Post on 20-Oct-2019
transcript
#WATEFCON 2018
Water Efficiency Conference5-7 September 2018University of Aveiro, Portugal
PaTPump as Turbine
KSB Bombas e Válvulas
Nuno Aleixo
#WATEFCon 2018
PaT - Application
#WATEFCon 2018
Advantage PaT over turbine
– Standardised product
– Short delivery
– Low-prised
– Can be used as pump as well with high efficiency
PaT vs Turbine
#WATEFCon 2018
Advantage turbine over PaT
– Wide range of control
– Accurate design
– Higher efficiency
PaT - Operating Range
#WATEFCon 2018
PaT / Pump: Operation
#WATEFCon 2018
PumpPlease note:
– Mechanical seals to be independent
on sense of rotation
– Impeller nut retention
Sectional view Pump / Turbine
+H
+Q
+n
- Q
- n
Turbine
+P
- P
+H
Ppe
Ppe.const
HQP
.const
HQP Turb
Turb
PaT / Pump: Operation
#WATEFCon 2018
Ppe
Ppe.const
HQP
.const
HQP Turb
Turb
0.0
0.5
1.0
1.5
2.0
2.5
3.0
-2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0
H / Hopt
Q / Qopt
M = 0
n = 0
1800 min-1
1500 min-1
-1500 min-1
-1800 min-1
Pump nS 25,9Turbine ns 25,4
PaT – KSB Power House
#WATEFCon 2018
PaT – KSB Power House
#WATEFCon 2018
PaT for water pumping
#WATEFCon 2018
PaT – for water pumping
#WATEFCon 2018
Pump – gear box – PaT
– PaT: Eta R 300-340
Q = 370 l/s; H = 15 m; = 81%
– Pump: Multitec 65/9-6.1
Q = 16 l/s; H = 190 m; = 74%
Pump as Turbine (PaT) and pump directly coupled via gear
Dam wall
Upstream
Downstream
PaT – Simplified Scheme Bypass
#WATEFCon 2018
Application of PaT
Scheme with bypass
(1) Flow measurement
(2) Control valve
(3) Isolation valve
(4) Pump as Turbine
(5) Start / Stop / Control valve
(6) Generator
(7) Bypass, rapidly opening valve
(8) Pressure measurement
M Pl
M
1 2
3
45
3
6
7
T
G
8
PaT – Pump as Turbine
#WATEFCon 2018
Thank You