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Detection apparatus used for simulating impact of coil on platen in short circuit of transformer

A technology for simulating transformers and detection devices, applied to measuring devices, instruments, scientific instruments, etc., can solve problems such as damage to pressing plate components, and achieve high vertical accuracy and high position accuracy

Active Publication Date: 2015-12-16
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the coil is accidentally short-circuited, the short-circuit conditions of different coils will produce different impact forces, and even cause damage to the pressing plate assembly

Method used

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  • Detection apparatus used for simulating impact of coil on platen in short circuit of transformer
  • Detection apparatus used for simulating impact of coil on platen in short circuit of transformer
  • Detection apparatus used for simulating impact of coil on platen in short circuit of transformer

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Embodiment 1

[0147] Such as figure 1 As shown, a detection device of the present invention for simulating the impact of the coil on the pressure plate when the transformer is short-circuited, the device includes a support frame composed of a hammer head 1 arranged in the horizontal direction, a base 7 and guide assemblies arranged vertically on both sides thereof, a hydraulic system and In the measurement control system, the fixture 5, the sensor 4 and the force transmission frame 3 are stacked coaxially on the base 7 in sequence, and the waveform generator 2 is uniformly arranged on the upper surface of the force transmission frame 3.

[0148] The hammer head 1 is a blow bar with a vertical through hole in the center, and a through hole assembly through which the guide assembly is provided on both sides, and triangular oblique ribs are provided on the other two sides in the vertical direction. Hammer head 1 is made of Q345B steel with yield strength ≥ 345MPa.

[0149] The tup 1 comprises...

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Abstract

The invention provides a detection apparatus used for simulating the impact of a coil on a platen in a short circuit of a transformer. The apparatus comprises a horizontally arranged hammerhead, a base, a bracing frame composed of guiding assemblies vertically arranged at two sides of the base, a hydraulic system and a measurement control system, wherein a clamp, a sensor and a force transmission rack are coaxially piled up on the base in sequence, and the upper surface of the force transmission rack is uniformly provided with waveform generators. The apparatus can simulate coil impact effects under the working conditions of individual operation of high-tension or low-tension coils or combined operation of high-tension and low-tension coils, avoids the limitation of simulation of only combined operation of coils, and can simulate actual impact conditions and magnitude and meet requirements of detection of multiple types of platens; the apparatus is simple in structure and manufacturing, low in cost and easy in installation and dismounting; the apparatus is provided with a through hole extending from top to bottom, which facilitates observation of the states of a detected sample in the process of detection; and the apparatus is provided with multiple safety protection measures, so in multiple aspects, the hammerhead is prevented from harming workers and the apparatus due to accidental falling during working of the apparatus.

Description

technical field [0001] The invention relates to a device, in particular to a detection device for a coil impacting a pressure plate when a transformer is short-circuited. Background technique [0002] The transformer pressure plate component is an important component of the transformer. According to the requirements of GB1094.5-2008 "Power Transformer Part 5: Capability to Withstand Short Circuit", the transformer pressure plate must be able to withstand the impact force generated when the coil is accidentally short-circuited, and the yield limit of the pressure plate must be ≥ 80MPa. [0003] The structure of the pressure plate assembly of the transformer is complex, and the stress concentration points generated by different structures are different. The transformer is generally composed of high-voltage coils, medium-voltage coils, low-voltage coils and voltage regulating coils. The contact area and installation method of each coil and the pressure plate assembly not exact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/303
Inventor 赵志刚李金忠高飞郭锐仇宇舟汪可孙倩吴超徐曼丁奕斌
Owner CHINA ELECTRIC POWER RES INST
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