CN112844885A - 一种可喷射氨气的喷嘴 - Google Patents

一种可喷射氨气的喷嘴 Download PDF

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CN112844885A
CN112844885A CN202110269489.2A CN202110269489A CN112844885A CN 112844885 A CN112844885 A CN 112844885A CN 202110269489 A CN202110269489 A CN 202110269489A CN 112844885 A CN112844885 A CN 112844885A
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iron core
movable iron
nozzle
ammonia gas
ammonia
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王晓玫
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

一种可喷射氨气的喷嘴，包括有开关装置和阀口座；开关装置是由本体、电磁线圈、定铁心、回位弹簧和动铁心构成，本体的底部通过连接架与阀口座连接，动铁心作为活塞使用，电磁线圈设置在本体中，动铁心位于电磁线圈中间的内筒中，动铁心与内筒的内壁之间为紧密接触，防止氨气泄露；定铁心位于动铁心的顶部，定铁心与动铁心之间连接回位弹簧，动铁心的下端面与阀口座端面紧密接触；定铁心和动铁心均开设有通气孔，本体的顶部开设有螺孔，螺孔与氨气管连接，氨气能通过通气孔喷出。本发明氨气喷嘴结合氨气发生系统，可直接喷射氨气，不受温度影响，没有结晶,提高了NOx转化效率。

Description

一种可喷射氨气的喷嘴
技术领域
本发明涉及一种喷嘴，特别涉及一种可喷射氨气的喷嘴，属于汽车零部件领域。
背景技术
目前汽车尾气SCR后处理器系统采用尿素做为还原剂,转化尾气中的NOx，即将尿素溶液喷入后处理器中，在一定的温度下水解成氨气和水，氨气与尾气中的氮氧化物NOx,发生还原反应,生成氮气和水。由于尿素溶液在低温下，不能完全水解成氨气和水，一部分沉积并产生结晶，在后处理器载体上造成堵塞，结晶逐渐积累完全堵塞后，处理器就会失效。
发明内容
本发明的目的是为了解决背景技术中存在的问题，而提供一种可喷射氨气的喷嘴。本发明氨气喷嘴结合氨气发生系统，可直接喷射氨气，不受温度影响，没有结晶,提高了NOx转化效率,是国土排放法规必选技术方案。
一种可喷射氨气的喷嘴，包括有开关装置和阀口座；
所述的开关装置是由本体、电磁线圈、定铁心、回位弹簧和动铁心构成，本体的底部通过连接架与阀口座连接，动铁心作为活塞使用，电磁线圈设置在本体中，动铁心位于电磁线圈中间的内筒中，动铁心与内筒的内壁之间为紧密接触，防止氨气泄露；定铁心位于动铁心的顶部，定铁心与动铁心之间连接回位弹簧，动铁心的下端面与阀口座端面紧密接触；定铁心和动铁心均开设有通气孔，本体的顶部开设有螺孔，螺孔与氨气管连接，氨气能通过通气孔喷出。
所述的动铁心的下端面与阀口座端面为平面接触密封。
所述的动铁心表面涂覆有减磨涂层，防止干摩擦。
所述的阀口座材质为非金属材料，封闭性好。
所述的动铁心为圆柱形。
所述的回位弹簧材质为不锈钢。
本发明的工作过程：
在电磁线圈不通电的状态下，动铁心在回位弹簧的抵顶下，动铁心的下端面与阀口座端面紧密接触，封闭动铁心的通气孔；当向电磁线圈通直流电，电磁线圈产生电磁力，作为活塞使用的动铁心向上移动，阀口座脱离对动铁心的通气孔的封闭，氨气从通气孔喷出；当断电后，动铁心在回位弹簧的抵顶下，动铁心的下端面与阀口座端面紧密接触，封闭通气孔。
本发明通过PWM脉宽调制，来控制电磁线圈，通过脉宽的长段来控制动铁心与阀口座之间的接触时长，进而控制氨气喷射量的大小。
本发明的有益效果：
本发明氨气喷嘴结合氨气发生系统，可直接喷射氨气，不受温度影响，没有结晶,提高了NOx转化效率。
附图说明
图1为本发明的结构示意图。
图2为本发明的动铁心剖视图。
具体实施方式
如图1所示，一种可喷射氨气的喷嘴，包括有开关装置1和阀口座2，
所述的开关装置1是由本体11、电磁线圈12、定铁心13、回位弹簧14和动铁心15构成，本体11的底部通过连接架16与阀口座2连接，动铁心15作为活塞使用，电磁线圈12设置在本体11中，动铁心15位于电磁线圈12中间的内筒20中，动铁心15与内筒20的内壁之间为紧密接触，防止氨气泄露；定铁心13位于动铁心15的顶部，定铁心13与动铁心15之间连接回位弹簧14，动铁心15的下端面与阀口座2端面紧密接触；定铁心13和动铁心15均开设有通气孔17，本体11的顶部开设有螺孔18，螺孔18与氨气管连接，氨气能通过通气孔17喷出。
所述的动铁心15的下端面与阀口座2端面为平面接触密封。
如图2所示，所述的动铁心15表面涂覆有减磨涂层19，防止干摩擦。
所述的阀口座2材质为非金属材料，封闭性好。
所述的动铁心15为圆柱形。
所述的回位弹簧14材质为不锈钢。
本发明的工作过程：
在电磁线圈12不通电的状态下，动铁心15在回位弹簧14的抵顶下，动铁心15的下端面与阀口座2端面紧密接触，封闭动铁心15的通气孔17；当向电磁线圈12通直流电，电磁线圈12产生电磁力，作为活塞使用的动铁心15向上移动，阀口座2脱离对动铁心15的通气孔17的封闭，氨气从通气孔17喷出；当断电后，动铁心15在回位弹簧14的抵顶下，动铁心15的下端面与阀口座2端面紧密接触，封闭通气孔17。
本发明通过PWM脉宽调制，来控制电磁线圈12，通过脉宽的长段来控制动铁心15与阀口座2之间的接触时长，进而控制氨气喷射量的大小。

Claims (6)

1.一种可喷射氨气的喷嘴，其特征在于：包括有开关装置(1)和阀口座(2)；所述的开关装置(1)是由本体(11)、电磁线圈(12)、定铁心(13)、回位弹簧(14)和动铁心(15)构成，本体(11)的底部通过连接架(16)与阀口座(2)连接，动铁心(15)作为活塞使用，电磁线圈(12)设置在本体(11)中，动铁心(15)位于电磁线圈(12)中间的内筒(20)中，动铁心(15)与内筒(20)的内壁之间为紧密接触；定铁心(13)位于动铁心(15)的顶部，定铁心(13)与动铁心(15)之间连接回位弹簧(14)，动铁心(15)的下端面与阀口座(2)端面紧密接触；定铁心(13)和动铁心(15)均开设有通气孔(17)，本体(11)的顶部开设有螺孔(18)，螺孔(18)与氨气管连接，氨气能通过通气孔(17)喷出。
2.根据权利要求1所述的一种可喷射氨气的喷嘴，其特征在于：所述的动铁心(15)的下端面与阀口座(2)端面为平面接触密封。
3.根据权利要求1所述的一种可喷射氨气的喷嘴，其特征在于：所述的动铁心(15)表面涂覆有减磨涂层(19)。
4.根据权利要求1所述的一种可喷射氨气的喷嘴，其特征在于：所述的阀口座(2)材质为非金属材料。
5.根据权利要求1所述的一种可喷射氨气的喷嘴，其特征在于：所述的动铁心(15)为圆柱形。
6.根据权利要求1所述的一种可喷射氨气的喷嘴，其特征在于：所述的回位弹簧(14)材质为不锈钢。
CN202110269489.2A 2021-03-12 2021-03-12 一种可喷射氨气的喷嘴 Pending CN112844885A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113426599A (zh) * 2021-08-26 2021-09-24 江苏乐驾胜飞新能源科技有限公司 一种脉冲式高流量喷射装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113426599A (zh) * 2021-08-26 2021-09-24 江苏乐驾胜飞新能源科技有限公司 一种脉冲式高流量喷射装置
CN113426599B (zh) * 2021-08-26 2021-11-05 江苏乐驾胜飞新能源科技有限公司 一种脉冲式高流量喷射装置

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