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实用新型
CN202255590U 皮带秤低流量停机控制系统 失效 - 权利终止

皮带秤低流量停机控制系统
摘要：
本实用新型公开一种皮带秤低流量停机控制系统，包括皮带秤，皮带秤与继电器相连，继电器与DCS分布式控制系统，DCS分布控制系统与工控机和变频器相连，变频器与皮带秤相连。本实用新型通过皮带秤累计计算煤种的量，一旦配煤实际量低于设定量的30%，就通过继电器发出一个低流量信号给DCS分布控制系统，DCS收到信号后开始计时，如果低流量信号时间持续超过7秒钟，DCS就发出指令给变频器，通过变频器控制皮带秤停止供煤。与现有技术相比，本实用新型提高了配煤精度，杜绝了配煤缺少煤种而造成的产品质量问题，提高了煤的综合利用率。
摘要（英）：

The utility model discloses a low-flow shutdown control system for a belt weigher, which comprises a belt weigher, wherein the belt weigher is connected with a relay; the relay is connected with a DCS (distributed control system), the DCS is connected with an industrial personal computer and a frequency converter; and the frequency converter is connected with the belt weigher. According to the utility model, the belt weigher is utilized to accumulatively calculate the quantity of the coal; once the actual quantity of the blended coal is lower than the set quantity by 30%, the relay transmits a low-flow signal to the DCS; after receiving the signal, the DCS starts timing; and if the low-flow signal duration time exceeds 7 seconds, the DCS transmits a command to the frequency converter, and the frequency converter controls the belt weigher to stop feeding the coal. Compared with the prior art, the utility model enhances the coal blending precision, avoids the problem of poor product quality due to lack of coal types in the coal blending process, and enhances the comprehensive utilization ratio of coal.

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