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A variable air gap self-protection cylinder type permanent magnet governor

A technology of permanent magnet governor and self-protection, which is applied to permanent magnet clutches/brakes, electrical components, cooling/ventilation devices, etc. It can solve the problems of large radius of high-power devices, difficulty in heat dissipation, and ineffective protection.

Active Publication Date: 2018-02-13
江苏南自通华智慧能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disc structure usually adopts the form of changing the thickness of the air gap, which is convenient for protection, but the high-power device needs a large radius and has difficulty in heat dissipation; the barrel structure usually adopts the method of changing the effective target area, which can be extended infinitely to increase the power. And the heat dissipation is convenient, but because the air gap does not change, it cannot effectively protect

Method used

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  • A variable air gap self-protection cylinder type permanent magnet governor
  • A variable air gap self-protection cylinder type permanent magnet governor
  • A variable air gap self-protection cylinder type permanent magnet governor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 , 2 As shown in and 3, a variable air gap self-protection cylinder type permanent magnet speed governor includes an inner rotor and an outer rotor coaxially arranged.

[0046] The outer rotor includes an outer rotor shaft 1, an outer rotor end plate 2 and an outer rotor moving cylinder 3. The outer rotor moving cylinder 3 is coaxially arranged with the outer rotor shaft 1, and is connected to the outer rotor shaft 1 through the outer rotor end plate 2. connected, the outer rotor moving cylinder 3 can rotate synchronously with the rotation of the outer rotor shaft 1 .

[0047] The inner rotor includes an inner rotor shaft 6, an inner rotor rotating cylinder 4, an inner rotor inner rotating cylinder 5, a fan-shaped cylinder push-pull mechanism 8, a rotating disk rotating mechanism 7 and a radial fixed guide assembly. The inner rotor rotating cylinder 4 is arranged coaxially with the inner rotor shaft 6 , and the inner rotor rotating cylinder 4 can rotat...

Embodiment 2

[0085] Embodiment 2 is basically the same as the first rotary structure of embodiment 1, the difference lies in the addition of a water-cooling structure 91, specifically as follows:

[0086] The cooling water supply and drainage system 91 includes a cooling water supply and drainage pipeline 93 , a cooling water collector 92 and an external heat exchange mechanism 91 .

[0087] The cooling water collector 92 is coaxially sleeved in the middle of the outer rotor shaft 1 and connected with the external heat exchange mechanism 91 .

[0088] The cooling water supply and discharge pipeline 93 is evenly arranged in the sealed cavity, and the inlet end and the outlet end of the cooling water supply and discharge pipeline 93 are respectively connected with the cooling water collector 92 .

[0089] The cooling water collector 92 includes a cooling water supply cavity 92a and a cooling water recovery cavity 92b, the inlet end of the cooling water supply and drainage pipeline 93 is conn...

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Abstract

The invention discloses a variable air gap self-protection cylinder type permanent magnet governor, which comprises an inner rotor and an outer rotor. The inner rotor includes an inner rotor shaft, an inner rotor rotating cylinder, an inner rotor inner rotating cylinder, a fan-shaped cylinder push-pull mechanism, a rotating disk rotating mechanism and a radial fixed guide assembly. The rotating cylinder of the inner rotor is surrounded by several fan-shaped cylinders arranged concentrically. The outer rotor includes an outer rotor shaft, an outer rotor end plate, an outer rotor moving cylinder and a conductive metal cylinder. The combined action of the push-pull mechanism of the fan-shaped cylinder, the rotating mechanism of the rotating disk and the radially fixed guide assembly makes each sector-shaped cylinder move synchronously along the radial direction of the inner rotor rotating cylinder with the center of the inner rotor rotating cylinder as the center, thus making the variable The air gap increases or decreases to achieve the purpose of speed regulation. The permanent magnet governor of the present invention not only retains the advantages of the cylindrical structure in terms of power and heat dissipation, but also realizes the performance of speed regulation and self-protection by adjusting the thickness of the air gap, and is suitable for use in high-power devices.

Description

technical field [0001] The invention relates to a speed governor, in particular to a variable air gap self-protection cylinder type permanent magnet speed governor. Background technique [0002] The existing permanent magnet eddy current speed regulating device is mainly composed of a permanent magnet rotor and a conductor (such as copper) rotor. Generally, the motor shaft and the working machine shaft are respectively connected to one of the rotors, and there is an air gap (called air gap) between the conductor rotor and the permanent magnet rotor, and there is no mechanical connection for torque transmission. In this way, a soft (magnetic) connection is formed between the motor and the working machine, and the shaft torque and speed of the working machine can be changed by adjusting the air gap, so it can adapt to various harsh environments, and because there is no direct mechanical connection, it can reduce Mechanical loss. [0003] In the existing structure, there are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K49/10H02K9/19
Inventor 徐魁金平常新平陈晓菊张锋殷杰许多
Owner 江苏南自通华智慧能源股份有限公司
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