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TVC DEEP WELL PUMP

TVC DEEP WELL PUMP

TVC DEEP WELL PUMP Detailed content introduction:

一、General
TVC types have been designed as piston cooling and LO pump for 1B &W engine. The motor bedis mounted on the top of LO tank and the pump is suspended to the bed by discharge pipe They areused in the submerged state below the oil level of the LO tank.
Compared with gear or screw pump used in general for LO these pumps have the following lea tures giving much benefit to the user.
1.Suction side needs no suction pipe,valve and strainer so weight,installation space and price canbe reduced.
2.Since the pump is submerged in oil ,no priming is needed at starting.
3.The control of capacity and head is very easy.
4.The casing is of special consideration is given so that radial thrust on the impeller becomes min-imum.
5.The impeller is of single suction and in order to improve suction performance Francis vanes areadopted.For large-sized pumps,thrust load acting on the upper ball bearing is reduced by chang-lng the upper and lower diameters of impeller mouth so as to turn fliud thrustupword. Moreover,by providing balance holes at the impeller inlet,downward thrust is reduced and at the same time air lock is prevented.
6.Because of high LO viscosity at cold startup,capacity decreases and at the same time shaft hot-sepower increases.Accordingly,motor output is determined by multiplying normal shaftHorsepower by correction facter so that the motor is not overloaded at cold startup.
7.For the line bearing material,HLIBC is adopted.
二、Construction
TVCtype is vertialtank-mounted pump.
The pump is connected with motor by flexible coupling.
By bearings lubricated lubricate oil.
三、Material
Casing:cast iron
Impeller:phosphor bronze
Shaft:carbon steel
Sleeve:bronze

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