【摘要】：單螺桿泵屬回轉(zhuǎn)式容積泵,結(jié)構(gòu)簡(jiǎn)單緊湊,自吸能力強(qiáng),適用介質(zhì)范圍廣,廣泛應(yīng)用于石油、化工、食品、污水處理等行業(yè)。但目前多數(shù)工藝流程中使用的單螺桿泵,機(jī)電一體化程度極低、產(chǎn)品運(yùn)行參數(shù)與實(shí)際工藝要求不匹配、流量的調(diào)節(jié)和計(jì)量不準(zhǔn)確、能源利用率很低；同時(shí),產(chǎn)品尚未配套狀態(tài)監(jiān)測(cè)系統(tǒng),不具備故障預(yù)測(cè)和狀態(tài)維修功能,可靠性差,事故率高；在一些偏遠(yuǎn)的應(yīng)用場(chǎng)合,對(duì)單螺桿泵的操控和檢修存在著勞動(dòng)強(qiáng)度大、工作效率低、運(yùn)營(yíng)費(fèi)用高等缺陷。因此,針對(duì)以上問(wèn)題,研究開(kāi)發(fā)單螺桿泵自動(dòng)化系統(tǒng)很有必要。 論文根據(jù)溫州某工廠工藝流程中對(duì)單螺桿泵的性能要求和目前的技術(shù)現(xiàn)狀,提出基于變頻調(diào)速的流量控制、基于參數(shù)監(jiān)測(cè)的產(chǎn)品狀態(tài)分析和基于GPRS無(wú)線數(shù)據(jù)傳輸?shù)倪h(yuǎn)程監(jiān)控等技術(shù)方案。本文在單螺桿泵流量控制、狀態(tài)監(jiān)測(cè)、遠(yuǎn)程數(shù)據(jù)傳輸以及監(jiān)控軟件開(kāi)發(fā)等方面進(jìn)行了較廣泛、深入的研究,其主要研究?jī)?nèi)容包括： 1.建立了單螺桿泵遠(yuǎn)程監(jiān)控系統(tǒng)模型,設(shè)計(jì)了以可編程控制器、變頻器和GPRS模塊為主體的遠(yuǎn)程終端設(shè)備(RTU)和監(jiān)控中心。 2.對(duì)流量控制策略進(jìn)行了研究,以快速調(diào)節(jié)和PID閉環(huán)調(diào)節(jié)相結(jié)合的方式,提高了系統(tǒng)對(duì)流量控制的響應(yīng)速度和精度。 3.開(kāi)發(fā)了單螺桿泵狀態(tài)監(jiān)測(cè)系統(tǒng),對(duì)監(jiān)測(cè)參數(shù)的選擇和設(shè)置進(jìn)行了研究,開(kāi)發(fā)了基于狀態(tài)監(jiān)測(cè)和故障預(yù)測(cè)的狀態(tài)維修功能。 4.采用GPRS無(wú)線通信方式,實(shí)現(xiàn)了對(duì)單螺桿泵的遠(yuǎn)程監(jiān)控,真正做到了運(yùn)行現(xiàn)場(chǎng)的無(wú)人值守。 5.以WinCC組態(tài)軟件為平臺(tái),開(kāi)發(fā)了上位機(jī)監(jiān)控軟件,以O(shè)PC協(xié)議的方式實(shí)現(xiàn)服務(wù)器和客戶端的數(shù)據(jù)交換。 試驗(yàn)結(jié)果表明,單螺桿泵遠(yuǎn)程監(jiān)控系統(tǒng)達(dá)到了設(shè)計(jì)要求。監(jiān)控策略的優(yōu)化,提高了流量控制和計(jì)量的精度,大大降低了產(chǎn)品能耗,同時(shí)還提高了可靠性；自動(dòng)化系統(tǒng)的應(yīng)用,提高了工作效率,降低了勞動(dòng)強(qiáng)度和運(yùn)營(yíng)成本。 本課題的研究,為單螺桿泵的自動(dòng)化、智能化發(fā)展進(jìn)行了有益的探索。
[Abstract]:Single screw pump is a rotary volumetric pump with simple and compact structure, strong self-priming ability and wide range of suitable medium. It is widely used in petroleum, chemical, food, sewage treatment and other industries. But at present, the single screw pump used in most technological processes is of extremely low degree of electromechanical integration, the operating parameters of the product do not match with the actual process requirements, the flow regulation and measurement are not accurate, and the energy utilization ratio is very low. At the same time, the product has not been matched state monitoring system, does not have the function of fault prediction and condition maintenance, the reliability is poor, the accident rate is high; In some remote applications, the operation and maintenance of single screw pump have some disadvantages, such as high labor intensity, low working efficiency and high operating cost. Therefore, to solve the above problems, it is necessary to develop the single screw pump automation system. According to the performance requirements of single screw pump in a Wenzhou factory process and the present technical situation, the flow control based on frequency conversion speed regulation is put forward. Product state analysis based on parameter monitoring and remote monitoring based on GPRS wireless data transmission. In this paper, the flow control of single screw pump, condition monitoring, remote data transmission and monitoring software development are studied extensively and deeply. The main research contents are as follows: 1. The remote monitoring system model of single screw pump is established, and the remote terminal equipment (RTU) and monitoring center with programmable controller, frequency converter and GPRS module as main parts are designed. 2. The flow control strategy is studied and the response speed and precision of the system to the flow control are improved by combining the fast regulation with the PID closed loop regulation. 3. The condition monitoring system of single screw pump is developed, the selection and setting of monitoring parameters are studied, and the condition maintenance function based on condition monitoring and fault prediction is developed. 4. The remote monitoring of single screw pump is realized by using GPRS wireless communication mode. 5. Using WinCC configuration software as the platform, the monitoring software of upper computer is developed, and the data exchange between server and client is realized by means of OPC protocol. The test results show that the remote monitoring system of single screw pump meets the design requirements. The optimization of monitoring strategy improves the precision of flow control and measurement, greatly reduces the energy consumption of products, and improves the reliability. The application of automation system improves the working efficiency and reduces the labor intensity and operation cost. The research of this topic has carried on the beneficial exploration for the single screw pump automation, the intelligence development.
【學(xué)位授予單位】：浙江工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH327;TP277

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