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随着石油化学工业的飞速发展,球形容器的使用也越来越多,为使日益增多的球形容器能够安全生产,避免球罐恶性事故发生,有关部门规定,对在用球罐要定期进行开罐检查,以便及时发现那些由于应力而产生的延迟裂纹;由于操作而产生的疲劳裂纹;介质的蚀腐(应力腐蚀及化学腐蚀)情况以及其它危害性缺陷。到目前为止,国内球罐的开罐检查,大多数还是采用在球罐内搭脚手架,因此,耗费大量的人工及材料,花费较大,也很不方便。
With the rapid development of the petrochemical industry, the use of spherical containers is also increasing. In order to make the production of more spherical containers safe and avoid the occurrence of the malignancy of the spherical tank, relevant departments stipulate that the use of spherical containers should be carried out on a regular basis Inspection of tanks to promptly detect delayed cracks due to stress; Fatigue cracks due to handling; Corrosion of media (stress corrosion and chemical corrosion) and other hazardous defects. So far, the inspection of the open domes of domestic spherical cans has mostly taken the scaffolding inside the spherical cans. Therefore, it takes a lot of manpower and material, which is expensive and inconvenient.