CN201084649Y - A disengaging gear for on arrester - Google Patents

Abstract

The utility model discloses a separation device used on a lightning arrester, which comprises an insulating shell, wherein a lower metal wiring end is fixed at one end of the insulating shell and is electrically connected with a high-voltage end of the lightning arrester; the other end of the insulating shell is fixed with an upper metal wiring terminal which is used for being connected with a protected power grid system, a conducting wire is connected between the lower metal wiring terminal and the upper metal wiring terminal, a magnetic ring for the conducting wire to penetrate through is arranged in the insulating shell, coils are uniformly wound on the magnetic ring, and two ends of each coil are connected with an ignition blasting system. When the lightning arrester breaks down, a large current flows through the conducting wire, the large current generates voltage on the coil through the electromagnetic action on the magnetic ring to act on the ignition blasting system, and the ignition blasting system is detonated under the action of the voltage, so that the whole separation device explodes, the purpose of separating the lightning arrester from a protected power grid system is achieved, and the safe and normal operation of the power grid system is protected.

Description

A detachment device for lightning arrester

[technical field]

The utility model relates to a detachment device, in particular to a detachment device used on a lightning arrester.

[Background technique]

In order to disconnect the lightning arrester from the protected grid system in time when the lightning arrester fails, a disconnection device is generally placed on the lightning arrester. At present, most of the disconnecting devices used on arresters are short-circuited to the ground through high voltage, and the explosives are ignited by the generated arc to achieve the purpose of separating the arrester from the protected power grid system. It has a certain protective effect, but it has the following disadvantages: 1. When the voltage exceeds twice the voltage of the arrester, it is easy to malfunction, and the unfaulted arrester is separated from the protected power grid system; 2. When the user transfers It is not possible to verify that the product is valid at this time. For this reason it is necessary to improve the prior art.

[utility model content]

The utility model overcomes the disadvantages of the above-mentioned technologies, and provides a detachment device which has a simple structure and can accurately judge the fault of the lightning arrester.

In order to achieve the above object, the utility model adopts the following technical solutions:

A detachment device for a lightning arrester, comprising an insulating casing, a lower metal terminal connected to the lightning arrester is fixed at one end of the insulating casing, and an upper metal connection connected with a protected grid system is fixed at the other end of the insulating casing There is a wire connected between the lower metal terminal and the upper metal terminal, which is characterized in that: a magnetic ring for the wire to pass is arranged inside the insulating housing, and a magnetic ring that can generate an induced current is wound on the magnetic ring. A coil connected to an ignition blasting system that can be ignited by the heat generated by the coil.

The above-mentioned disconnecting device for the arrester is characterized in that: the lower metal terminal is a metal block or a metal lead.

The above-mentioned disconnecting device for the arrester is characterized in that: the upper metal terminal is a metal block or a metal lead.

The above-mentioned disconnecting device for the lightning arrester is characterized in that: the top of the upper metal terminal is fork-shaped.

The above-mentioned disconnecting device for the arrester is characterized in that: the coil is wound by an enameled wire.

The above-mentioned disconnecting device for the arrester is characterized in that: the insulating housing is integrally cast.

The beneficial effects of the utility model are: since a magnetic ring for the wire to pass is arranged inside the insulating shell, a coil is wound on the magnetic ring, and an ignition blasting system is connected at both ends of the coil, so when the lightning arrester breaks down , the wire will flow a large current, and the large current will generate a voltage on the coil through the electromagnetic effect on the magnetic ring, which will act on the ignition and blasting system. The purpose of disconnecting from the protected grid system, thus protecting the safety and normal operation of the grid system.

[Description of drawings]

Below in conjunction with accompanying drawing and embodiment of the present utility model, further describe in detail:

Fig. 1 is the sectional structural diagram of the utility model;

Fig. 2 is the schematic diagram that the utility model is installed on the lightning arrester;

Fig. 3 is a schematic diagram of circuit principle of the present utility model.

[Detailed ways]

As shown in Figure 1-3, the utility model is a detachment device for lightning arresters, which includes an insulating shell 1, and a lower metal terminal 2 is fixed at one end of the insulating shell 1, which can be a metal block or Metal leads, the lower metal terminals 2 are electrically connected to the high-voltage end of the lightning arrester 8; an upper metal terminal 3 is fixed on the other end of the insulating housing 1, which can be a metal block or a metal lead, and the top of the upper metal terminal 3 is Fork type for easy connection to grid system. The upper metal terminal 3 is used to connect with the protected power grid system, a wire 4 is connected between the lower metal terminal 2 and the upper metal terminal 3, and a hole for the wire 4 to pass through is arranged inside the insulating casing 1. The magnetic ring 5 is evenly wound with a coil 6 , and the coil 6 is wound by an enameled wire in the utility model. The two ends of the coil 6 are connected with an ignition and blasting system 7. When the arrester fails, a large current will flow through the wire 4, and the large current will pass through the electromagnetic effect on the magnetic ring 5, and a voltage will be generated on the coil 6 to act on the ignition and blasting system. 7, the ignition and blasting system is detonated under the action of the voltage, so that the entire detachment device explodes, and the purpose of detaching the arrester 8 from the protected power grid system is achieved, thereby protecting the safety and normal operation of the power grid system.

The insulating shell 1 of the utility model is integrally cast and formed. When the utility model is assembled, the lower metal terminal 2, the upper metal terminal 3, the wire 4, the magnetic ring 5, the coil 6, and the ignition and blasting system 7 are placed in a certain position, and then poured on the outside of them once. The insulating material forms the release device after cooling, and the insulating material forms the insulating housing 1 .

Claims (6)

1. A detachment device for a lightning arrester, comprising an insulating housing (1), a lower metal terminal (2) connected to the lightning arrester is fixed at one end of the insulating housing (1), and the insulating housing (1) The other end is fixed with an upper metal terminal (3) connected to the protected power grid system, and a wire (4) is connected between the lower metal terminal (2) and the upper metal terminal (3), which is characterized in that: The body (1) is provided with a magnetic ring (5) for the wire (4) to pass through, and a coil (6) capable of generating an induced current is wound on the magnetic ring (5), and the coil (6) is connected with a An ignition blasting system (7) that can be ignited by the heat generated by the coil (6). 2. A detachment device for a lightning arrester according to claim 1, characterized in that: the lower metal terminal (2) is a metal block or a metal lead. 3. A detachment device for a lightning arrester according to claim 1, characterized in that: the upper metal terminal (3) is a metal block or a metal lead. 4. A detachment device for a lightning arrester according to claim 1 or 3, characterized in that the top end of the upper metal terminal (3) is fork-shaped. 5. A detachment device for a lightning arrester according to claim 1, characterized in that: said coil (6) is wound by enameled wire. 6. A detachment device for a lightning arrester according to claim 1, characterized in that: the insulating housing (1) is integrally cast.

Images