Overview:
In order to meet the needs of localization of equipment in my country's oil refinery reconstruction and expansion units as soon as possible, our factory has developed JSY series centrifugal process pumps. This series of products fully conforms to the AP1610 standard and is mainly suitable for atmospheric pressure tower bottoms in oil refinery units. pump, crude oil pump, vacuum tower bottom pump, etc. This series of products has the characteristics of high reliability, high degree of generalization and long service life.
Parameter range:
Flow: (Q)=600~1700m sand
Head: (H)=250~370m
Operating temperature: (T)=-45~+450°C
It is easy to remove the impeller bearing, shaft seal, etc. without removing the suction or discharge pipeline during maintenance. The JSY type process pump adopts a flexible diaphragm type extension coupling part, and it is a conical fit with the pump wheel, so it is very easy to disassemble and assemble. Convenience.
Model Description:
JSY 900-350B
B-number of cutting impellers,
The order is represented by A, B...
350-design point head (m)
900-Design point flow (m3h)
JSY-radial split volute type two-stage double suction
Process pump
Turning of the pump:
Rotate counterclockwise from the prime mover to the pump.
Pump piping system
Cooling water
In order to make the pump work normally, the shaft seal cavity, bearing body and pump bracket
Different types of cooling must be carried out according to the working conditions, and the pipeline layout of the cooling water should meet the requirements of the AP1610 specification, which is generally equipped on the pump. Only the inlet and outlet connections remain. The minimum nominal diameter of the cooling water pipeline should be 1/2". The impeller is integrally cast and dynamically balanced with the rotor. It is driven by a key with the shaft, and the rotor is supported at both ends.
The bearing body of this series of pumps has two structural types, one is radial ball bearing and radial thrust ball bearing. The other is radial sliding bearing and radial thrust ball bearing.
Structural features:
JSY type process pump is a radially split volute type two-stage double-suction end-supporting type
The casing is a radially split volute type, and its installation method is a horizontal center support, which is especially suitable for conveying high temperature, high pressure and flammable, explosive or toxic liquids; the suction flange and discharge flange of the pump are cast in the pump. The shaft seal cavity (the west of the packing) and the pump cover are cast as a whole, it can be filled with packing seals and balance type, bellows type, tandem mechanical seals. The water-cooling jacket selected, the water-cooling chamber must be equipped with special requirements or when the temperature of the conveying medium is water exceeding 66°C and the temperature of hydrocarbons exceeding 120°C.
Sealing oil pressure
Generally, it is 0.07~0.1MPa (about 0.7~1.0kgf/cm2) higher than the pressure of the sealed cavity. If the conveying medium is easy to vaporize, it should be higher than the vaporization pressure of 0.175~0.2MPa (about 1.75~2kgf/cm). The accessories such as coolers, filters, orifice plates, flow indicators, etc., are all delivered by the pump factory.