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產(chǎn)品簡(jiǎn)介
《IC697CMM742》
產(chǎn)品價(jià)格:¥800.00元/個(gè)
上架日期:2025-04-21
發(fā)貨地:福建 廈門市
供應(yīng)數(shù)量:不限
最少起訂:1個(gè)
瀏覽量:176
詳細(xì)說(shuō)明
    詳細(xì)參數(shù)
    品牌GE型號(hào)IC697CMM742
    結(jié)構(gòu)形式模塊式安裝方式控制室安裝
    LD指令處理器硬PLCI/O點(diǎn)數(shù)IC697CMM742
    功能IC697CMM742工作電壓220
    輸出頻率220處理速度20
    程序容量10數(shù)據(jù)容量20
    產(chǎn)品認(rèn)證ccc環(huán)境溫度10
    環(huán)境濕度10加工定制
    重量1產(chǎn)地美國(guó)
    外形尺寸10

    IC697CMM742

    IC697CMM742

    IC697CMM742

    IC697CMM742

    控制系統(tǒng)協(xié)調(diào)蒸汽鍋爐與汽機(jī)能量需求之間的平衡,平衡的標(biāo)志為母管壓力控制在設(shè)計(jì)規(guī)定的范圍內(nèi)。對(duì)于并列運(yùn)行的單個(gè)蒸汽鍋爐,可設(shè)計(jì)為參與調(diào)控母管壓力和只帶基本負(fù)荷兩種模式。當(dāng)單個(gè)蒸汽鍋爐不參與母管壓力調(diào)節(jié)時(shí),被調(diào)量為汽包壓力

    《聯(lián)系人;歐先生》
    《座機(jī):0592-5709825》
    《傳真:0592-5917519》
    《24小時(shí)熱線:18030229053微信同步》
    《QQ  :2479261344》
    《QQ郵箱:2479261344@qq.com》
    ,通過(guò)調(diào)節(jié)高爐煤氣的進(jìn)氣閥來(lái)保證進(jìn)入鍋爐的燃料量。對(duì)于參與母管壓力調(diào)節(jié)的蒸汽鍋爐,被調(diào)量為母管壓力,通過(guò)母管壓力--汽包壓力微分+主汽流量串級(jí)調(diào)節(jié)的方式調(diào)節(jié)高爐煤氣的進(jìn)氣閥,在母管壓力調(diào)節(jié)器的輸出端加上負(fù)荷分配手操器,根據(jù)參與母管壓力調(diào)節(jié)的蒸汽鍋爐的數(shù)量修正負(fù)荷分配因子,從而改變對(duì)各個(gè)鍋爐的出力指令。
    母管制運(yùn)行的機(jī)組方案如下。



    負(fù)荷指令分配中心
    ──根據(jù)鍋爐的運(yùn)行狀態(tài),選擇由那幾臺(tái)鍋爐參與的負(fù)荷調(diào)節(jié);
    ──限制負(fù)荷指令的變化率;
    ──由母管壓力調(diào)節(jié)器輸出相應(yīng)的負(fù)荷指令;
    ──由負(fù)荷分配形成各臺(tái)鍋爐的控制指令;
    負(fù)荷分配系數(shù)的確定:
    根據(jù)的鍋爐和汽機(jī)物理位置和運(yùn)行情況,負(fù)荷分配系數(shù)的確定可分為幾種情況
    負(fù)荷分配系數(shù)確定的原則為:爐和機(jī)的距離最短,熱負(fù)荷的損失最小。根據(jù)機(jī)爐的蒸汽管道的距離和蒸汽的損失量計(jì)算出負(fù)荷分配系數(shù)。因此,在爐與機(jī)距離最短時(shí)系數(shù)為1,即離得最近的鍋爐蒸汽最大的供給最近的汽機(jī)。
    當(dāng)機(jī)組部分運(yùn)行時(shí),依然采用上述原則,判斷運(yùn)行機(jī)組的負(fù)荷分配系數(shù)。
    鍋爐控制系統(tǒng)(由兩種情況組成)
    ①當(dāng)鍋爐參與母管壓力調(diào)節(jié)時(shí),采用鍋爐發(fā)熱量(主汽流量+汽包壓力的微分)代表鍋爐的出力能力與負(fù)荷指令分配中心來(lái)的指令信號(hào)比較后進(jìn)入PI調(diào)節(jié)器,形成給氣指令。


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