Control method of air supply explosion-proof marine air conditioning system

Abstract

The invention discloses an air supply explosion-proof marine air conditioning system and a control method thereof. The air conditioner ventilation system comprises an independent air conditioner outdoor unit arranged outside a cabin of an explosion-proof place, an explosion-proof air conditioner indoor unit, an air inlet electric air door and an air exhaust mechanism, wherein the explosion-proof air conditioner indoor unit, the air inlet electric air door and the air exhaust mechanism are arranged in the cabin; the independent air conditioner outdoor unit comprises a refrigeration assembly andan electrical control box. The explosion-proof air conditioner indoor unit comprises an evaporator, a thermostatic expansion valve, an explosion-proof fan, an electric heater and a temperature sensorused for detecting the temperature of return air in the cabin of the explosion-proof position, the refrigeration assembly is communicated with the evaporator through a refrigerant pipeline penetrating through the cabin wall, and the thermostatic expansion valve is fixed to an inlet of the evaporator. The control method comprises a manual control mode and an automatic control mode, through combined control of air conditioning and ventilation, the requirement for the storage temperature of the explosion-proof objects is met, long-time accumulation of flammable and explosive gas is avoided, thesafety of the explosion-proof cabin is guaranteed, and the control method is high in automation degree, simple in logic setting, easy to operate and reliable in control.

Description

technical field [0001] The invention relates to the technical field of ship ventilation, in particular to an explosion-proof air-supply marine air-conditioning system and a control method thereof. Background technique [0002] Explosion-proof spaces on ships mainly include ammunition compartments, jet fuel compartments, oil pumping stations, oil storage compartments, hangars and other hazardous areas that produce flammable and explosive gases. In order to ensure the storage environment conditions of explosive materials, it is necessary to set up an air-conditioning and ventilation system. The air-conditioning and ventilation system must not only effectively control the ambient temperature of the explosion-proof cabin within the normal range of use, but also quickly remove flammable, explosive mixtures formed by steam and air and other dangerous gases. It is discharged overboard to reduce the concentration of flammable and explosive gases in the cabin. At the same time, it mu...

AI Technical Summary

Problems solved by technology

[0004] 1. The air-conditioning equipment in explosion-proof spaces is of indirect type, the refrigerant water is provided by chillers, and the hot coal water is provided by circulating water heating devices, so the air-conditioning equipment cannot independently refrigerate or heat, and there are limitations in its use, such as cold water on board during transitional seasons When the unit or circulating water heating device is not running, it is difficult to maintain the ambient temperature in the explosion-proof cabin within the normal range

[0005] 2. The temperature control of the air-conditioning equipment in the explosion-proof space is very rough, and the start and stop of the air-conditioning equipment are controlled only by the return air temperature at a single point, resulting in frequent start and stop of the air-conditioning equipment, which affects the service life of the equipment

[0006] 3. The electrical connection and control of air-conditioning equipment and mechanical ventilation equipment in explosion-proof spaces are independent, and manual operation is required for cabin ventilation, cooling or heating, and switching between working conditions. The ventilation equipment operates at the same time, that is, the cabin is open for cooling or heating, and the ambient temperature in the explosion-proof cabin cannot be guaranteed to be within the normal range

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