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Middle support water lubrication ceramic bearing structure of super-long horizontal multistage centrifugal pump

A technology of ceramic bearings and intermediate supports, applied in the direction of non-variable pumps, non-volume pumps, pumps, etc., can solve the problems of equipment safety hazards, reduced stability and reliability, pump vibration, etc., to achieve improved stability and Reliability, reduced complexity, and improved economy

Pending Publication Date: 2020-08-25
ZHENGZHOU POWER EQUIP WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally, horizontal multistage centrifugal pumps are still supported by bearings at both ends. The lubricating meson is lubricating oil, and the lubrication form is pressure oil forced lubrication or oil throwing ring lubrication. In this way, the stability and reliability of the pump are greatly reduced during operation, causing dynamic and static parts The friction and grinding of the pump will cause the pump to vibrate, which will bring great safety hazards to the equipment

Method used

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  • Middle support water lubrication ceramic bearing structure of super-long horizontal multistage centrifugal pump
  • Middle support water lubrication ceramic bearing structure of super-long horizontal multistage centrifugal pump
  • Middle support water lubrication ceramic bearing structure of super-long horizontal multistage centrifugal pump

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Embodiment Construction

[0020] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0021] Embodiments of the present patent are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are only used for explaining the patent, and should not be construed as limiting the patent.

[0022] In the description of this patent, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this patent and simplifying the des...

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Abstract

The invention provides a middle support water lubrication ceramic bearing structure of a super-long horizontal multistage centrifugal pump. The middle support water lubrication ceramic bearing structure comprises a pump shaft, a front-stage impeller and a rear-stage impeller are arranged on the two sides of the pump shaft, and the front-stage impeller and the rear-stage impeller rotate along withthe pump shaft; a guide vane, a middle section, a connecting screw, a ceramic bearing II, a ceramic bearing frame, an anti-rotation pin I and a sealing rubber ring are all static parts, so that the complexity of the equipment is greatly reduced, and the economical efficiency of the equipment is improved; the lubricating mechanism of the bearing is still a fluid dynamic pressure bearing, moving andstatic parts of the bearing are still abraded when equipment is started and stopped, and the matching part of the moving and static parts of the bearing structure is made of an optimized ceramic material; and the ceramic material is wear-resistant and high-temperature-resistant and can generate a special reaction product with water, and the reaction product has protection and lubrication effects,so that the starting and stopping safety of the equipment is greatly improved.

Description

technical field [0001] The invention relates to the technical field of super-long horizontal multi-stage centrifugal pumps, in particular to an intermediate support water-lubricated ceramic bearing structure of super-long horizontal multi-stage centrifugal pumps. Background technique [0002] Horizontal multistage centrifugal pumps are widely used in power stations, petroleum, chemical and other fields. With the increase of the outlet pressure of equipment in the application field, the efficiency of the entire operating system is improved. Users put forward higher requirements for the outlet pressure of multistage centrifugal pumps. The increase of the pressure and the number of stages of the multistage centrifugal pump can effectively improve the efficiency of the pump, but with the increase of the number of stages, the bearing span at both ends of the bearing increases, which puts forward higher requirements for the stability of the pump. Generally, horizontal multistage c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/046F04D29/06F04D1/06
CPCF04D1/06F04D29/0465F04D29/061
Inventor 李宏乔杨光刘华威李玉珍韩有泉武姣师东生王昆仑
Owner ZHENGZHOU POWER EQUIP WORKS
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