CAJ | 학술논문

为了考查多层丝网结构对连通容器内气体爆炸的抑制作用,以甲烷-空气混合物为研究对象,利用0.022 m3和0.113 m32个球形容器与一段2 m长的管道构成的连通容器进行了一系列丝网结构的抑爆实验,对比分析了20,40,60目和1,3,5,7,9层等不同丝网结构对连通容器的抑爆效果,并通过理论分析和数据处理得到最佳的抑爆结构。结果表明,丝网结构对传爆容器中的爆炸强度的影响要大于起爆容器；当丝网层数较少时,目数对大、小球的爆炸压力影响较小,丝网结构对连通容器不但没有抑爆作用,反而有增加爆炸强度的作用；当丝网层数较多时,目数对大、小球的爆炸压力影响较大；当丝网目数相同时,层数越多,爆炸抑制效果越好。实验条件下,5层和7层分别是40目和60目丝网结构抑爆的临界层数；与5层40目丝网结构相比,7层60目的丝网抑爆效果更好。因此,在实际设计中,应根据其综合作用选择最佳的抑爆结构。
위료고사다층사망결구대련통용기내기체폭작적억제작용,이갑완-공기혼합물위연구대상,이용0.022 m3화0.113 m32개구형용기여일단2 m장적관도구성적련통용기진행료일계렬사망결구적억폭실험,대비분석료20,40,60목화1,3,5,7,9층등불동사망결구대련통용기적억폭효과,병통과이론분석화수거처리득도최가적억폭결구。결과표명,사망결구대전폭용기중적폭작강도적영향요대우기폭용기；당사망층수교소시,목수대대、소구적폭작압력영향교소,사망결구대련통용기불단몰유억폭작용,반이유증가폭작강도적작용；당사망층수교다시,목수대대、소구적폭작압력영향교대；당사망목수상동시,층수월다,폭작억제효과월호。실험조건하,5층화7층분별시40목화60목사망결구억폭적림계층수；여5층40목사망결구상비,7층60목적사망억폭효과경호。인차,재실제설계중,응근거기종합작용선택최가적억폭결구。
A series of experiments were conducted to study the suppressive effect of multi-layer mesh structure on methane-air mixture explosion in linked vessels. The linked vessels are composed of two spherical vessels, 0. 022 m3 and 0. 113 m3 in volume, and a pipeline, 2 meters in length. Explosion suppression effect was analyzed for dif-ferent explosion suppression structures with different layer number and different mesh number. The most reasonable multi-layer mesh structures were obtained through theoretical analysis and data comparisons of the experimental re-sults. The results show that the number of multi-layer mesh has greater impact on explosion intensity in the primary vessel than that in the secondary vessel. The combination of different layer number and mesh number has different explosion suppression effect on the linked vessels. The number of mesh has a slight effect on explosion pressure in both the vessels when the number of layers is few. Even multi-layer mesh structure increases the intensity of explo-sion in linked spherical vessels and pipelines instead of suppressing. When the number of layers is more, the explo-sion pressure in both the vessels is greatly impacted by the number of mesh. When the number of mesh is constant, the more the number of layers, the better the explosion suppression effect. Under the experimental conditions, 5 layers and 7 layers are critical number of layers for 40 mesh and 60 mesh explosion suppres-sion structure respectively. Compared with 5 layers and 40 mesh structure, 7 layers and 60 mesh explosion suppres-sion structure is better. Therefore, in actual explosion protection design, the best explosion suppression structure should be decided by taking into account of the comprehensive effect of layer number and mesh number.