CN113066688B - Fuse is used in self-resuming type circuit protection - Google Patents
Fuse is used in self-resuming type circuit protection Download PDFInfo
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- CN113066688B CN113066688B CN202110229030.XA CN202110229030A CN113066688B CN 113066688 B CN113066688 B CN 113066688B CN 202110229030 A CN202110229030 A CN 202110229030A CN 113066688 B CN113066688 B CN 113066688B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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Abstract
The invention discloses a self-recovery circuit protection fuse, which comprises a protection box, wherein the inner wall of the protection box is hermetically and slidably connected with an electric connection plate, the electric connection plate is connected with the inner wall of the protection box through a plurality of reset springs, the side wall of the electric connection plate is provided with a first electric connection block, the top in the protection box is provided with a sliding cavity, the inner walls of two ends of the sliding cavity are respectively and slidably connected with a second electric connection block and a convex block, the second electric connection block abuts against the electric connection plate, the second electric connection block is connected with the convex block through a connecting plate, the inner wall of the sliding cavity is welded with a plurality of guide pillars, and the guide pillars are all in penetrating sliding connection with the connecting plate. Has the advantages that: when the current is too big in the circuit, the magnetism slide can jack-up the lug to can realize that the second connects the electricity piece and connects the separation of electricity board, make the fuse be in the off-state, can play the guard action to the circuit, need not to adopt the heat to realize the disconnection of fuse moreover, can reduce the damage that the heat caused to the circuit.
Description
Technical Field
The invention relates to the technical field of fuses, in particular to a self-recovery type fuse for circuit protection.
Background
The fuse is an electrical appliance which fuses a melt by using heat generated by the fuse when the current exceeds a specified value and disconnects a circuit, is widely applied to high-low voltage distribution systems, control systems and electrical equipment, serves as a short-circuit and overcurrent protector and is one of the most commonly applied protective devices;
adopt the fuse to control during ordinary fuse in modern life, therefore need artificial change after the fuse disconnection, and in order to prevent the electric shock, the fuse is generally placed in higher position, therefore cause great trouble in the change, and the heat that current self recovery type fuse mostly all adopted self to produce makes its disconnection, treat to realize recovering after the heat scatters and disappears, and the heat that utilizes self to produce controls, can make the circuit temperature rise, can the life of greatly reduced circuit, for this, we have provided a not damaged formula self recovery type fuse for circuit protection.
Disclosure of Invention
The invention aims to solve the problem that a common fuse needs to be replaced and a self-recovery fuse affects a circuit in the prior art, and provides a self-recovery fuse for circuit protection.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a self-resuming type fuse for circuit protection, includes the protection box, protection box inner wall sealing sliding connection has the electroplax, connect the electroplax and pass through a plurality of reset spring connection with protection box inner wall, the lateral wall that connects the electroplax is provided with first electricity piece that connects, the sliding chamber has been seted up at protection box internal top, sliding chamber both ends inner wall sliding connection has second electricity piece and lug respectively, second electricity piece and the counterbalance of connecing the electroplax, second electricity piece and lug pass through the connecting plate and be connected, sliding chamber inner wall welding has a plurality of guide pillars, a plurality of guide pillar all run through gliding with the connecting plate and be connected, protection box inner wall is provided with first electro-magnet, protection box inner wall sealing sliding connection has the magnetism slide, the magnetism slide passes through connecting spring connection with the electricity board with the electricity, the inside adjusting device that is provided with of magnetism slide, the gas storage chamber has been seted up at the internal top of protection box, the inside of gas storage chamber is provided with delay device.
In the above self-recovery fuse for circuit protection, the delay device includes an air outlet slot and an air inlet slot which are arranged at the bottom in the air storage cavity, and the air outlet slot and the air inlet slot are both internally provided with one-way valves.
In the above self-recovery fuse for circuit protection, a sliding groove is formed in the side wall of the air inlet groove, a second electromagnet is arranged on the inner wall of the sliding groove, and the inner wall of the sliding groove is connected with a stop block made of a metal material in a sealing and sliding manner.
In the above self-recovery fuse for circuit protection, the adjusting device includes a through groove penetrating through the side wall of the magnetic sliding plate, a blocking groove is formed in the inner wall of the through groove, and a sliding plate is connected to the inner wall of the blocking groove in a sealing and sliding manner.
In the above-described self-recovery fuse for circuit protection, the side wall of the sliding plate is connected to the inner wall of the blocking groove by a compression spring, and a water passage groove is formed through the side wall of the blocking groove.
In the above self-recovery circuit protection fuse, the current transformation body is disposed inside the blocking slot, and the electric connection plate is made of an aluminum material.
Compared with the prior art, the invention has the advantages that:
1. when the current in the circuit is too large, the first electromagnet can drive the magnetic sliding plate to move, and the magnetic sliding plate can jack up the lug after reaching the position of the lug, so that the second electric connection block can be separated from the electric connection plate, the fuse is in a disconnection state, the circuit is disconnected, the circuit can be protected, the fuse is disconnected without heat, and the damage of the heat to the circuit can be reduced;
2. the slidable sliding plate and the water passing groove are arranged, so that the size of an opening of the water passing groove can be controlled according to the size of current, the moving time of the magnetic sliding plate can be controlled, the disconnection time of the fuse can be controlled according to the size of line current, the inverse time limit characteristic of the fuse can be effectively guaranteed, and the service life of the fuse can be guaranteed;
3. the normal movement of the magnetic sliding plate is realized by utilizing the circulation of gas in the gas storage cavity and the protection box, and the gas outlet groove is large relative to the opening of the gas inlet groove, so that the magnetic sliding plate can be slowly returned in the returning process, the circuit can be conveniently checked, and the return of the magnetic sliding plate and the power receiving plate can be realized, so that the recovery of the fuse can be realized, and the labor consumption for manually replacing the fuse can be effectively reduced;
4. and when the short circuit appears in the circuit, circuit current can the grow very big, make the water trough opening the biggest, make the removal of magnetism slide block lessly, thereby can realize the quick disconnection of fuse, and when the electric current was very big in the circuit, make the second electro-magnet adsorb the dog, make the air inlet duct be in the off-state, can't realize the circulation of protection box and gas storage intracavity portion gas, thereby make the unable normal position that resumes of magnetism slide, realize permanent outage, treat that the circuit inspection is accomplished the back, the pulling rope, remove the effect that blocks of dog to the air inlet duct, make the magnetism slide can resume the normal position, thereby can realize the recovery of fuse.
Drawings
Fig. 1 is a schematic structural diagram of a self-recovery circuit protection fuse according to the present invention;
FIG. 2 is a schematic structural diagram of a sliding chamber portion of a self-recovery circuit protection fuse according to the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
fig. 4 is a schematic structural diagram of a magnetic slider portion of a self-recovery circuit protection fuse according to the present invention.
In the figure: the device comprises a protection box 1, an electric plate 2, a reset spring 3, a first electric block 4, a sliding cavity 5, a second electric block 6, a convex block 7, a connecting plate 8, a guide pillar 9, a first electromagnet 10, a magnetic sliding plate 11, a connecting spring 12, a through groove 13, a gas storage cavity 14, a gas outlet groove 15, a gas inlet groove 16, a sliding groove 17, a second electromagnet 18, a stop block 19, a blocking groove 20, a sliding plate 21, a compression spring 22, a water through groove 23 and an electrorheological body 24.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1-4, a self-recovery circuit protection fuse, comprising a protection box 1, insulation treatment of the inner wall of the protection box 1, a sealed sliding connection of the inner wall of the protection box 1 with an electric connection plate 2, the electric connection plate 2 connected with the inner wall of the protection box 1 through a plurality of reset springs 3, a first electric connection block 4 arranged on the side wall of the electric connection plate 2, a left wall of the electric connection plate 2 connecting the first electric connection block 4 with a second electric connection block 6, insulation treatment of the other parts of the electric connection plate 2, a sliding cavity 5 arranged on the top of the protection box 1, a second electric connection block 6 and a projection 7 respectively connected with the inner wall of the sliding cavity 5 in a sliding manner, the second electric connection block 6 abutting against the electric connection plate 2, the second electric connection block 6 connected with the projection 7 through a connection plate 8, the welding of 5 inner walls in sliding chamber has a plurality of guide pillars 9, a plurality of guide pillars 9 all run through gliding being connected with connecting plate 8, protection box 1 inner wall is provided with first electro-magnet 10, first electro-magnet 10 and fuse intercommunication circuit intercommunication, protection box 1 inner wall sealing sliding connection has magnetism slide 11, magnetism slide 11 passes through coupling spring 12 with connecing electroplax 2 to be connected, the inside adjusting device that is provided with of magnetism slide 11, gas storage chamber 14 has been seted up at protection box 1's interior top, the inside delay unit that is provided with in gas storage chamber 14, 5 inner wall insulation treatment in sliding chamber, connecting plate 8 is the insulation board, can effectively avoid appearing the condition of electric leakage, the inside silicon oil that is provided with of protection box 1, for insulating liquid.
The delay device comprises an air outlet groove 15 and an air inlet groove 16 which are arranged at the bottom in the air storage cavity 14, and one-way valves are arranged in the air outlet groove 15 and the air inlet groove 16; sliding tray 17 has been seted up to the lateral wall of air inlet duct 16, sliding tray 17 inner wall is provided with second electro-magnet 18, second electro-magnet 18 passes through wire and fuse intercommunication circuit intercommunication, the sealed sliding connection of sliding tray 17 inner wall has dog 19 that metal material made, dog 19 passes through rope and outside intercommunication, it is big than air inlet duct 16's aperture to go out 15 aperture diameters of air outlet duct, make at 11 return in-process of magnetism slide, it is inside comparatively slow that gas gets into gas storage chamber 14 along air inlet duct 16, can make the fuse recover the process and have certain delay capacity, can be convenient for the inspection to problem position in the circuit, when preventing the quick return of fuse, the condition of overflowing once more appears, can play certain guarantee effect to the life of circuit and electrical apparatus.
The adjusting device comprises a through groove 13 penetrating through the side wall of the magnetic sliding plate 11, a blocking groove 20 is formed in the inner wall of the through groove 13, and a sliding plate 21 is connected to the inner wall of the blocking groove 20 in a sealing and sliding manner; the side wall of the sliding plate 21 is connected with the inner wall of the blocking groove 20 through a compression spring 22, and a water passing groove 23 is formed in the side wall of the blocking groove 20 in a penetrating mode; the current variant 24 is arranged in the blocking groove 20, the current variant 24 is communicated with a fuse communicating circuit through a lead, the electric connecting plate 2 is made of aluminum materials, the opening size of the water communicating groove 23 is controlled according to the current, the breaking reaction speed can be controlled according to the current, and therefore the anti-time-lag characteristic of the fuse can be achieved.
In the invention, in the using process of an electric appliance, when the continuous current of a circuit is overlarge, the magnetism of the first electromagnet 10 is enhanced, so that the magnetic sliding plate 11 is attracted to move towards the first electromagnet 10, and the silicon oil is filled between the magnetic sliding plate 11 and the power connection plate 2, so that the magnetic sliding plate 11 is blocked in the moving process, and the water through groove 23 is arranged, so that the silicon oil on the left side of the magnetic sliding plate 11 can flow into the right side of the magnetic sliding plate 11 along the water through groove 23, so that the air in the air storage cavity 14 can enter the space on the right side of the magnetic sliding plate 11 along the air outlet groove 15, and the magnetic sliding plate 11 can move smoothly;
when the magnetic sliding plate 11 moves to the bump 7, the bump 7 is pushed to move upwards, so that the second power connection block 6 moves towards the same time, when the second power connection block 6 completely enters the sliding cavity 5, the limit of the power connection plate 2 is released, so that the magnetic sliding plate 11 and the power connection plate 2 move towards the first electromagnet 10 together, and when the power connection plate 2 is separated from the second power connection block 6, the circuit is in a disconnected state, so that the magnetic sliding plate 11 and the power connection plate 2 move to the left by a distance under the inertia effect, so that the separation of the power connection plate 2 and the second power connection block 6 can be realized, the disconnection of the fuse can be realized, and the use of the circuit can be effectively guaranteed;
when the electric plate 2 and the magnetic sliding plate 11 move to the maximum position, the reset spring 3 in a compressed state can push the electric plate 2 and the magnetic sliding plate 11 to realize reset, and when the right side of the electric plate 2 is blocked by the second electric connecting block 6, the connecting spring 12 in a crushed state can push the magnetic sliding plate 11 to move, and when the magnetic sliding plate 11 passes through the position of the lug 7, the jacking of the lug 7 is realized again, so that the second electric connecting block 6 moves upwards, the reset of the electric plate 2 can be realized, the contact between the left side of the electric plate 2 and the second electric connecting block 6 can be realized, the circuit communication can be realized, the automatic recovery of the fuse can be realized, manual replacement is not needed, and the replacement time can be reduced;
in the process of returning the electric board 2, the magnetic sliding board 11 moves to the right side under the action of the connecting spring 12, so that the magnetic sliding board 11 can extrude the space on the right side of the magnetic sliding board 11, the air in the air storage cavity 14 can enter along the air inlet groove 16, the magnetic sliding board 11 and the electric board 2 can be reset, the opening of the air inlet groove 16 is small, the recovery process is slow, the detection and the replacement of an operator can be facilitated during the power failure, the circuit is in a normal state when being communicated again, and the situation of overcurrent and power failure again can be prevented;
when a short circuit occurs in the circuit, the current in the circuit can be huge, so that the current variant 24 pushes the sliding plate 21 to move the farthest distance, the opening of the water trough 23 is the largest, the circuit can be quickly broken, the electric appliance can be protected, and because the current is huge, the second electromagnet 18 can attract the stop block 19 made of a metal material to move, the air inlet trough 16 can be sealed, the gas in the space on the right side of the magnetic sliding plate 11 cannot enter the air storage cavity 14, the electric plate 2 and the magnetic sliding plate 11 cannot return to the original position, the circuit is permanently broken, after the circuit is repaired, the stop block 19 returns to the original position by pulling a rope, the return communication of the fuse can be realized, and the recycling of the fuse can be realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (2)
1. A self-recovery circuit protection fuse, comprising a protection box (1), the inner wall of the protection box (1) is hermetically and slidably connected with an electric connection plate (2), the electric board (2) is connected with the inner wall of the protection box (1) through a plurality of reset springs (3), the side wall of the electric connection plate (2) is provided with a first electric connection block (4), a sliding cavity (5) is arranged at the top in the protection box (1), the inner walls of two ends of the sliding cavity (5) are respectively connected with a second electricity connecting block (6) and a convex block (7) in a sliding way, the second electricity connecting block (6) is abutted against the electricity connecting plate (2), the second electricity connecting block (6) is connected with the lug (7) through a connecting plate (8), a plurality of guide posts (9) are welded on the inner wall of the sliding cavity (5), the guide posts (9) are all connected with a connecting plate (8) in a penetrating and sliding manner, a first electromagnet (10) is arranged on the inner wall of the protection box (1), the inner wall of the protection box (1) is hermetically and slidably connected with a magnetic sliding plate (11), the magnetic sliding plate (11) is connected with the electric connection plate (2) through a connection spring (12), an adjusting device is arranged inside the magnetic sliding plate (11), a gas storage cavity (14) is formed in the inner top of the protection box (1), and a delay device is arranged inside the gas storage cavity (14);
the delay device comprises an air outlet groove (15) and an air inlet groove (16) which are arranged at the bottom in the air storage cavity (14), and one-way valves are arranged in the air outlet groove (15) and the air inlet groove (16);
the adjusting device comprises a through groove (13) penetrating through the side wall of the magnetic sliding plate (11), a blocking groove (20) is formed in the inner wall of the through groove (13), and a sliding plate (21) is connected to the inner wall of the blocking groove (20) in a sealing and sliding mode;
the side wall of the sliding plate (21) is connected with the inner wall of the blocking groove (20) through a compression spring (22), and a water passing groove (23) is formed in the side wall of the blocking groove (20) in a penetrating mode;
an electrorheological fluid (24) is arranged in the blocking groove (20), and the electric connection plate (2) is made of aluminum materials.
2. A self-recovery circuit protection fuse as claimed in claim 1, wherein a sliding groove (17) is formed in a side wall of the air inlet groove (16), a second electromagnet (18) is arranged on an inner wall of the sliding groove (17), and a stopper (19) made of metal material is connected to the inner wall of the sliding groove (17) in a sealing and sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110229030.XA CN113066688B (en) | 2021-03-02 | 2021-03-02 | Fuse is used in self-resuming type circuit protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110229030.XA CN113066688B (en) | 2021-03-02 | 2021-03-02 | Fuse is used in self-resuming type circuit protection |
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| Publication Number | Publication Date |
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| CN113066688A CN113066688A (en) | 2021-07-02 |
| CN113066688B true CN113066688B (en) | 2022-11-22 |
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| CN202110229030.XA Active CN113066688B (en) | 2021-03-02 | 2021-03-02 | Fuse is used in self-resuming type circuit protection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113708338B (en) * | 2021-10-28 | 2022-02-22 | 国动科技有限公司 | Line protector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110517936A (en) * | 2019-09-06 | 2019-11-29 | 河南普润仪器设备有限公司 | A kind of quick response formula AC fuse |
| CN111816525A (en) * | 2020-07-23 | 2020-10-23 | 于亚美 | Intelligent self-recovery fuse |
| CN111986963A (en) * | 2020-09-04 | 2020-11-24 | 浙江圣纳智能科技有限公司 | Short-circuit protection fuse |
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2021
- 2021-03-02 CN CN202110229030.XA patent/CN113066688B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110517936A (en) * | 2019-09-06 | 2019-11-29 | 河南普润仪器设备有限公司 | A kind of quick response formula AC fuse |
| CN111816525A (en) * | 2020-07-23 | 2020-10-23 | 于亚美 | Intelligent self-recovery fuse |
| CN111986963A (en) * | 2020-09-04 | 2020-11-24 | 浙江圣纳智能科技有限公司 | Short-circuit protection fuse |
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| CN113066688A (en) | 2021-07-02 |
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Effective date of registration: 20221104 Address after: 311800 No. 96, Genta West Road, Taozhu street, Zhuji City, Shaoxing City, Zhejiang Province Applicant after: ZHUJI DONGBAI ELECTRIC POWER INSTALLATION ENGINEERING Co.,Ltd. Applicant after: State Grid Zhejiang Electric Power Co., Ltd. Zhuji power supply Co. Address before: No.45, huangtang village, Chenjia village committee, Daibu Town, Liyang City, Changzhou City, Jiangsu Province, 213331 Applicant before: Cheng Zhi |
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