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电磁脉冲阀 electromagnetic pulse valve

近年来,由于国家实施日趋严格的排放标准,袋式除尘器越来越占据市场优势。而以强力清灰为特征的脉冲喷吹袋式除尘器是目前袋式除尘器领域内发展最快、应用最广泛的一种高效除尘设备。可达到极低的颗粒排放浓度,有效控制影响大气质量和人体健康的细微粒子如pm2.5等的污染,在大气污染治理中发挥重要作用。

as the national has implemented increasingly stringent emission standards recent years, bag filter has taken increasingly dominant role in the market.among the pulse blow bag filters, the one with charater of powerful cleaning is an efficient dust removal equipment which develops very rapidly. the product is also very widely used as it is designed to achieve a very low particulate emission concentration which could effective control the air quality and human health effects of fine particles such as pm2.5 pollution. the equipment is now taking a very importmant role in the air polution treatment.

电磁脉冲阀是脉冲喷吹袋式除尘器清灰气流的发生机构。它的性能和质量是决定脉冲喷吹袋式除尘器清灰效果和装备水平的一个重要因素。

electromagnetic pulse valve is the generating equipment for cleaning flow of the pulse bag filter. it's performance and quality determine the key factor for cleaning effect and equipment level of pulse bag filter.

半个世纪以来,电磁脉冲阀采用橡胶膜片作为脉冲阀的开关元件一直沿用至今,为脉冲喷吹袋式除尘器提供清灰气源,促进了脉冲喷吹清灰技术的发展和应用,为人类治理大气污染作出了贡献。由于橡胶膜片依靠弹性变形产生位移而实现脉冲阀的开启和关闭的特性,限制了橡胶膜片类脉冲阀向大喷量、小体积方向发展,也影响其喷吹性能的提高。

for half a century, rubber diaphragm has been broadly used as the switch component for a solenoid valve which supplies the air resource to the pulse-jet bag filter, promoted the development of pulse jet cleaning technology and contributed to the pollution control for society as well. at the same time, rubber sheet achieve the on-off based on its elastic deformation movements. that  limits the valve to meet the trend of the filter system design requirement which is bigger blow performance and smaller size.

为了满足袋式除尘器向大型、高效、长袋、高温方向发展,本公司研制成功采用柱塞(滑动阀片)取代橡胶膜片的新型电磁脉冲阀,柱塞类电磁脉冲阀具有更高的喷吹峰值压力和上升速率,从而产生更强的清灰气流,在同等条件下,可增加滤袋清灰面积20%,同时柱塞类脉冲阀结构紧凑,体积缩小10%,适合滤袋行间距布置。由于提高了耐温和耐腐蚀性能,从而具有更长的使用寿命。

to meet the bag filtration system developing trend, which is large scale, high efficiency, long bag and higher temperature, our company developed piston style valve (slide flap) instead of the diaphragm. the piston style valve has higher pulse peak value and quicker climbing speed. thus it can generate stronger pulse air flow, increase dust cleaning area 20% under the same condition and reduce the installation volume 10% less to make the bag layout more efficient. also because the piston design has higher heat resisting and corrosion preventing nature, it will give the valve longer operating life.

电磁脉冲阀是一种瞬态(50~250ms)开启的阀门。在传统的脉冲阀产品资料中一般只叙述型号、规格、外形尺寸、使用技术条件、膜片寿命、流量系数kv/cv等内容,而其重要的喷吹性能却没有表述。在本产品手册中向用户提供了每一种电磁脉冲阀喷吹性能的主要参数:如输出输入压力比、输出压力上升速率、气电脉冲宽度差、喷吹流量等数据,并给出喷吹气量曲线图、开关特性图。供用户选用时参考,使脉冲喷吹袋式除尘器清灰装置的组成更加科学合理,有利于降低能耗和延长滤袋使用寿命。

electromagnetic pulse valve is a valve to open transiently from 50 to 250ms. in the product information for traditional pulse valve products, it only describes the models, specifications, dimensions, technical conditions for usage, diaphragm life, flow coefficient etc., yet the important description on its blowing performance is commonly neglected. in the product manual prepared by shangtai, it outlines the key indicators for every type of electromagnetic pulse valve, like output-input pressure ratio, the output rate of pressure rise, the pulse width difference between gas and power, injection flow and etc. it also provides injection volume curve and switching characteristics figures for user reference. based on the information, the equipment composition of pulse blow bag filter could be more scientifically reasonable and the filter bag life could be extended with energy saving as well.

脉冲喷吹袋式除尘器清灰装置由分气箱、电磁脉冲阀、喷吹管等组成一个系统,在这个系统中电磁脉冲阀提供了清灰的振动气源。喷吹气流需经过喷吹管的输送和分配,从喷吹管上喷吹孔喷出的气流在滤袋内形成冲击波和逆向气流使滤袋变形,剥离外壁堆积的尘饼。同时清灰装置要通过现场调试,建立合理的清灰(喷吹)制度。“细节决定成败”,只有重视每一个细节,正确掌握每一个细节的规律,才会有整个系统的最佳状态。

pulse blow bag filter is a machinery system combined with manifold box, electromagnetic pulse valve, injection pipe and etc. among the components, the electromagnetic pulse valve provides the vibrating flow for dust removal.the blow flow is transitted and distributed through the blow pipes and forms the shock wave and reverse flow in the filter bag through the holes on the pipes. the filter bag is then deformed and the dustcake stacked on the outer wall is peeled off.
the dust remover equipment should be onsite adjusted to establish a reasonable dust removing(blowing) mechanism.details determine success or failure, only by focusing on every details and correctly grasping principles of each details, may the whole system reach the best performance.     

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