Axial piston pump in the long after the work, or improper operation and
maintenance, often occur fault, hengyu hydraulic for you to briefly introduce a
few common axial piston pump fault and cause analysis.
1, the output flow is
not enough or no oil: high suction resistance or suction air; Poor axial force;
Return spring or return disk damaged; There is dirt between the plate and the
cylinder; Damage to plunger or plunger hole; The variable mechanism is not in
the right position; Oil temperature is too high; Poor assembly.
2. No
pressure increase or no pressure increase at all: the above mentioned flow
insufficiency may cause; The variable mechanism is not well adjusted; Other
reasons.
3, pump noise, pressure fluctuations: inhalation of air; Variable
piston motion is not flexible; Triangle groove Angle is too small; The stiffness
of variable mechanism is small; Sliding boots and ball head cooperate loose;
Large leakage of variable mechanism.
4, pump heating, oil temperature rise is
too high: plunger and plunger hole, valve plate and cylinder joint surface wear,
leakage is large; The motion pair in the pump is severely worn and pulled, and
the mechanical efficiency is low. Small eccentric pump or low working pressure;
Large oil viscosity, small tank volume; Bearing wear and transmission
strain.
5. Serious oil leakage (internal and external leakage) in the leaking
pipe: the cylinder body and the distribution plate, the plunger and the plunger
hole are worn; Variable piston wear, resulting in leakage; Joint seal damaged;
The oil seal leaks oil.
6, the pump can not turn: the plunger stuck; Slippery
boots fall off; The ball head is broken; Return disk rupture; The cylinder body
is sintered with the plate;
7. Failure of variable mechanism: The circular
surface of variable head bearing bush is seriously worn; Control oil channel
blockage; The variable Viseca is dead; Control spool spring damage; Variable
mechanism leakage
8. The fitting surface of the distribution plate and the
cylinder body is worn or burned out: the oil is dirty; No oil in the pump when
starting; The distributing disc is not hard enough; The cylinder body is of poor
quality; High temperature and high pressure deformation of distribution plate;
The coaxiality difference between the supporting hole in the pump shell and the
transmission shaft; The fit clearance between cylinder block and bearing is too
large; Transmission shaft spline mating clearance is too small; The distribution
surface of the cylinder block is not perpendicular to the rotation center; Drive
shaft bending; Oil trapped in the transition zone between high and low pressure
of the distribution plate is serious.
9. Wear or burn out of slipper and
swash plate fitting surface: oil pollution; Piston or slipper damping hole plug;
Swash plate hardness or machining accuracy is not enough; The slipper shoulder
thickness is not consistent; The static bearing precision of slipper surface is
not enough; Plunger ball head plane is small
with filter element
The oil filter is equipped with automatic detection function of filter
element pollution degree
Only when we realize the function of transformer oil filter, can we apply it
to real life correctly. The oil filter tells you to know that the transformer
oil filter has super filtration and purification effect, which can extend the
service life of transformer oil.
The first dehydration effect does not need to be emphasized again, because
one of the biggest functions of the transformer oil filter itself is dehydration
effect, and the other is degassing. Dingneng brand new transformer oil vacuum
oil filter has multi-stage design, built-in secondary evaporation interlayer,
and special vacuum packing, which can increase the contact area of oil film and
quickly separate water and gas in oil.
In addition to dehydration and degassing, the transformer oil filter also has the function of removing impurities. The high β value precision filter material of the transformer oil vacuum oil filter adopts multi-stage filtration and step-by-step densification to remove the fine particles in the oil. In the process of filtration and purification, transformer oil filter is equipped with automatic detection function of filter element pollution degree due to its large filter element volume, large pollution capacity and long service life. In the process of using transformer oil filter, it is estimated that the processing personnel can clearly see this point. In addition, many functions of transformer oil filter are expected to be understood thoroughly only by those who really use it.
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