Diesel engine inlet air humidifying system with high humidifying efficiency

Abstract

The invention discloses a diesel engine inlet air humidifying system with high humidifying efficiency. The diesel engine inlet air humidifying system comprises a water spray pipeline, an air inlet pipeline and a main control box. A water tank, a high-pressure micro mist device and a water spraying device are sequentially arranged on the water spraying pipeline in the water path direction. The main control box is connected with the high-pressure micro mist device and controls starting, stopping and the water amount of the water spraying device through a solenoid valve. The diesel engine inlet air humidifying system with high humidifying efficiency has the advantages of being good in water spraying atomizing effect, high in maximum humidifying amount, flexibly controllable in water spray amount, stable, reliable, high in efficiency and the like, and can meet the requirement for the inlet air moisture content in engineering application.

Description

technical field [0001] The invention relates to an intake air humidification system, in particular to a diesel engine intake air humidification system with high humidification efficiency. Background technique [0002] During ship transportation, diesel engines will produce harmful gas and particulate matter emissions due to incomplete combustion of fuel, such as volatile organic compounds, chlorofluorocarbons, carbon monoxide, carbon dioxide, sulfur oxides, nitrogen oxides, smoke, etc. Among these pollutants, nitrogen oxides and sulfur oxides are the most harmful. Nitrogen oxides are mainly composed of NO and NO 2 Composition, they are commonly referred to as NO x . NO x The damage to the environment is great, not only endangering the human respiratory system, but also one of the main factors for the formation of photochemical smog near the ground. According to the data provided by Norway to the International Maritime Organization, the world's ships emit NO x up to 6.02...

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Problems solved by technology

[0006] (1) Spray water directly at the intake port. For marine diesel engines, if water is sprayed directly at the intake port, due to the constraints of the size of the intake port, the number of nozzles allowed to be arranged is limited, and the atomized droplets are prone to collide with the wall. The condensation, the contact surface between intake air and atomized droplets is also small, and the efficiency of the entire intake humidification system is low

[0007] (2) The spraying method of water adopts the form of aerosol spraying, which has poor atomization quality and low water utilization rate, and it is necessary to control the water spray volume by controlling the pressure of the water circuit and the air circuit. complex

[0008] (3) The intake air is not heated, but the intake air is sprayed and humidified directly. The water utilization rate of the intake air humidification system is low; and the intake air temperature directly determines the maximum moisture absorption capacity of the intake air. The air is heated, it is difficult to meet the requirements of the moisture content of the intake air in engineering applications

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