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辽阳石油化学纤维工业总公司在1979年建成了一座一万立方米浮顶汽油储罐,所采用的弹性密封装置如图1所示。弹性密封装置的橡胶袋由桂林橡胶制品厂生产,展开宽度为1400毫米,是用宽度为800和700毫米的两条橡胶带相互粘合搭接而成,搭接宽度为50毫米。这条橡胶袋经上下移动五次后搭接缝就发生脱开现象,弹性元件(聚氨酯软泡沫塑料块)从橡胶袋内蹦出,密封装置失效,至使这台浮顶油罐停运了儿个月。其主要原因是橡胶袋搭接缝的结合力差,不能满足要求,因此在使用过程中被拉开。为了解决这个问题,1980年10月采取了如图2所示的补
Liaoyang Petrochemical Fiber Industry Corporation in 1979 built a 10,000 cubic meters of floating roof petrol storage tank, the use of flexible sealing device shown in Figure 1. Elastic sealing device of the rubber bag from Guilin Rubber Products Factory to expand the width of 1400 mm, is the width of 800 and 700 mm two rubber tape bonded to each other lap, lap width of 50 mm. After the rubber bag was moved up and down five times, the seams broke off. The elastic element (polyurethane foam block) popped out of the rubber bag and the sealing device failed to stop the floating oil tank A few months. The main reason is the poor adhesion of lap joints, can not meet the requirements, so in the course of being opened. In order to solve this problem, in October 1980 taken as shown in Figure 2 to make up