CN213177256U - Large-diameter straight pipe pressure balance type expansion joint balanced by external internal pressure corrugated pipe - Google Patents
Large-diameter straight pipe pressure balance type expansion joint balanced by external internal pressure corrugated pipe Download PDFInfo
- Publication number
- CN213177256U CN213177256U CN202021647895.5U CN202021647895U CN213177256U CN 213177256 U CN213177256 U CN 213177256U CN 202021647895 U CN202021647895 U CN 202021647895U CN 213177256 U CN213177256 U CN 213177256U
- Authority
- CN
- China
- Prior art keywords
- pipe
- end pipe
- pressure
- corrugated pipe
- pull rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Joints Allowing Movement (AREA)
Abstract
The large-diameter straight pipe pressure balance type expansion joint balanced by an external internal pressure corrugated pipe comprises an internal pressure balance compensation assembly, a working corrugated pipe, end pipes and pull rod assemblies, wherein two axial ends of the working corrugated pipe are respectively connected with one end pipe, and the pull rod assemblies are circumferentially arranged on the outer sides of the end pipes; the end pipe circumference outside that a plurality of interior pressure balance compensation subassemblies set up in the end pipe circumference outside of unilateral or both sides, every interior pressure balance compensation body is equipped with by interior pressure bellows, take over, the interior pressure chamber that is linked together with the end pipe that deflector and end pipe subassembly enclose, the both ends of interior pressure bellows are connected respectively on deflector and end pipe subassembly through taking over, the direction setting that the work bellows was pressed close to the end pipe subassembly is fixed on the end pipe, the deflector keep away from work bellows setting and with the end pipe between be equipped with the clearance, the straight tube pressure balance type expansion joint that can not establish the balance wave that this expansion joint was applied to major diameter pipeline, can reduce the prison of expansion joint by a wide margin and build the degree of difficulty, reduce product cost simultaneously.
Description
Technical Field
The utility model relates to an expansion joint technical field, what specifically say so adopts the balanced major diameter straight tube pressure balance type expansion joint of external pressure bellows.
Background
The straight pipe pressure balance type expansion joint can be used for compensating axial displacement of a pipeline, a structural member is adopted to restrain blind plate force of the pipeline, no blind plate force is output to a pipe opening and a support, and the whole structure is shown in figure 1. The straight pipe pressure balance type expansion joint applied to a conventional pipeline (the diameter is less than 4 meters) generally comprises two groups of working corrugated pipes, a group of balance corrugated pipes and other stressed structural members, the diameter of a balance wave is 1.414 times of that of the working wave, a plurality of groups of pull rods realize the transmission of the balance force, one end of each pull rod is respectively connected with an end pipe assembly, and the other end of each pull rod is connected with a middle pipe assembly.
For the expansion joint compensation application with larger pipe diameter, the design and the manufacture of the straight pipe pressure balance type expansion joint have difficulty. On the one hand, the huge blind plate force of the pipeline brings challenges to the design of the structural member, and on the other hand, the diameter of the required balance corrugated pipe is further increased, and the manufacturing difficulty of the balance corrugated pipe is greatly increased. For a 13 meter diameter pipeline, the balance corrugated pipe diameter will reach 18.4 meters and the blind force will reach 5315T, as calculated by the pipeline pressure of 0.2 MPa.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an adopt balanced major diameter straight tube pressure balance type expansion joint of pressure bellows in the peripheral hardware, be applied to the straight tube pressure balance type expansion joint that can not establish the balance wave of major diameter pipeline, the degree of difficulty is made in the prison that can reduce the expansion joint by a wide margin, reduces product cost simultaneously.
In order to realize the technical purpose, the adopted technical scheme is as follows: the large-diameter straight pipe pressure balance type expansion joint balanced by an external internal pressure corrugated pipe comprises an internal pressure balance compensation assembly, a working corrugated pipe, end pipes and pull rod assemblies, wherein two axial ends of the working corrugated pipe are respectively connected with one end pipe, and the pull rod assemblies are circumferentially arranged on the outer sides of the end pipes;
it is a plurality of interior pressure balance compensation assembly set up in the end pipe circumference outside of unilateral or the end pipe circumference outside of both sides, every interior pressure balance compensation body is equipped with by interior pressure bellows, take over, the interior pressure chamber that is linked together with the end pipe that deflector and end pipe subassembly enclose, the both ends of interior pressure bellows are connected respectively on deflector and end pipe subassembly through taking over, the direction setting that the work bellows is pressed close to the end pipe subassembly is fixed on the end pipe, the deflector keep away from the work bellows setting and with be equipped with the clearance between the end pipe, be connected with pull rod assembly's one end on the deflector, pull rod assembly's the other end passes the end pipe subassembly of homonymy and is connected with the end pipe subassembly on the opposite side end pipe.
The inner pressure cavity is also internally provided with an expansion compensation body, the expansion compensation body consists of an outer pressure corrugated pipe and a connecting pipe, the two ends of the outer pressure corrugated pipe are respectively connected to the guide plate and the end pipe assembly through the connecting pipe, and the axial direction of the outer pressure corrugated pipe is consistent with that of the inner pressure cavity.
The axial direction of the pull rod assembly is consistent with the axial direction of the external pressure corrugated pipe.
The utility model has the advantages that:
1. the external equipartition multiunit tubule footpath along the pipeline circumference is pressed the bellows and is replaced balanced ripples in, only needs to set up a set of work bellows in the pipeline, has reduced product cost, compares traditional scheme, and the manufacturing degree of difficulty of greatly reduced product has improved construction manufacturability, adopts multiunit peripheral hardware tubule footpath balanced structure simultaneously, and the maintenance and the change of the every unit in the later stage of being convenient for wholly promote the reliability of product.
2. The peripheral corrugated pipe assembly who arranges along the circumferencial direction sets up in work bellows both sides, can produce bigger balance area, can be applied to the compensation of super large pipe diameter and use, if the peripheral corrugated pipe assembly number that the unilateral was arranged is N, at the internal pressure balance compensation subassembly increase the extension compensation body, both sides can expand to 2N, the peripheral corrugated pipe assembly number that both sides were arranged simultaneously also can not be equal, the effective area of preceding work bellows equals with the total area of peripheral corrugated pipe, the balance of pipeline pressure thrust can be realized to whole expansion joint.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic structural view of embodiment 1;
FIG. 3 is a schematic structural view of example 2;
FIG. 4 is a side view of the structure of FIG. 3;
FIG. 5 is a schematic structural view of example 3;
FIG. 6 is a schematic structural view of example 4;
FIG. 7 is a side view of the structure of FIG. 6;
in the figure: 1. the device comprises an end pipe assembly I, an end pipe assembly II, an inner pressure corrugated pipe assembly II, an outer pressure corrugated pipe assembly II, an end pipe assembly II, an outer pressure corrugated pipe assembly II, a guide plate II, a pull rod nut, a pressure connecting pipe, a guide plate II, a guide plate.
Detailed Description
The large-diameter straight pipe pressure balance type expansion joint adopting external internal pressure corrugated pipes for balance comprises internal pressure balance compensation assemblies, working corrugated pipes, end pipes and pull rod assemblies, and has a structure which is greatly different from that of a conventional pipeline straight pipe pressure balance type expansion joint, the whole structure is shown in figure 2.
Two axial ends of the working corrugated pipe are respectively connected with an end pipe, and a pull rod assembly is circumferentially arranged on the outer side of the end pipe; the large-diameter straight pipe pressure balance type expansion joint balanced by the external internal pressure corrugated pipe is feasible except for adopting a single working wave form, and internal or external added components are feasible.
The internal pressure balance compensation components are arranged on the circumferential outer side of one end pipe or the circumferential outer sides of the end pipes on two sides, namely one arrangement mode of the internal pressure balance compensation components is that the internal pressure balance compensation components are arranged on the circumferential outer side of one end pipe or the internal pressure balance compensation components are respectively arranged on the circumferential outer sides of the two end pipes, the internal pressure balance compensation components outside the two end pipes can be arranged in equal quantity or unequal quantity or can be symmetrically arranged or staggered, each internal pressure balance compensation body is provided with an internal pressure cavity which is enclosed by an internal pressure corrugated pipe, a connecting pipe, a guide plate and an end pipe component and is communicated with the end pipe, two ends of the internal pressure corrugated pipe are respectively connected to the guide plate and the end pipe component through the connecting pipe, the end pipe component is arranged close to the direction of the working corrugated pipe and is fixed on the end pipe, the guide plate is far away from the working corrugated pipe and is provided with a gap between, one end of a pull rod assembly is connected to the guide plate, and the other end of the pull rod assembly penetrates through the end pipe assembly on the same side to be connected with the end pipe assembly on the end pipe on the other side.
The inner pressure cavity is also internally provided with an expansion compensation body, the expansion compensation body consists of an outer pressure corrugated pipe and a connecting pipe, the two ends of the outer pressure corrugated pipe are respectively connected to the guide plate and the end pipe assembly through the connecting pipe, and the axial direction of the outer pressure corrugated pipe is consistent with that of the inner pressure cavity.
The axial direction of the pull rod assembly is consistent with the axial direction of the external pressure corrugated pipe, and the arrangement mode can reduce the force arm of the pull rod.
Example 1
As shown in fig. 2, the large-diameter straight pipe pressure balance type expansion joint balanced by the external internal pressure corrugated pipe is composed of a first end pipe assembly 1, a guide cylinder 2, a working corrugated pipe 3, a pull rod 4, a second end pipe assembly 5, an internal pressure corrugated pipe connecting pipe 6, an internal pressure corrugated pipe 7, a pull rod nut 10, a second guide plate 9 and a pressure connecting pipe 11.
The end pipe assembly I1 is welded on the end pipe at the left end, the end pipe assembly II is welded on the end pipe at the right end, the guide plate II 9 is sleeved on the end pipe and is not fixedly connected with the end pipe, a gap is arranged between the guide plate II and the end pipe, two ends of the internal pressure corrugated pipe 7 are respectively connected with internal pressure corrugated pipe connecting pipes 6, and the internal pressure corrugated pipe connecting pipes 6 at two sides are respectively connected with the internal pressure corrugated pipe connecting pipes 6 at two sidesThe end pipe assembly II 5 is in sealing connection with the guide plate II 9, the enclosed internal pressure cavity is communicated with the end pipe through a pressure connecting pipe 11, one end of the pull rod 4 is connected with the end pipe assembly I1, a pull rod hole is formed in the end pipe assembly II 5, the pull rod 4 penetrates through the end pipe assembly II 5, and the other end of the pull rod is connected with the guide plate II 9. The whole structure only has one group of working corrugated pipes, the plurality of groups of peripheral corrugated pipes uniformly distributed along the circumference play the role of balance waves, and the effective area of the working corrugated pipe is the effective area of a single peripheral corrugated pipeNThe number of times of the total number of the parts,Nthe groups are distributed on the circumference of the external corrugated pipe. Overall structure only needs to set up a set of work bellows, has reduced bellows material's use amount, has reduced product cost, replaces the balanced bellows shop of bigger pipe diameter with the multiunit minor diameter bellows simultaneously, in major diameter or even super large diameter pipeline is used, can reduce the manufacturing degree of difficulty of product by a wide margin. In addition, the design structure of the product also has the characteristics of small required installation length and small overall rigidity of the expansion joint.
Example 2
As shown in fig. 3 and 4, the large-diameter straight pipe pressure balance type expansion joint balanced by the external internal pressure corrugated pipe is adopted, the internal pressure balance compensation components arranged along the circumferential direction are arranged on two sides of the working corrugated pipe, a larger balance area can be generated, the expansion joint can be applied to compensation application of an ultra-large pipe diameter, if the number of the internal pressure balance compensation components arranged on one side is N, two sides can be expanded to 2N, meanwhile, the number of the internal pressure balance compensation components arranged on two sides can also be unequal, the effective area of the previous working corrugated pipe is equal to the total area of the external corrugated pipe, and the balance of the thrust of the pipeline pressure can be realized by the whole expansion joint.
Example 3
As shown in fig. 5, in order to reduce the force arm of stress (the distance from the pull rod hole to the pipeline) of the end pipe assembly 1 in fig. 2, thereby reducing the bending stress and the deformation deflection of the welding seam at the root of the end pipe assembly, optimizing the stress state, the pull rod corrugated pipe is arranged in the external corrugated pipe, which plays the roles of medium sealing and pull rod isolation, bearing the external medium pressure, and the axes of the external corrugated pipe, the pull rod corrugated pipe and the pull rod are coaxial, so that the force arm of bending of the pull rod force to the end pipe assembly 1 can be integrally reduced, thereby optimizing the stress state and the structural deformation, and reducing the material consumption.
The main structure of example 3 is the same as example 1, except that: an external pressure corrugated pipe 12 is arranged in the internal pressure corrugated pipe, two ends of the external pressure corrugated pipe 12 are connected to a second end pipe assembly 5 and a second guide plate 9 through an external pressure corrugated pipe connecting pipe 8 respectively, one end of a pull rod 4 is fixed to the second end pipe assembly 1, and the pull rod penetrates through the centers of the second end pipe assembly and the external pressure corrugated pipe 12 and then is fixed to the second guide plate 9.
Example 4
As shown in fig. 6 and 7, the large-diameter straight pipe pressure balance type expansion joint balanced by external internal pressure bellows is adopted, the external bellows assemblies arranged along the circumferential direction are arranged on two sides of the working bellows, a larger balance area can be generated, the expansion joint can be applied to compensation application of an ultra-large pipe diameter, if the number of the external bellows assemblies arranged on one side is N, two sides can be expanded to 2N, meanwhile, the number of the external bellows assemblies arranged on two sides can also be unequal, the effective area of the working bellows is equal to the total area of the external bellows in the prior art, and the balance of the thrust of the pipeline pressure can be realized by the whole expansion joint.
The pull rod corrugated pipe is arranged in the peripheral corrugated pipe, plays the roles of medium sealing and pull rod isolation, bears the external pressure of a medium, and is coaxial with the axis of the peripheral corrugated pipe, the pull rod corrugated pipe and the pull rod, so that the bending force arm of the pull rod force to the end pipe assembly I and the end pipe assembly II can be integrally reduced, the stress state and the structural deformation of the end pipe assembly I and the end pipe assembly II are optimized, and the material consumption is reduced.
The main structure of example 4 is the same as example 2, except that: an outer pressure corrugated pipe 12 is arranged in the inner pressure corrugated pipe, two ends of the left outer pressure corrugated pipe 12 are connected to a first end pipe assembly 5 and a second guide plate 9 through outer pressure corrugated pipe connecting pipes 8 respectively, two ends of the right outer pressure corrugated pipe 12 are connected to a first end pipe assembly 1 and a first guide plate 13 through outer pressure corrugated pipe connecting pipes 8 respectively, pull rod holes are formed in the first end pipe assembly 1 and the second end pipe assembly 5, one end of a first pull rod 4-1 is fixed to the first guide plate 13, the first pull rod 4-2 penetrates through the center of the left outer pressure corrugated pipe 12 and the first end pipe assembly 1 and then is fixed to the second end pipe assembly 5, one end of the pull rod 4-2 is fixed to the second guide plate 9, and the second pull rod 4-2 penetrates through the center of the left outer pressure corrugated pipe 12 and the second end pipe assembly 5 and.
Claims (3)
1. Adopt the balanced major diameter straight tube pressure balance type expansion joint of external pressure bellows, its characterized in that: the corrugated pipe comprises an internal pressure balance compensation assembly, a working corrugated pipe, end pipes and pull rod assemblies, wherein two axial ends of the working corrugated pipe are respectively connected with one end pipe, and the pull rod assemblies are circumferentially arranged on the outer sides of the end pipes;
it is a plurality of interior pressure balance compensation assembly set up in the end pipe circumference outside of unilateral or the end pipe circumference outside of both sides, every interior pressure balance compensation body is equipped with by interior pressure bellows, take over, the interior pressure chamber that is linked together with the end pipe that deflector and end pipe subassembly enclose, the both ends of interior pressure bellows are connected respectively on deflector and end pipe subassembly through taking over, the direction setting that the work bellows is pressed close to the end pipe subassembly is fixed on the end pipe, the deflector keep away from the work bellows setting and with be equipped with the clearance between the end pipe, be connected with pull rod assembly's one end on the deflector, pull rod assembly's the other end passes the end pipe subassembly of homonymy and is connected with the end pipe subassembly on the opposite side end pipe.
2. The large-diameter straight pipe pressure-balanced expansion joint balanced by an external internal pressure corrugated pipe as claimed in claim 1, wherein: the inner pressure cavity is also internally provided with an expansion compensation body, the expansion compensation body consists of an outer pressure corrugated pipe and a connecting pipe, the two ends of the outer pressure corrugated pipe are respectively connected to the guide plate and the end pipe assembly through the connecting pipe, and the axial direction of the outer pressure corrugated pipe is consistent with that of the inner pressure cavity.
3. The large-diameter straight pipe pressure-balanced expansion joint balanced by an external internal pressure corrugated pipe as claimed in claim 2, wherein: the axial direction of the pull rod assembly is consistent with the axial direction of the external pressure corrugated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021647895.5U CN213177256U (en) | 2020-08-10 | 2020-08-10 | Large-diameter straight pipe pressure balance type expansion joint balanced by external internal pressure corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021647895.5U CN213177256U (en) | 2020-08-10 | 2020-08-10 | Large-diameter straight pipe pressure balance type expansion joint balanced by external internal pressure corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213177256U true CN213177256U (en) | 2021-05-11 |
Family
ID=75799891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021647895.5U Active CN213177256U (en) | 2020-08-10 | 2020-08-10 | Large-diameter straight pipe pressure balance type expansion joint balanced by external internal pressure corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213177256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046065A (en) * | 2022-06-01 | 2022-09-13 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type bellows expansion joint with distributing type floating structure |
-
2020
- 2020-08-10 CN CN202021647895.5U patent/CN213177256U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046065A (en) * | 2022-06-01 | 2022-09-13 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type bellows expansion joint with distributing type floating structure |
| CN115046065B (en) * | 2022-06-01 | 2024-01-19 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type corrugated pipe expansion joint with distributed floating structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213177256U (en) | Large-diameter straight pipe pressure balance type expansion joint balanced by external internal pressure corrugated pipe | |
| AU2020373193A1 (en) | Construction tube | |
| CN111503390B (en) | Pressure balance type bellows expansion joint | |
| CN108468895A (en) | A kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation | |
| CN103899667A (en) | Novel combined type bidirectional flexible diaphragm coupling with tubular long shaft and method for manufacturing novel combined type bidirectional flexible diaphragm coupling with tubular long shaft | |
| CN212776203U (en) | Large-diameter straight pipe pressure balance type expansion joint balanced by external pressure corrugated pipe | |
| CN217301970U (en) | Thin-wall corrugated pipe column instability resisting auxiliary device | |
| CN111963808A (en) | Large-diameter straight pipe pressure balance type expansion joint balanced by external pressure corrugated pipe | |
| CN212776202U (en) | Straight pipe pressure balance type expansion joint capable of reducing bending moment stress of structural member | |
| CN111810754B (en) | Straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation | |
| CN108361464B (en) | Pressure balance type expansion joint based on end face sliding seal compensation technology | |
| CN212430073U (en) | Pressure balance type bellows expansion joint | |
| CN114108859B (en) | Tension-compression type grid reinforced viscoelastic damper | |
| CN209705519U (en) | A kind of pressure self-balancing type expansion joint | |
| CN205678339U (en) | A kind of outer pressure axial type expansion joint of interior reinforcement | |
| CN210531832U (en) | Improved single type angular displacement compensation device | |
| CN220910798U (en) | Cavity type corrugated pipe compensator | |
| CN207740616U (en) | A kind of multidirectional spacing compensator of external pressure | |
| CN217382140U (en) | Straight pipe pressure balance type expansion joint with floating structure | |
| CN105673981B (en) | Resistance-free balanced-type ripple compensator | |
| CN111828762A (en) | Nylon tube assembly with flow dividing structure | |
| CN117948478A (en) | Cavity type corrugated pipe compensator | |
| CN213361490U (en) | Axial corrugated expansion joint | |
| CN218543578U (en) | Low flow resistance pressure balance expansion joint combined by corrugated pipe and sleeve compensator | |
| CN215721521U (en) | Combined corrugated pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |