引發熱風爐出現振動的因素有哪些？

管道成都收賬振動涉及到很多成都找人公司工程領域。對於大型熱風爐成都收賬振動問題，目前國內研究得還不多。高爐熱風爐是向高爐冶煉提供熱風收賬重要大型換熱設備。熱風爐出現振動，估計有幾種引發因素：一是以脈動燃燒為主引發成都找人公司振動；二是管路系統的振動；三是二者耦合產生的振動。熱風爐的管路系統，主要是用來輸送煤氣、助燃空氣、冷和熱空氣以及煙氣等。就管路系統的振動來說，需要有激振力的作用才能發生。除瞭燃燒脈動力的作用之外，更關鍵的是氣源動力的影響，如助燃風機運轉動力、煤氣壓力，還有管路系統結構與流場之間的相互作用力等。當激振力的頻率與管路系統結構的固有頻率接近或相重合時，就會出現復雜的耦合頻率效應，郾達到管路系統的共振。其結果不僅影響到熱風爐的運轉指標，更為嚴重的是對熱風爐和管路系統造成破壞，使生產時刻存在安全隱患。
Pipeline vibration involves many engineering fields. At present, there is not much research on the vibration problem of large-scale hot blast stove. Blast furnace hot blast stove is an important large-scale heat exchanger for blast furnace smelting. It is estimated that there are several factors causing the vibration of hot blast stove: one is the vibration caused mainly by pulsating combustion; the other is the vibration of pipeline system; the third is the vibration caused by the coupling of the two. The piping system of hot blast stove is mainly used for conveying gas, combustion-supporting air, cold and hot air and flue gas. For the vibration of pipeline system, it is necessary to have the effect of exciting force. In addition to the role of combustion pulse power, the more critical is the influence of gas source power, such as the power of combustion-supporting fan, gas pressure, and the interaction between pipeline system structure and flow field. When the frequency of the exciting force is close to or coincides with the natural frequency of the pipeline system structure, the complex coupling frequency effect will occur and the resonance of the pipeline system will be achieved. The result not only affects the operation index of hot blast stove, but also destroys the hot blast stove and pipeline system, which causes potential safety hazards in production. 有焰燃燒強度及燃燒穩定性與煤氣、空氣的混合情況及著火條件密切相關。熱態試驗時，當煤氣、空氣的質量流量一定時，隨著空氣預熱溫度的提高，循环區體積增大，高溫的回旋區產物進入主流區，使局部混合好的空氣、煤氣迅速被加熱燃燒，燃燒產物向四周膨脹。這不僅使紊流增加，而且使斷面壓差增大。瞬間燃燒所生成的高溫燃燒產物橫向運動，使回旋區被壓縮變窄。此時回旋區氣體量減少，主流區著火條件變弱，燃燒溫度下降。這時回旋區又回到原來的狀態，較多的回旋區高溫產物又進入主流區，重復上述過程。這種周期性的燃燒變化使火焰峰面必是周彩色沥清地坪期性的變化曲面。曲面的波峰、波谷時大時小，故產生瞭燃燒噪聲，曲面波動劇烈時就是不穩定燃燒，或稱脈動燃燒，嚴重時就為燃燒振動。
Flame combustion intensity and combustion stability are closely related to the mixture of gas and air and ignition conditions. When the mass flow rate of gas and air is constant, the volume of circulation zone increases with the increase of air preheating temperature, and the products of high-temperature gyration zone enter the mainstream zone, which makes the partially mixed air and gas burn rapidly, and the combustion products expand around. This not only increases the turbulence but also increases the pressure difference of the section. The transverse movement of high-temperature combustion products generated by instantaneous combustion makes the gyrate narrow. At this time, the gas in the raceway decreases, and the ignition conditions in the mainstream area become weaker and the combustion temperature decreases. At this time, the cyclotron region returns to its original state, and more high temperature products in the cyclotron region enter the mainstream region, repeating the above process. The periodic combustion changes the surface of the flame to a periodic surface. The peak and trough of the curved surface are large and small, so the combustion noise is generated. When the curved surface fluctuates violently, it is unstable combustion, or pulsating combustion, and when it is serious, it is combustion vibration.
許多熱風爐在正常生產時出現燃燒振動，對成都找人公司管路系統、助燃風機及其燃燒器等相關要害部位，都造成損害。
Many hot blast stoves appear combustion vibration in normal production, which causes damage to piping system, combustion fan and burner of hot blast stoves.
關於燃燒振動問題，17世紀70年代B.Higging曾進行過專門研究。透水地坪後來，L.Rayleigh也對熱氣柱現象進行瞭系統研究。他們認為火焰發聲是管內氣柱致密時受熱，氣柱稀疏時被奪走熱量產生振動所致；反之，則衰減。這種振動與燃料供應管道的長度有關。通過實驗和理論分析認為安裝黑爾姆霍茲(Heimholtz)共鳴器，對曲止單純的燃燒振動是遺常采用的簡單切實的方法。
In 1670s, B.Higging carried out special research on combustion and vibration. Later, L.Rayleigh also made a systematic study of the phenomenon of hot gas column. They think that the flame sound is caused by the heat when the gas column is dense and the vibration when the gas column is sparse. On the contrary, the sound is attenuated. This vibration is related to the length of the fuel supply pipeline. Through experiment and theoretical analysis, it is believed that installing Heimholtz resonator is a simple and practical method for simple combustion vibration of Quzhi.