CN218299704U - High-arc-voltage epoxy solid-sealed polar pole for direct-current circuit breaker - Google Patents
High-arc-voltage epoxy solid-sealed polar pole for direct-current circuit breaker Download PDFInfo
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- CN218299704U CN218299704U CN202222705358.7U CN202222705358U CN218299704U CN 218299704 U CN218299704 U CN 218299704U CN 202222705358 U CN202222705358 U CN 202222705358U CN 218299704 U CN218299704 U CN 218299704U
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Abstract
The utility model discloses a direct current breaker of high arc voltage is with epoxy solid seal utmost point post, including epoxy cavity cylinder, go up terminal outgoing lines, vacuum interrupter, conductive connecting piece, terminal outgoing lines, magnetism blow coil, wire down, inside from the top down of epoxy cavity cylinder connects gradually terminal outgoing lines, vacuum interrupter, conductive connecting piece, terminal outgoing lines down, and the vacuum interrupter side sets up magnetism and blows the coil, and magnetism blows coil bottom connecting wire, wire downwardly extending to epoxy cavity cylinder outside. The utility model discloses utilize magnetism to blow the coil and produce directional magnetic field for the electric arc in the vacuum arc extinguishing chamber removes, and extension electric arc length improves arc voltage, realizes that the electric current shifts to parallelly connected power electronic switch fast.
Description
Technical Field
The utility model relates to a direct current explosion chamber technical field, concretely relates to direct current breaker of high arc voltage is with epoxy solid seal utmost point post.
Background
The embedded pole technology is that the vacuum arc-extinguishing chamber and the main conductive loop are completely encapsulated by epoxy resin, so that the size of the vacuum arc-extinguishing chamber is reduced, the vacuum arc-extinguishing chamber is not influenced by the external environment completely, and the weather resistance is improved. The solid-sealed polar pole is used for a direct-current circuit breaker and has the technical advantages of good stain resistance, miniaturization, maintenance-free property, easiness in installation and the like.
The direct current breaker is a key device for constructing a direct current power grid and is also a basic guarantee for safe operation of the system. Because there is no natural zero crossing point in the direct current, the mature arc extinguishing technology in the alternating current breaker can not be applied, the effective way to solve the problem is that the direct current breaker automatically creates the current zero crossing point, the current method is: the contact opening generates high arc voltage to resist system voltage, the current is forced to pass zero, and the rapid switching-on and switching-off are realized based on the current transfer principle. However, because the arc voltage of a conventional switch fracture is relatively low, it is difficult to directly convert the current of the main through-current branch into the transfer branch through the arc voltage of the switch fracture, and therefore, a plurality of forced current conversion devices are adopted in the topology route of the existing direct current circuit breaker, the technical scheme is complex, and the cost is high.
SUMMERY OF THE UTILITY MODEL
For the defect and not enough of solving above-mentioned technical problem, the utility model provides a direct current breaker of high arc voltage seals utmost point post admittedly with epoxy utilizes the magnetism to blow the coil and produces directional magnetic field for the electric arc in the vacuum arc extinguishing chamber removes, and arc length is lengthened, improves arc voltage, realizes that the electric current shifts to parallelly connected power electronic switch fast.
In order to realize the technical purpose, the utility model discloses a technical scheme is:
the utility model provides a direct current breaker of high arc voltage is with epoxy solid utmost point post that seals, includes epoxy cavity cylinder, goes up terminal outgoing lines, vacuum interrupter, electrically conductive connecting piece, lower terminal outgoing lines, magnetism blows coil, wire, and inside from the top down of epoxy cavity cylinder connects gradually terminal outgoing lines, vacuum interrupter, electrically conductive connecting piece, terminal outgoing lines down, and the vacuum interrupter side sets up magnetism and blows the coil, and magnetism blows coil bottom and connects the wire, and the wire downwardly extending is to epoxy cavity cylinder outside.
Furthermore, a silicon rubber buffer layer is arranged between the vacuum arc-extinguishing chamber and the epoxy resin hollow cylinder.
Furthermore, the lower end of the lower wire outlet terminal is connected with an insulating pull rod, and the insulating pull rod extends to the outside of the epoxy resin hollow column.
Further, the conductive connecting piece is a copper conducting piece.
Furthermore, the number of the magnetic blowing coils is two, and the two magnetic blowing coils are symmetrically arranged on two sides of the vacuum arc extinguish chamber.
Furthermore, the magnetic blow-out coil has a plurality of, sets up around vacuum interrupter week circle array.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model utilizes the magnetic blow-out coil to generate a directional magnetic field, accelerates the arc movement in the vacuum arc extinguish chamber, lengthens the arc length, improves the arc voltage, and realizes the quick transfer of current to the parallel power electronic switch, thereby achieving the effects of forced zero passage and quick cut-off of current; and the magnetic blow-out coil is connected with an external power supply through a lead, so that the magnetic field can be freely regulated, and the regulation of the arc voltage of the switching-on/off port is more independent and autonomous.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural view of the present invention;
in the figure: the device comprises a 1-epoxy resin hollow cylinder, a 2-upper outlet terminal, a 3-vacuum arc extinguish chamber, a 4-conductive connecting piece, a 5-lower outlet terminal, a 6-magnetic blow coil and a 7-lead.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is conventionally understood by those skilled in the art, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in the figure, the epoxy solid-sealed polar pole for the high-arc-voltage direct-current circuit breaker comprises an epoxy resin hollow cylinder 1, an upper outgoing line terminal 2, a vacuum arc extinguish chamber 3, a conductive connecting piece 4, a lower outgoing line terminal 5, a magnetic blow coil 6 and a lead 7, wherein the epoxy resin hollow cylinder 1 is internally connected with the outgoing line terminal 2, the vacuum arc extinguish chamber 3, the conductive connecting piece 4 and the lower outgoing line terminal 5 in sequence from top to bottom, the magnetic blow coil 6 is arranged on the side surface of the vacuum arc extinguish chamber 3, the lead 7 is connected to the bottom of the magnetic blow coil 6, and the lead 7 extends downwards to the outside of the epoxy resin hollow cylinder 1. The static end conductive surface of the vacuum arc extinguish chamber is connected with the upper outgoing terminal 2 of the solid-sealed polar pole in a screw fastening mode, the movable end conductive surface is connected with the lower outgoing terminal 5 of the solid-sealed polar pole through a conductive connecting piece 4, and the conductive connecting piece 4 is a copper guide piece and can be connected in a spring-like contact finger mode.
Furthermore, the lower end of the lower outlet terminal 5 is connected with an insulating pull rod, and the insulating pull rod extends to the outside of the epoxy resin hollow column 1. The solid-sealed polar pole is connected with a primary conductive part of a power grid through exposed conductive surfaces of the upper wire outlet seat and the lower wire outlet seat, and the opening and closing actions of the lower wire outlet seat of the switch are realized by utilizing the simultaneous connection of the insulating pull rod, the movable conductive rod of the vacuum arc extinguish chamber and the operating mechanism of the vacuum circuit breaker.
Furthermore, a silicon rubber buffer layer is arranged between the vacuum arc-extinguishing chamber 3 and the epoxy resin hollow cylinder 1.
Preferably, the magnetic blow-by coils 6 are two and symmetrically arranged at two sides of the vacuum arc-extinguishing chamber 3.
Preferably, the magnetic blow-out coil 6 is provided in a plurality and is arranged around the vacuum arc extinguish chamber 3 in an array mode.
The utility model discloses direct current circuit breaker of high arc pressure is with epoxy solid seal utmost point post adopts epoxy cavity cylinder 1, blows coil 6 and the wire 7 of being connected with external equipment with vacuum interrupter 3, leading-out terminal, conductive connecting piece 4 and magnetism and pours into one piece integration product, compares the epoxy of traditional structure and seals utmost point post admittedly and has increased magnetism and blow coil 6 and wire 7 of being connected with external equipment. The utility model is assembled into a switch, and when the moving contact is separated from the static contact, an arc voltage is generated between the moving contact and the static contact; in the process, external equipment works, the external equipment supplies current to the magnetic blow-out coil 6 through the lead 7 to generate a directional magnetic field, so that the movement of electric arcs in the vacuum arc extinguish chamber 3 is accelerated, the length of the electric arcs is lengthened, the voltage of the electric arcs is improved, and the current is quickly transferred to the parallel power electronic switch. Because the primary part and the secondary part are completely independent, the magnetic field of the magnetic blow-out coil 6 is freely adjusted, so that the regulation and control of the arc voltage of the switching-on/off port are more independent and autonomous, and the switching-on/off current is quickly transferred to the parallel power electronic switch.
Of course, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it is intended that all such modifications and variations be considered within the spirit or scope of the present invention as defined by the appended claims.
Claims (6)
1. The utility model provides a direct current breaker of high arc voltage is with solid utmost point post that seals of epoxy which characterized in that: including epoxy cavity cylinder (1), go up terminal outgoing lines (2), vacuum interrupter (3), conductive connecting piece (4), terminal outgoing lines (5) down, magnetism blows coil (6), wire (7), inside from the top down of epoxy cavity cylinder (1) connects gradually terminal outgoing lines (2), vacuum interrupter (3), conductive connecting piece (4), terminal outgoing lines (5) down, vacuum interrupter (3) side sets up magnetism and blows coil (6), magnetism blows coil (6) bottom connecting wire (7), wire (7) downwardly extending to epoxy cavity cylinder (1) outside.
2. The epoxy solid-sealed pole for the high-arc voltage direct current breaker according to claim 1, characterized in that: and a silicon rubber buffer layer is arranged between the vacuum arc extinguish chamber (3) and the epoxy resin hollow cylinder (1).
3. The epoxy solid-sealed pole for the high-arc voltage direct current breaker according to claim 1, characterized in that: the lower end of the lower outgoing line terminal (5) is connected with an insulating pull rod, and the insulating pull rod extends to the outside of the epoxy resin hollow column body (1).
4. The epoxy solid-sealed pole for the high-arc voltage direct current breaker according to claim 1, characterized in that: the conductive connecting piece (4) is a copper conducting piece.
5. The epoxy solid-sealed pole for the high-arc voltage direct current breaker according to claim 1, characterized in that: the number of the magnetic blowing coils (6) is two, and the two magnetic blowing coils are symmetrically arranged on two sides of the vacuum arc extinguish chamber (3).
6. The epoxy solid-sealed pole for the high-arc voltage direct current breaker according to claim 1, characterized in that: the magnetic blow-out coils (6) are multiple and are symmetrically arranged around the circumference array of the vacuum arc-extinguishing chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222705358.7U CN218299704U (en) | 2022-10-13 | 2022-10-13 | High-arc-voltage epoxy solid-sealed polar pole for direct-current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222705358.7U CN218299704U (en) | 2022-10-13 | 2022-10-13 | High-arc-voltage epoxy solid-sealed polar pole for direct-current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218299704U true CN218299704U (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222705358.7U Active CN218299704U (en) | 2022-10-13 | 2022-10-13 | High-arc-voltage epoxy solid-sealed polar pole for direct-current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218299704U (en) |
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2022
- 2022-10-13 CN CN202222705358.7U patent/CN218299704U/en active Active
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