Analysis of the purchase points of the laboratory explosion-proof refrigerator
With China's more stringent standards for the storage of risk products, the use of each risk product unit self-security awareness, more and more customers choose to use the laboratory explosion-proof refrigerator to store all kinds of low-temperature requirements of risk products. However, the current domestic laboratory explosion-proof refrigerator manufacturers and distributors most do not understandLaboratory explosion-proof refrigeratorThe characteristics, so that the market appeared a variety of laboratory explosion-proof refrigerator but did not reach the real explosion-proof products appear. In order to user shopping convenience, this introduction of the laboratory explosion-proof refrigerator to buy the main.
First, it is necessary to have the laboratory explosion-proof refrigerator explosion-proof certificate
At present, domestic and imported laboratory explosion-proof refrigerator is now widely used in the market, but users must be suppliers to supply China's explosion-proof safety supervision and inspection station issued by the laboratory explosion-proof refrigerator explosion-proof certificate.
Second, the purchase of laboratory explosion-proof refrigerator is necessary to use environmentally friendly and safe refrigerant, but even the refrigerant leakage will not cause blasting.
At present, because of China began to implement environmentally friendly refrigerants, Freon's corrosive effect on the Earth's ozone layer for the Scientific Research Institute to prove that the original Freon has been continuously discontinued, is now using is basically R600a or R134a, will not damage the environment, non-fluorine environmental refrigerant. R600a is isobutane, it is slightly soluble in water, with stainless steel, copper aluminum and carbon steel and other metals compatibility is good, but flammable and explosive, R134a this refrigerant is relatively high water-soluble, so the refrigeration system is not very good, and this refrigerant in the lubricant effect, acid, carbon dioxide or carbon monoxide, will be corrosion effect on the metal. Therefore, R134a on the system of boring and clean requirements are relatively high, each has advantages and disadvantages. Some worry that refrigerant leakage will cause blasting, the laboratory explosion-proof refrigerator is to do even if the refrigerant leakage (R600a) leakage will not be caused by the laboratory explosion-proof refrigerator itself factors caused by the blasting, I plant the laboratory explosion-proof refrigerator has now been able to trigger the explosion elements to complete the exclusion, unless it is artificial external elements, such as gas welding cutting repair.
Third, the purchase of laboratory explosion-proof refrigerator is necessary to be a real IIC-class two-story laboratory explosion-proof refrigerator.
Explosion-proof electrical equipment is divided into two categories: Category I for underground electrical equipment for coal mines, II for the use of electrical equipment in the field other than the mine, and class II electrical equipment divided into: IIA, IIB, IIC three categories. Laboratory explosion-proof refrigerator to Class II explosion-proof electrical equipment. At the same time, the IIC level is class II equipment in the grade zui high, there is hydrogen, acetylene environment is necessary to IIC-class explosion-proof electrical equipment, IIB class is not up to standard.
Four, the laboratory explosion-proof refrigerator box is 0 area design and production, fire-free inner bile explosion-proof technology, but the structure type is now more than ia explosion-proof type.
According to the bump of the degree of blasting risk, the gas/vapor risk site is divided into: zone 0, 1 and 2 area, their division depends first on the degree of acquittal source (blasting risk source), of course, the structure of the building in the site, the ability of ventilation equipment and the natural elements of the site will have an impact on its division, or even have a great impact.
