CN116364501A - Blasting type circuit breaker with arc extinguishing grid - Google Patents
Blasting type circuit breaker with arc extinguishing grid Download PDFInfo
- Publication number
- CN116364501A CN116364501A CN202310322216.9A CN202310322216A CN116364501A CN 116364501 A CN116364501 A CN 116364501A CN 202310322216 A CN202310322216 A CN 202310322216A CN 116364501 A CN116364501 A CN 116364501A
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- arc extinguishing
- metal
- arc
- shell
- blasting
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- 238000005422 blasting Methods 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 claims abstract description 83
- 238000004880 explosion Methods 0.000 claims abstract description 40
- 229920000742 Cotton Polymers 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005474 detonation Methods 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a blasting circuit breaker with an arc extinguishing gate, which comprises an on-off metal arranged on a shell and a base arranged on the on-off metal; the shell is in threaded connection with the base, the on-off metal is arranged between the shell and the base, and a blasting assembly is arranged between the on-off metal and the base; according to the invention, the V-shaped arc-extinguishing grid is formed, so that enough space is reserved between the air guide cambered surface and the arc-extinguishing grid for exchanging air, and the air conduction is further quickened; the explosion cavity is arranged on one side of the on-off metal and is in an elliptical shape, and a horn mouth shape is formed, so that the elliptical mouth is tightly close to the edge of the on-off metal, and then the break-off groove can be rapidly cut off without larger impact force when explosion occurs.
Description
Technical Field
The invention relates to a circuit breaker technology, in particular to a blasting circuit breaker with an arc extinguishing gate.
Background
The circuit breaker is a switching device capable of closing, carrying and opening a current under normal loop conditions and capable of closing, carrying and opening a current under abnormal loop conditions in a prescribed time; circuit breakers can be used in a variety of circuits that can selectively interrupt current flow to or from an energy storage device; for example: the battery pack of the electric automobile can be protected by a circuit breaker.
At present, a fuse type breaker is commonly applied in the field of electric automobiles in domestic markets, and is fused through a control system, so that the purpose of power-off protection is achieved; it has the following disadvantages: 1. the fusing speed is low, and the response is not timely enough; 2. as OEMs are manufacturing vehicle models with greater power, greater range and fast charging, then a higher voltage platform (800-1000 VDC) is required, the volume required for a fuse breaker will be greater, and more space will be occupied; 3. since the high voltage circuit of a vehicle has a single-shot pulse overload current, for example at the moment of circuit on/off, which is generally of short duration, as the vehicle is used frequently, the pulse current will in many cases occur thousands of times during the whole use of the device, resulting in premature fatigue failure of the fuse, which may be interrupted at some times even under normal operating conditions; 4. when an electric automobile collides accidentally, high-voltage parts of the metal shell are easy to squeeze and deform, and after the deformed metal shell of the electric device contacts with the high-voltage copper bar, dangerous situations such as short circuit fire or personnel electric shock can be caused; 5. when the on-off metal is disconnected under the high-voltage environment, an arc can be generated at the moment of disconnection, and at the moment, the arc cannot timely contact with the arc extinguishing grid, so that the on-off metal cannot timely disconnect an electrified power supply, in addition, the explosion cavity is not matched with the size of the on-off metal, the on-off metal cannot timely disconnect, and sharp angles or burrs appear between the on-off metal disconnection.
Currently, in order to solve the above problems, two schemes are generally adopted: 1. after the automobile collides, the collision sensor sends a collision signal to an electric control unit responsible for controlling the high-voltage contactor, the electric control unit sends a power-off signal to the high-voltage power distribution system after receiving a collision instruction, and the contactor is disconnected to cut off a high-voltage loop; but before the electronic control unit reacts, a hazard has occurred; in addition, in the collision process of the vehicle, the intelligent judgment system cannot complete the whole logic judgment and power-off action because the signal line or the power supply line is damaged; 2. adding a fuse in the vehicle power supply circuit, the high voltage circuit fuse being expected to be able to open when a short circuit occurs after a collision; the risk of this kind of scheme is when taking place the condition of incomplete short circuit, the collision leads to connecting on an equivalent heating impedance between high-pressure positive negative pole, and in the electric current range that the fuse allowed, local heating will cause the emergence of whole car conflagration.
Disclosure of Invention
In view of the above, it is desirable to provide a blast circuit breaker with arc extinguishing bars
The technical scheme of the invention is as follows:
a blasting circuit breaker with arc extinguishing grid comprises a shell, on-off metal arranged on the shell, and a base arranged on the on-off metal; the shell is in threaded connection with the base, the on-off metal is arranged between the shell and the base, and a blasting assembly is arranged between the on-off metal and the base;
the shell and the on-off metal jointly form an arc extinguishing cavity, one side of the on-off metal, which is positioned in the arc extinguishing cavity, is provided with a breaking groove and two swinging grooves, one breaking groove is positioned in the middle of the two swinging grooves, the distance from the breaking groove to the swinging grooves is a swinging section, the breaking groove corresponds to the position of the blasting assembly, a middle seat is arranged in the arc extinguishing cavity, the middle seat is also provided with an arc extinguishing part and two exhaust parts, and the arc extinguishing part is arranged between the two exhaust parts; the arc extinguishing part is provided with a plurality of arc extinguishing grids, and clamping grooves are formed among the arc extinguishing grids; the clamping groove is formed in the arc extinguishing part; the arc extinguishing grids are arranged in parallel and are provided with intervals with a certain distance, and the arc extinguishing grids are positioned between the shell and the on-off metal; the arc-extinguishing gate is arranged according to the swinging radian of the swinging section, and a gap is formed between the arc-extinguishing gate and the swinging section; and a plurality of arc extinguishing grids are parallel to the breaking grooves.
In a further embodiment, the blasting assembly comprises a blasting cavity and an igniter arranged in the blasting cavity, wherein an elliptical opening is formed in one side of the blasting cavity, which is positioned on the on-off metal, a circular opening is formed in the other side of the blasting cavity, and the blasting cavity is in a horn mouth shape; the igniter comprises a blasting end, so that the edge of the on-off metal is covered, and the blasting distance is shortened; and the ignition end is arranged at one side of the explosion end, the position of the explosion cavity corresponds to the position of the breaking groove, the elliptical opening is in conflict with the on-off metal, an interval is arranged between the explosion end and the on-off metal, the explosion end is internally provided with detonating fuel, and the ignition end is electrically connected with the circuit control system through a wire.
In a further embodiment, a plurality of arc extinguishing bars are located on one side of the on-off metal and are arranged in a V shape, an opening of the V shape is located on one side of the shell, and then when the on-off metal is disconnected, the arc extinguishing bars are contacted at the first time, so that an arc discharge phenomenon is avoided.
In a further embodiment, the arc extinguishing gate is provided with a U-shaped notch at one side of the on-off metal, so that the arc is cut, and the arc is extinguished in a segmented mode.
In a further embodiment, an air guide cambered surface is arranged on one side of the shell, which is positioned on the arc extinguishing gate; the air guide arc surface is two semicircular arcs, and the two semicircular arcs are tangent; the tangent position of the two semicircular arcs corresponds to the position of the breaking groove, so that gas is guided to conduct to two sides.
In a further embodiment, the exhaust part is provided with pressure relief channels on two sides of the arc extinguishing grating, and the pressure relief channels are separated by a separation plate; a splitter plate is arranged between the splitter plates; the splitter plate is arranged in parallel with the splitter plate; the pressure relief channel is communicated with the arc extinguishing grid, and the shell is positioned at the position of the pressure relief channel and provided with a plurality of pressure relief holes so as to guide the discharge of gas.
In a further embodiment, filter cotton is arranged between the shell and the pressure relief channel, and the pressure relief hole is covered on the filter cotton, so that flying scraps generated by blasting are blocked, and splashing out of the shell is avoided.
In a further embodiment, two groups of protection components are arranged on two sides of the arc extinguishing part, which are positioned on the arc extinguishing gate, and each protection component comprises a group of limiting blocks and a baffle plate; the limiting blocks are positioned on two sides of the arc extinguishing grid; and is arranged on the side wall of the arc extinguishing part; the space between the limiting blocks is 1-2mm smaller than the width of the corresponding part of the swinging section; a group of limiting blocks clamp the swinging section which swings after explosion; the two baffle plates are parallel to each other and are perpendicular to the on-off metal; the baffle plate and the limiting block are adjacently arranged on the side wall of the arc extinguishing part; the baffle plate prevents the swing section which swings after blasting from colliding with the middle seat; the two groups of protection components are respectively used for protecting two swinging sections of on-off metal after blasting.
In a further embodiment, a gap is reserved between the baffle plate and the arc extinguishing gate; a positioning block is arranged at the matching position of the middle seat and the on-off metal; the positioning block is arranged on the middle seat, so that on-off metal is fixed, and the position of a broken slot far explosion cavity is avoided when the on-off metal is connected.
The beneficial effects are that: the invention designs a blasting breaker with an arc extinguishing gate, which is characterized in that on-off metal is blasted from the position of a breaking groove when in fault, so that the purpose of cutting off current is achieved, then under the impact of explosion, two swinging sections can rotate upwards around the position of the swinging groove and enter an arc extinguishing cavity, and generated electric arcs are stretched by the swinging sections and cut into sections through the arc extinguishing gate, so that the purpose of arc extinguishing is achieved, and the electric arcs are prevented from leaking outwards;
when the danger occurs, the explosion end is exploded, the explosion impacts the breaking groove, the on-off metal is rapidly broken from the breaking groove, meanwhile, high-pressure gas generated by the explosion enters the arc extinguishing cavity, and an arc generated at the breaking position of the on-off metal is blown to the arc extinguishing grid to realize arc extinguishing;
the V-shaped arc extinguishing gate is formed by arranging a plurality of arc extinguishing gates, and after explosion occurs, the on-off metal is contacted with the arc extinguishing gates for the first time when broken; the arcing phenomenon is avoided, so that arc extinction cannot be performed in time when the on-off metal is disconnected, and the on-off metal is still in an arc connection state when the on-off metal is disconnected; therefore, the arc-extinguishing gate carries out synchronous arc extinction on the electric arc, and the arc-extinguishing efficiency and the arc-extinguishing effect are improved; in addition, the V-shaped arc-extinguishing gate is formed, so that enough space is reserved between the air guide cambered surface and the arc-extinguishing gate for exchanging air, and the air conduction is further quickened;
after passing through the arc extinguishing grid, the high-pressure gas generated by explosion contacts with the air guide arc surfaces, and the air guide arc surfaces guide the high-pressure gas to two opposite directions respectively, so that the impact of the high-pressure gas on the top surface of the shell is reduced, and the effects of pressure relief and protection are achieved; the high-pressure gas is respectively guided into the pressure relief channels by the air guide cambered surfaces, so that the high-pressure gas can be split, and the gas in the pressure relief channels is cut into finer air flow by the splitter plate, so that the pressure relief effect is further improved; therefore, the pressure relief effect is achieved, and after the high-pressure gas enters the pressure relief channel, the high-pressure gas can be finally discharged out of the shell through the pressure relief hole; the filter cotton prevents fine particles generated by explosion from releasing the pressure Kong Feichu shell;
the swinging sections can be blocked by the limiting blocks when the on-off metal is cut off, so that the danger caused by accidental contact after the two swinging sections swing backwards is avoided; in addition, the baffle plate can prevent the swing section from being impacted with the middle seat due to overlarge rotation amplitude, so that the middle seat is protected; in addition, the explosion cavity is arranged on one side of the on-off metal and is in an elliptical shape, and a horn mouth shape is formed, so that the elliptical mouth is tightly close to the edge of the on-off metal, and then the break-off groove can be rapidly cut off without larger impact force when explosion occurs.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker according to the present invention in a semi-sectional structure.
Fig. 2 is a perspective view of the arc chute of the present invention.
Fig. 3 is a perspective view of the circuit breaker of the present invention.
Fig. 4 is a schematic view of the blasting chamber structure of the present invention.
Fig. 5 is a schematic diagram of a card slot structure of the present invention.
Fig. 6 is a schematic view of the V-shaped combination of arc extinguishing bars of the present invention.
Fig. 7 is a side view of an arc chute of the present invention.
Fig. 8 is a schematic view of the positioning block structure of the present invention.
Fig. 9 is a schematic diagram of an on-off metal structure according to the present invention.
Fig. 10 is a schematic diagram of an on-off metal explosion structure of the present invention.
Reference numerals: 1. a housing; 2. a base; 3. switching on and off metal; 4. a blasting chamber; 5. a positioning block; 7. an arc extinguishing chamber; 8. breaking the slot; 9. a swinging groove; 10. a swing section; 12. arc extinguishing grid; 13. a U-shaped incision; 14. an air guide cambered surface; 15. a pressure relief channel; 16. a partition plate; 17. a pressure relief hole; 18. filtering cotton; 19. a diverter plate; 20. a limiting block; 21. a baffle plate; 22. a clamping groove; 111. an arc extinguishing part; 112. an exhaust unit; 62. an ignition end; 61. and (5) blasting the end.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the following description of the present application will be made in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
According to the blasting circuit breaker with the arc extinguishing grid, the V-shaped arc extinguishing grid is formed, so that enough space is reserved between the air guide cambered surface and the arc extinguishing grid for gas exchange, and the gas conduction is further quickened; the explosion cavity is arranged on one side of the on-off metal and is in an elliptical shape, and a horn mouth shape is formed, so that the elliptical mouth is tightly close to the edge of the on-off metal, and then the break-off groove can be rapidly cut off without larger impact force when explosion occurs.
A blast circuit breaker with arc chute, comprising:
the explosion-proof device comprises an arc extinguishing part 111, an exhaust part 112, a breaking groove 8, an ignition end 62, a blasting end 61, a swinging groove 9, a swinging section 10, an arc extinguishing cavity 7, an arc extinguishing grid 12, an air guide arc surface 14, filter cotton 18, a pressure relief channel 15, a partition plate 16, a flow dividing plate 19, on-off metal 3, a pressure relief hole 17, a base 2, a shell 1, a blasting cavity 4, a limiting block 20, a baffle plate 21, a clamping groove 22, a U-shaped notch 13 and a positioning block 5.
Wherein, the shell 1, the said shell 1 locates at one side of said arc-extinguishing grating 12 and has air-guiding cambered surface 14; the air guide cambered surface 14 is in two semicircular arcs, and the two semicircular arcs are tangent; the tangent positions of the two semicircular arcs correspond to the positions of the breaking grooves 8, so that gas is guided to be conducted to two sides; the shell 1 with be provided with the filter pulp 18 between the pressure release passageway 15, the pressure release hole 17 cover on the filter pulp 18, and then separate the flying chip that the blasting produced, avoid splashing out of the shell 1.
An on-off metal 3 mounted on the housing 1, and a base 2 mounted on the on-off metal 3; the shell 1 is in threaded connection with the base 2, the on-off metal 3 is arranged between the shell 1 and the base 2, and a blasting assembly is arranged between the on-off metal 3 and the base 2; the blasting assembly comprises a blasting chamber 4 and an igniter arranged in the blasting chamber 4.
When the blasting assembly receives a signal explosion, the on-off metal 3 is blasted from the position of the breaking groove 8, current is cut off, under the impact of the explosion, the two swinging sections 10 rotate around the position of the swinging groove 9 and enter the arc extinguishing cavity 7, along with the rotation of the two swinging sections 10 in the directions away from each other, an electric arc generated at the position of the breaking groove 8 can be stretched by the two swinging sections 10, and as the explosion generates a vertical upward shock wave, the electric arc can be blown to the position of the arc extinguishing grid 12 and then cut into sections by the arc extinguishing grid 12, so that arc extinction is achieved, and high-pressure gas generated by the explosion is discharged out of the shell 1 through the pressure relief hole 17.
An elliptical opening is formed in one side of the explosion cavity 4, which is positioned on the on-off metal 3, a circular opening is formed in the other side of the explosion cavity 4, and the explosion cavity 4 is in a horn-shaped shape; the igniter comprises a blasting end 61, so that the edge of the on-off metal 3 is covered, and the blasting distance is shortened; and the ignition end 62 is arranged at one side of the explosion end 61, the position of the explosion cavity 4 corresponds to the position of the breaking groove 8, the elliptical opening is in conflict with the on-off metal 3, an interval is arranged between the explosion end 61 and the on-off metal 3, detonation fuel is arranged in the explosion end 61, and the ignition end 62 is electrically connected with a circuit control system through a wire.
The shell 1 and the on-off metal 3 jointly form an arc extinguishing cavity 7, one side of the on-off metal 3, which is positioned on the arc extinguishing cavity 7, is provided with a breaking groove 8 and two swinging grooves 9, one breaking groove 8 is positioned in the middle of the two swinging grooves 9, the distance from the breaking groove 8 to the swinging grooves 9 is a swinging section 10, the breaking groove 8 corresponds to the position of the blasting assembly, a middle seat is arranged in the arc extinguishing cavity 7, the middle seat is also provided with an arc extinguishing part 111 and two exhaust parts 112, two groups of protection assemblies are arranged on two sides of the arc extinguishing part 111, which are positioned on the arc extinguishing grating 12, and each protection assembly comprises a group of limiting blocks 20 and a blocking plate 21; the limiting blocks 20 are positioned on two sides of the arc extinguishing grid 12; and is provided on the side wall of the arc extinguishing part 111; the spacing between the limiting blocks 20 is 1-2mm smaller than the width of the corresponding part of the swinging section 10; a group of limiting blocks 20 clamp the swinging section 10 which swings after explosion; the two baffle plates 21 are parallel to each other and perpendicular to the on-off metal 3; the baffle plate 21 is disposed adjacent to the stopper 20 on the side wall of the arc extinguishing portion 111; the baffle plate 21 prevents the swinging section 10 swinging after blasting from colliding with the middle seat; the two groups of protection components are respectively used for protecting two swinging sections 10 of the on-off metal 3 after blasting occurs; a gap is reserved between the baffle plate 21 and the arc extinguishing grid 12; a positioning block 5 is arranged at the matching position of the middle seat and the on-off metal 3; the positioning block 5 is arranged on the middle seat, so that the on-off metal 3 is fixed, and the position of the breaking groove 8 far from the blasting cavity 4 is avoided when the on-off metal 3 is connected.
The arc extinguishing part 111 is provided between the two exhaust parts 112; the arc extinguishing part 111 is provided with a plurality of arc extinguishing grids 12, the arc extinguishing grids 12 are arranged on one side of the on-off metal 3 in a V shape, and an opening of the V shape is arranged on one side of the shell 1, so that when the on-off metal 3 is disconnected, the arc extinguishing grids 12 are contacted at the first time, and arc discharge is avoided; the arc extinguishing grid 12 is positioned on one side of the on-off metal 3 and provided with a U-shaped notch 13, so that an electric arc is cut, and the arc is extinguished in a segmented mode.
A clamping groove 22 is arranged among the arc extinguishing bars 12; the clamping groove 22 is formed at the arc extinguishing part 111; the arc extinguishing bars 12 are arranged in parallel and are provided with a certain distance interval, and the arc extinguishing bars 12 are positioned between the shell 1 and the on-off metal 3; the arc-extinguishing gate 12 is arranged according to the swinging radian of the swinging section 10, and a gap is formed between the arc-extinguishing gate 12 and the swinging section 10; the arc extinguishing bars 12 are parallel to the breaking grooves 8.
The exhaust part 112 is provided with pressure relief channels 15 on two sides of the arc extinguishing grating 12, and the pressure relief is separated by a separation plate 16; a splitter plate 19 is also arranged between the splitter plates 16; the splitter plate 19 is arranged parallel to the splitter plate 16; the pressure release channel 15 is communicated with the arc extinguishing grid 12, and a plurality of pressure release holes 17 are formed in the position of the pressure release channel 15 of the shell 1, so that the gas is discharged.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that variations and modifications can be made by those skilled in the art without departing from the spirit of the present application, which falls within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (9)
1. A blast circuit breaker with arc chute, characterized in that: the device comprises a shell, on-off metal arranged on the shell and a base arranged on the on-off metal; the shell is in threaded connection with the base, the on-off metal is arranged between the shell and the base, and a blasting assembly is arranged between the on-off metal and the base;
the shell and the on-off metal jointly form an arc extinguishing cavity, one side of the on-off metal, which is positioned in the arc extinguishing cavity, is provided with a breaking groove and two swinging grooves, one breaking groove is positioned in the middle of the two swinging grooves, the distance from the breaking groove to the swinging grooves is a swinging section, the breaking groove corresponds to the position of the blasting assembly, a middle seat is arranged in the arc extinguishing cavity, the middle seat is also provided with an arc extinguishing part and two exhaust parts, and the arc extinguishing part is arranged between the two exhaust parts; the arc extinguishing part is provided with a plurality of arc extinguishing grids, and clamping grooves are formed among the arc extinguishing grids; the clamping groove is formed in the arc extinguishing part; the arc extinguishing grids are arranged in parallel and are provided with intervals with a certain distance, and the arc extinguishing grids are positioned between the shell and the on-off metal; the arc-extinguishing gate is arranged according to the swinging radian of the swinging section, and a gap is formed between the arc-extinguishing gate and the swinging section; and a plurality of arc extinguishing grids are parallel to the breaking grooves.
2. A blast circuit breaker with arc chute according to claim 1, wherein: the explosion assembly comprises an explosion cavity and an igniter arranged in the explosion cavity, wherein an elliptical opening is formed in one side of the explosion cavity, which is positioned on the on-off metal side, a circular opening is formed in the other side of the explosion cavity, and the explosion cavity is in a horn mouth shape; the ignition tool comprises a blasting end and an ignition end arranged on one side of the blasting end, the position of the blasting cavity corresponds to the position of the breaking groove, the elliptical opening is in conflict with the on-off metal, an interval is arranged between the blasting end and the on-off metal, detonation fuel is arranged in the blasting end, and the ignition end is electrically connected with the circuit control system through a wire.
3. A blast circuit breaker with arc chute according to claim 2, wherein: the arc extinguishing bars are arranged on one side of the on-off metal and are arranged in a V shape, and the opening of the V shape is arranged on one side of the shell.
4. A blast circuit breaker with arc chute according to claim 3, wherein: the arc extinguishing grid is positioned at one side of the on-off metal and is provided with a U-shaped notch.
5. A blast circuit breaker with arc chute according to claim 1, wherein: an air guide cambered surface is arranged on one side of the shell, which is positioned on the arc extinguishing gate; the air guide arc surface is two semicircular arcs, and the two semicircular arcs are tangent; the tangent position of the two semicircular arcs corresponds to the position of the breaking groove.
6. A blast circuit breaker with arc chute according to claim 5, wherein: the exhaust part is positioned at two sides of the arc extinguishing grid and is provided with pressure relief channels, and the pressure relief channels are separated by a separation plate; a splitter plate is arranged between the splitter plates; the splitter plate is arranged in parallel with the splitter plate; the pressure relief channel is communicated with the arc extinguishing grid, and a plurality of pressure relief holes are formed in the position of the pressure relief channel of the shell.
7. A blast circuit breaker with arc chute according to claim 6, wherein: and filter cotton is arranged between the shell and the pressure relief channel, and the pressure relief holes are covered on the filter cotton.
8. A blast circuit breaker with arc chute according to claim 1, wherein: two groups of protection components are arranged on two sides of the arc extinguishing part, which are positioned on the arc extinguishing gate, and each protection component comprises a group of limiting blocks and a baffle plate; the limiting blocks are positioned on two sides of the arc extinguishing grid; and is arranged on the side wall of the arc extinguishing part; the space between the limiting blocks is 1-2mm smaller than the width of the corresponding part of the swinging section; a group of limiting blocks clamp the swinging section which swings after explosion; the two baffle plates are parallel to each other and are perpendicular to the on-off metal; the baffle plate and the limiting block are adjacently arranged on the side wall of the arc extinguishing part; the baffle plate prevents the swing section which swings after blasting from colliding with the middle seat; the two groups of protection components are respectively used for protecting two swinging sections of on-off metal after blasting.
9. A blast circuit breaker with arc chute according to claim 8, wherein: a gap is reserved between the baffle plate and the arc extinguishing grid; a positioning block is arranged at the matching position of the middle seat and the on-off metal; the positioning block is arranged on the middle seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310322216.9A CN116364501A (en) | 2023-03-29 | 2023-03-29 | Blasting type circuit breaker with arc extinguishing grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310322216.9A CN116364501A (en) | 2023-03-29 | 2023-03-29 | Blasting type circuit breaker with arc extinguishing grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116364501A true CN116364501A (en) | 2023-06-30 |
Family
ID=86935904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310322216.9A Withdrawn CN116364501A (en) | 2023-03-29 | 2023-03-29 | Blasting type circuit breaker with arc extinguishing grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116364501A (en) |
-
2023
- 2023-03-29 CN CN202310322216.9A patent/CN116364501A/en not_active Withdrawn
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Application publication date: 20230630 |