力士乐泵资料[研究材料]

Slit in longitudinal direction: orifice opened
Slit in cross direction
: orifice closed, SO 74)
A10V(S)O Pressure/Flow control DFR(1) Measurement of high pressure
b
220 210 200 190 180 170 160 150 140 130 120 110 100
90 80 70 60 50 40 30 20 10
0
A 10 VO 74 High pressure: p HD
Delta p - Verhalten
Grundeinstellung Standby = 20bar
220 210 200 190 180 170 160 150 140 130 120 110 100
90 80 70 60 50 40 30 20 10
0 0
Dp = 15 bar
25
50
75
Simulated load pressure: p X
A10 VO 74 DFR(1)
Mode of experimental procedure:
DFR with decompression orifice:
(DFR: Standard: 0,35 mm) (DFR1: closed, without drilling)
X
FR
FR - axis
DR
DR - axis
Damping orifice DR - FR
(Standard: 0,6 mm,
Orifice res. Mobile LS - pilot pressure valve block
DR - axis FR - axis
X
X
FR DR
A10V(S)O Pressure/Flow control DFR(1) Dp - control characteristic f (x) = (px, Vg)
Flow control FR
(Dp = 10 - 22 bar)
Standard setting: Dp = 14 bar
X - Pilot pressure port
Suction port S
A10V(S)O Pressure/Flow control DFR(1) Circuit diagram
Attention:
The mini - measurement connection have to be shortened according to the original lenght of the plug (reach of a screw 7 mm).
Measurement high pressure:
Adjustable orifice, res. Mobile valve block (not included in supply)
FR
DR
X - port Flow control (Standard: Dp = 14 bar);
Decompression orifice
Pressure port
Adjustment of pressure control
Adjustment of flow control:
„Stand - by“ pressure measurement
or
Differential pressure measurement with swivel angle !
Valve axis: Pressure control
Valve axis: Flow control
A10V(S)O Pressure/Flow control DFR(1) Adjustment of pressure control DR
Procedure: FR - flow control blocked ! High pressure line closed ! Adjusting of DR pressure control
Damping orifice
Control piston
(Circuit diagram
viewed for A10VO,
series 31)
Counter balance piston and mechanical spring
A10V(S)O Pressure/Flow control DFR(1) Function and circuit diagram
with setting value !
Measuring - point 1: High pressure (measurable at plug of DR valve axis)
Adjustment DR : each rotation app. 50 bar !
- 50 bar + 50 bar
A10V(S)O Pressure/Flow control DFR(1) Ports
Pressure port B Case drain port L
(viewed A10VO, BR 31, clockwise)
Pressຫໍສະໝຸດ Baidure control DR
Standard setting:
A10VODFR/31: 280 bar A10VODFR/52: 250 bar
At this particular spot, the existing plugs (M8 x 1) can be replaced by mini measurement connections
A10V(S)O Pressure/Flow control DFR(1) Adjustment for pressure- res. flow control
pHD
X DFR1
n = 1500 rpm Dp = 15 bar Stand by = 20 bar
px
100
125
F鰎dermenge in l/min
A10V(S)O Pressure/Flow control DFR(1) Decompression orifice and damping orifice