Constant torque load application soft start-up test method

Abstract

The invention discloses a soft startup testing method of torque-constant loading, which mainly solves the technical problems of the running safety and reliability of soft starting equipments, etc., and adopts the technical proposal which comprises the following testing steps: a device to be tested is connected; a loading device (a torque-constant loading device) is connected; an entire process from the zero-speed working condition to the working condition with the rated rotating speed of the device to be tested is selected, set up, started and tested, and related technical running parameters are recorded, thus finishing the testing. The soft startup testing method of the torque-constant loading is applicable to the tests of mechanical or electrical soft starting equipments of large-scale coal mine machineries.

Description

technical field [0001] The invention relates to a method for testing soft start equipment in large mechanical equipment in coal mines. Background technique: [0002] At present, many large-scale mechanical equipment used in coal mines, such as high-power long-moment belt conveyors, fans, water pumps, etc., must be started smoothly and slowly when starting to ensure reliable and safe operation of such large-scale equipment, and at the same time reduce damage to For the impact and fluctuation of the power grid, in response to the above technical requirements, the industry has researched and developed various supporting "smooth and slow start equipment" - that is, "soft start device". Devices and electric soft-start devices, etc.; the above-mentioned various types of soft-start devices, in the research and development appraisal, equipment finalization, verification in the production process, factory product qualification appraisal, etc., must be on the equipment (or products) i...

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Problems solved by technology

[0002] At present, many large-scale mechanical equipment used in coal mines, such as high-power long-moment belt conveyors, fans, water pumps, etc., must be started smoothly and slowly when starting to ensure reliable and safe operation of such large-scale equipment, and at the same time reduce damage to For the impact and fluctuation of the power grid, in response to the above technical requirements, the industry has researched and developed various supporting "smooth and slow start equipment" - that is, "soft start device". Devices and electric soft-start devices, etc.; the above-mentioned various types of soft-start devices, in the research and development appraisal, equipment finalization, verification in the production process, factory product qualification appraisal, etc., must be on the equipment (or products) in the corresponding large mechanical equipment Only when the actual operating conditions are matched can an accurate judgment be made on whether the soft start device meets the technical requirements of the corresponding standards and the actual needs of coal mine operations; however, large mechanical equipment used in coal mines has a large size and complex structure. It is extremely difficult economically and technically to check and test the matching of the soft start device, and it is an unacceptable test method. Therefore, the existing identification and verification of the soft start device are all under non-actual working conditions. As for whether these soft-start equipment can start smoothly and slowly under the set load, especially whether the large-scale coal mine machinery and equipment used in important places can realize the soft-start function, there are uncertainties. The predicted hidden dangers will bring serious safety problems to coal mine production

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