煤氣發(fā)電機(jī)組的技術(shù)改進(jìn)研究

　　Research on Technical Improvement of Gas Generator Unit

　　雙孔燃?xì)獍l(fā)生器項(xiàng)目：基于航空發(fā)動(dòng)機(jī)燃燒室提出了一種雙孔燃?xì)獍l(fā)生器項(xiàng)目。設(shè)計(jì)并制造了一套單噴嘴燃?xì)獍l(fā)生器。在不同條件下進(jìn)行了熱試車，以驗(yàn)證燃?xì)獍l(fā)生器的性能，并對(duì)乙醇供應(yīng)系統(tǒng)的工作模式、貧燃熄火極限測(cè)試和系統(tǒng)順序優(yōu)化進(jìn)行了研究。測(cè)試結(jié)果表明，該發(fā)生器的技術(shù)設(shè)計(jì)方案可行，質(zhì)量流量、溫度和壓力均滿足設(shè)計(jì)目標(biāo)。平穩(wěn)的點(diǎn)火曲線表明發(fā)生器點(diǎn)火可靠，燃燒性能穩(wěn)定，并且該燃?xì)獍l(fā)生器具有分步啟動(dòng)的優(yōu)點(diǎn)；通過優(yōu)化乙醇供應(yīng)順序，解決了閥門工作順序引起的供應(yīng)管道沖擊效應(yīng)問題，并結(jié)合氣壓調(diào)節(jié)優(yōu)化，大大縮短了燃?xì)獍l(fā)生器的啟動(dòng)時(shí)間；該燃?xì)獍l(fā)生器具有較大的貧燃熄火極限，能夠在寬工作范圍內(nèi)穩(wěn)定工作。

　　Double hole gas generator project: A dual hole gas generator project based on the combustion chamber of aircraft engines is proposed. Designed and manufactured a single nozzle gas generator. Hot commissioning was conducted under different conditions to verify the performance of the gas generator, and the working mode, lean burn out limit test, and system sequence optimization of the ethanol supply system were studied. The test results indicate that the technical design scheme of the generator is feasible, and the mass flow rate, temperature, and pressure all meet the design objectives. A stable ignition curve indicates reliable ignition and stable combustion performance of the generator, and the gas generator has the advantage of step-by-step starting; By optimizing the ethanol supply sequence, the problem of supply pipeline impact caused by valve operation sequence has been solved, and combined with pressure regulation optimization, the start-up time of the gas generator has been greatly shortened; This gas generator has a large lean burn out limit and can operate stably over a wide working range.

　　鋼鐵行業(yè)煤氣發(fā)電機(jī)組效率提升技術(shù)：煤氣鍋爐配套蒸汽輪機(jī)發(fā)電機(jī)組是目前鋼鐵行業(yè)富余煤氣的主要利用方式。隨著煤氣發(fā)電技術(shù)的不斷迭代，不同代際發(fā)電技術(shù)的能源利用效率差異顯著，同代際煤氣發(fā)電機(jī)組能源利用效率也參差不齊。結(jié)合唐鋼公司提升 100MW 超高溫亞臨界煤氣發(fā)電機(jī)組能源利用效率的實(shí)踐，探究煤氣發(fā)電機(jī)組效率提升技術(shù)，以期為鋼鐵行業(yè)節(jié)能創(chuàng)效提供參考。

　　Efficiency improvement technology for gas generators in the steel industry: Gas boilers paired with steam turbine generators are currently the main way to utilize surplus gas in the steel industry. With the continuous iteration of gas power generation technology, there are significant differences in energy utilization efficiency between different generations of power generation technology, and the energy utilization efficiency of gas power generation units within the same generation is also uneven. Based on the practice of Tangshan Iron and Steel Company in improving the energy utilization efficiency of 100MW ultra-high temperature subcritical gas generator units, this paper explores the efficiency improvement technology of gas generator units, in order to provide reference for energy conservation and efficiency creation in the steel industry.

　　煤氣發(fā)電機(jī)組的噪聲控制研究

　　 Research on Noise Control of Gas Generator Unit

　　對(duì)以天然氣為燃料的小型發(fā)電機(jī)組進(jìn)行了不同開發(fā)的隔音罩對(duì)噪聲排放影響的實(shí)驗(yàn)研究。在發(fā)電機(jī)排氣前方的五個(gè)電負(fù)荷條件（0％、25％、50％、75％和 100％負(fù)荷）下測(cè)量了無(wú)罩發(fā)電機(jī)和被開發(fā)的隔音罩覆蓋的發(fā)電機(jī)的聲音信號(hào)。根據(jù) SAE J1074 測(cè)試程序測(cè)量聲音信號(hào)。使用快速傅里葉變換（FFT）算法將記錄的數(shù)字聲音信號(hào)轉(zhuǎn)換到頻域。結(jié)果表明，簡(jiǎn)單罩（SE）和改進(jìn)罩分別在頻率大于 800Hz 和 250Hz 時(shí)有效地衰減了發(fā)電機(jī)噪聲。半覆蓋改進(jìn)罩（SME）和全覆蓋改進(jìn)罩（FME）在衰減發(fā)電機(jī)噪聲方面的聲學(xué)性能優(yōu)于 SE 罩。所有罩的聲學(xué)性能隨著發(fā)電機(jī)負(fù)荷的增加而降低，特別是在滿負(fù)荷條件下。方差分析（ANOVA）的結(jié)果表明，發(fā)電機(jī)負(fù)荷條件、罩設(shè)置模式及其相互作用對(duì)發(fā)電機(jī) A 加權(quán)總聲有顯著影響（P＜0.01）。鄧肯多范圍測(cè)試的結(jié)果表明，用不同類型的罩覆蓋發(fā)電機(jī)可將發(fā)電機(jī)聲級(jí)（93.2dB（A））顯著降低至 SE 的 88.4dB（A）、SME 的 87.2dB（A）和 FME 的 86.1dB（A）。他們還揭示了發(fā)電機(jī)聲音隨著發(fā)電機(jī)電負(fù)荷的增加而顯著增加（P＜0.01）。

　　An experimental study was conducted on the impact of different developed soundproof enclosures on noise emissions of small power generation units fueled by natural gas. The sound signals of the generator without a hood and the generator covered with a developed soundproof hood were measured under five electrical load conditions (0%, 25%, 50%, 75%, and 100% load) in front of the generator exhaust. Measure the sound signal according to the SAE J1074 test procedure. Convert the recorded digital audio signal to the frequency domain using the Fast Fourier Transform (FFT) algorithm. The results indicate that the simple cover (SE) and the improved cover effectively attenuate generator noise at frequencies greater than 800Hz and 250Hz, respectively. The acoustic performance of the semi covered improved hood (SME) and the fully covered improved hood (FME) in attenuating generator noise is superior to that of the SE hood. The acoustic performance of all covers decreases with increasing generator load, especially under full load conditions. The results of analysis of variance (ANOVA) indicate that the load conditions of the generator, the cover setting mode, and their interactions have a significant impact on the weighted total sound of generator A (P<0.01). The results of Duncan's multi range testing show that covering the generator with different types of covers can significantly reduce the generator sound level (93.2dB (A)) to 88.4dB (A) for SE, 87.2dB (A) for SME, and 86.1dB (A) for FME. They also revealed that the sound of the generator significantly increased with the increase of the generator's electrical load (P<0.01).

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