Unlock instant, AI-driven research and patent intelligence for your innovation.

A high-speed centrifugal pump directly driven by a permanent magnet motor

A permanent magnet motor and high-speed centrifugal technology, which is applied in the direction of machines/engines, liquid fuel engines, and components of pumping devices for elastic fluids, and can solve problems such as difficult to improve cooling methods and heat generation

Active Publication Date: 2021-08-03
HANYU GRP CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The surface of the permanent magnet rotor of the high-speed centrifugal pump directly driven by the permanent magnet motor heats up seriously, and it is difficult to improve it by conventional cooling methods

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A high-speed centrifugal pump directly driven by a permanent magnet motor
  • A high-speed centrifugal pump directly driven by a permanent magnet motor
  • A high-speed centrifugal pump directly driven by a permanent magnet motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The embodiment of the present invention is improved on the basis of the traditional structure, such as figure 1 , figure 2 with image 3 shown. The design of the motor following the prior art includes:

[0019] - pump body 1, which has a suction port 2 and a discharge port 3;

[0020] - shaft 6;

[0021] ——The impeller 4 is fixed on the rotating shaft 6 and rotates in the pump body;

[0022] ——The machine base 5 is connected with the pump body 1 as a whole;

[0023] ——The end covers 71, 72 cover the two axial ends of the machine base 5;

[0024] ——The stator 10 is fixed in the inner cavity of the frame 5, which includes a stator core 101 and a stator winding 102;

[0025] ——The rotor 12 is fixed on the rotating shaft 6, which includes the rotor core 3 and the end rings 9 located at its two ends for compressing the iron core or conducting electricity. The rotating shaft 6 is supported by the end covers 71 and 72 through bearings;

[0026] - There is an air gap 3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A high-speed centrifugal pump directly driven by a permanent magnet motor, comprising a casing with a suction port and a discharge port, an impeller rotating in the casing, and a permanent magnet motor that drives the impeller coaxially; the permanent magnet motor includes a stator and an air gap A permanent magnet rotor separated from it; the permanent magnet rotor includes a rotor iron core and a permanent magnet fixed to the iron core; the diameter of the impeller is 100-300mm, and the rated speed is not less than 3000r / m; it is characterized in that: the permanent magnet The cylindrical surface of the magnetic rotor located in the air gap is machined as a multi-thread thread. This design significantly reduces the surface temperature rise of the permanent magnet rotor while maintaining performance.

Description

technical field [0001] The invention relates to a high-speed centrifugal pump directly driven by a permanent magnet motor, and the IPC classification belongs to F04D13 / 06. Background technique [0002] The surface of the permanent magnet rotor of the high-speed centrifugal pump directly driven by the permanent magnet motor generates serious heat during operation, and it is difficult to improve it by conventional cooling methods. [0003] Relevant terms and common knowledge can be found in the national standard GB7021 "Terminology of Centrifugal Pumps", "Mechanical Engineering Handbook" and "Electrical Engineering Handbook". Contents of the invention [0004] The technical problem to be solved by the present invention is to propose a high-speed centrifugal pump directly driven by a permanent magnet motor, which can significantly reduce the temperature rise of the rotor compared with the traditional design, and has a relatively simple structure, good reliability and high eff...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F04D13/06F04D29/58
CPCF04D13/06F04D29/5806F04D29/586
Inventor 区长钊
Owner HANYU GRP CO LTD