CN218414469U - High-speed breaker containing root breaking type copper bar - Google Patents
High-speed breaker containing root breaking type copper bar Download PDFInfo
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- CN218414469U CN218414469U CN202221860310.7U CN202221860310U CN218414469U CN 218414469 U CN218414469 U CN 218414469U CN 202221860310 U CN202221860310 U CN 202221860310U CN 218414469 U CN218414469 U CN 218414469U
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- copper bar
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- arc
- root
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 133
- 239000010949 copper Substances 0.000 title claims abstract description 133
- 238000005520 cutting process Methods 0.000 claims abstract description 64
- 238000010891 electric arc Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000001960 triggered effect Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 description 6
- 239000002360 explosive Substances 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model adopts the technical proposal that: a high-speed breaker containing root breaking type copper bars comprises: the device comprises a gas generating device, a breaking grid piece, a breaking copper bar, an arc channel and an arc extinguish chamber; the breaking copper bar comprises a cutting part, a first copper bar and a second copper bar; the cutting part is arranged between the first copper bar and the second copper bar; the cutting-off piece enables the first cut-off copper bar to be communicated with the second cut-off copper bar; the gas generating device is used for receiving an external trigger signal, generating energy after being triggered and pushing the breaking grid plate to move towards the arc channel; the blade of the breaking grid piece pushes the cutting part to break the connection part between the cutting part and the first copper bar and the second copper bar, and the cutting part enters the arc extinguish chamber through the arc channel; the electric arc generated by cutting off the cut-off copper bar by the cut-off grid sheet is extruded to enter the arc extinguish chamber through the electric arc channel; arc extinguishing materials are placed in the arc extinguishing chamber. The utility model discloses a cracked part and the copper bar of guarantee copper bar separate completely, improve the whole security of breaking ware.
Description
Technical Field
The utility model belongs to the technical field of circuit protection device, concretely relates to contain high-speed ware of breaking of root formula copper bar.
Background
The fuse is an electric appliance which uses a metal conductor as a melt to be connected in series in a circuit, and is fused due to self heating when overload or short-circuit current passes through the melt, so that the circuit is broken. The fuse has the advantages of simple structure, convenient use, safety protection in a power distribution system, wide application in power grid protection and electric equipment protection, automatic circuit cutting when short circuit fault or overload occurs to the power grid or the electric equipment, avoidance of electric equipment damage and prevention of accident spreading.
Various novel fuses begin to appear at present, and the most widely applied fuse is an initiating explosive device breaker.
The working principle is as follows:
when the current is normally passed, the current can flow through the through-current copper bar. When short circuit occurs, the initiating explosive device receives an ignition signal and is ignited, the high temperature and high pressure generated when the initiating explosive device is ignited push the insulating grid plate to move, and break the through-flow copper bar, so that the through-flow copper bar is divided into two parts and insulated and isolated. In the breaking process, the generated electric arc can enter the arc extinguish chamber containing the energy absorption substance, so as to absorb energy and cool, and finally break.
The copper bar is broken by the insulating grid sheet, which is the most critical link in the breaking process. The material of general grid is insulating material such as plastics or pottery, and intensity is relatively poor in comparing in the copper bar, consequently need make the grid break the copper bar smoothly through special design.
In the prior art, the copper bar is cut off from the middle by the grid plate, the weak part of the copper bar is bent towards two sides after the copper bar is cut off, and the grid plate can smoothly run downwards due to the open position. There are several problems with the current solutions: after the copper bar is bent, in order to keep away the position of the grid plate in operation, avoiding grooves are required to be arranged on two sides, so that the bent part of the copper bar enters the avoiding grooves. When the product mold is designed, the shell positioned below the cut-off copper bar is divided into two parts, and avoidance grooves are arranged on two sides below the copper bar. After the copper bar is bent, the bent part of the copper bar has the risk of falling off, and the bent part of the copper bar is possibly brought into an arc channel below by a grid piece moving at a high speed after falling off and is clamped between the grid piece and the arc channel to block the movement of the grid piece, so that breaking failure is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of above-mentioned background art existence, provide a contain the high-speed ware of breaking of root formula copper bar, guarantee the fracture part and the copper bar complete separation of copper bar, improve the whole security of breaking the ware.
The utility model adopts the technical proposal that: a high-speed breaker containing root breaking type copper bars comprises: the device comprises a gas generating device, a breaking grid piece, a breaking copper bar, an arc channel and an arc extinguish chamber; the cut-off copper bar comprises a cut-off part, a first copper bar and a second copper bar; the cutting part is arranged between the first copper bar and the second copper bar; the cutting-off piece enables the first cut-off copper bar to be communicated with the second cut-off copper bar;
the gas generating device is used for receiving an external trigger signal, generating energy after being triggered and pushing the breaking grid plate to move towards the arc channel; the blade of the breaking grid piece pushes the cutting part to break the connection part between the cutting part and the first copper bar and the second copper bar, and the cutting part enters the arc extinguish chamber through the arc channel; the electric arc generated by the breaking grid plate for cutting off the breaking copper bar is extruded by the breaking grid plate and enters the arc extinguish chamber through the electric arc channel; arc extinguishing materials are placed in the arc extinguishing chamber.
In the above technical scheme, the device further comprises an insulating shell; the gas generating device, the breaking grid piece, the breaking copper bar, the arc channel and the arc extinguish chamber are sequentially arranged inside the insulating shell from top to bottom.
In the technical scheme, the end face of the cutting part, which is opposite to the cut-off grid sheet, is matched with the end parts of the first copper bar and the second copper bar to form a cutting groove; the blade end part of the breaking grid sheet is matched with the cutting groove.
In the technical scheme, the bottom surface of the joint of the cut-off piece and the first copper bar and the second copper bar is provided with a stress concentration groove with a downward opening; the stress concentration groove and the two roots of the cutting groove are arranged oppositely.
In the technical scheme, the blade end part of the grid breaking sheet is a plane; and after the connection part between the cutting-off part and the first copper bar and the connection part between the cutting-off part and the second copper bar are disconnected, the end part of the blade clinging to the breaking grid piece enters an electric arc channel and an arc extinguish chamber.
In the technical scheme, the blade end part of the breaking grid sheet is the same as the width of the cutting groove.
In the above technical scheme, the root of the cutting groove is in a right angle.
In the above technical scheme, the stress concentration groove is a V-shaped groove opening to the arc channel; the central line of the stress concentration groove is on the same plane with the end face of the root of the corresponding cutting groove.
In the above technical scheme, the depth of the stress concentration groove is greater than 1mm.
The utility model has the advantages that: when the gas generating device receives an external trigger signal, the gas generating device pushes the cut-off grid plate to move downwards; the tip of the break grid plate can cut off the break copper bar. The cut-off part is completely disconnected from the first copper bar and the second copper bar under the action of the cut-off grid piece and is further pushed into the arc channel by the cut-off grid piece, so that the cut-off part finally enters the arc extinguish chamber, unnecessary electric arcs generated in the execution process of protection actions are avoided, and the safety of the whole device is enhanced; meanwhile, the whole section of the cut-off part falls off, so that an avoiding groove is not required to be arranged, and the manufacturing process of the insulating shell is simplified. The blade end part of the breaking grid piece is of a plane structure and is in plane contact with the surface of the breaking groove, so that the cutting piece can be pushed to stably run downwards after being cut off, and the breaking grid piece is prevented from being clamped. The utility model discloses a set up stress concentration groove and can make the cutting member produce the biggest stress concentration effect at the both sides root for the required power of disconnected bars piece when cutting off disconnected copper bar is littleer, cuts off disconnected copper bar more easily, guarantees to divide disconnected success, can not hinder disconnected bars piece down. The root of cutting off the groove is the fillet, avoids it at the cutting off-process, and too much uncontrollable drawing, adhesion take place for the port position. The electric arc generated by the break grid blade after the copper bar is cut off can enter the electric arc channel along with the cut-off piece to be elongated, and an electric arc voltage higher than the system voltage is formed, so that the current on the break copper bar is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial exploded view of the present invention;
FIG. 3 is a schematic diagram of a cut-off gate;
fig. 4 is an enlarged schematic view of the point a of the present invention.
The method comprises the following steps of 1-insulating shell, 2-first copper bar, 3-arc channel, 4-arc extinguish chamber, 5-cut-off part, 6-second copper bar, 7-breaking grid piece, 8-gas generating device, 9-mounting groove, 10-limiting plate, 11-blade, 12-cut-off groove and 13-stress concentration groove.
Detailed Description
The invention will be further described in detail with reference to the drawings and the following detailed description, which are provided for the purpose of clearly understanding the invention and are not intended to limit the invention.
As shown in fig. 1, the utility model relates to a contain high-speed ware of breaking of root formula copper bar, include: the device comprises an insulating shell 1, a gas generating device 8, a breaking grid piece 7, a breaking copper bar, an arc channel 3 and an arc extinguish chamber 4; the gas generating device 8, the breaking grid sheet 7, the breaking copper bar, the arc channel 3 and the arc extinguish chamber 4 are sequentially arranged in the insulating shell 1 from top to bottom.
The breaking copper bar comprises a cutting piece 5, a first copper bar 2 and a second copper bar 6; the cutting piece 5 is arranged between the first copper bar 2 and the second copper bar 6; the cutting-off part 5 enables the first cut-off copper bar to be communicated with the second cut-off copper bar; when the high-speed dc breaker does not perform the circuit protection action, the end of the blade 11 of the breaking grid 7 and the arc path 3 are located on both sides of the cut-off member 5, respectively.
When the high-speed direct current breaker executes a circuit protection action, the gas generating device 8 receives an external trigger signal, generates energy after being triggered, and pushes the breaking grid piece 7 to move towards the arc channel 3; the blade 11 of the breaking grid piece 7 pushes the cutting part 5 to break the connection part between the cutting part and the first copper bar 2 and the second copper bar 6, and the cutting part enters the arc extinguish chamber 4 through the arc channel 3; the electric arc generated by cutting off the cut-off copper bar by the cut-off grid sheet 7 is extruded to enter the arc extinguish chamber 4 through the electric arc channel 3; arc extinguishing materials are placed in the arc extinguishing chamber 4. The energy source of the gas generating device can be initiating explosive devices.
After the blade 11 of the breaking grid sheet 7 cuts off the connection part between the cutting part 5 and the first copper bar 2 and the second copper bar 6, electric arcs are generated at two ends of the cutting part 5, the electric arcs enter the electric arc channel 3 along with the cutting part 5 to be elongated, an electric arc voltage higher than a system voltage is formed, and then the current on the breaking copper bar is reduced. When the electric arc contacts with the arc extinguishing material, arc extinguishing is realized. The inner wall of the arc channel extends vertically and is attached to the blade 11 entering the grid-breaking piece 7, and only a small gap exists between the inner wall and the blade, so that the arc is elongated when passing through.
Because the cutting-off member 5 can be formed into a relatively high speed under the pushing of the grid, and can seriously impact an object below after entering the arc-extinguishing chamber 4, the arc-extinguishing material or the shell arranged in the arc-extinguishing chamber 4 generally uses a hard substance or a substance with a buffering function, such as a steel wire mesh.
The top of the break-off grid 7 is provided with an installation groove 9 which is mutually matched with the gas generating device 8. When the high-speed direct current breaker does not perform the circuit protection action, the gas generating device 8 is positioned in the mounting groove 9 and is tightly attached to the mounting groove. A gap is formed between the energy output end of the gas generating device 8 and the bottom surface of the mounting groove 9. When the high-speed direct current breaker executes a circuit protection action, the energy instantaneously output by the gas generating device 8 is amplified due to the gap action, and the downward movement of the breaking grid piece 7 is deduced.
The end face of the cutting part 5 opposite to the breaking grid piece 7 is matched with the end parts of the first copper bar 2 and the second copper bar 6 to form a cutting groove 12; the end of the blade 11 of the breaking grid sheet 7 is matched with the cutting groove 12. When the high-speed dc breaker does not perform the circuit protection operation, the end of the blade 11 of the breaking gate 7 is positioned in the cutting groove 12 and contacts the bottom surface thereof. After the gas generating device 8 is triggered, the generated energy can push the breaking grid sheet 7 to move downwards, and the end part of the blade 11 of the breaking grid sheet 7 cuts off the connection between the cutting part 5 and the first copper bar 2 and the second copper bar 6.
As shown in fig. 2, the first copper bar 2 and the second copper bar 6 are symmetrically arranged relatively, the cutting member 5 is located between the ends of the first copper bar 2 and the second copper bar 6, and the widths of the ends of the first copper bar 2 and the second copper bar 6 are obviously smaller than the width of the body of the first copper bar, so that the cutting member 5 can be conveniently cut off under the action of the grid-breaking sheet 7.
As shown in fig. 3, the breaking grid 7 comprises a body and a blade 11; the blade 11 extends from the body of the break grid 7 to the break copper bar. The edges of the two sides of the blade 11 symmetrically extend along the circumferential direction of the body by taking the edges as a center line to form limit plates 10; the outer surface of the limiting plate 10 and the outer surface of the body are on the same curved surface. The width of the limiting plate 10 and the end parts of the first copper bar 2 and the second copper bar 6 are respectively in clearance fit with the body of the limiting plate. When the blade 11 moves downwards to enter the arc channel 3, the limiting plate 10 enters the lower part of the cut-off copper bar through the gap, and the limiting plate is matched with the gap to realize the limiting in the movement process of the cut-off grid piece 7.
The end part of the blade 11 of the breaking grid sheet 7 is a plane; after the connection part between the cutting-off part 5 and the first copper bar 2 and the second copper bar 6 is disconnected, the end part of the blade 11 clinging to the breaking grid piece 7 enters the arc channel 3 and the arc extinguish chamber 4. The end part of the blade 11 of the grid sheet 7 is of a plane structure and is effectively contacted with the bottom surface of the cutting groove 12, so that the falling part of the cut-off piece 5 can be pushed to stably run downwards without turning or rotating and the like after being broken, and the grid sheet is prevented from being stuck.
As shown in fig. 4, the thickness of the position of the broken copper bar corresponding to the two side edges of the broken grid piece 7 is smaller than that of the other part of the cutting piece 5, and the width of the cutting groove 12 is the same as that of the blade 11 of the broken grid piece 7. One end of the cutting part 5, which is opposite to the arc channel 3, is matched with the end parts of the first copper bar 2 and the second copper bar 6 to form two stress concentration grooves 13; the stress concentration groove 13 is disposed opposite to the two roots of the cut-off groove 12. The stress concentration groove 13 can enable the weak part of the cut-off copper bar, namely the root parts of the two sides of the cut-off part 5 to generate the maximum stress concentration effect, so that the force required by the grid plate when the cut-off copper bar is cut off is smaller, and the copper bar is more easily cut off. When the grid plate moves downwards, the cutting part 5 can be broken and fall off along the stress concentration groove 13 from the root part in a whole block and enter the arc extinguishing chamber 4 below the arc channel 3 under the pushing of the breaking grid plate 7.
The stress concentration groove 13 may be triangular, and the stress concentration groove 13 is a V-shaped groove that opens to the arc channel 3; the center line of the stress concentration groove 13 is on the same plane as the root end face of the corresponding cutting groove 12. The sharp angle of the stress concentration groove 13 corresponds to the root of the cutting groove 12, and the angle is generally an acute angle. Stress concentration groove 13 size need guarantee still that the copper bar has certain thickness after the fluting, for example is greater than 1mm, guarantees that it still has certain intensity, avoids unexpected fracture damage.
The root of the cutting groove 12 is at a right angle. Because the junction of cutting off part 5 and first copper bar 2 and second copper bar 6 can form a natural corner, and the angle of corner generally sets up to the right angle, and generally can not have the fillet or only have minimum in the course of working, inevitable fillet in the processing. Avoid it in the cutting process, the port position of cutting off 5 takes place too much uncontrollable tensile, the adhesion.
Those not described in detail in this specification are within the skill of the art.
Claims (9)
1. The utility model provides a contain high-speed ware that opens of root disconnected formula copper bar which characterized in that includes: the device comprises a gas generating device, a breaking grid piece, a breaking copper bar, an arc channel and an arc extinguish chamber; the breaking copper bar comprises a cutting part, a first copper bar and a second copper bar; the cutting part is arranged between the first copper bar and the second copper bar; the cutting-off piece enables the first cut-off copper bar to be communicated with the second cut-off copper bar;
the gas generating device is used for receiving an external trigger signal, generating energy after being triggered and pushing the breaking grid plate to move towards the arc channel; the blade of the breaking grid piece pushes the cutting part to break the connection part between the cutting part and the first copper bar and the second copper bar, and the cutting part enters the arc extinguish chamber through the arc channel; the electric arc generated by the breaking grid plate for cutting off the breaking copper bar is extruded by the breaking grid plate and enters the arc extinguish chamber through the electric arc channel; arc extinguishing materials are placed in the arc extinguishing chamber.
2. The high-speed breaker comprising the root breaking type copper bar according to claim 1, wherein: the insulating shell is also included; the gas generating device, the breaking grid piece, the breaking copper bar, the arc channel and the arc extinguish chamber are sequentially arranged inside the insulating shell from top to bottom.
3. The high-speed breaker comprising the root breaking type copper bar according to claim 2, wherein: the end face of the cutting part opposite to the breaking grid piece is matched with the end parts of the first copper bar and the second copper bar to form a cutting groove; the blade end of the breaking grid sheet is matched with the cutting groove.
4. The high-speed breaker comprising root breaking type copper bars as claimed in claim 3, characterized in that: the bottom surface of the joint of the cut-off piece and the first copper bar and the second copper bar is provided with a stress concentration groove with a downward opening; the stress concentration groove and the two roots of the cutting groove are arranged oppositely.
5. The high-speed breaker comprising root breaking type copper bars as claimed in claim 4, characterized in that: the blade end part of the breaking grid piece is a plane; and after the connection part between the cutting-off part and the first copper bar and the connection part between the cutting-off part and the second copper bar are disconnected, the end part of the blade clinging to the breaking grid piece enters an electric arc channel and an arc extinguish chamber.
6. The high-speed breaker comprising the root breaking type copper bar according to claim 3, wherein: the blade end of the breaking grid sheet is the same as the width of the cutting groove.
7. The high-speed breaker comprising the root breaking type copper bar as claimed in claim 6, wherein: the root of the cutting groove is in a right angle.
8. The high-speed breaker comprising the root breaking type copper bar according to claim 4, wherein: the stress concentration groove is a V-shaped groove; the central line of the stress concentration groove is on the same plane with the end face of the root of the corresponding cutting groove.
9. The high-speed breaker comprising root breaking type copper bars as claimed in claim 8, characterized in that: the depth of the stress concentration groove is more than 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221860310.7U CN218414469U (en) | 2022-07-19 | 2022-07-19 | High-speed breaker containing root breaking type copper bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221860310.7U CN218414469U (en) | 2022-07-19 | 2022-07-19 | High-speed breaker containing root breaking type copper bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218414469U true CN218414469U (en) | 2023-01-31 |
Family
ID=85011377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221860310.7U Active CN218414469U (en) | 2022-07-19 | 2022-07-19 | High-speed breaker containing root breaking type copper bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218414469U (en) |
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2022
- 2022-07-19 CN CN202221860310.7U patent/CN218414469U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240412 Address after: Room 101-1, 1st Floor, Building 4, San Xin Material Incubator, No. 17 Gutian Fifth Road, Qiaokou District, Wuhan City, Hubei Province, 430034 Patentee after: Wuhan Rongyi Electrical Technology Co.,Ltd. Country or region after: China Address before: 101A, Floor 1, Building 4, National Three New Materials Incubator, 17 Gutian Fifth Road, Qiaokou District, Wuhan, Hubei Province, 430000 Patentee before: Zhuang Yichen Country or region before: China |
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| TR01 | Transfer of patent right |