| 3HAWC116978 |
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價格： 元(人民幣) | 產地：本地 |
| 最少起訂量：1臺 | 發貨地：本地至全國 | |
| 上架時間：2022-06-27 10:13:49 | 瀏覽量：192 | |
廈門興銳嘉進出口有限公司
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| 經營模式：經銷商 | 公司類型：私營獨資企業 | |
| 所屬行業：PLC控制系統 | 主要客戶：全國 | |
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| 聯系人:劉錦玉 (小姐) | 手機:15359273791 |
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| 郵箱:3005393110@qq.com | 地址:廈門市思明區呂嶺路1733號創想中心20樓 |
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銷售產品：進口DCS、PLC控制系統備品備件和大型進口系統模塊備件公司 1.Allen-Bradley(美國AB)系列產品》 2.Schneider(施耐德電氣)系列產品》 3.General electric(通用電氣)系列產品》 4.Westinghouse（美國西屋）系列產品》 5.SIEMENS(西門子系列產品)》 6.銷售ABB Robots. FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic、Robots、MOTOMAN Robots。 7.estinghouse（西屋）： OVATION系統、WDPF系統、MAX1000系統備件。 8.Invensys Foxboro（？怂共_）：I/A Series系統，FBM（現場輸入/輸出模塊）順序控制、梯形邏輯控制、事故追憶處理、數模轉換、輸入/輸出信號處理、數據通信及處理等。Invensys Triconex: 冗余容錯控制系統、基于三重模件冗余（TMR）結構的zui現代化的容錯控制器。 9.Siemens(西門子)：Siemens MOORE， Siemens Simatic C1，Siemens數控系統等。 10.Bosch Rexroth（博世力士樂）：Indramat，I/O模塊,PLC控制器,驅動模塊等。 ◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。采購美國、德國、法國、意大利等歐盟工控產品、備品備件 very large, and the products with obvious price advantages (mainly refer to centrifugal blowers and general-purpose centrifugal and axial compressors), and high-tech industries and newly developed high-tech products (mainly refers to centrifugal compressors for ethylene plants with a capacity of more than 600000 tons, natural gas pipeline transmission compressors, high-pressure oil field gas injection compressors and compressors for large air separation units) , it is not competitive. In the former case, the impact will be small after the market is opened. However, the enterprises producing such products should have a sense of urgency, focus on improving the development and innovation ability, improve the technical content and grade of products, and narrow the gap with foreign countries. In the latter case, it will be greatly impacted after the market is opened. ② generally used Small and medium-sized ventilators in transit are the vast majority of products in the fan industry, belonging to large quantities and a wide range of products. It is equivalent to the situation mentioned above that the products have low cost and price advantage. After China&＃39;s accession to the WTO, it will be conducive to expanding exports, and the opening of the domestic market basically does not pose a threat. For example, the world&＃39;s more famous Fan enterprises are mainly German TLT company Among them, Shanghai Blower Factory Co Ltd. has introduced German TLT technology, Shenyang Blower Factory has introduced Danish novenko technology, Chengdu electric machinery factory and Shenyang Blower Factory have introduced German k.k.k technology, and British Haodeng company has established a wholly-owned enterprise in China Enterprises have already participated in the domestic fan market competition. From the price comparison of such products, taking the prices of Japanese manufacturers as an example, the prices of Japanese manufacturers&＃39; fans are now twice that of domestic fans. After China&＃39;s accession to the WTO, the tariffs have been reduced, but their prices are still 50% ~ 60% higher than those of domestic products. This shows that such products will not be competitive after China&＃39;s accession to the WTO It
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管網壓力檢測點；
250KW變頻器，泵房供水泵控制；
110KW軟啟動器，泵房供水泵控制；
100M工業以太網，廠內快速可靠通訊；
ProfiBus-DP工業現場總線，廠內控制設備連網；三、解決方案優勢
先進性：采用當前先進的網絡技術和控制設備；
經濟性：S7-400PLC/S7-300PLC/ET200智能I/O站、變頻器/軟啟動器 SIMOCODE、ProfiBus-DP/100M工業以太網的靈活設備選型及應用；
標準化、模塊化：
* SIEMENS PLC控制系統；
* SIEMENS SINUAT無線通訊系統
編程組態簡便、擴展性強、可靠性高
強大的保護功能：SIMOCODE、變頻器、軟啟動器、輸入/輸出電抗器、電器聯鎖、程序聯鎖等；
完整的數據采集： 生產過程數據、設備狀態信息等；
工業現場總線技術：提高整個系統的可靠性，減少布線施工費用，降低使用維護成本；
100M工業以太網：提高網絡通訊的快速性和可靠性大慶油田部分污水站反沖洗裝置處于手動狀態，存在不能定時反沖洗、反沖流量控制不、濾料還沒沖起就攪拌等一系列的問題，對生產造成不利的影響。本文將PLC技術應用于反沖洗控制，通過硬件系統改進，實現變頻控制自動反沖洗，提高系統反沖洗的質量，減輕工人勞動強度。主題詞：自控 污水站 反沖洗 1 引言 含油污水處理是關系到水質是否合格的關鍵步驟，而濾罐的反沖洗時間和效果則直接影響污水的過濾質量，所以定時反沖洗，按要求控制反沖洗的流量曲線是控制水質質量的核心。大慶油田部分污水站（聚杏Ⅱ-Ⅰ站）反沖洗裝置處于手動狀態，變頻器與電動閥不能配合，變頻器無法投用，反沖洗流量無法控制，出現沖走濾料等問題，影響反沖洗效果。整個反沖洗過程水泵始終處于滿負荷運轉，造成大量電能損失，而且每個罐都需單獨操作，操作工人勞動強度很大。這些都對生產造成不利的影響。因此對現有手動反沖洗裝置的自動化改造，不僅可減輕操作工人的勞動強度，更重要的是能提高系統反沖洗的質量，使設備達到佳的運行效果。2 工藝過程 污水深度處理正常過濾的過程是：由一段、二段脫出水經緩沖罐、升壓泵進入一次濾罐、二次濾罐后到注入站注入地下。濾罐內濾料經過一段時間后，會沉積一些污油，需要定期進行反沖洗，在實際生產中，手動控制反沖洗操作步驟如下：
1） 關閉待反沖洗罐過濾進、出口閥門，開啟反沖洗進、出口閥門；
2） 開啟反沖洗水泵，按階梯形提高水泵電機頻率直到達到50Hz；
3） 開啟反沖洗濾罐攪拌器，攪拌10分鐘后關閉攪拌器。
4） 上一臺反沖洗15分鐘后，關閉下一臺待反沖洗罐過濾進、出口閥門，開啟反沖洗進、出口閥門；
5） 重復以上步驟，直至全部過濾罐反沖洗完畢。3 系統組成 反沖洗自動控制系統的輸入信號主要有上位機操作臺和觸摸屏的控制輸入及閥位開關反饋信號。共有開關量（DI）120個輸入點。PLC系統的控制負載主要包括調節閥控制、攪拌器啟/停、變頻器控制負載。共有開關量（DO）270個輸出點，模擬量（AO）2個輸出點。The system has the advantages of energy saving, reliable operation and high degree of automation, which improves the quality of water supply. 1. With the rapid development of variable frequency speed regulation technology and programmable controller, as well as its wide application, powerful function and convenient use, it has become one of the main devices of modern industrial automation and is widely used in industrial production, applications in other areas, such as civil and Home automation, have also developed rapidly. Due to the flexible and convenient application of frequency conversion and programmable logic controller, it is also widely used in constant pressure water supply system. Using PLC as the central control unit, the working pressure of the water supply system can be quickly adjusted according to the system state by the combination of frequency converter and Pid, thus achieving the goal of constant pressure water supply and improving the working stability of the system, the good control effect and obvious energy-saving effect are obtained. 2. System Structure Frequency conversion constant pressure water supply system principle as figure 1, it mainly has PLC, frequency converter, pressure transmitter, liquid level sensor, power and control circuit and pump group composition. The user understands and controls the operation of the system by means of the indicator lights and buttons on the Control Panel and the transfer switch. Through the pressure transmitter installed on the outlet pipe network, the outlet pressure signal is changed into 4 ~ 20mA standard signal and sent to the PID regulator built in the frequency converter. By comparing the PID operation with the given pressure parameter, the 4 ~ 20mA parameter is obtained, 4 ~ 20mA signal is sent to frequency converter. The control system uses the frequency converter to control the pump speed in order to adjust the water supply. According to the different water consumption, the frequency of the frequency converter to adjust the pump speed is different, setting an upper limit frequency and a lower limit frequency detection in the frequency converter setting, when the water consumption is large, the frequency converter quickly rises to the upper limit frequency, at this time, the frequency converter outputs a switching signal to the PLC; When the frequency converter output reaches the lower limit frequency, the frequency converter also outputs a switching signal to the PLC; the two signals will not be produced simultaneously. When any signal is generated, the signal is fed back to the PLC, and the PLC can switch the AC contactor group by setting an internal program to drive the i/o switch output, so as to coordinate the number of pump motors put into operation, and the completion of the motor start-stop, frequency and power-frequency switching. By adjusting the number of motors put into operation and controlling the frequency conversion speed of one motor in the set, the working pressure of the system pipe network is always stable, and then the aim of constant pressure water supply is achieved. Working principle the system has two modes of operation: Manual and automatic. Manual Mode, press the button to start and stop the pump, according to the need to control the start and stop of 1 # ~ 3 # pump, this mode is mainly used for equipment
優勢型號如下:
5SHY3545L0009 HESG440295R2 HESG448688R2207BR61R1 GJV3074376R1 UAD149A0011 PFTL101B 2.0KN PPC905AE101 HESG440295R2 HESG448688R22 07BR61R1 GJV3074376R1 UAD149A0011 PFTL101B 2.0KN PPC905AE101 HESG440295R2 HESG448688R22 07BR61R1 GJV3074376R1 UAD149A0011 PFTL101B 2.0KN PPC905AE101 HESG440295R2 HESG448688R22 07BR61R1 GJV3074376R1 UAD149A0011 PFTL101B 2.0KN PPC905AE101 HESG440295R2 HESG448688R22 07BR61R1 GJV3074376R1 UAD149A0011 PFTL101B 2.0KN PPC905AE101 HESG440295R2 HESG448688R22 07BR61R1 GJV3074376R1 UAD149A0011 PFTL101B 2.0KN PPC905AE101
IMMPI01
INICT13A
A06B-6200
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