lng power ship double wall pipe ventilation system

A technology of ventilation system and double-wall pipe, which is applied in the direction of charging system, combustion engine, engine components, etc., can solve problems such as difficult selection of exhaust fan, and achieve the effect of reducing risks

Active Publication Date: 2021-10-15
SUNRUI MARINE ENVIRONMENT ENG
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a double-wall pipe ventilation system for LNG powered ships, which aims to solve the deficiencies in the above-mentioned background technology. The space is ventilated to avoid gas leakage to the engine room, and at the same time, a ventilation air inlet pipeline is added at the inlet of the exhaust fan, which solves the problem of difficult selection of the exhaust fan

Method used

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  • lng power ship double wall pipe ventilation system
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Embodiment Construction

[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention are used to distinguish similar objects and not necessarily to describe specific sequence or sequence.

[0025] Such as figure 1 As shown, the LNG power ship double-wall pipe ventilation system provided by the embodiment of the present invention includes a first ventilation air inlet pipeline 1, a flow meter 3, a first double-wall pipe 8, a second double-wall pipe 9, gas equipment 14, Gas inlet pipeline 19, GVU (GasValves Unit, gas valve group unit) valve group 35, pneumatic control valve 26, second ventilation air inlet pipeline 27, first exhaust f...

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Abstract

The invention provides a double-wall pipe ventilation system for an LNG powered ship, which includes a first ventilation air inlet pipeline, a flow meter, a first double-wall pipe, a second double-wall pipe, gas equipment, a gas inlet pipeline, a GVU valve group, Pneumatic regulating valve, second ventilation air inlet line, first exhaust fan and ventilation air outlet line. The double-wall pipe ventilation system for an LNG-powered ship provided by the present invention supplies gas to gas equipment by providing double-wall pipes in the engine room, and utilizes the good protection function of the double-wall pipes to reduce the risk of gas leakage to the engine room. The annular space in the double-wall pipe is mechanically exhausted by setting the exhaust fan to maintain the negative pressure state of the annular space, so as to ensure that the gas can be discharged outboard at the fastest speed once it leaks.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a double-wall pipe ventilation system for an LNG power ship. Background technique [0002] With the rapid development of the shipping industry in recent years, the problem of marine pollution has become increasingly serious, and a large amount of untreated waste gas has been discharged into the atmosphere, causing serious damage to the ocean and even the global ecological environment. In order to reduce the pollution caused by ship exhaust gas to the environment, the International Maritime Organization has proposed specific emission limits, hoping to improve the ecological environment of the ocean through the revision of the emission limits. In order to adapt to changes in emission restrictions, ships began to use cleaner and green energy instead of traditional energy, LNG (Liquefied Natural Gas, liquefied natural gas) has become the most suitable green fuel, and dual-fuel engines ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M21/02
CPCF02M21/02F02M21/0215Y02T10/30
Inventor 戴冰赵超张建哲王廷勇
Owner SUNRUI MARINE ENVIRONMENT ENG
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