Special hydraulic insulated shearing tool for relay protection small bus

A technology of relay protection and small bus, which is applied in the direction of electrical components, switchgear, etc., can solve the problems of endangering the safe and stable operation of the power system, the protection device refuses to operate or malfunctions, and the shearing section is not neat, so as to facilitate popularization and use , to avoid short circuit, the effect of fast shearing speed

Inactive Publication Date: 2011-09-28
XUCHANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the replacement of the insurance by the operator, if there is a power failure, it will cause the protection device to refuse or malfunction, endangering the safe and stable operation of the power system
Therefore, the curren...

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  • Special hydraulic insulated shearing tool for relay protection small bus
  • Special hydraulic insulated shearing tool for relay protection small bus

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Embodiment Construction

[0010] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing and specific embodiment, but protection scope of the present invention is not limited thereto:

[0011] As shown in the attached figure, the special hydraulic insulation shearing tool for relay protection small busbars: it includes a grooved bottom plate 1 with a side hole 8, and the grooved bottom plate 1 is fastened with a one-way acting spring return hydraulic cylinder 2, the single The spring reset hydraulic cylinder 2 is composed of a cylinder body 21, a piston rod 22, a spring 23, and an oil circuit switch 24, wherein the oil circuit switch 24 is arranged outside the cylinder body 21, and the piston rod 22 is arranged inside the cylinder body 21, and A spring 23 is sheathed on the piston rod 22 inside the cylinder 21 . The end of the piston rod 22 of the one-way acting spring return hydraulic cylinder 2 is pierced in the side hole 8, the end of the p...

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Abstract

The invention belongs to the technical field of shearing of relay protection small buses, and discloses a special hydraulic insulated shearing tool for a relay protection small bus. The shearing tool comprises a groove-shaped bottom plate provided with a lateral hole, the groove-shaped bottom plate is fastened and connected with a unidirectional acting spring reset hydraulic cylinder, the end of a piston rod of the unidirectional acting spring reset hydraulic cylinder passes through the lateral hole, the end of the piston rod is fastened and connected with a cutter head, the end of the unidirectional acting spring reset hydraulic cylinder is fastened and connected with a fixed handle and movably connected with a hydraulic handle through at least two pivots, wherein one pivot is movably connected with a plunger piston, and the plunger piston is positioned in the unidirectional acting spring reset hydraulic cylinder; and except the cutter head, the whole exterior of the shearing tool is provided with an insulated layer. The shearing tool is simple in principle, convenient to manufacture, small in volume, light in weight, safe and convenient to carry and use, high in shearing speed and efficient, saves the time, has low cost, and is convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of cutting relay protection small busbars, and in particular relates to a special hydraulic insulation cutting tool for relay protection small busbars. Background technique [0002] During the "Eleventh Five-Year Plan" period, the State Grid Corporation of China took "replacing secondary system equipment such as relay protection and stability control devices with backward technology and major defects" as one of the important contents of power grid technical transformation. The task of transformation and upgrading is very heavy. In the process of relay protection replacement, it is often necessary to cut off the AC and DC small busbars connected between the protection screens. Relay protection AC and DC small busbars provide PT AC voltage and AC and DC power for relay protection devices; copper rods with a diameter of 8MM are mostly used, with a rod spacing of 2CM, two upper and lower layers, and a layer spa...

Claims

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Application Information

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IPC IPC(8): B21F11/00H02B3/00
Inventor 库永恒张红涛王志伟宋寒李兵刘丙申李宏智刘斌
Owner XUCHANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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