Installation of integral Unit of Boiler centrifugal Fan and Correction of Axle Centerline
Mar 27, 2019
The installation of the whole unit of boiler centrifugal fan shall be carried out directly on the basis of a pair of inclined cushion iron, the centrifugal fan assembled on the spot shall be properly protected from corrosion or operation, and the cutting surface of the base shall be properly protected and shall not be corroded or operated. When the base is placed on the foundation, apply a pair of inclined cushion iron to find flat. The bearing housing shall be tightly engaged with the base, the longitudinal non-level shall not exceed 0.2 million, the horizontal level shall not be measured on the spindle, the transverse non-horizontal bottom shall not exceed 0.3 × 1000, and the horizontal level shall be measured on the horizontal half-plane of the bearing housing.
The bearing line of boiler centrifugal fan should be corrected first, and the clearance between impeller and inlet and the gap between spindle and rear side plate hole should be adjusted to meet the requirements of the technical document of the equipment in order to make it meet the requirements of the technical document of the equipment in order to adjust the clearance between the main shaft and the rear side plate hole of the boiler centrifugal fan in order to meet the requirements of the equipment technical document.
When assembling the main shaft and bearing of boiler centrifugal fan, the main shaft and bearing shall be checked according to the technical document of the equipment. A 0.04 mm interference between the bearing cover and the bearing pad (measuring the outer diameter of the bush and the inner diameter of the bearing housing) shall be maintained. The axial and radial clearance between the impeller inlet and the housing inlet shall be high-speed to the scope specified in the technical document of the equipment, and the fastening of the ground bolt shall be checked at the same time when the fan case is assembled on the basis of the rotor shaft line as the basis for locating the housing position, and the axial and radial clearance between the impeller inlet and the housing inlet shall be high-speed.www.jnblower.com
