Control method of air-conditioning ventilation system for anti-explosion place of ship

Abstract

The invention discloses an air-conditioning ventilation system for an anti-explosion place of a ship and a control method thereof. The air-conditioning ventilation system comprises an independent airconditioner external unit arranged outside a cabin of the anti-explosion place, an anti-explosion air conditioner internal unit, an air-entering electric ventilation door and an air exhausting mechanism which are arranged in the cabin; the independent air conditioner includes a refrigeration assembly and an electric control box, and the anti-explosion air conditioner internal unit includes an evaporator, a thermostatic expansion valve, an anti-explosion draught fan, an electric heater, and a temperature sensor for detecting the air-returning temperature in the cabin of the anti-explosion place; and the refrigeration assembly communicates with the evaporator through a refrigerant pipe penetrating through a bulkhead, and the thermostatic expansion valve is fixed at an entrance of the evaporator. The control method comprises two control modes including a manual operation mode and an automatic mode, through the combined control of air conditioning and ventilation, the requirement of the storage temperature of anti-explosion items is ensured, long-time accumulation of flammable and explosive gas is avoided, the safety of the anti-explosion cabin is ensured, and the control method is high in degree of automation, simple in logic setting, easy to operate and reliable in control.

Description

[0001] The patent application for this invention is a divisional application of the invention patent "An Air Conditioning and Ventilation System for Explosion-proof Spaces of Ships and Its Control Method" with the application number 201710832925.6 on September 15, 2017. technical field [0002] The invention relates to the technical field of ship ventilation, in particular to an air-conditioning and ventilation system for explosion-proof spaces of ships and a control method thereof. Background technique [0003] 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 o...

AI Technical Summary

Problems solved by technology

[0005] 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

[0006] 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

[0007] 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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