Hub type liquid cooling permanent magnet dynamometer

A dynamometer and liquid cooling technology, which is applied in power metering, measuring devices, instruments, etc., can solve problems such as difficult to adjust torque, and achieve the effect of no power consumption, stable and long-lasting load torque, and easy continuous adjustment

Inactive Publication Date: 2009-11-11
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The distance adjusted by this disc structure is not in a linear relationship with the torque of the dynamometer, and the load torque is very sensitive to the distance between the stator disc and the rotor disc, making it difficult to adjust to the required torque

Method used

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  • Hub type liquid cooling permanent magnet dynamometer
  • Hub type liquid cooling permanent magnet dynamometer
  • Hub type liquid cooling permanent magnet dynamometer

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing:

[0016] The torque load control mode of the present invention has two structures of automatic control and manual control, which will be described in detail below in conjunction with the accompanying drawings.

[0017] The torque load automatic control structure of the present invention is as Figure 1 ~ Figure 2 As shown, it includes a housing 11 , brackets 5 and supports 13 fixed at both ends of the housing 11 , a stator and a rotor arranged in the housing 11 . The stator is composed of a stator hub 7 , a sealing cover 8 , a housing 11 and a moving disc 12 . The bracket 5 is connected with the shell 11 through bolts, the sealing cover 8 and the spiral water channel on the stator hub 7 form a liquid cooling device, the end surface of the stator hub 7 is fixedly connected with the moving plate 12, and the moving plate 12 is connected with the moving control structure through...

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Abstract

The invention relates to a hub-type liquid-cooled permanent magnet dynamometer cooled by water circulation, which belongs to power machinery testing equipment. It includes a casing, a stator and a rotor, and the rotor includes a magnet holder and several permanent magnets fixed on the circumference of the magnet holder. The stator includes a stator hub and a moving disc fixed on the end face of the stator hub. A spiral water channel is arranged on the outer surface of the stator hub, and the spiral water channel is sealed by a sealing cover on the spiral water channel to form a liquid cooling device. The sealing cover is connected with the casing through a guide rail mechanism, the moving disk is connected with the control mechanism, and the stator hub, the sealing cover and the moving disk can slide axially in the casing through the control of the control mechanism. The load torque generated by the dynamometer in the present invention is easy to adjust continuously; the permanent magnet replaces the excitation coil of the eddy current dynamometer, saves copper resources, has no power consumption during stable work, and has stable and long-lasting load torque at high speed; closed water circulation cooling system Good cooling effect, no noise, suitable for occasions with high noise requirements.

Description

technical field [0001] The invention belongs to power machinery testing equipment, and relates to a hub-type liquid-cooled permanent magnet dynamometer cooled by water circulation. Background technique [0002] The dynamometer, also known as the loader, is mainly used to test the power of the power machine, and can also be used as a load device for gear boxes, gearboxes, reducers and other equipment to test their dynamic parameters. At present, the widely used dynamometer is the eddy current dynamometer. The eddy current dynamometer generates the reverse load torque through the eddy current induced by the changing magnetic field, and applies the load to the output shaft of the test power machine to measure the power of the power machine. power. [0003] The Chinese patent ZL200820079243.9 titled "A Water-cooled Permanent Magnet Eddy Current Dynamometer" discloses a disc-type liquid-cooled permanent magnet dynamometer. It controls the torque of the dynamometer by moving the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L3/24
Inventor 李德胜叶乐志马元京王文武孙雷春
Owner BEIJING UNIV OF TECH
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