Dive the typical structure analysis of electric pump and project apply

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KEYWORDSsubmersiblepump, generalsituation, pump of report of Impellerstructureanalysisapplication foreword dive is a kind of pump and electric machinery close 2 to carry liquid machine specially of one, just as its name implies, submerge of Electromechanical an organic whole works. Its structure is simple, use convenient. Of the development as material science, sealed technology, control and protective technology and level of cold hot-working craft rise, pump of phreatic water report got flying development. 1904, jackson of cloth grand * (the first successfully design of ByronJackson) company, made pump of report of horizontal connective dive and phreatic water electric machinery, this is pump of contemporary dive report " ancestor " . 1928, this company invented pump of report of dive of direct connective vertical, this is the first form of pump of water and electricity of contemporary deep Jing Qian. Visible, the development of pump of phreatic water report had had 60 old histories. Flying force of Sweden (SterberyFlygt) company, developed a success first 1948 the first shallow water that uses to catchment (or call course of study the area) pump of phreatic water report, from go up at all simplified the type of pump, the sewerage that reformed building radical hole and mine to wait, the success is scored very quickly inside limits all over the world. 1956, flygt company production went out to discharge the sumbersible pump that sewage uses, make the cost of sewage pumping station reduces an in part about. In addition, flygt company still solved a series of difficulty problems, all sorts of special sumbersible pump of development can use pump to contain agglutinant solution and the abrasion liquid of solid grain, caustic liquid to wait. In recent years, flygt company already obtained very great progress on the structure of pump, developed 4 set: Smoke send contain liquid of little grain abrasion 2000 series, smoke send civil the sumbersible pump of sewage of 3000 series large flow with industrial waste water, take the 5000 series that send clear water, lift helix waits in having large flow (the axis flows) the 7000 series of type. Arrived 60 time, big also batch produces the country such as the United States, England, Germany, France, Finnish, Japan pump of report of work area go under water. Especially Japan (if day stands, the crane sees wait for a company) already realized construction equipment to use the standardization that uses pump of phreatic water report with the project and seriation, no matter be in,structural design, material is chosen and the respect such as automata gained new success. The pump of report of work area go under water that our country began to produce 7kW by factory of Shanghai people electric machinery 1958, those who opened our country to dive electric pump is produced is prelusive, through 30 old development, had gained greater success at present. Already produced early or late gave QY, QS, QX, QDX(single-phase) model the pump of small-sized dive report of series. Produce per year a quantity to make an appointment with 1.5 million. Pump of report of QW sewage go under water developed again since 80 time later period. Pump of mixed flow of QZ dive axial-flow pump and QH dive. Produce per year a quantity to make an appointment with 80 thousand. The factory such as institute of machinery of fluid of college of Jiangsu grain industry and factory of water pump of special type of Yangzhou city Asia-Pacific cooperates, studied pump of report of sewage go under water systematically, assumed task of scientific research of class of 3 provinces, ministry early or late. The effect that the experiment studied parameter of the structural type of the flow condition inside pump, leaf, geometry is characteristic to pump. Mastered all sorts of notting have to jam thereby the design theory of pump of report of sewage go under water and method, do not have in improvement jam the performance side of pump accumulated rich experience, have the honor to win award of progress of science and technology of class of country and province, ministry 4 times early or late, return key of achievement of science and technology of level of the state that be labelled by state committee of science and technology to popularize plan project at the same time. The structure analyses typical case of pump of report of 1 domestic and international dive 1.

Company of Flygt of analysis of construction of type of pump of report of 1 abroad dive is the biggest production on the world the manufacturer of pump of phreatic water report, have the most all ready sumbersible pump series. Its product is set novel, package standardization within the system, equipment modernization. Choose now among them a kind of typical structure gives analysis. The C pump structure of Flygt company typical case, main characteristic is as follows. (The cable of 1) electric machinery must endure medium to erode, cable can use protection of flexibility metal collapsible tube. () of ℃ of F(155 of grade of 2) stator insulation. According to the standard, overload protector is loaded inside electric machinery stator. (3) power has cooling system in 9kW above fashionable dress, the back lamina of impeller is refrigerative water surrounds stator room circulates. Also can use independent cooling system, the refrigeration of periphery is covered do not be interlinked with spiral case, direct by exterior introduce cooling water. Smoke sent liquid to temperature can lift or do the condition that run to fall likely when pump, adopt this kind of cooling system particularly effective. (4) contains between electric machinery and hydraulic component double deck machinery is sealed, enter electric machinery antrum in order to prevent a liquid. Normally superstratum is black lead / carbonization tungsten, tungsten of carbonization of ／ of tungsten of lower level carbonization. Additional, sealed material de-carbon changes tungsten beyond, also can use alumina or carborundum. (The utility with 5) different basis, use different impeller structure type. Graphic representation impeller has large passageway area, can pass big grain and entanglement, reduce it is dangerous to jam. (6) contains between pump impeller and pump housing the seal ring that can change, move in order to maintain pump with optimal efficiency. Large pump contains two groups of seal ring. 1.

Factory of water pump of special type of Asia-Pacific of Yangzhou of analysis of construction of type of 2 home sumbersible pump is the biggest manufacturer that at present home produces pump of phreatic water report, its product applies successfully at the country such as station of new customer of oil field of Shanghai treasure steel, Daqing, Beijing large major project, a large number of replacing introduce a product. In the meantime, its develop a product to already infiltrated international market. The typical structure of pump of report of go under water of the QW that by machinery of fluid of college of Jiangsu grain industry factory of water pump of special type of Asia-Pacific of institute design, Yangzhou produces sewage, its are main the characteristic is as follows. (1) power is in the sumbersible pump of 30kW above. Set inside wiring antrum slack detect probe, rupture when cable or when other reason is slack, probe issues signal, control system carries out protection to pump. (Stator of 2) electric machinery uses F class to be isolated from (155 ℃ ) , design fine and long cylinder, outfit overheat carries protector inside. (3) power is when 15kW above, each pump all cools of provide for oneself system, the current that the back lamina of impeller makes eddy indoor enters stator room periphery to cool circularly, can make sure water pump is in the low water of cistern or smoke dry circumstance to play normal movement. (Lower end of antrum of 4) electric machinery contains slack detector ― bobber switch, issue signal when water enters electric machinery antrum, control system carries out protection to pump. (5) contains between electric machinery and hydraulic component double deck machinery is sealed, arrive in order to prevent medium leakage oil is indoor, conjugate of science of superstratum, lower level can make sure water pump is locomotive safety, reliable. Sealed material has tungsten of carborundum, carbonization, hard alloy deputy or super- wear-resisting is sealed deputy. (6) oil is indoor set electrode protection, when water enters oily room electrode issues signal, by control the system is shown, inform administrator to maintain in time. In the meantime, control system rigor is surveillant its leakage circumstance. (The impeller that 7) designs distinctly, have very big channel, can wait through big stock and fiber, reduce jam, voluble danger. (8) contains between pump impeller and spiral case the seal ring that can change, move in order to maintain pump with optimal efficiency. The sort of pump of report of 2 abroad dive and project use the ceaseless development as science and technology, pump of phreatic water report appeared many new-style structures and sort, the pump of phreatic water report that the article produces with Flygt company only is exemple make one introduction. Its breed is various, the design is original, to home the person of the same trade is had draw lessons from action. Project of the sort that expresses pump of report of dive of company of 1 　 Flygt and characteristic of structure of impeller of type of structure of impeller of project application name applies B pump to open type or ajar type impeller, fight grind material to make, with adjustable guide vane and mesh are used extensively at vessel of construction site, grotto, harbour, factory, ship to wait for catchment or water jet, can smoke send be like,contain abrasive clay, arenaceous, clastic rock, get the liquid medium such as bits to wait. Movable type structure, put in water to be able to start, can satisfy Cheng of large flow, soar, finite empty occasional to explode easily the special requirement such as the environment. C pump is not had jam impeller of type of the flow path that shut type, have good dependability and taller efficiency. Basically use at urban pumping station and sewage treatment plant to smoke send sewage and slop, smoke in industrial circuit send cooling water, liquid waste, caustic medium to wait, building site and large plant are successive catchment. Suit to smoke very much send the medium that contains long fibrous material and grain of large solid body. Installation is in small-sized and simple pumping station, but concealed is set in underground, pump is OK and fast and simple installation leaves pump hole on slideway or rope. D pump comes back impeller drifting type is used extensively at be being smoked on building site, mine, industry to send contain the long fiber, clay, waste water that gets fragment of bits, rock, mud and caustic medium, can satisfy explode easily the requirement of environmental catchment. F pump opens type impeller and contain S amputator, have smoke send, cutting and mixture function. Dependability is good, efficiency is tall. Basically use at be being smoked on agriculture to send a liquid dung, OK and broken dry solid, standing grain lever and other grow fiber material, helical impeller entrance can make inspiratory stiff thick manure sends into pump, share 4 kinds of norms. The structure is compact, installation is on the slideway in manure pool, also can install in pool of keep in storage, can cooperate to use with phreatic water beater. G pump opens type or closed impeller, many lamina basically are used at basement or drain off water of other field ground, also can use at irrigating, can satisfy little flow and moderate lift need, agree with take the water that send clear water or spends pollution gently, share 3 kinds of norms. The structure is compact, installation is simple, need to put pump at pump hole bottom only can. H pump opens type or impeller of type of the flow path that shut type, fight grind material to make basically use at mine, building site, grotto, channel and the place such as dikes and dams to smoke send the liquid that if get bits, arenaceous, clastic rock to wait,contains abrasion grain, inspiratory end is used adjustable balata cladding, benefit at be in efficient dot moves. L pump shuts impeller of type of type flow path, match with guide vane photograph, dependability is good. Use extensively at vessel of city, agriculture, ship, industry to wait for catchment, can satisfy need of low lift large flow, discharge can amount to 2000m3/h, agree with take the water that send clear water or spends pollution gently, share 6 kinds of norms. Installation, safeguard simple, use without pipeline join is designed. M pump opens type impeller, the entrance is in with a mincing device, you Ge alloy and stainless steel composition are special apply to pressure sewage system, the pipe that can be 40mm through mere diameter is carried. P pump is adjustable blade axis sheds type impeller, have efficient and energy-saving characteristic. Basically use at agriculture, city to go up to catchment and industry smoke send cooling water to wait, can use at controlling system of inland river aqueduct. Can satisfy the special need of low lift large flow, agree with take the water that send clear water or spends pollution gently. The structure is compact and simple, do not beg special installation, need next to housing falling only dash forward on the shoulder can. Closed impeller of R pump much lamina, with cast-iron or stainless steel is cast, odd side or bilateral (double suck) into water. Special agree with agricultural sprinkling irrigation applies with all sorts of industry, if offer clear water, technological process,wait with water, eject and cooling water. Can satisfy soar Cheng large flow to need, discharge amounts to 2000m3/h, lift amounts to 110m, agree with take the water that send clear water or spends pollution gently, have a variety of norms and structural type. The function is strong, reliability is high, be installed easily and safeguard. The sumbersible pump of our country of 3 last words passes 30 old development, had gained quite great success. But the difference with bigger than still having posture of as advanced as current world nation, the breed of the product is not quite much still, applied domain also relatively narrow, its dependability and quality are not quite stable also, these remain farther improvement, in order to make the country dives electric pump can infiltrate morely at an early date international market, replace stage by stage introduce a product. Can foreknow, as the ceaseless development of socialist market economy, each branch that the pump of phreatic water report of ourselves is sure to give the industry and agriculture such as catchment, environmental protection production and national economy in Electromechanical irrigation and drainage, town produces bigger and bigger effect. Author brief introduction: Shi Weidong, male, was born in Feburary 1964, was graduated from Jiangsu manage to be versed in university motivation fastens hydraulic and mechanical major 1984, labour learns bachelor, currently hold the post ofdeputy researcher of college of Jiangsu grain industry. Writer unit: Shi Weidong (college of Jiangsu grain industry, zhenjiang, 212013) CNC Milling CNC Machining