电力物联网技术标准体系研究

为指导国家电网有限公司电力物联网标准化工作,文章依据国家标准《企业标准体系表编制指南》(GB/T13017),充分梳理电力物联网标准化需求,采用综合标准化法,研究建立了电力物联网技术标准体系框架及重点标准化领域,梳理了已发布、编制中及亟需制定的各类型标准,形成统一、综合、开放的电力物联网技术标准体系。     

引进柴油机产品的标准化

企业标准的主体是技术标准，而产品标准则是整个企业标准的中。动环节．镇江船用柴油机厂是接引进技术生产产品的，因此，产品标准化也就经历了从消化吸收国外产品图纸、技术标准规范，进而结合我国实际情况，编制符合标准规范要求的产品标准，以及为保证产品标准的实施而编制和完善配套技术标准这样一个过程。下面从几个方面谈一谈引进柴油机的标准化过程．1引进过程的标准化我厂在198D年引进B＆W公司技术时，除引进全套图纸外，对该公司的一系列技术标准、规范、手册等尽可能搜集齐全，并加以翻译、分析，结合我国标准体系，编制了若干…     

浅谈企业标准体系表的编制与应用

本文围绕企业标准体系系表,阐明了编制企业标准体系表的重要性、必要性和目的性;编制企业标准体系表的条件、原则、组成,以及应用时理解掌握企业标准体系表的特征。本文简单介绍莱阳市柴油机厂的企业标准体系表。说明了企业标准体系表是系统工程,是企业标准化的基础工作,对促进企业技术进步,改进产品质量,提高经济效益具有十分重要的作用。 企业标准化工作是企业管理的一项重要基础工作。国务院86年71号文《关于加强企业管理的若干问题的规定》中明确提出,大中型企业逐步建立以技术标准为主,管理标准、工作标准为辅的标准体系。而这个标准体系便可以标准体系表的形式表现出来。     

谈企业技术标准体系表的编制

随着市场经济的深入发展,企业标准化工作愈来愈显得重要,而健全企业标准体系是搞好企业标准化的基础。GB/T15496规定“健全企业标准体系应首先研究和编制企业标准体系表”,所谓标准体系表就是“企业标准体系内的标准按一定形式排列起来的图表”。下面就编写企业技术标准体系表谈几点看法: 1 编写标准体系表首先要明确编写标准体系表的意义和作用 编制标准体系表的意义就在于它是促使企业标准组成达到科学、完整、有序的基础,是包括现有标准和发展标准的全局蓝图,是促进企业产品开发、优化生产经营管理、加速技术进步和提高经济效益的标准化指导性文件。     

能源标准体系

<正> 一、建立能源标准体系的意义我国在“六五”节能规划设想中指出:“要把能源立法和标准化密切结合起来。‘六五,期间,在能源资源开发与生产、省能材料、能源技术装备、新能源技术、能源基础与管理五个方面,形成初步完整的标准体系。”建立能源标准体系是能源科学管理的重要组成部分,是现代化经济建设的需要。当前,探讨、研究能源标准体系,是能源管理与标准化     

锅炉行业建立贸易型标准体系的探讨与建议

介绍了ＷＴＯ与标准化的关系，提出了锅炉行业建立贸易型锅炉标准体系的意见和工作建议。     

工业和通信业节能与综合利用领域技术标准体系建设方案

正工信厅节[2014]149号为加快推进工业节能减排标准化工作,提升标准对促进工业绿色低碳发展的整体支撑作用,我部组织制定了《工业和通信业节能与综合利用领域技术标准体系建设方案》(以下简称《方案》)。现印发你们,请认真贯彻执行。有关事项通知如下:一、充分认识标准化工作对推进工业和通讯业节能减排,促进工业转型升级的重要性和现实意义,请依据《方案》做好本地     

我国已发布电动汽车标准75项标准体系基本建立

标准体系建设直接关系电动汽车产业的健康可持续发展。工业和信息化部高度重视电动汽车标准化工作，积极会同国家标准委等相关部委，组织汽车、电力、电工等相关行业企业不断推进电动汽车标准体系建设。在各行业的共同努力下，目前我国已发布电动汽车标准75项，涵盖电动汽车基础通用、整车、关键总成（含电池、电机、电控）、电动附件、基础设施、接口与界面等各领域。我国电动汽车标准体系已基本建立，可以基本满足我国现阶段电动汽车推广应用发展的需要。     

电网企业技术标准体系维护应用研究

技术标准体系维护工作确保了体系架构与信息化管理的完善,保证整个技术标准体系的实时有效性,夯实技术标准体系成为企业生产经营活动高效运转的基础。针对当前电网企业技术标准体系标龄老化、体系失衡等问题,研究技术标准体系维护的方法,并详细阐述电网企业技术标准体系应如何维护,为其它企业提供借鉴。     

提升我国大功率船用柴油机标准化技术水平的思路与途径

就提升我国大功率船用柴油机标准化技术水平进行了分析,并提出了以下提升我国大功率船用柴油机标准化技术水平的途径:高度重视专利引进机标准技术的先进性;加强与专利公司的技术合作和交流;强化技术标准的储备;做好国内标准修制订工作;扎实推进"产、学、研"合作等.以期共同推动我国船用大功率船用柴油机标准化技术的发展.     

Feasibility of preparing additive manufactured porous stainless steel felts with mathematical micro pore structure as novel catalyst support for hydrogen production via methanol steam reforming

In this paper, an additive manufacturing prepared porous stainless steel felt (AM-PSSF) is proposed as a novel catalyst support for hydrogen production via methanol steam reforming (MSR). In the method, 316 L stainless steel powder with diameter of 15–63 μm is processed by the additive manufacturing technology of selective laser melting (SLM). To accomplish the preparation, the reforming chamber where the AM-PSSF is embedded is firstly divided into an all-hexahedron mesh. Then, the triply periodic minimal surface (TPMS) unit with mathematical form, high interconnectivity and large specific surface area is mapped into the hexahedrons based on shape function, forming the fully connected three-dimensional (3D) micro pore structure of the AM-PSSF. By correlating the mathematical parameter and the porosity of the TPMS unit, and taking into account the SLM process, the porosity of the AM-PSSF is well controlled. Based on the designed 3D pore structure model, the AM-PSSF is produced using standard SLM process. The application of the AM-PSSF as catalyst support for hydrogen production through MSR indicates that: 1) both the naked and catalyst-coated AM-PSSF have the characteristics of high porosity, large specific surface area and high connectivity; 2) the MSR hydrogen production performance of the AM-PSSF is better than that of the commercial stainless steel fiber sintered felt. The feasibility of AM-PSSF as catalyst support for MSR hydrogen production may pave a better way to balance different requirements for catalyst support, thanks to the excellent controllability provided by AM on both the external shape and the internal pore structure, and to the produced rough surface morphology that benefits the catalyst adhesion strength. In addition, catalyst support with pore structures that are more accommodated with the flow field and the reaction rate of MSR reaction may be prepared in future, since the entire catalyst support structure, from macro scale to micro scale, is under control.     

哈尔滨600 MW锅炉可靠性技术研究

本文全面阐述哈尔滨锅炉厂有限责任公司(以下简称哈锅公司)在600MW锅炉的设计开发、制造工艺、技术标准、质量控制、材料研究与应用以及锅筒疲劳寿命监测系统的应用等方面所进行的可靠性技术研究工作和取得的效果。     

Development of highly efficient methanol steam reforming system for hydrogen production and supply for a low temperature proton exchange membrane fuel cell

Methanol steam reforming (MSR) has been regarded as a promising hydrogen supply method for proton exchange membrane fuel cell (PEMFC), while the efficiency for hydrogen production and integration method of MSR with PEMFC are two major challenges for commercial applications. Here, we present a highly efficient MSR system for hydrogen production and supply for low temperature PEMFC (LT-PEMFC). The MSR system has a highly compact microreactor, wherein MSR, methanol combustion, and CO selective methanation reactions occur. The CO selective methanation is used to reduce the content of CO concentration to remit the CO poison, then the reformate of MSR system is mixed with air and supply for the LT-PEMFC. Then, experimental tests are conducted to investigate the effects of operating parameters on hydrogen production. A staged supply strategy is proposed, it enables to startup the system within 11.2 min and with methanol consumption of 34.72 g. Results show that the methanol conversion can reach up to 93.0% and system's energy efficiency of 76.2%. After integration with a LT-PEMFC, a maximum 160 W electricity can be generated. The results obtained in this study demonstrated that the developed MSR system can be used to supply hydrogen for LT-PEMFC and able to power mobile device requiring hundreds of watts power consumption.     

Microfibrous structured catalytic packings for miniature methanol fuel processor: Methanol steam reforming and CO preferential oxidation

The microfibrous structured catalytic packings for miniature fuel processor consisting of a methanol steam reformer and a subsequent CO cleanup train has been investigated experimentally. A highly void and tailorable sinter-locked microfibrous carrier consisting of 3.5 vol% 8 μm diameter Ni-fibers is used to entrap 35 vol% 150-250 μm catalyst particulates for both methanol steam reforming (MSR) and CO preferential oxidation (PROX). We demonstrate a microfibrous entrapped Pd-ZnO/Al₂O₃ catalyst packings for high efficiency hydrogen production by the MSR reaction. The use of microfibrous entrapment technology significantly enhances the catalyst utilization efficiency by a 4-fold improvement of the weight hourly space velocity (WHSV), compared to the single Pd-ZnO/Al₂O₃ particulates as keeping the methanol conversion at >98%. The microfibrous entrapped Pt-Co/Al₂O₃ catalyst packings can drive the CO from 2% down to <50 ppm at 150 °C with O₂/CO ratio of 1 using a gas hourly space velocity (GHSV) of 32,000 h⁻¹. Finally, a prototype fuel processor system integrating MSR reformer and CO PROX train is demonstrated as three reactors in series. Such test rig is capable of producing roughly 1700 standard cubic centimeter per minute (sccm) PEMFC-grade H₂ (equivalent to ∼163 W of electric power) in a longer-term test, in which the MSR reactor is operated at 300 °C using a methanol/water (1/1.1, mole) mixture WHSV of 9 h⁻¹ and CO PROX reactors at 150 °C using an O₂/CO molar ratio of 1.3, respectively. In the test of this prototype system, MSR reactor delivers >97% methanol conversion throughout the entire 1200-h test; the CO cleanup train placed in line after 800-h MSR illustrates the capability to decrease the CO concentration from ∼3.5% to ∼1% at PROX-1 and then to less than 20 ppm at PROX-2 until to the end of test.     

火电机组真空系统严重泄漏诊断及系统改造

大唐鸡西热电有限责任公司有2台超高压调整抽汽供热机组。机组在试运阶段真空系统严重泄漏,严重影响机组安全性、经济性。公司依靠自身技术力量,分析多种影响真空的因素,找到了真空系统泄漏的关键原因,是机组轴封冷却器疏水至凝汽器热水井的多级水封本身存在严重缺陷,从而使空气经疏水管进入凝汽器,造成机组真空降低。经过系统改造,凝汽器真空大幅度提高,机组真空严密性达到优良标准。     

岭澳MSR国产化制造中的质量管理

汽水分离再热器 (MSR)是核电站常规岛中较复杂的设备 ,它的技术含量高、制造难度大 ,一般均在国外制造。岭澳MSR是我国核电站中此类产品首次在国内制造的产品 ,它的产成标志着压水堆核电站常规岛的国产化水平有了较大幅度的提高。本文介绍了MSR在国产化制造中整个项目的质量管理模式、方法及一些成败的经验 ,供有关人员参考、借鉴     

170t RH炉真空系统泄漏量的测试

介绍了安钢新建170t RH炉真空系统安装采取的措施,探讨了泄漏量的测试和计算方法。生产实践证明,采取的安装措施得当,泄漏量的测试和计算方法正确,新建的RH炉真空系统泄漏量达到了设计标准,满足了生产工艺的要求。     

Numerical predictions on thermal characteristic and performance of methanol steam reforming with microwave-assisted heating

Microwave irradiation is an effective route to trigger methanol steam reforming (MSR) for hydrogen production because of the double absorption of microwaves by both the reagents and the catalyst. To recognize the thermal characteristic and performance of MSR in an environment with microwave irradiation, a numerical method is employed to predict the coupling phenomena of electromagnetic field, flow field and chemical reactions. Methanol decomposition (MD) is also regarded while MSR proceeds. Two sets of complex relative permittivity are established to account for the transmission of electromagnetic waves to heat reactants in the non-porous zone and the porous zone. Moreover, the effects of heat loss, microwave power and reagent flow rate on MSR are taken into account. The predictions suggest that heat loss is an important factor when the appropriate models with microwave-assisted heating are developed. A higher power is conducive to the performance of MSR, resulting from more heat generated in the reaction tube. At a given microwave power, heat generation due to microwave irradiation is independent of Reynolds number. As a result, increasing Reynolds number lessens methanol conversion and H₂ yield, as a consequence of more reagents passing through the catalyst bed. However, it is of interest that there exists an optimal Reynolds number for MSR to consume heat stemming from microwave irradiation.     

Impact of Ni-based catalyst patterning on hydrogen production from MSR: External steam reformer modelling

Wall-coated Methane Steam Reformers (MSR) are commonly used as fuel processing in the hydrogen production chain. In such devices, the catalyst which is generally nickel-based is coated on the walls, and the heat supply influences directly the fuel processing efficiency. In this work, two-dimensional CFD study is carried out to explore an enhancement on MSR thermal behavior. Two configurations in terms of catalyst coating are investigated. The first MSR configuration is equipped with continuous catalytic layer, while in the second, discrete catalyst layers separated by an inert gap are imposed. The effect of the catalyst patterning on the thermal and mass behavior of MSR is discussed. The results show that the MSR efficiency can be improved by extending the catalytic zone and discretizing the catalyst coating. Comparing to conventional MSR with continuous catalytic layers, enhancement of 28.71% in CH₄ conversion and 88.574% in H₂ production is realized by using discretized catalytic layers.     

浅谈创建“标准化良好行为企业”

按照"企业标准体系"系列国家标准要求建立的符合企业实际情况的"企业标准体系",通过在企业运行过程中的正确实施,能够使企业的标准化管理水平得到明显的提升。笔者通过参与对"标准化良好行为企业"的验收工作,总结归纳了企业在创建"标准化良好行为企业"过程中容易忽视的一些问题,为其他企业今后在建立企业标准体系中提供一些借鉴。