Story of 3 R s. Pum pen Intel 1 ligen z

Transcription

1 Story of 3 R s Pum pen Intel 1 ligen z

2 Various Standard for End Suction Pumps Pum pen Intel 2 ligen z

3 Comparison of ET & NL Options ET NL MoC Beyond Cat A & B Yes No MoC Variants within Cat A & B Yes No Vertical Execution Yes No SemiOpen Design Yes No Inspection/Witnessing Yes No Quality Assurance Plan Yes No Fire duties Yes No Mech Seal variant Optional standard Oil Lubrication Optional No Shaft Groups 4 sizes 3 sizes Temperature range 110 deg.c 120 deg.c 3

4 NL End Suction Back Pull Out Pumps Horizontal Radially split Single stage Single entry, Volute casing Radial impeller Back pull out design Conforming to EN 733.

5 EN 733 & ISO 2858 EN 733 : European standard EN 733 needs lesser space important for Building Service Shaft Group F as per EN F as per ISO 2858 f Proven Bearing design to withstand even C 5

6 Designation Norm pump code Ø Discharge side (mm) Ø max. Impeller (mm) Hydraulic version Motor power (Kw) No. of poles Construction Variant Technical definition code Index of technical evolution NL B XX B

7 Applications HVAC NL Typical Applications Industry Water supply Fire protection Biotech and Pharma

8 Operating Parameters Pump Delivery Size DN mm Capacity Q up to 600 m³/hr Head H up to 150 m End Pressure P up to 16 bar Operating temp. T -20 C up to 120 C Max. Suction Pressure 10 bar Operation Zone (Continuous operation) Size of the pump 0.3 Qopt < Q < 1,1 Qopt to , to , to to Qopt < Q < 1,1 Qopt to to ,

9 Family Curve 1450 rpm

10 Family Curve 2900 rpm

11 Essential Parameters for Pump Selection Capacity Q = m³/hr Total Head H = m (water column) NPSHa = m (water column) Pumped liquid temperature T = C Density ρ = kg/dm³ Drive unit speed n = rpm Maximum discharge pressure P = bar Pump Selection to be done as per the individual performance curves for finalization taking into consideration the above factors. The NPSH values given in individual characteristic curves are the minimum values which correspond to cavitation limits & are valid for water without gases. The individual curves are for nominal speed & selection should be corrected based on effective speed of the drive unit. NPSHavailable must be more than NPSH required by atleast 0.5m.

12 Selection Guidelines - Individual curve 1> The pump curves indicate differential pressure head generated at the given impeller diameter. For operating points following in between two curves, the diameter should be calculated suitably. 2> The model wise limitations of the flow (Qmin & Qmax) must be taken care while selecting the pumps. As a good engineering practice, the selection should be closer to Qopt to have the minimum bkw. 3> The NPSH values given in pump curves are the minimum values which correspond to cavitation limits & are valid for water without gases. NPSHavailable must be more than NPSH required by at least 0.5m 3> Pump curves are for nominal speed & selection should be corrected based on effective speed of the drive unit. 4> Pump curves are valid for water (Density equal to 1.0 kg/dm³). For other liquids proper care should be taken to arrive at the power required.

13 Product Sizes at a glance DN / Impeller Dia Shaft Group

14 Design Features 1> Bearings : Deep groove ball bearing packed with grease for life time of bearing Only three shaft groups covering all sizes. 2> Flanges : Flange drilling confirms to DIN 2533 PN16 3> Pump performance : The values of tolerance factors for pump performance are as per ISO 9906 grade II. 4> Pressure rating Shaft Group Bearing Size Z C Z C Z C3 The entire range is suitable for PN16

15 Design Features 5> Painting : In WILO Green as a standard. Painting as per internal Standards. However customized painting can be offered at extra costs. 6> Construction Features Reduced shaft deflection (compliance with ISO 5199) Oversized bearings Improved lubrication and cooling of seal through conical seal chamber and vortex breaking ribs Improved hydraulic efficiency. 6> Recommended Power Reserve : bkw (%) Power Reserve. Up to 10 kw 15% Above 10 kw 10%

16 Design Features Shaft Sealing : Gland packing Shaft sealing can be done either by gland packing or mechanical seal. Dimensions in Shaft mm Packing size Group d1 D1 a mm qty x8 3 nos lantern 10x ring D1 d1 a

17 Design Features Shaft Sealing : Mechanical Seal Shaft sealing by Mechanical seal : make Burgmann Type : MG12 AQ1EGG Dimension L1k of the standard ISO24960 in the diameter 24, 32 and 45. Øs a l 1k l

18 Material Combinations Standard material Combinations offered : PART NO. PART NAME 10.2 Volute Casing 16.1 Casing Cover MATERIAL EXECUTION C.I. 21 Shaft STAINLESS STEEL 23 Impeller C.I. CI BR BR Bearing Bracket C.I Mech. Seal Sleeve STAINLESS STEEL 52.3 Shaft Seal Stuffing Box Casing Back Cover ACRYL FIBRE ARAMID FIBRE WITH NBR BINDER 67.2 Casing Plug EPDM 43.3 Mechanical Seal EPDM EPDM Gland Packing ROUGHED COTTON ROUGHED COTTON

19 Accessories Standard Accessories that can be supplied along with the pump 1> Coupling 2> Coupling Guard 3> Baseplate with Foundation Bolt 4> Prime Mover-Electric Motor/ Diesel Engine Couplings The coupling between pump and prime mover can be either flexible or spacer type. For ease of maintenance and to take advantage of back pull out feature of the pump, spacer type coupling is recommended. Prime Mover Prime mover to be used is electric motor as standard. Steam turbine or an I.C. engines can be used upon request.

20 Auxiliary Connections Um1: Pressure gauge. Only available on request. Um2: Pressure gauge. Only available on request. UAL: Drainage for leakage. Us: Sensor Ue: Drainage

21 Pump Dimensions

22 Pump Dimensions

23 Sectional Drawing List Of Components Volute Casing Casing Cover Support Foot Shaft Impeller Ball Bearing Bearing Bkt Mech. Seal Stuffing Box Shaft Sleeve (Stuffing Box)

24 Pump Motor Matrix 2900 rpm

25 Pump Motor Matrix 1450 rpm

26 Forces & Moments 26

27 Noise Level The noise levels of the pump comply with the Directive 001/ of the EUROPUMP Commission. The following table provides approximate values:. Notes : Additional noise can be generated by: The driver. A possible misalignment of the coupling. Pipework (The larger the pipe diameter, the lower the pipe noise.) 27

28 What s new? 28

29 Innovative Coupling guards Grooves for 2 fonctions : Cutting guide for lengh ajustment Cover fixation for smallest motor Cover 29

30 30 Confined Gasket for better sealing

31 Increased life of Mechanical Seal Conical seal chamber Avoids vortex formation Reduces the possibility of pressure drop in Mech seal area Anti-Rotation rib 31

32 Features Flanges machined to DIN Std Less complex design requires fewer parts, resulting in faster delivery and easier maintenance Small number of bearing brackets, each equipped with connections for SPM vibration and temperature sensors High quality construction Confined gasket enclosed between cover and casing, preventing leakage Ball bearings type 2Z (greased for life), oversized, maintenance free with V seal

33 Features Axial thrust lower than other makes so longer MTBF. Improved hydraulics for higher flow rates and better efficiencies, giving savings in operating costs. Shaft deflection meets ISO 5199 thereby extending seal and bearings life. Less vibration for an extended life time with ISO 5199 norm Special sealing rings, closed at standstill (prevent water ingress into bearings during cleaning operations), open when running (reducing friction).

34 Features Seal chamber provided with anti - rotation ribs for best seal performance and longer operating life. High grade of finishing No shaft sleeve used for mechanical seal option. Avoids danger of leakage between shaft and sleeve. Pump with soft packing equipped with shaft sleeve for low cost maintenance Enhanced safety by using precision moulded protective covers. Mechanical seal standards: Burgmann MG12

35 NL & KSB 1450 RPM KSB MEGA NL

36 NL & KSB 2900 RPM KSB MEGA NL

37 NL & KBL 2900 RPM KBL DB NL

38 NL & KBL 1450 RPM KBL DB NL

39 NL & 2900 RPM ET 2900 NL

40 NL & 1450 RPM ET 1500 NL