (16) complementing one another, and mutual spacing is engagement type to be associated together, and coaxial between cog is at a distance of S, with circumferential between cog m apart.