CN113192774A - Alternating current double-electric switching device capable of providing overcurrent protection during external circuit short circuit - Google Patents
Alternating current double-electric switching device capable of providing overcurrent protection during external circuit short circuit Download PDFInfo
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- CN113192774A CN113192774A CN202110467364.0A CN202110467364A CN113192774A CN 113192774 A CN113192774 A CN 113192774A CN 202110467364 A CN202110467364 A CN 202110467364A CN 113192774 A CN113192774 A CN 113192774A
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- Prior art keywords
- fixedly connected
- overcurrent protection
- external circuit
- switching device
- device capable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/52—Cooling of switch parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to the technical field of alternating-current double-electric switching devices, and discloses an alternating-current double-electric switching device capable of providing overcurrent protection during short circuit of an external circuit. This can provide two electric auto-change over devices of interchange of overcurrent protection when external circuit short circuit, it is too big through the electric current in the electromagnetic plate of both sides, lead to the two to attract mutually and make the turning handle carry out the circuit switching, during cooperation piston rod and honeycomb duct relative motion, the arc extinguishing is carried out to the output air current to carry out reliable overcurrent protection, carry out the early warning to the user and remind emergency treatment when can be effectual when short circuit to external circuit.
Description
Technical Field
The invention relates to the technical field of alternating current double-electric switching devices, in particular to an alternating current double-electric switching device capable of providing overcurrent protection when an external circuit is short-circuited.
Background
At present, two electric auto-change over devices of interchange among the corresponding distribution equipment often can lead to appearing too big electric current in the whole circuit because of the external circuit short circuit in the use, cause the unable normal work of corresponding switch shifter, the problem that corresponding circuit and link equipment burn out, and lead to having the potential safety hazard, when the circuit short circuit in addition, the user can't obtain the early warning of very first time and remind, then lead to its unable effectual emergency treatment of making to economic loss appears.
Aiming at the defects of the prior art, the invention provides the alternating current double-electric switching device capable of providing overcurrent protection when an external circuit is short-circuited, has the advantages of effectively carrying out reliable overcurrent protection when the external circuit is short-circuited and effectively carrying out early warning and reminding on a user for emergency treatment, and solves the problems that the common alternating current double-electric switching device cannot carry out reliable overcurrent protection when the external circuit is short-circuited and cannot carry out early warning and reminding on the user for emergency treatment in the use process.
Disclosure of Invention
In order to realize the purposes of effectively carrying out reliable overcurrent protection when an external circuit is short-circuited and effectively carrying out early warning reminding on a user for emergency treatment, the invention provides the following technical scheme: an alternating current double-electric switching device capable of providing overcurrent protection when an external circuit is short-circuited comprises a positioning frame, wherein two sides of the positioning frame are both connected with a sliding block in a sliding mode, the middle part of the front end of the sliding block is rotatably connected with a rotating handle, the upper side and the lower side of the rotating handle are fixedly connected with symmetrical limiting strips, one side, close to the middle part of the positioning frame, of the front end of the sliding block is rotatably connected with a butting column extending onto the rotating handle, two sides of the lower limiting strip at the front end of the sliding block are both fixedly connected with limiting columns, the lower ends of the two sides of the positioning frame are both fixedly connected with limiting pins, one side, close to the middle part of the positioning frame, of the rear end of the sliding block is fixedly connected with an electromagnetic plate, the rear end of the sliding block is fixedly connected with an arc extinguish chamber extending onto the electromagnetic plate, the upper side and the lower side of the positioning frame are both fixedly connected with sliding frames, the upper side and the lower side of the arc extinguish chamber are both fixedly connected with guide pipes, and piston rods extending into inner cavities of the guide pipes are fixedly connected onto the side walls of the sliding frames, the front end sliding connection of sliding frame has the stopper, the spacing spring of fixedly connected with between the stopper and the inner chamber lateral wall of sliding frame, swing joint has the resistance lever between stopper and the electromagnetic plate, the one end fixedly connected with bee calling organ of locating frame is kept away from to sliding frame, the equal fixedly connected with polar plate in a side surface that bee calling organ and stopper are close to.
Preferably, the rear end of the rotating handle is fixedly connected with an electric contact extending into the inner cavity of the arc extinguishing chamber.
Preferably, the butt spring that extends to on the turning handle is cup jointed in the activity on the butt post to when making the turning handle be in different deflection state, all can be stabilized spacing.
Preferably, the magnetic poles of the adjacent surfaces of the electromagnetic plates after being electrified are opposite, so that the electromagnetic plates can drive the sliding block to move rapidly to effectively switch the circuit.
Preferably, the arc extinguishing chamber is made of ceramic and has high insulation and high temperature resistance.
Preferably, the piston rod is movably sleeved with a buffer spring extending to the flow guide pipe, and due to the fact that a corresponding switch switching mechanism in the device is rapid when an external circuit is short-circuited, relative movement between the flow guide pipe and the piston rod can be effectively buffered, and the service life of the piston rod can be greatly prolonged.
Preferably, a protective sleeve covering the polar plate is fixedly connected between the limiting block and the buzzer, so that the influence of external dust and the like on the working process of a capacitance mechanism formed by the polar plate is avoided.
Advantageous effects
Compared with the prior art, the invention provides the alternating current double-electric switching device capable of providing overcurrent protection when an external circuit is short-circuited, and the alternating current double-electric switching device has the following beneficial effects:
1. this can provide two electric auto-change over devices of interchange of overcurrent protection when external circuit short circuit, the electric current that lets in the electromagnetic plate when passing through the external circuit short circuit is too big, the electromagnetic plate of both sides attracts mutually and drives the slider removal, make the turning handle change the deflection state, with the hookup location of the electric property contact that changes in the arc extinguishing chamber inner chamber, then switch over the circuit and reach the protection effect, drive the explosion chamber when cooperation slider removes and make the piston rod insert the honeycomb duct passively in, then can make the inside gas of honeycomb duct be carried to the explosion chamber in, blow out the action to the electric arc that the contact conversion caused, and the gas flow can be very big eliminates the produced high fever of high-voltage electric arc, and then avoid corresponding circuit switching mechanism to become invalid and damage, thereby can effectually carry out reliable overcurrent protection when short circuit to the external circuit.
2. This can provide two electric auto-change over devices of interchange of overcurrent protection when external circuit short circuit, lead to when overflowing through external circuit short circuit, the pulling force of spacing spring can be overcome to the stopper, the polar plate that drives its end connection is close to buzzer surface connection, when the relative distance between two polar plates reduces to certain extent, the electric capacity increase of the capacitive mechanism who constitutes by the polar plate, its circuit becomes the access state in the twinkling of an eye, the electric current circulates to the buzzer in through corresponding wire, can make the buzzer in time ring the alarm when the circuit short circuit, thereby effectually carry out the early warning to the user and remind emergency treatment.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a front sectional view of a connecting portion of a slider or the like according to the present invention;
FIG. 4 is a front cross-sectional view of the connecting portions of the stopper of the present invention.
In the figure: 1. a positioning frame; 2. a slider; 3. a handle is rotated; 4. a limiting strip; 5. a butting post; 6. a limiting column; 7. a spacing pin; 8. an electromagnetic plate; 9. an arc extinguishing chamber; 10. a sliding frame; 11. a flow guide pipe; 12. a piston rod; 13. a limiting block; 14. a limiting spring; 15. a resistance bar; 16. a buzzer; 17. and (4) a polar plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an ac dual-electric switching device capable of providing overcurrent protection when an external circuit is short-circuited, comprises a positioning frame 1, wherein two sides of the positioning frame 1 are both slidably connected with a sliding block 2, the middle part of the front end of the sliding block 2 is rotatably connected with a rotating handle 3, the rear end of the rotating handle 3 is fixedly connected with an electric contact extending into an inner cavity of an arc extinguish chamber 9, the upper side and the lower side of the rotating handle 3 are fixedly connected with symmetrical limit strips 4, one side of the front end of the sliding block 2, which is close to the middle part of the positioning frame 1, is rotatably connected with a butting column 5 extending onto the rotating handle 3, the butting column 5 is movably sleeved with a butting spring extending onto the rotating handle 3, so that the rotating handle 3 can be stably limited when being in different deflection states, two sides of the lower limit strip 4 of the front end of the sliding block 2 are both fixedly connected with limit columns 6, two lower ends of the positioning frame 1 are both fixedly connected with limit pins 7, one side of the rear end of the sliding block 2, which is close to the middle part of the positioning frame 1, is fixedly connected with an electromagnetic plate 8, after the electromagnetic plate 8 is electrified, the adjacent surfaces have opposite magnetic poles, so that the electromagnetic plate can drive the slide block 2 to move rapidly to effectively switch the circuit, when the external circuit is short-circuited, the current introduced into the electromagnetic plates 8 is too large, the electromagnetic plates 8 on the two sides attract each other to drive the sliding block 2 to move, so that the rotating handle 3 changes the deflection state, so as to change the connection position of the electrical contact in the inner cavity of the arc extinguish chamber 9, and then switch the circuit to achieve the protection effect, and the arc extinguish chamber 9 is driven to insert the piston rod 12 into the draft tube 11 when the sliding block 2 moves, so that the gas in the draft tube 11 can be conveyed into the arc extinguish chamber 9, the arc caused by contact switching is blown out, and the high heat generated by the high-voltage arc can be greatly eliminated by the gas flow, and further avoid the corresponding circuit switching mechanism to lose efficacy and damage to can carry out reliable overcurrent protection when effectual to external circuit short circuit.
The rear end of the slide block 2 is fixedly connected with an arc extinguish chamber 9 extending to the electromagnetic plate 8, the arc extinguish chamber 9 is made of ceramic and has high insulation and high temperature resistance, the upper side and the lower side of the positioning frame 1 are fixedly connected with slide frames 10, the upper side and the lower side of the arc extinguish chamber 9 are fixedly connected with guide pipes 11, the side wall of the slide frame 10 is fixedly connected with a piston rod 12 extending to the inner cavity of the guide pipe 11, the piston rod 12 is movably sleeved with a buffer spring extending to the guide pipe 11, the relative switch switching mechanism in the equipment is rapid when an external circuit is short-circuited, so that the relative motion between the guide pipe 11 and the piston rod 12 can be effectively buffered, the service life of the piston rod 12 can be greatly prolonged, the front end of the slide frame 10 is slidably connected with a limit block 13, and a protective sleeve covering the polar plate 17 is fixedly connected between the limit block 13 and the buzzer 16, thereby avoiding the influence of external dust and the like on the working of the capacitance mechanism formed by the polar plates 17, a limiting spring 14 is fixedly connected between the limiting block 13 and the side wall of the inner cavity of the sliding frame 10, a resistance rod 15 is movably connected between the limiting block 13 and the electromagnetic plate 8, a buzzer 16 is fixedly connected at one end of the sliding frame 10 far away from the positioning frame 1, the polar plates 17 are fixedly connected on the surfaces of one sides adjacent to the buzzer 16 and the limiting block 13, when overcurrent is caused by external circuit short circuit, the limiting block 13 overcomes the tensile force of the limiting spring 14 to drive the polar plates 17 connected with the end parts of the limiting spring to approach the polar plates 17 connected with the surface of the buzzer 16, when the relative distance between the two polar plates 17 is reduced to a certain degree, the capacitance of the capacitance mechanism formed by the polar plates 17 is increased, the circuit is instantly changed into a passage state, the current flows into the buzzer 16 through corresponding leads, so that the buzzer 16 can sound an alarm in time when the circuit short circuit is short circuit, therefore, the early warning reminding is effectively carried out on the user for emergency treatment.
The working principle is as follows: the alternating current double-electric switching device capable of providing overcurrent protection when an external circuit is in short circuit automatically leads current which is introduced into electromagnetic plates 8 at two sides to be overlarge when the external circuit is in short circuit, the electromagnetic plates 8 at two sides extrude a resistance rod 15 due to mutual attraction, so that a limiting block 13 overcomes the pulling force of a limiting spring 14 to move to one side far away from a positioning frame 1 on a sliding frame 10, the electromagnetic plates 8 drive sliding blocks 2 at two sides to mutually approach, when a limiting strip 4 at the lower end of a rotating handle 3 abuts against a limiting pin 7 at one side close to the sliding frame 10, the limiting strip 4 is extruded by the limiting pin 7, and deflects for a certain angle and keeps fixed under the action of an abutting column 5 so as to change the connecting position of an electric contact in an inner cavity of an arc extinguish chamber 9, then the circuit is switched to achieve the protection effect, the arc extinguish chamber 9 is driven to be inserted into a flow guide pipe 11 by matching with the sliding block 2 to move, then the gas in the draft tube 11 is transported to the arc extinguish chamber 9 to blow out the high voltage arc caused during the contact switching period, and the gas flow can greatly eliminate the high heat generated by the high voltage arc, thereby avoiding the failure and damage of the corresponding circuit switching mechanism, and effectively performing reliable overcurrent protection when the external circuit is short-circuited, furthermore, when the external circuit is short-circuited to cause overcurrent, the limit block 13 overcomes the pulling force of the limit spring 14 to drive the polar plate 17 connected with the end part of the limit spring to approach the polar plate 17 connected with the surface of the buzzer 16, when the relative distance between the two polar plates 17 is reduced to a certain degree, the capacitance of the capacitance mechanism formed by the polar plates 17 is increased, the output current is far larger than the current blocked by the internal resistance of the corresponding lead and the buzzer 16, the circuit where the buzzer 16 is located is instantly changed into a passage state, the current flows to the buzzer 16 through the lead, so that the buzzer 16 can timely sound an alarm when the circuit is short-circuited, and therefore the user can be effectively warned by early warning to realize emergency treatment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a can provide two electric auto-change over devices of interchange of overcurrent protection when external circuit short circuit, includes positioning frame (1), its characterized in that: the locating device is characterized in that a sliding block (2) is connected to the two sides of the locating frame (1) in a sliding mode, a rotating handle (3) is connected to the middle of the front end of the sliding block (2) in a rotating mode, limiting strips (4) which are symmetrical are fixedly connected to the upper side and the lower side of the rotating handle (3), a butting column (5) extending to the rotating handle (3) is connected to one side, close to the middle of the locating frame (1), of the front end of the sliding block (2) in the rotating mode, limiting columns (6) are fixedly connected to the two sides of the limiting strips (4) on the lower portion of the front end of the sliding block (2), limiting pins (7) are fixedly connected to the lower ends of the two sides of the locating frame (1), an electromagnetic plate (8) is fixedly connected to one side, close to the middle of the locating frame (1), an arc extinguishing chamber (9) extending to the electromagnetic plate (8) is fixedly connected to the rear end of the sliding block (2), and a sliding frame (10) is fixedly connected to the upper side and the lower side of the locating frame (1), equal fixedly connected with honeycomb duct (11) in the upper and lower both sides of explosion chamber (9), fixedly connected with extends to piston rod (12) in honeycomb duct (11) inner chamber on the lateral wall of smooth frame (10), the front end sliding connection of smooth frame (10) has stopper (13), fixedly connected with spacing spring (14) between the inner chamber lateral wall of stopper (13) and smooth frame (10), swing joint has resistance lever (15) between stopper (13) and electromagnetic plate (8), the one end fixedly connected with bee calling organ (16) of locating frame (1) is kept away from in smooth frame (10), bee calling organ (16) and the equal fixedly connected with polar plate (17) in a side surface that stopper (13) are close to.
2. An ac dual-power switching device capable of providing overcurrent protection when an external circuit is shorted, according to claim 1, wherein: the rear end of the rotating handle (3) is fixedly connected with an electric contact extending into the inner cavity of the arc extinguish chamber (9).
3. An ac dual-power switching device capable of providing overcurrent protection when an external circuit is shorted, according to claim 1, wherein: the butt-joint column (5) is movably sleeved with a butt-joint spring extending to the rotating handle (3).
4. An ac dual-power switching device capable of providing overcurrent protection when an external circuit is shorted, according to claim 1, wherein: the adjacent surfaces of the electromagnetic plates (8) have opposite magnetic poles after being electrified.
5. An ac dual-power switching device capable of providing overcurrent protection when an external circuit is shorted, according to claim 1, wherein: the arc extinguish chamber (9) is made of ceramic.
6. An ac dual-power switching device capable of providing overcurrent protection when an external circuit is shorted, according to claim 1, wherein: the piston rod (12) is movably sleeved with a buffer spring extending to the flow guide pipe (11).
7. An ac dual-power switching device capable of providing overcurrent protection when an external circuit is shorted, according to claim 1, wherein: and a protective sleeve covering the polar plate (17) is fixedly connected between the limiting block (13) and the buzzer (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110467364.0A CN113192774B (en) | 2021-04-28 | 2021-04-28 | Alternating current double-electric switching device capable of providing overcurrent protection during external circuit short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110467364.0A CN113192774B (en) | 2021-04-28 | 2021-04-28 | Alternating current double-electric switching device capable of providing overcurrent protection during external circuit short circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113192774A true CN113192774A (en) | 2021-07-30 |
| CN113192774B CN113192774B (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110467364.0A Active CN113192774B (en) | 2021-04-28 | 2021-04-28 | Alternating current double-electric switching device capable of providing overcurrent protection during external circuit short circuit |
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| Country | Link |
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| CN (1) | CN113192774B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114823238A (en) * | 2022-06-29 | 2022-07-29 | 深圳市恒讯通电子有限公司 | Electromagnetic switch with overload protection |
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| WO2020126976A1 (en) * | 2018-12-18 | 2020-06-25 | Eaton Intelligent Power Limited | Switching device for guiding and switching of load currents |
| CN111477478A (en) * | 2020-05-08 | 2020-07-31 | 吴军 | Short-circuit protection device |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20200006016A1 (en) * | 2018-01-11 | 2020-01-02 | Idec Corporation | Safety Switch |
| CN109036989A (en) * | 2018-08-13 | 2018-12-18 | 安徽硕日光电科技有限公司 | A kind of quick electromagnetic push driven machine |
| CN209343954U (en) * | 2018-08-27 | 2019-09-03 | 北京明日电器设备有限责任公司 | A kind of large opening double power supply automatic transfer switch |
| CN109087832A (en) * | 2018-10-08 | 2018-12-25 | 嘉兴市加控电气设备制造有限公司 | Miniature circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114823238A (en) * | 2022-06-29 | 2022-07-29 | 深圳市恒讯通电子有限公司 | Electromagnetic switch with overload protection |
| CN114823238B (en) * | 2022-06-29 | 2022-11-04 | 深圳市恒讯通电子有限公司 | Electromagnetic switch with overload protection |
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| Publication number | Publication date |
|---|---|
| CN113192774B (en) | 2022-05-31 |
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