CN117497382B - Circuit breaker with double arc-extinguishing chambers - Google Patents
Circuit breaker with double arc-extinguishing chambers Download PDFInfo
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- CN117497382B CN117497382B CN202311285254.8A CN202311285254A CN117497382B CN 117497382 B CN117497382 B CN 117497382B CN 202311285254 A CN202311285254 A CN 202311285254A CN 117497382 B CN117497382 B CN 117497382B
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- extinguishing chamber
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- 230000008033 biological extinction Effects 0.000 claims abstract description 5
- 230000003068 static effect Effects 0.000 claims description 25
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims 4
- 238000004880 explosion Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
- 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
- H01H73/04—Contacts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention provides a circuit breaker with double arc-extinguishing chambers, which comprises a bottom cover, wherein an arc-extinguishing chamber is arranged in the bottom cover, the arc-extinguishing chamber comprises arc-extinguishing side plates A, arc-extinguishing chamber grid plates A and arc-extinguishing chambers, the arc-extinguishing chamber grid plates A are U-shaped plates, grooves are formed in the outer sides of the arc-extinguishing chamber grid plates A, a plurality of arc-extinguishing chamber grid plates A are arranged between the two arc-extinguishing side plates A, the arc-extinguishing chamber grid plates A are vertically arranged, gaps with equal distance are reserved between every two arc-extinguishing chamber grid plates A, the adjacent arc-extinguishing chamber grid plates A are oppositely arranged, so that inner side inclined grooves are in a crossed shape, and the grooves are in an aligned state; an arc-extinguishing cover is arranged at a position which is in front of the inner side of the arc-extinguishing side plate A; the arc-extinguishing side plate A, the arc-extinguishing chamber grid plate A and the arc-extinguishing chamber form a first arc-extinguishing chamber for arc extinction; adopt two explosion chambers, two explosion chambers splice together, and the arc chute piece of second explosion chamber is arranged respectively in the centre of first explosion chamber arc chute piece, has improved the arc extinguishing ability, has improved the short circuit breaking capacity of direct current circuit breaker greatly.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a circuit breaker with double arc-extinguishing chambers.
Background
A circuit breaker (english name: circuit breaker) refers to a switching device capable of closing, carrying and breaking a current under normal circuit conditions and capable of closing, carrying and breaking a current under abnormal circuit conditions for a prescribed time, but when the circuit breaker is opened and closed during use, an arc is generated, and although the conventional circuit breaker can extinguish the arc, the arc extinguishing effect is poor.
The invention of patent number CN201710697348.4 discloses an arc-extinguishing device of a circuit breaker, which consists of an arc-extinguishing chamber, an arc-extinguishing channel and an arc-extinguishing grid sheet group positioned in the arc-extinguishing chamber, wherein the arc-extinguishing grid sheet group comprises a plurality of arc-extinguishing grid sheets; the arc runner is positioned between a first arc striking plate in a U shape and a second arc striking plate in an arc shape, one end of the first arc striking plate extends to the arc extinguishing grid sheet group, and the other end of the first arc striking plate extends to a fixed contact of the circuit breaker; one end of the second arc striking plate extends to the arc extinguishing grid sheet group, and the other end of the second arc striking plate extends towards the moving contact of the circuit breaker and corresponds to the position of the moving track of the moving contact of the circuit breaker; the arc extinguishing gate sheet in the middle of the arc extinguishing gate sheet group extends towards the arc running channel to form a contact pin, and the arc running channel close to the arc extinguishing gate sheet group is divided into a first arc running channel and a second arc running channel by the contact pin. The arc extinguishing device can shorten the arc extinguishing time and improve the survivability of the circuit breaker under the condition of short-circuit large current.
But above-mentioned circuit breaker adopts the design of different arc extinguishing runways to improve the arc extinguishing effect, and its arc extinguishing effect receives the restriction of arc extinguishing runway, to wanting to improve the arc extinguishing effect again can't improve, consequently in order to continue to improve the arc extinguishing effect, need an additional structure to carry out the arc extinguishing, consequently need a mode through increasing the explosion chamber to increase the arc extinguishing effect.
Disclosure of Invention
Aiming at the problems, the invention provides the circuit breaker with the double arc-extinguishing chambers, the double arc-extinguishing chambers are adopted, the two arc-extinguishing chambers are spliced together, and the arc-extinguishing grid plates of the second arc-extinguishing chamber are respectively arranged in the middle of the arc-extinguishing grid plates of the first arc-extinguishing chamber, so that the arc-extinguishing capacity is improved, and the short-circuit breaking capacity of the direct-current circuit breaker is greatly improved.
The technical scheme adopted by the invention is as follows: the circuit breaker with the double arc-extinguishing chambers comprises a bottom cover, wherein the arc-extinguishing chambers are arranged in the bottom cover and comprise arc-extinguishing side plates A, arc-extinguishing chamber grid plates A and arc-extinguishing chambers, the arc-extinguishing chamber grid plates A are concave, the concave bottom surfaces of the arc-extinguishing chamber grid plates A are inclined planes, a plurality of concave cambered surfaces are arranged at the bottoms of the arc-extinguishing chamber grid plates A, the arc-extinguishing chamber grid plates A are arranged between the two arc-extinguishing side plates A vertically, gaps with equal distance are reserved between every two arc-extinguishing chamber grid plates A, the adjacent arc-extinguishing chamber grid plates A are oppositely arranged, so that inner side inclined grooves are in a cross shape, and the outer grooves of the arc-extinguishing chamber grid plates A are in an aligned state; an arc-extinguishing cover is arranged at a position which is in front of the inner side of the arc-extinguishing side plate A; the arc-extinguishing side plate A, the arc-extinguishing chamber grid plate A and the arc-extinguishing chamber form a first arc-extinguishing chamber for arc extinction;
The arc-extinguishing chamber further comprises an arc-extinguishing side plate B and an arc-extinguishing chamber grid plate B; the arc extinguishing chamber grid plates B are arranged between the two arc extinguishing side plates B; the arc-extinguishing side plate B is positioned at the rear side of the arc-extinguishing side plate A; the arc-extinguishing chamber grid sheet B is rectangular, a plurality of convex cambered surfaces are arranged at the top of the arc-extinguishing chamber grid sheet B, and the arc-extinguishing chamber grid sheets B are arranged between the two arc-extinguishing side plates B; the arc-extinguishing chamber grid plates B are vertically arranged, and each arc-extinguishing chamber grid plate B is opposite to a gap between two adjacent arc-extinguishing chamber grid plates A; the convex cambered surface at the top of the arc-extinguishing chamber grid sheet B is in staggered fit with the concave cambered surface at the bottom of the arc-extinguishing chamber grid sheet A in space; the arc-extinguishing side plate B and the arc-extinguishing chamber grid plate B form a second arc-extinguishing chamber, and the second arc-extinguishing chamber is used for extinguishing the arc which is not extinguished by the first arc-extinguishing chamber.
Preferably, the arc extinguishing device further comprises a static contact, wherein the static contact is arranged at the rear end of the static cover, the static cover and the static contact are combined into a Z shape, and the static cover and the static contact are arranged below the two arc extinguishing side plates A.
Preferably, the fixed block is arranged on the static cover, a chute is arranged on the fixed block, a shielding plate is slidably arranged in the chute of the fixed block, a spring is arranged on the shielding plate, and the other end of the spring is fixedly arranged in the fixed block so as to enable the two shielding plates to be in contact; and an inclined plane block B is arranged on the shielding plate.
Preferably, the device also comprises clamping plates, wherein the two clamping plates are fixedly connected through a connecting shaft, the lever is rotatably arranged in a semicircular groove of the clamping plates, and the handle is fixedly arranged on the lever; the upper connecting rod and the lower connecting rod are fixedly connected through a shaft; one end of the lever spring is arranged on the shaft of the lower connecting rod, and the other end of the lever spring is arranged on the lever; the traction rod is rotatably arranged on the inner side of the bottom cover.
Preferably, a clamping groove and a pushing plate are arranged on the traction rod, the clamping groove can be clamped with a clamping plate at the tail end of the rebuckling device, and the rebuckling device is rotatably arranged on a shaft of the clamping plate; the pushing plate arranged on the traction rod is contacted with the push rod of the thermal element mechanism; the thermal element mechanism is mounted inside the bottom cover.
Preferably, one end of the moving contact is fixedly arranged on the rotating shaft, and an inclined plane block A is arranged on the other end of the moving contact.
Preferably, the stationary contact is made of a high-temperature-resistant flame-retardant material of the PA arc-extinguishing chamber lever.
The invention has the beneficial effects that:
1. The invention adopts the double arc-extinguishing chambers, the two arc-extinguishing chambers are spliced together, and the arc-extinguishing gate sheets of the second arc-extinguishing chamber are respectively arranged in the middle of the arc-extinguishing gate sheets of the first arc-extinguishing chamber, thereby improving the arc-extinguishing capability and greatly improving the short-circuit breaking capability of the direct current breaker.
2. The invention is provided with a second arc-extinguishing chamber for extinguishing an arc which is not extinguished by the first arc-extinguishing chamber.
3. The static cover provided by the invention adopts the PA46 high-temperature resistant flame-retardant material, can prevent most of electric arcs from spraying to the mechanism side, and protects the circuit breaker.
4. According to the invention, the inclined surface block B is pushed by the inclined surface block A, so that the inclined surface block B and the shielding plate are pushed to two sides, and the connection part of the fixed contact and the movable contact is further realized, so that a circuit is connected, and the movable contact and the fixed contact are separated by the shielding plate to play a role in blocking, so that the arc generating distance is shortened, and the arc generation is reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of a part of the structure of the present invention.
Fig. 3 is a schematic view of the internal structure of the present invention.
Fig. 4 is a schematic diagram of an arc extinguishing structure according to the present invention.
Fig. 5 is a schematic cross-sectional view of the arc extinguishing structure of the present invention.
Fig. 6 is a schematic structural view of an arc extinguishing chamber grid B according to the present invention.
Fig. 7 is a schematic structural view of an arc extinguishing chamber grid sheet a of the present invention.
Fig. 8 is a schematic view of the installation position of two arc-extinguishing chamber grid plates a according to the invention.
Fig. 9 is a schematic view of the stationary shroud and stationary contact of the present invention.
Fig. 10 is a schematic view of the installation of the shield plate and the ramp block B of the present invention.
Fig. 11 is a schematic view of a first angle of a portion of the structure of the present invention.
Fig. 12 is a schematic view of a second angle of a portion of the structure of the present invention.
Fig. 13 is a schematic view of a third angle of a portion of the structure of the present invention.
Fig. 14 is a schematic view of a fourth angle of a partial structure of the present invention.
Fig. 15 is a schematic view of a fifth angle of a partial structure of the present invention.
Reference numerals and signs
1-A bottom cover; 2-an outer cover; 3-an arc-flash cover; 4-an arc extinguishing chamber; 5-a handle; 6-lever; 7-clamping plates; 8-lever springs; 9-an upper connecting rod; 10-jumping buckle; 11-connecting shaft; 12-locking; 13-re-buckling; 14-a traction rod; 15-a moving contact; 16-a bevel block A; 17-lower connecting rod; 18-rotating shaft; 19-a thermal element mechanism; 401-arc extinguishing side plate A; 402-arc-extinguishing chamber grid sheet A; 403-arc extinguishing chamber grid sheet B; 404-static cover; 405-stationary contact; 406-arc extinguishing side plate B; 407-arc chute; 4041-a fixed block; 4042-shielding plate; 4043-ramp block B.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The embodiment is shown in fig. 1-15, and the circuit breaker with double arc-extinguishing chambers comprises a bottom cover 1, wherein arc-extinguishing chambers 4,1 and 2 are arranged in the bottom cover 1 to form a circuit breaker shell, a groove is arranged on the upper surface 3, and a 5 is slidably arranged in the groove of the bottom cover 2; the arc extinguishing chamber 4 comprises arc extinguishing side plates A401, arc extinguishing chamber grid plates A402 and arc extinguishing chambers 407, wherein the arc extinguishing chamber grid plates A402 are concave, the bottom surface of the concave arc extinguishing chamber grid plates A402 is an inclined surface, a plurality of concave cambered surfaces (shown in figure 7) are arranged at the bottom of the arc extinguishing chamber grid plates A402, a plurality of arc extinguishing chamber grid plates A402 are arranged between the two arc extinguishing side plates A401, the arc extinguishing chamber grid plates A402 are vertically arranged, gaps with equal distance are reserved between every two arc extinguishing chamber grid plates A402, the adjacent two arc extinguishing chamber grid plates A402 are oppositely arranged, so that the inner inclined grooves are in a crossed shape (shown in figure 8), and the outer grooves of the inner inclined grooves are in an aligned state; an arc extinguishing chamber 407 is arranged at a position on the inner side of the arc extinguishing side plate A401 and in front; the arc-extinguishing side plate A401, the arc-extinguishing chamber grid plate A402 and the arc-extinguishing chamber 407 form a first arc-extinguishing chamber for arc extinction;
The arc extinguishing chamber 4 also comprises an arc extinguishing side plate B406 and an arc extinguishing chamber grid plate B403; a plurality of arc extinguishing chamber grid plates B403 are arranged between the two arc extinguishing side plates B406; arc extinguishing side plate B406 is positioned at the rear side of arc extinguishing side plate A401; the arc-extinguishing chamber grid sheet B403 is rectangular, a plurality of convex cambered surfaces are arranged at the top, the grooves can be round, triangular and trapezoidal (as shown in fig. 6), and a plurality of arc-extinguishing chamber grid sheets B403 are arranged between two arc-extinguishing side plates B406; the arc-extinguishing chamber grid plates B403 are vertically arranged, and each arc-extinguishing chamber grid plate B403 is opposite to a gap between two adjacent arc-extinguishing chamber grid plates A402; the convex cambered surface at the top of the arc-extinguishing chamber grid sheet B403 is in staggered fit with the concave cambered surface at the bottom of the arc-extinguishing chamber grid sheet A402 in space; the arc-extinguishing side plate B406 and the arc-extinguishing chamber grid plate B403 form a second arc-extinguishing chamber, and the second arc-extinguishing chamber is used for extinguishing the arc which is not extinguished by the first arc-extinguishing chamber; the circuit breaker adopts two explosion chambers, and two explosion chambers splice together, and the arc chute piece of second explosion chamber is arranged respectively in the centre of first explosion chamber arc chute piece, has improved the arc extinguishing ability, has improved the short circuit breaking capacity of direct current circuit breaker greatly.
In an alternative implementation manner of the embodiment of the invention, as shown in fig. 5, the device further comprises a static contact 405, the static contact 405 is installed at the rear end of the static cover 404, the static cover 404 and the static contact 405 are combined into a Z shape, the static cover 404 and the static contact 405 are installed below the two arc extinguishing side plates A401, and the static contact 405 is made of PA46 high temperature resistant flame retardant material and can conduct electricity; the static cover 404 is made of PA46 high-temperature resistant flame-retardant material, so that most of electric arcs can be prevented from being sprayed to the mechanism side, and the circuit breaker is protected.
In an alternative implementation manner of the embodiment of the present invention, as shown in fig. 9 and 10, a fixed block 4041 is provided on the static cover 404, a chute is provided on the fixed block 4041, a shielding plate 4042 is slidably installed in the chute of the fixed block 4041, a spring is provided on the shielding plate 4042, and the other end of the spring is fixedly installed in the fixed block 4041, and the spring generates elastic force to enable the two shielding plates 4042 to move towards each other, so that the two shielding plates 4042 are in contact; a bevel block B4043 is arranged on the shielding plate 4042; when the circuit breaker is opened, the two shielding plates 4042 are contacted under the action of the spring, so that the fixed contact 405 is isolated, and when the circuit breaker is closed, the inclined plane block A16 on the moving contact 15 pushes the inclined plane block B4043, so that the two shielding plates 4042 are separated, and the inclined plane block A16 is conveniently contacted with the fixed contact 405 of the bottom cover 1 for electrifying.
In an alternative implementation manner of the embodiment of the invention, as shown in fig. 11-15, the device further comprises a clamping plate 7, wherein the two clamping plates 7 are fixedly connected through a connecting shaft 11, a lever 6 is rotatably arranged in a semicircular groove of the clamping plate 7, and a handle 5 is fixedly arranged on the lever 6; the upper connecting rod 9 and the lower connecting rod 17 are fixedly connected through a shaft; one end of a lever spring 8 is arranged on the shaft of the lower connecting rod 17, the other end of the lever spring 8 is arranged on the lever 6, and the lever spring 8 plays a role in providing elasticity; the traction lever 14 is rotatably installed inside the bottom cover 1.
In an alternative implementation manner of the embodiment of the invention, as shown in fig. 11-15, a clamping groove and a pushing plate are arranged on the traction rod 14, the clamping groove can be clamped with a clamping plate at the tail end of the rebuckles 13, and the rebuckles 13 are rotatably arranged on the shaft of the clamping plate 7; the pushing plate arranged on the traction rod 14 is contacted with the push rod of the thermal element mechanism 19, and the thermal element mechanism 19 is arranged in the bottom cover 1; when overload or short circuit exists on the load side of the circuit breaker, the pushing rod in the thermal element mechanism 19 pushes the pushing plate on the traction rod 14 to further push the traction rod 14 to rotate, so that the clamping groove of the traction rod 14 is separated from the clamping plate at the tail end of the rebuckling 13, and further the circuit breaking is realized.
In an alternative implementation of the embodiment of the present invention, as shown in fig. 11-15, the stationary contact 405 is a PA arc-extinguishing chamber 4 lever 6 high temperature resistant flame retardant material. One end of the moving contact 15 is fixedly arranged on the rotating shaft 18, an inclined plane block A16 is arranged on the other end of the moving contact 15, the inclined plane block A16 is matched with the inclined plane block B4043, the inclined plane block B4043 is pushed by the inclined plane block A16, the inclined plane block B4043 and the shielding plate 4042 are pushed to two sides, and then the fixed contact 405 is connected with the moving contact 15, so that a circuit is connected, and therefore, the moving contact 15 and the fixed contact 405 play a role of blocking through the shielding plate 4042, the distance for generating an electric arc is shortened, and the generation of the electric arc is reduced.
The working principle of the invention is as follows: in the use process, the connected line is connected with the electric wire through the inlet at the upper end of the bottom cover 1, and then the connected electric wire is connected with the outlet at the lower end of the bottom cover 1; further arc extinction is achieved by the arrangement of the arcing shield 3;
In the locking state, the handle 5 is manually moved upwards, the handle 5 drives the lever 6 to further enable the lever 6 to rotate on the clamping plate 7, meanwhile, the lever 6 drives the jump button 10 to move backwards in parallel, and the jump button 10 pushes the lock catch 12 to move backwards in parallel; at the same time, the lock catch 12 pushes the rebuckles 13 to move backward and downward; when the jump button 10 pushes the lock catch 12 to move a certain distance, the sharp angle of the jump button 10 is buckled with the groove below the lock catch 12, the tail of the rebuckles 13 is buckled with the traction rod 14, and the lock catch 12 and the rebuckles 13 are also firmly propped together, so that the mechanism is in a clamping state;
When a circuit needs to be connected, the operating handle 5 rotates downwards to drive the lever 6 to rotate forwards on the clamping plate 7, the trip button 10 cannot rotate in a locking state at the moment, the trip button 10 is riveted with the upper connecting rod 9, the upper connecting rod 9 and the lower connecting rod 17 penetrate through a shaft, so that the upper connecting rod 9 rotates forwards to drive the lower connecting rod 17 to rotate forwards, the lower connecting rod 17 is fixed on a rotating shaft, the lower connecting rod 17 drives the rotating shaft 18 to rotate forwards, and the rotating shaft 18 drives the moving contact 15 to rotate forwards and downwards until the moving contact 15 is tightly contacted with the fixed contact 405, and the circuit breaker is in a closing state at the moment.
When overload or short circuit occurs on the load side of the circuit breaker, the traction rod 14 rotates forwards to a certain angle, the tail of the rebuckles 13 is unlocked with the traction rod 14, the lock catches 12 and the jump buckles 10 are unlocked, the jump buckles 10 after unlocking are reset, and the movable contact 15 is driven to rotate upwards and backwards through the upper connecting rod 9, the lower connecting rod 17 and the rotating shaft 18, so that tripping of the circuit breaker is realized.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. are based on directions or positional relationships shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience in describing the simplified description of the present invention patent, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention patent.
Claims (7)
1. The circuit breaker with the double arc-extinguishing chambers is characterized by comprising a bottom cover (1), wherein an arc-extinguishing chamber (4) is arranged in the bottom cover (1), and the arc-extinguishing chamber (4) comprises an arc-extinguishing side plate A (401), an arc-extinguishing chamber grid plate A (402) and an arc-extinguishing chamber (407); the arc-extinguishing chamber grid sheet A (402) is concave, the concave bottom surface is an inclined surface, and a plurality of concave cambered surfaces are arranged at the bottom of the arc-extinguishing chamber grid sheet A (402); the arc-extinguishing chamber grid plates A (402) are arranged between the two arc-extinguishing side plates A (401), the arc-extinguishing chamber grid plates A (402) are vertically arranged, gaps with equal distances are reserved between every two arc-extinguishing chamber grid plates A (402), and the adjacent two arc-extinguishing chamber grid plates A (402) are oppositely placed, so that the inner side chute is in a crossed shape, and the grooves outside the inner side chute are in an aligned state; an arc extinguishing cover (407) is arranged at a position on the inner side of the arc extinguishing side plate A (401) and in front; the arc-extinguishing side plate A (401), the arc-extinguishing chamber grid plate A (402) and the arc-extinguishing chamber (407) form a first arc-extinguishing chamber for arc extinction;
The arc extinguishing chamber (4) further comprises an arc extinguishing side plate B (406) and an arc extinguishing chamber grid plate B (403); a plurality of arc extinguishing chamber grid plates B (403) are arranged between two arc extinguishing side plates B (406); the arc-extinguishing side plate B (406) is positioned at the rear side of the arc-extinguishing side plate A (401); the arc-extinguishing chamber grid sheet B (403) is rectangular, a plurality of convex cambered surfaces are arranged at the top, and a plurality of arc-extinguishing chamber grid sheets B (403) are arranged between two arc-extinguishing side plates B (406); the arc-extinguishing chamber grid plates B (403) are vertically arranged, and each arc-extinguishing chamber grid plate B (403) is opposite to a gap between two adjacent arc-extinguishing chamber grid plates A (402); the convex cambered surface at the top of the arc-extinguishing chamber grid sheet B (403) is in staggered fit with the concave cambered surface at the bottom of the arc-extinguishing chamber grid sheet A (402) in space; the arc-extinguishing side plate B (406) and the arc-extinguishing chamber grid plate B (403) form a second arc-extinguishing chamber.
2. The circuit breaker with dual arc chute of claim 1 further comprising: a stationary cover (404) and a stationary contact (405);
the static contact (405) is installed at the rear end of the static cover (404), the static cover (404) and the static contact (405) are combined into a Z shape, and the static cover (404) and the static contact (405) are installed below the two arc extinguishing side plates A (401).
3. The circuit breaker with double arc extinguishing chambers according to claim 2, characterized in that the stationary cover (404) is provided with a fixed block (4041), the fixed block (4041) is provided with a chute, a shielding plate (4042) is slidably arranged in the chute of the fixed block (4041), a spring is arranged on the shielding plate (4042), the other end of the spring is fixedly arranged in the fixed block (4041), and the spring generates elastic force to enable the two shielding plates (4042) to move towards each other, so that the two shielding plates (4042) are contacted; a bevel block B (4043) is provided on the shielding plate (4042).
4. The circuit breaker with dual arc chute of claim 1 further comprising: the device comprises a lever (6), a clamping plate (7), a lever spring (8), an upper connecting rod (9), a rebuckling (13), a traction rod (14) and a thermal element mechanism (19);
The two clamping plates (7) are fixedly connected through the connecting shaft (11), the lever (6) is rotatably arranged in a semicircular groove of the clamping plates (7), and the handle (5) is fixedly arranged on the lever (6); the upper connecting rod (9) and the lower connecting rod (17) are fixedly connected through a shaft; one end of the lever spring (8) is arranged on the shaft of the lower connecting rod (17), and the other end of the lever spring is arranged on the lever (6); the traction rod (14) is rotatably arranged on the inner side of the bottom cover (1).
5. The circuit breaker with double arc-extinguishing chambers according to claim 4, characterized in that a clamping groove and a pushing plate are arranged on the traction rod (14), the clamping groove can be clamped with a clamping plate at the tail end of the rebuckling (13), and the rebuckling (13) is rotatably arranged on the shaft of the clamping plate (7); the pushing plate arranged on the traction rod (14) is contacted with the pushing rod of the thermal element mechanism (19), and the thermal element mechanism (19) is arranged in the bottom cover (1).
6. A circuit breaker with dual arc extinguishing chambers according to any of claims 2-5, characterized in that it further comprises a moving contact (15), one end of the moving contact (15) is fixedly mounted on a rotating shaft (18), and a bevel block a (16) is arranged on the other end of the moving contact (15).
7. The circuit breaker with dual arc chute of claim 6 wherein said stationary contact (405) is PA46 high temperature resistant flame retardant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311285254.8A CN117497382B (en) | 2023-09-28 | 2023-09-28 | Circuit breaker with double arc-extinguishing chambers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311285254.8A CN117497382B (en) | 2023-09-28 | 2023-09-28 | Circuit breaker with double arc-extinguishing chambers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117497382A CN117497382A (en) | 2024-02-02 |
| CN117497382B true CN117497382B (en) | 2024-06-04 |
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| CN202311285254.8A Active CN117497382B (en) | 2023-09-28 | 2023-09-28 | Circuit breaker with double arc-extinguishing chambers |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198165A1 (en) * | 2016-05-17 | 2017-11-23 | 浙江人民电器有限公司 | Direct-current circuit breaker |
| CN107452572A (en) * | 2017-08-15 | 2017-12-08 | 国网江苏省电力公司南京供电公司 | Arc Distinguishing Device for Circuit Breakers |
| CN113972118A (en) * | 2020-07-24 | 2022-01-25 | 上海正泰智能科技有限公司 | Arc extinguishing chamber and switching device |
| WO2022134743A1 (en) * | 2020-12-21 | 2022-06-30 | 天津首瑞智能电气有限公司 | Switch |
| CN217521937U (en) * | 2022-06-20 | 2022-09-30 | 诚硕电气有限公司 | Circuit breaker |
| CN115799014A (en) * | 2022-12-22 | 2023-03-14 | 德力西电气有限公司 | Multi-chamber arc extinguishing device and circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762041B (en) * | 2016-05-17 | 2017-09-12 | 浙江人民电器有限公司 | A kind of dc circuit breaker arc extinguishing structure |
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- 2023-09-28 CN CN202311285254.8A patent/CN117497382B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017198165A1 (en) * | 2016-05-17 | 2017-11-23 | 浙江人民电器有限公司 | Direct-current circuit breaker |
| CN107452572A (en) * | 2017-08-15 | 2017-12-08 | 国网江苏省电力公司南京供电公司 | Arc Distinguishing Device for Circuit Breakers |
| CN113972118A (en) * | 2020-07-24 | 2022-01-25 | 上海正泰智能科技有限公司 | Arc extinguishing chamber and switching device |
| WO2022134743A1 (en) * | 2020-12-21 | 2022-06-30 | 天津首瑞智能电气有限公司 | Switch |
| CN217521937U (en) * | 2022-06-20 | 2022-09-30 | 诚硕电气有限公司 | Circuit breaker |
| CN115799014A (en) * | 2022-12-22 | 2023-03-14 | 德力西电气有限公司 | Multi-chamber arc extinguishing device and circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN117497382A (en) | 2024-02-02 |
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