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YASKAWA SGDH-02AE可編程模塊現(xiàn)貨

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主營(yíng)DCS控制系統(tǒng)備件,PLC系統(tǒng)備件及機(jī)器人系統(tǒng)備件,
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YASKAWA SGDH-02AE可編程模塊現(xiàn)貨 YASKAWA SGDH-02AE可編程模塊現(xiàn)貨 YASKAWA SGDH-02AE可編程模塊現(xiàn)貨 YASKAWA SGDH-02AE可編程模塊現(xiàn)貨
全廠設(shè)備順序控制與監(jiān)測(cè)
選煤廠集控系統(tǒng)根據(jù)選煤廠生產(chǎn)設(shè)備聯(lián)系圖和工藝流程圖,對(duì)主要工藝設(shè)備的順序起/停進(jìn)行程序控制和運(yùn)行狀態(tài)監(jiān)測(cè)。根據(jù)流程選擇實(shí)現(xiàn)設(shè)備閉鎖。
原煤與產(chǎn)品煤的計(jì)量
對(duì)入廠毛煤、入廠原煤和產(chǎn)品煤進(jìn)行計(jì)量,在選煤廠內(nèi)設(shè)置多臺(tái)電子皮帶稱(chēng)。根據(jù)電子皮帶稱(chēng)實(shí)時(shí)數(shù)據(jù),可以統(tǒng)計(jì)出日?qǐng)?bào)和班作業(yè)報(bào)表,可以計(jì)算出原煤矸石含量,精煤產(chǎn)率和煤泥產(chǎn)量等。
設(shè)備故障診斷與報(bào)警
為保護(hù)設(shè)備,減少故障發(fā)生率,減少設(shè)備損壞事故,在主要設(shè)備設(shè)置故障檢測(cè)和報(bào)警裝置。
(1) 皮帶機(jī)跑偏故障報(bào)警,在皮帶機(jī)上設(shè)置跑偏檢測(cè)傳感器,當(dāng)皮帶跑偏到預(yù)定的設(shè)定值,在計(jì)算機(jī)屏幕和現(xiàn)場(chǎng)給出報(bào)警。計(jì)算機(jī)屏幕給出跑偏位置。
(2) 電機(jī)過(guò)流報(bào)警,在大型電氣設(shè)備設(shè)置電機(jī)過(guò)流檢測(cè)傳感器,檢測(cè)斷相和因過(guò)載、堵轉(zhuǎn)、軸承磨損、過(guò)壓等造成的過(guò)流。在計(jì)算機(jī)屏幕和現(xiàn)場(chǎng)給出報(bào)警信息。
(3) 軸溫報(bào)警,在大型風(fēng)機(jī)或電機(jī)設(shè)置軸溫報(bào)警傳感器,當(dāng)軸溫超過(guò)一定的溫度時(shí),在現(xiàn)場(chǎng)和計(jì)算機(jī)屏幕上報(bào)警。
報(bào)警時(shí)間和類(lèi)型能夠存儲(chǔ)在監(jiān)控計(jì)算機(jī)數(shù)據(jù)庫(kù)內(nèi),供查詢(xún)和統(tǒng)計(jì)。
倉(cāng)位測(cè)量和管理
選煤廠集控系統(tǒng)提供對(duì)主要煤倉(cāng)和矸石倉(cāng)倉(cāng)位的動(dòng)態(tài)實(shí)時(shí)檢測(cè),便于生產(chǎn)調(diào)度人員指揮生產(chǎn),保證生產(chǎn)連續(xù)進(jìn)行。
自動(dòng)配倉(cāng)與倉(cāng)位管理通過(guò)對(duì)煤倉(cāng)進(jìn)行實(shí)時(shí)的測(cè)量,選煤廠集控系統(tǒng)可根據(jù)倉(cāng)位實(shí)時(shí)檢測(cè)實(shí)現(xiàn)自動(dòng)配倉(cāng),做到不空倉(cāng)、不頂倉(cāng),使生產(chǎn)正常進(jìn)行。生產(chǎn)指揮和調(diào)度人員可以隨時(shí)掌握倉(cāng)位情況,便于調(diào)度和指揮生產(chǎn)。倉(cāng)位的歷史數(shù)據(jù)能夠以歷史數(shù)據(jù)或歷史曲線的形式供查詢(xún)和打印。
液位測(cè)量
對(duì)清水箱,循環(huán)水箱,集中水池,外排水池等進(jìn)行液位測(cè)量。保證水箱的液位,滿(mǎn)足生產(chǎn)需要。設(shè)置高、低限報(bào)警,確保水箱不溢,不空。
液位儀表應(yīng)有就地指示,同時(shí)能夠?qū)崿F(xiàn)數(shù)據(jù)位遠(yuǎn)傳功能。在調(diào)度室計(jì)算機(jī)監(jiān)視屏幕上能夠?qū)崟r(shí)顯示液位變化的數(shù)據(jù)和動(dòng)態(tài)圖形。液位歷史數(shù)據(jù)能夠以歷史數(shù)據(jù)或歷史曲線的形式供查詢(xún)和打印。
灰份測(cè)量與跳汰生產(chǎn)過(guò)程控制
跳汰洗煤工藝自動(dòng)控制可以有效地穩(wěn)定精煤灰份,提高精煤產(chǎn)率,具有重大的經(jīng)濟(jì)效率??v所周知,跳汰工藝是多變量相互影響的復(fù)雜過(guò)程,至今尚無(wú)有效的解決方案。然而其他條件一定時(shí),通過(guò)調(diào)節(jié)排矸和中煤來(lái)實(shí)現(xiàn)一段和二段床層厚度的閉環(huán)控制,是一種行之有效的解決方法。此方法需要浮標(biāo)位移傳感器分別測(cè)量一、二段床層厚度,利用入洗原煤成分、風(fēng)水制度等條件與標(biāo)定的實(shí)驗(yàn)條件相同時(shí),設(shè)定要求的精煤灰份所對(duì)應(yīng)的床層厚度,并對(duì)其進(jìn)行閉環(huán)控制。在執(zhí)行閉環(huán)控制程序過(guò)程中,通過(guò)調(diào)節(jié)排矸(和中煤)的數(shù)量,來(lái)維持床層厚度為設(shè)定值;而當(dāng)原煤煤質(zhì)、給煤量、風(fēng)水等有變化時(shí),跳汰司機(jī)可根據(jù)經(jīng)驗(yàn)或由標(biāo)定曲線來(lái)改變?cè)O(shè)定值的大小。
濃縮加藥自動(dòng)控制系統(tǒng)
選煤廠采用成套的自動(dòng)加藥系統(tǒng)實(shí)現(xiàn)煤泥水濃縮系統(tǒng)自動(dòng)加藥。加藥系統(tǒng)的檢測(cè)儀表同時(shí)進(jìn)入選煤廠集控系統(tǒng),實(shí)現(xiàn)濃縮系統(tǒng)工藝參數(shù)的實(shí)時(shí)檢測(cè)和統(tǒng)計(jì)、管理。that is, before and after 1978 as the dividing line. The main characteristics of these two stages can be summarized as follows:
1. The closure of China before 1978 made machinery manufacturers know little about the level of the same industry in the world. At that time, when the technology of single board computer and PLC developed in two tracks, China's national industry almost ignored the development of PLC and emphasized the scattered application of single board computer. The impact on China's machinery manufacturing industry at that time was obvious. In terms of automation level, analog electronic circuit and relay control are the dominant factors in mechanical automation. However, computer control based on single board computer is still rare.
2. After 1978
China's opening up has naturally brought vitality to the national machinery manufacturing industry. Looking at the outside world, the Chinese people are acutely aware of the gap between China's machinery manufacturing industry and Europe and the United States. Therefore, the first problem faced by the machinery manufacturing industry is the change and renewal of concepts. The development of machinery manufacturing automation can be summarized by the following characteristics:
(L) the computer control idea represented by single board computer has become the mainstream of high-grade automation in the early stage of China's opening up. During this period, the cooperation between factories and colleges played a positive role.