Centrifugal Pumps Gas handling combi pump in segmental design
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1 Centrifugal umps Gas handling combi pump in segmental design UEA... TECHNICAL DATA Output: max. m³/h Differential pressure: max. bar Speed: max. rpm Temperature: - C to + C Casing pressure: N up to size N from size Shaft sealing: mechanical seal Flange connections: DIN N resp. N Option: ANSI lbs Sense of rotation: clockwise looking at the drive side Certification: ATEX 9/9/EC Ex II G c T-T GOST ALICATION Gas handling centrifugal pumps of the series UEA is used for trouble-free handling of pure or turbid, not aggressive liquids, containing no solids. The gas handling capability is used to handle mainly liquid gas (LG) and other hydrocarbon liquidsat reshipment points and large gas depots, fire extinguishing plants sprinkling and irrigation plants emptying of fuel trucks filling of high tanks, refuelling cars. Centrifugal pumps of the series UEA with special NSH inducer stage are applied for trouble-free pumping under unfavourable conditions at suction side. A special priming stage is able to absorb eventually existing vapour from the suction side. The capability of the pumps in this series to handle liquids at the boiling point, allows a wide-ranging application when handling: LG Hydrocarbon condensats Hydrocarbon liquéfie gases DESIGN Horizontal centrifugal pumps of the segmental type with closed impellers and a suction stage. The suction stage is installed at discharge side. It is arranged in parallel to the last liquid handling stage and operates acc. to the sucking-through principle. The design UEA has an axial inlet with NSH inducer stage. The design UEA has an internal priming stage to absorb eventually arisen gas from the suction side. The axial thrust is compensated by single-impeller relief. The remaining axial thrust is compensated by antifriction bearings of sufficient size. The vertically to the axis divided casings are sealed by O-rings and the connected through external casing connection screws. CONSTRUCTION Casing pressure: max. bar up to size from - C to C max. bar up to size from - C to C ressure stages for higher temperatures as per DIN lease note: Technical rules and safety rules. Casing pressure = zero delivery head + pos. suction pressure osition of the branches: Suction flange axially and discharge branch radially upwards. Flanges: At suction and discharge side the flanges correspond to DIN N resp. DIN N. Flange design with groove to DIN or bored to ANSI possible. Hydraulics: Centrifugal hydraulic with special NSH-impeller and gas priming stage. Bearings: At suction side a liquid surrounded sleeve bearing, at discharge side grease lubricated inclined ball bearings as per DIN. The designation of this construction:. A. First grease filling for antifriction bearing is made in the factory. Sense of rotation: Clockwise when looking at the pump from the drive end. Shaft sealing: The shaft can be sealed either by stuffing box or standard mechanical seal. Special for liquid gas: Designation DNE: Balanced standard single mechanical seal with throttle bush, with internal flushing lower. Temperature limit: - C Designation RBG: Balanced tandem double mechanical seal Flowserve /, bar, Temperature limit: - C, mechanical seal with internal and external flushing lower. Designation XEY Burgmann Cartex balanced double mechanical seal in back to back or tandem arrangement. Depending of external supplier, seal with internal and external flushing with pumping rings N, t = - C C, seal (AI / plan and ).... E UM TECHNOLOGY UEA III/ /
2 Sectional drawing and nomenclatures Spezial NSH inducer impeller Spezial gas absorber stage UEA with balanced single mechanical seal DNE with throttle bush UEA with XEY, Cartex (N) double mechanicals seal UEA with RBG, (N) double mechanicals seal Arrangement:: Arrangement: Back to back AI plan or alternatively Tandem AI plan Tandem AI plan
3 Material design: Item COMONENTS MATERIAL DESIGN A C suction casing discharge casing stage casing GGG. GS - C 9 stage shell suction stage (internal) side cannel casing GG shaft X Cr impeller (internal) GG NSH impeller GG vane wheel impeller Cu Zn Al bearing casing GG O-ring special low temperature perbunan shaft sealing DNE RBG XEY X Cr Ni Chrome steal/carbon, perbunan (SANGG) X Cr Ni Chrome steal/carbon, perbunan ( x SANGG) X Cr Ni Si-carbide/carbon, perbunan (AQMG-AQMG). shaft sleeve at mechanical seal X Cr Ni Mo Casing seal: The casing is sealed by O-rings of perbunan. Designation of this construction type:, other material as option possible. Drive / Speed: By commercial electric motors, construction type IM B Observe the following max. speed dependent on the number of stages: serie + size max. speed serie + size max. speed serie + size max. speed serie + size max. speed UEA MA UEA - UEA - 9 UEA - UEA MA UEA - UEA - UEA - UEA - 9 UEA - UEA - UEA - Large number of stages upon request. Technical documentation for these programmes are available on request.
4 Data regarding size series + size speed hydraulics + bearings shaft sealing material design casing seal UEA A. pool - ( pool possible) - pool M. pool pool ( pool possible) pool ( pool possible). A two grease lubricated single row inclined ball bearings and one liquid surrounded sleeve bearing. B one grease lubricated inclined ball bearing at suction side and one grease lubricated grooved ball bearings at discharge side Specially for liquefied gas DNE RBG XEY Flowserve, balanced standard single mechanical, N, t = - C C, seal with internal flushing, throttle bush with option to monitor leakage Flowserve balanced double mechanical seal (tandem). N, t = - C C, seal with internal and external flushing (AI / plan ), option to monitor leakage Burgmann Cartex balanced double mechanical seal in back to back or tandem arrangement. Depending of external supplier seal with internal and external flushing with pumping rings N, t = - C C, seal (AI / plan and ), option to monitor leakage A C cast iron with nodular cast iron GJS--LT (.) (GGG.) cast steel G GH (.9) (GS- C) O-rings F O-ring + ANSI flanges - 9 DNE MA - A UEA - RBG AA - - MA - 9 XEY - AA C F design code pump with free shaft end pump with coupling, ready drilled at motor side and contact safety device for shaft coupling as above, but pump and contact safety device for the shaft coupling mounted on base plate, incl. shims for pump or motor and set of rag bolts as above, but with motor e.g. kw -phase AC motor ( Hz, V), at rpm e.g. AB Motor selection table for EEXd.. motor n=9 rpm motor n= rpm kw size code kw size code M TA L LB, L UA M MB M VA, S NB L XA, M B L YA M SB M AA L UB M BA, M VB S CA L WB 9 M DA L XB S EA S ZB M FA M AB M GA M BB S CB 9 M DB S EB FB Example for ordering: The size UEAB AA DNE A with coupling, ready drilled at motor side and contact safety device for the shaft coupling has the complete order number: UEAB. AA DNE A The size UEAB AA DNE A as complete unit with kw -phase AC motor, rpm, has the complete order number: UEAB. AA DNE A AB On delivery the point (. ) in the fourth place of the type design will be replaced by a letter, in our works. In case of ordering the designs and please indicate always the motor being provided, in order that the coupling can be ready drilled at motor side, the suitable base plate selected and the appropriate shims be attached.
5 Characteristic curves ρ =, /dm n = 9 rpm UEA - Q - UEA - Q - NSH,,, [mlc],, NSH [mlc], Characteristic curves ρ =, /dm n = 9 rpm UEA - UEA - Q - Q - 9 9,, NSH [mlc],, NSH [mlc],, 9
6 Characteristic curves ρ =, /dm n = rpm UEA - Q - [bar 9 UEA - Q NSH [m] 9,,,, 9 Q [m/h] NSH [m], 9,,, 9 Characteristic curves ρ =, /dm n = rpm UEA 9 - UEA - 9 Q - Q ,, NSH [m],, 9 9 9,, NSH [m],, 9
7 Characteristic curves ρ =, /dm n = rpm UEA - Q - 9 UEA - Q - Q [m /h] Q [m /h] Q [m /h] NSH [m] Q [m /h] NS [m] Characteristic curves ρ =, /dm n = rpm 9 UEA - Q - UEA - Q - 9 Q [m /h] Q [m /h] 9 9 NSH [m] NSH [m]
8 Dimension Table nominal casing pressure N for UEA - N for UEA u e = connection for drain G /, for UEA G½ u m = connection for pressure gauge G / size DN A DN E b c e f h h n n s q d k l t u 9 size a m m a m m a m m a m m a m m size a m m a m m a m m flange connections to DIN N N DN A,E D k 9 9 d x number x x x x x x x x
9 Dimension table Dimensions in mm ump Motor size kw size a b c e e e f h h h l p p w M 9 9 Mx 9, L 9 9 Mx M Mx, L Mx M Mx L 9 9 Mx L 9 Mx M 9 Mx M Mx L Mx L Mx M Mx L 9 9 Mx L 9 9 Mx M 9 9 Mx 9 M 9 Mx M 9 Mx L 9 9 Mx L 9 Mx M 9 9 Mx M 9 9 Mx 9 M Mx 9 M Mx M x 9 Mx S 9 x Mx S 9 x Mx L 9 Mx S 9 9 Mx L Mx S x 9 99 Mx 9 M x 9 99 Mx, M 9 Mx L 9 Mx 9 L 9 9 Mx 9 L x 9 Mx L 9 x 9 9 Mx S x 9 Mx 9 9 S x 9 Mx 9 M x 9 Mx 99 M x 9 Mx M x 9 Mx M x 9 Mx 9 M base frame M base frame M base frame Rag bolt 9
10 Dimension table Dimensions in mm ump Motor size kw size a b c e e e f h h h l p p w M 9 Mx L 9 9 Mx 9 M 9 x 9 9 Mx 9 S x 9 Mx 99 M x 9 Mx 99 M 9 x Mx M x 9 Mx M x 9 9 Mx S x 9 Mx M x 9 Mx 9 S x 9 Mx S x 9 9 Mx 9 9 M x 9 9 Mx 9 9 S base frame 9 M base frame 9 M base frame S base frame S base frame S base frame M base frame M base frame Rag bolt Accessories Tandem mechanical seal supplier system Operating with quench fluid (AI, plan ) The N vessel is operating with atmosphere pressure ressurization is not necessary for dual mechanical seals in tandem arrangement. The supply fluid (quench) is under atmospheric. Connection of the vessel via an orifice, mm, gas is led via orifice to a exhaust pipe or flare. Requested pipe connection ½. As quench liquid can be used water or water with glycol as frost protection. Liquid MIN filling is controlled by level switch. As option for reasons of safety a pressure switch should trigger an alarm as this can indicate a malfunction of the mechanical seal. Thermo siphon (natural) circulation or forced circulation. Back to back mechanical seal supplier system Operating with quench fluid (AI, plan ) The N vessel is loaded with minimum - bar above max. pump outlet pressure for dual mechanical seals in back to back arrangement. The supply fluid (quench) is under pressure. Connection of the vessel prepared for external N quench pre pressure. As quench liquid can be used water or water with glycol as frost protection. Liquid MIN filling is controlled by level switch. As option for reasons of safety a pressure switch should trigger an alarm as this can indicate a malfunction of the mechanical seal. Thermo siphon (natural) circulation or forced circulation. Filling of quench fluid with hand pump.
11 Monitoring of leakage, mechanical seal with throttle bush EEx pressure switch In case of shaft seal leakage the pressure will increases in seal chamber system. Switch point of, bar can be used to shout down the pump and close valves. To monitor tandem mechanical seal and throttle bush execution. Explosion class: Eex de IIC T, TB ATEX ressure: N Range:, bar Size: A, V AC, V DC Connection: out side G/ / in side G/ Electric connection scheme Dry running protection by liquid sensor suction pipe EEx Liquiphant In case of no liquid a liquid sensor installed in frond of suction flange is protecting the pump for dry running damages Relay circuit: operating contact rotection : [EEx ib] IIB and IIC Max. values: U < V AC I < A <VA cos ϕ >, Mains connection: V, + % - %, / Hz Installation: Mounting into a switch board Electric connection scheme
12 Minimum flow by pass valve Used if operating pressure is bar below max pressure! Material: GJ_S --LT, GGG.,. G GH,GS C,.9 ressure: N Flange: DIN Temperature: - C to C, GJ_S --LT - C to C, G GH Local rules must be considered Approval: TÜV Nord id. no. Open press: Application: by order, min bar above duty Counter pressure dependent Water, carbon dioxine, LG etc. This by pass valve is operating counter pressure dependent, that means open pressure is independent of winter or summer times always relating to pump differential pressure. An installation of a bypass valve is recommended to ensure that the maximum pressure and admissible minimum flow of the pump is maintained. In order to compensate for the fluctuation in vapour pressure over the seasons this valve is designed as back pressure-regulated bypass valves. That means, this valve is opening at a set differential pressure of the pump, seasons independent. Minimum flow by free flow control valve Used if operating pressure is < bar below max pressure, minimum flow less than % of operating flow! In case a by pass valve is not suitable the of admissible minimum flow can be controlled by a free flow control valve. This valve is designed for automatic control of the required pump minimum flow. The minimum flow should be less than % of max. pump operating flow. Any changes in the interest of the technical development are reserved. Sterling SIHI GmbH Halbergstraße, Ludwigshafen, Germany, Tel.: +9 () -, Fax: +9 () -9
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