Intelligent fuse

Abstract

The utility model relates to an intelligent fuse, which comprises a cylinder, a first copper bar, a second copper bar, a lead, a partition plate, conductive electrodes, explosives and a programmable circuit board, the first copper bar and the second copper bar are arranged at two ends of the cylinder through flanges, and the conductive electrodes are oppositely arranged in the cylinder and connected with the first copper bar and the second copper bar. The partition plate is arranged on the conductive electrodes in a sleeving mode, the explosive is arranged on the partition plate and located between the two conductive electrodes, one end of the lead is electrically connected with the output end of the programmable circuit board, and the other end of the lead penetrates through the flange at the position of the first copper bar to extend into the cylinder to be connected with the explosive. The input end of the programmable circuit board is electrically connected with a main circuit where the intelligent fuse is located. The circuit breaker has the advantages that the current in the main circuit is detected through the current detection circuit, explosives are detonated through the pulse ignition circuit to realize circuit breaking, and the circuit breaking current can be accurately controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuse technology field especially relates to an intelligent fuse. BACKGROUND

[0002] The metal conductor in the traditional fuse will heat when the current is too large, and finally the metal conductor is fused to realize circuit breaking. The structure and process of the traditional fuse are simple, and the cost is low, but the fuse current and the fuse time cannot be accurately controlled. SUMMARY

[0003] The utility model mainly solves above -mentioned problem, provides an intelligent fuse that can accurate control fuse current.

[0004] The utility model discloses a kind of intelligent fuses, including cylinder, first copper bar, second copper bar, lead, baffle, conducting electrode, explosive and programmable circuit board, the first copper bar and second copper bar are set in cylinder both ends by flange, the conducting electrode is oppositely set in cylinder and is connected first copper bar and second copper bar, the baffle is set on conducting electrode, the explosive is set on baffle and between two conducting electrodes, the lead one end is electrically connected with programmable circuit board output end, lead other end passes through the flange at first copper bar and is connected with explosive into cylinder, the input end of programmable circuit board is electrically connected with the main circuit of intelligent fuse.

[0005] As a preferred scheme of the above scheme, the programmable circuit board is provided with current detection circuit and pulse ignition circuit, the current detection circuit detects the current in the main circuit, and the pulse ignition circuit ignites the explosive through the lead when the current is greater than the threshold value.

[0006] As a preferred scheme of the above scheme, the baffle is close to second copper bar and is set, and the baffle and second copper bar are pressure relief zone.

[0007] As a preferred scheme of the above scheme, the flange of second copper bar is provided with pressure relief hole.

[0008] As a preferred scheme of the above scheme, the conducting electrode is provided with a plurality of equidistant through holes.

[0009] As a preferred scheme of the above scheme, the baffle shape is matched with cylinder, the baffle is provided with slot for conducting electrode, the baffle middle part is provided with explosive bearing plate, and the explosive bearing plate and baffle are connected by weak connection belt.

[0010] The utility model has the advantages that: the current detection circuit detects the current in the main circuit and ignites the explosive through the pulse ignition circuit to break the conducting electrode and realize circuit breaking, and the circuit breaking current can be accurately controlled. Attached Figure Description

[0011] Fig. 1 This is a schematic diagram of the structure of an intelligent fuse.

[0012] Fig. 2 This is a schematic diagram of the internal structure of a smart fuse.

[0013] Fig. 3 This is a schematic diagram of the exploded structure of a smart fuse.

[0014] 1-Cylinder body 2-First copper busbar 3-Second copper busbar 4-Lead wire 5-Flange 6-Conductive electrode 7-Baffle plate 8-Through hole 9-Explosive carrier plate 10-Pressure relief hole. Detailed Implementation

[0015] The technical solution of this utility model will be further described below through embodiments and in conjunction with the accompanying drawings.

[0016] Example:

[0017] This embodiment describes a smart fuse, such as... Figs. 1 to 3 As shown, the device includes a cylinder 1, a first copper busbar 2, a second copper busbar 3, a lead wire 4, a partition 7, conductive electrodes 6, explosives, and a programmable circuit board. The first copper busbar 2 and the second copper busbar 3 are located at opposite ends of the cylinder 1 via flanges 5. The conductive electrodes 6 are positioned opposite each other within the cylinder 1 and connect the first copper busbar 2 and the second copper busbar 3. The partition 7 is fitted over the conductive electrodes 6. The explosives are placed on the partition 7 and positioned between the two conductive electrodes 6. One end of the lead wire 4 is electrically connected to the output terminal of the programmable circuit board, and the other end of the lead wire 4 passes through the flange 5 at the first copper busbar 2 and extends into the cylinder 1 to connect with the explosives. The input terminal of the programmable circuit board is electrically connected to the main circuit containing the intelligent fuse. The programmable circuit board is equipped with a current detection circuit and a pulse ignition circuit. The current detection circuit detects the current in the main circuit. When the current exceeds a threshold, the pulse ignition circuit detonates the explosives through the lead wire. The fuse current can be set by editing the programmable circuit board.

[0018] The cylinder is cylindrical and made of ceramic. The shape of the baffle plate matches the cross-section of the cylinder and is circular. The baffle plate 7 is located near the second copper busbar 3, and the area between the baffle plate 7 and the second copper busbar 3 is a pressure relief zone. The flange of the second copper busbar 3 is provided with a pressure relief hole 10. The baffle plate 7 has a slot for the conductive electrode 6 to pass through. An explosive bearing plate 9 is located in the middle of the baffle plate 7. The explosive bearing plate 9 is connected to the baffle plate 7 by a weak connecting strip. In addition, several equally spaced through holes 8 are provided on the conductive electrode 6. The through holes 8 can reduce the explosive force required to break the conductive electrode.

[0019] The intelligent fuse in the embodiment, the first copper bar and the second copper bar are connected in series in the main circuit, the current detection circuit on the programmable circuit board is electrically connected with the main circuit, the current detection circuit can accurately detect the current in the main circuit, when the current value is greater than a threshold value, the pulse ignition circuit sends an ignition signal to detonate the explosive through a lead, and the electrically-conductive electrode is broken by the explosive, so that the main circuit is disconnected. When the explosive explodes, the explosive carrier plate 9 will be separated from the partition plate under the action of the explosion and enter the pressure relief area, so that the shock wave generated by the explosion can be discharged from the pressure relief hole 10, preventing the cylinder from being blown apart.

[0020] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. An intelligent fuse, characterized by: The application relates to a smart fuse, which comprises a cylinder, a first copper bar, a second copper bar, a lead wire, a partition plate, a conductive electrode, an explosive and a programmable circuit board, the first copper bar and the second copper bar are arranged at two ends of the cylinder through flanges, the conductive electrodes are oppositely arranged in the cylinder and are connected with the first copper bar and the second copper bar, the partition plate is sleeved on the conductive electrode, the explosive is arranged on the partition plate and is located between the two conductive electrodes, one end of the lead wire is electrically connected with an output end of the programmable circuit board, the other end of the lead wire penetrates through the flange at the first copper bar and extends into the cylinder to be connected with the explosive, and an input end of the programmable circuit board is electrically connected with a main circuit of the smart fuse.

2. The intelligent fuse of claim 1, wherein: The programmable circuit board is provided with a current detection circuit and a pulse ignition circuit, the current detection circuit detects the current in the main circuit, and when the current is greater than a threshold value, the pulse ignition circuit ignites the explosive through the lead wire.

3. The intelligent fuse of claim 1, wherein: The partition plate is arranged close to the second copper bar, and a pressure relief area is arranged between the partition plate and the second copper bar.

4. The intelligent fuse of claim 3, wherein: A pressure relief hole is arranged on the flange of the second copper bar.

5. The intelligent fuse of claim 1, wherein: A plurality of equidistant through holes are arranged on the conductive electrode.

6. The intelligent fuse of claim 1, wherein: The partition plate is matched with the cylinder in shape, a slot is arranged on the partition plate for the conductive electrode to pass through, a middle part of the partition plate is provided with an explosive bearing plate, and the explosive bearing plate is connected with the partition plate through a weak connecting belt.

Images