ME High Pressure Stage Casing Pump

Transcription

1 Sulzer Pumps ME High Pressure Stage Casing Pump The Heart of Your Process

2 Sulzer Pumps Your Partner for Pumping Solutions Sulzer Pumps is one of the world leaders in state-of-the-art pumping solutions. Combining engineering and application expertise, Sulzer Pumps solutions add value and strengthen the competitive position of its customers. Thanks to a global network of manufacturing facilities, sales offices, service centers and representatives, we are able to provide fast responses to customer needs. ME Global Manufacturing Facility Through its extensive experience in providing innovative solu tions to business partners, Sulzer Pumps is a well-recognized player in the following industries: Oil and Gas Hydrocarbon Processing Pulp and Paper Power Generation Water General Industry Chemical Process Industry Bruchsal, Germany Extensive Knowhow for Many Applications Sulzer Pumps provides pumps suitable for all types of power plants nuclear reactor, fossil fired, combined cycle, concentrated solar, geothermal, large and small industrial power plants. Our portfolio encompasses: Boiler feed pumps for subcritical and supercritical fossil fuel plants Cooling water pumps Condensate extraction pumps Auxiliary services Our focus is to engineer and implement reliable and cost effective pumping solutions to meet the demands of a continuously evolving power generation industry. ME pump 2

3 Designed for High Availability and Efficiency The ME pump is primarily designed for power applications, especially boiler feed in thermal power stations. These pumps are optimized to provide high availability and high efficiency operation over an extended period of time, reducing operation and maintenance costs. The pump s efficiency is a result of its advanced hydraulic design and thus does not rely on the use of close internal clearances. This is also the case for the rotordynamic design, which ensures low vibration by providing a high degree of damping throughout the life of the pump, even with the clearances worn to their maximum values. Although the ME is a well-established design, with many years of reliable operation, it has been continually updated to take advantage of technological developments. These include developments in precision casting, sealing technology and materials as well as the application of Finite Element (FE) analysis and state-of-the-art manufacturing techniques. Wilhelmshaven, Germany ME / 8 stages 1,458 m 3 /h (6,420 3,673 m (12,050 ft) 13,766 kw ( ,237 rpm Lippendorf, Germany ME / 8 stages 1,311 m 3 /h (5,772 3,124 m (10,250 ft) 11,346 kw (15,215 4,970 rpm Pietarsaari, Finland ME / 4 stages 917 m 3 /h (4,038 2,349 m (7,707 ft) 6,298 kw (8,446 5,227 rpm 3

4 ME Design Features and Benefits Balance Drum / Liner Axial thrust compensation by balancing drum/liner Shrunk on with oil press fit to avoid damage during transient conditions Shaft Sealing Optimized design with jacket cooling and mechanical seal (prewarming not required) Seal shaft sleeve fixed with shrink disk Impellers Impellers are shrunk on Use of keys for torque transmission and split ring for axial thrust loading Bearings Fully rated double acting tilting pad thrust bearing with shrunk on thrust collar (oil press fit) Optimized Design Radial grooves increased radial stiffness, reduced effect on rotor tilting and good rotor dynamic behavior Swirl break at balancing piston to maintain rotor stability even when internal clearances are worn Nozzle Top or bottom facing nozzles welded or flanged; can be positioned to suit the planned installation layout Casing Support Centerline mounting 4

5 Branches Optional intermediate take-off possible Suction Double suction first stage available on small size Coupling Shrunk on coupling with oil press fit, parallel stepped or taper fit Bearings Four lobes journal bearing provide high stiffness and damping to minimize shaft movement Wear Rings Optimized labyrinth design for high efficiency and good rotordynamic behavior Integral impeller wear rings for longer life dimensioned to allow re-machining several times Shaft Shaft forged in chrome nickel steel: Low L/D ratio Stable operation without critical speed problems Reduced vibration levels 5

6 ME Features Advantages Rotor Design Advantages: Shrunk on parts allow for high rotor balancing quality Shrunk on parts avoid fretting corrosion and minimize stress concentrations Shrunk on parts avoid loose parts on shaft during operation and result in lower vibration Shrunk on thrust collar, oil press fit Shrunk on balance drum, oil press fit Impellers are shrunk on, have keys for torque transmission and use split ring for thrust loading Shrunk on coupling, oil press fit, parallel stepped or taper fit Rotor Design Diffuser and Impeller Design Advantages: Precision castings - High efficiency - Small hydraulic unbalance Thick impeller shrouds - High strength for high head - Natural frequency away from resonance, thus avoiding shroud breakage Continuous channel diffuser - High efficiency Continuous channel diffuser Diffuser Thick impeller shrouds Impeller Precision castings Impeller and Diffuser Stage 1 Stage 2 Stage 3 Stage 4 Tightening System for Delivery Cover Studs Advantages: Accurate tensioning to required pre-load Set up Tensioning Tool Tension Stud Bolt Turn Nut Release Tensioning Tool Case Bolt Tensioning Tool Pressure Retaining Parts Advantages: Hydro test (1,43 x p D ) of each pressure casing provides high safety Analyzed with proven codes for high reliability: - German vessel code AD, DIN EN ASME section VIII, Division 2, optional Finite Element (FE) for selected cases Finite Element (FE) model 6

7 ME Performance Range Capacity Q(USgpm) Head H(m) 10,000 1,000 10,000 Head H(ft) 10,000 1, ,000 10,000 3 Capacity Q(m /h) Operating Data Metric units U.S. units Pump sizes from to Capacities up to 1,750 m 3 /h up to 7,700 USgpm Heads up to 4,000 m up to 13,120 feet Pressures up to 430 bar up to 6,240 psi Temperatures up to 220 C up to 430 F Speeds 4,000 up to 5,500 rpm Material Selection ME Material Classes Part DIN Material ASTM Material Advantage Discharge Case X3CrNiMo13-4 ASTM A182 Gr F6NM High erosion resistance Good thermal transient properties Impeller G-X4CrNi13-4 A743 Gr CA6NM Diffuser G-X4CrNi13-4 A743 Gr CA6NM Stage Case G-X4CrNi13-4 A487 Gr CA6NM High erosion resistance Good cavitation resistance Suction Case G-X4CrNi13-4 A487 Gr CA6NM Shaft X3CrNiMo13-4 AS A182 Gr F6NM Balance Drum X17CrNi16-2 (soft nitrided) A743 GR CA40 (soft nitrided) Stationary Wear Parts GX120CrMo29-2 A743 GR CA40 High strength High fatigue resistance At least 50 HB hardness difference High erosion resistance Tie Bolts 40CrMoV4-6 A193 GR B16 High strength Static Seals Pure graphite and O-Rings Good pressure resilience 7

8 E10101 en (1,000), Copyright Sulzer Pumps This brochure is a general presentation. It does not provide any warranty or guarantee of any kind. Please, contact us for a description of the warranties and guarantees offered with our products. Directions for use and safety will be given separately. All information herein is subject to change without notice.