LNG heavily blocks with firing the pipe connection

The utility model provides a LNG heavily blocks with firing the pipe connection, characteristics are the coupling is constituteed by connecting body, connecting pipe and lock sleeve, connect this internal axially extending bore that is provided with, axially extending bore's right side section is the circular conical surface, the surface middle part of connecting pipe is provided with first step face, is provided with the sphere on the left connecting pipe surface of first step face, the circular conical surface with spherical surface contact, the hole and the axially extending bore intercommunication of connecting pipe. Adopt the utility model discloses an it is sealed effectual to fire the pipe connection, low to the machining precision requirement of part, has reduced the processing cost, simultaneously such line seal structure sealing reliability is high, and long service life has reduced cost of maintenance. 本实用新型提供了种LNG重卡用燃气管接头，特点是所述管接头由接头本体、连接管和锁紧套组成；所述接头本体内设置有轴向通孔，轴向通孔的右段为圆锥面；所述连接管的外表面中部设置有第台阶面，第台阶面左侧