株式会社電業社機械製作所 DMW CORPORATION

株式会社電業社機械製作所 DMW CORPORATION

ProductLineupDetails

Single Suction Multi Stage Centrifugal Blower

MODEL BTnP

For Oil & Gas, Petrochemical Plants, etc.

Product Outline

DMW’s single suction multi-stage centrifugal blowers are designed and manufactured based on the following concepts.

High Reliability
The blower consists of high precision components manufactured and processed with our extensive know-how and is assembled by experienced technicians.

High Efficiency
CFD analysis is used to design the impeller and the passage to improve efficiency and reduce shaft power.

Quiet Operation
Rotor imbalance is corrected with a dynamic balancer to suppress vibration during operation.
This enables stable continuous operation for a long period.

Easy Maintenance
The horizontally split structure of the casing makes maintenance easier.

Material

Part Name Standard Material
Impeller Carbon steel, stainless steel, aluminum alloy
Boss Carbon steel, stainless steel, forged steel, aluminum alloy
Shaft Carbon steel, stainless steel, forged steel
Casing Cast casing Cast iron, ductile cast iron
Fabricated casing Carbon steel, stainless steel
Bearing Antifriction, sleeve
Bearing housing Cast iron

Cast casing

Graph for reference

Fabricated casing

Graph for reference

Accessories

  • Forced lubrication equipment
  • Turning device
  • Inlet guide vane
  • Actuator
  • Suction silencer
  • Suction filter
  • Expansion joint
  • Control panel

Delivered Projects

Oil factory
Type: ø700/600 single suction 5-stage centrifugal blower
Specification: 499 m³/min, 86.2 kPa, 930 kW
Chemical company
Type: ø700/600 single suction 4-stage centrifugal blower
Specification: 582 m³/min, 69.6 kPa, 800 kW

Blower Structure

Capacity Control

Blower capacity is controllable with the inlet guide vane.

Inlet guide vane for the multi-stage blower

Parenthesized figures show inlet guide vane openings.

Bearing Design

  • Antifriction bearing unit

    Antifriction bearing unit

    Deep groove ball bearings
    Oil bath lubrication
    Integral bearing housing
    Oil scraper

  • Sleeve bearing unit

    Sleeve bearing unit

    Forced lubricated sleeve bearings
    Horizontally split bearing housing
    Oil scraper

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