Magnetpumpen_2010_ENG1_5

Paul Bungartz GmbH & Co KG Düsseldorfer Str. 79 40545 Düsseldorf Tel.: ++49(0)211/577905-0 Fax.: -12 www.bungartz.de

special centrifugal pumps

usable for difficult applications - liquids with gas / steam contents - solid containing liquids - high fluid temperatures

able to operate at zero flow - draining / stripping of pipes, tanks - tanker unloading

in self-regulating design also usable for - liquids close to the boiling point (liquid gases) - delivery out of vacuum with low suction liquid level

BUNGARTZ mag drive pumps


Pumps with magnetic drive

special centrifugal pumps

• MPVAN with slide bearings for clean liquids

• MPCVAN, MPATAN with dry running magnetic drive an ball bearings for solid containing liquids

• MPCH horicontal pump with dry running magnetic drive for solid containing liquids



Type MPVAN

vertical pump with slide bearings

for tanker unloading


cooling flow:dependent of:

- Pressure difference = pd - ps

Eddy Current losses P W

Hydraulic losse PV = P ( 1 – Eta ) + PV(MK)

Taus = TS + (PW + PV) / Qmin / CM = Tein coupling

Cm (spezific heat J / kg °K),

Qmin (Massflow kg / s)

TS (Pump inlett temperatur °C)

MPVAN magnetic drive with slide bearings

discharge pressure

pd

cooling flow

ps suction pressure


pump MPVAN

PD

PSLiquid ring

No flow !

Safe to run at zero flow.

Static pressure at zero flow

pump is able to run at zero flow withpd – ps > 1 bar

Seal expeller Gas balance line



tanker unloading from bottom outletTankwa~1.exe

large volume for

start up without venting


pumps with magnetic drive

Type: MPVAN tanker unloading

applications

• complete transportable unit (FSV)

• automatic venting of pump and delivery system

• complete draining of tanker and pipe


Pumps with magnetic drivetanker unloading from top outlet

Tankwa~1.exe

Back flow volume

Gas balance line

Start up volume


Pumps with magnetic drive tanker unloading from top outlet

maximum suction lift in dependence on the liquid density



Type MPCV(AN)

vertical pump with dry running magnetic drive

for solid containing liquids



Type: MPCV(AN)

• dry running mag drive and bearing area

• balance nozzle for gas separation on request

• dry Operation without any liquid is allowed

• working at zero flow over long time is allowed in self-regulating design (AN)

for liquids containing solids

gas area at all operating conditions



shaft seal with nitrogen flushingused for pump types MPCV , MPCT or MPCH

grease lubricated bearings

lip seal

barrier gas inlet

gas area at alloperating conditions



Type MPAT(AN)

vertical submerged pump with dry running magnetic drive

for installation in vessels and pits



Type: MPAT

submerged pump

• bearings are not in contact with the pumped liquid

• magnetic drive run independent of the pumped liquid

• self – regulating design is possible

• able to run completely dry

Mpat.exe

Gas seal



Type MPCH DryRun

Horizontal pump with dry running magnetic drive

Flange connection according to DIN EN 22858



MPCHDryRun

labyrinth gas barrier

grease lubricated bearings

dry running magnetic drive

barrier gas inlet strong shaft design


MPCHDryRun

P (bar)

Gas flow direction

Barrier gas

Labyrinth

pressure released, frictionlessLip - seal

Liquid - / Solid -separationby centrifugal forces and gas flow


very high safety standard

dry running and pressure released magnetic can

frictionless operating lip seal

pressure released labyrinth seal gas barrier system

MPCHDryRun


MPCHDryRun

Labyrinth temperature

Temperature heating fluid, 160 °C

Bearing temperatur motor side

Barier gas

Product

Heating fluid

Bearing Temperatue

Isolated area

197 °C


MPCHDryRun

Example Liquid melt, PSA with sludge, T = 197 °C

Q = 5 m³/ h, 25 m Fl. S.

DryRun 80/50/315 - OS - H


Temperaturverlauf Gehäusewand und Lagerträger(an den Messbohrungen)

0

50

100

150

200

250

300

350

400

0 100 200 300 400

Abstand von Gehäusewand s (mm)

Te

mp

era

tur

( °C

) Reihe1

Reihe2

Reihe3

Reihe4

Reihe5

MPCHDryRun

Temperature at pump surface

Bearing at pump side, 42 °C

Bearing at motor, 29 °C

Pumping fluid temperature 197 °C

Labyrinth, 86 °C

distance to the casing back side ( mm )


MPCHDryRun

some references

MPCH DryRun

pump size

Pumping fluid Temperatur (°C)

Q (m3 / h)

H (m Fl. S.)

operating timeStand: 02 / 2010

50 / 250 – OS1 (3) pce

TDI with 20% solids 180 °C vacuum 100 mbar abs.

20 55 (2900 1/min)

40 (28) Month

50 / 315 – OS - H1 + (Reserve)

PSA, melt 230 °C steam heated

5 25 (1450 1/min)

38 Month

40 / 315 – OS - H1 (1) pce

Caprolactam 90% 128 °C steam heated

15 35 (1450 1/min)

34 Month

32 / 200 – OS3 pce

ODB with solids 40 °C vacuum 100 mbar abs.

12 40 (2700 1/min an FU)

22 Month

80 / 400 – OS - H3 pce

Adipol-adipinatbei 45 °C wachsartig

200 °C heated 100 35 (1450 1/min)

16 Month

MPCH DryRun = horizontale, trocken laufende Magnetkupplungspumpe, –OS: halboffene Förderschaufeln, -H: heizbare Ausführung (Dampf, Thermoöl)


MPCHDryRun

Energie consumbtion


MPCHDryRun

capacity and head

32 Pump sizes 1 – 700 m3 / h

4 Magnet drives (can diameter 110 – 215 mm up to 1110 Nm)


MPCHDryRun Advantages

• without slide bearings, no eddy current losses

high efficiency the pump is able to run dry over long time

• no wear, bearings and magnetic drive without product contact

gas and solids are permitted

• high safety standard

many fluid barriers (labyrinth seal, lip seal, mag drive)

• all components are able to run dry without time restrictions

dry running protection is not required

Magnetpumpen_2010_ENG1_5

Documents

kg dsseldorfer

pump mkb

motor start

magnetic drive

special centrifugal

14 kg m2

82 kg m2

magnetic drive