CN109494115B - Quick switch with electrode damping - Google Patents
Quick switch with electrode damping Download PDFInfo
- Publication number
- CN109494115B CN109494115B CN201811197941.3A CN201811197941A CN109494115B CN 109494115 B CN109494115 B CN 109494115B CN 201811197941 A CN201811197941 A CN 201811197941A CN 109494115 B CN109494115 B CN 109494115B
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- CN
- China
- Prior art keywords
- vacuum
- rod
- electrode
- switch
- spring
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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
-
- 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
- H01H33/666—Operating arrangements
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a fast switch with electrode damping, comprising: the vacuum bubble, the transmission mechanism, the driving mechanism, the spring and the base; the transmission mechanism and the spring are connected between the vacuum bubble and the base; the driving structure can drive the transmission mechanism, so that the transmission mechanism acts on the vacuum bubble to enable the vacuum bubble to generate an opening/closing action. According to the rapid switch with the electrode damping, due to the design that the transmission of the sector gear is separated from the damping of the spring, rapid opening and closing are achieved, the safety of circuit electric equipment is protected, the possible restrike or restriking damage is avoided, and the operation safety of the electric equipment is improved; meanwhile, the impact of the transmission force on the vacuum tube is reduced, the service life of the vacuum tube is effectively protected, the service life of the permanent magnet vacuum switch is greatly prolonged, the bounce of a static electrode and a dynamic electrode caused by strong impact force is also avoided, the phenomenon of heavy breakdown caused by the bounce is further avoided, and the contradiction between the quick switching of the switch and the impact of the transmission force is effectively solved.
Description
Technical Field
The invention relates to the technical field of high-voltage vacuum permanent magnet switches, in particular to a quick switch with electrode damping.
Background
The high-voltage vacuum permanent magnet switch in the prior application generally adopts a transmission rod to drive a crank arm and simultaneously overcomes the deformation of a spring to achieve the effect of closing or adopts a direct-acting type to perform opening and closing. The closing speed of the vacuum switch is reduced to a certain extent, otherwise, a larger transmission force needs to be provided, so that the vacuum bubble is greatly damaged by larger closing impact force, the service life of the vacuum bubble is seriously reduced, frequent bouncing also occurs in the closing process, and the probability of heavy breakdown or reburning is easily caused; the latter has simple structure and labor saving in design, can improve the speed, but can also generate larger closing impact force and bounce phenomenon, so the contradiction between the closing and opening speed and the transmission force impact is not solved well all the time. If divide closing speed not fast enough then can appear heavy puncture or relight the phenomenon, cause serious harm to switch and power equipment's insulation, if divide closing speed too fast then need great transmission power, the transmission power increase then causes the impact great, and is great to the damage of vacuum bubble, reduces switch life. At present, no method and product for well balancing the transmission force of a quick switch and reducing the switching-on and switching-off impact exist.
Disclosure of Invention
In view of the above, the present invention provides a fast switch with electrode damping, which can fast open/close the switch, effectively avoid the opening/closing impact force, greatly prolong the service life of the switch, and simultaneously improve the operation safety of the power equipment, thereby effectively solving the contradiction between the fast switching of the switch and the transmission force impact.
Based on above-mentioned purpose, a fast switch with electrode damping is proposed, include: the vacuum bubble, the transmission mechanism, the driving mechanism, the spring and the base; the transmission mechanism and the spring are connected between the vacuum bubble and the base; the driving structure can drive the transmission mechanism, so that the transmission mechanism acts on the vacuum bubble to enable the vacuum bubble to generate an opening/closing action.
In some embodiments, the vacuum bubble comprises: the device comprises a static conductive rod, a static electrode, a dynamic conductive rod and a vacuum shell; the static electrode and the moving electrode are oppositely arranged at intervals and are both arranged in the vacuum shell; the static conductive rod penetrates into the vacuum shell and is connected with the static electrode, and the movable conductive rod penetrates into the vacuum shell in a sliding manner and is connected with the movable electrode; the parts of the static conductive rod and the movable conductive rod, which are positioned outside the vacuum shell, are connected with external circuits.
In some embodiments, the transmission mechanism comprises: the first insulating rod and the second insulating rod are provided with sector transmission gears; the first insulating rod is rotatably connected with one end, positioned outside the vacuum shell, of the movable conducting rod, the first insulating rod and the second insulating rod are sequentially hinged, and the second insulating rod is rotatably connected with the base.
In some embodiments, the drive mechanism comprises: a drive shaft and drive with a linear drive gear; the driver drives the driving rod to drive the transmission gear meshed with the driving gear to rotate, so that the second insulating rod drives the first insulating rod to act on the movable conducting rod, and the inside of the vacuum bulb is opened/closed.
In some embodiments, one end of the spring is connected to the movable conducting rod through a connecting seat, and the other end of the spring is connected to the base for generating a damping effect of the opening/closing action.
In some embodiments, the portion of the movable conductive rod between the movable electrode and the inner wall of the vacuum enclosure is provided with a bellows.
In some embodiments, the drive rod further comprises: the sliding groove is fixed on the base, and the driving sliding rod is connected to the sliding groove in a sliding mode.
In some embodiments, the drive is a permanent magnet drive.
From the above, the rapid switch with the electrode damping provided by the invention realizes rapid opening and closing through the design of separating the sector gear transmission from the spring damping, protects the safety of the circuit electric equipment, avoids the possible restriking or restriking damage, and improves the operation safety of the electric equipment; meanwhile, the impact of the transmission force on the vacuum tube is reduced, the service life of the vacuum tube is effectively protected, the service life of the permanent magnet vacuum switch is greatly prolonged, the bounce of a static electrode and a dynamic electrode caused by strong impact force is also avoided, the phenomenon of heavy breakdown caused by the bounce is further avoided, and the contradiction between the quick switching of the switch and the impact of the transmission force is effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the opening position of the present invention;
FIG. 2 is a schematic diagram of the closing position of the present invention.
Reference numerals: 1-static conductive rod, 2-static electrode, 3-dynamic electrode, 4-bellows, 5-dynamic conductive rod, 6-vacuum shell, 7-first insulating rod, 8-second insulating rod, 9-driving rod, 901-sliding groove, 902-driving gear, 903-driving sliding rod, 10-spring, 11-base, 12-driver, 13-transmission gear, 14-connecting seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
The embodiment of the invention provides a quick switch with electrode damping, which comprises: the vacuum bubble, the transmission mechanism, the driving mechanism, the spring and the base; the transmission mechanism and the spring are connected between the vacuum bubble and the base; the driving structure can drive the transmission mechanism, so that the transmission mechanism acts on the vacuum bubble to enable the vacuum bubble to generate an opening/closing action.
The actuator and spring are connected in parallel between the vacuum bulb and the base.
Further, the vacuum bubble includes: the device comprises a static conductive rod, a static electrode, a dynamic conductive rod and a vacuum shell; the static electrode and the moving electrode are oppositely arranged at intervals and are both arranged in the vacuum shell; the static conductive rod penetrates into the vacuum shell and is connected with the static electrode, and the movable conductive rod penetrates into the vacuum shell in a sliding manner and is connected with the movable electrode; the parts of the static conductive rod and the movable conductive rod, which are positioned outside the vacuum shell, are connected with external circuits.
As shown in fig. 1, the vacuum bubble includes: the device comprises a static conductive rod, a static electrode, a dynamic conductive rod and a vacuum shell; the static electrode and the moving electrode are oppositely arranged and are arranged in the vacuum shell, the static electrode is connected with the static conducting rod, the moving electrode is connected with the moving conducting rod, and the static conducting rod and the moving conducting rod are located at the outer portion of the vacuum shell and are connected with an external circuit.
Further, the transmission mechanism includes: the first insulating rod and the second insulating rod are provided with sector transmission gears; the first insulating rod is rotatably connected with one end, positioned outside the vacuum shell, of the movable conducting rod, the first insulating rod and the second insulating rod are sequentially hinged, and the second insulating rod is rotatably connected with the base.
Further, the drive mechanism includes: a drive shaft and drive with a linear drive gear; the driver drives the driving rod to drive the transmission gear meshed with the driving gear to rotate, so that the second insulating rod drives the first insulating rod to act on the movable conducting rod, and the inside of the vacuum bulb is opened/closed.
Furthermore, one end of the spring is connected with the movable conducting rod through a connecting seat, and the other end of the spring is connected with the base and used for generating a damping effect of switching-off/switching-on actions.
Furthermore, a corrugated pipe is arranged on the movable conducting rod part between the movable electrode and the inner wall of the vacuum shell.
Further, the drive rod further includes: the sliding groove is fixed on the base, and the driving sliding rod is connected to the sliding groove in a sliding mode.
Further, the driver is a permanent magnet driver.
As shown in fig. 1 and 2, in the embodiment of the present invention, considering that the fast switching sector gear transmission and the spring damping are separately arranged, and the damping with the electrode is provided, when switching on, the driving mechanism acts on the driving rod under the action of the permanent magnetic force, and the first insulating rod drives the second insulating rod to move through the mutually meshed driving gear and the transmission gear, so as to push the moving conductive rod, so that the moving conductive rod vertically rises to the distance of the opening of the switch; in this process, the fan-shaped drive gear on the second insulator spindle is driven rotatoryly along with drive gear's rotation, make the transmission power be decomposed into vertical two power upwards and the level left, along with drive gear's anticlockwise rotation, the transmission power is most used in the horizontal direction, when getting into the overtravel simultaneously, drive gear is horizontal vertical, the dynamic electrode will further rise, then drive gear can continue to one side slope to having the spring, and then the left end of base descends, make the spring stretched and arouse deformation, under the transmission power and the spring damping effect of being decomposed, the power that the dynamic electrode strikeed the static electrode reduces greatly. During opening, in the opening moment, the driving gear is pulled downwards under the action of opposite permanent magnetic force, the spring is quickly restored, the moving electrode and the static electrode are quickly separated under the action of the driving force and the restoring force of the spring, when the complete separation is achieved, the second insulating rod decomposes the driving force into two component forces of vertical downward component force and horizontal rightward component force, when the second insulating rod moves again, the left end of the base is gradually upwarped, the spring is extruded to enable the spring to be compressed and deformed, the damping of the continuous downward movement of the moving electrode is increased, and the impact force of opening is reduced.
As shown in fig. 1 and fig. 2, the operating principle of the switch in this embodiment is simply analyzed, and taking closing as an example, the whole switch is made to be an object system:
(1) the permanent magnetic force obtained by charging the coil in the permanent magnetic driving mechanism is F0；
(2) Permanent magnetic force F0The driving rod is pushed, the driving rod transmits force to the second insulating rod through the driving gear and the transmission gear which are meshed with each other, so that the movable conducting rod can quickly walk to the opening distance S, and the obtained speed of the movable conducting rod is v1This is an accelerated motion process. Along with the anticlockwise rotation of the transmission gear under the action of the driving gear, the stress of the movable conducting rod in the vertical upward direction is gradually reduced, the acceleration of the movable conducting rod is smaller and smaller, and the movement speed of the movable conducting rod is larger and larger.
According to the theorem of kinetic energy
Wherein, F0-a permanent magnetic force,
s-the distance of the stroke opening,
m-mass of transmission system (including transmission rod, transmission gear, sector gear, first insulating rod, second insulating rod and movable conductive rod),
v1-transmission system speed;
(3) the movable conducting rod moves to the part of the opening distance S and enters into the overtravel L, and the permanent magnetic force F0The most part of the force acting on the transmission gear of the second insulating rod is decomposed to the horizontal direction, and meanwhile, the counterclockwise rotation of the transmission gear enables the left end of the base to move downwards, so that the spring is stretched to deform, the spring is indirectly connected with the movable conducting rod through the connecting seat, and the movable conducting rod obtains a vertical downward deformation damping force F of the spring1The contact force of the moving electrode connected with the moving conductive rod acting on the static electrode is greatly reduced, thereby avoiding the impact of heavier force and reducing the number of the moving electrodesBouncing of (2) with an action force F upon contact with a static electrode0-F1. (at this time F0Is the force after being resolved).
(4) When the movable electrode contacts the static electrode to completely move over the section of the overtravel L, the damping force F is changed in the spring deformation1Under the action, the action of the whole resultant force is smaller and smaller, and finally the moving electrode and the static electrode are completely extruded, attached and contacted, so that the firm closing state is achieved, and the bouncing phenomenon cannot occur.
From the above, it can be seen that the embodiment of the invention can realize a fast opening/closing switch by adopting a scheme of separating transmission from electrode damping, protect the safety of line electric equipment, and avoid possible restriking or restriking damage. Meanwhile, the impact of the transmission force on the vacuum bubble can be reduced, the vacuum bubble is effectively protected, the service life of the permanent magnet vacuum switch is greatly prolonged, the bounce caused by strong impact force is avoided, and the phenomenon of heavy breakdown caused by the bounce is further avoided.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. A fast switch with electrode damping, comprising: the vacuum bubble, the transmission mechanism, the driving mechanism, the spring and the base;
the transmission mechanism and the spring are both connected between the vacuum bubble and the base; the driving structure can drive the transmission mechanism, so that the transmission mechanism acts on the vacuum bubble to enable the vacuum bubble to generate an opening/closing action;
the vacuum bubble includes: the device comprises a static conductive rod, a static electrode, a dynamic conductive rod and a vacuum shell; the static electrode and the moving electrode are oppositely arranged at intervals and are arranged in the vacuum shell;
the static conductive rod penetrates into the vacuum shell and is connected with the static electrode, and the movable conductive rod penetrates into the vacuum shell in a sliding mode and is connected with the movable electrode;
the transmission mechanism comprises a first insulating rod and a second insulating rod with a sector transmission gear; the first insulating rod is rotatably connected with one end, positioned outside the vacuum shell, of the movable conducting rod, the first insulating rod and the second insulating rod are sequentially hinged, and the second insulating rod is rotatably connected with the base;
the drive mechanism includes: a drive shaft and drive with a linear drive gear; the driver drives the driving rod to enable the driving gear to drive the transmission gear meshed with the driving gear to rotate, the second insulating rod drives the first insulating rod to act on the movable conducting rod, and the inside of the vacuum bulb is opened/closed.
2. The switch of claim 1, wherein the static conductive rod and the moving conductive rod are connected to external circuitry at portions outside the vacuum enclosure.
3. The switch of claim 1, wherein one end of the spring is connected to the moving conductive rod through a connecting seat, and the other end of the spring is connected to the base for generating a damping action of the opening/closing motion.
4. The switch of claim 1, wherein said movable conductive stem portion between said movable electrode and an inner wall of said vacuum housing is provided with a bellows.
5. The switch of claim 1, wherein the drive bar further comprises: the sliding groove is fixed on the base, and the driving sliding rod is connected to the sliding groove in a sliding mode.
6. The switch of claim 1, wherein the driver is a permanent magnet driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197941.3A CN109494115B (en) | 2018-10-15 | 2018-10-15 | Quick switch with electrode damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197941.3A CN109494115B (en) | 2018-10-15 | 2018-10-15 | Quick switch with electrode damping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109494115A CN109494115A (en) | 2019-03-19 |
| CN109494115B true CN109494115B (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811197941.3A Expired - Fee Related CN109494115B (en) | 2018-10-15 | 2018-10-15 | Quick switch with electrode damping |
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| Country | Link |
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| CN (1) | CN109494115B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203966962U (en) * | 2014-08-02 | 2014-11-26 | 浙江沈高所电气有限公司 | A kind of laborsaving minute brake structure of vacuum circuit-breaker |
| CN108428587A (en) * | 2018-04-09 | 2018-08-21 | 湖南斯德克智能开关有限公司 | A kind of vacuum direct current quick breaker |
-
2018
- 2018-10-15 CN CN201811197941.3A patent/CN109494115B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203966962U (en) * | 2014-08-02 | 2014-11-26 | 浙江沈高所电气有限公司 | A kind of laborsaving minute brake structure of vacuum circuit-breaker |
| CN108428587A (en) * | 2018-04-09 | 2018-08-21 | 湖南斯德克智能开关有限公司 | A kind of vacuum direct current quick breaker |
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| Publication number | Publication date |
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| CN109494115A (en) | 2019-03-19 |
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Granted publication date: 20200918 Termination date: 20211015 |