The invention relates to a switchable pulverized coal preheater, and belongs to the technical field of pulverized coal preheaters. Comprising a pulverized coal header pipe, a separator, a middle cylinder, a liftable center cylinder, an exhaust gas pipe, a thick powder pipe and a hot air pipe, the pulverized coal header pipe is connected with an inlet in the lower end of the separator, a plurality of separation blades are rotationally connected into the separator, and the middle cylinder comprises an inlet section, an exhaust gas outlet section and a thick powder outlet section; the liftable center cylinder comprises a fixed outer cylinder and a liftable lifting inner cylinder, the exhaust gas outlet section is connected with an opening in the lower end of the fixed outer cylinder, an opening in the upper end of the fixed outer cylinder is connected with the exhaust gas pipe, the concentrated powder outlet section is connected with the concentrated powder pipe, and the concentrated powder pipe is communicated with the hot air pipe; the separation driving assembly drives all the separation blades to rotate synchronously, the lifting driving assembly drives the lifting inner cylinder to ascend and descend, and the driving motor drives the separation driving assembly and the lifting driving assembly to act synchronously. The problem that an existing coal power unit is poor in combustion stability under the peak regulation working condition is solved.

    本发明涉及一种可切换式煤粉预热器,属于煤粉预热器技术领域;包括煤粉总管、分离器、中间筒、可升降中心筒、乏气管、浓粉管、热风管,煤粉总管与分离器的下端入口相连接,分离器内部转动连接有多个分离叶片,中间筒包括入口段、乏气出口段、浓粉出口段,入口段与分离器上端出口相连接,可升降中心筒包括固定外筒以及可升降的升降内筒,乏气出口段与固定外筒下端开口相连接,固定外筒上端开口与乏气管相连接,浓粉出口段与浓粉管相连接,浓粉管与热风管相连通;分离驱动组件带动所有分离叶片同步转动,升降驱动组件带动升降内筒升降,驱动电机带动分离驱动组件以及升降驱动组件同步动作;解决了目前煤电机组调峰工况下燃烧稳定性较差的问题。


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    Titel :

    Switchable pulverized coal preheater


    Weitere Titelangaben:

    一种可切换式煤粉预热器


    Beteiligte:
    LIANG WUZHOU (Autor:in) / LIU DELAI (Autor:in) / LIU ZHONGYUAN (Autor:in) / LIU ZHIBING (Autor:in) / YANG LIWEI (Autor:in) / HUO HUIYING (Autor:in) / LI HUIYONG (Autor:in)

    Erscheinungsdatum :

    2023-12-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    F23K Brennstoffzufuhr zu Feuerungen , FEEDING FUEL TO COMBUSTION APPARATUS / B07B Trennen fester Stoffe von festen Stoffen durch Sieben, Klassieren oder Sichten oder durch Verwendung von Gasströmungen , SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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