CN211259994U - Large-size high-pressure pipeline compensator based on spherical pressure bearing principle - Google Patents
Large-size high-pressure pipeline compensator based on spherical pressure bearing principle Download PDFInfo
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- CN211259994U CN211259994U CN201921644910.8U CN201921644910U CN211259994U CN 211259994 U CN211259994 U CN 211259994U CN 201921644910 U CN201921644910 U CN 201921644910U CN 211259994 U CN211259994 U CN 211259994U
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Abstract
A large-size high-pressure pipeline compensator based on a spherical pressure bearing principle comprises: the device comprises a front lining barrel, a rear lining barrel, an S-shaped armored corrugated pipe, a triangular base, a separation structure, a limiting structure and a balance pull rod; the triangular base and the separation structure are fixedly connected through an S-shaped armored corrugated pipe. The inside of the S-shaped armor corrugated pipe is provided with a front lining cylinder and a rear lining cylinder which are overlapped through spherical surface connecting parts which are overlapped in the circumferential direction. Orifices for balancing air pressure are uniformly distributed on the circumferential direction of the cylinder walls of the front lining cylinder and the rear lining cylinder, the separation structure and the limiting structure are connected through a spherical pair, and the triangular base and the limiting structure are fixedly connected through a plurality of balance pull rods uniformly distributed in the circumferential direction. The utility model discloses widen the application of compensator in high-pressure major diameter pipeline, by a wide margin improved the bearing capacity of compensator.
Description
Technical Field
The utility model relates to a jumbo size high-pressure line compensator based on sphere pressure-bearing principle belongs to heating power pipeline system technical field.
Background
With the increase of the thrust of the heavy liquid rocket engine, the pipeline pressure is correspondingly and greatly increased. If the hard tube solution is still adopted, the stress level of the conduit is higher or more deformation space is needed, which causes the reduction of the reliability and the use and maintenance of the engine, and the problems are generally avoided by arranging a high-pressure compensator. The high-pressure compensator generally comprises a corrugated pipe, an inner lining cylinder and a thrust balancing device, and the corrugated pipe, the inner lining cylinder and the thrust balancing device respectively correspond to the compensation property, the flow guiding property and the pressure bearing property of the compensator. When the compensator works, the pressure thrust of dozens of tons or even higher acts on the balancing device, and the damage and failure are easily caused, so the pressure bearing design of the compensator is very important.
The design schemes of the compensator commonly used at present are as follows: an inner hinge type compensator and an outer hinge universal joint type compensator as shown in fig. 8. Both compensators have disadvantages: 1) the inner hinge type compensator bears tension through the tripod or the joint bearing arranged inside the corrugated pipe, the diameter of the corrugated pipe is enlarged, the pressure thrust is obviously higher than that of an outer hinge type, the balancing device works in a pipeline medium, the flow resistance loss is large, the reliability is not high, the use and maintenance performance is poor, and the inner hinge type compensator is not suitable for high-pressure pipeline compensation. 2) The outer hinge universal joint type compensator has the advantages that the inner surface of an outer hinge is in a tension-bending combined stress state due to the overlong force transmission path, so that the local static strength of the material is insufficient, and therefore, the outer hinge universal joint type compensator is not suitable for large-size pipeline compensation.
SUMMERY OF THE UTILITY MODEL
The technical solution problem of the utility model is that: the large-size high-pressure pipeline compensator based on the spherical pressure bearing principle overcomes the defects of the prior art, greatly improves the pressure bearing capacity of the compensator, and breaks through the limitation of the compensator in the field of high-pressure large-diameter pipelines.
The technical scheme of the utility model is that:
a large-size high-pressure pipeline compensator based on a spherical pressure bearing principle comprises: the device comprises a front lining barrel, a rear lining barrel, an S-shaped armored corrugated pipe, a triangular base, a separation structure, a limiting structure and a balance pull rod;
an external high-pressure pipeline is welded at one end of the triangular base, one end of the S-shaped armored corrugated pipe is welded at the other end of the triangular base, one end of the separation structure is welded at the other end of the S-shaped armored corrugated pipe, the other end of the separation structure is welded with the external high-pressure pipeline, a front lining cylinder and a rear lining cylinder are arranged inside the S-shaped armored corrugated pipe, one end of the front lining cylinder is welded and fixed with one end of the separation structure, and one end of the rear lining cylinder is welded and fixed with the other end of the triangular base; the other end of the front lining cylinder and the other end of the rear lining cylinder are in lap joint through spherical connecting parts which are overlapped in the circumferential direction;
orifices are uniformly distributed on the circumferential direction of the cylinder walls of the front lining cylinder 1 and the rear lining cylinder 2 and are used for balancing the air pressure inside and outside the cylinder walls;
the outer wall of the other end of the separation structure is connected with the inner wall of the limiting structure through a spherical pair, the spherical centers of the spherical pair and the spherical connecting part are overlapped, and the spherical center is located at the middle point of the axis of the S-shaped armored corrugated pipe;
the triangular base and the limiting structure are fixedly connected through a plurality of circumferentially and uniformly distributed balance pull rods.
Compared with the prior art, the utility model beneficial effect be:
1) the utility model discloses a spherical bearing that isolating construction and limit structure formed compares in traditional balancing unit's axle sheath supporting as the load part, by a wide margin the bearing capacity of improvement compensator.
2) The utility model discloses break away from the restriction that passes the power route, in the major diameter pipeline, also can not produce great bending stress.
3) The utility model discloses balanced pull rod sets up in the outside of S-shaped armor bellows, balanced pull rod with contactless between the S-shaped armor bellows, the flow resistance loss is little, and it is good to use the maintainability.
4) The utility model discloses balanced pull rod adopts the space triangle-shaped overall arrangement, and structural stability is good.
5) The utility model discloses structural rigidity is good, compares in the outer articulated universal joint type balancing unit with the specification, and rigidity has improved about an order of magnitude.
6) The utility model discloses the assembly is simple, uses the maintainability good.
Drawings
FIG. 1 is a schematic view of the assembly of the present invention;
FIG. 2 is a schematic view of the structure of the balancing device of the present invention;
FIG. 3 is a schematic view of the balancing device of the present invention;
fig. 4 is a schematic view of a triangular base according to an embodiment of the present invention;
fig. 5 is a schematic view of a separation structure according to an embodiment of the present invention;
FIG. 6 is a schematic view of the limiting structure of the present invention;
fig. 7 is a schematic view of a balance pull rod according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a prior art configuration;
FIG. 9 is a schematic view of the front and rear liner sleeves assembled.
Detailed Description
As shown in fig. 1 and 2, the utility model relates to a jumbo size high-pressure line compensator based on sphere pressure-bearing principle, include: the device comprises a front lining barrel 1, a rear lining barrel 2, an S-shaped armored corrugated pipe 3, a triangular base 4, a separating structure 5, a limiting structure 6 and a balance pull rod 7. The materials of the front lining barrel 1, the rear lining barrel 2, the S-shaped armored bellows 3, the triangular base 4, the separating structure 5, the limiting structure 6 and the balance pull rod 7 are GH 4169.
An external high-pressure pipeline is welded at one end of a triangular base 4, one end of an S-shaped armored corrugated pipe 3 is welded at the other end of the triangular base 4, one end of a separation structure 5 is welded at the other end of the S-shaped armored corrugated pipe 3, the other end of the separation structure 5 is welded with the external high-pressure pipeline, a front lining barrel 1 and a rear lining barrel 2 are arranged inside the S-shaped armored corrugated pipe 3, one end of the front lining barrel 1 is welded and fixed with one end of the separation structure 5, and one end of the rear lining barrel 2 is welded and fixed with the other end of the triangular base 4; the other end of the front lining cylinder 1 and the other end of the rear lining cylinder 2 are overlapped through spherical connecting parts which are overlapped in the circumferential direction;
orifices are uniformly distributed on the circumferential direction of the cylinder walls of the front lining cylinder 1 and the rear lining cylinder 2 and used for rapidly balancing the air pressure inside and outside the cylinder walls;
the outer wall of the other end of the separation structure 5 is connected with the inner wall of the limiting structure 6 through a spherical pair, the spherical centers of the spherical pair and the spherical connecting part are overlapped, and the spherical center is located at the middle point of the axis of the S-shaped armored corrugated pipe 3; and the contact surface between the separation structure 5 and the limiting structure 6 is coated with molybdenum disulfide lubricating grease to form a spherical bearing. The separation structure 5 can realize deflection in any direction in the limiting structure 6. As shown in fig. 3, the separation structure 5 can be limited by the interference of the straight section with the movement of the inner edge of the limiting structure 6 during the rotation.
As shown in fig. 3, the triangular base 4 and the position-limiting structure 6 are fixedly connected by a plurality of balance pull rods 7 which are uniformly distributed in the circumferential direction. The embodiment of the utility model provides an adopt 3 balanced pull rods 7 to form the layout of space triangle-shaped, structural stability is good. The balance pull rod 7 is arranged outside the S-shaped armored corrugated pipe 3, and the balance pull rod 7 is not in contact with the S-shaped armored corrugated pipe 3. The triangular base 4 and the balance pull rod 7 are fixedly connected through a plurality of bolts 8 and nuts 9; the limiting structure 6 and the balance pull rod 7 are fixedly connected through a plurality of bolts 8.
The S-shaped armor bellows 3 includes: armor structures and S-shaped corrugated tubing. The armor structure and the S-shaped corrugated pipe are made of the same material so as to ensure deformation coordination. An armor structure is arranged at a position, sunken towards the inner wall, between two corrugations of the outer wall of the S-shaped corrugated pipe, the armor structures between the two adjacent corrugations are not connected with each other, and the armor structure is used for resisting deformation of the S-shaped corrugated pipe under the action of high-pressure gas.
As shown in fig. 9, each of the front lining tube 1 and the rear lining tube 2 includes a straight tube section and a spherical section, the other end of the front lining tube 1 and the other end of the rear lining tube 2 are overlapped by the spherical section, the overlapping surface is a spherical surface, the overlapped sections are closely attached, and the radius R1 of the spherical surface and the radius R of the straight tube section satisfy the following relationship:
R1＝R/cosα；
wherein α is the maximum yaw angle of the compensator, i.e. the maximum included angle between the axis of the separation structure 5 and the axis of the limit structure 6, as shown in fig. 3. The wall thickness t of the front lining barrel 1 is the same as that of the rear lining barrel 2, and the other end of the front lining barrel 1 is inserted into the other end of the rear lining barrel 2 to form an overlap portion.
Specifically, an inner ring interface of the separation structure 5 in the balancing device is welded with the front lining cylinder 1 through an electron beam, an inner ring interface of the triangular base 4 in the balancing device is welded with the rear lining cylinder 2 through an electron beam, and the front lining cylinder and the rear lining cylinder are overlapped through spherical connecting parts which are overlapped in the circumferential direction. And outer ring interfaces of the separation structure 5 and the triangular base 4 in the balancing device are respectively welded with two ends of the S-shaped armored corrugated pipe by an electron beam method. The corrugated pipe is used as a flexible component to compensate through deformation, the balancing device is used for bearing pressure thrust generated by pressurization and deflection of the corrugated pipe, and the lining cylinder can reduce flow resistance loss of the corrugated pipe. Fig. 4 is a schematic view of a triangular base 4 according to an embodiment of the present invention. As shown in fig. 5, a schematic view of a separation structure 5 according to an embodiment of the present invention is shown. As shown in fig. 6, is a schematic view of the limiting structure 6 of the present invention. Fig. 7 is a schematic view of a balance rod 7 according to an embodiment of the present invention.
The compensator is suitable for high-pressure large-diameter pipelines, when the inner diameter of the corrugated pipe is 150mm and the bearing pressure is 33MPa, the stress level of the compensator is 500MPa, and the rigidity is 0.7 mm; compared with an external hinge universal joint type compensator with the same specification, the external hinge universal joint type compensator is low in stress level, good in structural rigidity and approximately improved in rigidity by one order of magnitude.
The embodiment of the utility model provides an in the high-pressure gas pipeline pressure be 33MPa, the bearing capacity of this device structure reaches 50MPa, also can use. In addition, the device is made of GH4169, and can be applied to high-pressure large-size gas pipelines with high temperature of 600 ℃.
Those skilled in the art will appreciate that the details of the present invention not described in detail herein are well within the skill of those skilled in the art.
Claims (8)
1. The utility model provides a jumbo size high-pressure line compensator based on sphere pressure-bearing principle which characterized in that includes: the device comprises a front lining barrel (1), a rear lining barrel (2), an S-shaped armored corrugated pipe (3), a triangular base (4), a separating structure (5), a limiting structure (6) and a balance pull rod (7);
an external high-pressure pipeline is welded at one end of the triangular base (4), one end of the S-shaped armored corrugated pipe (3) is welded at the other end of the triangular base (4), one end of the separating structure (5) is welded at the other end of the S-shaped armored corrugated pipe (3), the other end of the separating structure (5) is welded with the external high-pressure pipeline, a front lining cylinder (1) and a rear lining cylinder (2) are arranged inside the S-shaped armored corrugated pipe (3), one end of the front lining cylinder (1) is welded and fixed with one end of the separating structure (5), and one end of the rear lining cylinder (2) is welded and fixed with the other end of the triangular base (4); the other end of the front lining cylinder (1) is in lap joint with the other end of the rear lining cylinder (2) through a spherical connecting part which is overlapped in the circumferential direction;
orifices are uniformly distributed on the circumferential direction of the cylinder walls of the front lining cylinder (1) and the rear lining cylinder (2), and are used for balancing the air pressure inside and outside the cylinder walls;
the outer wall of the other end of the separation structure (5) is connected with the inner wall of the limiting structure (6) through a spherical pair, the spherical pair is overlapped with the spherical center of the spherical connecting part, and the spherical center is positioned at the middle point of the axis of the S-shaped armored corrugated pipe (3);
the triangular base (4) and the limiting structure (6) are fixedly connected through a plurality of balance pull rods (7) which are uniformly distributed in the circumferential direction.
2. A compensator for large-size high-pressure pipelines based on spherical pressure bearing principle according to claim 1, wherein the S-shaped armoured bellows (3) comprises: an armor structure and an S-shaped corrugated tube;
the armor structure and the S-shaped corrugated pipe are made of the same material;
an armor structure is arranged at a position, sunken towards the inner wall, between two corrugations of the outer wall of the S-shaped corrugated pipe, the armor structures between the two adjacent corrugations are not connected with each other, and the armor structure is used for resisting deformation of the S-shaped corrugated pipe under the action of high-pressure gas.
3. The large-size high-pressure pipeline compensator based on the spherical pressure bearing principle as claimed in any one of claims 1 to 2, wherein the front lining cylinder (1) and the rear lining cylinder (2) both comprise a straight cylinder section and a spherical section, the other end of the front lining cylinder (1) and the other end of the rear lining cylinder (2) are overlapped through the spherical section, the overlapping surface is a spherical surface, and the radius R1 of the spherical surface and the radius R of the straight cylinder section satisfy the following relationship:
R1＝R/cosα；
wherein alpha is the maximum value of an included angle between the axis of the separation structure (5) and the axis of the limiting structure (6).
4. A large-size high-pressure pipeline compensator based on spherical pressure bearing principle according to claim 3, characterized in that the balance pull rod (7) is arranged outside the S-shaped armored corrugated pipe (3), and the balance pull rod (7) is not in contact with the S-shaped armored corrugated pipe (3).
5. A large-size high-pressure pipeline compensator based on the spherical pressure bearing principle according to claim 4, wherein the triangular base (4) and the balance pull rod (7) are fixedly connected through a plurality of bolts (8) and nuts (9).
6. A large-size high-pressure pipeline compensator based on spherical pressure bearing principle according to claim 4, characterized in that the limiting structure (6) and the balance pull rod (7) are fixedly connected through a plurality of bolts (8).
7. A large-size high-pressure pipeline compensator based on the spherical pressure bearing principle according to claim 4, wherein the contact surface between the separation structure (5) and the limit structure (6) is coated with molybdenum disulfide grease.
8. The large-size high-pressure pipeline compensator based on the spherical pressure bearing principle according to claim 7, wherein the materials of the front lining cylinder (1), the rear lining cylinder (2), the S-shaped armored bellows (3), the triangular base (4), the separation structure (5), the limiting structure (6) and the balance pull rod (7) are GH 4169.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921644910.8U CN211259994U (en) | 2019-09-29 | 2019-09-29 | Large-size high-pressure pipeline compensator based on spherical pressure bearing principle |
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| CN201921644910.8U CN211259994U (en) | 2019-09-29 | 2019-09-29 | Large-size high-pressure pipeline compensator based on spherical pressure bearing principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110657309A (en) * | 2019-09-29 | 2020-01-07 | 北京航天动力研究所 | Large-size high-pressure pipeline compensator based on spherical pressure bearing principle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657309A (en) * | 2019-09-29 | 2020-01-07 | 北京航天动力研究所 | Large-size high-pressure pipeline compensator based on spherical pressure bearing principle |
| CN110657309B (en) * | 2019-09-29 | 2024-05-03 | 北京航天动力研究所 | Large-size high-pressure pipeline compensator based on spherical bearing principle |
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