CN112141263A - Balanced multi-cone arc-shaped low-rigidity vibration-damping connecting pipe - Google Patents
Balanced multi-cone arc-shaped low-rigidity vibration-damping connecting pipe Download PDFInfo
- Publication number
- CN112141263A CN112141263A CN202010909162.2A CN202010909162A CN112141263A CN 112141263 A CN112141263 A CN 112141263A CN 202010909162 A CN202010909162 A CN 202010909162A CN 112141263 A CN112141263 A CN 112141263A
- Authority
- CN
- China
- Prior art keywords
- pipe
- pipe body
- arc
- pipe wall
- rubber
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B17/0081—Vibration isolation or damping elements or arrangements, e.g. elastic support of deck-houses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a balanced multi-cone arc-shaped low-rigidity vibration-damping connecting pipe which comprises a rubber pipe body and a flange structure vulcanized with two ends of the rubber pipe body into a whole. The invention has the advantages of good balance, large displacement compensation amount, low rigidity, strong vibration damping capacity and the like, and can meet the use requirements of a ship pipeline system.
Description
Technical Field
The invention relates to the field of ship vibration reduction, in particular to a balanced multi-cone arc-shaped low-rigidity vibration reduction connecting pipe.
Background
In a marine pipeline system, due to the influence of factors such as vibration, impact and internal pressure change, relative displacement between equipment and a pipeline is caused, and the pipeline system and the equipment are damaged in severe cases. Meanwhile, the seawater pump is directly connected with the ship body through the seawater pipeline, so that the problem of short circuit of pipeline vibration sound is caused, and the ship vibration reduction and noise reduction effects are adversely affected. In order to solve the two problems, a large number of vibration reduction connecting pipes are required to be arranged on the pipeline, and the functions of displacement compensation and vibration isolation are achieved on the pipeline system.
The patent with the publication number of CN1265116C and the invention name of 'three-flange structure self-balancing flexible connecting pipe' provides a vibration reduction connecting pipe with a three-flange integrated structure joint, which can provide displacement compensation capability and simultaneously keep the self-balancing of a pipe body; the patent of CN100572887C entitled Balanced type arc pipe joint with displacement compensation proposes a vibration reduction connecting pipe with single arc warp of the pipe body, which enhances the displacement compensation capability of the pipe body. The two vibration-damping connecting pipe shafts have high radial rigidity which is as high as 107N/m order of magnitude, and can not meet the requirement of high vibration reduction performance of a pipeline system. The patent application with the publication number of CN109899604A and the name of 'multi-curved surface self-balancing low-rigidity rubber hose' proposes a vibration-damping connecting pipe with a pipe body formed by a plurality of arc-shaped curved surfaces in the same shape, and in the implementation example of the patent, the rigidity of flexible connecting pipes with the same drift diameter is not compared, but a drift diameter DN32 double-arc flexible connecting pipe is compared with a drift diameter DN100 single-arc flexible connecting pipe. In fact, the rigidity of the small-diameter flexible connecting pipe is certainly much lower than that of the large-diameter flexible connecting pipe under the same length, and the patent example cannot show that the invention has the characteristic of low rigidity. The patent application publication No. CN110861320A entitled "symmetric hyperboloid body vibration-damping connecting pipe with self-locking function combined flange" and a manufacturing method thereof proposes a pipe body structure similar to the content of the patent application publication No. CN109899604A, but no test data is provided to show that the invention has the characteristic of low rigidity. Along with the continuous improvement of the requirements of vibration reduction and noise reduction of the ship, the working pressure of a pipeline system is continuously improved, and the rigidity requirement of a vibration reduction connecting pipe for connection is reduced to 106Of the order of N/m, some even up to 105N/m order of magnitude, the existing vibration reduction connecting pipe cannot meet the design requirement of high vibration reduction and noise reduction of a marine pipeline under high working pressure.
Disclosure of Invention
The invention aims to solve the technical problems and provides the balanced type multi-cone arc-shaped low-rigidity vibration attenuation connecting pipe which is simple in structure, good in balance and higher in displacement compensation amount and lower in rigidity.
The technical scheme includes that the rubber pipe comprises a rubber pipe body and a flange structure which is vulcanized with two ends of the rubber pipe body into a whole, at least one restraint ring is sleeved outside the rubber pipe body, the inner diameter of the restraint ring is smaller than the maximum latitudinal outer diameter of the rubber pipe body, so that the rubber pipe body is restrained and divided into two or more sections of sub-pipe bodies, and the pipe wall of each section of sub-pipe body is composed of one section of arc-shaped pipe wall and at least one section of straight-line section pipe wall which is adjacent to and tangent to the arc-shaped pipe wall.
The pipe wall close to the flange structure end is a straight-line pipe wall, and the pipe wall close to the restraining ring end is a straight-line pipe wall or an arc-shaped pipe wall.
The pipe wall of the sub-pipe body is composed of a straight-line section pipe wall and an arc section pipe wall, or is composed of two straight-line section pipe walls and an arc section pipe wall positioned between the two straight-line section pipe walls.
The ratio of the length of the projection of the pipe wall of the straight-line segment to the central axis to the length of the sub-pipe body is 0.15-0.85.
And the included angle between the pipe wall of the straight line section and the central axis is 15-75 degrees.
The flange structure is formed by vulcanizing an outer flange, a middle flange and a compression flange into a whole, the rubber tube body is formed by vulcanizing an inner rubber layer, a framework layer and an outer rubber layer into a whole, the inner rubber layer and the outer flange are vulcanized into a whole, the outer rubber layer and the middle flange are vulcanized into a whole, the framework layer is formed by spirally winding cord fabric on the inner rubber layer in a crossed mode, and two ends of the cord fabric are clamped and fixed by the outer flange and the compression flange after surrounding the middle flange. The framework layer can be made of aramid fiber, polyester or nylon.
The contact part of the inner side of the middle flange and the outer rubber layer is an arc-shaped surface.
One side of the pressing flange, which faces the pipe wall of the rubber pipe body, is an inclined plane, and the inclined plane and the pipe wall of the rubber pipe body form an included angle of 10-60 degrees.
The calculation formula of the winding angles of the cord fabric at different positions on the inner rubber layer of the rubber pipe body is as follows:
in the formula, theta is the winding angle at any position of the pipe body, alpha is the included angle between the radial direction of the meridian of the pipe body at the position and the central axis, R is the distance between the position and the intersection point from the radial direction of the meridian to the central axis, R is the radius of two ends of the pipe body, and theta is the included angle between the radial direction of the meridian of the pipe body at the position and the central axis0Is the initial winding angle of the pipe body.
The nominal diameter of the rubber pipe body is 32 mm-1250 mm.
In view of the problems provided in the background art, the inventors made the following improvements:
(1) the pipe wall shape of the sub-pipe body formed after the constrained ring is restrained is deeply researched, the single arc-shaped pipe wall in the past is changed into the pipe wall formed by an arc-shaped section and a straight line section pipe wall which is adjacent to and tangent to the arc-shaped section pipe wall, and the inventor finds that the pipe wall of the straight line section can form a conical pipe locally. Theoretical modeling calculations based on anisotropic laminated shells show that the tube body exhibits an irregular curve in the warp direction when subjected to internal pressure, as shown in fig. 5. The conical pipe body axially contracts to form a negative rigidity area, so that the rigidity is obviously lower than that of a pure circular arc pipe body, and the vibration reduction capacity of the vibration reduction connecting pipe is favorably improved. The model optimization result shows that larger shearing stress is generated when the straight line segment is too long, so that the compressive strength of the pipe body is reduced, and the negative stiffness effect is not obvious when the straight line segment is too short, so that the ratio of the length of the pipe wall of the straight line segment projected to the central axis to the length of the sub-pipe body is preferably controlled to be 0.15-0.85, and the included angle between the pipe wall of the straight line segment and the central axis is 15-75 degrees. Compared with the same-size vibration reduction connecting pipe with only an arc-shaped pipe wall, the rigidity can be obviously reduced, and the vibration reduction capacity of the vibration reduction connecting pipe is favorably improved.
(2) The flange structure is further improved, on one hand, the contact part of the inner side of the middle flange and the outer rubber layer is an arc-shaped surface, so that the local stress is reduced, and the service life of the pipe wall is prolonged; on the other hand, one side, opposite to the pipe wall of the rubber pipe body, of the compression flange is cut into an inclined surface, so that an included angle is formed between the inclined surface and the pipe wall of the rubber pipe body, the contact area between the straightway pipe body and the compression flange after pressure-bearing deformation is reduced under the condition that the pipe length is unchanged, and the rigidity can be further reduced. The selection of the size of the included angle needs to take the pressure bearing deformation of the straightway pipe body into consideration, and the preferable included angle range is 10-60 degrees.
(3) The shape of the pipe wall of the sub-pipe body formed after the restraint ring is restrained is different from that of the prior art, so that the calculation of winding angles of the cord fabric at different positions on the inner rubber layer of the rubber pipe body is optimized, the balance of the vibration reduction connecting pipe is realized by adjusting the winding angle of the cord fabric of the pipe body framework layer, the axial length of the pipe body under the working pressure is basically kept unchanged, and the additional deformation of a pipeline system caused by the pressure change is avoided.
(4) The vibration reduction connecting pipe has the advantages of corrosion resistance, high working pressure, small space occupation, high reliability, large displacement compensation amount and strong vibration reduction capability, can keep good balance under the change of fluid pressure in the pipe, can compensate the relative displacement of a pipeline system caused by vibration impact, temperature pressure change and the like, can inhibit the propagation of mechanical vibration along the pipeline, and can meet the use requirements of vibration reduction and noise reduction of the sea pipeline in a narrow space of a ship.
Drawings
FIG. 1: example 1 is a schematic structural view;
FIG. 2: example 1 a simplified mathematical model diagram;
FIG. 3: example 2 is a schematic structural diagram;
FIG. 4: example 2 a simplified mathematical model diagram;
FIG. 5: the pressure-bearing deformation of the pipe body is schematically shown;
FIG. 6: a partial enlarged view of a flange structure;
FIG. 7: a cross-sectional view of the rubber tube body.
The pipe comprises a rubber pipe body 1, an outer flange 2, an intermediate flange 3, a pressing flange 4, a restraint ring 5, a sub-pipe body 6, an arc-shaped pipe wall 7, a straight-line pipe wall 8, an inner rubber layer 9, a framework layer 10, an outer rubber layer 11, an arc-shaped surface 12 and an inclined surface 13.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
referring to fig. 1, the rubber tube comprises a rubber tube body 1 and a flange structure vulcanized with two ends of the rubber tube body 1 into a whole, wherein at least one restraining ring 5 is sleeved outside the rubber tube body 1, the inner diameter of the restraining ring 5 is smaller than the maximum latitudinal outer diameter of the rubber tube body 1, so that the rubber tube body 1 is restrained and divided into more than two sections of sub tube bodies 6, and the tube wall of each section of sub tube body 6 is composed of an arc-shaped section tube wall 7 and at least one section of straight-line section tube wall 8 which is adjacent to and tangent to the arc-shaped section tube wall 7 along the longitude direction.
Preferably, the pipe wall close to the flange structure end is a straight-line pipe wall 8, and the pipe wall close to the restraining ring 5 end is a straight-line pipe wall 8 or an arc-shaped pipe wall 7. Preferably, the pipe wall of the sub-pipe body 6 is composed of a straight-line pipe wall 8 and an arc-shaped pipe wall 7, or is composed of two straight-line pipe walls 8 and an arc-shaped pipe wall 7 located between the two straight-line pipe walls 8.
Example 1 as shown in fig. 1 and 2, the rubber pipe body 1 is divided into two sections of sub-pipe bodies 6 by a confinement ring 5, and the pipe wall of each section of sub-pipe body 6 is composed of a straight section pipe wall 8 close to the flange structure end and an arc section pipe wall 7 close to the confinement ring end 5.
As another example, as shown in fig. 3 and 4, in embodiment 2, the rubber pipe body 1 is divided into a plurality of segments of sub-pipe bodies 6 by a plurality of confinement rings 5, and a pipe wall of each segment of sub-pipe body 6 is composed of two straight line segment pipe walls 8 near the flange structure end and the confinement ring 5 end and an arc-shaped segment pipe wall 7 located between the two straight line segment pipe walls 8.
Preferably, the length ratio of the length of the sub-pipe body projected to the central axis by the pipe wall of the straight-line segment is 0.15-0.85. And the included angle alpha between the pipe wall of the straight line section and the central axis is 15-75 degrees.
Referring to fig. 1 and 3, the flange structure is formed by vulcanizing an outer flange 2, a middle flange 3 and a compression flange 4 into a whole, the pipe wall of the rubber pipe body 1 is formed by vulcanizing an inner rubber layer 9, a framework layer 10 and an outer rubber layer 11 into a whole, the inner rubber layer 9 and the outer flange 2 are vulcanized into a whole, the outer rubber layer 11 and the middle flange 3 are vulcanized into a whole, the framework layer 10 is formed by spirally winding a cord fabric on the inner rubber layer 9 in a crossed manner, and two ends of the cord fabric are clamped and fixed by the outer flange 2 and the compression flange 4 after surrounding the middle flange 3. The material of the framework layer 10 can be selected from aramid fiber, polyester or nylon. The contact part of the inner side of the middle flange 3 and the outer glue layer 11 is an arc-shaped surface 12. The side, opposite to the pipe wall of the rubber pipe body, of the pressing flange 4 is an inclined surface 13, and an included angle beta between the inclined surface 13 and the pipe wall of the rubber pipe body 1 is 10-60 degrees. The nominal diameter of the rubber pipe body 1 is preferably 32 mm-1250 mm.
Referring to fig. 2 and 4, the winding angle calculation formula of the cord fabric at different positions on the inner rubber layer 9 of the rubber tube body 1 is as follows:
in the formula, theta is the winding angle at any position of the pipe body, phi is the included angle between the radial direction of the meridian of the pipe body at the position and the central axis, R is the distance between the position and the intersection point from the radial direction of the meridian to the central axis, R is the radius of two ends of the pipe body, and theta is0Is the initial winding angle of the pipe body.
The structural parameters of the balanced multi-cone arc-shaped low-rigidity vibration attenuation connecting pipe in the embodiment 1 of the invention are shown in table 1, the balanced arc-shaped pipe joint (patent CN100572887C) is used in the comparative example 1, the multi-curved surface self-balanced low-rigidity rubber hose (patent CN109899604A) is used in the comparative example 2, and the structural parameters of the comparative examples 1 and 2 are the same as those in table 1. The results of the stiffness tests of example 1 of the present invention and comparative example 1 are shown in tables 2 and 3, and the reduction rate of the axial stiffness is not less than 52% and the reduction rate of the radial stiffness is not less than 77%.
The results of the axial stiffness tests of the present invention and comparative example 2 are shown in table 4, and the axial stiffness reduction rate is not less than 25%. The rigidity comparison result shows that the vibration reduction connecting pipe has the characteristics of small occupied space, strong reliability, large displacement compensation amount, low axial and radial rigidity and the like, and can meet the actual use requirement of a novel ship in the future.
TABLE 1 parameters of examples of the invention
TABLE 2 comparison of stiffness test results for the invention and comparative example 1 under gauge DN65
TABLE 3 Caliper DN125 Specification, comparison of stiffness test results of the present invention and comparative example 1
TABLE 4 axial stiffness test results for inventive and comparative examples 2 (10)6N/m) comparison
Claims (10)
1. The balanced type multi-cone arc-shaped low-rigidity vibration reduction connecting pipe comprises a rubber pipe body and a flange structure vulcanized with two ends of the rubber pipe body into a whole, and is characterized in that at least one restraining ring is sleeved outside the rubber pipe body, the inner diameter of the restraining ring is smaller than the maximum latitudinal outer diameter of the rubber pipe body, so that the rubber pipe body is restrained and divided into two or more sections of sub-pipe bodies, and the pipe wall of each section of sub-pipe body is composed of one section of arc-shaped section pipe wall and at least one section of straight-line section pipe wall adjacent to and tangent to the arc-shaped section pipe wall along the.
2. The balanced multi-cone arc-shaped low-rigidity vibration damping connecting pipe as claimed in claim 1, wherein the pipe wall near the flange structure end is a straight-line pipe wall, and the pipe wall near the confinement ring end is a straight-line pipe wall or an arc-shaped pipe wall.
3. The balanced type multi-cone arc-shaped low-rigidity vibration damping connecting pipe as claimed in claim 2, wherein the pipe wall of the sub-pipe body is composed of a section of straight-line pipe wall and a section of arc-shaped pipe wall, or is composed of two sections of straight-line pipe wall and an arc-shaped section pipe wall positioned between the two sections of straight-line pipe wall.
4. The balanced type multi-cone arc-shaped low-rigidity vibration damping connecting pipe as claimed in claim 1, wherein the ratio of the length of the projection of the pipe wall of the straight line section to the central axis to the length of the sub pipe body is 0.15-0.85.
5. The balanced type multi-cone arc-shaped low-rigidity vibration damping connecting pipe as claimed in claim 1, wherein an included angle between the pipe wall of the straight line section and the central axis is 15-75 degrees.
6. The balanced type multi-cone arc-shaped low-rigidity vibration damping connecting pipe according to any one of claims 1 to 5, wherein the flange structure is formed by vulcanizing an outer flange, a middle flange and a pressing flange into a whole, the rubber pipe body is formed by vulcanizing an inner rubber layer, a framework layer and an outer rubber layer into a whole, the inner rubber layer and the outer flange are vulcanized into a whole, the outer rubber layer and the middle flange are vulcanized into a whole, the framework layer is formed by spirally winding cord fabric on the inner rubber layer in a crossed mode, and two ends of the cord fabric are clamped and fixed by the outer flange and the pressing flange after surrounding the middle flange.
7. The balanced type multi-cone arc-shaped low-rigidity vibration damping connecting pipe as claimed in claim 6, wherein the contact part of the inner side of the middle flange and the outer rubber layer is an arc-shaped surface.
8. The balanced type multi-cone arc-shaped low-rigidity vibration damping connecting pipe as claimed in claim 6 or 7, wherein one side of the pressing flange, which faces the pipe wall of the rubber pipe body, is an inclined surface, and the inclined surface and the pipe wall of the rubber pipe body form an included angle of 10-60 degrees.
9. The balanced type multi-cone arc-shaped low-rigidity vibration damping connecting pipe as claimed in claim 6, wherein the winding angle calculation formula of the cord fabric at different positions on the inner rubber layer of the rubber pipe body is as follows:
in the formula, theta is the winding angle at any position of the pipe body, alpha is the included angle between the radial direction of the meridian of the pipe body at the position and the central axis, R is the distance between the position and the intersection point from the radial direction of the meridian to the central axis, R is the radius of two ends of the pipe body, and theta is the included angle between the radial direction of the meridian of the pipe body at the position and the central axis0Is the initial winding angle of the pipe body.
10. The balanced multi-cone arc-shaped low-rigidity vibration damping connecting pipe according to claim 1, wherein the nominal diameter of the rubber pipe body is 32 mm-1250 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010909162.2A CN112141263B (en) | 2020-09-02 | 2020-09-02 | Balanced multi-cone arc-shaped low-rigidity vibration-damping connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010909162.2A CN112141263B (en) | 2020-09-02 | 2020-09-02 | Balanced multi-cone arc-shaped low-rigidity vibration-damping connecting pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112141263A true CN112141263A (en) | 2020-12-29 |
| CN112141263B CN112141263B (en) | 2022-01-11 |
Family
ID=73889384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010909162.2A Active CN112141263B (en) | 2020-09-02 | 2020-09-02 | Balanced multi-cone arc-shaped low-rigidity vibration-damping connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112141263B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811208A (en) * | 2022-04-13 | 2022-07-29 | 中国人民解放军海军工程大学 | Low-rigidity flexible connecting pipe |
| CN114810901A (en) * | 2022-04-15 | 2022-07-29 | 中国人民解放军海军工程大学 | Novel air bag vibration isolator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0942577A (en) * | 1995-07-31 | 1997-02-14 | Mitsubishi Heavy Ind Ltd | Vibration proofing pipe joint |
| CN204729533U (en) * | 2015-06-28 | 2015-10-28 | 江苏双益给排水有限公司 | Flexible shock-absorbing device |
| CN109899604A (en) * | 2018-07-11 | 2019-06-18 | 中国人民解放军海军工程大学 | More curved surface self-balancing Low rigidity rubber hose |
| CN110159853A (en) * | 2019-06-20 | 2019-08-23 | 北京燕拓减振科技有限公司 | A kind of cord wound form reducing arc-shaped flexible adapter tube with large displacement compensation capability |
| CN110861320A (en) * | 2019-11-27 | 2020-03-06 | 湖北维普路船舶机电科技有限公司 | Symmetrical hyperboloid vibration-damping connecting pipe with self-locking combined flange and manufacturing method |
| CN111306374A (en) * | 2020-03-05 | 2020-06-19 | 张建军 | Low-rigidity impact-resistant large-displacement compensation balanced type double-arc flexible connecting pipe |
| CN111306384A (en) * | 2020-03-05 | 2020-06-19 | 张建军 | Arc-shaped flexible connecting pipe with low rigidity, impact resistance and high reliability |
-
2020
- 2020-09-02 CN CN202010909162.2A patent/CN112141263B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0942577A (en) * | 1995-07-31 | 1997-02-14 | Mitsubishi Heavy Ind Ltd | Vibration proofing pipe joint |
| CN204729533U (en) * | 2015-06-28 | 2015-10-28 | 江苏双益给排水有限公司 | Flexible shock-absorbing device |
| CN109899604A (en) * | 2018-07-11 | 2019-06-18 | 中国人民解放军海军工程大学 | More curved surface self-balancing Low rigidity rubber hose |
| CN110159853A (en) * | 2019-06-20 | 2019-08-23 | 北京燕拓减振科技有限公司 | A kind of cord wound form reducing arc-shaped flexible adapter tube with large displacement compensation capability |
| CN110861320A (en) * | 2019-11-27 | 2020-03-06 | 湖北维普路船舶机电科技有限公司 | Symmetrical hyperboloid vibration-damping connecting pipe with self-locking combined flange and manufacturing method |
| CN111306374A (en) * | 2020-03-05 | 2020-06-19 | 张建军 | Low-rigidity impact-resistant large-displacement compensation balanced type double-arc flexible connecting pipe |
| CN111306384A (en) * | 2020-03-05 | 2020-06-19 | 张建军 | Arc-shaped flexible connecting pipe with low rigidity, impact resistance and high reliability |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811208A (en) * | 2022-04-13 | 2022-07-29 | 中国人民解放军海军工程大学 | Low-rigidity flexible connecting pipe |
| CN114811208B (en) * | 2022-04-13 | 2024-02-20 | 中国人民解放军海军工程大学 | Low-rigidity flexible connecting pipe |
| CN114810901A (en) * | 2022-04-15 | 2022-07-29 | 中国人民解放军海军工程大学 | Novel air bag vibration isolator |
| CN114810901B (en) * | 2022-04-15 | 2024-02-20 | 中国人民解放军海军工程大学 | Novel air bag vibration isolator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112141263B (en) | 2022-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112141263B (en) | Balanced multi-cone arc-shaped low-rigidity vibration-damping connecting pipe | |
| US3479061A (en) | Partially balanced flexible pipe joint | |
| US6824323B2 (en) | Connecting ball joint, for example for an anti-roll bar of a running vehicle | |
| US4173360A (en) | Flexible sealing joint | |
| CN110159853B (en) | Cord winding type reducing arc flexible connecting pipe with large displacement compensation capability | |
| CN109899604A (en) | More curved surface self-balancing Low rigidity rubber hose | |
| EP2662524B1 (en) | Flexible pipe body with buoyancy element and method of producing same | |
| CN204610035U (en) | A kind of pipeline heat compensating unit | |
| CN111306374B (en) | Low-rigidity impact-resistant large-displacement compensation balanced type double-arc flexible connecting pipe | |
| JP2018025236A (en) | hose | |
| CN107108007A (en) | Transmission device and the ship for being equipped with the transmission device for the compact and high propulsive efficiency of ship | |
| US3645115A (en) | Universal joint with laminate bearings | |
| JPH06147377A (en) | Flexible coupling device | |
| CN201259066Y (en) | Balance type arced pipe joint with large displacement compensation capability | |
| CN108266289A (en) | High-pressure gas double-wall pipe | |
| CN100572887C (en) | The balance type arced pipe joint that large displacement compensation capability is arranged | |
| US20210317890A1 (en) | Arrangement for transferring torsion torque, particularly in the form of a torsion spring or drive shaft made of composite fiber materials in order to achieve a high specific material usage | |
| CN201651622U (en) | Reducing special-shaped flexible rubber joint | |
| CN110805757A (en) | Novel ring rib steel band reinforcing flexible composite pipe | |
| KR102197128B1 (en) | High Pressure Compensator | |
| CN220396877U (en) | Expansion joint with compensation and noise reduction functions | |
| CN221300466U (en) | Multi-degree-of-freedom pipeline joint | |
| US20240175532A1 (en) | Expansion joint with arch geometry | |
| BR112020025351A2 (en) | tubular joint and installation | |
| CN118328234A (en) | Vibration-damping noise-eliminating metamaterial characteristic pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |