Pit-buried cryogenic motor type experiment device and tested motor temperature rise calculating method

A technology of experimental device and cryogenic device, which is applied in the direction of electric device, motor generator test, thermometer, etc., can solve problems such as difficult selection of low-temperature sealing materials, large temperature difference, and inability to guarantee the authenticity of key data of motor efficiency, etc., to achieve Effects of Solving Measurement Challenges and Avoiding Potential Threats
CN106772034AInactive Publication Date: 2017-05-31大连威克特工贸有限公司
1 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
大连威克特工贸有限公司
Publication Date
2017-05-31
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a pit-buried cryogenic motor type experiment device and a tested motor temperature rise calculating method. The device comprises a load, a lifting mechanism, a coupling, a cryogenic device, and control test equipment. The load is vertically installed on the lifting mechanism. The cryogenic device installed in a ground pit. A tested motor is vertically installed in the cryogenic device by means of bottom fixing. The cryogenic device includes a liquid nitrogen can, liquid nitrogen, and a cryogenic resistant insulation shell. The advantages are as follows: as liquid nitrogen sealing is not involved, energy loss caused by liquid nitrogen sealing for preventing liquid nitrogen from flowing out from the shaft extension during horizontal installation is avoided; the efficiency and technical parameters of the motor can be measured accurately; the test precision is equivalent to that of a conventional motor type test bench; and potential threat to the human body due to low-temperature liquid nitrogen leak is avoided effectively. The resistance of the tested motor is measured using the power line of the tested motor. The problem on how to measure the temperature rise in a cryogenic state is solved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of motors, in particular to a pit-buried cryogenic motor type experiment device. Background technique

[0002] The type test of the motor includes many items, such as no-load current, no-load loss, efficiency, temperature rise, starting torque, maximum torque and so on. The detection of these items must be the same or similar to the actual working conditions, and there should be no big difference. For ordinary motors, the general motor test station can fully meet the requirements. However, for cryogenic motors, since the operating temperature (below -100°C) is much lower than room temperature, the resistance of the motor winding has changed greatly. The situation is seriously deviated, which loses the significance of the experiment.

[0003] In addition, the temperature rise test of the conventional motor is to measure the surface temperature of the motor with a thermometer. When the change of the surface ...

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