Main applications chtd
- Boiler feed systems
- Energy
- Power Stations > 100 MW
Technical data
- Q max 3,600.0 m³/h
- H max 5,300.0 m
Design chtd
Horizontal high-pressure barrel-type pumps with radial impellers, single-entry and double-entry, multistage, with flanges or weld end nozzles to DIN and ANSI.
Application pump chtd
Pumping feed water and condensate in power stations and industrial plants, generation of pressurised water for bark peeling and descaling units
Drive pump chtd
Variable-speed condensing turbine
▪ Electric motor with geared variable speed coupling
▪ Electric motor with Vorecon gear
▪ Electric motor with frequency inverter and fixed-ratio gear
▪ Curved tooth and flexible disc couplings, low weight
decisive for rotor dynamics
Desing Details pump chtd
Design
▪ Horizontal installation
▪ Radially split pump
▪ Single-entry or double-entry
▪ Multistage
▪ Profile seals for static sealing within the pump and to atmosphere, stage casings with metal contact faces, Orings for areas in contact with oil
▪ Nozzles always arranged radially
– Nozzles available with weld end or flange
– Positions: suction nozzle/discharge nozzle top or
bottom, or opposite to each other
Tapping nozzle top or bottom, angles 45° and 170°
▪ Sizes and number of stages
– Sizes 3 to 11, selection to flow rate at a nominal
speed of 4060 rpm
– Number of stages: 3 minimum, 9 maximum
▪ Individual support of shrink-fitted impellers and split ring for axial force transmission
Impeller type
▪ Radial impellers
Bearings
Plain bearings with forced oil lubrication
▪ Radial bearing
– 2 grooved multi-lobe plain bearings
▪ Thrust bearing
– 1 bi-directional tilting-pad thrust bearing
▪ Measurement of the residual axial force via wire strain gauges on cardanic ring
▪ Cardanic ring desigend as flexible component, adaptation to rotor deflection line, measurement of residual thrust
Balancing device
▪ Double drum: 2 radial clearances of fixed width and 1 axial clearance of adjustable width
▪ The residual axial thrust is absorbed by the thrust bearing, which forms one functional unit with the double drum.
Overview of technical data chtd
| Q (50Hz) | 0.0 – 3,600.0 (m³/h) |
| H (50Hz) | 0.0 – 5,300.0 (m) |
| Barrel casing | Yes |
| Type of bearing | Plain bearings |
| Casing partition | Radially split |
| Drive frequency | 50 Hz /60 Hz |
| Type of drive | Electric motor, turbine |
| Drive voltage | Low voltage, high voltage |
| Type of first impeller | Single entry / Double entry |
| No. of impeller entries | Single / Double entry |
| Other impeller types | Closed / Radial |
| Type of installation | Long-coupled |
| Type of coupling | Geared variable speed coupling, Gear, Variable speed coupling, Direct |
| Type of lubrication | Pressurized oil lubrication |
| Max. permissible fluid temperature | 210.0 (°C) |
| Nozzle position | Variable |
| Pump set location | Dry installed |
| Suction characteristics | Non-priming |
| Type of connection | Flange, weld ends |
| Type of discharge casing | Annular casing / discharge volute |
| Type of stage casing | Stage casing with diffuser |
| Type of suction casing | Annular casing |
| eClass assignment | 36410101, 36410000, 36410100, 36410104 |
| Installation position | Horizontal |
| Shaft seal type | Mechanical seal, Floating seal |
| Main applications | Energy, Industry and process engineering |
| Casing material | Chrome steel, Carbon steel |
| Maximum discharge-side pressure | 560.0 (bar) |
| Maximum suction pressure | 40.0 (bar) |
| Maximum drive rating | 40000.0 (kW) |
| Type of installation | Stationary |
