一种带辅助冷却功能的尿素还原剂喷嘴

Carbamide reducing reagent nozzle with auxiliary cooling function

Abstract

本实用新型涉及一种带辅助冷却功能的尿素还原剂喷嘴,其特征在于:在精密雾化喷嘴外部焊装一厚度1.5~2.5mm的不锈钢板隔热保护空腔,保护空腔与精密雾化喷嘴之间的间隙最大2mm,喷嘴离发动机增压器出口最近处;最小0.5mm,喷嘴离发动机增压器出口最远处以及两个侧面;保护空腔中装有冷却介质;保护空腔中的冷却介质可以自来水、车用防冻液或空气。应用于车载SCR后处理装备中的尿素还原剂的雾化和喷射,解决尿素喷射中的结焦堵塞问题,具有极高的可靠性。
The utility model relates to a urea reductant nozzle with an auxiliary cooling function, which is characterized in that a heat insulation protective cavity of a stainless steel plate with thickness of 1.5-2.5mm is welded to the outside of a precise atomizing nozzle, a gap between the protective cavity and the precise atomizing nozzle is 2mm at the most, the nozzle is the nearest to an engine supercharger, the nozzle is 0.5mm at the least away from the farthest position of an outlet and two lateral faces of the engine supercharger, cooling medium installed in the protective cavity can be tap water, vehicle anti-freeze liquid or air. The urea reductant nozzle can be applied to atomization and injection of urea reductant in on-board SCR post-treatment equipment to resolve coking and blocking problems during urea injection, which has sky-high reliability.

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Cited By (3)

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    CN-102628391-AAugust 08, 2012卡特彼勒公司Exhaust system having thermally conductive dosing channel
    CN-102628391-BMarch 02, 2016卡特彼勒公司具有导热性计量通道的排气系统
    CN-102836792-ADecember 26, 2012杭州银轮科技有限公司, 浙江银轮机械股份有限公司一种用于柴油机后处理尿素scr系统的喷嘴