Ship pipelines are pipes used to connect various mechanical equipment on ships, and are used to transmit water, oil, gas and other related working fluids.
There are two main categories of marine piping: power piping and marine system piping.
Power pipelines are various pipelines used to serve the main engine and auxiliary engines, including fuel oil, lubricating oil, cooling water, compressed air, exhaust, waste heat and other pipelines. Ship system piping is to improve the ship's anti-sinking and stability, in order to meet the normal living needs of the crew and passengers.
There are many system pipelines in the ship system, including the water supply system for supplying seawater and fresh water to the whole ship; the ballast water system for regulating the ballast of the ship; the bilge water discharge system for removing bilge water; Provides compressed air systems for compressed air; fire protection systems for fire fighting, etc. Most of the equipment used in these systems, such as pumps and compressors, are electric and can be automatically controlled.
The main requirements for ship piping are as follows:
1. The selection of materials for ship piping must be inspected and approved by the shipowner and relevant classification societies.
2. For general ships,
thickened seamless steel pipes are required to be used for bilge water piping, deck washing piping, air piping, measuring piping, injection piping, sanitary water piping, seawater piping, fire piping and foam piping.
3. The exhaust pipe and flange should be painted with high temperature resistant aluminum powder paint or zinc powder paint, and then the exterior should be wrapped with composite silicate heat insulation material with a thickness of more than 75mm, and the surface should be painted with high temperature resistant aluminum powder paint twice. , Wrap it with galvanized iron, and the surface temperature after wrapping does not exceed 60 degrees Celsius when the host is under full load.
4. The fresh water cooling outlet pipe of the main engine, the steam pipe system and the steam accompanying pipe system should be wrapped with appropriate materials for heat insulation to prevent personnel from being scalded.
5. The length of each pipe is appropriate to facilitate the maintenance of the pipe system in the future.
6. Each pipe can only have one elbow, and no more than two elbows in special cases.
7. The type of tank joint pipe is to be approved by the shipowner.
8. The material of reducing joints and elbows is required to be the same as that of the pipe, and the wall thickness should be at least equal to or greater than that of the pipe.
Marine valve:
The valve must be a marine valve approved by the relevant classification society.
