CN204422629U - A kind of non-contact alternating current flow measuring apparatus - Google Patents
A kind of non-contact alternating current flow measuring apparatus Download PDFInfo
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- CN204422629U CN204422629U CN201420841772.3U CN201420841772U CN204422629U CN 204422629 U CN204422629 U CN 204422629U CN 201420841772 U CN201420841772 U CN 201420841772U CN 204422629 U CN204422629 U CN 204422629U
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- alternating current
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- 238000012545 processing Methods 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
A kind of non-contact alternating current flow measuring apparatus, it comprises measuring coil, signal processing circuit, display and insulation lifting arm, it is interior and parallel with tested hi-line that described measuring coil is encapsulated in resin-case, the top of described resin-case is fixed with distance rod, the upper end of distance rod is provided with the arc pallet corresponding with tested hi-line, the upper end of described insulation lifting arm is connected with resin-case, described display is fixed on insulation lifting arm, the input termination measuring coil of described signal processing circuit, exports termination display.Measuring coil is used as the sensor of alternating current by the utility model, because the location of measuring coil is simple, does not need operator near tested wire, therefore operates fool proof.The effect of distance rod is the distance making measuring coil and tested wire keep fixing, ensures the measuring accuracy of electric current.This device can Quick Measurement hi-line electric current, and easy to use, handling safety, is suitable for electrical overhaul librarian use.
Description
Technical field
The utility model relate to a kind of can the device of alternating current in Quick Measurement hi-line, belong to field of measuring technique.
Background technology
When carrying out electrical overhaul operation, usually to need when not disconnecting circuit the alternating current in direct metering circuit.At present, the portable instrument measuring alternating current is all generally clamp on amperemeter, and clamp on amperemeter is combined by straight-through current transformer and reometer.The iron core of straight-through current transformer makes pincer, when measuring electric current, pincerlike iron core is enclosed within tested wire, the primary winding of current transformer is just become through pincerlike tested wire unshakable in one's determination, wherein just in secondary coil, induce electric current by during electric current, utilize the reometer be connected with secondary coil just can measure the electric current of test line.
When using clamp on amperemeter to measure electric current, the pincer iron core of straight-through current transformer could must be enclosed within tested wire near tested wire by operator, therefore this reometer is only applicable to the lower circuit of measuring voltage, if utilize the circuit that clamp on amperemeter measuring voltage is higher, be then easy to cause electric shock accidents.Therefore, how fast, the electric current of Measurement accuracy hi-line is a puzzlement relevant technologies personnel's difficult problem always.
Utility model content
The purpose of this utility model is the drawback for prior art, provides a kind of non-contact alternating current flow measuring apparatus of easy to use, handling safety.
Problem described in the utility model realizes with following technical proposals:
A kind of non-contact alternating current flow measuring apparatus, formation comprises measuring coil, signal processing circuit, display and insulation lifting arm, it is interior and parallel with tested hi-line that described measuring coil is encapsulated in resin-case, the top of described resin-case is fixed with distance rod, the upper end of described distance rod is provided with the arc pallet corresponding with tested hi-line, the upper end of described insulation lifting arm is connected with resin-case, described display is fixed on insulation lifting arm, the input termination measuring coil of described signal processing circuit, exports termination display.
Above-mentioned non-contact alternating current flow measuring apparatus, described signal processing circuit comprises single-chip microcomputer, wave filter, signal amplifier, triode and resistance, the output signal of measuring coil is connected to the base stage of triode successively through wave filter and signal amplifier, the collector of described triode connects positive source, emitter connects the input port of single-chip microcomputer and resistance grounded, and the output port of described single-chip microcomputer connects display.
Above-mentioned non-contact alternating current flow measuring apparatus, the circuit board of described signal processing circuit is arranged in the cavity of resin-case inside of measuring coil.
Above-mentioned non-contact alternating current flow measuring apparatus, described resin-case is the right cylinder coaxial with measuring coil, and described distance rod arranges two, is separately fixed at the two ends of resin-case.
Above-mentioned non-contact alternating current flow measuring apparatus, described insulation lifting arm is expansion link.
Measuring coil is used as the sensor of alternating current by the utility model, owing to not containing iron core in measuring coil, there will not be the nonlinear problem that usual clamp on amperemeter occurs because iron core magnetic is saturated like that, therefore survey measurements is accurate, and its location is simple, do not need operator near tested wire, operate fool proof yet.The effect of distance rod is the distance making measuring coil and tested wire keep fixing, ensures the measuring accuracy of electric current.This device can Quick Measurement hi-line electric current, and decapacitation is measured outside the high pressure of more than 10KV, also can measure the power lead of below 10KV, its easy to use, handling safety, and the special standby electrical overhaul personnel temporary detecting that is suitable for uses.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is for being structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is A-A cut-open view;
Fig. 4 is for measuring electrical schematic diagram.
In figure, each label is: 1, hi-line, 2, distance rod, 3, insulation lifting arm, 4, arc pallet, 5, circuit board, 6, cover plate, 7, resin-case, U1, single-chip microcomputer, LB, wave filter, FD, signal amplifier, Q, triode, R, resistance, L, measuring coil, XS, display.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the utility model comprises distance rod 2, insulation lifting arm 3, arc pallet 4, resin-case 7, measuring coil L, display XS and signal processing circuit.Wherein, signal processing circuit comprises single-chip microcomputer U1, wave filter LB, signal amplifier FD, triode Q and resistance R.
The measuring coil L be encapsulated in resin-case 7 is the current sensor of this device, measuring coil L is encapsulated in after in resin-case 7, its structural parameters are very stable, owing to there is no iron core, there is not magnetic saturation phenomenon, therefore not only there is higher detection sensitivity, also there is very high functional reliability.In current measurement process, measuring coil L is positioned at the below of tested hi-line 1 and parallel with hi-line 1, when flowing through electric current in hi-line 1, the two ends of measuring coil L produce induced electromotive force, when distance one timing of measuring coil L and hi-line 1, this electromotive force increases with the increase of high-voltage conducting wires electric current, signal processing circuit calculates the current value of hi-line 1 according to the size of this electromotive force and the distance between measuring coil L and hi-line 1, and by display XS by information displaying out, read for operating personnel.In order to obtain enough measuring accuracy, measuring coil L must keep constant distance with hi-line 1, therefore a distance rod 2 is respectively set at resin-case 7 two ends of measuring coil L, the upper end of distance rod 2 is fixed with arc pallet 4, as long as hold in the palm in the bottom of hi-line 1 by the arc pallet 4 of two distance rod 2 upper ends, measuring coil L will keep fixing distance and parallel with hi-line 1 with hi-line 1.The length of distance rod 2 can be divided into different sizes according to the height of tested voltage, with the measurement gear that correspondence is different.
Signal processing circuit comprises single-chip microcomputer U1, wave filter LB, signal amplifier FD, triode Q and resistance R, single-chip microcomputer U1 adopts 80C51, the circuit board of signal processing circuit is arranged in the cavity in resin-case 7, both reduced the volume of whole device, signal processing circuit can also be prevented to be subject to environmental pollution.
The principle of work of signal processing circuit is as follows:
The signal that measuring coil L exports sends into signal amplifier FD after wave filter LB filtering, and this signal amplifies through signal amplifier FD and sends into single-chip microcomputer U1 after triode Q Shape correction.Single-chip microcomputer U1 calculates the current value of hi-line 1 according to the amplitude of this signal and the distance between measuring coil L and hi-line 1, and result of calculation is sent into display XS, and operator reads the current value recorded from display XS.
In order to ensure the safety of operator, operator should keep enough distances with display XS, and for making operator see reading clearly, display XS adopts the light-emitting diode display of high brightness.
Insulation lifting arm 3 adopts expansion link, is convenient to the hi-line measuring differing heights.
Claims (5)
1. a non-contact alternating current flow measuring apparatus, it is characterized in that, it comprises measuring coil (L), signal processing circuit, display (XS) and insulation lifting arm (3), it is interior and parallel with tested hi-line (1) that described measuring coil (L) is encapsulated in resin-case (7), the top of described resin-case (7) is fixed with distance rod (2), the upper end of described distance rod (2) is provided with the arc pallet (4) corresponding with tested hi-line (1), the upper end of described insulation lifting arm (3) is connected with resin-case (7), described display (XS) is fixed in insulation lifting arm (3), the input termination measuring coil (L) of described signal processing circuit, export termination display (XS).
2. a kind of non-contact alternating current flow measuring apparatus according to claim 1, it is characterized in that, described signal processing circuit comprises single-chip microcomputer (U1), wave filter (LB), signal amplifier (FD), triode (Q) and resistance (R), the output signal of measuring coil (L) is connected to the base stage of triode (Q) successively through wave filter (LB) and signal amplifier (FD), the collector of described triode (Q) connects positive source, emitter connect single-chip microcomputer (U1) input port and through resistance (R) ground connection, the output port of described single-chip microcomputer (U1) connects display (XS).
3. a kind of non-contact alternating current flow measuring apparatus according to claim 1 and 2, is characterized in that, the circuit board (5) of described signal processing circuit is arranged in the cavity of resin-case (7) inside of measuring coil (L).
4. a kind of non-contact alternating current flow measuring apparatus according to claim 3, it is characterized in that, described resin-case (7) is the right cylinder coaxial with measuring coil (L), and described distance rod (2) arranges two, is separately fixed at the two ends of resin-case (7).
5. a kind of non-contact alternating current flow measuring apparatus according to claim 4, is characterized in that, described insulation lifting arm (3) is expansion link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420841772.3U CN204422629U (en) | 2014-12-28 | 2014-12-28 | A kind of non-contact alternating current flow measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420841772.3U CN204422629U (en) | 2014-12-28 | 2014-12-28 | A kind of non-contact alternating current flow measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204422629U true CN204422629U (en) | 2015-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420841772.3U Withdrawn - After Issue CN204422629U (en) | 2014-12-28 | 2014-12-28 | A kind of non-contact alternating current flow measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204422629U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569546A (en) * | 2014-12-28 | 2015-04-29 | 国家电网公司 | High-voltage line current measuring device |
| CN108490235A (en) * | 2018-02-28 | 2018-09-04 | 安徽中电电气有限公司 | non-contact type current detection device |
-
2014
- 2014-12-28 CN CN201420841772.3U patent/CN204422629U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569546A (en) * | 2014-12-28 | 2015-04-29 | 国家电网公司 | High-voltage line current measuring device |
| CN104569546B (en) * | 2014-12-28 | 2018-04-10 | 国家电网公司 | A kind of high-voltage line current measuring device |
| CN108490235A (en) * | 2018-02-28 | 2018-09-04 | 安徽中电电气有限公司 | non-contact type current detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20180410 |
|
| AV01 | Patent right actively abandoned |