CN206161700U - Open type luo shi coil - Google Patents
Open type luo shi coil Download PDFInfo
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- CN206161700U CN206161700U CN201621225465.8U CN201621225465U CN206161700U CN 206161700 U CN206161700 U CN 206161700U CN 201621225465 U CN201621225465 U CN 201621225465U CN 206161700 U CN206161700 U CN 206161700U
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Abstract
The utility model relates to an open type luo shi coil and application, including double -deck PCB board, every layer of PCB board comprises the half circle ring board of a pair of relative setting, is equipped with the clearance between relative two blocks of half circle ring boards that set up, be an interval insulating layer in the middle of the PCB board, these interval insulating layer both sides from inside to outside in proper order the symmetry set up conducting layer, interval insulating layer and shielding layer, the coil lay in the conducting layer, two shielding layers carry out electrical connection by the through -hole that sets up at two shielding layers of connection that are close to luo shi coil external diameter department, form faraday cage shield cover structure. The utility model discloses the luo shi coil has good anti -electromagnetic interference performance, and owing to together arrange shielding layer and coil on the PCB board, need not to increase extra shielding structure again, makes overall structure reduce, production simple manufacture, and the uniformity is good.
Description
Technical field
The utility model belongs to current measurement techniques field, and in particular to a kind of open type Rogowski coil, can be used for matching somebody with somebody
Line fault positioner.
Background technology
Luo-coil has measurement range width, and the linearity is good, simple structure, without open circuit risk the features such as, be suitable for electric power
The current parameters measurement of circuit.Open type and closed two kinds of structures are generally can be divided into, the Luo-coil of open type is installed, safeguarded
It is more convenient, it is suitable for applying occasion not easy-to-dismount in energized conductor.
Traditional open type Rogowski coil, is more uniformly wound on wire on the skeleton that nonmagnetic flexible material is constituted,
Outside is further added by shielding construction.But its certainty of measurement is affected by framework material and wire coiling.It is difficult to meet high-acruracy survey
Require, while needing outside extra shielding construction, its volume is larger so as to which installation brings certain difficulty.
Utility model content
The purpose of this utility model is to provide a kind of PCB Roche lines of the high-precision open formula for strong antijamming capability
Circle, to overcome above-mentioned difficulties.
The technical solution of the utility model is：A kind of open type Rogowski coil, including double-layer PCB board, every layer of pcb board is by one
Semi-circular shape plate to being oppositely arranged is constituted, and gap is provided between two for being oppositely arranged block semi-circular shape plate, in the middle of the pcb board
For a spacer insulator layer, the spacer insulator layer both sides are symmetrical arranged successively from inside to outside conductive layer, spacer insulator layer and screen layer,
Coil is laid in the conductive layer, two screen layers by the screen layer of connection two for being positioned close to Luo-coil outer radius through hole
It is electrically connected, is formed Faraday cage shield cover structure.
In a detailed embodiment, the one end open of a pair of semi-circular shape plates is normally opened opening, is set at normally opened opening
There is signal exit, the coil at a pair of semi-circular shape plate other ends is connected by shielding connecting line, and shielding connecting line simultaneously will
The screen layer of a pair of semi-circular shape plates is connected.
In a detailed embodiment, the coil of two-layer pcb board is connected by wire.
In a detailed embodiment, pcb board outermost layer is conductive layer, and the conductive layer is laid with shielding Copper Foil and constitutes institute
State screen layer.
In a detailed embodiment, the through hole hole wall is coated with metal level.
In a detailed embodiment, the through hole is uniformly distributed along the circumference.
In a detailed embodiment, the coil is included in the wire of two Conductive Layer Etch, and the wire of two-layer passes through
The buried via hole formation connection in two conductive layers is turned on, buried via hole hole wall is coated with metal level.
In a detailed embodiment, the wire coiling of two-layer is in opposite direction.
In a detailed embodiment, the through hole is disposed on adjacent buried via hole gap location.
The utility model due to using pcb board material as Luo-coil base material, PCB material has temperature stability good
Feature, it is not easy to deform, while by the way of digital control processing, coil is etched on Copper Foil, its coil arrangement is uniform, parameter one
Cause property is good, and Luo-coil of the present utility model is superior to traditional Luo-coil in terms of precision, uniformity, stability.
It is cascaded structure by two coils for being arranged in the conductive layer of polylith pcb board second and the 3rd, can increases hollow
The induction of signal intensity of coil, improves the sensitivity of Luo-coil.Meanwhile, two coils due to coil direction of winding conversely,
Impact of the magnetic field in vertical direction to single coil is cancelled out each other, therefore can eliminate the magnetic interference of vertical direction.
By the shielding Copper Foil for being arranged in the conductive layer of pcb board first and the 4th, two-layer Copper Foil is by Luo-coil outer ring
Conductive through hole is connected, and forms the shielding case structure of faraday electricity cage, by be laid in second and the 3rd conductive layer coil
In being wrapped in, because Copper Foil and through hole are conductor, extraneous electromagnetic interference is shielded, and is unlikely to affect Inside coil, from
And make Luo-coil obtain the performance of good electromagnetism interference.
And due to screen layer and coil are together arranged on pcb board, without the need for being further added by extra shielding construction, make entirety
Structure reduces, and manufactures simply, and uniformity is good.
Description of the drawings
Fig. 1 is the overall structure diagram of a specific embodiment of the utility model Luo-coil.
Fig. 2 is the pcb board cross-sectional view of Luo-coil.
Fig. 3 is Luo-coil connection diagram.
Wherein, the Luo-coil first half 1, Luo-coil lower half 2, top layer first half pcb board 11, bottom first half PCB
Plate 12, top layer lower half pcb board 21, bottom lower half pcb board 22, shielding connecting line 3, signal exit 4；
Luo-coil internal diameter R1, Luo-coil external diameter R2, through hole 5, the first conductive layer 61, the second conductive layer the 62, the 3rd are led
Electric layer 63, the 4th conductive layer 64, the first spacer insulator layer 71, the second spacer insulator layer 72, the 3rd spacer insulator layer 73, shielding copper
Paper tinsel 8, coil 9, buried via hole 10；
First half pcb board top layer coil head end 121, first half pcb board top layer coil tail end 122, lower half pcb board top layer
Coil head end 123, lower half pcb board top layer coil tail end 124, first half pcb board bottom coil head end 125, first half pcb board
Bottom coil tail end 126, lower half pcb board bottom coil head end 127, lower half pcb board bottom coil tail end 128；
The second conductive layer of top layer coil cabling 131, the conductive layer cabling 132 of top layer coil the 3rd, bottom coil second are conductive
Layer cabling 133, the conductive layer cabling 134 of bottom coil the 3rd.
Specific embodiment
" upper and lower, top, bottom " described in the utility model etc. be related to the word in orientation be only with reference to the accompanying drawings in orientation, the side of being
Just the relativity description for describing and adopting, different descriptive words of coil putting position should make corresponding adjustment.
Such as Fig. 1 ~ 3, the open type of the fault locator for distribution line of one specific embodiment of the utility model
Luo-coil, including the Luo-coil first half 1, Luo-coil lower half 2, and shielding connecting line 3 and signal exit 4.Sieve
Family name's coil first half 1 is a pair of semi-circular shape double-layer PCB boards with Luo-coil lower half 2, and the two is in be oppositely arranged（Mirror image pair
Claim）, between have certain interval constitute opening, one end be normally opened opening, this is normally opened by Luo-coil lower half 2 for signal exit 4
Draw at opening, be connected by shielding connecting line 3 at another end opening.
Top layer pcb board is identical with bottom pcb board structure, is stacked, in specular.That is, the Roche of the embodiment
Coil includes four pieces of semi-circular shape pcb boards.Fig. 2 is the sectional view of one of semi-circular shape pcb board.
The Luo-coil first half 1 is by the top layer first half pcb board 11 with screen layer and by the bottom with screen layer
The stacking composition of half portion pcb board 12.The top layer coil tail end 122 of first half pcb board and the bottom coil head end of first half pcb board
125 are connected.
Luo-coil lower half 2 is by the top layer lower half pcb board 21 with screen layer and by under the bottom with screen layer
The stacking composition of half portion pcb board 22.The top layer coil head end 123 of lower half pcb board and the bottom coil tail end of lower half pcb board
128 respectively connect a signal exit 4, constitute the output end of Luo-coil sampled signal.
Shielding connecting line 3 is respectively by the top layer coil head end 121 of first half pcb board and the pcb board top layer coil of lower half
Tail end 124 be connected, by the head end 127 of the bottom coil tail end 126 of first half pcb board and the pcb board bottom coil of lower half
It is connected, institute's Luo-coil first half screen layer is connected with the screen layer of lower half.
Constitute the pcb board of Luo-coil（Top/bottom, the first half/lower half）By four layers of conductive layer and three interlayers every
Insulating barrier is constituted.
First conductive layer 61 and the 4th conductive layer 64 are arranged with screen layer.In a specific embodiment, first is conductive
The conductive layer 64 of layer 61 and the 4th is laid with large area Copper Foil（Shielding Copper Foil 8）Screen layer is constituted, to shield external interference signal.Screen
Layer is covered by being positioned close to connection first conductive layer 61 of Luo-coil outer radius and the through hole 5 of the 4th conductive layer 64（Hole wall is plated
Copper）It is electrically connected.Through hole 5 is disposed on the gap location of adjacent buried via hole 10 along Luo-coil circumference uniform distribution, good to produce
Good shield effectiveness.
Second conductive layer 62 and the 3rd conductive layer 63 are laid with coil 9（It is circumferentially square by way of etching Copper Foil cabling
To uniform）, and by the buried via hole 10 turned in the second conductive layer 62 and the 3rd conductive layer 63（The each section of Copper Foil on conductive layer
The two ends of cabling, hole wall copper facing）Form connection.Coil 9 by the second conductive layer 62 and the 3rd conductive layer 63 Copper Foil cabling and bury
Hole 10 collectively forms.It is laid in top layer coil and the coiling of bottom coil of pcb board the second conductive layer 62 and the 3rd conductive layer 63
It is in opposite direction（As shown in Figure 3）.
Open type Rogowski coil of the present utility model by the top layer coil of the pcb board that is laid in and bottom coil detect through
The current signal that the conductor of hub of a spool flows through, generates a weak voltage signal for being proportional to primary current, is drawn by signal
Draw at end.
Claims (9)
1. a kind of open type Rogowski coil, including double-layer PCB board, every layer of pcb board by a pair of opposing semi-circular shape plate structure
Into being provided with gap between two for being oppositely arranged block semi-circular shape plate, it is characterised in that：It is a spacer insulator in the middle of the pcb board
Layer, the spacer insulator layer both sides are symmetrical arranged successively from inside to outside conductive layer, spacer insulator layer and screen layer, and coil is laid in institute
Conductive layer is stated, two screen layers are electrically connected by the through hole of the screen layer of connection two for being positioned close to Luo-coil outer radius
Connect, form Faraday cage shield cover structure.
2. open type Rogowski coil according to claim 1, it is characterised in that：The one end open of a pair of semi-circular shape plates is
Normally opened opening, is provided with signal exit at normally opened opening, the coil at a pair of semi-circular shape plate other ends is by shielding connecting line
It is connected, shielding connecting line is simultaneously connected the screen layer of a pair of semi-circular shape plates.
3. open type Rogowski coil according to claim 1 and 2, it is characterised in that：The coil of two-layer pcb board passes through wire
Connection.
4. open type Rogowski coil according to claim 1, it is characterised in that：Pcb board outermost layer be conductive layer, the conduction
Layer is laid with shielding Copper Foil and constitutes the screen layer.
5. the open type Rogowski coil according to claim 1 or 4, it is characterised in that：The through hole hole wall is coated with metal level.
6. the open type Rogowski coil according to claim 1 or 4, it is characterised in that：The through hole is uniformly distributed along the circumference.
7. the open type Rogowski coil according to claim 1 or 4, it is characterised in that：The coil is included in two conductive layers
The wire of etching, the wire of two-layer forms connection by the buried via hole turned in two conductive layers, and buried via hole hole wall is coated with metal level.
8. open type Rogowski coil according to claim 5, it is characterised in that：The wire coiling of two-layer is in opposite direction.
9. open type Rogowski coil according to claim 5, it is characterised in that：The through hole is disposed on adjacent buried via hole
Gap location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225465.8U CN206161700U (en) | 2016-11-15 | 2016-11-15 | Open type luo shi coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225465.8U CN206161700U (en) | 2016-11-15 | 2016-11-15 | Open type luo shi coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206161700U true CN206161700U (en) | 2017-05-10 |
Family
ID=58658864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621225465.8U Active CN206161700U (en) | 2016-11-15 | 2016-11-15 | Open type luo shi coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206161700U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370894A (en) * | 2016-11-15 | 2017-02-01 | 威胜电气有限公司 | Open type Rogowski wire coil and application thereof |
| CN109100558A (en) * | 2018-06-06 | 2018-12-28 | 中国电力科学研究院有限公司 | A kind of Rogowski coil and current measuring device |
-
2016
- 2016-11-15 CN CN201621225465.8U patent/CN206161700U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370894A (en) * | 2016-11-15 | 2017-02-01 | 威胜电气有限公司 | Open type Rogowski wire coil and application thereof |
| CN109100558A (en) * | 2018-06-06 | 2018-12-28 | 中国电力科学研究院有限公司 | A kind of Rogowski coil and current measuring device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 411201 28 Bai Shi Road, Jing Kai District, Xiangtan, Hunan Patentee after: Weisheng Energy Technology Co.,Ltd. Address before: 411201 28 Bai Shi Road, Jing Kai District, Xiangtan, Hunan Patentee before: WASION ELECTRIC Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |