Dual-protection self-balancing type bulkhead damping device with leakage monitoring function

Abstract

The invention provides a double-protection self-balancing type bulkhead damping device with a leakage monitoring function, which comprises a working corrugated pipe assembly, a protection corrugated pipe assembly, a ship bulkhead, a pipeline assembly and a leakage monitoring assembly, and is characterized in that the protection corrugated pipe assembly is arranged outside the working corrugated pipe assembly in a sleeving manner; the two ends, about the center line, of the ship bulkhead are symmetrically connected with a working corrugated pipe assembly and a protection corrugated pipe assembly, a certain distance is formed between the ship bulkhead and the pipeline assembly, and the working corrugated pipe assembly and the protection corrugated pipe assembly are both connected with the pipeline assembly. The leakage monitoring assembly is used for monitoring whether leakage occurs between the working corrugated pipe assembly and the protection corrugated pipe assembly or not. The working corrugated pipe assembly and the protection corrugated pipe assembly are adopted, dual protection can be achieved, axial and transverse multi-dimensional vibration and displacement of a pipe system can be efficiently absorbed at the same time, and meanwhile safety redundancy and early warning maintenance can be achieved through cooperation of the working corrugated pipe assembly and the protection corrugated pipe assembly and the leakage monitoring assembly.

Description

Technical Field

[0001] This invention relates to the field of pipeline compensator technology, and more specifically, to a dual-protection self-balancing bulkhead vibration damping device with leakage monitoring. Background Technology

[0002] Ships are known to have complex and extensive piping systems that connect various mechanical devices. These piping systems perform specific functions by transmitting energy flow, but this also makes them pathways for vibration and noise propagation. Figure 1 As shown, the existing piping system is directly welded to the bulkhead (CN214466965U), therefore the piping system has a significant impact on the vibration and noise of the ship.

[0003] The prior art disclosed in CN109654160B is a multi-stage elastic trans-cabin vibration isolation device based on pneumatic tire vibration reduction, including a shell, two end connectors, and vibration isolation components and two sealing components, all located inside the shell. The outer wall of the shell is fixedly connected to the cabin wall. The sealing components are symmetrically arranged around the vibration isolation components. The sealing components and the vibration isolation components are coaxially sleeved on the pipe, and their end faces are pressed together. The two end connectors are located at both ends of the shell and are connected to the sealing components. The vibration isolation components include a primary vibration isolation group, which includes multiple radially stacked primary air tires. Several circumferential sawtooth grooves are opened on the outer circumferential surface of the primary air tires. The prior art has the following main problems: (1) It mainly provides radial vibration isolation, and the axial vibration isolation effect is limited; (2) The structure is relatively complex and the cost is high; (3) It has a long axial space, occupies a large space, and is heavy; (4) The stiffness of the pneumatic tire depends on the internal air pressure and is easily affected by temperature changes, leakage or aging, resulting in stiffness fluctuations and unstable vibration isolation performance. During prolonged use, the pneumatic tire may fail due to fatigue or damage.

[0004] Therefore, this application is hereby submitted. Summary of the Invention

[0005] In view of this, the present invention aims to propose a dual-protection self-balancing bulkhead vibration damping device with leakage monitoring. This addresses the problems of existing devices, which primarily provide radial vibration isolation with limited axial vibration isolation; have complex structures and high costs; require significant axial space, resulting in large footprint and weight; and suffer from the fact that the stiffness of the pneumatic tire depends on internal air pressure and is susceptible to temperature changes, leakage, or aging, leading to stiffness fluctuations and unstable vibration isolation performance. Furthermore, the pneumatic tire may fail due to fatigue or damage during long-term use.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] A dual-protection self-balancing bulkhead vibration damping device with leakage monitoring includes a working bellows assembly, a protective bellows assembly, a ship bulkhead, a pipeline assembly, and a leakage monitoring assembly. The protective bellows assembly is sleeved outside the working bellows assembly. The working bellows assembly and the protective bellows assembly are symmetrically connected to both ends of the ship bulkhead about its centerline, and the ship bulkhead and the pipeline assembly have a certain distance between them. Both the working bellows assembly and the protective bellows assembly are connected to the pipeline assembly. The leakage monitoring assembly is used to monitor whether a leak occurs between the working bellows assembly and the protective bellows assembly.

[0008] This setup employs both working bellows assemblies and protective bellows assemblies, providing dual protection and significantly enhancing safety. The vibration damping device itself achieves self-balancing, preventing pressure thrust on ship bulkheads and piping components. It also efficiently absorbs multi-dimensional axial and lateral vibrations and displacements of the piping system. Furthermore, it features a simple structure and high reliability. Differential design methods can be used to ensure that the performance, stability, and fatigue life of the protective bellows assembly are superior to those of the working bellows. In addition, the working bellows assembly, protective bellows assembly, and leakage monitoring assembly work together to achieve safety redundancy and early warning maintenance.

[0009] Furthermore, the ship bulkhead is connected to the working bellows assembly and the protective bellows assembly via a second connecting assembly.

[0010] This feature can improve the connection stability between the ship's bulkhead and the working bellows assembly, as well as the protective bellows assembly.

[0011] Furthermore, the second connecting assembly includes a second flange, which is welded to the ship's bulkhead.

[0012] Furthermore, the second connecting assembly includes a second flange and a connecting part. One end of the second flange away from the centerline is connected to the working bellows assembly and the protective bellows assembly, and the other end of the second flange is connected to the ship's bulkhead through the connecting part.

[0013] Furthermore, the second flange is connected to both the working bellows assembly and the protective bellows assembly by welding.

[0014] Furthermore, the connecting part is a connecting bolt.

[0015] Furthermore, the working bellows assembly, the protective bellows assembly, and the pipeline assembly are connected by a first connecting assembly.

[0016] Furthermore, the protective bellows assembly includes a first end connector and a protective bellows. The first connecting assembly is connected to one end of the protective bellows via the first end connector, and the other end of the protective bellows is connected to a second flange.

[0017] Furthermore, the protective corrugated pipe is connected to the first end pipe by welding.

[0018] Furthermore, the leakage monitoring component is mounted on the first end connector.

[0019] Furthermore, the first connecting assembly includes a first flange, and the first flange is connected to the working bellows assembly and the protective bellows assembly by welding.

[0020] Compared with existing technologies, the self-balancing bulkhead vibration damping device with dual protection and leakage monitoring described in this invention has the following advantages:

[0021] 1) The present invention uses a working bellows assembly and a protective bellows assembly, which not only provides double protection and greatly increases safety, but also the vibration damping device can achieve a self-balancing effect, without generating pressure thrust on the ship's bulkhead and pipeline assembly. It can also simultaneously and efficiently absorb the axial and lateral multi-dimensional vibration and displacement of the piping system, and has the characteristics of simple structure and safety and reliability.

[0022] 2) This invention employs a working bellows assembly, a protective bellows assembly, and a leakage monitoring assembly in combination to achieve safety redundancy and early warning maintenance; the working bellows assembly and the protective bellows assembly are arranged in parallel in a "coaxially nested" manner, which greatly shortens the overall axial length of the device, occupies less space, and is more compact; the stability and fatigue performance of the protective bellows are higher than those of the working bellows, and the working bellows and the protective bellows are designed differently, resulting in more stable performance and longer service life for the working bellows assembly and the protective bellows assembly;

[0023] 3) The bulkhead vibration reduction device of the present invention changes the rigid connection between the bulkhead and the pipeline system, which greatly reduces the vibration noise transmitted from the pipeline system to the bulkhead and improves the stealth performance of the ship.

[0024] 4) This invention uses a working bellows and a protective bellows. Compared with conventional straight pipe pressure balance expansion joints, the balance wave is eliminated, which effectively reduces the size and weight of the device and makes it easier to install and use in limited spaces. Attached Figure Description

[0025] Figure 1 A diagram illustrating the direct welding method used to connect the existing piping system to the bulkhead;

[0026] Figure 2 A schematic diagram of the existing external pressure type straight pipe pressure balance expansion joint;

[0027] Figure 3 A schematic diagram of the existing internal pressure type straight pipe pressure balance expansion joint;

[0028] Figure 4 This is a schematic diagram of the overall structure of a bulkhead vibration damping device according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the overall structure of a bulkhead vibration damping device according to another embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the overall structure of a bulkhead vibration damping device according to another embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-First flange; 2-First end connector; 3-Working bellows; 31-First working bellows; 32-Second working bellows; 4-Protective bellows; 5-Second flange; 51-Connecting bolt; 6-Ship bulkhead; 7-Centerline; 8-Pipeline assembly; 9-Elastic element interlayer monitoring table; 10-Second end connector; 11-End pipe reinforcing ring; 12-Bellows reinforcing ring; 13-Connecting pipe. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Furthermore, a brief explanation of the orientations involved in the following specific embodiments is provided: the directions or positional relationships indicated by "up," "down," "left," "right," etc., mentioned in the embodiments refer to the orientations or positional relationships shown in the accompanying drawings.

[0034] Example 1

[0035] Existing straight-pipe pressure bellows balanced expansion joints are conventionally divided into two types: external pressure and internal pressure. External pressure type straight-pipe pressure balanced expansion joints ( Figure 2 It consists of a set of working bellows and a set of balancing bellows, mainly used to absorb axial displacement and balance the pressure thrust of the bellows. Internal pressure type straight pipe pressure-balanced expansion joint ( Figure 3 It consists of two working bellows, a middle balancing bellows, tie rods, end plates, and other structural components. It is mainly used to absorb axial pressure and balance the pressure thrust of the bellows.

[0036] To achieve pressure balance, conventional straight-pipe pressure-balanced bellows expansion joints require not only a working wave to meet displacement compensation needs but also a separate set of balancing waves to balance pressure thrust. This also necessitates additional constraint components, resulting in relatively high manufacturing costs. For internal pressure straight-pipe pressure-balanced expansion joints, the outer diameter of the balancing wave is much larger than that of the working wave, leading to an excessively large overall outer diameter and heavier equipment.

[0037] This embodiment proposes a dual-protection self-balancing bulkhead vibration damping device with leakage monitoring. The damping element uses a bellows assembly, which, compared to conventional straight-pipe pressure-balanced expansion joints, eliminates the balancing wave, effectively reducing the device's overall size. Simultaneously, this device can compensate for pipeline system displacement, reduce vibration noise transmitted from the pipeline system to the bulkhead, improve the ship's stealth performance, and enhance the bulkhead's vibration damping capability.

[0038] Specifically, the bulkhead vibration damping device includes a working bellows assembly, a protective bellows assembly, a ship bulkhead, a pipeline assembly, and a leakage monitoring assembly. The protective bellows assembly is sleeved on the outside of the working bellows assembly. The working bellows assembly and the protective bellows assembly are symmetrically connected to both ends of the ship bulkhead about the centerline, and the ship bulkhead and the pipeline assembly have a certain distance. The working bellows assembly and the protective bellows assembly are both connected to the pipeline assembly. The leakage monitoring assembly is used to monitor whether a leak occurs between the working bellows assembly and the protective bellows assembly.

[0039] This setup employs a working bellows assembly and a protective bellows assembly, providing dual protection and enabling the simultaneous and efficient absorption of multi-dimensional axial and lateral vibrations and displacements in the piping system. Furthermore, in conjunction with a leak monitoring assembly, it achieves safety redundancy and early warning maintenance. The working and protective bellows assemblies are arranged in parallel in a coaxial configuration, which significantly shortens the overall axial length of the device, resulting in a smaller, more compact footprint. Moreover, the working and protective bellows assemblies offer greater performance stability and a longer lifespan.

[0040] Specifically, the ship bulkhead is connected to the working bellows assembly and the protective bellows assembly via a second connecting assembly.

[0041] Specifically, the first connecting assembly includes a first flange 1, and the first flange 1 is connected to the working bellows assembly, the protective bellows assembly, and the pipeline assembly by welding.

[0042] As one embodiment of this application, such as Figure 4 As shown, the second connecting assembly includes a second flange 5, and both the left and right ends of the ship's bulkhead are connected to the second flange by welding.

[0043] As another embodiment of this application, such as Figure 5 As shown, the second connecting assembly includes a second flange 5 and a connecting part. One end of the second flange 5 away from the center line is connected to the working bellows assembly and the protective bellows assembly, and the other end of the second flange 5 is connected to the ship's bulkhead 6 through the connecting part.

[0044] Specifically, the second flange 5 is connected to both the working bellows assembly and the protective bellows assembly by welding.

[0045] Specifically, the connecting part is the connecting bolt 51.

[0046] Specifically, the working bellows assembly, the protective bellows assembly, and the pipeline assembly are connected by a first connecting assembly.

[0047] Specifically, the protective bellows assembly includes a first end connector 2 and a protective bellows 4. The first connecting assembly is connected to one end of the protective bellows through the first end connector, and the other end of the protective bellows is connected to a second flange.

[0048] Specifically, the protective corrugated pipe 4 is connected to the first end pipe 2 by welding.

[0049] Specifically, the working bellows assembly includes a working bellows 3, and the two ends of the working bellows 3 are respectively connected to a first flange 1 and a second flange 5.

[0050] As another embodiment of this application, such as Figure 6 As shown, the ship's bulkhead 6 and the second flange 5 are connected by welding. The protective bellows is connected to the second flange via a second end pipe 10. The first end pipe, the second end pipe, and the protective bellows are all connected by end pipe reinforcing rings 11. A bellows reinforcing ring 13 is provided on the protective bellows 4, and the bellows reinforcing ring is close to the first end pipe and the second end pipe. This design allows for performance differences between the inner and outer bellows, resulting in the outer bellows exhibiting significantly higher performance and fatigue life stability than the inner bellows. Even if the inner bellows fails, the outer bellows can still operate normally, ensuring safety.

[0051] Specifically, the working bellows 3 includes a first working bellows 31 and a second working bellows 32, and the first bellows and the second bellows are connected by a connecting pipe 13.

[0052] Specifically, the leakage monitoring component is installed on the first end connector. The leakage monitoring component includes an elastic element interlayer monitoring meter 9. The working bellows 3 and the protective bellows 4 are configured as a dual structure. By opening a hole in the first end connector 2 and installing the elastic element interlayer monitoring meter 9, the internal weight can be monitored for damage and leakage.

[0053] Bulkhead vibration reduction principle: In operation, the first flanges at both ends of the bulkhead vibration reduction device are connected to the pipe assembly. The medium with a pressure of P1 flows inside the pipe assembly 8. The vibration noise transmitted by the pipe assembly 8 is transmitted to the ship bulkhead 6 through the working bellows 3 and the protective bellows 4. The working / protective bellows are flexible devices that can cause a sudden change in the connection stiffness between the ship bulkhead 6 and the pipe assembly 8, thereby reducing the transmission of vibration noise.

[0054] Self-balancing principle: In operation, the first flanges 1 at both ends of the bulkhead vibration damping device are connected to the pipe assembly 8. The space between the working bellows 3 and the protective bellows 4 is filled with pressure P2, and the medium with pressure P flows inside the pipe assembly 8. To achieve pressure-thrust balance, the working bellows 3 and the protective bellows 4 at both ends of the ship bulkhead 6 are identical. The pressure thrust generated by pressure P2 in the working bellows 3 and the protective bellows 4 at both ends of the ship bulkhead is the same in magnitude but opposite in direction. The force is transmitted through the first flanges and the pipe assembly, thereby achieving force balance.

[0055] Axial movement: When the working bellows 3 and protective bellows 4 on the left side of the ship's bulkhead are stretched, the pressure thrust caused by P2 and the pipe assembly 8 cause the working bellows 3 and protective bellows 4 on the right side to compress, and the changes in both are the same. According to the above balance principle, the pressure balance is maintained throughout the axial movement and until the final position.

[0056] Lateral movement: The two working bellows 3, the protective bellows 4, the first end connector 2, and the ship's bulkhead 6 form a complex structure. When the pipeline undergoes lateral displacement, it pulls the first flanges 1 at both ends to move. The distance Y between the ship's bulkhead 6 and the pipeline assembly should be greater than the maximum lateral working displacement.

[0057] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A double-guarded self-balancing bulkhead damper with leak monitoring, characterized by, The utility wave tube assembly, the protection wave tube assembly, the ship bulkhead (6), the pipeline assembly, the leakage monitoring assembly, the protection wave tube assembly is sleeved outside the utility wave tube assembly, the ship bulkhead (6) is connected with the utility wave tube assembly, the protection wave tube assembly about the both ends of center line (7) symmetry, and the ship bulkhead (6) has a certain interval with the pipeline assembly, the utility wave tube assembly, the protection wave tube assembly is connected with the pipeline assembly, the leakage monitoring assembly is used to monitor whether the utility wave tube assembly and the protection wave tube assembly leak.

2. The bulkhead damping device of claim 1, wherein, The ship bulkhead (6) is connected with the utility wave tube assembly and the protection wave tube assembly through the second connecting assembly.

3. The bulkhead damping device of claim 2, wherein, The second connecting assembly includes a second flange (5), and the second flange (5) is connected with the ship bulkhead (6) in a welding mode.

4. The bulkhead damping device of claim 2, wherein, The second connecting assembly includes a second flange (5) and a connecting portion, one end of the second flange (5) away from the center line is connected with the utility wave tube assembly and the protection wave tube assembly, and the other end of the second flange (5) is connected with the ship bulkhead (6) through the connecting portion.

5. The bulkhead damping device of claim 4, wherein, The second flange (5) is connected with the utility wave tube assembly and the protection wave tube assembly in a welding mode.

6. The bulkhead damping device of claim 4, wherein, The connecting portion is a connecting bolt (51).

7. The bulkhead damping device of claim 4, wherein, The utility wave tube assembly, the protection wave tube assembly and the pipeline assembly are connected through the first connecting assembly.

8. The bulkhead damping device of claim 7, wherein, The protection wave tube assembly includes a first end connector (2) and a protection wave tube (4), the first connecting assembly is connected with one end of the protection wave tube (4) through the first end connector (2), and the other end of the protection wave tube (4) is connected with the second flange (5).

9. The bulkhead damping device of claim 8, wherein, The protection wave tube (3) is connected with the first end connector (2) in a welding mode.

10. The bulkhead damping device of claim 8, wherein, The leakage monitoring assembly is arranged on the first end connector (2).

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