High temp, vertical centrifugal pump

Abstract

There is disclosed a high-temp. vertical centrifugal pump, in which, because of forming a hydraulic pattern design by the combination of an integral annular extruded pump with a straight-vane impeller, mounting an effective ring on the shaft section in the supporting tube and using a high-temp. bearing and a shaft made of high-temp. material, the working temp. of the vertical centrifugal pump has increased from about 100 deg.c. to below 500 deg.c.

Description

technical field [0001] The invention belongs to the field of high-temperature vertical centrifugal pumps of the pump technology. Background technique [0002] The vertical centrifugal pump of traditional products is mainly composed of pump body, impeller, support tube, shaft, bushing, sliding bearing, support seat, motor frame, bearing oil seal and so on. To increase the depth of submerged insertion, use an adapter. The submerged part of the pump shaft is supported by sliding bearings, and the part above the submerged part is supported by angular contact ball bearings. When installing, first install the angular contact ball bearing on the shaft and the bearing seat, then install the support tube and the support frame (the sliding bearing has been installed on it) in sequence, install the shaft when there is a shaft, and then install the support tube And the support frame until the pump cover and impeller are installed, then fix the impeller, finally install the pump body, ...

AI Technical Summary

Problems solved by technology

However, under the high temperature conditions of 350°C to 500°C, the use of traditional vertical centrifugal pumps is limited: 1. Bearings under traditional structures, including rolling bearings and sliding bearings, the bearing clearance becomes smaller at high temperatures, and the rolling clearance of rolling bearings is small It will lead to severe wear of rolling bearings; and the small clearance of sliding bearings will not only cause severe wear, but may also cause the death of the rotating shaft; 3. The shaft of the traditional vertical centrifugal pump can be designed to be lengthened, but under high temperature conditions, the lengthened shaft will produce great deformation, which will intensify friction, greatly increase vibration and noise, and shorten the service life of the pump; 4. Traditional The sealing method is difficult to achieve sealing under high temperature conditions

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