从化学计量向贫燃料状态靠近时,预混火焰强度减弱,火焰传播速度减小,锥形火焰面逐渐增高,退到流速较低的下游区域;
When the CH4-air mixture approaches the lean fuel state, the flame speed accordingly decreases, the flame cone rising and retreating downstream to the area with lower flow speed.
设计时必须认识到当压力增加时火焰的长度缩短而辐射强度增加。
Design should recognize that burner flame length shortens and intensity of radiation increases as pressure increases.
试验显示,硅烷燃烧的火焰或者不能点燃纸张,或者其强度可以熔化象黄铜和铝一样的金属。
Testing has shown silane can burn with a flame that cannot ignite paper or with an intensity that will melt metals like brass and aluminum.
结果表明:采用旋转气流及用改变旋流强度的方法来调节低压油烧嘴的火焰长度是切实可行的。
It has shown that adopting revolving air flow and adjusting the flame length by changing the strength of revolving for low pressure oil burners is feasible.
这套模具在测量火焰喷涂聚合物涂层自拉伸强度方面实用、快速、简单。
The mould is useful, rapid and simple in measuring the self tensile strength of flame spraying polymer coatings.
数额强调,目前将取决于多项因素,包括强度和规模的火炬火焰,玻璃墙厚度和复杂性密封本身。
The amount of stress present will be determined by a number of factors including the intensity and size of the torch flame, glass wall thickness and the complexity of the seal itself.
火焰喷涂具有设备简单、使用方便、操作成本低的特点,但它的涂层结合强度低,气孔率及氧化物含量高。
Flame spray possesses the characteristics of simple equipment, easy of use and low operating cost, but the coating adhesive strength is low, and porosity and oxidation is high.
结果表明,相对强度法能准确地测出单元推进剂HNIW在整个燃烧过程的温度分布曲线,测得的最高燃烧火焰温度低于相应压力下的理论计算温度;
The (investigation) results show that the curves of combustion flame temperature distribution in all combustion course are accurately measured by relative intensity method for monopropellant HNIW.
计算出的分形维数是衡量湍流火焰传播速度以及爆炸强度的有效参数。
It can reflect the flame propagation speed and evaluate the explosion intension.
得出了火焰面位置及燃烧温度随当量比和燃烧强度的变化而在多孔介质中移动的规律;
The laws of the flame position and the temperature in the HPM changing with the equivalence ratio or the firing rate have been gained.
它结合了火焰高强度优良的平衡,刚度和热变形温度阻燃能力。
It combines flame retardant ability with an excellent balance of high strength, stiffness and heat distortion temperature.
使用温度高,强度高,烧后线变化小,导热率低,可直接接触高温火焰。
High service temperature and high strength good volume stability low THML. Cond. And can contact flame directly.
介绍了一种关于碳氢燃料泄漏火灾火焰热辐射强度的估算方法,并运用具体实例进行了验证。
The method used to estimate the intensity of thermal radiation from the fire of hydrocarbons leakage to the ambient air is introduced, and is verified by an example.
介绍了火焰切割对低合金高强度钢在残余应力、淬硬、渗碳等方面的影响。
This article introduces the impact of flame-cutting on high strength lower alloy structural steels from curious aspects Such as remnant stress, quench rigidity, cementite and so on.
在预测火焰的热辐射时,将火焰中心模拟成一个点源,提出了热辐射强度的简便计算方法。
When predicting the thermal radiation of flame, the flame core is simulated as a point source, and the simple calculating method is developed for the strength of the thermal radiation.
二次风旋流强度的变化对炉内燃烧影响较大,旋流数过小时(S<0.8),火焰将冲刷后墙;
The swirl number of secondary air has a great influence on the combustion. When swirl number is small(S<0.8), the fire is long, and may rush the back wall.
目前国内外电厂使用的多为光电式火焰检测器,其原理是分析火焰燃烧时辐射光的强度或闪烁频率。
Nowadays, the photoelectric flame detector is widely used in the power plants. The principle is to analyze the intensity or flicker frequency of radiation.
柔和燃烧的火焰面分散,燃烧反应在空间较大范围内发生,火焰亮度低,OH信号强度和脉动都非常弱。
The flame of mild combustion is distributed in a large space, flame luminosity as well as OH intensity is very low.
适当增大挤气面积,可增大逆挤流强度,提高缸内湍流动能,促进火焰传播。
The turbulence kinetic energy and crushing strength is increased with the increasing of squish area.
采用亚音速氧乙炔火焰喷涂技术,喷涂一次性自粘结粉末,经测定涂层的结合强度可达到打底层的界面结合强度。
The strength of coating layer obtained by one-shot self-felt powder with subsonic oxygen-acetylene spraying technique was discussed.
改装后的燃烧器具有燃烧强度大、火焰燃烧稳定等优点。
After reformatting the former burner, it possesses many good characteristics, such as the enhancement of combustion efficiency, flame stability, etc.
八类林型的火线强度、火焰长度均随着火焰平均风速增加而增大。
The flame length and fire intensity of 8 forest types were also increased with the acceleration of the average flame speed.
本文用双通道热线风速仪对低压下V形火焰稳定器后回流区流动特性进行了实验研究,获得了局部平均速度、素流强度、雷诺应力等参数的分布情况。
By using a constant-temperature-type hot-wire anemometer, the flow characteristics of the recirculating region behind the Vee-gutter flame-holder were investigated experimentally at sub-atmosphere.
本文用双通道热线风速仪对低压下V形火焰稳定器后回流区流动特性进行了实验研究,获得了局部平均速度、素流强度、雷诺应力等参数的分布情况。
By using a constant-temperature-type hot-wire anemometer, the flow characteristics of the recirculating region behind the Vee-gutter flame-holder were investigated experimentally at sub-atmosphere.
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