Contents. Identification LHC. Horizontal split case pumps. Type key. Identification Type key

Transcription

1 Contents dentification Type key Product data ntroduction Applications Features and benefits Performance range pole pole pole Construction Sectional drawing Construction features Test pressure Operating conditions Sound/noise level Ambient temperature and altitude Pump location Pumped liquids Liquid temperature nlet pressure Motor electrical data pole pole pole Dimensions Bare shaft pumps Performance curves/ Technical data pole pole pole Accessories Counter flanges 0 dentification Type key The example shows an 0 pump with a mm impeller diameter, PN flanges, with cast iron casing & impeller and with a carbon/ceramic//s.s 0 mechanical shaft seal. Example 0 / M A A Type range Nominal diameter of discharge port (DN) Nominal impeller diameter (mm) Actual impeller diameter (mm) Code for sealing arrangement G = M = M = Code for pipework connection = A = B = = Code for materials A = B = C = D = Code for shaft seal material = = = Gland packing* Rubber bellows type mechanical seal Cartridge type mechanical seal ANS flange PN flange* PN flange ANS flange pump housing with cast iron impeller* pump housing with bronze impeller pump housing with CF impeller pump housing with CFM impeller Carbon/Ceramic//S.S 0 Sic/Sic/Viton/S.S Carbon/Sic/Viton/S.S * Standard construction.

2 Product data ntroduction have horizontal pump shaft and the volute casing can be dismantled in the horizontal plane along the drive shaft. The Lubi horizontal split case pump, type is available in two main designs: Singlestage Twostage Applications Water Supply. Pressure boosting for high rise buildings, hotels, industry etc. ndustrial washing & cleaning systems. Fire Protection systems. Cooling & Air Conditioning systems. Boiler feed and condensate transfer system. rrigation systems for fields including sprinkler & drip irrigation systems. Features & benefits Following are the main features and benefits offered by the pumps. The pumps are non self priming horizontal split case pumps with radial suction port and radial discharge port. Standard flanges for suction and discharge ports will be PN as per DN standard EN and PN as per DN standard EN. ANS and ANS as per ASME B. are available on request. These pumps are long coupled pumps with TEFC squirrel cage induction motor with main dimensions complying to EC standards and mounting designation B (M 0). These pumps are available with gland packing as well as mechanical shaft seal. These pumps have the discharge range from 0 to 0 m³/hr and head range from to 0 metres. Motor ratings are from to kw. The pump impellers are dynamically balanced to grade. of SO 0. These pumps can be supplied as a complete unit with motor, coupling, coupling guard and fabricated steel base frame. These pumps are available with our standard range of EFF motors. They can also be supplied with EFF motors on request. The split case construction enables removal and dismantling of the internal pump parts e.g. bearings, wear rings, shaft seal and impeller without disturbing the motor & pipe work.

3 Performance range Pole USgpm pole, 0 Hz 0 Q l / min l / sec m /h 0 0 Note: is two stage pump. H m

4 Performance range Pole USgpm pole, 0 Hz Q l / min l / sec m /h Note:,,, 0 and are two stage pumps. H m

5 Performance range Pole USgpm pole, 0 Hz Q l / min l / sec m /h 0 0 Note: 0 and are two stage pumps. H m

6 Construction Sectional drawing Materials Pos. Component Aversion Bversion Cversion Dversion Volute casing mpeller Back cover Bearing housing nternal bearing cover External bearing cover Gland follower Shaft Shaft sleeve Lock nut Wear ring Key Plugs Oring Water thrower AS AS Bronze AS Fig. Single stage pump Bronze AS AS AS Bronze AS CF AS 0 AS 0 AS 0 CF AS 0 CFM AS AS AS CFM AS

7 Construction Sectional drawing Materials Pos. Fig. Two stage pump Component Aversion Bversion Cversion Dversion Volute casing mpeller Back cover Bearing housing nternal bearing cover External bearing cover Gland follower Shaft Shaft sleeve Lock nut Wear ring Key Plugs Oring Water thrower Centre ring AS AS Bronze AS Bronze AS AS AS Bronze AS CF AS 0 AS 0 AS 0 CF AS 0 CFM AS AS AS CFM AS

8 Construction Construction features Volute casing The volute casing of the pumps are designed to be robust in construction to take the undue stresses offered by the pipe work. They have an radial suction port and radial discharge port. Standard flanges are PN as per DN standard EN and PN as per DN standard EN. ANS and ANS as per ASME B. are available on request. The volute casing are provided with a priming & drain holes closed by plugs. Bearings The pumps are fitted with two standard singlerow deep groove ball bearings, the bearings are of the open type permitting the bearings to be relubricated. The bearings are lubricated by Lubi prior to delivery. mpeller The impeller is a closed impeller with single or double curved blades and extra smooth surface finish and machined completely from outside to ensure high efficiency. The impeller comes in two variants. Doublesuction impeller with inflow of liquid from both sides. Double suction impellers are used in singlestage pumps only. Singlesuction impeller with inflow of liquid from one side. Single suction impellers are used in twostage pumps only. Because of hydraulic balancing the axial thrust on bearings are compensated giving a longer bearing life. Two stage pumps have two laterally reversed singlesuction impellers mounted backtoback. The direction of rotation of impeller is clockwise when viewed from the motor nondriving end. Fig. Upper and lower volute casing The single stage pumps are of the inline (symmetric) design, whereas the two stage pumps have asymmetric design They are dynamically balanced to grade. of SO 0. All impeller can be trimmed to adopt them for the duty point requested by the customer. Suggested trimmed impeller diameter as shown on the performance curves are theoretical. Performance may vary from what is shown on the performance curve. Fig. SNGLE STAGE Fig. TWO STAGE (nline symmetric design) (Asymmetric design) Shaft The shaft is available in carbon steel as well as stainless steel. A bronze or stainless steel shaft sleeve is provided in the stuffing box to protect the shaft from wear & corrosion. As shaft and bearings are strong and properly sized the pump can be driven by a belt drive or diesel engine without any problem. A water thrower is provided on the shaft to prevent liquid from entering the bearing housing and damaging the bearing. Fig. Singlesuction impeller The shaft is supported by bearings at both drive end and nondrive end of the pump. Fig. Pump shaft Fig. Doublesuction impeller

9 Construction Wear rings The pump have wear rings (pos.) between impeller (pos.) and volute casing. The wear rings protect the volute casing against wear. Besides, the wear rings have a sealing function between impeller and volute casing. When the wear rings worn out, the efficiency of the pump will be reduced, and wear rings should be replaced. The wear rings are made of same material as the impeller. Coupling pumps are fitted with a tyre type flexible cushion coupling. Fig. Rubber bellows shaft seal type (M) These couplings are highly flexible, resilient and absorbs large misalignment. Due to the coupling design, the rotating assembly of pumps can be removed and serviced without dismantling the motor from the base fame. Fig. Cartridge shaft seal type (M) Stuffing box Stuffing boxes are available with lantern rings and graphite gland packing rings. A Fig. Tyre type flexible cushion coupling Base frame Pump and motor are mounted on a common steel base frame in the form of welded, steel cchannel profile. Fig. Sectional view of an uncooled stuffing box Fig. pump motor unit mounted on a base fame Mechanical shaft seal The shaft seal is an unbalanced, mechanical shaft seal. Two types are available as standard, A rubber bellows type (M) for singlestage and twostage pumps. A cartridge type (M) with Oring for singlestage and twostage pumps. For other mechanical shaft seal variants, contact Lubi. Pos. Description Pos. Shaft sleeve Gland Graphite packing Lantern ring A Description Drilled hole for barrier fluid (pumped liquid) Test pressure All pumps are hydrostatic tested for leakage as per the following test pressure using water containing corrosion inhibitor at room temperature. Pressure rating Operating pressure Test pressure PN PN ANS ANS bar bar psi psi bar. bar psi psi Motors The motors are squirrel cage induction motors, totally enclosed fan cooled with main dimension to EC standards. The standard motors with the pumps are all as per EFF efficiency. EFF efficiency motors can be available on request.

10 Operating conditions Sound/Noise levels As shown in the table below the motor noise levels will not exceed the maximum sound pressure level [db(a)] as per SO. Motor kw Maximum sound pressure level [db(a)]so Threephase motors pole pole 0 Ambient temperature and altitude The ambient temperature for proper motor operation must not exceed. + C for EFF motors + 0 C for EFF motors. n case of ambient temperature exceeding C (or 0 C for EFF) or if motor is to be installed more than 00 metres above sea level then a higher output motor should be selected due to low cooling effect. Please refer the chart as shown in fig. for selection of the motors at higher temperature or altitude. P [%] pole EFF, Lubi t [ C] m Fig. Motor P depend on temperature/altitude Example A kw EFF motor has to be increased in output to. kw if ambient temperature is 0 C. A kw EFF motor has to be increased in output to. kw if it has to operate at 0 metres above mean sea level. Pump location The Pumps have been designed to operate in non aggressive and non explosive atmosphere. The relative humidity should not exceed %. Pumped liquids pumps are designed for non explosive liquids which are clean and thin without any solid particles. For aggressive liquid please ensure that material of construction is suitable for liquid to be pumped. A viscous liquid affects the pump performance in the following ways. The power consumption of the pump will increase with increase in viscosity. This will require a larger motor for the pump. Head, discharge & pump efficiency will reduce. A liquid with high density will also affect the performance as follows. The power consumption will increase at a ratio corresponding to increase in density. For example a liquid with a specific gravity of.0 will require 0% larger motor to drive the pump. The head, discharge and pump efficiency will not change with change in density. Liquid temperature The pump range covers the temperature range from 0 C to +0 C. The permissible liquid temperature depends on the type of mechanical shaft seal furnished on the pump. Please refer the table showing relationship between mechanical shaft seal & temperature. The maximum liquid temperature is stamped on the nameplate of the pump. Relationship between shaft seals and temperature Seal type Temperature Code range Carbon/Ceramic// S.S.0 Sic/Sic/Viton/S.S. Carbon/Sic/Viton/S.S. 0 C to +0 C 0 C to +0 C 0 C to +0 C nlet pressure The inlet pressure + shut off pressure (pressure of pump against closed valve) should not exceed the maximum operating pressure of the pump. The minimum inlet pressure must be according to the NPSH curve + 0. metres safety margin + correction of vapour pressure.

11 Motor electrical data Eff /standard efficiency, pole P [kw] P [H.P] n [min ¹] V [%] l [A] at / Cos Ø / V 0 V 0 V Frame size Voltage start / M 0M 0M 0L L L L M M S M S M M L xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ Eff /standard efficiency, pole Eff /standard efficiency, pole P [kw] P [H.P] n [min ¹] V [%] l [A] at / Cos Ø / V 0 V 0 V Frame size Voltage start / M M S M 0M 0M 0L M L L S M M S M S M L x00 /Y Δ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ P [kw] P [H.P] n [min ¹] V [%] l [A] at / Cos Ø / V 0 V 0 V Frame size Voltage start / M M M M 0M 0L 0L L L M M S M S M xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ xδ

12 Dimensions Bare shaft pumps Type DNs DNd k k v n n n a f h h h s w m m m d l e u t Net weight [kg] Gross weight [kg] Volume m³ Single stage pump Ø/ k k v DNs DNd n n n n h h h a f l w m m m m s e t u d

13 Dimensions Bare shaft pumps k k a f l v DNs h DNd h w u n n s Ø/ h p m m p e d t Two stage pump Type DNs DNd k k v n n p a f h h h s w m m p d l e u t Net weight [kg] Gross weight [kg] Volume m³ , , , , 0,