The utility model relates to an equipment pressure test connecting pipe and a pressure test method, belonging to the field of pressure test for manufacturing large-scale pressure vessels and heat exchanger equipment, which overcomes the defects of the prior art that the pressure test allowance needs to be considered for the ordering of pressure test connecting pipe, the thick material used for pressure test of head, the large waste and the large welding workload. The pressure test connecting pipe of the invention is provided with a pressure test head connecting port (2) whose outer diameter and thickness are less than the pressure test connecting pipe body (1) in the forming process, forming once. Pressure test method of pressure test connecting pipe of the equipment: select or make pressure test head (3) whose outer diameter and thickness are suitable for the connection port (2) of pressure test head; weld the connecting pipe body (1) with the equipment shell and conduct heat treatment after passing the flaw detection; weld the connection port (2) of pressure test head and pressure test head (3); cut the pressure test head after passing the water pressure test; remove the connection end of pressure test head by boring machine (2) make it conform to the design size. The invention is suitable for pressure test of large-scale pressure vessel, saves material cost and welding cost of connecting pipe and head, ensures quality, simple operation, safety and reliability.
【技术实现步骤摘要】
一种设备试压接管与试压方法
本专利技术属于大型压力容器、换热器设备制造领域,涉及设备试压。
技术介绍
换热器是炼油、化工及新能源装置中除反应器外的核心设备之一。近年来我国在大型炼油、大型煤化工、大乙烯等项目的建设中投资力度加大,规模也越来越大。在其制造过程中进行压力试验是一个不可或缺的重要工序。在试压中,现有技术操作一般都是在试压接管长度方向留有10~20mm试压余量,在设备试压时,根据接管与外部管线连接端口厚度选择相同直径及厚度的试压封头。这样,配置的试压封头都比较厚,工艺用料的成本相对增加;导致焊接工作量大,焊材耗费大;因此势必增加工作量,人力成本也相应增加;很不经济。
技术实现思路
专利技术目的:克服现有技术试压接管订料需考虑试压余量,封头试压用料较厚,浪费大,焊接工作量较大的缺陷。本专利技术提供一种设备试压接管,在试压接管成型加工中设置试压封头连接端口2,无论是锻压还是车加工,其接管本体1及其外管线连接坡口和试压封头连接端口2一次成型,二者为一个整体;所述的试压封头连接端口2的外径及厚度小于试压接管本体1,在满足试压压力要求前提下,越小越好。使用本设备试压接管的试压方法:选择或者制作试压封头3,根据设备接管所定坯料、试压封头连接端口2实际尺寸、设备水压试验压力三个方面综合考虑确定试压封头大小、端口跨度及厚度,其外径及厚度与试压封头连接端口2相适应;将接管本体1与设备壳体相连焊接并探伤合格,设备整体进行热处理;试压封头连接端口2与试压封头3焊接连接;< ...
【技术保护点】
1.一种设备试压接管,其特征是:在试压接管成型加工中设置试压封头连接端口⑵,无论是锻压还是车加工,其接管本体⑴及其外管线连接坡口和试压封头连接端口⑵一次成型,二者为一个整体;所述的试压封头连接端口⑵的外径及厚度小于试压接管本体⑴,在满足试压压力要求前提下,越小越好。/n
【技术特征摘要】
1.一种设备试压接管,其特征是:在试压接管成型加工中设置试压封头连接端口⑵,无论是锻压还是车加工,其接管本体⑴及其外管线连接坡口和试压封头连接端口⑵一次成型,二者为一个整体;所述的试压封头连接端口⑵的外径及厚度小于试压接管本体⑴,在满足试压压力要求前提下,越小越好。
2.使用权利要求1所述的一种设备试压接管的试压方法,其特征是:
①选择或者制作试压封头⑶,根据设备接管所定坯料、试压封头连接端口⑵实际尺寸、设备水压试验压力三方面综合考虑...
【专利技术属性】
技术研发人员:石慧君,张文龙,李亚亚,刘仙君,柴宗刚,王有银,王振坤,尹亚斌,戴鹏礼,
申请(专利权)人:兰州兰石重型装备股份有限公司,
类型:发明
国别省市:甘肃;62
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。