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| 上架時(shí)間：2022-06-27 10:57:14 | 瀏覽量：447 | |
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銷售產(chǎn)品：進(jìn)口DCS、PLC控制系統(tǒng)備品備件和大型進(jìn)口系統(tǒng)模塊備件公司 1.Allen-Bradley(美國(guó)AB)系列產(chǎn)品》 2.Schneider(施耐德電氣)系列產(chǎn)品》 3.General electric(通用電氣)系列產(chǎn)品》 4.Westinghouse（美國(guó)西屋）系列產(chǎn)品》 5.SIEMENS(西門子系列產(chǎn)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(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。 8.Invensys Foxboro（福克斯波羅）：I/A Series系統(tǒng)，F(xiàn)BM（現(xiàn)場(chǎng)輸入/輸出模塊）順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)據(jù)通信及處理等。Invensys Triconex: 冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余（TMR）結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。 9.Siemens(西門子)：Siemens MOORE， Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。 10.Bosch Rexroth（博世力士樂(lè)）：Indramat，I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。 ◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。采購(gòu)美國(guó)、德國(guó)、法國(guó)、意大利等歐盟工控產(chǎn)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(wǎng)壓力檢測(cè)點(diǎn)；
250KW變頻器，泵房供水泵控制；
110KW軟啟動(dòng)器，泵房供水泵控制；
100M工業(yè)以太網(wǎng)，廠內(nèi)快速可靠通訊；
ProfiBus-DP工業(yè)現(xiàn)場(chǎng)總線，廠內(nèi)控制設(shè)備連網(wǎng)；三、解決方案優(yōu)勢(shì)
先進(jìn)性：采用當(dāng)前先進(jìn)的網(wǎng)絡(luò)技術(shù)和控制設(shè)備；
經(jīng)濟(jì)性：S7-400PLC/S7-300PLC/ET200智能I/O站、變頻器/軟啟動(dòng)器 SIMOCODE、ProfiBus-DP/100M工業(yè)以太網(wǎng)的靈活設(shè)備選型及應(yīng)用；
標(biāo)準(zhǔn)化、模塊化：
* SIEMENS PLC控制系統(tǒng)；
* SIEMENS SINUAT無(wú)線通訊系統(tǒng)
編程組態(tài)簡(jiǎn)便、擴(kuò)展性強(qiáng)、可靠性高
強(qiáng)大的保護(hù)功能：SIMOCODE、變頻器、軟啟動(dòng)器、輸入/輸出電抗器、電器聯(lián)鎖、程序聯(lián)鎖等；
完整的數(shù)據(jù)采集： 生產(chǎn)過(guò)程數(shù)據(jù)、設(shè)備狀態(tài)信息等；
工業(yè)現(xiàn)場(chǎng)總線技術(shù)：提高整個(gè)系統(tǒng)的可靠性，減少布線施工費(fèi)用，降低使用維護(hù)成本；
100M工業(yè)以太網(wǎng)：提高網(wǎng)絡(luò)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(dòng)狀態(tài)，存在不能定時(shí)反沖洗、反沖流量控制不、濾料還沒(méi)沖起就攪拌等一系列的問(wèn)題，對(duì)生產(chǎn)造成不利的影響。本文將PLC技術(shù)應(yīng)用于反沖洗控制，通過(guò)硬件系統(tǒng)改進(jìn)，實(shí)現(xiàn)變頻控制自動(dòng)反沖洗，提高系統(tǒng)反沖洗的質(zhì)量，減輕工人勞動(dòng)強(qiáng)度。主題詞：自控 污水站 反沖洗 1 引言 含油污水處理是關(guān)系到水質(zhì)是否合格的關(guān)鍵步驟，而濾罐的反沖洗時(shí)間和效果則直接影響污水的過(guò)濾質(zhì)量，所以定時(shí)反沖洗，按要求控制反沖洗的流量曲線是控制水質(zhì)質(zhì)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(dòng)狀態(tài)，變頻器與電動(dòng)閥不能配合，變頻器無(wú)法投用，反沖洗流量無(wú)法控制，出現(xiàn)沖走濾料等問(wèn)題，影響反沖洗效果。整個(gè)反沖洗過(guò)程水泵始終處于滿負(fù)荷運(yùn)轉(zhuǎn)，造成大量電能損失，而且每個(gè)罐都需單獨(dú)操作，操作工人勞動(dòng)強(qiáng)度很大。這些都對(duì)生產(chǎn)造成不利的影響。因此對(duì)現(xiàn)有手動(dòng)反沖洗裝置的自動(dòng)化改造，不僅可減輕操作工人的勞動(dòng)強(qiáng)度，更重要的是能提高系統(tǒng)反沖洗的質(zhì)量，使設(shè)備達(dá)到佳的運(yùn)行效果。2 工藝過(guò)程 污水深度處理正常過(guò)濾的過(guò)程是：由一段、二段脫出水經(jīng)緩沖罐、升壓泵進(jìn)入一次濾罐、二次濾罐后到注入站注入地下。濾罐內(nèi)濾料經(jīng)過(guò)一段時(shí)間后，會(huì)沉積一些污油，需要定期進(jìn)行反沖洗，在實(shí)際生產(chǎn)中，手動(dòng)控制反沖洗操作步驟如下：
1） 關(guān)閉待反沖洗罐過(guò)濾進(jìn)、出口閥門，開(kāi)啟反沖洗進(jìn)、出口閥門；
2） 開(kāi)啟反沖洗水泵，按階梯形提高水泵電機(jī)頻率直到達(dá)到50Hz；
3） 開(kāi)啟反沖洗濾罐攪拌器，攪拌10分鐘后關(guān)閉攪拌器。
4） 上一臺(tái)反沖洗15分鐘后，關(guān)閉下一臺(tái)待反沖洗罐過(guò)濾進(jìn)、出口閥門，開(kāi)啟反沖洗進(jìn)、出口閥門；
5） 重復(fù)以上步驟，直至全部過(guò)濾罐反沖洗完畢。3 系統(tǒng)組成 反沖洗自動(dòng)控制系統(tǒng)的輸入信號(hào)主要有上位機(jī)操作臺(tái)和觸摸屏的控制輸入及閥位開(kāi)關(guān)反饋信號(hào)。共有開(kāi)關(guān)量（DI）120個(gè)輸入點(diǎn)。PLC系統(tǒng)的控制負(fù)載主要包括調(diào)節(jié)閥控制、攪拌器啟/停、變頻器控制負(fù)載。共有開(kāi)關(guān)量（DO）270個(gè)輸出點(diǎn)，模擬量（AO）2個(gè)輸出點(diǎn)。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(yōu)勢(shì)型號(hào)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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