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液压硬管连接的管接头种类及应用

来源:必威官网登陆 时间:2019-03-16 11:38:45 浏览次数: 134

[导读]: 管接头用于管道与管道或管道与液压元件之间的连接,对管接头的主要要求是安装、拆卸方便、抗振动、密封性能好。Pipe joints are used for connecting pipelines or between pipelines and hydraulic components. The main requirements for pipe joints are convenient installation and disassembly, anti-vibration and g

管接头用于管道与管道或管道与液压元件之间的连接,对管接头的主要要求是安装、拆卸方便、抗振动、密封性能好。

Pipe joints are used for connecting pipelines or between pipelines and hydraulic components. The main requirements for pipe joints are convenient installation and disassembly, anti-vibration and good sealing performance.

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目前用于硬管连接的管接头型式主要有焊接式、扩口式、卡套式管接头。

At present, the types of pipe joint used for hard pipe connection mainly include welding type, flaring type and bayonet type.

今天我们来着重聊聊焊接式管接头,焊接式管接头主要由接头体、螺母和接管等组成,接头体的拧入端为细牙管螺纹时,其接合面应加组合密封垫,若拧入端为圆锥螺纹,则不必装组合密封垫。接头体与接管之间用O形密封圈密封,接管被螺母紧压在接头体端面,其外端与钢管焊接相连。

Today we will focus on talking about welding type pipe joint, welding type pipe joint is mainly composed of joint body, nut and pipe, etc., joint body of screw in end for fine tooth pipe thread, its joint surface should add combination gasket, if screw in end for cone thread, then need not install combination gasket. O-ring seal is used to seal the connection between the joint body and the pipe. The pipe is pressed tightly on the end face of the joint body by the nut, and its outer end is welded to the steel pipe.

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焊接式管接头结构简单,制造方便,耐高压(32MPa)、密封性能好。缺点是对钢管与接管的焊接质量要求高。

The welded pipe joint has the advantages of simple structure, convenient manufacture, high pressure resistance (32MPa) and good sealing performance. The disadvantage is that the quality of steel pipe and pipe welding requirements.

焊接式管接头的接头体和螺母的材料一般为35或45号钢,焊管为15或20号钢。为保证焊接质量,与其连接的钢管应选用普通级精度的15或20号冷拨(冷轧)无缝钢管。若工作介质为腐蚀性介质,材料应选用不锈钢。为满足液压系统管道连接的不同要求,焊接式管接头又分为端直通管接头、直通管接头、三通管接头、四通管接头、隔壁直通管接头和分管管接头等多种型式,选用时可参考有关标准(JB966 -1002-77)或产品样本。

The material of joint body and nut of welded pipe joint is generally 35 or 45 steel, and welded pipe is 15 or 20 steel. In order to ensure the quality of welding, the steel tube connected with it should be 15 or 20 cold drawn (cold rolled) seamless steel tube of common grade accuracy. If the working medium is corrosive medium, the material should be stainless steel. In order to meet the different requirements of the hydraulic system pipe connection, the welded pipe joint can be divided into the end straight pipe joint, straight pipe joint, three-way pipe joint, four-way pipe joint, next-door straight pipe joint and sub-pipe pipe joint and other types, the selection can refer to the relevant standards (jb966-1002-77) or product samples.


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