Horizontal stainless steel multi-stage pump

CHL2-2Horizontal stainless steel multi-stage pump

CHL2-2Horizontal stainless steel multi-stage pump

In order to avoid the weight of pipelines and valves, as well as the force and torque generated by pipeline thermal stress, exceeding the allowable external load of the pump inlet and outlet, pipe racks must be installed on the suction and discharge pipelines of the pump. The allowable load of the pump tube port should be provided by the pump manufacturer.

2. For pumps with vertical inlet or outlet, in order to reduce the force on the pump pipe mouth, a pipe rack must be installed above the pipe mouth, and its plane position should be as close to the pipe mouth as possible. The pipeline can be supported and suspended by the longitudinal beam of the pipe gallery, so the pump is often arranged under the pipe gallery.

In order to improve the suction performance of the pump, the suction pipeline of the pump should be shortened as much as possible, with as few bends as possible (large curvature radius should be used for bends), in order to reduce pipeline resistance loss. To prevent cavitation of the pump, the suction pipe of the pump should avoid the bladder shaped part where gas accumulates as much as possible. If it cannot be avoided, a double suction pump should be installed in the bladder shaped part. In order to avoid cavitation of the bidirectional suction horizontal centrifugal pump, the double suction pipes should be symmetrically arranged to ensure even flow distribution on both sides. The vertical pipeline is directly connected through an elbow, but the axis of the pump must be perpendicular to the plane where the elbow is located. At this point, the imported piping should be as short as possible, with the elbow connected to the reducer and then connected to the inlet flange. Under other conditions, the weight of the valve on the inlet and outlet pipeline of the non-metallic pump should not be less than that of the pump body before the pump inlet. A pipe rack should be set up to prevent damage to the pump body and the pipeline before and after the valve is twisted when opening and closing the valve.

4. The exhaust pipeline of the steam reciprocating pump should have fewer bends, and a discharge pipe should be installed at the location where condensation water may accumulate. If the venting volume is large, a muffler should also be installed. The steam inlet pipeline should be equipped with a condensate discharge pipe before the steam inlet valve to prevent water from hitting the cylinder.

When the distance between the centerline of the pump outlet and the centerline of the pipe gallery column is greater than 0.6m, the swing check valve on the outlet pipeline should be placed in a horizontal position, and it is not allowed to install a clean valve on the valve cover at this time.

When the pipeline is placed above the pump and motor, in order not to affect the lifting of the lifting equipment, the pipeline should have sufficient height. Pipelines transporting corrosive liquids should not be arranged above the original moving equipment.

The net distance from the bottom of the pipeline in the lower part of the pipe gallery to the floor should not be less than 4m to meet maintenance requirements.

When the pipeline is placed above the pump body, the clearance height from the bottom of the pipe to the ground should not be less than 2.2m.