CN212377511U

CN212377511U - High-pressure linkage expansion joint

Info

Publication number: CN212377511U
Application number: CN202021132049.XU
Authority: CN
Inventors: 林阿满
Original assignee: Zhejiang Yueding Corrugated Tube Co ltd
Current assignee: Zhejiang Yueding Corrugated Tube Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-01-19
Anticipated expiration: 2030-06-17

Abstract

The utility model discloses a high pressure linkage expansion joint, including bellows and two outer tubes to and set up two flanges in two outer tube one ends respectively, still including installing at least one beaded finish between a plurality of ripple archs of bellows, be provided with along bellows axial extension between two flanges with the unsteady supporting component of beaded finish linkage when the pipeline needs utilize the bellows to carry out axial compensation, unsteady supporting component atress can be followed bellows axial concertina movement, and then drives a plurality of ripple archs through the beaded finish and carry out effective flexible deformation, can make every bellied deflection of ripple keep synchronous unanimity like this to reach the evenly distributed of offset, avoid the ripple of bellows on the local position to take place elastic fatigue phenomenon, improve the life and the performance of product.

Description

High-pressure linkage expansion joint

Technical Field

The utility model relates to a pipeline compensation arrangement technical field, concretely relates to high pressure linkage expansion joint.

Background

When the pipeline is put into operation after installation, expansion with heat and contraction with cold are generated due to the difference between the temperature of the medium in the pipeline and the ambient temperature during installation, and if the temperature changes, the pipeline cannot be expanded or contracted completely and freely, so that the pipeline can be damaged. For this reason, the installation of expansion joints (pipe compensators) on the pipes can play a crucial role in the safe operation of the pipeline system.

The existing expansion joint comprises a working body which is composed of a corrugated pipe (an elastic element) and accessories such as an end pipe, a support, a flange and the like. The corrugated pipe is provided with a plurality of corrugated bulges which are arranged at intervals, and the effective telescopic deformation of the corrugated pipe is utilized to absorb the dimensional change of pipelines, conduits, containers and the like caused by expansion with heat and contraction with cold and the like, so that the axial and angular displacement of the pipelines, the conduits, the containers and the like can be well compensated, and the corrugated pipe is widely applied to pipeline systems. However, in practical application, when the pipeline is subjected to thermal expansion and cooling and is subjected to axial compensation through the corrugated pipe, because each corrugated protrusion is affected by the difference of the rigidity strength of the forming process, the compensation is not uniform among the corrugated protrusions, so that the positions with smaller rigidity are compensated first, the compensation amount distribution is not uniform, and after long-term operation, the corrugations can generate failure modes such as fatigue cracks and the like, and the service life of the product is affected.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming and to have the uneven phenomenon of compensation between every ripple arch of bellows among the prior art, can lead to this ripple to produce failure mode such as fatigue crack after long-term operation like this, influences product life's problem.

In order to solve the technical problem, the utility model provides a high pressure linkage expansion joint, be in including bellows and connection two outer tubes at bellows both ends, and set up respectively two the outer tube is close to two flanges of the one end of bellows, the bellows includes the ripple arch that a plurality of intervals set up, still including installing at least one beaded finish between a plurality of ripple archs of bellows, two follow between the flange bellows axial extension is provided with at least one the unsteady supporting component of beaded finish linkage, unsteady supporting component atress can be followed bellows axial telescopic movement, and pass through the beaded finish makes a plurality ofly the ripple arch keeps the synchronization action.

As a preferred scheme, the floating support assembly comprises at least one group of link mechanisms which are sequentially connected, and the two flanges are connected with the reinforcing ring through at least one group of link mechanisms.

Preferably, each group of link mechanisms comprises two symmetrical and telescopic rhombic structure units, and two ends of each rhombic structure unit are connected with the adjacent flange and the adjacent reinforcing ring or connected with the adjacent two reinforcing rings.

As a preferred scheme, the two rhombic structure units comprise four short connecting plates and two long connecting plates, pin holes are formed in the two ends of each of the short connecting plates and the two ends of each of the long connecting plates respectively, and the two ends of each of the long connecting plates are hinged to the two short connecting plates through pin shafts.

As a preferable scheme, a connecting hole is formed in the middle of the long connecting plate, the long connecting plate penetrates through the connecting hole through a positioning piece and is connected with the reinforcing ring, and the short connecting plate penetrates through a pin hole in the short connecting plate and is connected with the flange through the positioning piece.

As a preferable scheme, the flange and the reinforcing ring are respectively provided with positioning holes matched with the positioning pieces.

Preferably, the reinforcing ring comprises two semicircular ring structures, and the two semicircular ring structures are clamped and fastened between the corrugated bulges of the corrugated pipe through a fixing structure.

Preferably, the fixing structure includes two bosses oppositely disposed on the semicircular ring structure, mounting holes correspondingly disposed on the bosses, and bolt assemblies passing through the mounting holes to apply fastening force to the two bosses.

Preferably, an outer shell covering the flange, the corrugated pipe and the floating support assembly is arranged between the two outer sleeves.

The utility model discloses technical scheme has following advantage:

1. in the high-pressure linkage expansion joint provided by the utility model, the floating support component which can be telescopically moved along the axial direction of the corrugated pipe is arranged between the two flanges, the floating support component is in linkage fit with the reinforcing ring arranged between the corrugated bulges, the reinforcing ring plays a role in resisting pressure and bearing the corrugated pipe, the structural strength of the corrugated pipe is enhanced, and the design has the advantages that, when the pipeline needs to be axially compensated by using the corrugated pipe, the floating support component can be compressed or stretched by the flange on the outer sleeve to move for a certain distance, further drives a plurality of corrugated bulges to effectively expand and contract and deform through the reinforcing ring and uniformly absorb axial displacement, so that the deformation of each corrugated bulge can be kept synchronous and consistent, therefore, the compensation amount is uniformly distributed, the phenomenon of elastic fatigue of the corrugation of the corrugated pipe at a local position is avoided, and the service life and the service performance of the product are improved.

2. The utility model provides an among the high pressure linkage expansion joint, two flanges are connected through a set of link mechanism at least with the beaded finish, link mechanism includes two symmetrical telescopic rhombus constitutional units, and this kind of double diamond structure design's link structure can link two flanges and a plurality of beaded finish together, realizes remote transmission to can change its relative length, with the requirement of satisfying the even regulation distribution of compensation volume of bellows, reasonable in design, the cooperation transmission is reliable, guarantees that every ripple of bellows can evenly absorb axial displacement and can be high pressure resistant.

3. The utility model provides an among the high pressure linkage expansion joint, with two semicircle structure centre grippings at the groove position of bellows, the mounting hole that passes the boss through bolt assembly fastens two semicircle structures together to constitute and surround the beaded finish of bellows, mounting structure is simple, and simple to operate is swift, can promote the high pressure resistant bearing capacity of bellows through the beaded finish, and structural strength is big, thereby the effectual beaded finish realizes perfect combination to the big offset of bellows and tightness.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structure view of a high-pressure linkage expansion joint provided by the present invention;

fig. 2 is a schematic view of the installation structure of the floating support assembly of the present invention;

fig. 3 is a schematic plan view of the reinforcing ring of the present invention;

FIG. 4 is a side view of the reinforcement ring of the present invention;

description of reference numerals: the structure comprises a corrugated pipe 1, corrugated bulges 11, an outer sleeve 2, a flange 3, a reinforcing ring 4, a semicircular ring 41, a floating support assembly 5, a rhombic mechanism unit 50, a short connecting plate 51, a long connecting plate 52, a pin shaft 53, a positioning piece 54, a positioning hole 55, a fixing structure 6, a boss 61, a bolt assembly 62 and an outer shell 7.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the embodiment provides a high-pressure linkage expansion joint as shown in fig. 1-4, which includes a corrugated pipe 1, two outer sleeves 2 connected to two ends of the corrugated pipe 1, and two flanges 3 respectively disposed at two ends of the corrugated pipe 2, where the outer sleeves 2 are close to one end of the corrugated pipe, the corrugated pipe 1 includes a plurality of corrugated protrusions 11 disposed at intervals, and further includes at least one reinforcing ring 4 disposed between the plurality of corrugated protrusions of the corrugated pipe 1, and a floating support assembly 5 linked with at least one reinforcing ring 4 is disposed between the flanges 3 along an axial direction of the corrugated pipe 1, where the floating support assembly 5 is stressed to move in an axial direction of the corrugated pipe 1 in a telescopic manner, and the reinforcing ring 4 keeps the plurality of corrugated protrusions 11 in a synchronous motion.

The above embodiment is the core technical solution of this embodiment, a floating support assembly 5 that can telescopically move along the axial direction of the corrugated pipe is arranged between two flanges 3, the floating support assembly 5 is in linkage fit with a reinforcing ring 4 arranged between corrugated protrusions, the reinforcing ring 4 plays a role in resisting pressure and bearing the corrugated pipe, and the structural strength of the corrugated pipe is increased, so that when the pipeline needs to be axially compensated by the corrugated pipe, the floating support assembly 5 is compressed or stretched by the flange on the outer sleeve 2 for a certain distance, and then the reinforcing ring 4 drives a plurality of corrugated protrusions to effectively extend and contract and deform and uniformly absorb axial displacement, so that the deformation of each corrugated protrusion can be kept synchronous and consistent, thereby achieving uniform distribution of compensation amount and avoiding the phenomenon of elastic fatigue of the corrugated pipe 1 at a certain local position, the service life and the service performance of the product are improved.

The specific structure of the floating support assembly is described in detail below with reference to fig. 1-2:

the supporting component 5 floats including the at least a set of link mechanism that links to each other in proper order and set up, two flange 3 with beaded finish 4 is through at least a set of link mechanism connects, outer tube 2 is continuous with the pipeline, flange 3 can follow outer tube 2 takes place axial displacement, joins in marriage through the linkage of link mechanism and beaded finish and drives a plurality of ripple archs and carry out synchronous flexible compensation. Further set up, every group link mechanism includes two symmetry telescopic rhombus constitutional unit 50, rhombus constitutional unit 50's both ends are connected adjacently flange 3 and beaded finish 4 or connect adjacent two beaded finish 4, it is visible rhombus constitutional unit 50 is a four-bar linkage, and this kind of link structure of two rhombus structural design can be in the same place two flange 3 and the linkage of a plurality of beaded finish 4, realizes remote transmission to can change its relative length, in order to satisfy bellows 1's compensation volume evenly adjusts the requirement of distribution, reasonable in design, the cooperation transmission is reliable, guarantees that every ripple of bellows can both evenly absorb axial displacement and can be high pressure resistant.

As a specific structural arrangement, as shown in fig. 2, two of the diamond-shaped structural units 50 are composed of four short connecting plates 51 and two long connecting plates 52, pin holes are respectively arranged at two ends of the short connecting plates 51 and the long connecting plates 52, pin shafts can be arranged in the pin holes, two ends of the long connecting plates 52 are provided with two of the short connecting plates 51 through pin shafts 53 in a hinged manner, one end of the short connecting plate 51, which is opposite to the long connecting plate, is connected to the flange or the reinforcing ring, wherein a connecting hole is arranged in the middle of the long connecting plate 52 and is connected to the reinforcing ring 4 through a positioning member 54, the short connecting plate 51 is connected to the flange 3 through the pin hole on the positioning member 54, the reinforcing ring 4 and the flange 3 are respectively provided with positioning holes 55 matched with the positioning members, and the plurality of positioning holes 55 and the plurality of positioning members 54 are connected on the same straight line, the positioning member 54 is a hexagon bolt, and the rhombic structure unit, the flange and the reinforcing ring are reliably connected together through the positioning member and are used as a supporting point for the telescopic motion of the rhombic structure unit 50, so that the plurality of reinforcing rings arranged between the corrugated bulges are arranged in a linkage manner.

The specific structure of the reinforcement ring is described in detail below with reference to fig. 3-4:

the reinforcing ring 4 comprises two semicircular ring structures 41, the two semicircular ring structures 41 are clamped and fastened between corrugated bulges of the corrugated pipe 1 through a fixing structure 6, specifically, the fixing structure 6 comprises two bosses 61 which are respectively oppositely arranged on the semicircular ring structures 41, mounting holes correspondingly arranged on the bosses 61, and a bolt assembly 62 which penetrates through the mounting holes to apply fastening force to the two bosses 61, the two semicircular ring structures 41 are clamped at the groove positions of the corrugated pipe 1, the two semicircular ring structures 41 are fastened together through the mounting holes of the bosses 61 penetrated by the bolt assembly 62, so that the reinforcing ring 4 which surrounds the corrugated pipe 1 is formed, the mounting structure is simple, the mounting is convenient and quick, the high pressure resistance bearing capacity of the corrugated pipe can be improved through the reinforcing ring 4, and the structural strength is high, thereby effectively utilizing the reinforcing ring 4 to realize perfect combination of large compensation amount and firmness of the corrugated pipe 1.

As shown in fig. 1, an outer shell 7 is arranged between the two outer sleeves 2 and covers the flange 3, the corrugated pipe 1 and the floating support assembly 5, and the flange, the corrugated pipe and the floating support assembly are protected by the outer shell 7, so that the influence of external environmental factors on the corrugated pipe is reduced, and the use is safe and reliable.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A high-pressure linkage expansion joint comprises a corrugated pipe (1) and two outer sleeves (2) connected to two ends of the corrugated pipe (1), and two flanges (3) respectively arranged at one ends of the two outer sleeves (2) close to the corrugated pipe, the corrugated pipe (1) comprises a plurality of corrugated bulges (11) arranged at intervals, the method is characterized in that: the corrugated pipe is characterized by further comprising at least one reinforcing ring (4) arranged among a plurality of corrugated bulges of the corrugated pipe (1), a floating support component (5) linked with the at least one reinforcing ring (4) is arranged between the two flanges (3) in an axially extending manner along the corrugated pipe (1), the floating support component (5) can be stressed to move in a telescopic way along the axial direction of the corrugated pipe (1), and the corrugated bulges (11) are kept to act synchronously through the reinforcing ring (4).

2. The high-pressure linkage expansion joint according to claim 1, wherein: the floating support assembly (5) comprises at least one group of link mechanisms which are sequentially connected, and the flanges (3) are connected with the reinforcing ring (4) through at least one group of link mechanisms.

3. The high pressure linkage expansion joint of claim 2, wherein: each group of link mechanism comprises two symmetrical telescopic rhombic structure units (50), and two ends of each rhombic structure unit (50) are connected with the adjacent flange (3) and the adjacent reinforcing ring (4) or connected with the adjacent two reinforcing rings (4).

4. A high pressure ganged expansion joint as claimed in claim 3, wherein: two rhombus constitutional unit (50) are even board (51) and two long even board (52) by four weak points and are constituteed, the both ends that the board (51) are even to weak point and long even board (52) are equipped with the pinhole respectively, the both ends that the board (52) are even to long are articulated through round pin axle (53) and are equipped with two short even board (51).

5. The high-pressure linkage expansion joint according to claim 4, wherein: the middle position of the long connecting plate (52) is provided with a connecting hole, the long connecting plate penetrates through the connecting hole through a positioning piece (54) to be connected with the reinforcing ring (4), and the short connecting plate (51) penetrates through a pin hole on the short connecting plate through the positioning piece (54) to be connected with the flange (3).

6. The high pressure linkage expansion joint of claim 5, wherein: and the flange (3) and the reinforcing ring (4) are respectively provided with a positioning hole (55) matched with the positioning piece (54).

7. A high pressure ganged expansion joint according to any one of claims 1 to 6, wherein: the reinforcing ring (4) comprises two semicircular ring structures (41), and the two semicircular ring structures (41) are clamped and fastened between the corrugated bulges of the corrugated pipe (1) through a fixing structure (6).

8. The high pressure linkage expansion joint of claim 7, wherein: the fixing structure (6) comprises two bosses (61) which are oppositely arranged on the semicircular ring structure (41) respectively, mounting holes which are correspondingly arranged on the bosses (61), and bolt assemblies (62) which penetrate through the mounting holes and apply fastening force to the two bosses (61).

9. The high-pressure linkage expansion joint according to claim 1, wherein: an outer shell (7) which coats the flange, the corrugated pipe and the floating support component is arranged between the two outer sleeves (2).