CN111810754A - Straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation - Google Patents
Straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation Download PDFInfo
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- CN111810754A CN111810754A CN202010519997.7A CN202010519997A CN111810754A CN 111810754 A CN111810754 A CN 111810754A CN 202010519997 A CN202010519997 A CN 202010519997A CN 111810754 A CN111810754 A CN 111810754A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
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Abstract
A straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation comprises an inlet end pipe assembly, a working corrugated pipe and an outlet end pipe assembly, wherein the inlet end pipe assembly consists of an inlet end pipe and an inlet annular plate fixedly sleeved on the outer side of the inlet end pipe; the pull rod assemblies are arranged in multiple groups along the axial direction of the expansion joint, one end of each group of pull rod assemblies is fixedly connected to the inlet annular plate, and the other end of each group of pull rod assemblies penetrates through the outlet annular plate and then is fixedly connected to the guide plate. The purpose that sets up the balanced subassembly of multiunit along pipeline circumference array equipartition and reach balanced atress possesses structurally to replace the advantage of big pipe diameter balance wave, only needs to set up a set of work bellows in the pipeline to greatly reduced product's the manufacturing degree of difficulty and cost.
Description
Technical Field
The invention belongs to the field of pipeline flexibility compensation, and particularly relates to a straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation.
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. If the pipeline pressure is calculated to be 0.2MPa, the diameter of the balance corrugated pipe reaches 11.3 m for the pipeline with the drift diameter of 8 m, and the blind plate force is 100T; the diameter of the balance corrugated pipe of a pipeline with the drift diameter of 11 meters can reach 15.6 meters, and the blind plate force is 1900T.
Disclosure of Invention
In order to solve the technical problems, the invention provides the straight pipe pressure balance type expansion joint which is applied to the large-diameter pipeline and can be not provided with balance waves, and for the pipeline with the diameter larger than 4 meters, the manufacturing difficulty of the expansion joint can be greatly reduced, and meanwhile, the product cost is reduced.
In order to realize the technical purpose, the adopted technical scheme is as follows: a straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation comprises an inlet end pipe assembly, a working corrugated pipe and an outlet end pipe assembly, wherein the inlet end pipe assembly consists of an inlet end pipe and an inlet annular plate fixedly sleeved on the outer side of the inlet end pipe;
the balance assembly comprises a primary outer pipe, an end ring, a primary peripheral corrugated pipe assembly and a primary sealing plate, the device comprises a primary force transfer part, a guide plate and a pressure connection pipe, wherein one end of a primary outer pipe is connected with an outlet ring plate, the other end of the primary outer pipe is connected with an end ring, the inner side of the end ring is connected with one end of a primary peripheral corrugated pipe assembly sleeved in the primary outer pipe, the other end of the primary peripheral corrugated pipe assembly is connected to a primary sealing plate, the primary sealing plate is connected with a primary force transfer part sleeved in the peripheral corrugated pipe, the axis of the primary force transfer part is consistent with the axis of the peripheral corrugated pipe, the primary force transfer part penetrates through the inner cavity of the end ring and then is connected with the guide plate slidably sleeved on the outer side of the outlet end pipe, the primary outer pipe, the end ring, the primary peripheral corrugated pipe assembly and the primary sealing;
the pull rod assemblies are arranged in multiple groups along the axial direction of the expansion joint, one end of each group of pull rod assemblies is fixedly connected to the inlet annular plate, and the other end of each group of pull rod assemblies penetrates through the outlet annular plate and then is fixedly connected to the guide plate.
A gap is arranged between the primary force transmission element and the end ring.
A gap is arranged between the guide plate and the outlet end pipe.
And a gap is arranged between the end ring and the outlet end pipe.
The utility model provides a be applied to straight tube pressure balance type expansion joint of major diameter pipeline compensation, still include the setting at the second grade compensation arrangement in one-level biography power piece and one-level shrouding enclose into the space, the second grade compensation arrangement includes the second grade outer tube, the second grade shrouding, second grade peripheral hardware bellows subassembly, tertiary shrouding and second grade biography power piece, second grade peripheral hardware bellows subassembly cover is established in the outside of second grade biography power piece, and set up with second grade biography power piece coaxial line, the one end of second grade peripheral hardware bellows subassembly and the inboard fixed connection of end links, the other end of second grade peripheral hardware bellows subassembly is by second grade shrouding sealing connection, the one end of second grade peripheral hardware bellows subassembly is connected the other end with the deflector and is connected with the second grade shrouding, the outside cover of second grade peripheral hardware, And the secondary sealing plate, the tertiary sealing plate, the secondary outer tube and the end ring form a secondary sealing cavity, and the secondary sealing cavity is communicated with the outlet end tube through the pressure communication tube.
The axis of the secondary peripheral corrugated pipe assembly is consistent with the axis of the primary peripheral corrugated pipe assembly.
The invention has the beneficial effects that: the conventional expansion joint structure needs to be provided with a balance wave with a larger pipe diameter, and the difficulty in manufacturing products is high. This patent conversion balance design idea adopts and sets up the little pipe diameter bellows of multiunit along pipeline circumference array equipartition to reach the purpose of balanced atress, possess structurally the advantage of replacing the balanced ripples of big pipe diameter, only need set up a set of work bellows in the pipeline, thereby the manufacturing degree of difficulty and the cost of greatly reduced product. Meanwhile, when the compensation device is applied to compensation of an ultra-large diameter pipeline, a secondary compensation device can be added in the primary force transmission piece, a working corrugated pipe does not need to be added, further ultra-large compensation can be achieved, the structure of the compensation device is similar to that of the compensation device on the outer side, and additional design is not needed.
Drawings
FIG. 1 is a schematic structural diagram of a straight pipe pressure balanced expansion joint of the prior art;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a view of the structure of the portion A of FIG. 2;
FIG. 4 is another schematic structural view of the present invention;
in the figure: 1. inlet end pipe assembly, 2, draft tube, 3, working corrugated pipe, 4, pull rod, 5, outlet end pipe assembly, 6, primary sealing plate, 7, primary outer pipe, 8, secondary external corrugated pipe section, 9, external corrugated pipe, 10, primary force transmission piece, 11, end ring, 12, pressure connection pipe, 13, guide plate, 14, pull rod nut, 15, first external corrugated pipe section, 16, secondary outer pipe, 17, secondary sealing plate, 18, secondary external corrugated pipe assembly, 19, tertiary sealing plate, 20, secondary force transmission piece, 1-1 inlet end pipe, 1-2 inlet ring plate, 5-1 outlet end pipe, 5-2 outlet ring plate.
Detailed Description
In the description of the present embodiment, the terms "inside", "outside", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "primary," "secondary," and "tertiary" are used merely to distinguish between similar items and are not to be construed as requiring a particular order or sequence, it being understood that such use is interchangeable under appropriate circumstances.
As shown in figure 2, the straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation comprises an inlet end pipe assembly 1, a working corrugated pipe 3 and an outlet end pipe assembly 5, wherein the inlet end pipe assembly 1 consists of an inlet end pipe 1-1 and an inlet ring plate 1-2 fixedly sleeved on the outer side of the inlet end pipe 1-1, the inlet ring plate 1-2 is welded on the inlet end pipe 1-1, the inlet end pipe 1-1 is axially arranged, the inlet ring plate 1-2 is circumferentially welded along the radial direction, a mounting hole for a pull rod 4 to pass through is arranged on the inlet ring plate 1-1, the outlet end pipe assembly 5 consists of an outlet end pipe 5-1 and an outlet ring plate 5-2 fixedly sleeved on the outer side of the outlet end pipe 5-1, the outlet ring plate 5-2 is welded on the outlet end pipe 5-1, the outlet end pipe 5-1 is coaxially arranged with the inlet end pipe 1-1, the two are equal in diameter, the outlet annular plate 5-2 and the inlet annular plate 1-2 are arranged in parallel, through holes for the pull rod 4 to penetrate through are formed in the outlet annular plate 5-2, the size of each through hole cannot influence the movement of the outlet annular plate 5-2 on the pull rod 4, only one group of working corrugated pipes 3 is arranged, two ends of each working corrugated pipe 3 are respectively connected with an inlet end pipe 1-1 and an outlet end pipe 5-1, a guide cylinder 2 is arranged on the inner side of each working corrugated pipe 3, one end of each guide cylinder 2 is connected with the inner side of the inlet end pipe 1-1, the other end of each guide cylinder 2 extends to the inner side of the outlet end pipe 5-1, a gap is formed between each guide cylinder and the outlet end pipe 5-1, and N groups of balance assemblies and pull rod assemblies are arranged in the circumferential direction of.
The balance assembly comprises a primary outer pipe 7, an end ring 11, a primary peripheral corrugated pipe assembly, a primary seal plate 6, a primary force transfer element 10, a guide plate 13 and a pressure connecting pipe 12, one end of the primary outer pipe 7 is connected with an outlet ring plate 5-2, the lower side of the primary outer pipe 7 is not contacted with the outlet end pipe 5-1 and can not be subjected to the force brought by the outlet end pipe 5-1, the other end of the primary outer pipe 7 is connected with the end ring 11 which is a whole ring plate, each primary outer pipe can be connected on the same end ring 11, the inner side of the end ring 11 is connected with the primary peripheral corrugated pipe assembly sleeved in the primary outer pipe 7, the other end of the primary peripheral corrugated pipe assembly is connected on the primary seal plate 6 and is sealed by the primary seal plate 6, and the primary peripheral corrugated pipe comprises a first peripheral corrugated pipe cylindrical section 15, a peripheral corrugated pipe 9, the first external corrugated pipe cylinder section 15 is connected with an end ring 11 by welding, the second external corrugated pipe cylinder section 8 is welded with a primary sealing plate 6 by welding, the end part of the second external corrugated pipe cylinder section 8 is sealed, the primary sealing plate 6 is connected with a primary force transmission piece 10 sleeved in an external corrugated pipe 9, the axis of the primary force transmission piece 10 is consistent with the axis of the external corrugated pipe 9, the primary force transmission piece 10 penetrates through the inner cavity of the end ring 11 and then is connected with a guide plate 13 slidably sleeved on the outer side of an outlet end pipe 5-1, the guide plate 13 and the outlet ring plate 5-2 are mutually balanced, one guide plate 13 is in an annular structure and is sleeved on the outlet end pipe 5-1, the primary outer pipe 7, the end ring 11, the primary peripheral corrugated pipe assembly and the primary seal plate 6 are turned into a seal cavity, and two ends of the pressure connecting pipe 12 are respectively communicated with the seal cavity and the outlet end pipe 5-1.
As shown in fig. 2 and 3, a plurality of tie rod assemblies are arranged along the axial direction of the expansion joint, one end of each tie rod assembly is fixedly connected to the inlet ring plate 1-2, and the other end of each tie rod assembly passes through the outlet ring plate 5-2 and is fixedly connected to the guide plate 13. The pull rod assembly consists of a pull rod 4 and a pull rod nut 14, wherein the two ends of the pull rod are fixed, and the pull rod nut is sleeved on the pull rod and is fastened on the two sides of the pull rod to fix the two ends of the pull rod. The distance between the inlet ring plate 1-2 and the guide plate 13 is constant, whether during compression or during stretching.
The effective area of the working corrugated pipe is the effective area of a single external corrugated pipeIs/are as followsNThe 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.
A gap is arranged between the primary force transmission element 10 and the end ring 11, so that friction between the primary force transmission element and the end ring 11 is prevented.
A gap is formed between the guide plate and the outlet end pipe 5-1, so that the guide plate 13 is prevented from rubbing the outlet end pipe 5-1 to influence the expansion of the expansion joint.
A gap is arranged between the end ring 11 and the outlet end pipe 5-1.
As shown in fig. 4, a straight pipe pressure balance type expansion joint applied to large diameter pipe compensation can be applied to compensation application of ultra large pipe diameter, such as pipe with diameter larger than 10 m, in order to generate larger balance area. The expansion joint also comprises a secondary compensation device in a space enclosed by a primary force transmission piece 10 and a primary seal plate 6, the secondary compensation device comprises a secondary outer pipe 16, a secondary seal plate 17, a secondary external corrugated pipe assembly 18, a tertiary seal plate 19 and a secondary force transmission piece 20, the secondary external corrugated pipe assembly 18 also comprises a corrugated pipe and a cylinder section welded at two ends of the corrugated pipe, the secondary external corrugated pipe assembly 18 is sleeved at the outer side of the secondary force transmission piece 20 and is coaxially arranged with the secondary force transmission piece 20, one end of the secondary external corrugated pipe assembly 18 is fixedly connected with the inner side of the end ring 11, the other end of the secondary external corrugated pipe assembly 18 is hermetically connected with the secondary seal plate 17, one end of the secondary force transmission piece 20 is connected with the guide plate 13 and the other end is connected with the secondary seal plate 17, the secondary outer pipe 16 is sleeved at the outer side of the secondary external corrugated pipe assembly 18, one end of, the secondary peripheral corrugated pipe assembly 18, the secondary seal plate 17, the tertiary seal plate 19, the secondary outer pipe 16 and the end ring 11 enclose a secondary seal cavity, and the secondary seal cavity is communicated with the outlet end pipe 5-1 through the pressure connecting pipe 12, so that the pressures of the two seal cavities are consistent.
At this time, the effective area of the working bellows is the effective area of the two external bellowsNThe number of times of the total number of the parts,Nthe number of groups of the peripheral corrugated pipes is distributed on the periphery, and the effective area of the two peripheral corrugated pipes is the sum of the effective areas of the two nested peripheral corrugated pipes.
The axis of the secondary peripheral bellows assembly 18 coincides with the axis of the primary peripheral bellows assembly.
When only one-level peripheral corrugated pipe exists, the one-level force transmission piece can be connected in a structural form of a force transmission cylinder, when two-level nested peripheral corrugated pipes exist, the one-level force transmission piece can be connected in a structural form of a force transmission rod, the force transmission rod is provided with a plurality of force transmission supports, the end ring 11 is provided with a hole for the force transmission rod to pass through, and the two-level force transmission piece can be connected in a structural form of the force transmission rod.
Claims (6)
1. A straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation comprises an inlet end pipe assembly (1), a working corrugated pipe (3) and an outlet end pipe assembly (5), wherein the inlet end pipe assembly (1) consists of an inlet end pipe (1-1) and an inlet annular plate (1-2) fixedly sleeved on the outer side of the inlet end pipe (1-1), the outlet end pipe assembly (5) consists of an outlet end pipe (5-1) and an outlet annular plate (5-2) fixedly sleeved on the outer side of the outlet end pipe (5-1), two ends of the working corrugated pipe (3) are respectively connected with the inlet end pipe (1-1) and the outlet end pipe (5-1), a guide cylinder (2) is arranged on the inner side of the working corrugated pipe (3), one end of the guide cylinder (2) is connected with the inner side of the inlet end pipe (1-1), and the other end of the guide cylinder (2) extends to the inner side of the outlet end pipe (5-1), and a gap is arranged between the outlet end pipe (5-1), and the device is characterized in that: n groups of balance assemblies and pull rod assemblies are arranged along the outer circumferential direction of the outlet end pipe (5-1);
the balance assembly comprises a primary outer pipe (7), an end ring (11), a primary peripheral corrugated pipe assembly, a primary sealing plate (6), a primary force transmission part (10), a guide plate (13) and a pressure communication pipe (12), wherein one end of the primary outer pipe (7) is connected with an outlet ring plate (5-2), the other end of the primary outer pipe (7) is connected with the end ring (11), one end of the primary peripheral corrugated pipe assembly sleeved in the primary outer pipe (7) is connected to the inner side of the end ring (11), the other end of the primary peripheral corrugated pipe assembly is connected to the primary sealing plate (6), the primary sealing plate (6) is connected with the primary force transmission part (10) sleeved in the peripheral corrugated pipe (9), the axis of the primary force transmission part (10) is consistent with the axis of the peripheral corrugated pipe (9), the primary force transmission part (10) penetrates through the inner cavity of the end ring (11) and then is connected with the guide plate (13) sleeved outside the slidable outlet end, the primary outer pipe (7), the end ring (11), the primary peripheral corrugated pipe assembly and the primary sealing plate (6) are turned into a sealing cavity, and two ends of the pressure connecting pipe (12) are respectively communicated with the sealing cavity and the outlet end pipe (5-1);
the pull rod assemblies are arranged in multiple groups along the axial direction of the expansion joint, one end of each group of pull rod assemblies is fixedly connected to the inlet annular plate (1-2), and the other end of each group of pull rod assemblies penetrates through the outlet annular plate (5-2) and then is fixedly connected to the guide plate (13).
2. A straight pipe pressure balanced expansion joint for large diameter pipe compensation as claimed in claim 1 wherein: a gap is arranged between the primary force transmission piece (10) and the end ring (11).
3. A straight pipe pressure balanced expansion joint for large diameter pipe compensation as claimed in claim 1 wherein: a gap is arranged between the guide plate and the outlet end pipe (5-1).
4. A straight pipe pressure balanced expansion joint for large diameter pipe compensation as claimed in claim 1 wherein: a gap is arranged between the end ring (11) and the outlet end pipe (5-1).
5. A straight pipe pressure balanced expansion joint for large diameter pipe compensation as claimed in claim 1 wherein: the device also comprises a secondary compensation device arranged in a space enclosed by the primary force transmission piece (10) and the primary sealing plate (6), the secondary compensation device comprises a secondary outer pipe (16), a secondary sealing plate (17), a secondary peripheral corrugated pipe assembly (18), a tertiary sealing plate (19) and a secondary force transmission piece (20), the secondary peripheral corrugated pipe assembly (18) is sleeved on the outer side of the secondary force transmission piece (20) and is coaxially arranged with the secondary force transmission piece (20), one end of the secondary peripheral corrugated pipe assembly (18) is fixedly connected with the inner side of the end ring (11), the other end of the secondary peripheral corrugated pipe assembly (18) is hermetically connected with the secondary sealing plate (17), one end of the secondary force transmission piece (20) is connected with the guide plate (13) and is connected with the secondary sealing plate (17), the outer pipe (16) is sleeved on the outer side of the secondary peripheral corrugated pipe assembly (18), one end of the secondary outer pipe (16) is hermetically connected with the inner side of the end ring (11) and, the secondary peripheral corrugated pipe assembly (18), the secondary sealing plate (17), the tertiary sealing plate (19), the secondary outer pipe (16) and the end ring (11) enclose a secondary sealing cavity, and the secondary sealing cavity is communicated with the outlet end pipe (5-1) through the pressure connecting pipe (12).
6. A straight pipe pressure balanced expansion joint for large diameter pipe compensation as claimed in claim 1 wherein: the axis of the secondary peripheral bellows assembly (18) is coincident with the axis of the primary peripheral bellows assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010519997.7A CN111810754B (en) | 2020-06-09 | 2020-06-09 | Straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010519997.7A CN111810754B (en) | 2020-06-09 | 2020-06-09 | Straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation |
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| Publication Number | Publication Date |
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| CN111810754A true CN111810754A (en) | 2020-10-23 |
| CN111810754B CN111810754B (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010519997.7A Active CN111810754B (en) | 2020-06-09 | 2020-06-09 | Straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1344998A (en) * | 1970-12-04 | 1974-01-23 | Andre Rubber Co | Expansion joints for pipes |
| CN2767807Y (en) * | 2004-06-07 | 2006-03-29 | 蒋新锋 | Straight-through lateral balance non-thrust corrugated expansion joint |
| CN201715169U (en) * | 2010-07-21 | 2011-01-19 | 秦皇岛北方管业有限公司 | External-compression composite balanced-type expansion joint |
| CN203176620U (en) * | 2013-01-30 | 2013-09-04 | 航天晨光股份有限公司 | Flexible connection pipe |
| CN203442401U (en) * | 2013-06-08 | 2014-02-19 | 洛阳双瑞特种装备有限公司 | Expansion joint with jacket heat tracing structure |
-
2020
- 2020-06-09 CN CN202010519997.7A patent/CN111810754B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1344998A (en) * | 1970-12-04 | 1974-01-23 | Andre Rubber Co | Expansion joints for pipes |
| CN2767807Y (en) * | 2004-06-07 | 2006-03-29 | 蒋新锋 | Straight-through lateral balance non-thrust corrugated expansion joint |
| CN201715169U (en) * | 2010-07-21 | 2011-01-19 | 秦皇岛北方管业有限公司 | External-compression composite balanced-type expansion joint |
| CN203176620U (en) * | 2013-01-30 | 2013-09-04 | 航天晨光股份有限公司 | Flexible connection pipe |
| CN203442401U (en) * | 2013-06-08 | 2014-02-19 | 洛阳双瑞特种装备有限公司 | Expansion joint with jacket heat tracing structure |
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| CN111810754B (en) | 2022-09-30 |
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