Elastic cabin-penetrating double-layer vibration isolation device for pipeline

An elastic and cabin-penetrating technology, applied in the direction of pipes, pipe elements, pipes/pipe joints/pipe fittings, etc., can solve the problem that the vibration reduction effect is difficult to meet the application requirements of low-noise submarines, and achieve the effect of optimizing the structure of the rubber layer

Inactive Publication Date: 2021-06-15
JIANGSU YANGZHOU HELI RUBBER PROD
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AI Technical Summary

Problems solved by technology

The vibration reduction effect of these two single-layer vibration isolation systems is difficult to meet the application requirements of low-noise submarines and other equipment

Method used

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  • Elastic cabin-penetrating double-layer vibration isolation device for pipeline
  • Elastic cabin-penetrating double-layer vibration isolation device for pipeline
  • Elastic cabin-penetrating double-layer vibration isolation device for pipeline

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Experimental program
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Embodiment Construction

[0029] The following combination Figure 1-5 , to further illustrate the present invention.

[0030] A kind of pipeline elastic cabin penetrating double-layer vibration isolation device, see figure 1 , including a welded gasket 1-1 coaxially assembled, a pair of lower shock absorbers 1-2, an upper shock absorber 1-3, a pair of threaded pipes 1-4, and a pair of compression screws 1-5 and a pair of flanges 1-8; the lower damping body 1-2 is installed on the two ports of the welding gasket 1-1;

[0031] The upper shock absorber 1-3 and the lower shock absorber 1-2 are installed together through a threaded pipe 1-4 and a compression screw disk 1-5.

[0032] The lower damping body 1-2 includes an inner steel structure 2-1, a rubber layer 2-2 and an outer steel structure 2-3, and the outer steel structure 2-3 and the inner steel structure 2-1 pass through the rubber layer 1. 2-2 vulcanization connection;

[0033] The upper damping body 1-3 includes a core tube 3-1, a pair of rub...

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Abstract

The invention discloses an elastic cabin-penetrating double-layer vibration isolation device for a pipeline. The invention relates to the technical field of vibration and noise reduction of ships and warships, in particular to an elastic cabin-penetrating double-layer vibration isolation device for a pipeline. Compared with a single-layer vibration isolation system, the elastic cabin-penetrating double-layer vibration isolation device for the pipeline has the advantage that the vibration reduction performance of a cabin-penetrating part of the pipeline can be effectively improved. Through a reasonable assembly design, the double-layer vibration isolation design is achieved between a core tube of an upper-layer vibration reduction body and a welding cushion cylinder, the mass of a middle mass body of the double-layer vibration isolation system can reach 30% or above of the mass of a 1-meter liquid passing tube, the double-layer vibration isolation system can be effectively formed, and according to actual measurement, the design scheme has the advantages that under a simulated actual ship working condition, the vibration isolation effect is not lower than 35dB (10Hz and 10kHz total level). By means of a limiting design and a rubber layer structure optimization design, compartment sealing not smaller than 3 MPa can be achieved under the condition that the vibration isolation effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of ship vibration reduction and noise reduction, in particular to a double-layer vibration isolation device for pipelines elastically piercing cabins. Background technique [0002] Mechanical noise is the main noise source of underwater acoustic radiation of ships in concealed navigation. Mechanical noise is mainly caused by the vibration of the auxiliary system, and the pipeline system, as an important channel for the vibration transmission of the auxiliary system, is a weak point in the control of mechanical noise. The pipeline system at the bulkhead penetration involves boundary conditions such as compartment sealing and compartment pressure. At present, the pipeline mainly adopts rigid penetrating parts or elastic penetrating parts based on single-layer vibration isolation. It is difficult to meet the design requirements of low-noise ships. [0003] Chinese patent 201910041120.9 discloses a sealed pipe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L5/02F16L55/035
CPCF16L5/02F16L55/035
Inventor 袁建东窦慧严井淳
Owner JIANGSU YANGZHOU HELI RUBBER PROD
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