外文翻譯----燃?xì)忮仩t控制系統(tǒng)-資料下載頁
2024-11-03 02:08本頁面
【導(dǎo)讀】鍋爐燃燒系統(tǒng)是使燃料燃燒所產(chǎn)生的熱量，適應(yīng)蒸汽負(fù)荷的需要，首先，要維持蒸汽母管的蒸汽。先減少燃料量，后減少空氣量”，以使鍋爐燃燒持續(xù)保持在無黑煙狀態(tài)；作條件、鍋爐的維護(hù)及安全運(yùn)行都最有利。在工業(yè)鍋爐燃燒過程中，用。低負(fù)荷和煙氣溫度過低等問題。采用PLC對鍋爐進(jìn)行控制時，由于它的。因而，可以解決以上由常規(guī)儀表控制難以解決的問題。風(fēng)量為前饋信號進(jìn)行PI調(diào)節(jié)，控制引風(fēng)機(jī)轉(zhuǎn)速;在鍋爐燃燒控制中，爐排電機(jī)停機(jī)，鍋爐緊急停爐，以保證安全生產(chǎn)。列PLC分別控制三臺鍋爐，安裝在中控室。進(jìn)行硬件組態(tài),所有的PID控制、聯(lián)鎖保護(hù)、開關(guān)量控制均在PLC上實(shí)現(xiàn)。控機(jī),并接收上位工控機(jī)的各種數(shù)據(jù)和控制命令。其中三臺作為并行運(yùn)行的操作員站,另一臺作為工。上位工控機(jī)采用西門子的WinCC軟件進(jìn)行人機(jī)界面的編制,并通。根據(jù)增減電熱管的判斷結(jié)果和目前。處理各種報警信息。維持在給定范圍內(nèi)。的偏差,采用模糊控制算法進(jìn)行調(diào)整,以達(dá)到快速調(diào)整出水溫度的目的。
【正文】 PID regulator added that the output of wind as a method of adjusting a given, but the wind of P IDconditioning control the output of the blower Frequency Control, but also by adjusting the ratio of motor control Grate The Frequency Control, in order to change the air supply and delivery of coal. To r educe the load of steam when the steam pressure in the disturbance, the introduction of steam flow for feedforward regulation. In this regulation circuit, will not only increase the output limiting Grate the online selftuning, and when the steam flow suddenly changes, also increased the oxyacetylene ratio of online selftuning, both to ensure that a sudden increase in the flow of steam Can guarantee that when the steam pressure is greater than 7 kg, can guarantee that a sudden reduction in the flow of steam when the steam pressure will not be overrun, allowing the system to maintain stability, also reached both energy conservation without the effect of black smoke. Water leakage temperature control system: mainly realizes acts according to the indoor outside temperature observed value and the outdoor wind speed, adjusts for the coal amount, the drum amount of wind and directs the amount of wind, thus realizes on demand to heat, the security economical environmental protection movement goal. Leaves the water temperature setting value along with the outdoor ambient temperature change automatic control. For between the coal amount basis water leakage temperature observed value and the given value deviation, uses the fuzzy control algorithm to make the adjustment, achieves the quickadjusting water leakage temperature the goal. At the same time, according to the efficiency of boiler realtime online putation39。s result, to carries on the trimming to the coal amount, thus guarantees boiler39。s economical bustion. The drum amount of wind basis gives the coal amount gentle breeze coal ratio the change, uses the conventional PID algorithm to make the adjustment, realizes ratio control, achieves burns pletely, the economical bustion goal. And according to the energy balance theory, uses pared to makes the online realtime adjustment from the optimization algorithm windward coal, causes the fuel and the air maintains the best allocated proportion throughout, realizes the fuel plete bustion. Directs the amount of wind basis chamber negative pressure observed value, uses the conventional PID algorithm to make the adjustment, and takes the drum amount of wind the forward feed quantity, realizes the forward feed reaction control, maintains the chamber the micro negative pressure condition,guarantees the boiler safe operation. References: 《 puter application》 .
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