Special centrifugal pump with air-cooled type bearing body

Abstract

The invention relates to a special centrifugal pump with an air-cooled type bearing body, comprising a pump body, impellers, a main shaft, a front and back bearing box and a bearing box cooling mechanism; the main shaft is installed horizontally inside the pump body; the multi-level impellers are fixed one by one in the main shaft by bonds; the bearing box comprises a box body, an end cover and a bearing groupware; the front bearing box and the back bearing box are respectively placed at the two ends of the main shaft that passes through the box body of the bearing box and has non-drive end exposed outside the box body; the bearing groupware is placed inside the box body and fixed in the main shaft; the bearing box cooling mechanism comprises fans respectively placed in the outer sides of the front bearing box and the back bearing box and closely clinging to the to the outer wall of the box body; the fans are fixed in the main shaft via a fastener; the current water-cooled manner is changed to be an air-cooled manner, which well adapts to the actual situation of the offshore platform; the rotation of the main shaft is used for driving the fans; the outside cold air enters the bearing box under the effect of the air pressure so that the inside cooling of the bearing box is realized, which can largely increase the working efficiency of the special centrifugal pump with an air-cooled type bearing box and reduce the consumption of energy sources.

Description

technical field [0001] The invention relates to a pump, in particular to an air-cooled bearing box special centrifugal pump which can be used for drilling platforms, exploration platforms and other offshore operating platforms. Background technique [0002] Existing bearing box special centrifugal pumps use water circulation to cool the front and rear bearing boxes. Generally, a cooling water tank is added to the outer wall of the front and rear bearing boxes, and the cooling water is passed along the outer wall of the box. Circulation back and forth achieves the purpose of cooling and cooling, and most of them use tap water directly as cooling water, but some special centrifugal pumps for bearing housings are used on offshore platforms such as drilling platforms and exploration platforms, because tap water is the most scarce thing on offshore platforms , because it is impossible to cool the front and rear bearing boxes with water cooling for a long time, it will inevitably ...

AI Technical Summary

Problems solved by technology

[0002] Existing special centrifugal pumps for bearing boxes use water circulation cooling to cool the front and rear bearing boxes. Generally, a cooling water tank is added to the outer wall of the front and rear bearing boxes, and the cooling water is passed along the outer wall of the box. Circulation back and forth achieves the purpose of cooling and cooling, and most of them use tap water directly as cooling water, but some special centrifugal pumps for bearing housings are used on offshore platforms such as drilling platforms and exploration platforms, because tap water is the most scarce thing on offshore platforms , because it is impossible to use water cooling for a long time to cool the front and rear bearing boxes, which will inevitably lead to a reduction in the working efficiency of the special centrifugal pump for the bearing box

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