CN212380376U - Zero sequence transformer mounting structure of leakage protection circuit breaker - Google Patents
Zero sequence transformer mounting structure of leakage protection circuit breaker Download PDFInfo
- Publication number
- CN212380376U CN212380376U CN202021061380.7U CN202021061380U CN212380376U CN 212380376 U CN212380376 U CN 212380376U CN 202021061380 U CN202021061380 U CN 202021061380U CN 212380376 U CN212380376 U CN 212380376U
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- China
- Prior art keywords
- zero sequence
- sequence transformer
- cavity
- circuit breaker
- connecting portion
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- 238000004804 winding Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a zero sequence transformer mounting structure of earth leakage protection circuit breaker, including first casing component, second casing component, third casing component and the fourth casing component of equipment concatenation in proper order, it is formed with first cavity to connect between first casing component and the second casing component, connects between second casing component and the third casing component to be formed with the second cavity, connects between third casing component and the fourth casing component to be formed with the third cavity, it is provided with the pocket groove towards one side of second cavity to be provided with the third casing component, the back in pocket groove extends the protrusion towards third cavity direction, it is equipped with zero sequence transformer to inlay in the pocket groove, set up the through-hole that can supply zero sequence transformer to wear to establish on the second casing component, first cavity, second cavity are arranged in simultaneously to zero sequence transformer. Adopt the technical scheme of the utility model can make circuit breaker inner structure compacter, reduce the whole volume of circuit breaker.
Description
Technical Field
The utility model relates to a zero sequence transformer mounting structure of earth leakage protection circuit breaker.
Background
The circuit breaker with the electric leakage protection function in the prior art generally comprises a base and cover plates arranged on two sides of the base, wherein two cavities are respectively arranged at the corresponding positions of the base and the two cover plates, a circuit breaker module is accommodated in one cavity, an electric leakage protection module is accommodated in the other cavity, the electric leakage protection module comprises a zero sequence transformer, the zero sequence transformer comprises a magnetic ring and a secondary winding wound on the magnetic ring, the zero sequence transformer is usually embedded in the other cavity of the base, the hole center orientation of the zero sequence transformer is consistent with the arrangement direction of the circuit breaker module and the electric leakage protection module, and soft wires used for L-phase and N-phase current carrying are simultaneously arranged in the hole center of the zero sequence transformer in a penetrating mode, so that the internal space of the circuit breaker is nervous, and the whole width of the circuit breaker cannot.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to prior art not enough, the utility model provides a zero sequence transformer mounting structure of earth leakage protection circuit breaker makes circuit breaker inner structure compacter, reduces the whole volume of circuit breaker.
In order to achieve the above object, the utility model provides a zero sequence transformer mounting structure of an earth leakage circuit breaker, comprising a first shell member, a second shell member, a third shell member and a fourth shell member which are assembled and spliced in sequence, a first cavity is formed by the connection between the first shell component and the second shell component, a second cavity is formed by the connection between the second shell component and the third shell component, and a third cavity is formed by the connection between the third shell component and the fourth shell component, one side of the third shell component facing the second cavity is provided with a pocket groove, the back of the pocket groove extends and protrudes towards the third cavity, the pocket groove is embedded with a zero sequence transformer, the second shell component is provided with a through hole for the zero sequence transformer to penetrate through, and the zero sequence transformer is arranged in the first cavity and the second cavity simultaneously.
The technical scheme has the advantages that: the first cavity/second cavity/third cavity may be used to house a circuit breaker module/earth leakage protection module, because the pocket groove is arranged towards the direction of the second cavity and the back part of the pocket groove extends and protrudes towards the direction of the third cavity, when one side of the zero sequence transformer is embedded in the pocket groove, the other side of the zero sequence transformer can penetrate through the through hole to be arranged in the first cavity, so that the whole zero sequence transformer can be arranged among the three cavities in a spanning manner, for the circuit breaker product with the leakage protection function, the internal structure of the circuit breaker can be more compact, the structural layout of the circuit breaker module and the leakage protection module inside the shell is convenient, therefore, the whole volume of the circuit breaker is reduced (especially, the width of a circuit breaker product can be made narrower), and in addition, the size of the zero sequence transformer can be made larger, so that the sensitivity of the leakage protection can be improved.
Further, the hole center of the zero sequence transformer faces to a direction perpendicular to the assembling and splicing direction of the first shell member, the second shell member, the third shell member and the fourth shell member.
The technical scheme has the advantages that: because the axial width of the zero sequence transformer is generally narrow, the hole center of the zero sequence transformer faces to the direction perpendicular to the assembling and splicing direction of the first shell member, the second shell member, the third shell member and the fourth shell member (namely the width direction of the circuit breaker), so that more space can be made for the first cavity, the second cavity and the third cavity,
the diameter of the zero sequence transformer can be made larger, and therefore the sensitivity of leakage protection is improved.
Furthermore, the zero sequence transformer comprises a secondary winding, and the pocket groove is provided with a threading hole for the secondary winding to penetrate through between the second cavity and the third cavity.
The technical scheme has the advantages that: the threading arrangement of the secondary winding is convenient.
And the secondary winding penetrates through the threading hole and then is connected with the circuit board.
The technical scheme has the advantages that: the circuit board is arranged in the third cavity, so that the whole product is more compact in structure and more reasonable in internal layout, and meanwhile, the zero sequence transformer and the circuit board are closer to each other, and the secondary winding and the circuit board are convenient to connect in a wiring mode.
Further, the current-carrying component is used for carrying current in an N-phase mode and is formed by machining a hard metal plate, and the current-carrying component is arranged in the second cavity and penetrates through the hole center of the zero sequence transformer.
The technical scheme has the advantages that: adopt hard metal sheet machine-shaping's current-carrying part, can form better positioning effect to zero sequence transformer when its hole heart of wearing to locate zero sequence transformer, can keep inlaying the zero sequence transformer and inlay the dress in the pocket groove, be difficult to rock.
Further, the current-carrying component comprises a first connecting portion, a second connecting portion and a third connecting portion, the first connecting portion and the third connecting portion are connected to two ends of the second connecting portion, the second connecting portion penetrates through a hole center of the zero sequence transformer, and the first connecting portion and the third connecting portion are respectively matched with two axial sides of the zero sequence transformer to be limited.
The technical scheme has the advantages that: when the zero sequence transformer is sleeved on the second connecting part, the first connecting part and the third connecting part limit the two axial sides of the zero sequence transformer, so that the zero sequence transformer is not easy to fall off from the second connecting part, and the assembly is convenient.
Furthermore, an arc striking sheet is welded on the first connecting part.
The technical scheme has the advantages that: the striking piece is the component of explosion chamber, and the welding of striking piece can make current-carrying parts and striking piece's an organic whole nature stronger on first connecting portion, need not the wiring to reduce the volume of product internals, convenient assembly.
Further, the third connecting portion is a wiring board.
The technical scheme has the advantages that: the wiring board is a component of the wiring base, and the third connecting part adopts the wiring board, so that the integrity of the current-carrying part is stronger, wiring is not needed, the size of an internal component of a product is reduced, and assembly is facilitated.
Furthermore, the pocket groove comprises a circular arc-shaped inner concave wall matched with the outer contour of the zero sequence transformer.
The technical scheme has the advantages that: the positioning effect of the zero sequence transformer is improved, and the shaking of the zero sequence transformer is reduced.
Drawings
FIG. 1 is an assembly view of an embodiment of the present invention;
fig. 2 is an exploded view of an embodiment of the present invention;
FIG. 3 is an assembly view of one side of a second housing member in an embodiment of the invention;
FIG. 4 is an assembly view of the other side of the second housing member in an embodiment of the invention;
fig. 5 is an assembly view of the zero sequence transformer and the current carrying component in the embodiment of the present invention;
fig. 6 is an assembly view of a zero sequence transformer and a third housing member in an embodiment of the present invention;
fig. 7 is an assembly view of a circuit board in an embodiment of the present invention;
fig. 8 is a partial cross-sectional view of an embodiment of the present invention.
Detailed Description
The utility model discloses leakage protection circuit breaker's zero sequence transformer mounting structure's embodiment is shown in FIGS. 1-8: the circuit breaker comprises a first shell member 11, a second shell member 12, a third shell member 13 and a fourth shell member 14 which are assembled and spliced in sequence, wherein a first cavity 21 is formed between the first shell member 11 and the second shell member 12 in a connecting manner, a second cavity 22 is formed between the second shell member 12 and the third shell member 13 in a connecting manner, a third cavity 23 is formed between the third shell member 13 and the fourth shell member 14 in a connecting manner, the first cavity 21/the second cavity 22/the third cavity 23 can be used for accommodating a circuit breaker module/an electric leakage protection module, in the embodiment, the second shell member 12 and the third shell member 13 adopt a base structure style in a traditional circuit breaker product, and the first shell member 11 and the fourth shell member 14 adopt a cover plate structure style, namely, two sides of the circuit breaker product in the width direction of the embodiment are respectively formed by the first shell member 11, The fourth housing member 14. One side of the third housing member 13 facing the second cavity 22 is provided with a pocket groove 131, the back of the pocket groove 131 extends and protrudes toward the third cavity 23, so that the bottom of the pocket groove 131 is closer to the fourth housing member 14, the pocket groove 131 is embedded with the zero sequence transformer 3, the second housing member 12 is provided with a through hole 121 through which the zero sequence transformer 3 can penetrate, the zero sequence transformer 3 is simultaneously arranged in the first cavity 21 and the second cavity 22, and the zero sequence transformer 3 is preferably located at the middle position of the first housing member 11 and the fourth housing member 14.
The hole center orientation of the zero sequence transformer 3 is perpendicular to the assembling and splicing direction of the first shell component 11, the second shell component 12, the third shell component 13 and the fourth shell component 14, and the axial width of the zero sequence transformer 3 is generally narrow, so that the inner space of the cavity can be occupied as little as possible by adopting the design, and the utilization rate of the space is improved.
The zero sequence transformer 3 includes a secondary winding (not shown in the figure), and the pocket 131 is provided with a threading hole 132 through which the secondary winding can be inserted between the second cavity 22 and the third cavity 23. The zero sequence transformer mounting structure further comprises a circuit board 4 which is matched with the zero sequence transformer 3 and used for controlling the tripping coil to act, a control circuit which can convert the induced current of the secondary winding into a current signal and control the silicon controlled rectifier to work is integrated on the circuit board 4, the circuit board 4 is arranged in the third cavity 23, and the secondary winding is connected with the circuit board 4 after penetrating through the threading hole 132.
The zero sequence transformer mounting structure further comprises a current-carrying component 5 for N-phase current carrying, wherein the current-carrying component 5 is formed by machining a hard metal plate, and the current-carrying component 5 is arranged in the second cavity 22 and penetrates through the hole center of the zero sequence transformer 3. The current-carrying component 5 is used for carrying current of the earth leakage protection module, and certainly, in addition to the current-carrying component 5, at least one flexible conductor (not shown in the figure) for carrying current in the L phase penetrates through the hole center of the zero sequence transformer 3, and the flexible conductor can penetrate through the through hole 121 between the first cavity 21 and the second cavity 22, so that the circuit can be conveniently arranged in a penetrating manner.
As shown in fig. 5, the current-carrying component 5 includes a first connecting portion 51, a second connecting portion 52, and a third connecting portion 53, the first connecting portion 51 and the third connecting portion 53 are welded or integrally formed at two ends of the second connecting portion 52, the second connecting portion 52 is inserted into the hole of the zero sequence transformer 3, and the first connecting portion 51 and the third connecting portion 53 are respectively matched with two axial sides of the zero sequence transformer 3 for limiting. In this embodiment, the first connecting portion 51, the second connecting portion 52, and the third connecting portion 53 are integrally formed and are formed by bending the same metal plate, and the first connecting portion 51 and the third connecting portion 53 are bent toward the radial direction of the zero sequence transformer 3, so that the zero sequence transformer 3 can be limited, and meanwhile, the zero sequence transformer is also conveniently penetrated.
An arc striking piece 54 is welded on the first connecting part 51.
The third connection portion 53 is a wiring board.
The pocket 131 comprises a circular arc-shaped concave wall 132 matched with the outer contour of the zero sequence transformer 3.
The above embodiment is only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a zero sequence transformer mounting structure of earth leakage circuit breaker which characterized in that: including first housing element, second housing element, third housing element and the fourth housing element of equipment concatenation in proper order, it is formed with first cavity to connect between first housing element and the second housing element, connects between second housing element and the third housing element to be formed with the second cavity, connects between third housing element and the fourth housing element to be formed with the third cavity, its one side towards the second cavity of third housing element is provided with the pocket groove, the back in pocket groove extends the protrusion towards the third cavity direction, it is equipped with zero sequence transformer to inlay in the pocket groove, set up the through-hole that can supply zero sequence transformer to wear to establish on the second housing element, first cavity, second cavity are arranged in simultaneously to zero sequence transformer.
2. The zero sequence transformer mounting structure of a residual current circuit breaker according to claim 1, characterized in that: and the hole center of the zero sequence transformer faces to the direction vertical to the assembling and splicing directions of the first shell component, the second shell component, the third shell component and the fourth shell component.
3. The zero sequence transformer mounting structure of a residual current circuit breaker according to claim 1 or 2, characterized in that: the zero sequence transformer comprises a secondary winding, and the pocket groove is provided with a threading hole through which the secondary winding can penetrate between the second cavity and the third cavity.
4. The zero sequence transformer mounting structure of a residual current circuit breaker according to claim 3, characterized in that: the secondary winding is connected with the circuit board after penetrating through the threading hole.
5. The zero sequence transformer mounting structure of a residual current circuit breaker according to claim 1 or 4, characterized in that: the current-carrying component is formed by processing a hard metal plate, and is arranged in the second cavity and penetrates through the hole center of the zero sequence transformer.
6. The zero sequence transformer mounting structure of a residual current circuit breaker according to claim 5, characterized in that: the current-carrying component comprises a first connecting portion, a second connecting portion and a third connecting portion, the first connecting portion and the third connecting portion are connected to two ends of the second connecting portion, the second connecting portion penetrates through a hole center of the zero sequence transformer, and the first connecting portion and the third connecting portion are matched with two axial sides of the zero sequence transformer respectively and are limited.
7. The zero sequence transformer mounting structure of a residual current circuit breaker according to claim 6, characterized in that: the first connecting portion is welded with an arc striking sheet.
8. The zero sequence transformer mounting structure of a residual current circuit breaker according to claim 6 or 7, characterized in that: the third connecting portion is a wiring board.
9. The zero sequence transformer mounting structure of a residual current circuit breaker according to claim 3, characterized in that: the pocket groove comprises a circular arc-shaped inner concave wall matched with the outer contour of the zero sequence transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021061380.7U CN212380376U (en) | 2020-06-10 | 2020-06-10 | Zero sequence transformer mounting structure of leakage protection circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021061380.7U CN212380376U (en) | 2020-06-10 | 2020-06-10 | Zero sequence transformer mounting structure of leakage protection circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212380376U true CN212380376U (en) | 2021-01-19 |
Family
ID=74162709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021061380.7U Expired - Fee Related CN212380376U (en) | 2020-06-10 | 2020-06-10 | Zero sequence transformer mounting structure of leakage protection circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212380376U (en) |
-
2020
- 2020-06-10 CN CN202021061380.7U patent/CN212380376U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210119 |