Typical Structure Analysis and Engineering Application of Submersible Pump

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Abstract: Submersible pump is a pump and motor combination of a special delivery of liquid machinery, as its name implies, the integration of mechanical and electrical work in the water. It is simple in structure and easy to use. Submersible pumps have been developed rapidly with the development of materials science, sealing technology, control and protection technology, and the improvement of hot and cold processing technology. THE TYPICAL STRUCTURE ANALYSIS AND ENGINEERING APPLICATION OF SUBMERSIBLE PUMPS Shi Weidong (Jiangsu University of Science and Technology, Zhengjiang, 212013) ABSTRACT The author reviews the development general situation and analysis the typical structure of submersible pump at home and abroad, introduces the structure shapes of impeller.types and engineering application at abroad.It is characterized by a great variety and in a novel design. can be used for reference at home. KEY WORDS submersible pump, general situation, impeller structure analysis application Pump and motor combination of a special liquid-conveying machinery, as the name suggests, the integration of mechanical and electrical work in the water. It is simple in structure and easy to use. Submersible pumps have been developed rapidly with the development of materials science, sealing technology, control and protection technology, and the improvement of hot and cold processing technology. In 1904, the Byron Jackson Company of the United States successfully designed and manufactured horizontally connected submersible pumps and submersible motors, which is the "ancestors" of modern submersible pumps. In 1928, the company invented a direct-connected vertical submersible pump, the original form of a modern deep submersible pump. Can be seen that the development of submersible pumps have been more than 60 years of history. Sterbery Flygt, a Swedish company, successfully developed the world's first shallow water (or work surface) submersible pump for water supply and drainage in 1948, radically simplifying the type of pump and reforming the foundation pit And mine drainage equipment, and soon to be successful around the world. In 1956, Flygt produced a submersible pump for sewage discharge, reducing the cost of pumping stations by about half. In addition, Flygt company has solved a series of difficult problems, developed a variety of special submersible pumps can be used to suck abrasive fluid containing solid particles, viscous solution and corrosive liquids. In recent years, Flygt has made great strides in pump construction and has developed four series: the 2000 Series pumping small particles of abrasive fluid, the 3000 series of large flow sewage submersible pumps for pumping civil and industrial wastewater, pumping clear water 5000 series, with a large flow of medium lift helical (axial flow) of the 7000 series. By the 1960s, the United States, Britain, Germany, France, Finland, Japan and other countries also mass-produced operating submersible pump. In particular, Japan (such as Hitachi and Tsurumi) has achieved the standardization and serialization of submersible pumps for construction equipment and engineering and has achieved new successes in structural design, materials selection and automatic control. In 1958, Shanghai People's Electric Machinery Factory began to produce 7kW submerged electric pump in operation area, which opened the prelude to the production of submersible pump in our country. After more than 30 years of development, we have made great achievements. Has produced a QY, QS, QX, QDX (single-phase) series of small submersible pumps. Annual output of about 1.5 million units. Since the late 1980s has developed a QW sewage submersible pump. QZ submersible axial flow pump and QH submersible mixed flow pump. Annual output of about 80,000 units. Institute of Fluid Machinery, Jiangsu University of Technology and the Asia-Pacific special Yangzhou Pump Factory and other plants, a systematic study of the sewage submersible pump, has assumed three provincial and ministerial level scientific research projects. Experimental study of the pump flow state, leaf structure types, geometric parameters of the pump characteristics and so on. Thus grasping a variety of non-clogging sewage submersible pump design theory and methods, to improve the performance of non-clogging pump has accumulated rich experience and has won four national and provincial and ministerial level scientific and technological progress awards, but also by the state Science and Technology Commission as a national key scientific and technological achievements promotion project. 1 Typical Structure Analysis of Submersible Pumps at Home and Abroad 1.1 Typical Structure Analysis of Submersible Pumps Abroad Flygt Corporation is the largest manufacturer of submersible pump in the world and has the most complete submersible pump series. Its new product design, component system standardization, equipment modernization. Now choose one of the typical structure to be analyzed. Flygt company's typical C pump structure, the main features are as follows. (1) The motor cable must be able to withstand media erosion, the cable can be flexible metal hose protection. (2) Stator insulation class F (155 ℃). According to the standard, the motor stator is loaded with overload protector. (3) When the power is above 9kW, the cooling system is installed. The back vane of the impeller circulates the cooling water around the stator chamber. Can also use an independent cooling system, the outer cooling jacket and volute are not the same, the introduction of cooling water directly from the outside. This type of cooling system is particularly effective when the temperature of the pumped liquid can increase or is likely to dry. (4) A double mechanical seal between the motor and hydraulic components to prevent liquid from entering the motor chamber. The upper layers are usually graphite / tungsten carbide, lower tungsten carbide / tungsten carbide. In addition to the tungsten carbide, the sealing material may also be alumina or silicon carbide. (5) According to different uses, different impeller structure type. The illustrated impeller has a large passage area and can reduce the risk of blockage by means of large particles and wrappings. (6) Replaceable seal rings between pump impeller and pump body to keep the pump running at optimum efficiency. Large pumps have two sets of seal rings. 1.2 Analysis of the Typical Structure of Domestic Submersible Pump Yangzhou Asia-Pacific Special Pump Plant is the largest manufacturer of submersible pumps in China. Its products have been successfully applied to large-scale key projects in such countries as Shanghai Baosteel, Daqing Oilfield and Beijing New Passenger Station, replacing a large number of imported products. At the same time, its development products have entered the international market. Designed by Institute of Fluid Machinery of Jiangsu University of Science and Technology, the typical structure of QW sewage submersible pump produced by Yangzhou Asia-Pacific Special Pump Factory is as follows. (1) Submersible pumps with power above 30kW. Wiring cavity with water detection probe, when the cable is broken or other reasons, the probe sends a signal, the control system to protect the pump. (2) The stator of the motor adopts Class F insulation (155 ℃) and is designed as a thin and long cylinder with over-temperature protection. (3) When the power is above 15kW, each pump is equipped with its own cooling system. The back vane of the impeller circulates the water in the vortex chamber to the outer periphery of the stator chamber to circulate and cool, which can ensure the normal condition of the pump at the lowest water level in the pool or drained Run. (4) The lower end of the motor chamber is equipped with a water leak detector - float switch, which sends a signal when the water enters the motor chamber and the control system implements protection for the pump. (5) Between the motor and hydraulic components with a double mechanical seal to prevent leakage of medium into the oil chamber, the upper and lower scientific matching can ensure the safe and reliable pump operation. Sealing materials are silicon carbide, tungsten carbide, carbide or super wear-resistant seal vice. (6) The oil chamber is equipped with electrode protection. When the water enters the oil chamber, the electrode sends out a signal which is displayed by the control system to inform the management staff timely maintenance. At the same time, the control system closely monitors its leakage. (7) The unique design of the impeller, with a large channel, through the large materials and fibers, to reduce the risk of clogging, winding. (8) A replaceable seal ring is placed between the pump impeller and volute to keep the pump running at optimum efficiency. 2 foreign submersible pump types and engineering applications With the continuous development of science and technology, foreign submersible pump appeared a lot of new types of structures and types, this paper only Flygt company to produce submersible pumps as an example for an introduction. Its wide variety, innovative design, the reference for domestic counterparts. Table 1 Flygt Submersible Pump Type and Engineering Application Name Impeller Structure Type Impeller Structural Features Engineering Applications B Pump Open or semi-open impeller, anti-wear materials, with adjustable guide vane and filter Mobile structure, Put it into the water to start, to meet the special requirements of large flow rate, high lift, limited space or explosive environment Widely used in construction sites, caves, harbors, factories, ships and other water supply and drainage or water jet, etc., Such as clay, sand, gravel, drill cuttings and other liquid media, etc. Gunsq1 li {display: block; float: left; width: 200px; overflow: hidden; Procurement】 Circulation pump 【Purchase】 Motor 【Purchase】 Booster Pump 【Purchase】 Chemical Pump 【Purchase】 Vertical Multistage Pump 【Purchase】 Carbon Steel Electrode 【Purchase】 Screw Pump 上 一篇: Economic Analysis of Ground Source Heat Pump A: "Small submersible sewage pump selection and installation" Content var cpro_id = "u2852961"; Special recommendation The advantages and main purposes of single screw pump resistance Chi high quality plunger pump business "beachhead" in full swing Haishenfu plastic industry new benchmark valve Market Analysis: The valve market turnover of up to 150 billion yuan 2018 Xiamen International Vending Machine and self-service products Exhibition Venue - Time Related Articles Products Guide Technical Interpretation Media Focus Exhibition Info Olsen Pump - China National brands of industrial pumps: large-diameter diesel self-priming sewage pump technology to fill the gaps In the audit of the audit of Sinopec, Olsen pump officially became the sinopec long-axis pump and other material procurement suppliers · Olsen pump - the national brand of China's industrial pumps : Large-diameter diesel self-priming sewage pump technology to fill gaps in the domestic · Olsen pump audit through the audit of Sinopec, the company officially became the long-axis pump and other material procurement suppliers · Analysis of the advantages of water ring vacuum pumps and shortcomings of water ring pumps · Analysis of magnetic centrifuge Pump failure analysis and solutions leveraging the "valve heat wave" east wind, plowing the South China market, 2018 FLOWTECH Guangdong International Pumping Valve Exhibition ready to go · What are the characteristics of fine aggregate concrete mortar pump? · What is a small secondary structure column pump? 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Goblet Holder

wire holder is made of high quality 304 stainless steel, It is easier to clean without rust, safe, healthy and durable, Prevent rust or chemicals from contaminating food and damaging health. Suitable for putting the wine glass holder.

China leading manufacturers and suppliers of Wine glass holder,goblet Holder, and we are specialize in Wine Rack,Hanging Wine Rack, etc.

stainless steel goblet holder,goblet rack,Stainless steel goblet rack,wine glass holder,wine glass rack

Shenzhen Lanejoy Technology Co.,LTD , https://www.injectionnut.com