CN117524785A - Arc extinguishing chamber and circuit breaker with same - Google Patents
Arc extinguishing chamber and circuit breaker with same Download PDFInfo
- Publication number
- CN117524785A CN117524785A CN202311424754.5A CN202311424754A CN117524785A CN 117524785 A CN117524785 A CN 117524785A CN 202311424754 A CN202311424754 A CN 202311424754A CN 117524785 A CN117524785 A CN 117524785A
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- contact
- cylinder structure
- transmission
- moving contact
- pull rod
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- 230000005540 biological transmission Effects 0.000 claims abstract description 77
- 230000009471 action Effects 0.000 claims abstract description 7
- 230000033001 locomotion Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims 1
- 238000010891 electric arc Methods 0.000 abstract description 16
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
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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
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention provides an arc extinguishing chamber and a circuit breaker with the same, wherein the arc extinguishing chamber comprises a cylinder structure, and the cylinder structure is provided with an air chamber; the first contact assembly comprises a first fixed contact and a first movable contact which are matched with each other; the pull rod, the first moving contact and the cylinder structure move under the drive of the pull rod; the second contact assembly comprises a second fixed contact and a second movable contact which are matched with each other, the second fixed contact is arranged on one side of the first movable contact, which is far away from the first fixed contact, the second movable contact is arranged on one side of the second fixed contact, which is far away from the first movable contact, and the second fixed contact is connected with the first movable contact; and the transmission part at least partially stretches into the air chamber and is in transmission connection with the second movable contact so as to drive the second movable contact to move along the direction far away from or close to the second fixed contact, and when the second contact assembly performs the opening action, the generated electric arc heats air in the air chamber, so that the pressure in the air chamber is increased. The invention solves the problem of poor switching reliability of the switching device of the circuit breaker in the prior art.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to an arc extinguishing chamber and a circuit breaker with the same.
Background
The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinction are high vacuum, has the advantages of small volume, light weight, suitability for frequent operation and no maintenance for arc extinction, and is more popular in power distribution networks.
In the use process of the vacuum circuit breaker, an electric arc is easy to generate between a moving contact and a fixed contact, particularly when a large current is cut off, the generated electric arc has large energy, and an electric arc blocking effect is easy to generate at the throat part of an arc extinguishing nozzle, at the moment, the pressure in a cylinder is not high enough, and then the electric arc at the throat part of the arc extinguishing nozzle is not easy to be extinguished, so that the problems of low breaking speed of the moving contact and poor reliability of the cut-off between the fixed contact and the moving contact are caused.
Disclosure of Invention
The invention mainly aims to provide an arc extinguishing chamber and a circuit breaker with the same, so as to solve the problem of poor switching reliability of a switching device of the circuit breaker in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided an arc extinguishing chamber including a cylinder structure having an air chamber; the first contact assembly comprises a first fixed contact and a first movable contact which are matched with each other; the pull rod, the first moving contact and the cylinder structure move under the drive of the pull rod; the arc extinguishing chamber further comprises: the second contact assembly comprises a second fixed contact and a second moving contact which are matched with each other, the second fixed contact is arranged on one side of the first moving contact, which is far away from the first fixed contact, the second moving contact is arranged on one side of the second fixed contact, which is far away from the first moving contact, and the second fixed contact is connected with the first moving contact; and at least part of the transmission part stretches into the air chamber and is in transmission connection with the second movable contact to drive the second movable contact to move along the direction away from or close to the second fixed contact, so that when the second contact assembly performs the opening action, the generated electric arc heats air in the air chamber to increase the pressure in the air chamber.
Further, the cylinder structure further includes a piston member having a cavity portion, and a cylinder member movably disposed within the cavity portion; the piston component comprises a blocking part positioned in the cavity body, and the pull rod is arranged on the blocking part in a penetrating mode.
Further, the piston member further includes: the connecting part is provided with an accommodating space, and at least part of the pull rod is positioned in the accommodating space; the stop part is arranged opposite to the plugging part and is positioned at the outer side of the cylinder part, the minimum cross-sectional area of the stop part is larger than the maximum cross-sectional area of the cylinder part, the other end of the connecting part is connected with the stop part, and the pull rod is arranged on the stop part in a penetrating way.
Further, the first moving contact is fixedly connected with the cylinder structure, so that the first moving contact and the second fixed contact are driven to move through movement of the cylinder structure.
Further, the pull rod is arranged on the cylinder structure in a penetrating way and fixedly connected with the cylinder structure, and the pull rod is movably arranged to pull the cylinder structure to move; the pull rod is provided with a guide rod section positioned in the air chamber, and the second moving contact is in sliding fit with the guide rod section so that the second moving contact can be movably arranged on the guide rod section in the process of opening the second moving contact.
Further, the first moving contact is fixedly connected with the cylinder structure, and the first moving contact and the second fixed contact both move along with the cylinder structure; the transmission part is hinged with the support foundation positioned on the outer side of the cylinder structure, and the cylinder structure is in transmission connection with the transmission part so as to drive the transmission part to rotate around a hinge point with the support foundation.
Further, the transmission part is a transmission rod, one end of the transmission rod is hinged with the supporting foundation, and the other end of the transmission rod is connected with the second movable contact; the cylinder structure is provided with a penetrating hole for the transmission rod to pass through.
Further, the transmission part is in sliding connection with the second movable contact; or the transmission component is a telescopic rod.
Further, the second fixed contact and the first moving contact are of an integrated structure; and/or the arc extinguishing chamber comprises a first driving part which is in driving connection with the pull rod so as to drive the pull rod to drive the cylinder structure, the first moving contact and the second fixed contact to move; and/or the arc extinguishing chamber comprises a second driving part which is in driving connection with the transmission part so as to drive the transmission part to drive the second moving contact to move.
According to another aspect of the present invention, there is provided a circuit breaker including: the arc extinguishing chamber; the shell, the explosion chamber sets up in the shell.
By applying the technical scheme of the invention, the invention provides an arc extinguishing chamber, which comprises a cylinder structure, wherein the cylinder structure is provided with an air chamber; the first contact assembly comprises a first fixed contact and a first movable contact which are matched with each other; the pull rod, the first moving contact and the cylinder structure move under the drive of the pull rod; the arc extinguishing chamber further comprises: the second contact assembly comprises a second fixed contact and a second movable contact which are matched with each other, the second fixed contact is arranged on one side, far away from the first fixed contact, of the first movable contact, the second movable contact is arranged on one side, far away from the first movable contact, of the second fixed contact, the second fixed contact is connected with the first movable contact, through the arrangement, the first contact assembly and the second contact assembly are sequentially connected in series, and when the first movable contact moves, the first fixed contact also moves along with the first movable contact, so that mutual collision and interference between the first movable contact and the second fixed contact can be prevented, and the reliability of the movement of the first movable contact is improved; the arc extinguishing chamber also comprises a transmission part, at least part of the transmission part stretches into the air chamber and is in transmission connection with the second moving contact so as to drive the second moving contact to move along the direction away from or close to the second fixed contact, and when the second contact component performs a switching-off action, the generated electric arc heats air in the air chamber so as to increase the pressure in the air chamber. Like this, the atmospheric pressure in the air chamber rises, and the arc of the first contact subassembly department of being convenient for and the extinction of the arc of second contact subassembly department to, this application is through setting up two contact subassemblies, and voltage is born jointly to two contact subassemblies, like this, the arc of two contact subassemblies departments more blows off easily, thereby has promoted the reliability of opening of first contact subassembly and second contact subassembly.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a schematic view of the structure of an embodiment of an arc chute according to the invention in which both the first contact assembly and the second contact assembly are in a closed state;
fig. 2 shows a schematic view of the structure of the first contact assembly and the second contact assembly of an embodiment of the arc chute according to the invention, both in the process of opening the switch;
fig. 3 shows a schematic structural view of the first contact assembly and the second contact assembly of an embodiment of the arc chute according to the invention, both in a fully opened state.
Wherein the above figures include the following reference numerals:
1. a cylinder structure; 100. a spout; 101. a gas chamber; 2. a first contact assembly; 21. a first stationary contact; 22. a first moving contact; 3. a second contact assembly; 31. a second stationary contact; 32. a second moving contact; 4. a piston member; 40. a blocking part; 41. a connection part; 42. a stop portion; 5. a pull rod; 50. a guide rod section; 6. a transmission member; 7. an arc; 8. a cylinder part.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 3, the present invention provides an arc extinguishing chamber, which comprises a cylinder structure 1, wherein the cylinder structure 1 is provided with an air chamber 101; the first contact assembly 2, the first contact assembly 2 includes a first fixed contact 21 and a first movable contact 22 which are matched with each other; the pull rod 5, the first movable contact 22 and the cylinder structure 1 move under the drive of the pull rod 5; the arc extinguishing chamber further comprises: the second contact assembly 3, the second contact assembly 3 includes the second fixed contact 31 and second movable contact 32 cooperating with each other, the second fixed contact 31 is set up in the side that the first movable contact 22 is far away from the first fixed contact 21, the second movable contact 32 is set up in the side that the second fixed contact 31 is far away from the first movable contact 22, the second fixed contact 31 is connected with first movable contact 22, through the above-mentioned arrangement, the first contact assembly and second contact assembly are connected in series sequentially, through setting up the second fixed contact 31 on the first movable contact 22, when the first movable contact 22 moves, the first fixed contact 21 will move along with the first movable contact 22 too, in this way, can prevent the mutual collision, interference between first movable contact 22 and second fixed contact 31, thus promote the reliability of the first movable contact movement; the arc extinguishing chamber further comprises a transmission part 6, at least part of the transmission part 6 stretches into the air chamber 101 and is in transmission connection with the second movable contact 32 so as to drive the second movable contact 32 to move in a direction away from or close to the second fixed contact 31, and when the second contact assembly 3 performs a switching-off action, the generated electric arc heats air in the air chamber 101, so that the pressure in the air chamber 101 is increased. Thus, the air pressure in the air chamber 101 is increased, so that the electric arc at the first contact assembly 2 and the electric arc at the second contact assembly 3 are convenient to extinguish, and the two contact assemblies bear voltage jointly, so that the electric arcs at the two contact assemblies are easier to blow out, and the reliability of the opening and closing of the first contact assembly 2 and the second contact assembly 3 is improved.
In the present application, the cylinder structure 1 comprises a piston member 4 and a cylinder member 8, the cylinder member 8 has a cavity portion, the piston member 4 is movably arranged in the cavity portion, wherein the piston member 4 comprises a blocking portion 40 positioned in the cavity portion, a pull rod 5 is arranged on the blocking portion 40 in a penetrating manner, and the piston member 4 and the cylinder structure 1 relatively move so as to blow out an arc at the first contact assembly 2 and an arc at the second contact assembly 3 through the movement of the piston member 4 towards the second contact assembly 3 when the first contact assembly 2 and the second contact assembly 3 perform a breaking action. According to the switching-off device, the piston component 4 is arranged, the piston component 4 moves towards the direction close to the second contact component 3, in the switching-off process, the air pressure in the air chamber is further increased along with the movement of the piston component 4 and the electric arc generated at the second contact component, so that the electric arc 7 at the first contact component and the electric arc 7 at the second contact component can be blown off rapidly, and the switching-off capability of the contact component is greatly improved.
Specifically, the piston member 4 and the cavity portion of the cylinder member enclose a gas chamber 101, and the piston member 4 is located on the side of the second contact assembly 3 remote from the first contact assembly 2.
Specifically, the piston member 4 further includes: the connecting part 41, one end of the connecting part 41 is connected with the plugging part 40, the connecting part 41 is provided with an accommodating space, and at least part of the pull rod 5 is positioned in the accommodating space; the stop part 42, the stop part 42 is opposite to the plugging part 40 and is located outside the cylinder part 8, the minimum cross-sectional area of the stop part 42 is larger than the maximum cross-sectional area of the cylinder part 8, the other end of the connecting part 41 is connected with the stop part 42, and the pull rod 5 is arranged on the stop part 42 in a penetrating way. Through the above arrangement, the stop portion 42 can be in limit fit with the cylinder to prevent the piston member 4 from completely entering the cylinder member 8, and the piston member can be conveniently operated by providing the stop portion 42, or the connection between the piston member and the driving member of the piston member can be facilitated.
Alternatively, the connecting portion 41 is a link or a link plate; and/or the connecting parts 41 are a plurality of, and the connecting parts 41 are arranged at intervals around the pull rod; and/or, the stopper 42 and the blocking portion 40 are each plate-like structures.
In order to realize the movement of the first moving contact 22, the first moving contact 22 is fixedly connected with the cylinder structure 1, and the cylinder structure 1 is movably arranged so as to drive the first moving contact 22 to move through the movement of the cylinder structure 1.
In the application, the pull rod 5 is arranged on the cylinder structure 1 in a penetrating way and is fixedly connected with the cylinder structure 1, and the pull rod 5 is movably arranged to pull the cylinder structure 1 to move; the pull rod 5 is provided with a guide rod section 50 positioned in the air chamber 101, and the second moving contact 32 is in sliding fit with the guide rod section 50, so that the second moving contact 32 is movably arranged on the guide rod section 50 in the process of opening the second moving contact 32, the movement direction of the second moving contact 32 is limited, and the movement reliability of the second moving contact 32 is improved.
In order to realize the movement of the first moving contact 22 and the second moving contact 32, the cylinder structure 1 is movably arranged, the first moving contact 22 is fixedly connected with the cylinder structure 1, and the first moving contact 22 and the second fixed contact 31 both move along with the cylinder structure 1; the transmission part 6 is hinged with a supporting foundation positioned on the outer side of the cylinder structure 1, and the cylinder structure 1 is in transmission connection with the transmission part 6 so as to drive the transmission part 6 to rotate around a hinge point with the supporting foundation. Through the arrangement, the transmission part 6 is in transmission connection with the cylinder structure 1, when the cylinder structure 1 drives the first moving contact 22 to move, the transmission part 6 can drive the second moving contact 32 to move, so that the first moving contact and the second moving contact can move simultaneously, and the transmission part 6 is hinged with the support foundation on the outer side of the cylinder structure, so that the linear speed of the connection part of the transmission part and the second moving contact is greater than that of the connection part of the transmission part and the cylinder structure, so that the movement speed of the second moving contact is greater than that of the first moving contact, interference between the first contact assembly and the second contact assembly can be prevented, and the reliability of the disconnection is further improved.
In order to realize the transmission connection of the second movable contact and the cylinder structure, the transmission part 6 is a transmission rod, one end of the transmission rod is hinged with the supporting foundation, and the other end of the transmission rod is connected with the second movable contact 32; the cylinder structure 1 is provided with a penetrating hole for the transmission rod to pass through.
The transmission rod is hinged with the penetrating hole, so that the cylinder drives the transmission rod to move, and the transmission rod can rotate relative to the cylinder structure. The explosion chamber still includes first fixed pin, and first fixed pin wears to establish on cylinder wall and the transfer line of cylinder structure, and the transfer line rotationally sets up around the axis of first fixed pin.
The arc extinguishing chamber in the present application further comprises a second fixing pin, which is arranged in a penetrating manner on the transmission rod and the second moving contact 32, the transmission rod being rotatably arranged around the axis of the second fixing pin.
In this application, the second moving contact is sleeve form/annular structure, in the brake separating process, second moving contact 32 cover is established on the guide bar section 50 of pull rod 5, transmission part 6 is connected with one side that the central axis of pull rod was kept away from to second moving contact 32, and transmission part 6 be close to the one side that the axis of pull rod was kept away from to the one end of pull rod 5 that is located the inner wall of second moving contact 32, or, transmission part 6 be close to the one end of pull rod 5 and the inner wall parallel and level of second moving contact 32, like this, can prevent that transmission part and pull rod 5 from taking place to interfere, promote the reliability of second moving contact 32 motion.
Because the motion track of the second moving contact 32 is an arc track when the transmission rod rotates around the support foundation, in order to ensure that the motion track of the second moving contact 32 is linear, the second moving contact 32 cannot influence the second fixed contact in the brake separating process, and optionally, in the application, the transmission part 6 is in sliding connection with the second moving contact 32; or the transmission member 6 is a telescopic rod.
In the implementation process of the present application, the closing state is shown in fig. 1, and the first fixed contact 21 is connected with the first moving contact 22; the second stationary contact 31 is connected to the second movable contact 32.
In the brake separating process, as shown in fig. 2, the pull rod 5 moves rightwards to drive the first movable contact 22 and the cylinder structure 1 to move rightwards; the first fixed pin on the air cylinder moves rightwards to drive the transmission rod to rotate anticlockwise, the second fixed pin drives the second moving contact 32 to move rightwards, and the moving speed of the second moving contact 32 is greater than that of the pull rod; an arc 7 appears between the first fixed contact 21 and the first moving contact; the second stationary contact 31 and the second moving contact 32 are arc 7.
In the embodiment of the application, the second fixed contact 31 and the first movable contact 22 are of an integrated structure, so that the first movable contact 22 and the second fixed contact 31 are convenient to manufacture; and/or, the arc extinguishing chamber comprises a first driving part, and the first driving part is in driving connection with the pull rod 5 so as to drive the pull rod 5 to drive the cylinder structure 1, the first moving contact 22 and the second fixed contact 31 to move, thus realizing the automatic movement of the pull rod; and/or the arc extinguishing chamber comprises a second driving part which is in driving connection with the transmission part 6 to drive the second moving contact 32 to move, so that the automatic movement of the transmission part 6 is realized.
Alternatively, the present application may only provide the first driving part, and the movement of the pull rod 5 drives the movement of the cylinder structure 1, the first moving contact 22, the second fixed contact 31 and the transmission part 6, so that the transmission part 6 drives the second moving contact 32 to move.
Optionally, the first driving component is a piston cylinder, and the piston cylinder can be a hydraulic cylinder or a cylinder or an electric push rod; and/or the second driving member may be a motor drivingly connected to the end of the transmission member 6 remote from the cylinder to drive the transmission member 6 in a swinging motion relative to the support base.
The invention also provides a circuit breaker, comprising: the arc extinguishing chamber; the shell, the explosion chamber sets up in the shell. The transmission member 6 is hinged to a support base, which may be a housing.
In summary, the breaking speed of the circuit breaker can be improved by means of the arc energy generated by the second contact assembly 3 in the breaking process, the breaking capacity of the circuit breaker is improved, and in the breaking process, the arc 7 at the second contact assembly 3 heats the gas in the gas chamber 101, on one hand, the gas in the gas chamber 101 is compressed by the piston component 4, the pressure is improved, on the other hand, the arc 7 at the second contact assembly 3 heats the gas in the gas chamber 101, the pressure is further improved, so that the gas in the gas chamber 101 blows out the arc 7 at the first contact assembly 2 more strongly through the nozzle 100, and the first contact assembly and the second contact assembly bear pressure due to two fractures, and the arc is blown out more easily.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
the invention provides an arc extinguishing chamber, which comprises a cylinder structure 1, wherein the cylinder structure 1 is provided with an air chamber 101; the first contact assembly 2, the first contact assembly 2 includes a first fixed contact 21 and a first movable contact 22 which are matched with each other; the pull rod 5, the first movable contact 22 and the cylinder structure 1 move under the drive of the pull rod 5; the arc extinguishing chamber further comprises: the second contact assembly 3, the second contact assembly 3 includes the second fixed contact 31 and second movable contact 32 cooperating with each other, the second fixed contact 31 is set up in the side that the first movable contact 22 is far away from the first fixed contact 21, the second movable contact 32 is set up in the side that the second fixed contact 31 is far away from the first movable contact 22, the second fixed contact 31 is connected with first movable contact 22, through the above-mentioned arrangement, the first contact assembly and second contact assembly are connected in series sequentially, through setting up the second fixed contact 31 on the first movable contact 22, when the first movable contact 22 moves, the first fixed contact 21 will move along with the first movable contact 22 too, in this way, can prevent the mutual collision, interference between first movable contact 22 and second fixed contact 31, thus promote the reliability of the first movable contact movement; the arc extinguishing chamber further comprises a transmission part 6, at least part of the transmission part 6 stretches into the air chamber 101 and is in transmission connection with the second movable contact 32 so as to drive the second movable contact 32 to move in a direction away from or close to the second fixed contact 31, and when the second contact assembly 3 performs a switching-off action, the generated electric arc heats air in the air chamber 101, so that the pressure in the air chamber 101 is increased. Thus, the air pressure in the air chamber 101 is increased, so that the electric arc at the first contact assembly 2 and the electric arc at the second contact assembly 3 are convenient to extinguish, and the two contact assemblies bear voltage jointly, so that the electric arcs at the two contact assemblies are easier to blow out, and the reliability of the opening and closing of the first contact assembly 2 and the second contact assembly 3 is improved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An arc extinguishing chamber comprising a cylinder structure (1), the cylinder structure (1) having an air chamber (101); the first contact assembly (2), the first contact assembly (2) comprises a first fixed contact (21) and a first movable contact (22) which are matched with each other; the first moving contact (22) and the cylinder structure (1) move under the drive of the pull rod (5); the arc extinguishing chamber is characterized by further comprising:
the second contact assembly (3), the second contact assembly (3) comprises a second fixed contact (31) and a second movable contact (32) which are matched with each other, the second fixed contact (31) is arranged on one side of the first movable contact (22) far away from the first fixed contact (21), the second movable contact (32) is arranged on one side of the second fixed contact (31) far away from the first movable contact (22), and the second fixed contact (31) is connected with the first movable contact (22);
the transmission component (6), at least part of the transmission component (6) stretches into the air chamber (101) and is in transmission connection with the second moving contact (32), so that the second moving contact (32) is driven to move along a direction away from or close to the second fixed contact (31), and when the second contact component (3) performs a brake separating action, generated electric arcs heat air in the air chamber (101) to enable pressure in the air chamber (101) to rise.
2. The arc chute of claim 1 wherein said cylinder structure (1) further comprises a piston member (4) and a cylinder member (8), said cylinder member (8) having a cavity portion, said piston member (4) being movably disposed within said cavity portion;
the piston component (4) comprises a blocking portion (40) located in the cavity portion, and the pull rod (5) penetrates through the blocking portion (40).
3. The arc chute according to claim 2, wherein the piston member (4) further comprises:
a connecting part (41), wherein one end of the connecting part (41) is connected with the plugging part (40), the connecting part (41) is provided with an accommodating space, and at least part of the pull rod (5) is positioned in the accommodating space;
the stop part (42), the stop part (42) with shutoff portion (40) set up relatively and be located the outside of cylinder part (8), the minimum cross-sectional area of stop part (42) is greater than the maximum cross-sectional area of cylinder part (8), the other end of connecting portion (41) with stop part (42) are connected, pull rod (5) wear to establish on stop part (42).
4. The arc extinguishing chamber according to claim 1, characterized in that the first moving contact (22) is fixedly connected with the cylinder structure (1) so as to drive the first moving contact (22) and the second stationary contact (31) to move by the movement of the cylinder structure (1).
5. The arc chute as in claim 4 wherein,
the pull rod (5) is arranged on the air cylinder structure (1) in a penetrating way and is fixedly connected with the air cylinder structure (1), and the pull rod (5) is movably arranged to pull the air cylinder structure (1) to move;
the pull rod (5) is provided with a guide rod section (50) positioned in the air chamber (101), and the second moving contact (32) is in sliding fit with the guide rod section (50) so that the second moving contact (32) is movably arranged on the guide rod section (50) in the process of separating the second moving contact (32).
6. The arc chute as claimed in claim 1, wherein,
the first moving contact (22) is fixedly connected with the cylinder structure (1), and the first moving contact (22) and the second fixed contact (31) move along with the cylinder structure (1);
the transmission part (6) is hinged with a supporting foundation positioned on the outer side of the air cylinder structure (1), and the air cylinder structure (1) is in transmission connection with the transmission part (6) so as to drive the transmission part (6) to rotate around a hinge point with the supporting foundation.
7. The arc extinguishing chamber according to claim 6, characterized in that the transmission member (6) is a transmission rod, one end of which is hinged to the supporting base, the other end of which is connected to the second moving contact (32); the cylinder structure (1) is provided with a penetrating hole for the transmission rod to pass through.
8. The arc chute as in claim 6 wherein,
the transmission part (6) is in sliding connection with the second movable contact (32); or alternatively
The transmission part (6) is a telescopic rod.
9. The arc chute as claimed in any one of claims 1 to 8, wherein said second stationary contact (31) and said first moving contact (22) are of unitary construction; and/or the number of the groups of groups,
the arc extinguishing chamber comprises a first driving part which is in driving connection with the pull rod (5) so as to drive the pull rod (5) to drive the cylinder structure (1), the first moving contact (22) and the second fixed contact (31) to move; and/or the number of the groups of groups,
the arc extinguishing chamber comprises a second driving part which is in driving connection with the transmission part (6) so as to drive the transmission part (6) to drive the second moving contact (32) to move.
10. A circuit breaker, comprising:
the arc chute of any one of claims 1 to 9;
and the arc extinguishing chamber is arranged in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311424754.5A CN117524785A (en) | 2023-10-30 | 2023-10-30 | Arc extinguishing chamber and circuit breaker with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311424754.5A CN117524785A (en) | 2023-10-30 | 2023-10-30 | Arc extinguishing chamber and circuit breaker with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117524785A true CN117524785A (en) | 2024-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311424754.5A Pending CN117524785A (en) | 2023-10-30 | 2023-10-30 | Arc extinguishing chamber and circuit breaker with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117524785A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885466A (en) * | 2006-06-12 | 2006-12-27 | 宁波天安（集团）股份有限公司 | Switch device of parallel connection vacuum arc extinguishing chamber |
| CN103325615A (en) * | 2013-06-04 | 2013-09-25 | 张敬敏 | Breaker compressed-air type arc extinguish chamber |
| CN208908200U (en) * | 2018-09-29 | 2019-05-28 | 莱福士电力电子设备（深圳）有限公司 | High-voltage switch gear arc-control device |
| CN114899059A (en) * | 2022-05-11 | 2022-08-12 | 正泰电气股份有限公司 | Breaking device, circuit breaker and electrical equipment |
| WO2023044880A1 (en) * | 2021-09-26 | 2023-03-30 | 西门子股份公司 | Circuit breaker, circuit breaker overtravel adjustment method and power system |
| CN116153735A (en) * | 2023-03-08 | 2023-05-23 | 西安西电开关电气有限公司 | Double-acting compressed air type arc extinguishing chamber structure and opening and closing method thereof |
| WO2023166400A1 (en) * | 2022-03-02 | 2023-09-07 | 西门子能源全球股份两合公司 | Isolating switch |
-
2023
- 2023-10-30 CN CN202311424754.5A patent/CN117524785A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885466A (en) * | 2006-06-12 | 2006-12-27 | 宁波天安（集团）股份有限公司 | Switch device of parallel connection vacuum arc extinguishing chamber |
| CN103325615A (en) * | 2013-06-04 | 2013-09-25 | 张敬敏 | Breaker compressed-air type arc extinguish chamber |
| CN208908200U (en) * | 2018-09-29 | 2019-05-28 | 莱福士电力电子设备（深圳）有限公司 | High-voltage switch gear arc-control device |
| WO2023044880A1 (en) * | 2021-09-26 | 2023-03-30 | 西门子股份公司 | Circuit breaker, circuit breaker overtravel adjustment method and power system |
| WO2023166400A1 (en) * | 2022-03-02 | 2023-09-07 | 西门子能源全球股份两合公司 | Isolating switch |
| CN114899059A (en) * | 2022-05-11 | 2022-08-12 | 正泰电气股份有限公司 | Breaking device, circuit breaker and electrical equipment |
| CN116153735A (en) * | 2023-03-08 | 2023-05-23 | 西安西电开关电气有限公司 | Double-acting compressed air type arc extinguishing chamber structure and opening and closing method thereof |
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