On July 6, the research project undertaken by China National Offshore Oil Engineering Co., Ltd. (hereinafter referred to as Offshore Oil Engineering) Qingdao Corrosion Control Engineering Technology Center - "Development of Marine Engineering Fireproof Coating Spraying Machine" officially passed the acceptance of experts. This marks that Haiyou Engineering Qingdao Company has broken the long-term monopoly of foreign companies on the spraying technology of two-component fire-retardant coatings in the technology of fire-fighting coating spraying equipment, and developed a fire-proof coating spraying machine with independent intellectual property rights to fill the gap of domestic technology. . According to reports, the equipment uses a number of patented technologies to fundamentally solve and change the various problems currently existing in foreign two-component fire-retardant coating spraying machines, and the spraying efficiency is improved by 108%. Compared with similar foreign equipment, the purchase cost of domestic equipment is reduced by 51.08%, and the purchase cost of consumable parts is also greatly reduced. The equipment purchase period can be shortened by 3 to 4 months. It is reported that the successful development of this equipment not only further lays the leading position of CNOOC in the field of fire-proof paint spraying and spraying, but also is expected to be widely used in domestic shipbuilding and marine engineering. Combined Flow Closed Cooling Tower
Closed Cooling Tower is operated by circulating water or fluid, which is divided into two closed loops.
1. Circulation in the tower: the circulating water or fluid passes through the hot zone environment. After the water temperature rises, it enters the surface cooler in the tower, and the heat is sent to the environment outside the tower through the surface cooler and ventilation fan. The cooled circulating water or fluid is sent to the heat source by the water pump.
2. Circulation outside the tower: the spray water is sent to the spray system by the water tank through the water pipe. After spraying, the spray water first exchanges heat with the filler, so that the spray water can be cooled rapidly. At this time, the water contacts the surface of the surface cooler for heat exchange. Part of the hot steam is discharged through the ventilation fan, and the cooled spray water drops to the water tank for secondary circulation to form an external circulation for cooling.
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