Low-pressure carbon dioxide extinguishing agent storage device

Abstract

The invention relates to a fire-protection fire-extinguishing device and discloses a low-pressure carbon dioxide extinguishing agent storage device, comprising a built-in evaporator. The low-pressure carbon dioxide extinguishing agent storage device is characterized in that the evaporator comprises a shunt, a collecting pipe and a plurality of groups of snakelike coils which are connected in parallel between the shunt and the collecting pipe and are vertically arranged. For the device, the structure of the built-in evaporator is reasonable, the pressure loss is small, the installation is simple and the cold exchange efficiency is high.

Description

technical field [0001] The invention relates to fire-fighting equipment, in particular to a low-pressure carbon dioxide fire extinguishing agent storage device. Background technique [0002] At present, in the low-pressure carbon dioxide fire extinguishing agent storage device, the liquid carbon dioxide fire extinguishing agent is stored at low temperature and low pressure for a long time through the refrigeration system, and the evaporator in the storage device is one of the key components of the refrigeration system. Its design The structure and installation method in the storage tank will directly affect the effective utilization of the cooling capacity of the compressor. At present, the structure adopted by the evaporator is generally a single serpentine tube type, which is installed horizontally at a position about 200mm below the full liquid level in the storage tank. The main problems of this structure and installation method are as follows: (1) single serpentine tube...

AI Technical Summary

Problems solved by technology

At present, the structure adopted by the evaporator is generally a single serpentine tube type, which is installed horizontally at a position about 200mm below the full liquid level in the storage tank. The main problems of this structure and installation method are as follows: (1) single serpentine tube For high-power compressors, the tubular evaporator has a longer length due to the need for evaporation area, and the pressure loss generated during the refrigerant transmission process is too large, resulting in the refrigerant not being able to return to the compressor completely in time during the working process, and the (2) The evaporator is installed horizontally at a position about 200mm below the full liquid level in the storage tank. When the liquid level in the tank drops below the evaporator, the evaporator will be completely exposed in the gaseous carbon dioxide, which will lead to cold The capacity exchange is poor, so that the cooling capacity of the compressor cannot be fully utilized, and the compressor may be burned out during long-term work

The occurrence of the above two situations will directly affect the storage state of carbon dioxide in the storage device, which may lead to the loss of carbon dioxide fire extinguishing agent and affect the insufficient amount of carbon dioxide fire extinguishing agent

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