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学者姓名：王金贵
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Abstract ：
为了氢气‑甲烷混合燃料的安全使用，利用内径和长度皆为300 mm的圆柱形密闭容器进行爆炸实验，研究了掺氢比（XH2=0~100%）和当量比（Φ=0.6~1.4）对火焰演化和爆炸压力特性的影响，并采用CHEMKIN软件分析了氢气‑甲烷‑空气预混气体的层流燃烧速度及其敏感性。结果表明，在当量比（Φ）不变的情况下，随着掺氢比（XH2）的增加，最大爆炸压力（pmax）、最大压力上升速率（（dp/dt）max）、爆炸指数（KG）以及层流燃烧速度增大，到达最大压力和最大压力上升速率的时间（tA和tB）逐渐缩短。点火后，火焰表面由最初的较为光滑，逐步形成蜂窝状的火焰胞格结构。在相同当量比（Φ）下，随着掺氢比（XH2）的增加，从点火到爆炸结束的时间大幅缩短，且在同一时刻，火焰半径增大，火焰表面皱褶增多。反应敏感性计算结果表明，基元反应H+O2⇌O+OH（R38）和H+CH3（+M）⇌CH4（+M）（R52）对层流燃烧速度的影响最大；关键自由基（H·、O·、OH·）的最大摩尔分数与层流燃烧速度正相关，且掺氢比（XH2）的增加，使得关键自由基的最大摩尔分数显著增大；基元反应R38和R84是影响关键自由基生成速率（ROP）的最主要反应。
Keyword ：
化学动力学分析 化学动力学分析 层流燃烧速度 层流燃烧速度 掺氢甲烷 掺氢甲烷 火焰 火焰 爆炸压力 爆炸压力
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| GB/T 7714 | 梅亮 , 郭进 , 黄时凯 et al. 密闭容器内氢气‑甲烷‑空气的爆炸特性 [J]. | 含能材料 , 2025 : 1-12 . |
| MLA | 梅亮 et al. "密闭容器内氢气‑甲烷‑空气的爆炸特性" . | 含能材料 (2025) : 1-12 . |
| APA | 梅亮 , 郭进 , 黄时凯 , 王金贵 , 高毅 . 密闭容器内氢气‑甲烷‑空气的爆炸特性 . | 含能材料 , 2025 , 1-12 . |
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The explosive properties of methane-ethane mixtures with different concentrations and ethane proportions (phi value) were studied in a 1 m(3) spherical vessel, along with the inhibitory effects of N-2 and CO2. The results indicate that when the concentration of the total gas mixture was 10%, P-max and (dp/dt)(max) first increased and then decreased with the increase of phi. In contrast, for total gas mixture concentrations of 8% and 12%, P-max and (dp/dt)(max) showed a single change. Under the test conditions of this experiment, P-max reached its maximum value when the total gas mixture concentration was 10% and phi = 0.1. The explosion suppression of gas mixtures showed that both N-2 and CO2 could significantly reduce P-max and (dp/dt)(max) when their volume fractions increased to 9%. While the continued addition of N-2 and CO2 did not significantly reduce P-max and (dp/dt)(max), it further delayed the arrival time of the peak, with a greater magnitude of delay for CO2. Regarding the flame propagation process, the same volume fraction of CO2 can reduce the flame propagation speed more effectively, and the bottom of the flame is more significantly affected by buoyancy instability.
Keyword ：
explosion pressure explosion pressure flame propagation flame propagation gas mixtures gas mixtures inert inhibitory gas inert inhibitory gas
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| GB/T 7714 | Wang, Jingui , Hu, Xingwang , Hu, Qiangqiang et al. Experimental study on the effects of N2 and CO2 inerting on methane-ethane-air deflagrations [J]. | PROCESS SAFETY PROGRESS , 2025 , 44 (2) : 279-294 . |
| MLA | Wang, Jingui et al. "Experimental study on the effects of N2 and CO2 inerting on methane-ethane-air deflagrations" . | PROCESS SAFETY PROGRESS 44 . 2 (2025) : 279-294 . |
| APA | Wang, Jingui , Hu, Xingwang , Hu, Qiangqiang , Liang, Zhixing , Zhang, Su . Experimental study on the effects of N2 and CO2 inerting on methane-ethane-air deflagrations . | PROCESS SAFETY PROGRESS , 2025 , 44 (2) , 279-294 . |
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To mitigate the damage caused by methane explosions, this paper conducts experiments on methane explosion suppression by CO2 and air (for comparison)-driven NaHCO3 powder using a 1 m3 spherical explosion test system. The results indicate that the explosion suppression effect was gradually enhanced with the increase of NaHCO3 powder concentration. Driven by air, as the concentration of NaHCO3 powder increases, the flame becomes darker and the propagation speed slows down. After adding 700 g/m3 NaHCO3 powder, methane cannot be ignited. The significant concentration range for explosion suppression efficiency is between 200 g/m3 and 500 g/m3. Driven by CO2, the flame evolves more slowly, the flame shape is more irregular, and the flame brightness is lower. Compared with air propulsion, the required NaHCO3 powder for complete explosion suppression is reduced by 100 g/m3, and the required NaHCO3 for related explosion suppression effects is reduced by 100 g/m3. The explosion suppression effect of CO2 driven NaHCO3 powder is superior to the sum of the suppression effects of high-pressure CO2 gas injection and air driven NaHCO3 powder. The explosion suppression effect of CO2 enables NaHCO3 powder to fully decompose and exert the best inhibitory effect; The CO2 generated by the decomposition of NaHCO3 can further enhance the suppression effect of CO2, and the two can thus produce a synergistic inhibitory effect.
Keyword ：
CO2 CO2 Explosion pressure Explosion pressure Explosion suppression mechanism Explosion suppression mechanism Methane explosion suppression Methane explosion suppression NaHCO3 powder NaHCO3 powder
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| GB/T 7714 | Wang, Jingui , Chen, Jianjun , Zhu, Hangqin et al. Experimental study on methane explosion suppression by CO2-driven NaHCO3 powder [J]. | FUEL , 2025 , 386 . |
| MLA | Wang, Jingui et al. "Experimental study on methane explosion suppression by CO2-driven NaHCO3 powder" . | FUEL 386 (2025) . |
| APA | Wang, Jingui , Chen, Jianjun , Zhu, Hangqin , Xue, Shaojun , Zhang, Su . Experimental study on methane explosion suppression by CO2-driven NaHCO3 powder . | FUEL , 2025 , 386 . |
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密闭容器内预混气体爆炸非常复杂,为研究点火位置对甲烷/空气预混气体爆炸特性的影响,在初始压力为101 kPa和初始温度为300 K的环境下,开展1 m3密闭球形爆炸容器中10 vol％甲烷浓度的中心点火爆炸实验,并使用Fluent数值模拟软件,采用LES湍流模型和Zimont燃烧模型,研究不同点火位置(中心点火、0.5R点火、R点火)对容器内甲烷/空气预混气体爆炸特性的影响,包括火焰结构演化、爆炸温度、爆炸压力、爆炸压力上升速率.结果表明:(1)在中心、0.5R和R处点火时,火焰分别向四周膨胀直至容器壁面、轮廓由最初的"左薄右厚"逐渐转变为"左侧凸起的尖角"和在壁面处从"圆弧形"逐渐拉伸转变成"尖形"向左侧发展;(2)不同点火位置下温度场存在温度梯度,升温规律均由点火中心能量持续向外释放,温度不断积聚升高;(3)不同点火位置下爆炸压力变化趋势基本一致,由于壁面绝热,最终最大爆炸压力均稳定在766 kPa左右;(4)中心点火时最大爆炸压力上升速率最大,较0.5R点火和R处点火分别增大了 94.5％和 141.8％.
Keyword ：
大涡模拟 大涡模拟 密闭球形容器 密闭球形容器 火焰前锋 火焰前锋 点火位置 点火位置 甲烷/空气预混气体 甲烷/空气预混气体
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| GB/T 7714 | 王金贵 , 梁志星 , 胡强强 et al. 点火位置对甲烷/空气预混爆炸特性影响的数值模拟研究 [J]. | 爆破 , 2024 , 41 (1) : 186-195 . |
| MLA | 王金贵 et al. "点火位置对甲烷/空气预混爆炸特性影响的数值模拟研究" . | 爆破 41 . 1 (2024) : 186-195 . |
| APA | 王金贵 , 梁志星 , 胡强强 , 朱杭钦 , 胡超 , 魏林慧 . 点火位置对甲烷/空气预混爆炸特性影响的数值模拟研究 . | 爆破 , 2024 , 41 (1) , 186-195 . |
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A crucial industry for improving society's sustainable development is the power sector. To address issues with the ineffectiveness of electric power emergency response during emergencies and the unclear division of duty among emergency subjects. A prefecture-level city power supply company to respond to the "In-Fa" typhoon, for example, to build a "1 + N" two-level emergency rapid response unit. Furthermore, it is proposed from the emergency response, emergency coordination, emergency material reserves, etc., to build a "full-chain" type of power emergency quick reaction system. Case studies have revealed that the quick response system's emergency combat capability, catastrophe preventive and mitigation capability, and emergency security capability have all improved. The construction of a "full-chain" type of power emergency rapid response system specialized and standardized the power emergency response system and provided a reference basis for the power industry's emergency response.
Keyword ：
Electric power system Electric power system Emergency quick response Emergency quick response Internal and external coordination Internal and external coordination Multi -linkage Multi -linkage Standardization Standardization
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| GB/T 7714 | Zhang, Su , Liu, Xiaolu , Wang, Jingui . Research on the construction of a "full-chain" rapid response system for power emergencies [J]. | HELIYON , 2024 , 10 (4) . |
| MLA | Zhang, Su et al. "Research on the construction of a "full-chain" rapid response system for power emergencies" . | HELIYON 10 . 4 (2024) . |
| APA | Zhang, Su , Liu, Xiaolu , Wang, Jingui . Research on the construction of a "full-chain" rapid response system for power emergencies . | HELIYON , 2024 , 10 (4) . |
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以牡蛎壳粉部分替换传统水泥基材料,在实现牡蛎壳废物利用的同时可有效降低建材成本.利用牡蛎壳粉作为普通硅酸盐水泥掺合料,探讨其不同掺杂量及不同粉磨方式对水泥胶砂强度及安定性的影响,确定了牡蛎壳粉的适宜添加量,并用XRD、SEM及EDS等测试分析手段表征不同掺量下胶凝试块的结构及性能变化.实验结果表明,牡蛎壳的球磨方式对水泥胶砂强度有明显影响,掺加湿法球磨牡蛎壳粉的胶凝材料的强度高于相应的掺加干法球磨的样品.牡蛎壳粉的掺加量为5%时,试样的抗压强度和抗折强度分别达到49.2 MPa和7.55 MPa,显著高于未掺加的空白样品.通过安定性实验制得的试样经过预养、沸煮之后,表面均光滑、无裂纹,体积无明显膨胀或收缩,表明掺杂牡蛎壳粉的胶凝材料安定性良好.微观结构表征结果显示牡蛎壳粉在水泥胶凝材料中独立存在,主要起惰性填充作用.利用牡蛎壳微粉部分替代水泥基材料是可行的,既可以改善水泥基材料综合性能,又能节约材料成本、减少环境污染,具有良好的应用前景.
Keyword ：
安定性 安定性 抗压强度 抗压强度 抗折强度 抗折强度 牡蛎壳粉 牡蛎壳粉
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| GB/T 7714 | 钟彬扬 , 梁玉兰 , 陈志杰 et al. 牡蛎壳微粉改性水泥基复合材料性能及微观结构研究 [J]. | 无机盐工业 , 2024 , 56 (10) : 135-140 . |
| MLA | 钟彬扬 et al. "牡蛎壳微粉改性水泥基复合材料性能及微观结构研究" . | 无机盐工业 56 . 10 (2024) : 135-140 . |
| APA | 钟彬扬 , 梁玉兰 , 陈志杰 , 廖启华 , 王金贵 . 牡蛎壳微粉改性水泥基复合材料性能及微观结构研究 . | 无机盐工业 , 2024 , 56 (10) , 135-140 . |
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The explosion venting experiments of hydrogen-air premixed gas were carried out in a 1-m3 cuboid container. The effects of the obstacles parallel to the vent on the structural response of the container during the explosion venting were investigated. The internal overpressure and acceleration of the vessel wall were captured by acceleration and pressure sensors, respectively. The time-frequency distributions of pressure and acceleration were obtained by a Short-Time Fast Fourier Transform. The effects of obstacles on the dynamic structure response were studied by analyzing the internal overpressure, vibration acceleration, and high-speed videos. With the increase of obstacles, the maximum overpressure and vessel vibration increased, and the maximum overpressure and maximum vibration acceleration appeared earlier. The vibration signals had two dominant frequencies, 300-600 Hz and 900-1200 Hz. The low-frequency vibration (300-600 Hz) was induced by acoustic oscillation of the internal pressure. The high-frequency vibration (900-1200 Hz) was a container resonance triggered by the coupling of the flame and the acoustic wave. As VBR increased, the duration of high-frequency oscillations decreased gradually; the increase of obstacles would weaken the high-frequency structural response of the container. The results can guide the design of hydrogen explosion protection and mitigation measures.
Keyword ：
obstacle obstacle structural response structural response vented hydrogen-air explosion vented hydrogen-air explosion vibration vibration
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| GB/T 7714 | Wang, Jingui , Liang, Zhixing , Lin, Jiacheng et al. Structural response for vented hydrogen-air deflagrations: Effects of volumetric blockage ratio [J]. | PROCESS SAFETY PROGRESS , 2023 , 43 : S284-S292 . |
| MLA | Wang, Jingui et al. "Structural response for vented hydrogen-air deflagrations: Effects of volumetric blockage ratio" . | PROCESS SAFETY PROGRESS 43 (2023) : S284-S292 . |
| APA | Wang, Jingui , Liang, Zhixing , Lin, Jiacheng , Feng, Hong , Zhang, Su . Structural response for vented hydrogen-air deflagrations: Effects of volumetric blockage ratio . | PROCESS SAFETY PROGRESS , 2023 , 43 , S284-S292 . |
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Experiments were performed in a 90-L vessel with a side vent to investigate the effects of transverse concentration gradients on the vented explosion of non-uniform methane-air mixture. Controlled by a mass flow meter, methane was injected uniformly into the vessel through 18 nozzles that are evenly distributed at the top to configure a methane-air mixture with an average methane volume fraction of 10.9%. Various transverse con-centration gradients were obtained by altering the free diffusion time of the methane in the vessel. The deflagration flame was recorded through a high-speed camera at a frequency of 1000 Hz, and the internal overpressure at different locations was captured through three piezoelectric sensors. Experimental results reveal that larger concentration gradient resulted in lower flame propagation rate, longer time for the burst of the vent cover, and stronger pressure oscillations. Concentration gradient affects the typical flame structure, especially the formation and development of the tulip flame. Under the present experimental conditions, Helmholtz oscillations occurred in all tests. Concentration gradient has a negative correlation with the frequency of Helmholtz oscillations but a positive correlation with the duration of oscillations. In conclusion, the variation of concentration gradient obviously affects flame propagation and pressure evolution during vented explosions, which deserves more attention in the design of explosion protection.
Keyword ：
Helmholtz oscillation Helmholtz oscillation Methane-air mixture Methane-air mixture Transverse concentration gradient Transverse concentration gradient Vented explosion Vented explosion
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| GB/T 7714 | Wu, Jiahan , Wang, Jingui , Guo, Jin et al. Effects of transverse concentration gradients on the vented explosion of methane-air mixtures [J]. | JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES , 2023 , 86 . |
| MLA | Wu, Jiahan et al. "Effects of transverse concentration gradients on the vented explosion of methane-air mixtures" . | JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES 86 (2023) . |
| APA | Wu, Jiahan , Wang, Jingui , Guo, Jin , Zhang, Hanwen , Wang, Haozhe . Effects of transverse concentration gradients on the vented explosion of methane-air mixtures . | JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES , 2023 , 86 . |
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To investigate the effects of ignition position on the explosion of non-uniform methane-air mixtures, experiments were carried out in a closed pipe of 1 m length and 0.3m x 0.3 m cross-section. Methane is uniformly charged at the top of the pipe and then diffused freely, creating a concentration gradient. The concentration gradient of the methane-air mixture depends on the diffusion time. The effects of the three ignition positions - top (IP1), center (IP2) and bottom (IP3) - on the flame propagation at different ignition delay time (tig) were investigated. The ignition position and tig are the key factors influencing the success of ignition. For IP2 and IP3, the flame propagation velocity increases with the increase of tig, but the flame propagation velocity at IP1 does not change significantly with an increase in tig. When tig <= 25min, the temperature (Tmax) and maximum overpressure (Pmax) in the pipe at IP1 are significantly higher than those at IP2 and IP3. When the methane-air mixtures are nearly uniform, the Tmax and Pmax at different ignition locations are almost identical. The maximum pressure rise rate, (dP/dt)max, was affected by the flame pipe collision and different flame shapes caused by the ignition position.
Keyword ：
Concentration gradient Concentration gradient Explosion Explosion Flame Flame Ignition position Ignition position Methane Methane
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| GB/T 7714 | Zhang, Hanwen , Guo, Jin , Wang, Jingui et al. Effects of ignition position on the explosion of methane-air mixtures with concentration gradients [J]. | JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES , 2023 , 85 . |
| MLA | Zhang, Hanwen et al. "Effects of ignition position on the explosion of methane-air mixtures with concentration gradients" . | JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES 85 (2023) . |
| APA | Zhang, Hanwen , Guo, Jin , Wang, Jingui , Wu, Jiahan , Wang, Haozhe . Effects of ignition position on the explosion of methane-air mixtures with concentration gradients . | JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES , 2023 , 85 . |
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基于自主搭建的1m3球形爆炸实验系统,通过分析火焰结构与传播过程来探究不同体积分数下的甲烷和氮气对火焰不稳定性的影响及其机制.研究结果表明,甲烷-空气预混气体火焰发展过程与甲烷体积分数直接相关,当甲烷体积分数接近爆炸极限,火焰明显上浮,浮力不稳定性是火焰失稳的主要因素.当甲烷体积分数在 7%～13%范围内时,火焰总体呈规则球形,在热-质扩散因素和流体力学因素相互促进或制约作用下,火焰总体不稳定性呈现先迅速增强后缓慢减弱的趋势.通过改变氮气添加比,发现流体力学不稳定性对氮气添加比的变化更为敏感,当氮气添加比(体积分数)大于 8%时,在流体力学不稳定性因素的主导影响下火焰稳定性迅速增强.
Keyword ：
惰化 惰化 火焰不稳定性 火焰不稳定性 甲烷爆炸 甲烷爆炸 马克斯坦长度 马克斯坦长度
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| GB/T 7714 | 王金贵 , 何伟杰 , 张成名 et al. N2对甲烷-空气预混气体爆炸火焰传播稳定性的影响 [J]. | 福州大学学报（自然科学版） , 2023 , 51 (4) : 582-588 . |
| MLA | 王金贵 et al. "N2对甲烷-空气预混气体爆炸火焰传播稳定性的影响" . | 福州大学学报（自然科学版） 51 . 4 (2023) : 582-588 . |
| APA | 王金贵 , 何伟杰 , 张成名 , 张苏 . N2对甲烷-空气预混气体爆炸火焰传播稳定性的影响 . | 福州大学学报（自然科学版） , 2023 , 51 (4) , 582-588 . |
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