Taitiriya Samhita Part III Series No 42 - Ananad Ashram Series
ONE DAY WORKSHOP ON DAMS GATES ORGANIZED BY NARMADA, WATER RESOURCES, WATER SUPPLY & KALPSAR...
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Transcript of ONE DAY WORKSHOP ON DAMS GATES ORGANIZED BY NARMADA, WATER RESOURCES, WATER SUPPLY & KALPSAR...
ONE DAY WORKSHOP ON DAM’S GATES
ORGANIZED BY NARMADA, WATER RESOURCES, WATER SUPPLY & KALPSAR DEPARTMENT
GANDHINAGAR
SUPPORTED BY
WALMI -ANANAD
Sub:- MAINTENANCE OF GATES
PAPER BY:- ER. S.K.SUTHARRetd. Deputy Executive Engineer (Mech.)
04/10/23 2
MAINTENANCE OF GATES
The gates might have been well designed and sturdy and timely inspected but if the follow up action is not taken, the gate will not run smoothly. Hence periodical maintenance should be done with in prescribed timing..
STEPS FOR MAINTENANCE
LUBRICATION WIRE ROPES PAINTING
HORIZONTAL GIRDER
HORIZONTAL GIRDERSK
IN P
LATE
BRACING
T-VERTICALS
STIFFNERS
HORIZONTAL GIRDER
HORIZO
NTAL G
IRDER
BRACING
T- VERTICAL
LUBRICATION
• Various parts of Gate are required to be lubricated by using proper Grade of lubrication.
• Lubrication schedule has been given in the Table .
• Approximate quantity of lubricant shall be kept ready which may vary as the number of gates. However the required quantity can be ascertained by experience.
LUBRICATION
• In the Table, the lubricants grade mentioned are of INDIAN OIL CORPORATION. However equivalent grade of any Reputed make may be utilised.
TABLESr No Parts to be
LubricatedLubrication Recommended
APPROXIMATE QUNTITY
SCHEDULE REMARKS
1 Trunnionpin
Servo Coat 120
As requiredQuarterly 1Kg.
May, AugustNov
Pin should be lubricated till grease squeezes out from sides.
2 Wire Ropes CardiumCompound
35 Kg May When ropes are dry
3 Guide rollers Servo coat-140
1 Kg •Six Monthly•May, Nov.
4 Turn buckle Servo Coat-120
As required Prior to MonsoonMay
TABLE 5 Bushing in rope
drum &all Bearings
Servogum-2 5 Kgs Prior to Monsoon
6 Drum gear,Intermediate gearPinions,
Servogum-140 5 Kgs Quarterly(May,Aug,Nov,Feb)
7 Reduction unit Servogum-2 25 ml Yearly (May)
8 Electrical Motor Bearing
Servogum-2 Small Quantity
Change after every 2000 Hrs
9 Electro Magnetic brake rings &Pins
Servogum-2 Small Quantity
Quarterly(May,Aug,Nov,Feb)
10 Sprocket Wheel &chain
Servogum-2 Small Quantity
Quarterly(May,Aug,Nov,Feb)
APPLICATION OF LUBRICANTS
• The wire ropes should be cleaned and dried and a jet of air or wire brush is used prior to application of lubricants
• The brush is dipped into the Lubricants to be applied.
• It may also be applied by hand with leather gloves especially when a heavy, on flowing lubricants is applied.
• Lubricants should be slightly heated to get a smoother and better application.
04/10/23 12
HOIST MECHANISM
04/10/23 13
FLOATING / LINE SHAFT
04/10/23 14
FLOATING / LINE SHAFT
WIRE ROPES
• 1. Shifting the wire ropes at point of clamping position on Drums and cutting its end.
• 2. Lubrication of wire ropes.
• 3. Maintenance of wire ropes can be carried out As per I.S.3973-1967.However some of details given in next slide.
WIRE ROPES• Lubrication shall be free from harmful substances
such as acids &alkalis.
• It should be light grade that may penetrate between the wires &strands of the ropes before being wiped off or absorbed by surface dirt.
• Cardium Compound is used as during manufacturing of wire ropes are fully lubricated including fibre core &layers to reduce internal abrasion to exclude moisture and delay corrosion.
• In service the initial lubricant will tend to dry out and therefore it is desirable to lubricate all ropes at regular interval
SILL BEAM
WALL PLATE
END VERTICAL
MAIN ROLLER
ROLER PIN
END VERTICAL
MAIN ROLLER
ROLER PIN
WALL PLATE
Z TYPE RUBBER SEAL
TOP PLATE
SKIN PLATE
WIRE ROPE
PAINTING
NEED FOR PAINTING• A. Iron and steel structure exposed to
sun, rains and air are deteriorated due to corrosion effect.
• Once corrosion set in, it goes on continuously eating metal.
• Only 1.6 to2.0 mm corrosion allowance is provided in design of gates. Therefore it should be regularly painted on Upstream and Downstream sides as indicated in Table
TABLESR NO
MANE OF GATES PART TO BE PAINTED
PAINTS REOMMENDED FREQUENCY
1 Gate leaf-UPSTEAM SIDE Anticorrosive black H.D. of renowned make
Two coats/three coats once in a year or as required.
2 Gate leaf-Downstream side &all Other parts except Hoist covers and the bars
Anticorrosive black L.D. of renowned make
Single coat /two coats once in a year or once in two years depending upon the condition.
3 Hoist covers Primary coat-Red OxideFinal coat-Blue enamel or dowel deep orange.
Once in a year.
4 Railing pipes Primary coat-Red oxideFinal coat- Aluminum oxide
Once in a year
5 Railing pipes Primary coat-Red oxideFinal coat- Aluminum oxide
Once in a year
NOTE
• Painting should be done by adopting proper painting procedure prior to which scraping, chipping etc.should be done and vegetation developed should be removed.
• Brass plates and rubber seal should not be paint
• The paints to be used depend on site situation i.e. whether water is to acidic or basic, Dams located near to sea.etc.
• Painting should be carried out after drying of first coat and before applying paint, it should be perfectly cleaned &free from moisture,dust.etc,
HUB
BRACKET
TRUNION PIN
LOCK PLATE
ANCHOR GIRDER
GUSSETPLATE
04/10/23 26
FLOATING / LINE SHAFT
HORIZONTAL GIRDER
HORIZO
NTAL G
IRDER
BRACING
T- VERTICAL
ELECTRICAL PARTS
• Electrical cables should be checked for puncture.
• Cable clamps and lugs should be checked, tightened or replaced, if found faulty.
• Contacts of main switch should be checked.
• Overload relay may be checked and tested and put in operational condition.
• Check wiring, contacts of starter and tighten as required. Burnt or worn out may be replaced.
04/10/23 32
HOIST MECHANISM
ELECTRICAL PARTS
• Check the operation of Electromagnetic brake and clean periodically the plunger and barrel as deposition of dust or dirt will make chattering noise and hammering.
• Adjust brake shoes depending upon wear and tear of shoes.
• If magnetic coil is found burnt then it should be replaced.
04/10/23 34
• Check the digital indicators are in working condition, if it is not in working condition, gate could not be operated /seen from the control room.
CONTROL ROOM
04/10/23 36
CONTROL ROOM
04/10/23 37
DIESEL GENERATOR ROOM
ELECTRICAL PARTS
• Check the operation of Limit switches and if, not in working condition, it should be checked for proper contact with dial or wiring.
• T.P.I.C. should be checked for proper contact of all three phase otherwise single phasing will result in burning of motors.
THANKS
POWER POINT PRESENTATION PREPARED BY
ER.J.R.RATHOD,ER. K.B.TRIVEDIER. R.C.RANAD.E.E.(MECH.)
N.W.R.W.S.& Kalpsar Department, Gandhingar