Mechanical device for automatic output voltage regulator for transformer tap switch

Abstract

The invention provides a mechanical device for an automatic output voltage regulator for a transformer tap switch. The mechanical device is arranged at the top part of a tap switch (29) and comprises a regulating rotating shaft (22) of the tap switch, a gear positioning tooth (31) and a latch (30); the mechanical device is characterized in that the top end of the regulating rotating shaft (22) of the tap switch passes through a rotating shaft perforating hole of a fixed substrate (26); a substrate fixing ring (21) and a nut sleeve the regulating rotating shaft; the fixed substrate is positioned through upper and lower clamping; the fixed substrate is provided with a positive and negative rotation stepper motor (24) and a transmission part (25) of the positive and negative rotation stepper motor; the fixed substrate is also provided with an infrared transmitting tube and a receiving tube; the positive and negative rotation stepper motor is connected with the regulating rotating shaft through the transmission part; and the gear positioning tooth (31) and the latch (30) are oppositely arranged on the same plane. The mechanical device and a special matched electrical appliance are combined into the automatic regulator; and the mechanical device is applied to output voltage regulation of the transformer tap switch, has the advantages of being timely and fine in regulation and control, time-saving, labor-saving, safe and high in efficiency, and can be electrified and remotely controlled for automatic regulation.

Description

technical field [0001] The invention relates to a mechanical device of an automatic output voltage regulator of an off-excitation tap changer for an oil-immersed power transformer. Background technique [0002] The off-excitation tap-changer used in oil-immersed power transformers is used to adjust the output voltage. It is necessary for management personnel to visit the actual installation site of the transformer to adjust the output voltage manually. It also needs power-off operation, which affects the normal power consumption of the user end, and there are serious personal and electrical damages. Potential safety hazards, effective communication and remote automatic operation cannot be carried out, and the efficiency of voltage adjustment is low, time-consuming, and labor-intensive. It is difficult to adjust the output voltage in a timely and precise manner, which affects the quality of power supply. [0003] According to the article "New Disc Excitation Tap-Changer" writ...

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Problems solved by technology

[0002] The off-excitation tap-changer used in oil-immersed power transformers is used to adjust the output voltage. It is necessary for management personnel to visit the actual installation site of the transformer to adjust the output voltage manually. It also needs power-off operation, which affects the normal power consumption of the user end, and there are serious personal and electrical damages. Potential safety hazards, effective communication and remote automatic operation cannot be carried out, the efficiency of voltage adjustment is low, time-consuming, and labor-intensive, it is difficult to adjust the output voltage in a timely and precise manner, which affects the quality of power supply

[0003] According to the article "New Disc Excitation Tap-Changer" written by Liu Gang and Qin Wei published in the 7th issue of Volume 39 of "Transformer" magazine published in July 2002, there has been a reduction in the height of the disc switch transformer box cover since the end of the last century. , some have strengthened oil leakage sealing, and some have improved insulation materials, but there are no reports or real objects on the combination of remote control and automatic operation of tap changer output voltage electrical devices and special matching mechanical devices for remote control and automatic voltage regulation. market

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