喷出器

Based on the analysis of the forces exerted on particles in air flow, the track equation which describe particles jetted from nozzle in air sampler and formula between the track and design parameters of impactor are obtained.

本文从颗粒在气流中的受力情况分析入手，得到冲击采样器中喷嘴喷出后颗粒的运动轨迹方程以及运动轨迹与采样器切割头设计参数的关系式。

An aerosol spray device which is capable of imparting a unipolar charge by double layer charging and charge separation to liquid droplets of a composition sprayed therefrom has a spraying head in the form of an insert in an actuator, the spraying head having a bore through which liquid is expelled having an outlet, preferably with a tortuous periphery, having an L/a ratio of at least 8 (preferably at least 10) where L is the length of the periphery defining the bore outlet in mm and a is the cross-sectional area of the bore outlet in mm2 and the apparatus being constructed such that the droplets are expelled from the spraying head at a flow ratio of at least 0.4 (preferably at least 0.5) grams per second and have a charge to mass ratio of at least +/-1x10-4 C/kg.

本发明还提供了一种喷射装置，它能够通过双层充电和电荷分离而向要喷出的组合物液滴施加单一极性的电荷，该喷射装置具有一个喷头，该喷头制成为致动器中的插入件的形式，喷头具有一个孔腔，液体能够通过该孔腔从装置中排出，该孔腔具有一出口，该出口最好具有曲线周边，并且L/a比率至少为8，其中L是以mm为单位的确定孔腔出口的周长，a是以mm2为单位的孔腔出口的横截面积，该装置构造成使得液滴在至少每秒0.5克的流动速率以及具有至少＋／－1×100C/kg的电荷／质量比的状态下从喷头排出。

The alarm valve should be installed vertically. When there is a fire in the protected area, temperature rises up, pressed water jet from sprayer, and the alarm valve is initiated to jet water onto fire. After 5-20 seconds, the delayer will sent out alarming signal to ring the bell for fire extinguishing.

当保护区某处发生火灾时，环境温度升高，闭式喷头的维护敏感元件破裂，压力水从喷孔口喷出并自动启动报警阀将水直接喷向火灾发生区域，延迟器延时5-20秒后发出报警信号，带动警铃以达到报警、灭火的目的。

Based on the theory of large eddy simulation and the method of VOF , the initial breakup process of fuel liquid jet, which eject from the nozzle exit at the time scale of micro-second level, is investigated. The mechanism of primary atomization is analyzed, and the initial breakup model of liquid jet is presented. By modeling and numerical simulation of atomization for a diesel nozzle under the given conditions, the initial umbrella-like spray shapes are obtained, which fits better with the experimental results. Meanwhile, the droplets secondary breakup process, such as leeward RT breakup, dumbbell-like breakup and droplets coalescence, etc. are exhibited visually.

基于大涡模拟LES理论和VOF方法，考察了燃油喷雾初始时刻即时间尺度为微秒级的液柱破碎过程，分析了初始破碎的机理，给出了该时间尺度下液柱初始破碎过程的模型；通过对一特定条件下的柴油机喷油器的建模和喷雾过程的大涡数值模拟，获得了液柱初始时刻"伞状头部"的喷雾形态，所得计算结果与相应的试验数据符合较好；数值模拟还直观地展现了液滴背风RT破碎、哑铃型破碎以及液滴的聚集融合等液滴的二次雾化过程。

It also gets some modificatory curves. During test, the atomization characteristics is also tested and analyzed. The spray angle and distribution have been analyzed and obtained by experimentation in this system. The spray angle is figured out through the design principle.

通过试验也对喷油器的喷雾特性进行了测试和分析，本系统通过空心锥角喷雾测试方法计算出电控喷油器的雾化角，同时对于喷雾的均匀性分布进行了相应的测量。

The working process of set is as follows; the liquid of raw material is pumped in through diaphragm pump. The liquid of raw material atomizes into tiny droplets. Then it gathers with hot air and fall off. Most parts of powder material will be collected through the outlet of discharge at the bottom. The wasted air and fine power will be separated through cyclone.

本机组工作过程为料液通过隔膜高压输入，喷出雾状液滴，然后同热空气并流下降，大部分粉粒由塔底排料口收集，废气及其微小粉末经旋风分离器分离，废气由抽风机排出，粉末由设在旋风分离器下端的收粉筒收集，风机出口处还可以装备二级除尘装置，回收率在96-98%以上。

Sixth, followed by release of the cylinder high-pressure injector tubing connector on the nut, the governor of diesel engine running under the handle position, rotation of diesel engine, the high-pressure pipeline from the air (this step can be ignored under normal circumstances, when the start failure should not be ignored).

第六，依次松开各缸喷油器上的高压油管接头螺母，将调速器手柄置于柴油机运行位置，转动柴油机，排出各高压油管内的空气（此步骤一般情况下可以忽略，当启动失败时不应忽略）。

To burning the heavy oil in diesel locomotive, the injection unit must be adjusted, such as the clearance of piston, the spring character of unilateralism valve, the needle valve lift of injector and so on. At the same time, the parameter of injection, such as the injection advace angle, the injection time, should be adjusted according to the actual instance.

针对燃用重柴油的实际，需对柴油机喷射元件，如：喷油泵柱塞偶件间隙、出油阀弹簧刚度、喷油器针阀升程、及喷射参数，如：喷油提前角、喷油定时等均需作出调整，本文论述了具体的调整方法和依据。

By using EFS injection test bench,this paper studied the different performance of electronic injector with different type of orifices.

使用EFS喷射试验台，测量电控喷油器在匹配不同参数的节流孔板后所表现出的喷油特性，并加以分析。

Injector fuel supply or pressure is not enough, atomization bad, drip, etc.; plunger rod adjustable arm or teeth protruding ears from the governor lever fork slot prolapse in non-oil position; fuel pump plunger and barrel assembly seriously wear and tear, oil pressure is too low, the oil valve wear serious Mifengbuyan; washer crack and deformation, a broken valve spring, injector wear and tear stuck in the closed position.

喷油器不供油或压力不足、雾化不良、滴油等；柱塞调节臂或齿杆凸耳从调速杠杆叉槽中脱出处于不供油位置；喷油泵柱塞偶件严重磨损，供油压力太低，出油阀磨损严重，密封不严；垫圈开裂变形，出油阀弹簧折断，喷油器磨损卡死在关闭位置。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。