Explosion-proof cold storage

Explosion-proof cold storage

Explosion-proof cold storage is mainly used for the storage of flammable and explosive dangerous products, explosion-proof mark for IICT4 explosion-proof grade, usually storage of some electrolyte, flavor, alcohol, chemical, electronic, ethanol and other dangerous goods, explosion-proof cold storage construction safety requirements are very strict, need to have constant temperature, fire, unloading, early warning, alarm and prevent inventory spillovers and other functions.

First, explosion-proof cold storage design features:

Some products stored in explosion-proof cold storage are more dangerous, so the design has high requirements, usually the use of multi-functional microelectronics integrated explosion-proof devices and optimized explosion-proof technology, all-optical isolation microwatt level safety control circuit, multiple safety protection technology, standardization and other technologies and technology imported compressor, The volume and weight of the explosion-proof system is only one tenth of the traditional explosion-proof technology. The safety of the microwatt level all-optical isolation intrinsic safety control circuit is several weights higher than that of the traditional technology, and the system is cheap.

Explosion-proof cold storage by a number of independent explosion-proof unit composed of refrigeration system, the use of imported compressor and refrigeration, so reliable work, good maintainability, good safety, explosion-proof cold storage using pressure, temperature multiple detection and protection technology, limit the surface temperature: abnormal working conditions and gas tight explosion-proof structure leakage can stop protection. At the same time, the safety technology such as anti-ignition floor is used, so the safety performance is good, and the user can also install the temperature upper and lower limit alarm device. Flexible configuration: Users can flexibly choose the volume, number of units, installation methods and auxiliary devices according to demand, strong applicability, easy to disassemble, move, expand and so on.

The fire extinguishing device in the explosion-proof cold storage is usually a carbon dioxide gas fire extinguishing device, which ADAPTS to the automatic fire extinguishing function at various temperatures. In this way, a pressure relief and explosion device must be installed on the cold storage body, which must be calculated according to the internal surface area of the cold storage and the amount of carbon dioxide gas emitted when extinguishing the fire, and the direction of pressure relief and explosion and the space to be relieved must be safe. In the design of explosion-proof cold storage, it is necessary to consider the self-rescue and alarm functions of the cold storage itself. For example, when there is leakage of items in the cold storage, the cold storage door will automatically close within 6 seconds to cut off the cold storage power supply and alarm output, the fire extinguishing device will automatically open within 30 seconds, and the pressure relief device will automatically open according to the pressure in the storage to adjust the pressure in the storage.

Explosion-proof cold storage should be built below the external level ground. That is to say, when the storage material in the warehouse overflows, it will not drain to other places, and it will always wait for processing in place. This is the core material of the library board must be a certain structure, because this kind of flammable and explosive corrosion is super strong, the galvanized steel plate on the surface of the library board is very tolerant of decay and rust, and the strength can only be guaranteed by the core material of the library board.

Second, explosion-proof cold storage construction function:

Flame retardant cold storage insulation materials: select B1 level flame retardant insulation board, cold storage wall parts are: 100mm thick double-sided color steel plate in the middle of the polyurethane sandwich board. Cold storage roof part adopts: 100mm thick double-sided color steel plate with polyurethane sandwich board. Electrostatic treatment of explosion-proof cold storage; Cold storage board Each plate must be connected to a reliable ground terminal with a stainless steel ground terminal. The ground should be antistatic to prevent friction from sparking. Selection of cold storage insulation board: low thermal conductivity, good thermal insulation effect. When the rigid polyurethane foam density is 38~42kg/m3, the thermal conductivity is only 0.018~0.029W/ (m/K), the thermal conductivity is low in all thermal insulation materials, and its thermal performance is superior. The insulating core material of the library board itself must have the functions of insulation, fire resistance, structure and support of its own structure. Thus, the strength of the library itself is guaranteed to remain unchanged when an accident occurs. The library board must have the function of the cold storage board and the function of the firewall. Cold storage floor: After the ground adopts 2mmSBS waterproof layer, 10cm extruded board is laid on it for heat preservation, and then a layer of waterproof film is laid on the extruded board, and 10cm concrete emery floor is laid. The extruded panel adopts flame-retardant B1 brand products.

Explosion-proof refrigeration equipment selection: choose German Bitzer explosion-proof unit, product manufacturing standards: GB3836.1, GB3836.2, GB3836.4, GB3836.9, etc., product installation and construction standards: GB3836.15-2000, GB/T17758-1999, etc., explosion-proof measures: The electrical components, electrical control parts and fan motors in the air conditioner adopt special explosion-proof structure treatment (flameproof type), the solenoid valve, compressor outlet and high and low pressure switch adopt the casting type, the operation panel and pipe temperature, ring temperature sensors, etc., adopt their unique intrinsic safety type, and the explosion-proof points are reliable and prominent. Can be widely used in covering national defense, scientific research, petroleum, chemical, pharmaceutical, processing and manufacturing, biopharmaceutical and other industries, there are ⅡA, ⅡB class, T1 ~ T4 group combustible gas, steam and air mixing form a dangerous place easy to cause explosion! The chiller is a low-temperature resistant motor specially customized by our company (explosion-proof cold storage motor is BT4 explosion-proof motor), which is suitable for low temperature and cold storage.

Third, Leng Di explosion-proof cold storage ExdmbibⅡBT4 design:

Follow the "safe, efficient, energy-saving" principle, from the user's investment positioning, use needs, local climate conditions and other aspects of consideration, to achieve a stable investment cost-effectiveness ratio; The use of "new technology, new equipment, new technology, new materials" to achieve system intelligence, labor lightweight comfort, system high efficiency and energy saving, system risk prevention. Relying on the local environment, the use of natural conditions, design an energy-saving refrigeration system.

Explosion-proof cold storage design specification:

Cold storage Design Code GB50072-2021

Combined Cold Storage JB/T9061-1999

Code for Design of Heating, Ventilation and Air Conditioning for Civil Buildings GB50736-2012

"Ventilation and air conditioning engineering construction quality acceptance Code" GB50243-2013

General Technical Specification for Refrigeration Equipment GBJ237-88

"Refrigeration equipment, air separation equipment installation construction and acceptance code" GB50274-2010

"Field equipment, industrial pipeline welding engineering construction code GB 50236-2011

General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering GB 50231-2009

Code for Construction and Acceptance of Installation Works for hydrochlorofluorocarbon and hydrofluorocarbon refrigeration Systems SBJ 14-2007

Code for Construction and Acceptance of Electrical Installation Engineering GB50254-96

General Atlas of Construction and Installation of Building Equipment 91SB4-1(2005 edition)

Code for Fire Protection in Building Design GB50016-2014

Other applicable national and local norms, regulations and standards.

The bidding documents provided by the owner and the relevant drawings and technical indicators provided by the construction profession.