CN114121545A - Circuit breaker with direct-acting double-isolating switch transmission device - Google Patents
Circuit breaker with direct-acting double-isolating switch transmission device Download PDFInfo
- Publication number
- CN114121545A CN114121545A CN202111259166.1A CN202111259166A CN114121545A CN 114121545 A CN114121545 A CN 114121545A CN 202111259166 A CN202111259166 A CN 202111259166A CN 114121545 A CN114121545 A CN 114121545A
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- China
- Prior art keywords
- circuit breaker
- isolation
- double
- main shaft
- isolating
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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
- H01H33/02—Details
- H01H33/42—Driving mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/04—Levers
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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
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a circuit breaker comprising a direct-acting double-isolating switch transmission device, which comprises a rack, double isolating switches, a circuit breaker main shaft and a vacuum circuit breaker, wherein each double isolating switch comprises three groups of isolating conductive assemblies, and each group of isolating conductive assemblies comprises two lead screws, two isolating conductive cylinders and a turbine; an isolated shaft; three worm rods which are in one-to-one butt joint fit with the worm wheels are arranged on the isolation rotating shaft, the worm wheel structure of the worm rods drives the two screw rods to rotate, and finally the two isolation conductive cylinders are driven to do vertical anisotropic linear motion to be connected or disconnected with an external circuit, so that the opening and closing of the double isolation switches are realized; the vacuum circuit breaker comprises a pole and a vacuum arc extinguish chamber, the static end of the vacuum arc extinguish chamber is electrically connected with the two isolating conductive cylinders respectively, the moving end of the vacuum arc extinguish chamber is in driving connection with the main shaft of the circuit breaker through a transmission assembly, and the main shaft of the circuit breaker rotates to drive the moving end of the vacuum arc extinguish chamber to move through the transmission of the transmission assembly, so that the vacuum arc extinguish chamber is opened and closed. The invention has more compact and small integral structure and is convenient to assemble.
Description
Technical Field
The invention relates to the technical field of double-isolating switch transmission devices, in particular to a circuit breaker comprising a direct-acting double-isolating switch transmission device.
Background
The double-isolation switch in the circuit breaker in the prior art is generally an isolation switch, one end of the isolation switch is fixed on the static end of a vacuum arc extinguish chamber, and the other end of the isolation switch drives the isolation switch to be inserted in a rotating mode through a connecting rod, so that the switching-on and switching-off processes of the double-isolation switch are realized.
Disclosure of Invention
The invention aims to provide a circuit breaker with a direct-acting double-isolating switch transmission device, which solves the problems that the traditional double-isolating switch transmission device has larger occupied space, larger internal parts, complex structure, inconvenient assembly and operation and the like.
In order to achieve the purpose, the technical scheme of the invention is as follows: a circuit breaker with a direct-acting double-isolating switch transmission device comprises a frame; the double-isolation switch comprises three groups of isolation conductive assemblies longitudinally distributed on the rack, each group of isolation conductive assemblies comprises two screw rods, two isolation conductive cylinders and a turbine, the two isolation conductive cylinders are respectively sleeved outside the two screw rods, the two screw rods are connected through the turbine, and the thread turning directions of the two screw rods are opposite; the isolation rotating shaft is arranged on the rack; the three scroll bars are jointly arranged on the isolation rotating shaft and rotate along with the rotation of the isolation rotating shaft, the scroll bars and the turbines are in butt joint and matched one by one, the scroll bars are used for driving the turbines to rotate so as to drive the two screw rods of each group of isolation conductive assemblies to rotate, and finally the two isolation conductive cylinders on the two screw rods are driven to do vertical anisotropic linear motion to be connected or disconnected with an external circuit, so that the opening and closing of the double isolation switches are realized; the vacuum circuit breaker comprises a pole column and a vacuum arc extinguish chamber arranged in the pole column, wherein the static end of the vacuum arc extinguish chamber is electrically connected with the two isolation conductive cylinders respectively, the moving end of the vacuum arc extinguish chamber and the circuit breaker main shaft form driving connection through a transmission assembly, and the circuit breaker main shaft rotates to drive the moving end of the vacuum arc extinguish chamber to move through the transmission of the transmission assembly, so that the vacuum arc extinguish chamber is opened and closed.
Optionally, the screw sleeves connected with the lead screw are respectively fixed at one end of each of the two isolated conductive cylinders close to each other.
Optionally, the two ends of the turbine are riveted and fixed with the two screw rods through pins respectively.
Optionally, the end of each of the two isolated conductive cylinders, which is far away from the external circuit, is provided with a nut for forming a movable electrical connection with the external circuit, and the nuts on the two isolated conductive cylinders are in contact with or separated from the external circuit at the same time.
Optionally, the breaker main shaft with the transmission assembly is connected through a connecting lever, and an energy storage spring is sleeved outside the connecting lever.
Optionally, the transmission assembly comprises an insulating pull rod, a transmission lever and a pull rod, one end of the insulating pull rod is pivoted on the main shaft of the circuit breaker, the other end of the insulating pull rod is connected with one end of the transmission lever, one end of the pull rod is connected with the other end of the transmission lever, and the other end of the pull rod is in driving connection with the movable end of the vacuum arc extinguish chamber.
Optionally, an operating mechanism is further disposed on one side of the rack, and the operating mechanism is used for controlling and driving the isolation rotating shaft or the breaker main shaft to rotate around the axis of the isolation rotating shaft or the breaker main shaft respectively.
The invention has the following beneficial effects:
the isolating conductive cylinder of the double isolating switch is movably connected with an external circuit in an up-and-down linear motion mode so as to realize the switching-on and switching-off process of the double isolating switch, and compared with the mode that the isolating disconnecting link is driven to rotate by a plurality of parts with relatively large volumes such as a main shaft, a connecting rod, a connecting lever and the like so as to realize the switching-on and switching-off of the double isolating switch in the prior art, the technical scheme has the advantages of simple structure, small occupied space and more compact and small overall structure, so that the double isolating switch can be installed in a smaller space, and is convenient to assemble and operate.
Drawings
FIG. 1 is a front side perspective view of an embodiment of the present invention.
FIG. 2 is a rear side perspective view of an embodiment of the present invention.
Fig. 3 is a front view of an embodiment of the present invention.
Fig. 4 is a rear view of an embodiment of the present invention.
Fig. 5 is a cross-sectional view taken at a-a in fig. 3.
The attached drawings are marked as follows: the device comprises a machine frame 1, an isolation rotating shaft 2, a lead screw 3, an isolation conductive cylinder 4, a turbine 5, a scroll bar 6, a threaded sleeve 7, a pin 8, a nut 9, a vacuum circuit breaker 10, a pole 101, a vacuum arc-extinguishing chamber 102, a circuit breaker main shaft 11, a transmission assembly 12, an insulation pull rod 121, a transmission lever 122, a pull rod 123 and an operating mechanism 13.
Detailed Description
To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
Referring to fig. 1 to 5, as an embodiment of the present invention, a circuit breaker including a direct-acting double-disconnector transmission device is provided, which includes a frame 1; the double-isolation switch comprises three groups of isolation conductive components which are longitudinally distributed on the rack 1, each group of isolation conductive components comprises two screw rods 3, two isolation conductive cylinders 4 and a turbine 5, the two isolation conductive cylinders 4 are respectively sleeved outside the two screw rods 3, the two screw rods 3 are connected through the turbine 5, and the thread turning directions of the two screw rods 3 are opposite; an isolation rotating shaft 2 arranged on the frame 1; the three scroll bars 6 are jointly arranged on the isolation rotating shaft 2 and rotate along with the rotation of the isolation rotating shaft 2, the scroll bars 6 are in one-to-one butt joint fit with the turbines 5, the scroll bars 6 are used for driving the turbines 5 to rotate so as to drive the two lead screws 3 of each group of isolation conductive assemblies to rotate, and finally the two isolation conductive cylinders 4 on the two lead screws 3 are driven to do vertical anisotropic linear motion to be connected or disconnected with an external circuit, so that the opening and closing of the double isolation switches are realized; a circuit breaker main shaft 11, the setting is in frame 1, a vacuum circuit breaker 10, the setting is in frame 1, vacuum circuit breaker 10 includes utmost point post 101 and sets up the vacuum interrupter 102 in utmost point post 101, the quiet end of vacuum interrupter 102 respectively with two keep apart conductive tube 4 electrical connection, the end of moving of vacuum interrupter 102 forms the drive with circuit breaker main shaft 11 through a transmission subassembly 12 and is connected, the rotatory end of moving through transmission drive vacuum interrupter 102 of transmission subassembly 12 of circuit breaker main shaft 11 moves, realize opening and close of vacuum interrupter 102.
Above-mentioned technical scheme, it rotates to drive three scroll bar 6 on it through keeping apart 2 forward rotations of pivot, and then drive respectively and keep apart the turbine 5 rotation on the conductive component with each 6 butt joints of scroll bar, thereby drive two lead screws 3 and rotate, make two keep apart the different direction rectilinear motion of conductive cylinder 4 orientation the direction of keeping away from each other on two lead screws 3, until pushing away to with external circuit switch-on, two isolator are in the combined floodgate state this moment, the rotatory transmission that drives transmission assembly 12 of circuit breaker main shaft 11 drives the action of the movable end of vacuum interrupter 102 simultaneously, realize that vacuum interrupter 102 is closed, can realize the combined floodgate power transmission this moment. In a similar way, the isolation rotating shaft 2 rotates reversely to drive the three scroll rods 6 thereon to rotate, the three scroll rods 6 respectively drive the turbines 5 butted with the three scroll rods to rotate, so that the two screw rods 3 are driven to rotate, the two isolation conductive cylinders 4 on the two screw rods 3 move in a linear motion in different directions towards mutually approaching directions, the two isolation conductive cylinders 4 are disconnected with an external circuit, and the double isolation switches are in a switching-off state at the moment. The isolating conductive cylinder 4 of the double isolating switch is movably connected with an external circuit in an up-and-down linear motion mode so as to realize the switching-on and switching-off process of the double isolating switch, and compared with the mode that in the prior art, the isolating disconnecting link is driven to rotate by a plurality of parts with relatively large volumes, such as a main shaft, a connecting rod, a connecting lever and the like so as to realize the switching-on and switching-off of the double isolating switch, the technical scheme has the advantages of simple structure, small occupied space and more compact and exquisite overall structure, so that the double isolating switch can be installed in smaller space and is convenient to assemble and operate.
In this embodiment, the screw sleeves 7 connected with the lead screw 3 are respectively fixed at the ends, close to each other, of the two isolating conductive cylinders 4, and the screw sleeves 7 and the lead screw 3 form a threaded connection to drive the isolating conductive cylinders 4 to move linearly, so that the direct connection between the isolating conductive cylinders 4 and the lead screw 3 is prevented from being worn due to long-time use, and the failure rate and the maintenance cost are reduced.
In this embodiment, the two ends of the turbine 5 are riveted and fixed with the two screw rods 3 through the pins 8, so that the stability and the reliability are higher.
In this embodiment, the nut 9 is disposed at the end of each of the two isolated conductive cylinders 4 away from each other, so as to form a movable electrical connection with the external circuit, and the nuts 9 on the two isolated conductive cylinders 4 are in contact with or separated from the external circuit at the same time, which is safer and more reliable, and the operation efficiency is higher. Of course, in other embodiments, the contacting or separating may not be simultaneous, but the efficiency of the operation may be reduced.
In this embodiment, the circuit breaker spindle 11 and the transmission assembly 12 are connected through a crank arm, and an energy storage spring is sleeved outside the crank arm and used for storing energy and releasing energy, so that the transmission assembly 12 is in driving connection with the moving end of the arc chamber of the vacuum arc-extinguishing chamber 102.
In this embodiment, the transmission assembly 12 includes an insulating pull rod 121, a transmission lever 122, and a pull rod 123, wherein one end of the insulating pull rod 121 is pivotally connected to the breaker spindle 11, the other end of the insulating pull rod is connected to one end of the transmission lever 122, one end of the pull rod 123 is connected to the other end of the transmission lever 122, and the other end of the pull rod 123 forms a driving connection with the moving end of the vacuum interrupter 102.
In this embodiment, an operating mechanism 13 is further disposed on one side of the rack 1, and the operating mechanism 13 is configured to control and drive the isolation rotating shaft 2 or the breaker spindle 11 to rotate around the axis thereof, so as to respectively implement a switching-on and switching-off process of the double isolation switches and an opening and closing process of the vacuum interrupter 102.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a circuit breaker that contains two isolator transmission of direct action which characterized in that: comprises that
A frame;
the double-isolation switch comprises three groups of isolation conductive assemblies longitudinally distributed on the rack, each group of isolation conductive assemblies comprises two screw rods, two isolation conductive cylinders and a turbine, the two isolation conductive cylinders are respectively sleeved outside the two screw rods, the two screw rods are connected through the turbine, and the thread turning directions of the two screw rods are opposite;
the isolation rotating shaft is arranged on the rack;
the three scroll bars are jointly arranged on the isolation rotating shaft and rotate along with the rotation of the isolation rotating shaft, the scroll bars and the turbines are in butt joint and matched one by one, the scroll bars are used for driving the turbines to rotate so as to drive the two screw rods of each group of isolation conductive assemblies to rotate, and finally the two isolation conductive cylinders on the two screw rods are driven to do vertical anisotropic linear motion to be connected or disconnected with an external circuit, so that the opening and closing of the double isolation switches are realized;
a main shaft of the circuit breaker, which is arranged on the frame,
a vacuum circuit breaker sets up in the frame, and vacuum circuit breaker includes utmost point post and sets up the vacuum interrupter in utmost point post, and vacuum interrupter's quiet end is connected with two electrically conductive section of thick bamboos of keeping apart electrical connection respectively, and vacuum interrupter's the end of moving forms the drive with the circuit breaker main shaft through a drive assembly and is connected, and the circuit breaker main shaft is rotatory to be moved through the end of moving of drive assembly drive vacuum interrupter, realizes opening and close of vacuum interrupter.
2. The circuit breaker with direct-acting double-isolating switch transmission device according to claim 1, characterized in that: and screw sleeves connected with the screw rods are respectively fixed at the ends, close to each other, of the two isolated conductive cylinders.
3. The circuit breaker with direct-acting double-isolating switch transmission device according to claim 1, characterized in that: and two ends of the turbine are respectively riveted and fixed with the two screw rods through pins.
4. The circuit breaker with direct-acting double-isolating switch transmission device according to claim 1, characterized in that: the end, far away from each other, of each of the two isolating conductive cylinders is provided with a nut which is used for forming movable electrical connection with an external circuit, and the nuts on the two isolating conductive cylinders are in contact with or separated from the external circuit simultaneously.
5. The circuit breaker with direct-acting double-isolating switch transmission device according to claim 1, characterized in that: the breaker main shaft with the transmission assembly is connected through a connecting lever, and an energy storage spring is sleeved outside the connecting lever.
6. The circuit breaker with direct-acting double-isolating switch transmission device according to claim 1, characterized in that: the transmission assembly comprises an insulating pull rod, a transmission lever and a pull rod, one end of the insulating pull rod is pivoted on the main shaft of the circuit breaker, the other end of the insulating pull rod is connected with one end of the transmission lever, one end of the pull rod is connected with the other end of the transmission lever, and the other end of the pull rod is in driving connection with the movable end of the vacuum arc extinguish chamber.
7. The circuit breaker with direct-acting double-isolating switch transmission device according to claim 1, characterized in that: and one side of the rack is also provided with an operating mechanism which is used for controlling and driving the isolation rotating shaft or the main shaft of the circuit breaker to rotate around the axis of the isolation rotating shaft or the main shaft of the circuit breaker respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111259166.1A CN114121545A (en) | 2021-10-28 | 2021-10-28 | Circuit breaker with direct-acting double-isolating switch transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111259166.1A CN114121545A (en) | 2021-10-28 | 2021-10-28 | Circuit breaker with direct-acting double-isolating switch transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114121545A true CN114121545A (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111259166.1A Pending CN114121545A (en) | 2021-10-28 | 2021-10-28 | Circuit breaker with direct-acting double-isolating switch transmission device |
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| CN (1) | CN114121545A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990686A (en) * | 2021-10-28 | 2022-01-28 | 协成科技股份有限公司 | Handcart circuit breaker with interlocking manual and electric operating device |
-
2021
- 2021-10-28 CN CN202111259166.1A patent/CN114121545A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990686A (en) * | 2021-10-28 | 2022-01-28 | 协成科技股份有限公司 | Handcart circuit breaker with interlocking manual and electric operating device |
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