CN218274490U

CN218274490U - Energy storage tripping device for electric arc furnace steelmaking

Info

Publication number: CN218274490U
Application number: CN202222549367.1U
Authority: CN
Inventors: 金国; 武建新; 陈祥俤; 蒋海兵
Original assignee: Xinjiang Xin'an Special Steel Co ltd
Current assignee: Xinjiang Xin'an Special Steel Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-10
Anticipated expiration: 2032-09-23

Abstract

The utility model relates to steel-smelting furnace protection device technical field, concretely relates to electric arc furnace steelmaking energy storage trip gear, including wiring circuit, energy memory, release and alarm device, wherein the wiring circuit includes interchange wiring circuit and direct current wiring circuit, not only can detect interchange low voltage circuit when using, also can detect direct current low voltage circuit, has the general advantage of alternating current-direct current, installs alarm device simultaneously and has reminded the user and carried out the high-tension electricity tripping action, and convenient to use person in time discovers the trouble.

Description

Energy storage tripping device for electric arc furnace steelmaking

Technical Field

The utility model relates to a steelmaking furnace protection technical field, concretely relates to electric arc furnace steelmaking energy storage trip gear.

Background

In the current metallurgical industry, electric arc furnaces are used for metal smelting, and the electric arc furnaces are used for power supply required in steel making, including high voltage power supplies for generating electric arcs, and lower voltage power supplies for other mechanical equipment and electrical systems. If a fault occurs in the low-voltage circuit, the high-voltage power supply used for smelting the electric arc furnace cannot be cut off in time when power fails, if the low-voltage circuit used for supplying water for cooling fails, the high temperature generated by the electric arc furnace which is not cooled can quickly damage a cooling device depending on the power supply of the low-voltage circuit, and great loss is caused. At present, an energy storage tripping device is mostly adopted for protection, and when a low-voltage circuit breaks down, the energy storage tripping device timely disconnects the high-voltage circuit. However, the current energy storage tripping device can only be used for detecting direct current or alternating current singly; meanwhile, after the tripping action is finished, a warning device is lacked to prompt a user, so that the fault of the low-voltage circuit is inconvenient to deal with in time.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model aims to provide an electric arc furnace steelmaking energy storage tripping device, which has simple structure, is suitable and convenient and can remind workers to execute tripping operation.

The utility model adopts the technical scheme as follows: an energy storage tripping device for steelmaking of an electric arc furnace comprises a wiring circuit, an energy storage device, a tripper and an alarm device; the wiring circuit comprises an alternating current wiring circuit and a direct current wiring circuit, and the alternating current wiring circuit comprises a primary induction coil, a secondary induction coil, a rectifying circuit and a filter capacitor; the alternating current wiring circuit and the direct current wiring circuit are electrically connected with the positive electrode and the negative electrode of the energy storage device; the energy storage device comprises a direct-current electromagnet and a first insulating pad and a second insulating pad of two poles of the electromagnet; the tripper comprises a fixed support, a positive terminal, a negative terminal, a first reed, a third insulating pad below the first reed and a first spring below the third insulating pad, wherein the positive terminal, the negative terminal and the first reed are arranged on the fixed support; the alarm device comprises an alarm power supply, an alarm electrically connected with the alarm power supply, a positive electrode interface, a negative electrode interface, a second reed, a fourth insulating pad above the second reed and a second spring on the fourth insulating pad, wherein the positive electrode interface, the negative electrode interface, the second reed, the fourth insulating pad and the second spring are arranged on the fixed support; the electromagnet is fixedly arranged on the fixed support, one pole of the electromagnet is opposite to the first spring and the first reed, and the other pole of the electromagnet is opposite to the second spring and the second reed.

It is worth to explain that, adopt the wire to connect in series between negative pole interface, alarm power, siren, the positive pole interface, negative pole interface and positive pole interface can pass through the second reed and connect to form the return circuit of alarm device.

Furthermore, the rectifying circuit is a bridge type rectifying circuit, and an input interface of the rectifying circuit is connected with the secondary induction coil.

Furthermore, the first insulating pad, the second insulating pad, the third insulating pad and the fourth insulating pad are all rubber pads, and the first insulating pad and the second insulating pad are respectively adhered to two poles of the electromagnet; a second insulating spacer between the first spring leaf and the first spring and a third insulating spacer between the second spring leaf and the second spring.

Furthermore, the reed is made of magnetic metal, and can be made of iron, cobalt and nickel materials.

Further, the alarm power supply is powered by a 12V direct current power supply.

And the final alarm comprises a buzzer and a warning lamp.

Has the beneficial effects that:

the utility model provides a pair of be convenient for electric arc furnace steelmaking energy storage trip gear, through setting up wiring circuit, energy memory, release and alarm device carry out the energy storage operation of tripping, wherein the wiring circuit includes alternating current wiring circuit and direct current wiring circuit, not only can detect the alternating current low voltage circuit when using, also can detect the direct current low voltage circuit, have the general advantage of alternating current-direct current, install alarm device simultaneously and remind the user to carry out the high-tension electricity tripping action, convenient to use person in time discovers the trouble.

Drawings

FIG. 1 is a schematic view of an energy storage tripping device for electric arc furnace steelmaking according to the present invention;

the alarm comprises a wiring circuit 1, a direct current wiring circuit 11, an alternating current wiring circuit 12, a primary induction coil 121, a secondary induction coil 122, a rectifying circuit 123, a filter capacitor 124, an energy storage device 2, an electromagnet 21, a first insulation pad 22, a second insulation pad 23, a release 3, a fixing support 31, a positive terminal 32, a negative terminal 33, a first reed 35, a third insulation pad 35, a first spring 36, an alarm device 4, an alarm power supply 41, an alarm 42, a buzzer 421, an alarm lamp 422, a positive interface 43, a negative interface 44, a second reed 45, a fourth insulation pad 46 and a second spring 47.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art all belong to the protection scope of the present invention.

The energy storage tripping device for steelmaking of the electric arc furnace shown in figure 1 comprises a wiring circuit 1, an energy storage device 2, a tripper 3 and an alarm device 4; the wiring circuit 1 comprises an alternating current wiring circuit 12 and a direct current wiring circuit 11, wherein the alternating current wiring circuit 12 comprises a primary induction coil 121, a secondary induction coil 122, a rectifying circuit 123 and a filter capacitor 124; the alternating current wiring circuit 12 and the direct current wiring circuit 11 are electrically connected with the positive electrode and the negative electrode of the energy storage device 2; the energy storage device 2 comprises a direct-current electromagnet 21 and a first insulating pad 22 and a second insulating pad 23 of two poles of the electromagnet 21; the release 3 comprises a fixed support 31, a positive terminal 32, a negative terminal 33, a first reed 34, a third insulating pad 35 below the first reed 34, and a first spring 36 below the third insulating pad 35 on the fixed support 31, wherein the first reed 34 is connected with the positive terminal 32; the alarm device 4 comprises an alarm power supply 41, an alarm 42 electrically connected with the alarm power supply 41, a positive electrode interface 43 mounted on the fixed support, a negative electrode interface 44, a second reed 45, a fourth insulating pad 46 above the second reed 45, and a second spring 47 on the fourth insulating pad 46, wherein the second reed 47 is connected with the positive electrode interface 43; the electromagnet 21 is arranged on the fixed bracket 31 and is positioned between the first spring plate 34 and the second spring plate 45, wherein one pole of the electromagnet 21 is opposite to the first spring 36 and the first spring plate 34, and the other pole is opposite to the second spring 47 and the second spring plate 45.

It should be noted that the negative interface 44, the alarm power source 41, the alarm 42, and the positive interface 43 are connected in series by wires, and the negative interface 44 and the positive interface 43 can be connected by the second spring 45 to form a loop of the alarm device.

It is also worth mentioning that the primary induction coil 121 and the secondary induction coil 122 are provided for the purpose of preventing the low-voltage alternating current from being excessively high in voltage for the electromagnet 21.

In this embodiment, the rectifying circuit 123 is a bridge rectifying circuit, and an input interface of the rectifying circuit 123 is connected to the secondary induction coil 122.

In this embodiment, the first insulating pad 22, the second insulating pad 23, the third insulating pad 35 and the fourth insulating pad 46 are all rubber pads, and the first insulating pad 22 and the second insulating pad 23 are respectively adhered to two poles of the electromagnet 21; a third insulating pad 35 is padded between the first spring 34 and the first spring 36 and a fourth insulating pad 46 is padded between the second spring 45 and the second spring 47.

In this embodiment, the reed is made of magnetic metal, such as iron, cobalt, or nickel.

In the present embodiment, the alarm power supply 41 is powered by a 12V dc power supply, and the alarm 42 includes a buzzer 421 and a warning light 422.

In this embodiment, it is worth to be noted that, when the electromagnet 21 is not energized, the first spring 36 and the second spring 47 on the fixing bracket 31 are at the original length, and the length of the first spring 36 is greater than the distance from the first insulating pad 22 on the electromagnet 21 to the negative terminal 33, that is, the first spring 34 and the negative terminal 33 are separated; when the second spring 47 is at the original length, the length of the second spring is greater than the distance from the second insulating pad 23 to the negative electrode interface 44, that is, the second spring 45 contacts with the negative electrode interface 44. When the electromagnet 21 is electrified, the first spring 36 is in a downward compression state, so that the first reed 36 is in contact with the negative terminal 33, and the circuit of the high-voltage lead is conducted; the second spring 47 is in an upward compressed state, and separates the second reed 45 from the negative electrode terminal 44, thereby breaking the circuit of the alarm device 4.

When the energy storage tripping device for steelmaking of the electric arc furnace is used, if a direct-current low-voltage power supply needs to be detected, the direct-current wiring circuit 11 is directly connected to the detected direct-current circuit; if the ac low-voltage power supply needs to be detected, the primary induction coil 121 of the ac wiring circuit 12 is connected to the detected ac circuit. Then, a high-voltage wire to be tripped is connected to the positive terminal 32 and the negative terminal 33 of the trip unit 3. After the circuits are connected, the electromagnet 21 is electrified to generate magnetic force, and the first reed 34 and the second reed 45 are attracted, so that the first reed 34 enables the first spring 36 to be compressed downwards, the first reed 34 is connected with the negative terminal 33, and a high-voltage lead is conducted; the second spring 45 compresses the second spring 47 upward, and the second spring 45 and the negative electrode contact 44 are disconnected. If the low-voltage circuit is broken, the electromagnet 21 loses magnetic force, the first spring 36 is in a compressed state, needs to recover the original length and bounces upwards, the first spring 34 is far away from the negative terminal 33, the circuit of the high-voltage lead is broken, and the tripping action is completed; the second spring 47 is compressed and needs to recover to the original length, and is popped up downwards, so that the second reed 45 moves downwards to contact the negative electrode interface 44, the circuit of the alarm device 4 is conducted, and the buzzer 421 and the warning lamp 422 work to prompt a user that the low-voltage circuit fails.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that fall within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an electric arc furnace steelmaking energy storage trip gear, includes wiring circuit, energy memory, release and alarm device, its characterized in that: the wiring circuit comprises an alternating current wiring circuit and a direct current wiring circuit, and the alternating current wiring circuit comprises a primary induction coil, a secondary induction coil, a rectifying circuit and a filter capacitor; the alternating current wiring circuit and the direct current wiring circuit are electrically connected with the positive electrode and the negative electrode of the energy storage device; the energy storage device comprises a direct-current electromagnet and a first insulating pad and a second insulating pad of two poles of the electromagnet; the tripper comprises a fixed support, a positive terminal, a negative terminal, a first reed, a third insulating pad below the first reed and a first spring below the third insulating pad, wherein the positive terminal and the negative terminal are arranged on the fixed support; the alarm device comprises an alarm power supply, an alarm electrically connected with the alarm power supply, a positive electrode interface, a negative electrode interface, a second reed, a fourth insulating pad above the second reed and a second spring on the fourth insulating pad, wherein the positive electrode interface, the negative electrode interface, the second reed, the fourth insulating pad and the second spring are arranged on the fixed support; the electromagnet is arranged on the fixed support, one pole of the electromagnet is over against the first spring and the first reed, and the other pole of the electromagnet is over against the second spring and the second reed.

2. The electric arc furnace steelmaking energy storage tripping device of claim 1, wherein: the rectifier circuit is a bridge rectifier circuit.

3. The electric arc furnace steelmaking energy storage tripping device of claim 1, wherein: the first insulating pad and the second insulating pad are both rubber pads.

4. The electric arc furnace steelmaking energy storage tripping device of claim 1, wherein: the reed is made of magnetic metal, and can be made of iron, cobalt and nickel materials.

5. The energy storage tripping device for electric arc furnace steelmaking according to claim 1, wherein: the alarm power supply is powered by a 12V direct current power supply.

6. The energy storage tripping device for electric arc furnace steelmaking according to claim 1, wherein: the alarm comprises a buzzer and a warning lamp.