CN111477522A - Arc extinguishing device of circuit breaker - Google Patents
Arc extinguishing device of circuit breaker Download PDFInfo
- Publication number
- CN111477522A CN111477522A CN202010578054.1A CN202010578054A CN111477522A CN 111477522 A CN111477522 A CN 111477522A CN 202010578054 A CN202010578054 A CN 202010578054A CN 111477522 A CN111477522 A CN 111477522A
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- Prior art keywords
- guide rod
- installation shell
- switching
- contact
- handle
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- 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
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
The invention discloses an arc extinguishing device of a circuit breaker, which comprises an installation shell, wherein the installation shell is of a cuboid structure, the top of the installation shell is provided with a dodging groove, a trigger mechanism and a cooling mechanism for cooling and extinguishing arcs are arranged in the installation shell, a switching-on and switching-off assembly is arranged in the installation shell, a guide rod I is horizontally arranged in the installation shell and is arranged on the top wall of the installation shell, two guide rods I are arranged in parallel, one guide rod I is arranged on one side of the dodging groove, when a circuit is in fault and short circuit, the current flowing through an electromagnet is larger, the electromagnet attracts an armature, so that a switching-on and switching-off handle is attracted to move towards the direction close to the electromagnet along the guiding direction of the guide rod I, then the contact I and the contact II are separated, an arc is formed between the contact I and the contact II, and the cooling mechanism can work to form the arc, thereby performing open circuit protection on the circuit.
Description
Technical Field
The invention relates to the technical field of hoisting and carrying, in particular to an arc extinguishing device of a circuit breaker.
Background
Arcing is a gas discharge phenomenon, a transient spark generated by the passage of current through some insulating medium (e.g., air). The arc is a self-sustaining gas-conducting, in which the majority of the carriers are electrons generated by primary electron emission, the electrons escape from the metal surface of the contact due to the primary electron emission, and the gas atoms or molecules in the gap are ionized to generate electrons and ions. In addition, electron or ion bombardment of the emission surface can in turn cause secondary electron emission. When the ion concentration in the gap is large enough, the gap is broken down by electricity to generate electric arcs, the electric arcs prolong the sectional time of a circuit, and insulating materials near electric shock and electric shock are burnt, so that people get electric shock when the electric shock is serious.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide an arc extinguishing device of a circuit breaker.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
A circuit breaker arc extinguishing device, comprising:
the installation shell is of a cuboid structure, the top of the installation shell is provided with an avoiding groove, a trigger mechanism and a cooling mechanism for cooling and arc extinguishing of electric arcs are arranged in the installation shell, a switching-on and switching-off component is arranged in the installation shell, the switching-on and switching-off component penetrates out of the avoiding groove, the trigger mechanism comprises an electromagnet and a contact II, the switching-on and switching-off component comprises a first guide rod and a second switching-off handle, the first guide rod is horizontally arranged in the installation shell, the first guide rod is arranged on the top wall of the installation shell, the first guide rod is provided with two guide rods which are arranged in parallel, one guide rod is arranged on one side of the avoiding groove and is parallel to the length direction of the installation shell, the first switching-off and switching-on handles are sleeved on the first guide rods, the upper end part of the first switching-off and switching-on handles penetrates through the avoiding groove to the outside, the electromagnetic switch is characterized in that an armature is arranged on one plate surface of the switch-on/off handle, the armature and the electromagnet are arranged oppositely, a first contact is arranged on the other plate surface of the switch-on/off handle, a second contact is arranged on one side of the first contact and is in contact with the first contact, the second contact is connected with a live wire, and the cooling mechanism is connected with the lower end part of the switch-on/off handle.
As a further improvement of the technical proposal, the cooling mechanism comprises a second guide rod, a rack, a rotating shaft, a gear, a driving pulley, a driven pulley and fan blades, wherein the second guide rod is horizontally arranged in the installation shell, one end of the second guide rod is connected with one end of the length direction of the installation shell, the other end of the second guide rod is connected with the other end of the length direction of the installation shell, the two second guide rods are arranged in parallel, the rack is sleeved on the second guide rod, the rack is horizontally arranged, the bottom of the opening and closing handle is connected with the upper end surface of the rack, an installation block is arranged in the installation shell and positioned at the bottom of the installation shell, the rotating shaft horizontally penetrates through the installation block, the rotating shaft is parallel to the second guide rod, the gear is coaxially and fixedly sleeved at one end of the rotating shaft, the driving pulley is coaxially and fixedly sleeved at the other end of the, the activity is provided with the connecting axle in the backup pad, and the connecting axle is the level and arranges and parallel with the pivot, the coaxial fixed cover of driven pulley locate the one end of connecting axle, through belt transmission between driving pulley and the driven pulley, the flabellum evenly surrounds in the other end of connecting axle, the flabellum is close to contact one, contact two.
As a further improvement of the technical scheme, an overload protection mechanism is arranged in the installation shell and comprises a connecting plate, an overload expansion sheet, a third guide rod, a limiting block and a second spring, a mounting plate is vertically arranged in the installation shell and is close to the opening and closing handle, the connecting plate is arranged on one side of the mounting plate in parallel, the mounting plate is arranged between the connecting plate and the opening and closing handle, the overload expansion sheet is arranged between the mounting plate and the connecting plate and is contacted with the mounting plate and the connecting plate, the third guide rod is horizontally connected on the connecting plate, one end of the third guide rod penetrates through the plate surface of the connecting plate, the other end of the third guide rod is connected with the limiting block, the second spring is arranged on the third guide rod, one end of the second spring is abutted against the limiting block, the other end of the second spring is abutted against the connecting plate, the, the first spring is far away from the electromagnet and is in a compressed state.
As a further improvement of the technical scheme, the limiting groove is an arc-shaped groove.
Compared with the prior art, the invention has the advantages that in the using process, when a circuit is in fault and short circuit, the current flowing through the electromagnet is larger, the cooling mechanism works to form electric arcs between the first contact and the second contact to extinguish the arcs, so that the circuit is subjected to open circuit protection, burning damage and electric shock are avoided, casualties are avoided, when the circuit is overloaded, the overload expansion piece expands, the first contact and the second contact are separated, the circuit is disconnected, and the circuit is further subjected to power-off protection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the interior of the mounting housing of the present invention;
FIG. 3 is a schematic view of the trigger mechanism and cooling mechanism of the present invention;
FIG. 4 is a schematic view of the trigger mechanism of the present invention;
FIG. 5 is a schematic view of the overload protection mechanism of the present invention in cooperation with a switch-on/off handle;
FIG. 6 is a schematic view of the installation of the opening and closing handle of the present invention;
FIG. 7 is a schematic view of the overload protection mechanism of the present invention;
FIG. 8 is a schematic view of the cooling mechanism of the present invention;
fig. 9 is a schematic view of the rack and pinion arrangement of the present invention.
Labeled as:
10. installing a shell; 110. an avoidance groove; 120. a separating and combining component; 130. mounting a plate; 140. mounting blocks;
20. a trigger mechanism; 210. an electromagnet; 220. a first guide rod; 230. a switching-on and switching-off handle; 231. a bump; 240. a first spring; 250. a first contact; 260. a second contact; 270. an armature;
30. a cooling mechanism; 310. a second guide rod; 320. a rack; 330. a rotating shaft; 340. a gear; 350. a driving pulley; 360. a driven pulley; 370. a fan blade;
40. an overload protection mechanism; 410. a connecting plate; 420. an overload expansion sheet; 430. a third guide rod; 440. a limiting block; 450. and a second spring.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and the specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 9, an arc extinguishing apparatus for a circuit breaker includes:
the installation shell 10 is of a cuboid structure, the top of the installation shell 10 is provided with an avoiding groove 110, a trigger mechanism 20 and a cooling mechanism 30 for cooling and arc extinguishing of an electric arc are arranged in the installation shell 10, a switching component 120 is arranged in the installation shell 10, the switching component 120 penetrates out of the avoiding groove 110, the trigger mechanism 20 comprises an electromagnet 210 and a contact II 260, the switching component 120 comprises a first guide rod 220 and a switching handle 230, the first guide rod 220 is horizontally arranged in the installation shell 10, the first guide rod 220 is arranged on the top wall of the installation shell 10, the first guide rod 220 is provided with two guide rods and arranged in parallel, the first guide rod 220 is arranged on one side of the avoiding groove 110 in a separating mode, the first guide rod 220 is parallel to the length direction of the installation shell 10, the switching handle 230 is sleeved on the first guide rods 220, the upper end of the switching handle 230 penetrates through the avoiding groove 110 to the outside of the installation shell 10, the electromagnet 210 is arranged on one side of the switching handle 230, the electromagnet 210 and the switching handle 230 are connected through a live wire, an armature 270 is arranged on one plate surface of the switching handle 230, the armature 270 is arranged opposite to the electromagnet 210, a first contact 250 is arranged on the other plate surface of the switching handle 230, a second contact 260 is arranged on one side of the first contact 250 and is in contact with the first contact 250, the second contact 260 is connected with the live wire, the cooling mechanism 30 is connected with the lower end portion of the switching handle 230, when a fault short circuit occurs to a circuit, the current flowing through the electromagnet 210 is large, the electromagnet 210 attracts the armature 270, so that the switching handle 230 is attracted to move towards the electromagnet 210 along the guide direction of the first guide rod 220, then the first contact 250 and the second contact 260 are separated, an electric arc is formed between the first contact 250 and the second contact 260, and the switching handle 230 moves towards the electromagnet 210 along the guide direction of the first guide rod 220, the switching-on and switching-off handle 230 drives the cooling mechanism 30 to work, and the cooling mechanism 30 works to form electric arcs between the first contact 250 and the second contact 260 for arc extinction, so that the circuit is protected from being broken.
As shown in fig. 3 and 8-9, the cooling mechanism 30 includes a second guide rod 310, a rack 320, a rotating shaft 330, a gear 340, a driving pulley 350, a driven pulley 360, and a fan blade 370, the second guide rod 310 is horizontally disposed in the installation housing 10, one end of the second guide rod 310 is connected to one end of the installation housing 10 in the length direction, and the other end is connected to the other end of the installation housing 10 in the length direction, the second guide rod 310 is provided with two guide rods and arranged in parallel, the rack 320 is sleeved on the second guide rod 310, the rack 320 is horizontally arranged, the bottom of the opening and closing handle 230 is connected to the upper end surface of the rack 320, an installation block 140 is disposed in the installation housing 10 at the bottom thereof, the rotating shaft 330 horizontally passes through the installation block 140, the rotating shaft 330 is parallel to the second guide rod 310, the gear 340 is coaxially and fixedly sleeved on one end of the rotating shaft 330, the driving, the gear 340 is engaged with the rack 320, a support plate is arranged in the installation shell 10 and on the top wall of the installation shell, a connecting shaft is movably arranged on the support plate, the connecting shaft is horizontally arranged and parallel to the rotating shaft 330, the driven pulley 360 is coaxially and fixedly sleeved at one end of the connecting shaft, the driving pulley 350 and the driven pulley 360 are in transmission through a belt, the fan blades 370 uniformly surround the other end of the connecting shaft, the fan blades 370 are close to the first contact 250 and the second contact 260, when the opening and closing handle 230 moves along the guide direction of the first guide rod 220 to the direction close to the electromagnet 210, the rack 320 moves along the second guide rod 310 to drive the gear 340 to rotate, the gear 340 rotates to drive the rotating shaft 330 to rotate, the driving pulley 350 is driven to rotate, the driven pulley 360 is driven to rotate, the connecting shaft is driven to rotate, the fan blades 370 are driven to rotate, and the arc formed between the second contact 260 is cooled and extinguished.
As shown in fig. 5 to 7, in order to perform overload protection on a circuit, an overload protection mechanism 40 is arranged in the installation housing 10, the overload protection mechanism 40 includes a connection plate 410, an overload expansion sheet 420, a third guide rod 430, a limit block 440, and a second spring 450, the installation housing 10 is vertically provided with the installation plate 130, the installation plate 130 is close to the switching-on/off handle 230, the connection plate 410 is arranged at one side of the installation plate 130 in parallel, the installation plate 130 is arranged between the connection plate 410 and the switching-off handle 230, the overload expansion sheet 420 is arranged between the installation plate 130 and the connection plate 410, the overload expansion sheet 420 is in contact with the installation plate 130 and the connection plate 410, the third guide rod 430 is horizontally connected to the connection plate 410, one end of the third guide rod 430 penetrates through the plate surface of the connection plate 410, the other end of the third guide rod 440 is connected to the limit block, The other end of the connecting rod abuts against the connecting plate 410, a limiting groove is formed in the limiting block 440 and is an arc-shaped groove, a convex block 231 is arranged on the side wall of the opening and closing handle 230, the convex block 231 is arranged in the limiting groove of the limiting block 440 in a matched mode, a first spring 240 is sleeved on the first guide rod 220, one end of the first spring 240 abuts against the opening and closing handle 230, the other end of the first spring is connected with the end portion of the first guide rod 220, the first spring 240 is far away from the electromagnet 210, the first spring 240 is in a compressed state, when the circuit is overloaded, the overload expansion piece 420 expands, the connecting plate 410 drives a third guide rod 430 to move in the direction far away from the opening and closing handle 230, the convex block 231 is separated from the limiting block 440, the elasticity of the first spring 240 pushes the opening and closing handle 230 to move in the direction close.
The working principle is as follows:
in the using process of the invention, when a circuit is in fault and short circuit, the current flowing through the electromagnet 210 is large, the electromagnet 210 attracts the armature 270, thereby attracting the opening and closing handle 230 to move towards the direction close to the electromagnet 210 along the guiding direction of the guide rod one 220, then the contact one 250 and the contact two 260 are separated, an electric arc is formed between the contact one 250 and the contact two 260, in the process that the opening and closing handle 230 moves towards the direction close to the electromagnet 210 along the guiding direction of the guide rod one 220, the opening and closing handle 230 drives the cooling mechanism 30 to work, the cooling mechanism 30 can work to form the electric arc between the contact one 250 and the contact two 260 for arc extinguishing, thereby carrying out open circuit protection on the circuit, in the process that the opening and closing handle 230 moves towards the direction close to the electromagnet 210 along the guiding direction of the guide rod one 220, the rack 320 moves along the guide rod two 310, thereby driving the gear 340 to rotate, the gear 340 rotates, thereby drive driving pulley 350 and rotate to drive driven pulley 360 and rotate, drive the connecting axle and rotate subsequently, thereby drive flabellum 370 and rotate, flabellum 370 rotates and can cool off the electric arc that forms between contact one 250, contact two 260 and put out the arc, when the circuit appears transshipping, overload expansion piece 420 expands, thereby make connecting plate 410 drive guide arm three 430 to move to the direction of keeping away from divide-shut brake handle 230, lug 231 separates with stopper 440, the elasticity of spring one 240 promotes divide-shut brake handle 230 to move to the direction of being close to electro-magnet 210, contact one 250, contact two 260 separate, the circuit disconnection.
It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.
Claims (4)
1. An arc extinguishing device of a circuit breaker, characterized in that it comprises:
the installation shell is of a cuboid structure, the top of the installation shell is provided with an avoiding groove, a trigger mechanism and a cooling mechanism for cooling and arc extinguishing of electric arcs are arranged in the installation shell, a switching-on and switching-off component is arranged in the installation shell, the switching-on and switching-off component penetrates out of the avoiding groove, the trigger mechanism comprises an electromagnet and a contact II, the switching-on and switching-off component comprises a first guide rod and a second switching-off handle, the first guide rod is horizontally arranged in the installation shell, the first guide rod is arranged on the top wall of the installation shell, the first guide rod is provided with two guide rods which are arranged in parallel, one guide rod is arranged on one side of the avoiding groove and is parallel to the length direction of the installation shell, the first switching-off and switching-on handles are sleeved on the first guide rods, the upper end part of the first switching-off and switching-on handles penetrates through the avoiding groove to the outside, the electromagnetic switch is characterized in that an armature is arranged on one plate surface of the switch-on/off handle, the armature and the electromagnet are arranged oppositely, a first contact is arranged on the other plate surface of the switch-on/off handle, a second contact is arranged on one side of the first contact and is in contact with the first contact, the second contact is connected with a live wire, and the cooling mechanism is connected with the lower end part of the switch-on/off handle.
2. The arc extinguishing device of the circuit breaker according to claim 1, wherein the cooling mechanism comprises a second guide rod, a rack, a rotating shaft, a gear, a driving pulley, a driven pulley and a fan blade, the second guide rod is horizontally arranged in the installation shell, one end of the second guide rod is connected with one end of the installation shell in the length direction, the other end of the second guide rod is connected with the other end of the installation shell in the length direction, the second guide rod is provided with two guide rods which are arranged in parallel, the rack is sleeved on the second guide rod, the rack is arranged horizontally, the bottom of the opening and closing handle is connected with the upper end face of the rack, an installation block is arranged in the installation shell and positioned at the bottom of the installation shell, the rotating shaft horizontally penetrates through the installation block, the rotating shaft is parallel to the second guide rod, the gear is coaxially and fixedly sleeved at one end of the rotating shaft, the driving pulley is coaxially and fixedly sleeved at the, the activity is provided with the connecting axle in the backup pad, and the connecting axle is the level and arranges and parallel with the pivot, the coaxial fixed cover of driven pulley locate the one end of connecting axle, through belt transmission between driving pulley and the driven pulley, the flabellum evenly surrounds in the other end of connecting axle, the flabellum is close to contact one, contact two.
3. The arc extinguishing device of the circuit breaker according to claim 2, characterized in that an overload protection mechanism is arranged in the installation shell, the overload protection mechanism comprises a connecting plate, an overload expansion sheet, a third guide rod, a limiting block and a second spring, a mounting plate is vertically arranged in the installation shell, the mounting plate is close to the opening and closing handle, the connecting plate is arranged on one side of the mounting plate in parallel, the mounting plate is arranged between the connecting plate and the opening and closing handle, the overload expansion sheet is arranged between the mounting plate and the connecting plate, the overload expansion sheet is contacted with the mounting plate and the connecting plate, the third guide rod is horizontally connected on the connecting plate, one end of the third guide rod penetrates through the plate surface of the connecting plate, the other end of the third guide rod is connected with the limiting block, the second spring is abutted against the limiting block, the other end of the second spring, the lateral wall department of divide-shut brake handle be provided with the lug, the limiting groove of stopper is arranged in to the lug matching, guide arm one go up the cover and be equipped with spring one, the one end of spring one is contradicted with divide-shut brake handle, the end connection of the other end and guide arm one, the electro-magnet is kept away from to spring one, spring one is compression state.
4. The arc extinguishing device of the circuit breaker according to claim 3, wherein the limiting groove is an arc-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578054.1A CN111477522B (en) | 2020-06-23 | 2020-06-23 | Arc extinguishing device of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578054.1A CN111477522B (en) | 2020-06-23 | 2020-06-23 | Arc extinguishing device of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111477522A true CN111477522A (en) | 2020-07-31 |
| CN111477522B CN111477522B (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010578054.1A Active CN111477522B (en) | 2020-06-23 | 2020-06-23 | Arc extinguishing device of circuit breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN111477522B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151288A (en) * | 2020-09-25 | 2020-12-29 | 南京栢洁网络科技有限公司 | Circuit protection intelligence circuit breaker device based on electromagnetic induction |
| CN112164630A (en) * | 2020-09-29 | 2021-01-01 | 广东求精电气有限公司 | Circuit breaker |
| CN114024215A (en) * | 2022-01-06 | 2022-02-08 | 山东广域科技有限责任公司 | Power distribution station feeder safety device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2585838A (en) * | 2019-07-16 | 2021-01-27 | Eaton Intelligent Power Ltd | Hybrid circuit breaker with improved current capacity per device size |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204375605U (en) * | 2015-01-23 | 2015-06-03 | 国网河南省电力公司驻马店供电公司 | A kind of efficient arc extinguishing power switch with heat sinking function |
| CN106206109A (en) * | 2016-07-22 | 2016-12-07 | 王波 | A kind of electric power switch unit |
| CN209929255U (en) * | 2019-07-26 | 2020-01-10 | 东北石油大学 | Magnetic blow-out arc-extinguishing breaker structure |
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2020
- 2020-06-23 CN CN202010578054.1A patent/CN111477522B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204375605U (en) * | 2015-01-23 | 2015-06-03 | 国网河南省电力公司驻马店供电公司 | A kind of efficient arc extinguishing power switch with heat sinking function |
| CN106206109A (en) * | 2016-07-22 | 2016-12-07 | 王波 | A kind of electric power switch unit |
| CN209929255U (en) * | 2019-07-26 | 2020-01-10 | 东北石油大学 | Magnetic blow-out arc-extinguishing breaker structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151288A (en) * | 2020-09-25 | 2020-12-29 | 南京栢洁网络科技有限公司 | Circuit protection intelligence circuit breaker device based on electromagnetic induction |
| CN112164630A (en) * | 2020-09-29 | 2021-01-01 | 广东求精电气有限公司 | Circuit breaker |
| CN114024215A (en) * | 2022-01-06 | 2022-02-08 | 山东广域科技有限责任公司 | Power distribution station feeder safety device |
| CN114024215B (en) * | 2022-01-06 | 2022-03-11 | 山东广域科技有限责任公司 | Power distribution station feeder safety device |
Also Published As
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|---|---|
| CN111477522B (en) | 2020-11-13 |
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Inventor after: Yao Jipeng Inventor after: Li Xin Inventor before: Li Xin |
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Effective date of registration: 20201029 Address after: 20 / F, Sanhang science and technology building, northwest Polytechnic University, No. 45, Gaoxin South ninth Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Weiyu Intelligent Technology Co.,Ltd. Address before: 210000 No.2 rose garden, Ningguang community, Hengxi street, Jiangning District, Nanjing City, Jiangsu Province Applicant before: Nanjing dace Culture Communication Co.,Ltd. |
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