论文部分内容阅读
一、防爆的必要性在管内壁高压静电喷涂中,有时静电火花会引起粉末爆炸,造成设备损坏、人身伤亡等事故。粉末爆炸是有条件的:一是粉末与空气的混合浓度要在一定范围内才能发生爆炸,高于或低于这个浓度范围都不会爆炸。二是要有足够的引燃(爆)能量。在管子内部采用高压静电喷涂方法,喷涂环氧树脂粉末的浓度一般处在爆炸浓度(25～63克/米~3)范围内。所以,在管内进行正常静
First, the need for explosion-proof In the high-pressure electrostatic spraying tube wall, and sometimes sparks will cause electrostatic spark explosion, causing equipment damage, personal injury and other accidents. Powder explosion is conditional: First, the concentration of powder and air mixture to a certain extent within the explosion, above or below this concentration range will not explode. The second is to have enough ignition (burst) energy. In the pipe using high-pressure electrostatic spraying method, spray epoxy resin powder concentration is generally in the explosive concentration (25 ~ 63 g / m ~ 3) within the range. So, in the tube for normal quiet