CN112628478B - Pipeline axial vibration reduction and isolation wall penetrating structure and sealing performance monitoring method thereof - Google Patents
Pipeline axial vibration reduction and isolation wall penetrating structure and sealing performance monitoring method thereof Download PDFInfo
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- CN112628478B CN112628478B CN202011378987.2A CN202011378987A CN112628478B CN 112628478 B CN112628478 B CN 112628478B CN 202011378987 A CN202011378987 A CN 202011378987A CN 112628478 B CN112628478 B CN 112628478B
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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
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
Abstract
The invention relates to the technical field of pipeline vibration reduction and isolation, and discloses a pipeline axial vibration reduction and isolation wall penetrating structure and a sealing performance monitoring method thereof, wherein the wall penetrating structure comprises: the wall penetrating device comprises a first baffle and a second baffle which are annular respectively, wherein the first baffle and the second baffle are oppositely arranged on two sides of a wall surface and are respectively sleeved on a wall penetrating pipeline, a first flexible structure is connected between the first baffle and the wall surface, and a second flexible structure is connected between the second baffle and the wall surface. Compared with the original welding type wall penetrating structure, the pipeline axial vibration reduction and isolation wall penetrating structure and the sealing performance monitoring method thereof can greatly reduce pipeline vibration radiation noise, ensure that adjacent systems and equipment are prevented from being interfered by vibration, reduce noise pollution and improve cabin comfort.
Description
Technical Field
The invention relates to the technical field of pipeline vibration reduction and isolation, in particular to a pipeline axial vibration reduction and isolation wall penetrating structure and a sealing performance monitoring method thereof.
Background
The steam pipeline is an essential part in a ship system and plays a role in working medium conveying and energy transfer. Due to the dispersed and complicated arrangement of ship system equipment, a steam pipeline inevitably needs to penetrate through some wall surfaces with sealing requirements, such as a box body, a bulkhead and the like. Traditionally, the pipe is welded directly to the wall and the pipe is rigidly connected to the wall.
Because fluid flow and rotary machine excitation such as air compressor machine, pump, steam conduit can produce the vibration to wear the wall structure through this kind of tradition welded type and directly transmit to the wall, and then transmit other equipment and system, seriously influence some performances and the life-span that have strict control requirement part to the vibration such as bearing, heat exchange tube, steam conduit vibration still can produce the radiation noise simultaneously, reduces cabin comfort level, pollutes marine ecological environment.
The traditional welding type pipeline wall penetrating structure has the problems that due to the vibration of the pipeline, the connected parts are greatly influenced, and radiation noise is generated.
Disclosure of Invention
The invention provides an axial vibration reduction and isolation wall penetrating structure of a pipeline and a sealing performance monitoring method thereof, which are used for solving or partially solving the problems that the traditional welding type pipeline wall penetrating structure greatly influences connected parts and generates radiation noise due to the vibration of the pipeline.
The invention provides a pipeline axial vibration reduction and isolation wall penetrating structure, which comprises: the wall penetrating device comprises a first baffle and a second baffle which are annular respectively, wherein the first baffle and the second baffle are oppositely arranged on two sides of a wall surface and are respectively sleeved on a wall penetrating pipeline, a first flexible structure is connected between the first baffle and the wall surface, and a second flexible structure is connected between the second baffle and the wall surface.
According to the pipeline axial vibration reduction and isolation wall penetrating structure provided by the invention, the opposite side edges of the first flexible structure and the second flexible structure are connected to the two sides of the connecting plate, the connecting plate is fixedly connected to the wall surface, and a gap is formed between the connecting plate and the wall penetrating pipeline.
According to the axial vibration reduction and isolation wall penetrating structure for the pipeline, which is provided by the invention, the wall penetrating pipeline comprises a transition pipe, the first baffle and the second baffle are respectively sleeved on the transition pipe, and two ends of the transition pipe are used for being correspondingly and fixedly connected with pipelines on two sides of a wall surface.
According to the axial vibration reduction and isolation wall penetrating structure for the pipeline, which is provided by the invention, the first flexible structure comprises a first flexible outer ring and a first flexible inner ring which are respectively arranged on the periphery of the wall penetrating pipeline, the first flexible inner ring is positioned on the inner side of the first flexible outer ring, and a first cavity is formed between the first flexible outer ring and the first flexible inner ring; and the first cavity is filled with damping materials.
According to the axial vibration reduction and isolation wall penetrating structure for the pipeline, provided by the invention, the first flexible outer ring and the first flexible inner ring are respectively of a curve structure along the axial direction of the wall penetrating pipeline.
According to the axial vibration reduction and isolation wall penetrating structure for the pipeline, which is provided by the invention, the second flexible structure comprises a second flexible outer ring and a second flexible inner ring which are respectively arranged on the periphery of the wall penetrating pipeline, the second flexible inner ring is positioned on the inner side of the second flexible outer ring, and a second cavity is formed between the second flexible outer ring and the second flexible inner ring; and the second cavity is filled with damping materials.
According to the axial vibration reduction and isolation wall penetrating structure for the pipeline, provided by the invention, the second flexible outer ring and the second flexible inner ring are respectively of a curve structure along the axial direction of the wall penetrating pipeline.
According to the axial vibration reduction and isolation wall penetrating structure for the pipeline, one side, connected with the first cavity and the connecting plate, of the connecting structure is arranged corresponding to one side, connected with the second cavity and the connecting plate, of the connecting structure, and a plurality of through holes are formed in the connecting plate in the circumferential direction and used for communicating the first cavity with the second cavity.
According to the pipeline axial vibration reduction and isolation penetrating wall structure provided by the invention, the first baffle plate is provided with a pressure sensor at a position corresponding to the first cavity or the second baffle plate is provided with a pressure sensor at a position corresponding to the second cavity.
The invention also provides a method for monitoring the sealing performance of the pipeline axial vibration reduction and isolation wall penetrating structure, which is characterized in that the method comprises the following steps of: initially setting a first pressure of a first side space of the wall surface and a second pressure of a second side space of the wall surface to be different from a third pressure in the first cavity and the second cavity; monitoring a third pressure inside the first cavity and the second cavity in real time; if the third pressure changes to the first pressure, the flexible structure on the first side of the wall surface leaks; if the third pressure changes to the second pressure, the flexible structure on the second side of the wall leaks.
Compared with the original welding type wall penetrating structure, the pipeline axial vibration reduction and isolation wall penetrating structure and the sealing performance monitoring method thereof can greatly reduce pipeline vibration radiation noise, ensure that adjacent systems and equipment are prevented from being interfered by vibration, reduce noise pollution and improve cabin comfort.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic view of a piping axially damped vibration isolation through-wall structure provided by the present invention;
FIG. 2 is a schematic view of a first flexible outer ring provided by the present invention;
FIG. 3 is a schematic view of a first flexible inner ring provided by the present invention;
fig. 4 is a schematic view of a connection plate provided by the present invention.
Reference numerals:
1. a first baffle plate; 2. a second baffle; 101. a first flexible outer ring; 102. a first flexible inner ring; 201. a second flexible outer ring; 202. a second flexible inner ring; 1011 and 1021, left side; 1012, and 1022, right lateral side; 3. a wall surface; 4. a connecting plate; 41. a through hole; 5. a left side pipeline; 6. a transition duct; 7. a damping material; 8. a first cavity; 9. a second cavity; 10. a right side pipeline; 11. a pressure sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The pipe axial vibration reduction isolation penetrating wall structure and the sealing performance monitoring method thereof of the invention are described below with reference to fig. 1 to 4.
Referring to fig. 1, the present embodiment provides a pipe axial vibration reduction and isolation penetrating wall structure, which includes: the wall penetrating device comprises a first baffle 1 and a second baffle 2 which are annular respectively, wherein the first baffle 1 and the second baffle 2 are oppositely arranged on two sides of a wall surface 3 and are respectively sleeved on a wall penetrating pipeline, a first flexible structure is connected between the first baffle 1 and the wall surface 3, and a second flexible structure is connected between the second baffle 2 and the wall surface 3.
The through-wall pipeline is a pipeline which needs to penetrate through the wall surface 3; the wall 3 is a wall 3 with sealing requirements for a box body, a bulkhead and the like through which the pipeline needs to pass. At the point where the through-wall conduit passes through, an opening may be provided in the wall surface 3 for the through-wall conduit to pass through. The wall-penetrating pipeline is not directly connected with the wall surface 3, and the wall-penetrating pipeline and the wall surface are axially connected through a baffle and a flexible structure. The flexible structure can play the vibration reduction and isolation effect to the vibration of pipeline. The first baffle plate 1 and the second baffle plate 2 are of annular plate-shaped structures, and the inner annular surfaces of the first baffle plate 1 and the second baffle plate 2 are welded with the outer wall surface 3 of the wall penetrating pipeline.
The axial vibration reduction and isolation wall penetrating structure for the pipeline, provided by the embodiment, can greatly reduce vibration radiation noise of the pipeline, ensures that adjacent systems and equipment are free from vibration interference, reduces noise pollution and improves cabin comfort compared with an original welding type wall penetrating structure. The through-wall structure is particularly suitable for high-temperature pipelines, such as steam pipelines.
On the basis of the above embodiment, further, opposite side edges of the first flexible structure and the second flexible structure are connected to two sides of a connecting plate 4, the connecting plate 4 is fixedly connected to the wall surface 3, and a gap is formed between the connecting plate 4 and the wall penetrating pipeline. A gap is arranged between the connecting plate 4 and the outer side surface of the wall-through pipeline.
The first flexible structure and the second flexible structure can be respectively annular and are respectively sleeved on the periphery of the through-wall pipeline. Therefore, the spaces on two sides of the wall surface are sealed and isolated through the first flexible structure and the second flexible structure. Through setting up the connecting plate, can make first flexible construction and second flexible construction respectively with wear wall pipeline coaxial arrangement.
Furthermore, the first flexible structure and the second flexible structure are respectively provided with a distance from the outer side surface of the wall penetrating pipeline. Namely, the first flexible structure and the second flexible structure are not in contact with the wall penetrating pipeline. So that the flexible structure is not in direct contact with the through-wall tubing. Therefore, when the through-wall pipeline is a high-temperature pipeline, the flexible structure can be prevented from being too high in temperature and losing efficacy, the axial vibration reduction and isolation through-wall structure of the pipeline is applicable to the high-temperature pipeline, such as a steam pipeline, and the problem of through-wall vibration isolation of the high-temperature pipeline is solved.
On the basis of the above embodiment, further, the wall penetrating pipeline includes a transition pipe 6, the first baffle 1 and the second baffle 2 are respectively sleeved on the transition pipe 6, and two ends of the transition pipe 6 are used for being correspondingly and fixedly connected with pipelines on two sides of the wall surface 3.
On the basis of the above embodiment, further, the first flexible structure includes a first flexible outer ring 101 and a first flexible inner ring 102 respectively disposed on the periphery of the through-wall pipeline, the first flexible inner ring 102 is located inside the first flexible outer ring 101, and a first cavity 8 is formed between the first flexible outer ring 101 and the first flexible inner ring 102; the first cavity 8 is filled with a damping material 7.
On the basis of the above embodiment, further, the first flexible outer ring 101 and the first flexible inner ring 102 are respectively in a curved structure along the axial direction of the through-wall pipeline.
The first flexible outer ring 101 is of an annular structure, and the cross section of the first flexible outer ring 101 can be designed into an S shape, so that the first flexible outer ring 101 has high flexibility along the axial direction; other shapes, such as a Z shape, etc., are also possible, and are not particularly limited. Referring to fig. 2, the first flexible outer ring 101 is installed in the space between the first baffle plate 1 and the connecting plate 4, and has a left side surface 1011 welded to the end surface of the first baffle plate 1 and a right side surface 1012 welded to the end surface of the connecting plate 4.
First flexible inner ring 102 is an annular structure, and the cross section of first flexible inner ring 102 can be designed to be "S" shaped, so that first flexible inner ring 102 has greater flexibility in the axial direction. Referring to fig. 3, the first flexible inner ring 102 is installed in the space between the first barrier 1 and the connection plate 4, and has a left side surface 1021 welded to the end surface of the first barrier 1 and a right side surface 1022 welded to the end surface of the connection plate 4.
The first flexible outer ring 101, the first flexible inner ring 102, the first baffle 1 and the web 4 form a closed first cavity 8.
On the basis of the above embodiment, further, the second flexible structure includes a second flexible outer ring 201 and a second flexible inner ring 202 respectively disposed on the periphery of the through-wall pipeline, the second flexible inner ring 202 is located inside the second flexible outer ring 201, and a second cavity 9 is formed between the second flexible outer ring 201 and the second flexible inner ring 202; the second cavity 9 is filled with a damping material 7.
On the basis of the above embodiment, further, the second flexible outer ring 201 and the second flexible inner ring 202 are respectively in a curved structure along the axial direction of the through-wall pipeline.
The second flexible outer ring 201 is an annular structure, and the cross section of the second flexible outer ring 201 can be designed into an "S" shape, so that the second flexible outer ring 201 has greater flexibility along the axial direction. The second flexible outer ring 201 is arranged in the space between the second baffle plate 2 and the connecting plate 4, the outer ring surface of the second flexible outer ring is welded on the end surface of the second baffle plate 2, and the inner ring surface of the second flexible outer ring is welded on the end surface of the connecting plate 4.
Second flexible inner ring 202 is an annular structure, and the cross section of second flexible inner ring 202 can be designed to be "S" shaped, so that second flexible inner ring 202 has greater flexibility along the axial direction. The second flexible inner ring 202 is installed in the space between the second baffle 2 and the connecting plate 4, the inner ring surface of the second flexible inner ring is welded on the end surface of the second baffle 2, and the outer ring surface of the second flexible inner ring is welded on the end surface of the connecting plate 4.
The second flexible outer ring 201, the second flexible inner ring 202, the second baffle 2 and the web 4 form a closed second cavity 9.
Further, the first flexible outer ring, the first flexible inner ring, the second flexible outer ring and the second flexible inner ring can be made of metal materials respectively; the whole structure is a shell structure, has certain deformability, can be conveniently and firmly connected by welding and the like, can ensure certain rigidity to improve the structural stability, and can resist certain high temperature, so that the wall penetrating structure is more suitable for the wall penetrating of a high-temperature pipeline. The connecting plate, the first baffle and the second baffle can be made of hard materials and are used for connecting the flexible structure, and the effect of supporting connection and enabling the flexible structure to be separated from the wall penetrating pipeline is achieved.
The damping material can be rubber, sand, metal damping and other materials with good damping characteristics, and is not limited specifically.
On the basis of the above embodiment, further, referring to fig. 4, a side where the first cavity 8 and the connecting plate 4 are connected is disposed corresponding to a side where the second cavity 9 and the connecting plate 4 are connected, and the connecting plate 4 is circumferentially provided with a plurality of through holes 41 for communicating the first cavity 8 and the second cavity 9. The connecting plate 4 is of an annular plate structure, and a plurality of through holes 41 are processed on the end surface of the connecting plate. The through hole 41 communicates the closed first cavity 8 and the closed second cavity 9.
On the basis of the above embodiment, further, the first baffle 1 is provided with a pressure sensor 11 at a position corresponding to the first cavity 8 or the second baffle 2 is provided with a position corresponding to the second cavity 9. Referring to fig. 1, the pressure sensor 11 is installed in the through hole 41 of the second barrier 2, and measures the pressure closing the first cavity 8 and the pressure closing the second cavity 9.
On the basis of the foregoing embodiments, further, the present embodiment provides a method for monitoring the sealing performance of a pipeline axial vibration reduction and isolation penetrating wall structure, including: the first pressure in the first side space and the second pressure in the second side space of the initial setting wall 3 are different from the third pressure inside the first cavity 8 and the second cavity 9; monitoring the third pressure inside the first cavity 8 and the second cavity 9 in real time; if the third pressure changes to the first pressure, the flexible structure on the first side of the wall 3 leaks; if the third pressure is changed to the second pressure, the flexible structure on the second side of the wall 3 will leak.
The four barriers formed by the first flexible outer ring 101, the second flexible outer ring 201, the first flexible inner ring 102 and the second flexible inner ring 202 ensure the sealing integrity of the wall surface 3, and the left side and the right side of the wall surface are isolated.
Assume that the pressure on the left side of wall 3 is P1 and the pressure on the right side of wall 3 is P2. The pressure closing the first cavity 8 and the second cavity 9 is pumped to P3. When the first flexible outer ring 101 is damaged, the first closed cavity 8 and the second closed cavity 9 are communicated with the left side of the wall surface 3, the pressure sensor 11 detects that P3 is equal to P1, and an alarm is given to prompt that the first flexible outer ring 101 is damaged; when the second flexible outer ring 201 is damaged, the first closed cavity 8 and the second closed cavity 9 are communicated with the right side of the wall surface 3, the pressure sensor 11 detects that P3 is equal to P2, and an alarm is given to prompt that the second flexible outer ring 201 is damaged.
Further, a plurality of layers of flexible structures may be radially disposed around the periphery of the through-wall structure, each layer of flexible structures including a first flexible structure and a second flexible structure. A pressure sensor may be disposed inside at least one layer of the flexible structure to monitor the sealing performance of the multi-layer flexible structure, which is not limited specifically.
In addition to the above embodiments, in order to solve the problems of the prior art, the present embodiment provides a wall structure for reducing and isolating vibration in the axial direction of the steam pipeline, which reduces and isolates vibration of the steam pipeline while ensuring the sealing performance of the wall surface 3. A steam line axial vibration reduction isolation through-wall structure comprising: transition pipe 6, first baffle 1, second baffle 2, first flexible outer ring 101, second flexible outer ring 201, first flexible inner ring 102, second flexible inner ring 202, connecting plate 4, pressure sensor 11. The connecting plate 4 is welded on the wall surface 3, and two ends of the transition pipe 6 are respectively welded with the left pipeline 5 and the right pipeline 10 of the wall surface 3.
Through the technical scheme of the embodiment, the following technical purposes and beneficial effects can be achieved: compared with the original welding type wall penetrating structure, the pipeline radial vibration reduction and isolation structure can greatly reduce the vibration radiation noise of the steam pipeline, ensure that adjacent systems and equipment are prevented from being interfered by vibration, reduce noise pollution and improve the comfort level of the cabin; the first flexible outer ring 101, the second flexible outer ring 201, the first flexible inner ring 102 and the second flexible inner ring 202 form four sealing barriers, so that the sealing reliability of the wall surface 3 is improved; the leakage monitoring method for the flexible cabin penetrating device of the pipeline is provided, leakage faults can be found in time, accidents are prevented from further worsening, and system safety is improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a pipeline axial subtracts isolation from wall structure, its characterized in that includes: the wall penetrating device comprises a first baffle and a second baffle which are annular respectively, wherein the first baffle and the second baffle are oppositely arranged on two sides of a wall surface and are respectively sleeved on a wall penetrating pipeline;
the opposite side edges of the first flexible structure and the second flexible structure are connected to two sides of a connecting plate, the connecting plate is fixedly connected to the wall surface, and a gap is formed between the connecting plate and the wall penetrating pipeline;
the first flexible structure comprises a first flexible outer ring and a first flexible inner ring which are respectively arranged on the periphery of the wall penetrating pipeline, the first flexible inner ring is positioned on the inner side of the first flexible outer ring, and a first cavity is formed between the first flexible outer ring and the first flexible inner ring; the first cavity is filled with damping materials;
the second flexible structure comprises a second flexible outer ring and a second flexible inner ring which are respectively arranged on the periphery of the through-wall pipeline, the second flexible inner ring is positioned on the inner side of the second flexible outer ring, and a second cavity is formed between the second flexible outer ring and the second flexible inner ring; the second cavity is filled with damping materials;
One side that first cavity and connecting plate are connected with one side that second cavity and connecting plate are connected corresponds the setting, be equipped with a plurality of through-holes along circumference on the connecting plate and be used for communicateing first cavity and second cavity.
2. The axial vibration reduction and isolation wall penetrating structure for the pipeline according to claim 1, wherein the wall penetrating pipeline comprises a transition pipe, the first baffle and the second baffle are respectively sleeved on the transition pipe, and two ends of the transition pipe are used for being correspondingly and fixedly connected with pipelines on two sides of the wall surface.
3. The pipe axial vibration reduction and isolation through-wall structure according to claim 1, wherein the first flexible outer ring and the first flexible inner ring are respectively of a curved structure along the axial direction of the through-wall pipe.
4. The pipe axial vibration reduction and isolation through-wall structure according to claim 1, wherein the second flexible outer ring and the second flexible inner ring are respectively of a curved structure along the axial direction of the through-wall pipe.
5. The piping axial vibration reduction isolation through-wall structure according to claim 1, wherein said first baffle plate is provided with a pressure sensor at a position corresponding to a first cavity or said second baffle plate is provided with a pressure sensor at a position corresponding to a second cavity.
6. A method for monitoring the sealing performance of a pipeline axial vibration reduction and isolation wall penetrating structure, which is based on the pipeline axial vibration reduction and isolation wall penetrating structure of any one of claims 1 to 5, and comprises the following steps:
initially setting a first pressure of a first side space of the wall surface and a second pressure of a second side space of the wall surface to be different from a third pressure in the first cavity and the second cavity;
monitoring a third pressure inside the first cavity and the second cavity in real time;
if the third pressure changes to the first pressure, the flexible structure on the first side of the wall surface leaks;
if the third pressure changes to the second pressure, the flexible structure on the second side of the wall leaks.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011378987.2A CN112628478B (en) | 2020-11-30 | 2020-11-30 | Pipeline axial vibration reduction and isolation wall penetrating structure and sealing performance monitoring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011378987.2A CN112628478B (en) | 2020-11-30 | 2020-11-30 | Pipeline axial vibration reduction and isolation wall penetrating structure and sealing performance monitoring method thereof |
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| CN112628478A CN112628478A (en) | 2021-04-09 |
| CN112628478B true CN112628478B (en) | 2022-07-29 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2014370264B2 (en) * | 2013-12-27 | 2019-03-28 | Conocophillips Company | Conduit seal assembly |
| GB201601820D0 (en) * | 2016-02-02 | 2016-03-16 | Rolls Royce Power Eng | An arrangement for adjoining a support structure to a pipe |
| CN106439239A (en) * | 2016-12-12 | 2017-02-22 | 中国船舶重工集团公司第七〇九研究所 | Pipeline penetration structure |
| CN108980471A (en) * | 2018-08-07 | 2018-12-11 | 中国船舶重工集团公司第七〇九研究所 | A kind of flexibility crossing cabin part peculiar to vessel |
| CN109654160B (en) * | 2019-01-16 | 2020-08-25 | 中国人民解放军海军工程大学 | Multistage elastic cabin-penetrating vibration isolation device based on pneumatic tire vibration reduction |
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