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Auxiliary starting system and method for vacuum furnace motor

A start-up system and vacuum furnace technology, which is applied in the direction of machine/engine, mechanical equipment, pump control, etc., can solve the problem of large start-up current of fans, and achieve the effect of solving large start-up current and reducing start-up current

Pending Publication Date: 2018-02-16
SHANGHAI HUISEN MTH INDAL FURNACES
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art, provide an auxiliary start-up system and method for vacuum furnace motors, and solve the problem of large fan start-up current caused by high-pressure gas in the existing vacuum furnace quenching process

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  • Auxiliary starting system and method for vacuum furnace motor
  • Auxiliary starting system and method for vacuum furnace motor

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] refer to figure 1 , The invention provides an auxiliary starting system and method for a vacuum furnace motor, which is used to solve the problem that the power and starting current of the fan on the vacuum furnace are very large in a gas environment of 20 bar. The auxiliary starting system of the present invention makes full use of the stage of filling the vacuum furnace with high-pressure gas, and uses the charged high-pressure gas to drive the impeller of the fan to rotate. When the impeller reaches a certain speed, the fan is started, thereby reducing the starting current and saving energy consumption. , effectively solve the problem of large starting current of the fan. The auxiliary starting system and method of the vacuum furnace motor of the present invention will be described below in conjunction with the accompanying drawings....

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Abstract

The invention relates to an auxiliary starting system and method for a vacuum furnace motor. The system comprises an air conveying pipeline and a plurality of air injection pipes, wherein the air conveying pipeline is arranged in a vacuum furnace and close to an impeller of a fan, and the air conveying pipeline is in sealed connection with an air inflating pipeline in the vacuum furnace; and the air injection pipes are arranged on the air conveying pipeline and communicate with the air conveying pipeline, the plurality of air injection pipes are annularly arranged on the periphery of the impeller of the fan, and air injection ports on the air injection pipes are arranged corresponding to the impeller, and the impeller is pushed to rotate through the air sprayed out of the air injection ports. According to the auxiliary starting system, in the stage of inflating air to the vacuum furnace, the compressed air in the vacuum furnace is expanded to blow the impeller to rotate so that the fancan be provided a certain rotation speed before the electrifying is carried out, the starting current can be reduced when the fan is started, and for a double-speed electric starting motor of 45 kW / 200KW, the starting current can be reduced by about 20%.

Description

technical field [0001] The invention relates to the technical field of vacuum furnaces, in particular to an auxiliary starting system and method for vacuum furnace motors. Background technique [0002] In the gas quenching process of the vacuum furnace, it is necessary to fill the furnace with high-pressure gas and then start the fan. Since the quenching process often requires up to 20bar of gas to enhance the cooling effect, the power and starting current of the fan are very large. For a 200KW motor, the starting current is 5 to 6 times the usual, even with a soft starter, the effect is very poor. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, provide an auxiliary start-up system and method for vacuum furnace motors, and solve the problem of large fan start-up current caused by high-pressure gas in the existing vacuum furnace quenching process. [0004] The technical scheme for realizing the above-men...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
CPCF04D27/008
Inventor 曾爱群李琳
Owner SHANGHAI HUISEN MTH INDAL FURNACES
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