CN214898319U - Novel drop switch for preventing line tripping fault - Google Patents

Abstract

The novel drop switch for preventing the line tripping fault. When overcurrent faults occur in the existing long fuse tube type drop switch, the fuse wire can be fused, pressure applied to the lower spring piece is released, the disconnected fuse wire pops out the fuse tube from the fuse wire through the spring piece elasticity of the lower moving contact, the popped fuse wire can be thrown to an iron tower or other phases, grounding or interphase short circuit faults are caused, the 35kV current collection circuit switch is triggered to trip, and the accident range is enlarged. The utility model discloses the constitution includes: insulating little full-length umbrella skirt (10), both ends are connected with copper chi (5) respectively about the insulating little full-length umbrella skirt, wherein the upper end be connected with high-pressure fusion tube (6) on the copper chi, high-pressure fuse (7) have been worn in the high-pressure fusion tube, the both ends of high-pressure fuse are respectively through bolt and copper chi crimping, install on the copper chi and prevent wind contact (3), prevent wind the contact and connect electrically conductive copper bar (2), install insulator (1) between the electrically conductive copper bar. The utility model is used for the prevention circuit tripping operation trouble.

Description

Novel drop switch for preventing line tripping fault

Technical Field

The utility model particularly relates to a novel be used for prevention circuit tripping operation trouble drop switch.

Background

The fall switch that wind-powered electricity generation field generally used at present is long fuse tube formula fall switch, generally by the insulator, contact conducting system and fusion tube etc. constitute from top to bottom, when the fall switch took place overcurrent fault, the fuse can fuse, the pulling force of fuse disappears, the pressure release of effect spring leaf under, the fuse of disconnection pops out the fusion tube with the fuse through the spring leaf elasticity of lower moving contact, the fuse that pops out can be got rid of to iron tower or other phases on, cause ground connection or alternate short-circuit fault, cause 35kV current collection circuit switch tripping operation, enlarge accident range.

Disclosure of Invention

The utility model aims at providing a novel be used for preventing circuit tripping operation trouble drop switch.

The above purpose is realized by the following technical scheme:

the utility model provides a novel be used for preventing line trip fault from falling switch, its constitution includes: the insulating little full-length umbrella skirt, both ends are connected with the copper chi respectively about the insulating little full-length umbrella skirt, wherein the upper end be connected with the high-pressure fusion tube on the copper chi, high-pressure fuse has worn in the high-pressure fusion tube, the both ends of high-pressure fuse are respectively through bolt and copper chi crimping, install on the copper chi and prevent wind the contact, prevent wind the contact and connect the conductive copper bar, install the insulator between the conductive copper bar, the conductive copper bar sub-unit connection operating ring on drop switch upper portion.

The novel be used for preventing circuit tripping operation trouble drop switch, be connected with the wiring end on the electrically conductive copper bar, the insulator middle part is connected with the regulation mounting panel, inside the little full skirt of insulation is the glass fiber stick.

Has the advantages that:

the utility model relates to a novel be used for preventing circuit tripping operation trouble drop switch, drop switch is by the insulator, contact conducting system and copper chi etc. from top to bottom and constitute, when the system takes place to overflow the trouble, the high-pressure fuse can fuse, the fracture produces electric arc in the high-pressure fuse pipe, electric arc high temperature causes arc extinguishing pipe inner wall to produce a large amount of gases, high-pressure gas is to the high-speed blowout of outside of tubes, blow out electric arc, the fuse melts the back, the pulling force of fuse disappears, the fuse pipe pops open under the spring action, form obvious breaking position, because high-pressure fuse length shortens, when taking place to overflow the protection action, only this fuse fuses mutually, only can lead to this fan that drop switch takes to have a power failure, can avoid enlarging fault range's incident emergence, reliable structure, effectively improve current collection circuit stability.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a long-fuse tube type drop switch;

wherein: 1. insulator, 2, conductive copper bar, 3, windproof contact, 4, operating ring, 5, copper ruler, 6, high-voltage fusion tube, 7, high-voltage fuse, 8, specified mounting plate, 9, wiring end, 10 and small insulating umbrella skirt.

The specific implementation mode is as follows:

example 1:

the utility model provides a novel be used for preventing line trip fault from falling switch, its constitution includes: insulating little full-length umbrella skirt 10, both ends are connected with copper chi 5 respectively about the insulating little full-length umbrella skirt, wherein the upper end be connected with high-pressure fusion tube 6 on the copper chi, high-pressure fuse 7 has worn in the high-pressure fusion tube, the both ends of high-pressure fuse are respectively through bolt and copper chi crimping, install on the copper chi and prevent wind contact 3, prevent wind contact connection conductive copper bar 2, install insulator 1 between the conductive copper bar, fall conductive copper bar sub-unit connection operating ring 4 on switch upper portion.

Example 2:

according to the novel drop switch for preventing the line tripping fault, disclosed by the embodiment 1, the conductive copper bar is connected with the wiring terminal 9, the middle part of the insulator is connected with the specified mounting plate 8, and the inside of the small insulating umbrella skirt is provided with the glass fiber rod;

novel drop switch comprises insulator, upper and lower contact conducting system and copper chi etc. and copper chi middle part is equipped with insulating little full skirt, and insulating little full skirt is inside to be the glass fiber stick, has effectively increased a copper chi insulating properties, and when the fuse normally operated, the high-pressure fusion tube forms the closed position with the help of behind the high-pressure fuse tensioning. When the system has overcurrent faults, the high-voltage fuse wire can be fused, the fracture generates electric arcs in the high-voltage fuse tube, the high temperature of the electric arcs causes the inner wall of the high-voltage arc extinguishing tube to generate a large amount of gas, the high-voltage gas is sprayed out of the high-voltage fuse tube at high speed to blow out the electric arcs, after the high-voltage fuse wire is fused, the tensile force of the high-voltage fuse wire disappears, the high-voltage fuse tube bounces off under the action of the spring, and an obvious breaking position is formed. Because the length of the high-voltage fuse wire is shortened, when overcurrent protection action occurs, only the phase fuse wire is fused, only the blower brought by the drop switch is powered off, other faults cannot be caused, and the stability of the current collecting circuit is greatly improved.

Claims (2)

1. The utility model provides a novel be used for preventing line trip fault from falling switch, its constitution includes: insulating little full skirt, characterized by: the upper end and the lower end of the small insulating umbrella skirt are respectively connected with a copper ruler, the upper end of the small insulating umbrella skirt is connected with a high-voltage fuse tube on the copper ruler, a high-voltage fuse wire penetrates through the high-voltage fuse tube, the two ends of the high-voltage fuse wire are respectively in compression joint with the copper ruler, a windproof contact is installed on the copper ruler, the windproof contact is connected with a conductive copper bar, an insulator is installed between the conductive copper bars, and the conductive copper bar on the upper portion of the drop switch is connected with an operation ring.

2. The novel line trip fault protection drop switch of claim 1, wherein: the insulating small umbrella skirt is characterized in that a wiring end is connected to the conductive copper bar, a specified mounting plate is connected to the middle of the insulator, and a glass fiber rod is arranged inside the insulating small umbrella skirt.

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