hydraulic training by avinash

7/28/2019 Hydraulic Training by Avinash

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INDUSTRAIL HYDRAULIC

STEEL MILL HYDRAULIC

By :-Mr.R.Sharma

Mr.A.K.Upadhyay


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TOPIC COVER

BASIC OF HYDRULIC

HYDRAULIC ELEMENT

HYDRAULIC CIRCUIT

MAINTENANCE &

TROUBLE SHOOTING


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BASIC OF HYDRAULIC

WHAT IS THE MEAN OF

HYDRAULIC?

-THE TERM HYDRAULICHAS BEENDERIVED FROM2 GREEK WORDS

HYDRO MEANING WATER

AULOS-MEANING PIPE


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BASIC OF HYDR AULIC

PASCALS LAW?

PASCAL WAS A FRENCH SCIENTIST WHODISCOVERED HIS LAW IN THE 17TH CENTURY.

-PRESSURE APPLIED ON A CONFINED FLUID ISTRANSMITTED UNDIMINISHED IN ALLDIRECTIONS AND ACTS WITH EQUAL FORCEON EQUAL AREAS.


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HYDRAULIC POWER TRANSMISSION

1ST SOURCE OF POWER FOR HYDRAULICSYSTEM IS THE PRIME MOVER,WHICH MAY BEAN ELECTRIC MOTOR OR AN ENGINE.

2ND SOURCE IS PUMPWHICH IS WORK AS AINPUT COMPONENT IN HYDRAULIC SYSTEM .

3RD OUTPUT COMPONENT IN A HYDRAULICSYSTEM IS CALLED THE ACTUATOR


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ADVANTAGE OF HYDRAULIC

*VARIABLE SPEEDS

(FLOW CONTROL VALVE)

*HYDRAULIC DRIVES ARE REVERSIBLE

(BY USING D.C.VALVES)

*OVER LOAD PROTECTION

(BY USING PR.RELIEF VALVE)

*COMPACT IN SIZE


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2.HYDRAULICELEMENT

PUMPS

VALVES

ACTUATORS


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PUMPS

NON POSITIVE DISPLACEMENT PUMPS

WHERE THE FLUID CAN BE DISPLACED AND

TRANSFERRED USING THE INERTIA OF THE FLUID IN

MOTION ARE CALLED NON POSITIVE DISPLACEMENT

PUMP

POSITIVE DISPLACEMENT PUMP

P.D.P.ARE THOSE WHOSE PUMPING VOLUME CHANGE

FROM MAXIMUM TO MINIMUM DURING EACH

CYCLE


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POSITIVE DISPLACEMENT PUMP

VANE PUMP

GEAR PUMP

PISTON PUMP


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VANE PUMP


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HYDRAULIC TRAINING


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PRINCIPLE OF PISTON PUMP


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PISTON PUMP


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COMPARISON OF PUMPTYPE VANE PUMP GEAR PUMP PISTON PUMP

WORKING PRINCIPLE VARYING VOLUM

BEEWEEN CAMRING AND

VANE

SHIIFTING VOLUME

SURROUNDED BY GEAR

GROOVES & CASING

VARYING VOLUME BY

RECIPROCATING PISTON

AVERAGE EFFICIENCY HIGH LOW

EXCEPT FOR PR.

LOADING TYPE

JIGHEST AMONG THREE

TYPE

SENSITIVITY TO DUST LESS SENSITIVE

COMPARED TO PISTON

PUMP

LESS SENSITIVE THAN

PISTON PUMP AND VANE

PUMP

MOST SENSITIVE TO DUST

APPLICABILITY OFVARIABLE DISPLACEMENT

TYPE

POSSIBLE NOT POSSIBLE POSSIBLE

NOISE IN THE RANGE OF 60~80

DB

90 BD AND ABOVE IN THE RANGE OF 50 ~ 70

DB


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D.C. VALVE

THE NAME OF THE VALVE IMPLIES THE

FUNCTION IT PERFORM.

DIRECTION CONTROL VALVE ARE EMPLOYED IN

A HYDRAULIC SYSTEM TO DETERMINE THE

DIRECTION OF THE FLUID IN THE HYDRAULIC

CIRCUIT


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D.C.VALVE


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CLASSIFICATION OFD.C.VALVE

BY THE NUMBER OF PORT

BY THE NUMBER OF CONTROL POSITION BY THE OPERATING METHOD

BY THE CONDITION OF FLOW IN CENTER

POSITION


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FLOW CONTROL VALVE

THIS VALVE IS BASICALLY A SPPED CONTROL

VALVE WHICH REGULATES THE FLUID FLOW BY

ENLARGING OR REDUCING THE PORT AREA

WHILE THE OIL IS PASSING THROUGH THE

PASSAGE


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SYMBOL OF FLOW CONTROL VALVE


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PRESSURE CONTROL VALVE

PRESSURE RELIEF VALVE

PRESSURE REDUCING VALVE

UNLOADING VALVE

COUNTER BALANCE VALVE


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SYMBOL OF PR.RELIEF VALVE


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PR.REDUCING VALVE


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METER IN CIRCUIT


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METER IN AND OUT CKT


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REGENERATIVE CIRCUIT

THE PURPOSE OF SO CALLED CYLINDER RE-

GENERATION CIRCUIT IS TO EXTEND THE

PISTON FASTER THAN IF THE PUMP OUTPUT

ARE ACTING DIRECTLY ON THE CAP END AREA.


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CIRCUIT


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THE END

hydraulic training by avinash

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