Outdoor high-voltage isolating switch sensing finger pressure tester

A high-voltage isolating switch and tester technology, which is applied to the measurement of the properties and forces of piezoelectric devices, can solve problems such as inability to measure, inaccurate, and unscientific testing methods, and achieve measurement error, high measurement accuracy, and weight. light effect

Active Publication Date: 2008-07-30
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The contact pressure and its distribution of the contacts of the high-voltage isolation switch are important parameters affecting its current-carrying performance, but it cannot be effectively measured at present
In the past, in the detection of contact finger pressure of isolating switches, most manufacturers used ordinary spring scales for measurement, and the power operation department could only rely on the experience of maintenance personnel, such as the number of turns of the shear force isolating switch and the number of turns of the afterburner handle, the plug-in type Estimate the size of the contact

Method used

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  • Outdoor high-voltage isolating switch sensing finger pressure tester
  • Outdoor high-voltage isolating switch sensing finger pressure tester
  • Outdoor high-voltage isolating switch sensing finger pressure tester

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Embodiment Construction

[0025] As shown in FIG. 1 , the tester is mainly composed of a moving contact analog regulator and a measurement display 19 . Referring to Fig. 2, the pressure sensor is a flexible wave mode pressure sensor 17; referring to Fig. 3 and Fig. 4, there is also a moving contact analog regulator: two cuboid sliders 4, 5 for transmitting pressure are respectively arranged in a sliding fit In the through hole through the upper and lower bottom surfaces of the chute 3, two screws 1, 2 used to adjust the width of the two static contact fingers are respectively screwed on the screw holes on the upper and lower bottom surfaces of the two sliders 4, 5, The two limit baffles 6 and 7 located between the two sliders are erected in parallel on the concave rectangular opening 3a on the bottom surface of the chute 3, and are respectively fixed on the two sliders 4 and 5 via two bolts 8. (Figure 3 shows that there are pin holes 5a, 5b on the slider), the tubular handle body 12 is fixed on the rig...

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Abstract

The invention provides a sensing finger pressure tester of an outdoor high voltage isolator. A flexible diaphragm pressure sensor, a moving contact simulating adjustor and a measuring display form an integral device. The moving contact simulating adjustor comprises a handle, a tubular handle body, an on position indicating slider, a moving contact width adjusting screw nut, a sliding block, a sliding chute, a limit baffle, etc. The invention has the advantages of small volume, light weight, reasonable structure, and reliable test data. The invention can be used as the sensing finger pressure tester of the high voltage isolator arranged newly or inspected and pretested. The invention mainly aims at the high voltage isolators with different voltage classes and rated current specifications, such as GW4, GW5, GW7, GW31, GW25, GW27, GW33, GW43, GW26, etc., is in particular suitable for using during the on-site work high above the ground.

Description

technical field [0001] The invention relates to a test and detection device for electric power engineering, in particular to testing equipment for contact finger pressure of an outdoor AC high-voltage isolating switch in electric power engineering. Background technique [0002] The outdoor high-voltage isolating switch is the primary equipment that is completely exposed to the atmospheric environment and is most directly and seriously affected by the environmental climate conditions. The contact fingers and contacts of the high-voltage isolating switch are movable contacts. If the installation quality or the spring that provides the contact finger pressure is annealed due to corrosion and current heating due to poor contact, the contact resistance will increase and cause heat. In addition, the surface of the contact is attacked by rainwater, dust and harmful gases, and some oxide surface films will be produced. These surface films are almost non-co...

Claims

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Application Information

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IPC IPC(8): G01L1/16
Inventor 李晶陈贤顺胡灿丁丹一曹永兴
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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