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A forced-cooling vortex brake

An eddy current brake and forced cooling technology, which is applied in the direction of brakes, railway braking systems, railway car body parts, etc. where the braking element interacts with the track, can solve the problems of high temperature of the braking device and reduce the eddy current braking efficiency, etc. Improve stability, shorten braking distance, increase the effect of eddy current braking limiting power and application frequency

Inactive Publication Date: 2019-01-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to solve the problem that the high-power eddy current braking technology without wear used by the existing trains greatly reduces the eddy current braking efficiency due to the high temperature of the braking device caused by the huge braking energy

Method used

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  • A forced-cooling vortex brake
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  • A forced-cooling vortex brake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A forced cooling eddy current brake, its structure is as follows figure 1 or figure 2 As shown, it includes the eddy current brake module, also includes the eddy current cooling control module, and the air source and air path module for supplying air to the vortex cooling control module,

[0035] The air source air path module 1 provides the compressed air required by the vortex cooler for the vortex refrigeration control module. In the air source air path module 1, the air supply unit 1.1 (an air compressor in this embodiment) provides the air source, the combined dust collector 1.2 filters the compressed air provided by the air supply unit 1.1, and the compressed air passes through the one-way valve 1.3 Finally lead to air storage cylinder 1.4.

[0036] In the vortex refrigeration control module, the compressed air provided by the air storage cylinder 1.4 in the air source air circuit module 1 is sequentially passed through the on-off solenoid valve 2.1 and the pre...

Embodiment 2

[0040] On the basis of Embodiment 1, this embodiment is further configured as follows: a throttling valve is provided in the pipeline between the pressure regulating valve 2.3 and the compressed air inlet 2.8.

Embodiment 3

[0042] On the basis of Embodiment 1, this embodiment is further configured as follows: the cold air outlet pipe 2.7 is processed into a reduced nozzle structure.

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Abstract

A forced-cooling vortex brake includes an eddy current brake module, an eddy current refrigeration control module, and an air source air path module for supplying air to the eddy current refrigerationcontrol module. The eddy current refrigeration control module includes an on-off solenoid valve, a scroll refrigerator, and a control unit for connecting and controlling the on-off solenoid valve andthe working state of the scroll refrigerator. In accordance with that prior art, the invention utilizes the pressure air pipeline or the air compressor which the train already has, and a low temperature airflow generated by the vortex cooler is injected into the position of the induction disk and the magnetic pole in the eddy current brake module of the train to effective control the temperatureof induction disk and magnetic pole, so that the train braking process can maintain a stable magnetic field strength, avoid the eddy current braking device close to or reach the Curie point temperature due to the high temperature generated in the braking process, the magnetic field strength drops or disappears sharply, resulting in the eddy current braking device loses the braking efficiency, andso on.

Description

technical field [0001] The invention relates to an eddy current brake, in particular to a forced cooling type eddy current brake. Background technique [0002] With the development of train technologies such as high-speed trains, maglev trains, and high-density urban rail vehicles, the train braking system bears huge braking power, so it is urgent to develop various braking technologies. Eddy current braking has attracted attention due to its outstanding characteristics of no wear and stable braking force at high speed, but the high temperature of the braking device due to the huge braking energy greatly limits the efficiency of eddy current braking, and the braking force decays with the increase of temperature, especially the temperature The influence of permanent magnet eddy current braking seriously restricts the further application of eddy current braking. [0003] Chinese patent 201210165713.4 discloses a combined disc eddy current brake applied to high-speed trains, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61H7/08
CPCB61H7/083
Inventor 应之丁宋英子
Owner TONGJI UNIV