CN114496510B - Anti direct current component transformer subassembly and instrument including it - Google Patents
Anti direct current component transformer subassembly and instrument including it Download PDFInfo
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- CN114496510B CN114496510B CN202210169968.1A CN202210169968A CN114496510B CN 114496510 B CN114496510 B CN 114496510B CN 202210169968 A CN202210169968 A CN 202210169968A CN 114496510 B CN114496510 B CN 114496510B
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- copper sheet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a DC component resistant transformer assembly, comprising: the ABC three-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex middle part, A-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, C-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, upward folding, flat folding, N-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, and voltage signal connectors are arranged on the ABC three-phase copper sheet and the N-phase copper sheet; the three anti-direct current component transformers are respectively arranged in the lower folded section of the A-phase copper sheet, the upper folded section of the B-phase copper sheet and the lower folded section of the C-phase copper sheet, the N-phase copper sheet is arranged on the left side of the A-phase copper sheet and spans the upper part of the left half part of the A-phase anti-direct current transformer, and the wire inlet ends and the wire outlet ends of the ABC three-phase copper sheet and the N-phase copper sheet are respectively provided with a wiring terminal.
Description
Technical Field
The invention relates to the technical field of direct current component resistance transformers, in particular to a direct current component resistance transformer assembly and an instrument comprising the same.
Background
The current new standard has higher and higher requirements on electric energy metering precision and anti-interference capability, the original common transformer for measurement needs to be replaced with the anti-direct current component transformer with higher precision and stronger anti-interference capability, and the anti-direct current component transformer is much larger than the common transformer, so that the volume of the updated instrument is enlarged, the required installation space is enlarged, the installation space of the existing instrument cannot be used for installing the updated instrument, the market competitiveness is weakened, and the hardware design difficulty is increased due to the space problem.
Disclosure of Invention
The invention provides an anti-direct-current component transformer assembly and an instrument comprising the same, aiming at the problems and the defects existing in the prior art.
The invention solves the technical problems by the following technical proposal:
the invention provides an anti-direct-current component transformer component which is characterized by comprising an A-phase copper sheet, a B-phase copper sheet, a C-phase copper sheet, an N-phase copper sheet, a first anti-direct-current component transformer, a second anti-direct-current component transformer and a third anti-direct-current component transformer;
the A-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex middle part, the A-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, upward folding and flat folding, the length of a second flat folding section of the A-phase copper sheet is larger than that of a first flat folding section, and a first voltage signal connector is arranged on the A-phase copper sheet;
the B-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex middle part, the B-phase copper sheet is formed by folding downwards, folding flatly, folding upwards, folding flatly, folding downwards, folding flatly, the length of a first flatly folding section of the B-phase copper sheet is longer than that of a second flatly folding section, and a second voltage signal connector is arranged on the B-phase copper sheet;
the C-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex middle part, the C-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, upward folding and flat folding, the length of a second flat folding section of the C-phase copper sheet is larger than that of the first flat folding section, and a third voltage signal connector is arranged on the C-phase copper sheet;
the N-phase copper sheet is formed by bending a straight strip-shaped copper sheet through upward folding, flat folding, downward folding and flat folding, and a fourth voltage signal connector is arranged on the N-phase copper sheet;
the A phase copper sheet, the B phase copper sheet and the C phase copper sheet are arranged from left to right, transformer accommodating spaces are formed around the lower folded section of the A phase copper sheet, the upper folded section of the B phase copper sheet and the lower folded section of the C phase copper sheet, the first DC component resistant transformer, the second DC component resistant transformer and the third DC component resistant transformer are respectively arranged in the lower folded section of the A phase copper sheet, the upper folded section of the B phase copper sheet and the lower folded section of the C phase copper sheet, the N phase copper sheet is arranged on the left side of the A phase copper sheet and spans the left half part of the A phase DC resistant transformer, an insulating sleeve is arranged on one section of the N phase copper sheet above the A phase DC resistant transformer, wiring terminals are respectively arranged at the wire inlet ends and the wire outlet ends of the A phase copper sheet, the B phase copper sheet, the C phase copper sheet and the N phase copper sheet, and the first DC component resistant transformer and the third DC component resistant transformer are arranged in a lying shape after being arranged.
Preferably, the external dimensions of the A-phase copper sheet, the B-phase copper sheet and the C-phase copper sheet are identical after being unfolded.
Preferably, the first anti-direct current component transformer, the second anti-direct current component transformer and the third anti-direct current component transformer are arranged and then are offset to the left relative to the wire inlet end and the wire outlet end of the copper sheet, so that the right side of the third anti-direct current component transformer is aligned with the right sides of the wire inlet end wiring terminal and the wire outlet end wiring terminal of the C-phase copper sheet, and the left side of the first anti-direct current component transformer is aligned with the left sides of the wire inlet end wiring terminal and the wire outlet end wiring terminal of the N-phase copper sheet.
Preferably, the lengths of the first upper folded section and the second upper folded section of the A-phase copper sheet are half of the lengths of the lower folded sections, the lengths of the first lower folded section and the second lower folded section of the B-phase copper sheet are half of the lengths of the upper folded sections, and the lengths of the first upper folded section and the second upper folded section of the C-phase copper sheet are half of the lengths of the lower folded sections, so that the wire inlet ends and the wire outlet ends of the A-phase copper sheet, the B-phase copper sheet and the C-phase copper sheet are on the same center plane.
The invention also provides an instrument which is characterized by comprising the anti-direct-current component transformer component, a measuring plate and a display plate, wherein the measuring plate, the display plate and the anti-direct-current component transformer component form an instrument hardware structure, and the measuring plate collects and measures voltage and current signals of the anti-direct-current component transformer component and displays the voltage and current signals on the display plate in a digital form.
Preferably, the measuring plate is a weak current part, the anti-direct current component transformer component is a strong current part, and the measuring plate and the anti-direct current component transformer component are designed with a safe distance d to meet the strong and weak current isolation requirement.
Preferably, the anti-direct current component transformer component is installed in the lower shell, the measuring plate and the display plate are sequentially placed at the top of the anti-direct current component transformer component, the upper shell is installed again to complete assembly, and the display screen of the display plate is embedded in the upper surface of the upper shell.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that:
the anti-direct-current component transformer component skillfully utilizes the bending form of the copper sheet to form a dislocation space, can be used for installing a large-size anti-direct-current component transformer, has high space utilization rate, is in flat-lying installation, can reduce the size of the component in the length-width-height direction, and has market competitiveness compared with the similar product under the same function; the device for preventing the direct current component transformer component can separate the strong current part from the weak current part, solves the problem of strong and weak circuit isolation, reduces the design difficulty and the material cost, ensures that the device has distinct structure layers, simple structure and safety and reliability; the external dimensions of the ABC phase copper sheets after being unfolded are identical, so that the ABC phase copper sheets can share a blanking die, and the die opening cost is saved; the lead-in end and the lead-out end of the anti-direct current component transformer component are in an up-down bilateral symmetry mode, so that the anti-direct current component transformer component can be horizontally and vertically turned and then vertically turned and installed after being horizontally turned, and the anti-direct current component transformer component has high installation freedom and is suitable for different design requirements.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIGS. 2 (a) - (b) are schematic diagrams of phase A copper sheets;
FIGS. 3 (a) - (B) are schematic diagrams of phase B copper flakes;
FIGS. 4 (a) - (b) are schematic diagrams of C-phase copper flakes;
FIG. 5 is a schematic view of an N-phase copper sheet;
FIG. 6 is a schematic diagram showing the development and comparison of ABC phase copper sheets;
fig. 7 (a) - (d) are schematic diagrams of assembly of the dc-resistant component transformer assembly;
FIGS. 8 (a) - (b) are schematic diagrams of the spatial layout and dimensions of the DC-resistant component transformer;
FIG. 9 is a schematic diagram of the relative positions of an instrument circuit board and an anti-DC component transformer assembly;
FIG. 10 is a schematic diagram of the distance between the instrument weak current circuit board and the DC component resistant transformer assembly;
fig. 11 (a) - (c) are device assembly cases using such dc-resistant component transformer assemblies;
FIG. 12 is a schematic view of an inlet end and an outlet end of an ABC phase copper sheet on the same center plane;
fig. 13 (a) - (d) are schematic diagrams of various mounting arrangements of the dc-resistant component transformer assembly within the meter.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the present invention provides an anti-dc component transformer assembly, which includes an a-phase copper sheet 1, a B-phase copper sheet 2, a C-phase copper sheet 3, an N-phase copper sheet 4, an anti-dc component transformer 501, an anti-dc component transformer 502, and an anti-dc component transformer 503.
As shown in fig. 2 (a), the a-phase copper sheet 1 is unfolded into a strip-shaped copper sheet with a left convex 1h in the middle part, and as shown in fig. 2 (b), the a-phase copper sheet 1 is formed by bending an upper fold 1 a-flat fold 1 b-lower fold 1 c-flat fold 1 d-upper fold 1 e-flat fold 1f, the length of the flat fold 1d section of the a-phase copper sheet 1 is longer than that of the flat fold 1b section, and a voltage signal connector 1g is arranged on the a-phase copper sheet 1.
As shown in fig. 3 (a), the B-phase copper sheet 2 is unfolded into a strip-shaped copper sheet with a left convex 2h in the middle part, and as shown in fig. 3 (B), the B-phase copper sheet 2 is formed by bending a lower-folded 2 a-flat-folded 2B-upper-folded 2 c-flat-folded 2 d-lower-folded 2 e-flat-folded 2f, the length of the flat-folded 2B section of the B-phase copper sheet is greater than that of the flat-folded 2d section, and a voltage signal connector 2g is arranged on the B-phase copper sheet 2.
As shown in fig. 4 (a), the C-phase copper sheet 3 is unfolded into a strip-shaped copper sheet with a left convex 3h in the middle part, and as shown in fig. 4 (b), the C-phase copper sheet 3 is formed by bending an upward fold 3 a-flat fold 3 b-downward fold 3C-flat fold 3 d-upward fold 3 e-flat fold 3f, the length of the flat fold 3d section of the C-phase copper sheet 3 is greater than that of the flat fold 3b section, and a voltage signal connector 3g is arranged on the C-phase copper sheet 3.
Combining 2 (a) - (b), it can be seen that the A phase copper flakes are identical to the C phase copper flakes.
As shown in fig. 5, the N-phase copper sheet 4 is formed by bending a straight strip-shaped copper sheet through an upper fold 4 a-flat fold 4 b-lower fold 4 c-flat fold 4d, and a voltage signal connector 4e is arranged on the N-phase copper sheet 4.
As shown in fig. 6, the external dimensions of the a-phase copper sheet 1, the B-phase copper sheet 2 and the C-phase copper sheet 3 are identical after being unfolded, so that the blanking die can be shared, and the die opening cost is saved.
When the ABC three-phase copper sheets are arranged from left to right, as shown in fig. 7 (a), a transformer accommodating space is formed around the folded-down 1C section of the a-phase copper sheet, the folded-up 2C section of the B-phase copper sheet and the folded-down 3C section of the C-phase copper sheet, as shown in fig. 7 (B), 3 dc component resistant transformers 501, 502 and 503 are respectively installed into the folded-down 1C section of the a-phase copper sheet, the folded-up 2C section of the B-phase copper sheet and the folded-down 3C section of the C-phase copper sheet, as shown in fig. 7 (C), the N-phase copper sheet 4 is installed on the left side of the a-phase copper sheet 1 and spans over the left half portion of the a-phase dc resistant transformer 501, as shown in fig. 7 (d), the N-phase copper sheet 4 is provided with an insulating sleeve 401 over the a-phase dc resistant transformer 501, and the wire inlet ends and outlet ends of the a-phase copper sheets 1, B-phase copper sheet 2, C-phase copper sheet 3 and N-phase copper sheet 4 are respectively installed with connection terminals 601-608.
As shown in fig. 8 (a) - (B), 3 dc-resistant component transformers 501, 502, 503 are respectively installed into a lower folded 1C section of an a-phase copper sheet, an upper folded 2C section of a B-phase copper sheet, and a lower folded 3C section of a C-phase copper sheet, and because the flat folded 1d section of the a-phase copper sheet 1 is longer than the flat folded 1B section, the flat folded 2B section of the B-phase copper sheet is longer than the flat folded 2d section, the flat folded 3d section of the C-phase copper sheet 3 is longer than the flat folded 3B section, and the dc-resistant component transformers 501, 502, 503 are arranged in a lying delta shape after being installed; because the A-phase copper sheet 1, the B-phase copper sheet 2 and the C-phase copper sheet 3 are formed by bending left-convex strip-shaped copper sheets, the lower folded 1C section of the A-phase copper sheet, the upper folded 2C section of the B-phase copper sheet and the lower folded 3C section of the C-phase copper sheet are all left-convex sections, after the anti-direct current component transformers 501, 502 and 503 are installed, the left sides of the anti-direct current component transformers 503 are aligned with the right sides of the wire inlet terminal end 604 and the wire outlet terminal end 608 of the C-phase copper sheet, the left sides of the anti-direct current component transformers 501 are aligned with the left sides of the wire inlet terminal end 601 and the wire outlet terminal end 605 of the N-phase copper sheet, the space is fully utilized, the long and wide dimensions a and B can meet the requirements, and the height dimension is much smaller than the vertical installation due to the horizontal installation, and the height dimension C can also meet the design requirements.
As shown in fig. 9, the meter may be designed that the measuring board 7 and the display board 8 and the anti-direct current component transformer component 101 form a meter hardware structure, and the measuring board 7 collects and measures the voltage and current signals of the anti-direct current component transformer component 101 and displays the signals on the display board 8 in a digital form.
As shown in fig. 10, the measuring board 7 is a weak current part, the anti-dc component transformer assembly 101 is a strong current part, and the measuring board 7 and the anti-dc component transformer assembly 101 are designed with a safe distance d to meet the requirements of strong and weak current isolation.
As shown in fig. 11 (a) - (c), in the case of assembling the apparatus using the dc-resistant component transformer assembly, the dc-resistant component transformer assembly 101 is mounted in the lower case 10, the measuring board 7 and the display board 8 are sequentially placed on top of the dc-resistant component transformer assembly 101, and then the upper case 9 is mounted to complete the assembly, and the display screen of the display board 8 is embedded in the upper surface of the upper case 9.
As shown in fig. 12, the lengths of the upward folded section 1a and the upward folded section 1e of the a-phase copper sheet are half of the lengths of the downward folded section 1C, the lengths of the downward folded section 2a and the downward folded section 2e of the B-phase copper sheet are half of the lengths of the upward folded section 2C, and the lengths of the upward folded section 3a and the upward folded section 3e of the C-phase copper sheet are half of the lengths of the downward folded section 3C, so that the wire inlet ends and the wire outlet ends of the a-phase copper sheet 1, the B-phase copper sheet 2 and the C-phase copper sheet 3 are on the same center plane.
Fig. 13 (a) - (d) are schematic diagrams of various installation modes of the anti-dc component transformer assembly in the instrument, and fig. 13 (a) - (d) are respectively normal installation, horizontal overturn installation, vertical overturn installation, and vertical overturn installation after horizontal overturn.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (7)
1. The direct current component resistant transformer assembly is characterized by comprising an A-phase copper sheet, a B-phase copper sheet, a C-phase copper sheet, an N-phase copper sheet, a first direct current component resistant transformer, a second direct current component resistant transformer and a third direct current component resistant transformer;
the A-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex middle part, the A-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, upward folding and flat folding, the length of a second flat folding section of the A-phase copper sheet is larger than that of a first flat folding section, and a first voltage signal connector is arranged on the A-phase copper sheet;
the B-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex middle part, the B-phase copper sheet is formed by folding downwards, folding flatly, folding upwards, folding flatly, folding downwards, folding flatly, the length of a first flatly folding section of the B-phase copper sheet is longer than that of a second flatly folding section, and a second voltage signal connector is arranged on the B-phase copper sheet;
the C-phase copper sheet is unfolded into a strip-shaped copper sheet with a left convex middle part, the C-phase copper sheet is formed by upward folding, flat folding, downward folding, flat folding, upward folding and flat folding, the length of a second flat folding section of the C-phase copper sheet is larger than that of the first flat folding section, and a third voltage signal connector is arranged on the C-phase copper sheet;
the N-phase copper sheet is formed by bending a straight strip-shaped copper sheet through upward folding, flat folding, downward folding and flat folding, and a fourth voltage signal connector is arranged on the N-phase copper sheet;
the A phase copper sheet, the B phase copper sheet and the C phase copper sheet are arranged from left to right, transformer accommodating spaces are formed around the lower folded section of the A phase copper sheet, the upper folded section of the B phase copper sheet and the lower folded section of the C phase copper sheet, the first DC component resistant transformer, the second DC component resistant transformer and the third DC component resistant transformer are respectively arranged in the lower folded section of the A phase copper sheet, the upper folded section of the B phase copper sheet and the lower folded section of the C phase copper sheet, the N phase copper sheet is arranged on the left side of the A phase copper sheet and spans the left half part of the A phase DC resistant transformer, an insulating sleeve is arranged on one section of the N phase copper sheet above the A phase DC resistant transformer, wiring terminals are respectively arranged at the wire inlet ends and the wire outlet ends of the A phase copper sheet, the B phase copper sheet, the C phase copper sheet and the N phase copper sheet, and the first DC component resistant transformer and the third DC component resistant transformer are arranged in a lying shape after being arranged.
2. The anti-dc component transformer assembly of claim 1, wherein the a-phase copper sheet, the B-phase copper sheet, and the C-phase copper sheet are identical in overall dimensions after being unfolded.
3. The anti-dc component transformer assembly of claim 1, wherein the first anti-dc component transformer, the second anti-dc component transformer, and the third anti-dc component transformer are mounted so as to be offset to the left relative to the inlet and outlet ends of the copper sheet in which they are located such that the right side of the third anti-dc component transformer is aligned with the right sides of the inlet and outlet terminals of the C-phase copper sheet, and the left side of the first anti-dc component transformer is aligned with the left sides of the inlet and outlet terminals of the N-phase copper sheet.
4. The dc-resistant component transformer assembly of claim 1, wherein the first upper fold and the second upper fold of the a-phase copper sheet are each half the length of the lower fold, the first lower fold and the second lower fold of the B-phase copper sheet are each half the length of the upper fold, and the first upper fold and the second upper fold of the C-phase copper sheet are each half the length of the lower fold, such that the inlet and outlet ends of the a-phase copper sheet, the B-phase copper sheet, and the C-phase copper sheet are on the same central plane.
5. A meter comprising the anti-dc component transformer assembly of any one of claims 1-4, further comprising a measurement board and a display board, the measurement board and display board and the anti-dc component transformer assembly forming a meter hardware structure, the measurement board collecting and measuring voltage and current signals of the anti-dc component transformer assembly, and digitally displaying the signals on the display board.
6. The instrument of claim 5, wherein the measurement plate is a weak current portion and the dc-resistant component transformer assembly is a strong current portion, and the measurement plate is a safe distance d from the dc-resistant component transformer assembly to meet the strong-weak current isolation requirement.
7. The instrument of claim 5, wherein the dc-resistant component transformer assembly is mounted in a lower case, the measuring board and the display board are sequentially disposed on top of the dc-resistant component transformer assembly, and the upper case is mounted to complete the assembly, and the display screen of the display board is embedded in the upper surface of the upper case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210169968.1A CN114496510B (en) | 2022-02-24 | 2022-02-24 | Anti direct current component transformer subassembly and instrument including it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210169968.1A CN114496510B (en) | 2022-02-24 | 2022-02-24 | Anti direct current component transformer subassembly and instrument including it |
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| Publication Number | Publication Date |
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| CN114496510A CN114496510A (en) | 2022-05-13 |
| CN114496510B true CN114496510B (en) | 2023-10-03 |
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| CN206460865U (en) * | 2017-02-27 | 2017-09-01 | 天水长开互感器制造有限公司 | A kind of Integral three-phase current transformer |
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| CN113707497A (en) * | 2021-08-25 | 2021-11-26 | 江苏斯菲尔电气股份有限公司 | Anti-direct-current component mutual inductor, magnetic latching relay assembly and electric energy metering equipment |
| WO2022025522A1 (en) * | 2020-07-31 | 2022-02-03 | 삼성전자 주식회사 | Antennas and electronic device comprising same |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013168568A (en) * | 2012-02-16 | 2013-08-29 | Denso Corp | Manufacturing method of rectangular coil and coil device |
| CN203103240U (en) * | 2013-01-25 | 2013-07-31 | 杭州乾龙电器有限公司 | Low caloric power electric leakage circuit breaker rear conductor assembly |
| CN206460865U (en) * | 2017-02-27 | 2017-09-01 | 天水长开互感器制造有限公司 | A kind of Integral three-phase current transformer |
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| WO2022025522A1 (en) * | 2020-07-31 | 2022-02-03 | 삼성전자 주식회사 | Antennas and electronic device comprising same |
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| CN114496510A (en) | 2022-05-13 |
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