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Archive for September 2013

KSB Amacan K - Submersible motor pump with non-clogging impeller

 

 

Design

KSB-Amacan K-ModularKSB Amacan K – Wet-installed submersible motor pump with non-clogging impeller, singlestage, single-entry, for installation in discharge tubes, explosion protection to ATEX II G2 T3.

 

 

 

 

 

 

 

 

 

Applications

Handling of pre-cleaned, chemically neutral waste water, industrial effluents and sewage, fluids not containing any stringy substances pre-treated by screens and sills, as waste water, mixed water and activated sludge pump in effluent treatment plants, irrigation and drainage pumping systems.

Function

KSB-Amacan K-instThe fluid enters the pump axially via the inlet of the pump casing (1) and is
accelerated outward in a radial flow by the rotating impeller (2). The required energy
is transmitted from the electric motor (7) to the impeller (2) via the shaft (4). In the
pump casing (11) the kinetic energy of the fluid is converted into pressure energy.
The rotational movement diverts the fluid flow in axial direction. The casing wear
ring (12) prevents any fluid from flowing back from the casing into the inlet of the
pump casing. At the rear side of the impeller, the shaft enters the casing via the
discharge cover (3). The shaft passage through the discharge cover is sealed towards
the fluid by a shaft seal (10). The shaft runs in rolling element bearings (5 and 8),
which are supported by a bearing housing (9) and a bearing bracket (6).

 

 

Standard

KSB-Amacan K-Diagram Temperature monitoring of the motor
▪ Temperature monitoring at the lower bearing
▪ Leakage monitoring of the mechanical seal system
▪ Leakage sensors in the motor/connection space

 

 

 

 

 Flamepaths for explosion-proof motors

KSB-Amacan K-Explosion proof

 

 

 

 

 

 

 

 

 

 

Overview of technical data

Type of bearing Rolling element bearings
Casing partition Radially split
Drive Electric motor
Drive frequency 50 Hz / 60 Hz
Type of drive Electric motor
Drive voltage Low voltage
Connection to power supply 380 V, 400 V, 690 V, 3~
Explosion protection ATEX II 2G T3
No. of impeller entries Single entry
Impeller material (EN standard) 9. 4460;JL 1040
Type of installation Close- coupled
Type of coupling None
Type of lubrication Grease lubrication
Max. permissible fluid temperature 40 °C
Nozzle position In- line
Pump set location Wet well
Shaft material (EN standard) 1. 4021QT700;C45+N;1.4057
Suction characteristics Non- priming
Type of casing Tubular casing
Type of impeller Multi- vane impeller;Radial;Closed
Casing material (EN standard) JL 1040
eClass assignment 36410103; 36410100;36410000
Free passage 180 mm
Maximum head 30, 00 m
Minimum head 1, 00 m
Installation position Vertical
Shaft seal type Mechanical seal
Main applications Water; Waste water / sewage;Mining / Dredges
Casing material Cast iron
Maximum drive rating 320 kW
Type of installation Stationary
Maximum flow rate 7. 200 m³/h
Minimum flow rate 140 m³/h
Maximum speed of rotation 1. 200 1/min

 

EBARA              GRUNDFOS               KSB              WILO             TSURUMI

Wilo-EMU 6" For potable water supply / general water supply from boreholes and rainwater storage

 

 

Design

Wilo Emu 6″ Submersible pump in sectional construction

Wilo-EMU_6-Vic

Description/design

Submersible-motor pump for vertical or horizontal installation.

 

Hydraulics

Multistage submersible-motor pump with radial hydraulics. Housing parts made of NiAl‐Bz, impellers made of Noryl. Pressure connection as threaded connection, with integrated non-return valve.

 

Motor

Three-phase motor for direct and star-delta start Sealed, hermetically cast motor with enamel-insulated winding, resin-impregnated (NU 4…, NU 5…) or rewindable motor with PVC‐insulated winding (NU 611). Motor shroud made of stainless steel, A2/A4 quality.

Pump connection as standard NEMA connection. Sealing of motor shaft achieved through the use of a rotary shaft seal (NU 4…) or mechanical seal made of solid silicon carbide material.

Self-lubricating motor bearing. Motors in the NU 4…- and NU 5… series are filled with a water‐glycol mixture, motors in the NU 611 series are filled with a water-glycerine mixture. Alternatively, NU 611… series motors can be filled with potable water (T‐version). Frequency converter operation is permitted (SF 1.1).

 

Cooling

The motor is cooled by the fluid. The motor must always be operated in submerged state. The limit values for the max. fluid temperature and the minimum flow rate must not be exceeded. Vertical installation is possible optionally with or without cooling jacket. For horizontal installation, bearing brackets must be used for reinforcement of the unit. A cooling jacket may be used to improve the inlet flow.

 

Pressure shroud

The pressure shroud is used for direct installation of the unit in the pipe system. Standard models are without mounted non-return valves. The maximum inlet pressure is 10 bar.

 

Application

  • Wilo-EMU_6-AppupFor potable water supply / general water supply from boreholes and rainwater storage
  • Process water supply
  • Municipal water supply
  • Sprinkling and irrigation
  • Pressure boosting
  • Pumping water in industrial applications and water control
  • Operation of fountains
  • For pumping water without long-fibre and abrasive constituents

 

 

 

 

 

Type key

Example: Wilo-EMU NK 63-17 + NU 611-2/15
Hydraulics: NK 63-17
NK Hydraulics
6 Diameter of the hydraulic unit in inches [“]
3 Size
17 Number of hydraulic stages
Motor: NU 611-2/15
NU Submersible motor
611 Size (4… = 4″, 5…, 611 = 6″)
2 Number of poles
15 nominal power

 

Special features/product advantages

  • Wilo-EMU_6-AppPumping water from great depths
  • Corrosion-free and wear-resistant due to housing made of NiAl‐Bz and impellers made of Noryl
  • Integrated non-return valve
  • Cast and rewindable motors
  • Vertical and horizontal installation possible (depending on the number of stages)

 

Technical data

  • Mains connection: 3~400 V, 50 Hz
  • Immersed operating mode: S1
  • Max. fluid temperature: 30 °C, higher temperatures on request
  • Minimum motor flow:
    • NU 4… = 0.1 m/s
    • NU 5… = 0.16 m/s
    • NU 6… = 0.1 ‐ 0.5 m/s
  • Max. sand content: 35 g/m3
  • Max. number of starts: 20/h
  • Max. immersion depth:
    • NU 4…, NU 5…= 350 m
    • NU 611 = 100 m
  • MEI classification:
    • NK 62 = >0.4
    • NK 63 = >0.7
    • NK 64 = >0.1
  • Protection class: IP 68
  • Control range for frequency converter: 30-50 Hz

 

Equipment/function

  • Wilo-EMU_6-Curve
  • Multistage submersible-motor pump with radial impellers
  • Hydraulics and motor freely configurable according to power requirements
  • Integrated non-return valve
  • NEMA coupling
  • Three-phase motor for direct or star-delta starting
  • Hermetically cast motors
  • Rewindable motors

 

 

EBARA            GRUNDFOS             KSB            WILO           TSURUMI

Wilo-COE-2 MHIL BC Fully automatic water supply and pressure boosting in residential building

 

 

Design

Ready for connection, non self-priming water-supply unit with 2 parallel-switched, horizontally arranged high-pressure multistage centrifugal pumps with fixed speed in glanded design of the MHIL series, equipped with BC switchgear.

Wilo-COE-2 MHIL BC

Application

  • Fully automatic water supply and pressure boosting in residential buildings and small commercial locations.
  • Pumping of potable water and clean process water and other water mixtures that do not chemically or mechanically attack the materials used and do not contain any abrasive or long-fibre constituents

 

 

 

 

Type key

e.g.: Wilo-COE-2MHIL305-DM/BC
COE Compact pressure boosting system
2 Number of pumps
MHIL Pump series
3 Rated volume flow [m3/h]
05 Number of pump stages
DM 3~ (EM: 1~)
BC Switchgear

 

Special features/product advantages

  • System with high-pressure multistage centrifugal pump of the MHIL series made of grey cast iron and stainless steel
  • Hydraulics made of stainless steel in combination with IE2 standard motors for 3~ motors from 0.75 kW and IE1 motor for 1~ motors
  • Two horizontally aligned high-pressure multistage centrifugal pumps of the MHIL series switched in parallel, for flow rates of up to 16 m3/h and delivery heads of up to 55 m
  • “BC” switchgear: operationally necessary functions are ensured by the electronic speed control technology used. The switchgear is accommodated in a plastic cabinet. Starting/stopping the pumps with a pressure switch; low-water cut-out switchgear, motor protection, pump cycling, stop delay of the pumps. An LED display provides information on alarms and pump operation and provides switches for the selection of the operating mode.

 

Technical data

  • Mains connection 3~400 V, 50 Hz or 1~230 V, 50 Hz
  • IE2 standard motor for 3~ from 0.75 kW (for 1~ : IE1 standard motor)
  • Fuse A, AC 3 on mains side according to motor power and EVU regulations
  • Max. fluid temperature of +50 °C (+70 °C optional)
  • Operating pressure 10 bar
  • Inlet pressure 6 bar
  • R2” nominal connection diameter
  • Protection class: IP 54

 

Equipment/function

  • Two pumps of the MHIL 3 to MHIL 5 series per system with an IE2 standard motor for 3~ motors and IE1 for 1~ motors
  • Automatic pump control with BC switchgear specially for the pump management with fixed speed
  • Components that come in contact with the fluid are corrosion resistant.
  • Base frame made of galvanised steel
  • Pipework made of galvanised steel
  • Stop valve on the suction and pressure side of each pump
  • Non-return valve on the pressure side of each pump
  • Pressure switch on the pressure side
  • Pressure gauge on the pressure side
  • Optional low-water cut-out switchgear on the suction side

 

Description/design

  • Wilo-COE-2 MHIL BC-DIMBase frame: made of galvanised steel, to be fastened to a concrete foundation
  • Pipework: Complete pipework of stainless steel, suitable for the connection of all standard pipe materials; the pipework is designed according to the hydraulic output of the pressure boosting system.
  • Pumps: Two pumps of the MHIL 3 to MHIL 5 series switched in parallel; all pump components that come in contact with the fluid are made of stainless steel/cataphoretic-coated grey cast iron. KTW/WRAS approval for all components that come in contact with the fluid. More information on the pumps can be found in the “Pressure boosting” chapter.
  • Valves: Each pump is equipped with an ACS-tested ball shut-off valve on the suction and pressure side and with a KTW-tested non-return valve on the pressure side.
  • Diaphragm pressure vessel: A diaphragm pressure vessel is to be designed and installed according to the installation situation.
  • Pressure sensor: A pressure sensor is installed and connected to the BC switchgear on the pressure side of each pump.
  • Pressure indication: On the pressure gauge on the pressure side
  • Switchgear: The system is standard-equipped with a BC switchgear.

 

Materials

For the MHIL 3 and MHIL 5 series:

  • Impellers, diffusors, stage housing made of stainless steel 1.4301
  • Pump housing made of cataphoretic-coated grey cast iron EN- GJL 250
  • Shaft made of stainless steel 1.4028
  • O-ring seals made of EPDM

More information on the pumps can be found in the “Pressure boosting” chapter.

Wilo-COE-2 MHIL BC-Curve

Scope of delivery

  • Factory-mounted, ready for connection pressure boosting system checked for functionality and impermeability
  • Packaging
  • Installation and operating instructions

 

Planning guide

Pressure reducer

Excessively high or strongly fluctuating inlet pressure requires the installation of a pressure reducer to maintain a constant minimum inlet pressure level. The maximum permissible fluctuation of the inlet pressure is 1.0 bar.

Volume flow

Up to 8 m3/h (111 l/s) system configuration according to DIN 1988 (EN 806); with standby pump up to 16 m3/h (133 l/s), with the standby pumps used for the peak-load operation.

Inlet pressure

The maximum inlet pressure (see Technical data) is to be observed for the system configuration. The maximum inlet pressure is calculated from the maximum unit working pressure minus the maximum pump delivery head at Q = 0.

Low-water cut-out switchgear (WMS)

According to DIN 1988 (EN 806), the installation of a low-water cut-out switchgear is required if the pressure boosting systems are connected directly to a public mains power supply; this prevents the inlet pressure in the mains supply line from dropping to values below 1.0 bar.

Standards/directives

The overall system meets the requirements of the following standards and guidelines:

  • EN2006/42/EC
  • EN2004/108/EC
  • CEM 2004/108/EC

The requirements of the standard EN 806 and those of water supply companies must be met with regard to the electrical components.

The requirements of DIN 1988 (EN 806) are to be observed whenever the pressure boosting system is used or operated.

 

 

EBARA            GRUNDFOS             KSB            WILO           TSURUMI

Grundfos-SE 1.1-11 kW Wastewater, sewage, utility and industrial applications

 

Overview

Grundfos-SE1-modularThe SE range of pumps is built for years of trouble-free operation. The SE range can operate submerged or dry-installed without motor cooling, and is extremely reliable and very easy to service. The pumps can be permanently installed using an auto-coupling guide-rail system or a fixed pipe connection; the pumps are also suitable for freestanding installation or for use as portable utility pumps.

The pumps are available with SuperVortex impellers (SEV) for applications with required low operating hours, dry matter content above 5 %, and a spherical free passage up to 100 mm, or with the S-tube impeller (SE1) for applications with required high operating hours, dry matter content up to 3 %, and a spherical free passage up to 100 mm.

The S-tube impeller is the only impeller on the market designed to cope with the challenges of modern wastewater with varying dry matter content. The simple and robust design of the S-tube impeller offers world class hydraulic efficiency without compromising free passage.

 

 

Applications

The SE range of pumps handles wastewater, process water and unscreened raw sewage in heavy-duty municipal, utility and industrial applications and is ideal for large flows.

A number of material variants are available for SE pumps, from variants with a stainless steel impeller to stainless steel variants for aggressive environments, meeting the standards EN 1.4408 and EN 1.4517/1.4539.

grundfos-SE1-Curves

 

Features and benefits

 

  • High motor efficiency for substantial energy and cost savings.
  • Intelligent adaptive controls ensure reliable operation with low energy consumption.
  • Integrated analogue sensors offer complete monitoring of pump condition.
  • Lifting handle designed for optimum point-of-balance and correct lifting.
  • Smooth, easy-to-clean surface is extremely robust and impact-resistant.
  • One cable to the pump, simplifying pump installation, commissioning and maintenance.
  • Moisture-proof connector plug ensures that liquid cannot penetrate into the motor.
  • Patented SmartSeal auto-coupling gasket provides a completely leak-proof connection.
  • Easy-to-open clamp for the quick and easy disassembly of pump from motor unit.
  • Double mechanical shaft seal ensures longer operation time with less downtime.
  • Short rotor shaft reduces vibrations to protect shaft seals and bearings.
  • Liquidless motor cooling for continuous operation, even in dry installations.
  • Choice of SuperVortex or S-tube impeller.
  • Replaceable wear ring to return the pump to full efficiency.

 

EBARA            GRUNDFOS             KSB            WILO           TSURUMI

KSB-KWP-Bloc Horizontal, radially split volute casing pump with various impeller types

 

 

Design

KSB-KWP-Bloc Horizontal, radially split volute casing pump with various impeller types

Horizontal, radially split volute casing pump in closecoupled design, single-stage, single-entry, available with various impeller types: non-clogging impeller and free-flow impeller.

The hydraulic system and the motor are firmly connected and form a close-coupled
unit. Impeller (7) and motor (10) are arranged on a common shaft (5)

KSB-KWP-Curves

Applications

Handling of pre-treated sewage, waste water, all types of slurries without stringy substances and pulps up to 5 % bone dry with a maximum density of 1.1 kg/dm3.

 

 

 

 

Function

The steadily rotating impeller (7) of the centrifugal pump transfers mechanical
energy to the fluid passing through.

KSB-KWP-Bloc-ModularThe fluid enters the pump axially via a suction nozzle (6) and is accelerated outward
in a cylindrical flow by the rotating impeller (7). The flow profile of the pump casing
converts the kinetic energy of the fluid into pressure energy. The fluid leaves the
pump via the discharge nozzle (2).
The casing is fitted with a replaceable wear plate (1). The diagonal clearance gap
prevents frequent deviation of the flow in the clearance gap heading in the direction
of the suction nozzle. This ensures a longer service life if solids-laden fluids are
handled.
The casing is closed by a discharge cover (3). The shaft (5) enters the casing via this
discharge cover. A shaft seal (8) provides reliable sealing towards the atmosphere.
The shaft is supported by oil-lubricated rolling element bearings (9). The motor (10) is
connected to the casing via an intermediate lantern (4)

 

 

Overview of technical data

Type of bearing Rolling element bearings
Casing partition Radially split
Drive frequency 50 Hz / 60 Hz
Type of drive Electric motor
Drive voltage Low voltage
No. of impeller entries Single entry
Impeller material (EN standard) ERN; NORIDUR 1.4593
Type of installation Close- coupled
Type of coupling Direct
Type of lubrication Grease lubrication
Max. permissible fluid temperature 100 °C
Nozzle position End suction
Maximum rated pressure (discharge) PN 10
Pull-out design Yes
Pump set location Dry installed
Shaft material (EN standard) 1. 4021;1.4462
Suction characteristics Non- priming
Type of casing Volute casing
Type of impeller Closed; Multi-vane impeller;Free flow impeller;Radial
Type of connection Flange
Casing material (EN standard) NORIDUR 1. 4593;JL 1040
eClass assignment 36410000; 36410100;36410103;36410101
Free passage 70 mm
Maximum head 100, 00 m
Minimum head 2, 00 m
Installation position Horizontal or vertical
Shaft seal type Mechanical seal
Main applications Industry and process engineering
Casing material Duplex steel; Cast iron
Maximum discharge-side pressure 10 bar
Maximum drive rating 22 kW
Type of installation Stationary
Maximum flow rate 330 m³/h
Minimum flow rate 4 m³/h
Maximum speed of rotation 3. 500 1/min

 

EBARA            GRUNDFOS             KSB            WILO           TSURUMI