External-pressure second-level vibration-isolating cabin-penetrating connecting pipe for ship

Abstract

The invention discloses an external-pressure second-level vibration-isolating cabin-penetrating connecting pipe for a ship. The connecting pipe comprises a connecting pipe body, a connecting pipe assembly and composite pressure-welding flanges, wherein the connecting pipe assembly penetrates through the connecting pipe body, and two ends of the connecting pipe assembly are fixed to the connectingpipe body through the composite pressure-welding flanges. According to the external-pressure second-level vibration-isolating cabin-penetrating connecting pipe for the ship, the influence of bulkheadvibration on a pipeline can be relieved, and meanwhile the influence of pipeline vibration on a bulkhead can be relieved; and vibration noise can be lowered by more than 7-10 decibels.

Description

technical field [0001] The invention relates to a marine external-pressure two-stage vibration-isolation through-cabin connector, in particular to a marine external-pressure two-stage vibration-isolation through-cabin connection with watertight function, which belongs to the technical field of ship vibration reduction. Background technique [0002] Marine pipelines perform missions for ships, providing and transporting a steady stream of various pressure liquids and gases such as fresh water, hot water, fresh air, and compressed air for the normal life and work of personnel; such as supplying fuel and lubrication for main engines and auxiliary engines Oil; provide hydraulic oil for the control system of the main and auxiliary machines; provide hydraulic oil for the pitch control propeller; provide pressure liquid and lubricating oil for deck machinery such as steering gear, windlass, crane, etc.; provide main engine start, siren, and pneumatic machinery compressed air etc. ...

AI Technical Summary

Problems solved by technology

However, due to the large number of various cabin equipment used in ships, various intricate piping systems are caused, and various piping will inevitably pass through the hull structure and hull bulkheads, especially when passing through watertight bulkheads that require The tank pipeline must be treated with watertight structure

At present, the practice of domestic and foreign shipbuilding circles for the passage pipe of steel watertight bulkhead is to directly weld the passage pipe to the watertight bulkhead in order to ensure its watertightness and firmness without vibration isolation measures.

However, due to the effect of wind, wave and current on the hull, the working movement of various machinery in the hull and the flow of fluid in the pipeline, complex vibrations between the connecting pipe and the watertight bulkhead are caused, resulting in damage to the cabin or pipe damage. It may even cause a major disaster; for the pipeline conveying power fluid, it may also cause relatively large vibration and noise, which will cause a bad environment in the workplace and mechanical place, and will not only cause adverse effects and damage to the liquid conveyor , will also cause adverse effects and damage to other equipment, and at the same time cause physical and mental damage to the crew. In severe cases, the ship will not be able to complete the mission normally, and it is especially not conducive to the stealth of the military ship, which seriously restricts the combat capability of the combat ship.

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