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本文介绍一种直接安装在水泥罐车上的计量水泥罐中水泥重量的计量系统。系统采用单片机,具有智能功能,使安装、调试、调零极为方便。这种系统尤其适合一罐水泥供应多个用户。 相似文献
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水泥从袋装发展到散装 ,并不是简单的包装差异 ,更重要的是一种生产资料在生产、流通、使用方式上的深刻变革 ,是建筑建材物资领域推进增长方式转变、调整产业、产品结构的重要举措 ,是我国实现可持续发展的一个重要内容。散装水泥 ,就是配合集中水泥搅拌厂等合理环节 ,在水泥运输、贮存、使用的全过程采用无尘装卸、密闭运输和机械化操作等措施 ,与传统袋装水泥相比 ,具有无可比拟的优越性。散装水泥的推广使用有利于改善大气质量 ,减少环境污染 ,建设文明城市。有资料显示 ,近几年来由于建筑业的飞速发展 ,加之施工尘污染与控制尚未引起足… 相似文献
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中国北车集团沈阳机车车辆有限责任公司经过对澳大利亚塔斯马尼亚铁路公司的基础设施及需求进行详细调研后,为其设计制造了新型散装水泥漏斗车。该新型车是一种重力卸货方式的专用水泥运输车,完全兼容塔铁公司现有铁路及装卸货站场设施。 相似文献
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现代企业引进物流理念、实施物流管理,最根本的目的就是为了降低成本,提高竞争力。对于散装水泥物流来说,从分析物流成本入手,进行物流成本管理,改善散装水泥物流,具有重要的意义。 相似文献
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王增才 《华北工学院测试技术学报》2000,14(3):188-192
目的介绍了两种直接安装在经罐车上用来计量水泥罐中水尼重量的计量系统8,一种为应变式计量系统,另一种为超声波测距式系统。方法 安装计量系统时无需改动原车的支承结构。结果 系统达到的计量精度为6%。结论 计量系统结构简单、成本低廉、装配方便,尤其适合为无计量地磅的工地供应罐装水泥。 相似文献
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目的 介绍了两种直接安装在水泥罐车上用来计量水泥罐中水泥重量的计量系统 ,一种为应变式计量系统 ,另一种为超声波测距式系统 .方法 安装计量系统时无需改动原车的支承结构 .结果 系统达到的计量精度为 6% .结论 计量系统结构简单、成本低廉、装配方便 ,尤其适合为无计量地磅的工地供应罐装水泥 相似文献
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《中国新技术新产品》2019,(21)
运输一直是水泥经销行业内的管理痛点,存在的信息沟通效率低、运输过程监管难、装卸签发不透明、财务结算风险高、运输管理成本大等问题是行业承运工作水平无法提升的关键因素,结合水泥运输管理和信息化开发技术现状,探讨研究和开发一套水泥运输智能信息化管理平台,规避现有存在的问题,达到运输动态实时知晓、数据账单实时出具、结算清点实时完成,从而降低运输风险和管理成本,提升运输服务水平。 相似文献
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为了降低燃煤电厂的磨机功耗,减少锅炉燃烧后的污染排放,通过分析磨煤机分离器返料的粒度和密度分布,对电厂采样物料进行稀相流化床分选去除黄铁矿等矿物质的实验研究,并对物料分选过程进行数值模拟。结果表明,粒径小于0.500 mm的分离器返料在流化床中具有较小的起始流化速度1.62 cm/s,流化床各层的密度和粒度具有很好的稳定性;物料中的黄铁矿等矿物质得到分离,上层和底层物料灰分质量分数分别为33.34%、73.42%,硫分质量分数分别为1.12%、8.96%,底层物中硫主要以黄铁矿的形式存在;气-固两相流稀相分选床的流场形态及颗粒运动数值模拟验证了实验结论。 相似文献
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利用CFD软件Fluent,基于颗粒动力学理论的双流体模型对循环流化床锅炉的3种二次风送风结构对炉膛内气-固两相流宏观流动特性的影响进行数值模拟,将3种结构下的计算结果进行对比分析。结果表明:二次风通常采用90°垂直入射的情况下,炉膛内颗粒的环-核分布结构及上稀下浓的分布不均匀性达到最大;二次风进口入射角为与轴向方向成60°向上入射情况下,炉膛内颗粒主要分布在炉膛中上部区域,不均匀程度减小,最有利于炉膛内的燃烧和提高传热效率,同时得到二次风的射流深度最大;二次风送入结构为渐缩型入射口的情况时,二次风射流深度最小,炉膛内偏流现象明显,在本文的操作条件下,并没有达到喷射的设计效果,还有待于进一步的研究。 相似文献
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Guilherme J. Castilho 《Particulate Science and Technology》2013,31(3):210-221
Experiments were performed with gas and solids flow in a 2.42 m high circulating fluidized bed (CFB). This equipment has both solids and gas fed into the downer section. Local solids holdup was measured using an optical fiber probe. By the axial solids concentration distribution, it was verified that (1) the curve that precedes the entrance into the riser provides further acceleration to the flow and (2) the abrupt exit causes an increase in solids concentration in the top zone. Results of radial distributions in the bottom zone show that the flow is more concentrated near the wall. For the exit zone, the distributions show high values of solids holdup both near the wall and on the axis. 相似文献
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The study of the triboelectrification process is the key factor to the successful industrial application of electrostatic separation in the field of plastics recycling. Therefore, the aim of the present work is to evaluate an original device for the laboratory study of this process. The original design of the fluidized bed type triboelectrification device has the following distinctive features: (i) transparent walls to observe the fluidization process and the particles moving in the triboelectrification module; (ii) air distributors with different mesh apertures correlated with granule size; (iii) quick replacement of the triboelectrification Plexiglas chamber with other metallic (aluminium, copper) or nonmetallic chambers (polyvinyl chloride—PVC, polyethylene—PE, and polyethylene terephthalate—PET); (iv) possibility of independent operation, for granule charge measurement or integrated operation, for the electrostatic separation experiments using a free-fall electrostatic separator. The results of charge measurement experiments pointed out the different triboelectric behaviour of two types of granules (polystyrene and low-density polyethylene) in contact with the walls of the device. The electrostatic separation experiments carried out on a binary mixture of mm-size polystyrene/polyethylene granules confirmed the effectiveness of the triboelectrification device. 相似文献
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Laur Calin Adrian Mihalcioiu Alexandru Iuga Lucian Dascalescu 《Particulate Science and Technology》2007,25(2):205-211
The study of the triboelectrification process is the key factor to the successful industrial application of electrostatic separation in the field of plastics recycling. Therefore, the aim of the present work is to evaluate an original device for the laboratory study of this process. The original design of the fluidized bed type triboelectrification device has the following distinctive features: (i) transparent walls to observe the fluidization process and the particles moving in the triboelectrification module; (ii) air distributors with different mesh apertures correlated with granule size; (iii) quick replacement of the triboelectrification Plexiglas chamber with other metallic (aluminium, copper) or nonmetallic chambers (polyvinyl chloride—PVC, polyethylene—PE, and polyethylene terephthalate—PET); (iv) possibility of independent operation, for granule charge measurement or integrated operation, for the electrostatic separation experiments using a free-fall electrostatic separator. The results of charge measurement experiments pointed out the different triboelectric behaviour of two types of granules (polystyrene and low-density polyethylene) in contact with the walls of the device. The electrostatic separation experiments carried out on a binary mixture of mm-size polystyrene/polyethylene granules confirmed the effectiveness of the triboelectrification device. 相似文献