CN103048518A - Small type current clamp for checking of live line measurement scene - Google Patents
Small type current clamp for checking of live line measurement scene Download PDFInfo
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- CN103048518A CN103048518A CN2012105328583A CN201210532858A CN103048518A CN 103048518 A CN103048518 A CN 103048518A CN 2012105328583 A CN2012105328583 A CN 2012105328583A CN 201210532858 A CN201210532858 A CN 201210532858A CN 103048518 A CN103048518 A CN 103048518A
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- current clamp
- caliper
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- live line
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Abstract
The invention provides a small type current clamp for the checking of a live line measurement scene, wherein one end of a current clamp body is arranged in a clamp body jacket; the other end of the current clamp body stretches out of the clamp body jacket; a clamp body embedment is arranged at an out-stretching current clamp head; a clamp body sliding chute in the same direction with a clamp body is formed in the middle part of an out-stretching end of the current clamp body; the interior of the current clamp head is provided with a measurement magnetic core component which can move left and right along the clamp body sliding chute; and a dynamic magnetic arm and a static magnetic arm of the component are closed to form a closed magnetic circuit and are opened to cause the whole closed magnetic circuit to be disconnected. With the adoption of the small type current clamp for the checking of the live line measurement scene, the problem that due to large volume, the current clamp of the prior art is inapplicable for small operation space is solved; moreover, the working position of the measurement magnetic core component extends to the current clamp head from the interior of the current clamp body; in such a way, the length of a magnetic path in the current clamp body is decreased; under the premise of guaranteeing a proportion between the cross section of the magnetic path and the magnetic path length, the measurement precision of the current clamp is guaranteed; and therefore, the small type current clamp for the checking of the live line measurement scene is applicable for the field of various live line measurements.
Description
Technical field
The present invention relates to a kind of power measurement operation device, relate in particular to a kind of current clamp that is applied to live line measurement field-checking field.
Background technology
Be widely used a kind of current clamp at present in live line measurement field-checking field, this current clamp is a current transformer with folding characteristic of the magnetic circuit.Under the prerequisite of not taking current loop apart in the live line measurement scene, by opening the current clamp magnetic circuit, just can wrap into tested electric current line in the magnet loop of current clamp, behind the closed path pincers magnetic circuit, consist of a current transformer that detects this current return electric current, cooperate pertinent instruments, detect the electrical quantitys such as electric current, power, electric energy.
Yet, we find in actual application, because the actual field situation at live line measurement scene varies, and tested equipment-radian is installed such as the electric current line of the current return of the device such as electric energy meter is little, and irregular, and the current clamp volume under the prior art is all bigger than normal, because the operating space is little, existing current clamp can't penetrate the electric current line in operating process, make troubles to the site operation personnel, easily pull the electric current line when penetrating by force and cause the accident of current return open circuit, jeopardize power grid security, when serious even the accident that causes casualties.
So now need a kind of novel small current pincers, can tackle the various complex situations at present live line measurement scene, can effectively to the electric current line the little and irregular tested equipment of radian be installed and carry out live line measurement, and need safe and reliable.
Summary of the invention
In order to solve the existing variety of problems of current clamp under the prior art, the invention provides the small current pincers that a kind of live line measurement field-checking is used, current clamp structure by redesign, the various complex situations that can adapt to present live line measurement scene, can effectively to the electric current line the little and irregular tested equipment of radian be installed and carry out live line measurement, measuring accuracy is accurate and safe and reliable, and concrete scheme of the present invention is as described below:
The small current pincers that a kind of live line measurement field-checking is used comprise the current clamp caliper, it is characterized in that:
One end of described current clamp caliper is arranged in the caliper overcoat, and the other end of current clamp caliper stretches out the caliper overcoat, and the current clamp binding clip place that this stretches out is provided with the caliper embedding;
The middle part of the external part of described current clamp caliper has and the equidirectional caliper slideway of caliper;
The inside of described current clamp binding clip is provided with can be along the measurement core assembly of caliper slideway move left and right.
The purpose of design proposal is herein, small current that live line measurement field-checking of the present invention is used pincers have changed the winding space position of the secondary winding on the current clamp magnetic core (magnetic circuit) under the prior art, the working position of measuring core assembly is extended to binding clip by caliper inside, reduce the inner length of magnetic path of caliper, and then reduce the length of magnetic path of whole current clamp, after the length of magnetic path reduces, just can correspondingly reduce the magnetic circuit sectional area, under the prerequisite of the ratio that guarantees magnetic circuit sectional area and the length of magnetic path, just guaranteed the measuring accuracy of current clamp.
The small current pincers that a kind of live line measurement field-checking according to the present invention is used, it is characterized in that, described measurement core assembly comprises the measurement magnetic core that forms the closed loop magnetic circuit, magnetic core guide rod and push button, wherein, measure magnetic core and be divided into up and down two parts, but top is the moving magnetic arm of move left and right, the bottom is fixed magnetostatic arm, and an end of magnetic core guide rod is arranged on the end of the moving magnetic arm on top, the other end of magnetic core guide rod then is arranged in the caliper slideway of corresponding size with it, push button then is arranged on the top of moving magnetic arm, and push button drives moving magnetic arm and connected magnetic core guide rod horizontally slips at the caliper slideway by promoting, so that whole closed loop magnetic circuit disconnects or be closed.
The purpose of design proposal is herein, because the current clamp under the prior art is left-right open-close, the closed loop magnetic circuit disconnects when namely opening, the closed magnetic circuit that forms of closed loop magnetic circuit during merging, this design has caused it, and work space is excessive in use, can't tackle complicated narrow and small live line measurement environment, and the small current that live line measurement field-checking of the present invention is used pincers, driving before and after having adopted, as long as the position that the binding clip of current clamp caliper part can arrive just obtains closed loop magnetic circuit to be opened/closed, carry out the live line measurement operation.
The small current pincers that a kind of live line measurement field-checking according to the present invention is used, it is characterized in that, described moving magnetic arm and magnetostatic arm, the closed loop magnetic circuit of its formation is rectangle, it is specially, one end of moving magnetic arm is 135 ° of angles, and an end of magnetostatic arm is 45° angle, and when it merged in twos, its junction was magnetic circuit and opens and closes interface, namely moving magnetic arm and magnetostatic arm close up formation closed loop magnetic circuit, and opening is that whole closed loop magnetic circuit disconnects.
The small current pincers that use a kind of live line measurement field-checking of the present invention to use have obtained following beneficial effect:
1. the small current pincers used of a kind of live line measurement field-checking of the present invention, current clamp structure by redesign, changed the volume problem bigger than normal of the current clamp under the prior art, solved because the operating space is little, existing current clamp can't penetrate the electric current line in operating process, the problem of making troubles to the site operation personnel;
2. the small current pincers used of a kind of live line measurement field-checking of the present invention, changed the winding space position of the secondary winding on the current clamp magnetic core (magnetic circuit) under the prior art, the working position of measuring core assembly is extended to binding clip by caliper inside, reduce the inner length of magnetic path of caliper, and then reduce the length of magnetic path of whole current clamp, after the length of magnetic path reduces, just can correspondingly reduce the magnetic circuit sectional area, under the prerequisite of the ratio that guarantees magnetic circuit sectional area and the length of magnetic path, guaranteed the measuring accuracy of current clamp.
Description of drawings
Fig. 1 is the concrete structure synoptic diagram of the small current pincers used of a kind of live line measurement field-checking of the present invention;
Fig. 2 is the closed loop magnetic circuit off-state synoptic diagram of the small current pincers used of a kind of live line measurement field-checking of the present invention;
Fig. 3 is the concrete schematic appearance of the small current pincers used of a kind of live line measurement field-checking of the present invention.
Among the figure: 1-current clamp caliper, 1a-current clamp binding clip, 1b-caliper slideway, 2-caliper overcoat, the embedding of 3-caliper, A-measures core assembly, and A1-measures magnetic core, and A11-moves magnetic arm, the magnetostatic arm of A12-, A2-magnetic core guide rod, A3-push button.
Embodiment
The small current pincers of a kind of live line measurement field-checking of the present invention being used below in conjunction with drawings and Examples are further described.
Embodiment
Such as Fig. 1, Fig. 2 and shown in Figure 3, the small current pincers that a kind of live line measurement field-checking is used, one end of current clamp caliper 1 is arranged in the caliper overcoat 2, and the other end of current clamp caliper stretches out the caliper overcoat, and the current clamp binding clip 1a place that this stretches out is provided with caliper embedding 3;
The middle part of the external part of current clamp caliper 1 has and the equidirectional caliper slideway of caliper 1b;
The inside of current clamp binding clip 1a is provided with can be along the measurement core assembly A of caliper slideway move left and right.
Small current that live line measurement field-checking of the present invention is used pincers have changed the winding space position of the secondary winding on the current clamp magnetic core (magnetic circuit) under the prior art, the working position of measuring core assembly is extended to binding clip by caliper inside, reduce the inner length of magnetic path of caliper, and then reduce the length of magnetic path of whole current clamp, after the length of magnetic path reduces, just can correspondingly reduce the magnetic circuit sectional area, under the prerequisite of the ratio that guarantees magnetic circuit sectional area and the length of magnetic path, just guaranteed the measuring accuracy of current clamp.
Measure core assembly A and comprise the measurement magnetic core A1 that forms the closed loop magnetic circuit, magnetic core guide rod A2 and push button A3, wherein, measure magnetic core and be divided into up and down two parts, but top is the moving magnetic arm A11 of move left and right, the bottom is fixed magnetostatic arm A12, and an end of magnetic core guide rod is arranged on the end of the moving magnetic arm on top, the other end of magnetic core guide rod then is arranged in the caliper slideway of corresponding size with it, push button then is arranged on the top of moving magnetic arm, push button drives moving magnetic arm and connected magnetic core guide rod horizontally slips at the caliper slideway by promoting, so that whole closed loop magnetic circuit disconnects or be closed.
Because the current clamp under the prior art is left-right open-close, the closed loop magnetic circuit disconnects when namely opening, the closed magnetic circuit that forms of closed loop magnetic circuit during merging, this design has caused it, and work space is excessive in use, can't tackle complicated narrow and small live line measurement environment, and the small current that live line measurement field-checking of the present invention is used pincers, driving before and after having adopted, as long as the position that the current clamp binding clip 1a of current clamp caliper 1 can arrive just can obtain closed loop magnetic circuit to be opened/closed, carry out the live line measurement operation.
As depicted in figs. 1 and 2, measure moving magnetic arm A11 and the magnetostatic arm A12 of magnetic core A1, the closed loop magnetic circuit of its formation is rectangle, it is specially, and an end of moving magnetic arm is 135 ° of angles, and an end of magnetostatic arm is 45° angle, when it merges in twos, its junction is magnetic circuit and opens and closes interface, and namely moving magnetic arm and magnetostatic arm close up formation closed loop magnetic circuit, and opening is that whole closed loop magnetic circuit disconnects.
The small current pincers that a kind of live line measurement field-checking of the present invention is used, current clamp structure by redesign, changed the volume problem bigger than normal of the current clamp under the prior art, solved because the operating space is little, existing current clamp can't penetrate the electric current line in operating process, the problem of making troubles to the site operation personnel.And a kind of live line measurement field-checking of the present invention small current pincers of using have changed the winding space position of the secondary winding on the current clamp magnetic core (magnetic circuit) under the prior art, the working position of measuring core assembly is extended to binding clip by caliper inside, reduce the inner length of magnetic path of caliper, and then reduce the length of magnetic path of whole current clamp, after the length of magnetic path reduces, just can correspondingly reduce the magnetic circuit sectional area, under the prerequisite of the ratio that guarantees magnetic circuit sectional area and the length of magnetic path, guaranteed the measuring accuracy of current clamp, the small current pincers that a kind of live line measurement field-checking of the present invention is used are applicable to various live line measurements field.
Claims (3)
1. the small current pincers that the live line measurement field-checking is used comprise current clamp caliper (1), it is characterized in that:
One end of described current clamp caliper (1) is arranged in the caliper overcoat (2), and the other end of current clamp caliper stretches out the caliper overcoat, and the current clamp binding clip (1a) that this stretches out locates to be provided with caliper embedding (3);
The middle part of the external part of described current clamp caliper (1) has and the equidirectional caliper slideway of caliper (1b);
The inside of described current clamp binding clip (1a) is provided with can be along the measurement core assembly (A) of caliper slideway (1b) move left and right.
2. the small current pincers used of a kind of live line measurement field-checking as claimed in claim 1, it is characterized in that, described measurement core assembly (A) comprises the measurement magnetic core (A1) that forms the closed loop magnetic circuit, magnetic core guide rod (A2) and push button (A3), wherein, measure magnetic core and be divided into up and down two parts, but top is the moving magnetic arm (A11) of move left and right, the bottom is fixed magnetostatic arm (A12), and an end of magnetic core guide rod is arranged on the end of the moving magnetic arm on top, the other end of magnetic core guide rod then is arranged in the caliper slideway (1b) of corresponding size with it, push button then is arranged on the top of moving magnetic arm, push button drives moving magnetic arm and connected magnetic core guide rod horizontally slips at the caliper slideway by promoting, so that whole closed loop magnetic circuit disconnects or be closed.
3. the small current pincers used of a kind of live line measurement field-checking as claimed in claim 2, it is characterized in that, described moving magnetic arm (A11) and magnetostatic arm (A12), the closed loop magnetic circuit of its formation is rectangle, it is specially, one end of moving magnetic arm is 135 ° of angles, and an end of magnetostatic arm is 45° angle, and when it merged in twos, its junction was that magnetic circuit opens and closes interface, namely moving magnetic arm and magnetostatic arm close up the rectangular closed loop magnetic circuit of formation, and it is that whole closed loop magnetic circuit disconnects that moving magnetic arm and magnetostatic arm are opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532858.3A CN103048518B (en) | 2012-12-11 | 2012-12-11 | A kind of small current pincers of live line measurement field-checking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532858.3A CN103048518B (en) | 2012-12-11 | 2012-12-11 | A kind of small current pincers of live line measurement field-checking |
Publications (2)
| Publication Number | Publication Date |
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| CN103048518A true CN103048518A (en) | 2013-04-17 |
| CN103048518B CN103048518B (en) | 2015-12-02 |
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| CN201210532858.3A Active CN103048518B (en) | 2012-12-11 | 2012-12-11 | A kind of small current pincers of live line measurement field-checking |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4283677A (en) * | 1979-05-18 | 1981-08-11 | Shoji Niwa | Clamp type galvanometer |
| CN2681143Y (en) * | 2004-01-07 | 2005-02-23 | 袁剑敏 | Multifunctional digital current measurement clamp meter |
| CN201116926Y (en) * | 2007-11-29 | 2008-09-17 | 王聚新 | Pincers-shaped fast electric larceny monitoring instrument |
| CN102012447A (en) * | 2010-10-12 | 2011-04-13 | 邢台供电公司 | Telescopic clip-on ammeter |
| JP2012112747A (en) * | 2010-11-24 | 2012-06-14 | Hioki Ee Corp | Clamp type measuring instrument and clamp sensor |
| CN202443057U (en) * | 2012-03-06 | 2012-09-19 | 任守华 | Pincers-shaped current sensor |
-
2012
- 2012-12-11 CN CN201210532858.3A patent/CN103048518B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4283677A (en) * | 1979-05-18 | 1981-08-11 | Shoji Niwa | Clamp type galvanometer |
| CN2681143Y (en) * | 2004-01-07 | 2005-02-23 | 袁剑敏 | Multifunctional digital current measurement clamp meter |
| CN201116926Y (en) * | 2007-11-29 | 2008-09-17 | 王聚新 | Pincers-shaped fast electric larceny monitoring instrument |
| CN102012447A (en) * | 2010-10-12 | 2011-04-13 | 邢台供电公司 | Telescopic clip-on ammeter |
| JP2012112747A (en) * | 2010-11-24 | 2012-06-14 | Hioki Ee Corp | Clamp type measuring instrument and clamp sensor |
| CN202443057U (en) * | 2012-03-06 | 2012-09-19 | 任守华 | Pincers-shaped current sensor |
Non-Patent Citations (1)
| Title |
|---|
| 佚名: "钳式传感器_德阳蜀电电力技术有限公司", 《德阳蜀电电力技术有限公司官方网站》 * |
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| CN103048518B (en) | 2015-12-02 |
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