CN204879239U

CN204879239U - Branching is displacement compensation ripple tube swelling festival for pipeline

Info

Publication number: CN204879239U
Application number: CN201520527587.1U
Authority: CN
Inventors: 李�杰; 陈友恒; 李世乾; 张玉佳; 付强
Original assignee: Luoyang Sunrui Special Equipment Co Ltd
Current assignee: CSSC Shuangrui Luoyang Special Equipment Co Ltd
Priority date: 2015-07-21
Filing date: 2015-07-21
Publication date: 2015-12-16
Anticipated expiration: 2025-07-21

Abstract

The utility model belongs to pipeline compensation field provides a branching is displacement compensation ripple tube swelling festival for pipeline. A branching is displacement compensation ripple tube swelling festival for pipeline who provides is including entrance point pipe (1) (b), (b) exit end pipe (14) and draw bar assembly, be connected by branching pipe fitting (7) between entrance point pipe (1) and the exit end pipe (14), be connected with the bellows I (2) as the flexible compensation component of pipeline on entrance point pipe (1), be connected with the bellows II (13) as the flexible compensation component of pipeline on exit end pipe (14), and I (2) symmetry of bellows II (13) and bellows sets up the both sides at branching pipe fitting branching end, bellows I (2), bellows II (13) are a set of at least. The utility model discloses axial displacement and lateral displacement that branching pipeline branching end produced have been compensated to the produced blind plate power of pressure in the pipeline that has retrained has realized balance and the blind plate equilibrium of forces in the displacement.

Description

A kind of bifurcated pipeline bit shift compensation bellows expansion joint

Technical field

The utility model belongs to compensation of pipeline field, is specifically related to a kind of bifurcated pipeline bit shift compensation bellows expansion joint.

Background technique

Bellows expansion joint is a kind of displacement compensation device be widely adopted in pipeling design, can be used for extraction duct additional displacement, equipment sedimentation deformation and the thermal walking of pipeline under thermal force, axialmode, pull rod type and hinge type are applied to straight line MEDIA FLOW to occasion, bend pipe pressure balance type be then applied to MEDIA FLOW to change place.

The main thought of piping flexible design is by arranging support of pipelines, as main fixed pipe support, middle fixed pipe support etc., to string sections, then adopts the flexible members such as expansion joint to make the stress phase of pipeline meet specification stress in simply pipeline trend; For the flexible design of bifurcated pipeline, Normal practice is also arrange fixed pipe support constraint in fork element threeway or four-way place, thus piping is divided into many take-off lines, carries out stress compensation design respectively; Above-mentioned design is in some high pressure, high temperature power conduit and major diameter urban heating pipe network line branches application, the thrust caused due to loine pressure is larger, it is often not too convenient or cause pipe support heavy that fixed pipe support is set, simultaneously because the factor such as expansion of fork element self makes the thermal stress of fork element higher.

Model utility content

For solving the problems of the technologies described above, the purpose of this utility model proposes a kind of bifurcated pipeline bit shift compensation bellows expansion joint.

The utility model adopts following technological scheme for completing above-mentioned purpose:

A kind of bifurcated pipeline bit shift compensation bellows expansion joint, described bit shift compensation bellows expansion joint include entrance point pipe, outlet end pipe and in order to retrain pressure in pipeline produce the rod assembly of blind flange force; Described entrance point pipe is connected by bifurcated pipe fitting with between outlet end pipe; Described entrance point pipe is connected with the bellows I as pipeline flexible compensation element; With the bellows II symmetrically arranged outlet end pipe of entrance point pipe is connected with as pipeline flexible compensation element, and described bellows II and bellows I are symmetricly set on the both sides of bifurcated pipe fitting divergent ends, in order to compensate the axial displacement of bifurcated pipe fitting divergent ends and lateral displacement; Described bellows I, bellows II are at least one group.

Described bellows I, bellows II are one group.

Described bellows I, bellows II are two groups.

A kind of bifurcated pipeline bit shift compensation bellows expansion joint that the utility model proposes, adopt technique scheme, the axial displacement that bifurcated pipeline divergent ends produces and lateral displacement all can realize bidirectional displacement by expansion joint of the present utility model and compensate, divergent ends axial displacement shows as lateral displacement for bellows, one end bellows stretches, one end bellows compression; The bracing structure part of expansion joint can retrain the blind flange force that in pipeline, pressure produces, and the bellows of divergent ends both sides can realize balance in displacement and blind plate equilibrium of forces; Adopt expansion joint of the present utility model, in the Large travel range compensation conduit design that divergent ends produces, fork element place can not establish fixed pipe support, in view of the symmetrically arranged bellows flexible member in divergent ends both sides, fork element can realize free expansion, thus makes its thermal stress under hot operating conditions be in reduced levels; In displacement counter-force, the utility model expansion joint and conventional expanded save and show difference, and the axial displacement counter-force that divergent ends produces is the twice that rigidity walked crosswise by both sides bellows, and the lateral displacement counter-force that divergent ends produces simultaneously is the twice of both sides bellows axial rigidity.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model embodiment 1.

Fig. 2 is the structural representation of the utility model embodiment 2.

Fig. 3 is the structural representation of the utility model embodiment 3.

Fig. 4 is the structural representation of the utility model embodiment 4.

Fig. 5 is the structural representation of the utility model embodiment 5.

In figure: 1, entrance point pipe, 2, bellows I, 3, guide shell, 4, safety cover, 5, intervalve; 6, bar is loaded and transported, 7, bifurcated pipe fitting, 8, shipment lug, 9, shipment nut, 10, pull bar; 11, ball, taper faced washer, 12, pull-rod nut, 13, bellows II, 14, outlet end pipe.

Embodiment

With specific embodiment, the utility model is illustrated by reference to the accompanying drawings, but the utility model is not limited to these embodiments, also can be used in the bifurcated pipeline of other form.

As shown in Figure 1, a kind of bifurcated pipeline bit shift compensation bellows expansion joint, described bit shift compensation bellows expansion joint is for including entrance point pipe 1 ,outlet end pipe 14 and in order to retrain pressure in pipeline produce the rod assembly of blind flange force; Described entrance point pipe 1 is connected by bifurcated pipe fitting 7 with between outlet end pipe 14; Described entrance point pipe 1 is connected with the bellows I 2 as pipeline flexible compensation element; With the bellows II 13 symmetrically arranged outlet end pipe 14 of entrance point pipe 1 is connected with as pipeline flexible compensation element, and described bellows II 13 and bellows I 2 are symmetricly set on the both sides of bifurcated pipe fitting divergent ends; In conjunction with structural member such as expansion joint pull bar 10 grade, expansion joint can realize pipeline pressure and produce blind plate equilibrium of forces and bit shift compensation, two ends due to fork element are flexible member bellows, and therefore fork element can realize free expansion, reduce the thermal stress of expansion joint under hot operating conditions; Described bellows I 2, bellows II 13 are two groups, and this structure can the large divergent ends axial displacement of compensate for slower; Bellows I 2 and bellows II 13 are by arranging rod assembly, and described rod assembly includes pull bar 10, ball, taper faced washer 11 and pull-rod nut 12, realize retraining the blind flange force that in pipeline, pressure produces.

Fig. 2 is the structural representation of the utility model embodiment 2, the agent structure of this embodiment is with embodiment 1, in this embodiment, described bellows I 2, bellows II 13 are one group, the occasion that axial, the horizontal thermal walking that this kind of structure can be used for divergent ends is less.

Fig. 3 is the structural representation of the utility model embodiment 3, and the agent structure of this embodiment is with embodiment 1, and in this embodiment, described bifurcated pipe fitting 7 is four-way structure, and this kind of structure can the axis of effective compensation four go side and lateral displacement.

Fig. 4 is the structural representation of the utility model embodiment 4, the agent structure of this embodiment is with embodiment 1, in this embodiment, described bellows I 2, bellows II 13 are one group, described bifurcated pipe fitting 7 is drawing three-port structure, drawing threeway adopts the mode of arc transition to make under hot, and threeway stress distribution is even.

Fig. 5 is the structural representation of the utility model embodiment 5, and the agent structure of this embodiment is with embodiment 1, and in this embodiment, described bifurcated pipe fitting 7 is skew T structure, can be applied in non-perpendicular bifurcated circuit design.

Claims

1. a bifurcated pipeline bit shift compensation bellows expansion joint, described bit shift compensation bellows expansion joint includes entrance point pipe (1) ,outlet end pipe (14) and in order to retrain pressure in pipeline produce the rod assembly of blind flange force; It is characterized in that: described entrance point pipe (1) is connected by bifurcated pipe fitting (7) with between outlet end pipe (14); Described entrance point pipe (1) is connected with the bellows I (2) as pipeline flexible compensation element; With the bellows II (13) the symmetrically arranged outlet end pipe (14) of entrance point pipe (1) is connected with as pipeline flexible compensation element, and described bellows II (13) and bellows I (2) are symmetricly set on the both sides of bifurcated pipe fitting divergent ends; Described bellows I (2), bellows II (13) are at least one group.

2. a kind of bifurcated pipeline bit shift compensation bellows expansion joint according to claim 1, is characterized in that: described bellows I (2), bellows II (14) are one group.

3. a kind of bifurcated pipeline bit shift compensation bellows expansion joint according to claim 1, is characterized in that: described bellows I (2), bellows II (14) are two groups.

4. a kind of bifurcated pipeline bit shift compensation bellows expansion joint according to claim 1, is characterized in that: described bifurcated pipe fitting ((7)) is three-port structure or four-way structure.