seal head meaning in English
动环
封头
Examples
- Experimental study on stain and stress of big - hole sealing head in fire - tube heating boiler
火筒加热炉大开孔封头应力应变试验研究 - It takes only two to four irradiations to inspect a sealing head weld by using the technology
使用这种方法，一般只需两到四次透照就能完成封头焊缝的探伤。 - Abstract : by a discussion on k value , the radiographic technology for thebutt welds in standard elliptic sealing heads consistent with current standards and regulations is presented
文摘:围绕k值展开讨论，提出一种符合现行标准、规程要求的标准椭圆封头拼接焊缝的射线探伤工艺。 - Present the experimental research carried out on strain and stress by applying the resistance strain surveying technique to the big hole sealed heads in the new fire - tube heating boilers with the laws of strain and stress distribution obtained and allowable working pressure given because there is no applicable standards or specification for calculating the strength of crude oil heating boiler heads perforated by densely distributed big - holes , which , to a certain extent , hampered the further development of crude oil heating boilers in china , and concludes from experimental results that strain and the stress of circumference are fairly large near the edge of big - hole , and the cross ribs enhance strength of sealed head to a certain degree
油田火筒加热炉密集大开孔封头的设计计算，因没有相应的强度计算标准在一定程度上限制了我国油田火筒加热炉技术的发展.采用电阻应变测量技术，对新型火筒加热炉大开孔封头进行了应力应变试验研究，得到了封头的应变和应力分布规律，给出了大开孔封头允许的工作压力.试验结果表明，大孔边缘圆周处应力应变较大，十字筋板对封头有一定加强作用