摘要：【中文】一种铝合金蜂窝板钎焊用铝钎剂及其制备方法，由质量百分比为83.5～89.5%二元系钎剂基质和质量百分比为16.5～10.5%的活性物质制成，所述二元系钎剂基质为KBe₂F₅‑KAlF₄，活性物质为KHF₂或者KHF₂与SnF₂的混合。本发明钎剂不含贵金属盐CsF，成本较低，其熔点为435～450℃，钎焊温度为450～480℃，低于现有AlF₃‑CsF铝钎剂的熔点约30～50℃，可应用于铝合金蜂窝板的低温钎焊，而且活性温度与Zn‑Al钎料的熔化温度匹配程度高，实现了Zn98Al钎料在3003铝合金上的铺展，其铺展面积高于现有铝钎剂，改善了铝合金蜂窝板的钎焊性能。 【EN】An aluminum brazing flux for brazing an aluminum alloy honeycomb plate and a preparation method thereof are disclosed, wherein the aluminum brazing flux is prepared from 83.5-89.5 mass% of a binary system brazing flux matrix and 16.5-10.5 mass% of an active substance, and the binary system brazing flux matrix is KBe₂F₅‑KAlF₄The active substance is KHF₂Or KHF₂And SnF₂And (3) mixing. The brazing flux does not contain precious metal salt CsF, is low in cost, has a melting point of 435-450 ℃, a brazing temperature of 450-480 ℃, and is lower than that of the existing AlF₃The melting point of the-CsF aluminum soldering flux is about 30-50 ℃, the CsF aluminum soldering flux can be applied to low-temperature soldering of an aluminum alloy honeycomb plate, the matching degree of the active temperature and the melting temperature of the Zn-Al solder is high, the Zn98Al solder is spread on 3003 aluminum alloy, the spreading area of the Zn98Al solder is higher than that of the existing aluminum soldering flux, and the soldering performance of the aluminum alloy honeycomb plate is improved.

摘要：【中文】本发明提供一种变电站SF₆在线监测装置、方法及系统，包括：SF₆监测传感器，用于采集变电站SF₆在线监测数据；物联网模组，包括窄带物联网模组和加密芯片，所述加密芯片用于加密SF₆监测传感器采集的变电站SF₆在线监测数据，所述窄带物联网模组用于发送所述加密芯片加密后的变电站SF₆在线监测数据；云平台，用于接收加密后的变电站SF₆在线监测数据，对加密后的变电站SF₆在线监测数据进行解密，对解密后的变电站SF₆在线监测数据进行处理。本发明可实现对变电站SF₆在线监测数据的统一处理，减少了监测数据的传输环节，有利于降低监测网络结构的复杂程度，提升了运维效率，保障了系统的安全运行。 【EN】The invention provides a transformer substation SF₆The on-line monitoring device, method and system include: SF₆Monitoring sensor for collecting SF of transformer station₆Monitoring data on line; the Internet of things module comprises a narrow-band Internet of things module and an encryption chip, wherein the encryption chip is used for encrypting SF₆Substation SF acquired by monitoring sensor₆The narrow-band Internet of things module is used for sending the encrypted substation SF₆Monitoring data on line; a cloud platform for receiving the encrypted SF of the substation₆Monitoring data on line, and encrypting the SF of the transformer substation₆Decrypting the on-line monitoring data and decrypting the decrypted SF of the transformer substation₆And processing the online monitoring data. The invention can realize SF for the transformer substation₆The unified processing of the on-line monitoring data reduces the transmission link of the monitoring data, and is beneficial to reducing the complexity of the monitoring network structureThe operation and maintenance efficiency is improved and the safe operation of the system is guaranteed due to the impurity degree.