Explosion-proof device for ship fuel-gas diesel engine exhaust pipe

Abstract

The invention discloses an explosion-proof device for a ship fuel-gas diesel engine exhaust pipe. The explosion-proof device comprises a housing, an inner baffle and an exhaust pipe flange. The exhaust pipe flange is arranged at the end of the ship fuel-gas diesel engine exhaust pipe in a sleeving manner. An outer annular plate is arranged at the outer side of the exhaust pipe flange. The outer annular plate is annular and provided with a through hole matched with the inner baffle. A groove is formed in the edge of the inner baffle and internally provided with a sealing ring. The inner baffle is embedded in the through hole of the outer annular plate and hinged to the outer annular plate. Under impact of air flow, the inner baffle (3) can rotate relative to the outer annular plate (2). The housing is arranged at the outer side of the outer annular plate and provided with a pressure sensor through which internal pressure of the housing can be sensed. By means of the explosion-proof device for the ship fuel-gas diesel engine exhaust pipe, the purposes that explosion pressure in the ship fuel-gas diesel engine exhaust pipe is released as soon as possible, furthermore, personnel safety is protected, and equipment is prevented from being destroyed can be achieved. The explosion-proof device is of a pure mechanical structure, simple in structure and great in safety and reliability; the explosion-proof device can be used repeatedly; and routine maintenance cost is extremely low.

Description

technical field [0001] The invention belongs to the technical field of ships and relates to a ship gas diesel engine, in particular to an explosion-proof device for an exhaust pipe of a ship gas diesel engine. Background technique [0002] With the increasingly stringent requirements for ship exhaust emission restrictions, the use of natural gas power systems for ships has become the development trend of ship power in the future. Due to its high calorific value, no sulfur, clean combustion, and low emissions, natural gas will become the preferred fuel for future green ships. The state has always strongly supported the development of ships powered by natural gas fuel. In 2013, the Ministry of Transport put forward "Several Opinions on Promoting the Transformation, Upgrading and Healthy Development of the Shipping Industry" to encourage and accelerate the application and development of liquefied natural gas in the water transportation industry. [0003] A major problem in th...

AI Technical Summary

Problems solved by technology

The current mainstream marine large-scale pure gas or (fuel / natural gas) dual-fuel diesel engines will inevitably have natural gas slippage (part of the natural gas is not burned but is discharged with the scavenging) and the cylinder misfires, resulting in natural gas entering the exhaust pipe.

Once the natural gas encounters an open flame, it will cause an explosion, damage equipment and exhaust pipes, and endanger personnel safety

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