Pipeline for delivering engine waste gas post-processing medium

• Main Authors: TU PINGHUA, WU LONG, LIU JUNSHENG
• Format: Patent
• Language: Chinese; English
• Published: 20.06.2012
• Subjects: BLASTING; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PIPES; SEPARATION; STEAM ENGINES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

The invention relates to a conveying tube for conveying an exhaust post-treatment medium of an engine. The conveying tube comprises a conveying tube (1), joints (3), a heater strip (5), a lead wire (6), a wire connecting terminal (9) and an insulating layer (10), wherein a groove (2) used for assembling the heater strip (5) is arranged on the surface of the conveying tube (1); two joints (3) are connected with two ends of the conveying tube in an interference fit mode respectively; and the heater strip (5) is connected with the wire connecting terminal (9) through the lead wire (6). The conveying tube has the advantages of simple structural manufacture, long service life, accurate performance and high reliability, is particularly applicable to an exhaust post-treatment device of a diesel motor, not only has the function of conveying a urea solution, but also has the function of heating and melting the urea solution under the condition that the urea solution is refrigerated and iced, and can strictly control h