燃烧器

The invention concerns a burner comprising a premix designed to produce a flammable air-fuel mixture, said burner including a vortex generator, wherein are provided two complementary burner shells forming a passage body, having each a first half-cone burner shell section (1) and delimiting together a turbulence chamber, widening in the axis in the form of a cone, as well as tangential air intake slots in the axial longitudinal direction of the cone.

描述了一种用于产生可点燃的燃料-空气混合物的预混燃烧器，该预混燃烧器具有涡流发生器，该涡流发生器设置了至少两个对穿流本体进行补充的燃烧器壳，所述燃烧器壳分别具有构造为分锥形状的第一燃烧器壳区段(1)并且共同限定着在轴向上按锥形方式扩展的涡流室并且限制着所述沿轴向的锥体纵向伸展方向相互相切的进气缝隙。

Backset current area, the important factor of burner performance was discussed on the basis of carrying on numerical simulation to the cement kiln with three-channel burner by the model of. RNG k-ε. The model that backset current area was divided into center backset current area, interior backset current area, and other backset current area was compared in three-dimensional condition.

在采用重整化群κ-ε模型对水泥窑用多通道燃烧器进行数值模拟的基础上，针对影响燃烧器性能的重要指标－回流区进行讨论，将三维条件下燃烧器的流场分布与传统燃烧器流场进行劝比，提出了三维条件下燃烧器回流区分为中心回流区、内回流区、外回流区3个回流区的分布模型，并分析了影响回流区的直流风和旋流风2个重要因素。

An analytical model was built up on the jet deflection in the crossflow by applying the theorem of momentum, which takes full account of mixing between the upstream fluid and burner jet, and of the total pressure difference between the two sides of the jets. Through analysis of this model, experimental study and numerical simulation, effects of the nozzle spacing ratio, width of the furnace corner, width of the nozzle and imaginary circle diameter on the aerodynamic field in the furnace were obtained.

本文综合考虑了炉内旋转气流与燃烧器射流的混合和燃烧器射流向火侧与背火侧的全压差等因素，应用动量定理建立了横向气流中射流偏转的分析模型，并结合冷态模化试验和数值模拟计算，得到了燃烧器间隙率、炉膛切角、喷口宽度和假想切圆直径等因素对炉内空气动力场影响的规律。

This liquid propane gas grill also has a 12,000 BTU-per-hour input flush-mounted side burner, 8,000 BTU-per-hour smoker burner, and 10,600 BTU per-hour infrared rotisserie burner.

这个液体丙烷气体格栅也有一台12，000个BTU每小时输入的flush-mounted旁边燃烧器、8，000个BTU每小时吸烟者燃烧器和10，600 BTU每小时红外烤肉店燃烧器。

The invention is characterised in that the gaseous fuel containing hydrogen or consisting of hydrogen is fed into the swirl generator (1) largely axially and/or coaxially to the burner axis, forming a fuel flow, with a largely spatially defined flow form (9) which is maintained inside the burner and opens up in the region of the burner outlet.

本发明的特征在于，所述含有氢气或者由氢气所组成的气态燃料在涡流发生器(1)内相对于燃烧器轴线尽可能轴向地和/或同轴地、在形成燃料流的情况下以尽可能空间受限制的流动形状(9)被输入，该流动形状(9)在燃烧器内得以保持，并且在燃烧器出口的范围内绽开。

Result shows that the baffle of burner has very little influence on the total resistance characteristic; both the speed of rich side and lean side are affected by the angle of burner as a whole, furthermore, the lean side is influenced more greatly; the separation performance could be enhanced with the increase of burner's angle and the best separation effect could be acquired when the three baffles are dissymmetrically arranged.

结果表明，燃烧器挡板角度的调整对燃烧器的总体阻力特性影响很小；燃烧器挡板偏转对于燃烧器整体以及浓淡两侧的气流速度都有一定的影响，且对淡侧影响较大；燃烧器的浓淡分离效果随挡板偏角的增加而显著增加，且三挡板非对称布置的浓淡分离效果最好。

By adjusting the angle of the primary air baffle under the mode of one baffle symmetrically arranged, one baffle dissymmetrically arranged and three baffles dissymmetrically arranged, the resistance characteristic, bias air ratio and the concentrated ratio are studied to confirm the influence of primary air baffle and separation baffles on the separation process,which is of great significance to enhance the performance of horizontal bias burner.

该文在一挡板对称布置、一挡板不对称布置、三挡板不对称布置3种不同的方式下，通过调整燃烧器一次风挡板角度，对3种布置方式下燃烧器的阻力特性、浓淡风比及浓缩比进行了研究，旨在确定一次风挡板角度与分离挡板对燃烧器浓淡分离的影响，以便提高水平浓淡燃烧器的性能。

By adjusting the angle of the primary air baffle under the mode of one baffle symmetrically arranged, one baffle dissymmetrically arranged and three baffles dissymmetrically arranged, the resistance characteristic, bias air ratio and the concentrated ratio are studied to confirm the influence of primary air baffle and separation baffles on the s.

该文在一挡板对称布置、一挡板不对称布置、三挡板不对称布置3种不同的方式下，通过调整燃烧器一次风挡板角度，对3种布置方式下燃烧器的阻力特性、浓淡风比及浓缩比进行了研究，旨在确定一次风挡板角度与分离挡板对燃烧器浓淡分离的影响，以便提高水平浓淡燃烧器的性能。

The gas solid interaction was studied, the solid concentration and particle size distribution contours downstream of the nozzle were obtained. The particle roping mechanism in a coal conveying pipe with large diameter was also studied with the fiber probe. The on-line coal concentration measuring facility is needed for NO〓 reduction. In this work, a set of on-line coal concentration measuring facility was developed and installed in the coal conveying pipes of a 660MW capacity utility boiler, which can give on-line accurate coal concentration information for the operator.

论文首次采用基于光学波动法的激光光纤探针，对高浓度的低NO〓燃烧器出口的气固两相流动的详细结构进行了试验，研究了配300 MW煤粉燃烧锅炉的燃烧器出口高浓度气固相射流中颗粒浓度、粒度随射流发展的演变规律，分析了利用水平浓淡燃烧器和齿形燃烧器实现对低NO〓燃烧有利的气固结构，并验证了基于DES方法的气固两相数值模拟的计算结果。

For example, it may prove difficult to cope with the in-furnace aerodynamic characteristics resulting from the use of a swirl burner on the arch-crown of the W-shaped boiler. In such a case one will not only be deprived of the advantages attributed to the use of the swirl burner but also suffer from a multitude of troublesome issues.

但采用旋流燃烧器后，由于W型锅炉燃烧的特殊性，给锅炉的设计和运行带来了新的情况，如对旋流燃烧器在W型锅炉拱顶采用旋流燃烧器后炉内的空气动力特性不能很好得到掌握，不但得不到旋流燃烧器所带来的优点，还会引起很多问题。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了