CN203191433U - Current detection clamp - Google Patents
Current detection clamp Download PDFInfo
- Publication number
- CN203191433U CN203191433U CN 201320161683 CN201320161683U CN203191433U CN 203191433 U CN203191433 U CN 203191433U CN 201320161683 CN201320161683 CN 201320161683 CN 201320161683 U CN201320161683 U CN 201320161683U CN 203191433 U CN203191433 U CN 203191433U
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- CN
- China
- Prior art keywords
- binding clip
- described binding
- coil
- fixed end
- caliper
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- Expired - Lifetime
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Abstract
The utility model discloses a current detection clamp comprising a clamp body and a clamp head, which are connected together. A coil is disposed in the clamp head, and the coil adopts a hollow tubular-shaped structure formed by coiling a lead along a certain direction. Because an inner side of the coil is not provided with an iron core, the magnetic saturation phenomenon can be prevented, and the linear relation between the induction voltage output by the current detection clamp and the detected current can be guaranteed, and the problem of the conventional current transformer of the distortion of the linear relation between the induction voltage and the detected current during the output of the large current caused by the magnetic saturation phenomenon can be prevented.
Description
Technical field
The application relates to current measurement techniques, more particularly, relates to a kind of current detecting pincers.
Background technology
The ultimate principle of non-contact type current measurement mechanism is to use current sensor to obtain induction current, and the rear end sample circuit is extrapolated tested current value by measuring faradic intensity.Current sensor in the existing non-contact type current measurement mechanism mainly contains iron core+Hall element formula and iron core+coil type, and its common feature is: all use iron core that high-permeability materials such as silicon steel or permalloy make as the flux circuit of tested current field.
For the iron core of definite shape, volume, its ability that converges magnetic field is limited, has a ultimate value by magnetic flux wherein, namely the magnetic saturation phenomenon can occur; When magnetic field that tested electric current produces during less than this ultimate value, induced voltage and the tested electric current of current sensor output are linear; But work as the magnetic field intensity of tested electric current generation greater than this ultimate value, after the magnetic saturation phenomenon appears in iron core, magnetic field in the iron core no longer changes with the variation of tested current field, cause the induced voltage of sensor output and the linear relationship distortion of tested electric current, the induced voltage of current sensor output no longer reflects the size of actual tested electric current, and then causes using the current measuring device of this kind current sensor can't accurately measure electric current.
The utility model content
In view of this, the application provides a kind of current detecting pincers, with the problem of the linear relationship distortion of the induced voltage avoiding exporting when measuring big electric current and tested electric current.
To achieve these goals, the existing scheme that proposes is as follows:
A kind of current detecting pincers comprise: caliper and binding clip, wherein:
Be provided with at least one coil in the binding clip;
Coil is the hollow tubular structure that lead turns to by certain orientation.
Preferably, coil inside is provided with the non-magnetic supporter, and the non-magnetic supporter is tubulose or bar-shaped.
Preferably, binding clip is fixing bayonet socket,
Caliper is with fixedly bayonet socket side-walls or bottom are located to fixedly connected.
Preferably, fixedly the opening of bayonet socket is U-shaped or arc.
Preferably, binding clip comprises binding clip fixed end and binding clip moved end, wherein:
Be provided with coil in binding clip fixed end and the binding clip moved end;
The shape of binding clip fixed end and binding clip moved end is arc;
The oral area of binding clip moved end is relative with the oral area of binding clip fixed end, and binding clip moved end and binding clip fixed end form bayonet socket.
Preferably, binding clip moved end and binding clip fixed end are rotatably connected by rotating shaft, fixedly connected with caliper in the binding clip fixed end.
Preferably, binding clip moved end and caliper are rotatably connected by rotating shaft, fixedly connected with caliper in the binding clip fixed end.
Preferably, further comprise: spring;
One end of spring and binding clip fixed end or caliper are fixed, and the other end is connected with the binding clip moved end;
The binding clip moved end forms bayonet socket with the binding clip fixed end under the elastic force effect of spring.
From above-mentioned technical scheme as can be seen, the current detecting pincers use coil as current sensing elements among the application, there is not iron core in the coil, therefore the magnetic saturation phenomenon can not appear, the induced voltage of current detecting pincers output is linear with tested electric current all the time, has avoided the problem of the linear relationship distortion of induced voltage that existing current sensor exports when measuring electric current greatly because the magnetic saturation phenomenon is arranged and tested electric current.
And, existing current sensor is when carrying out big electric current (greater than 1000 amperes of AC value) measurement, the iron core of high magnetic permeability is easy to be geomagnetic into a magnet in magnetic field, under the effect of alternating magnetic fields power, can produce strong vibrations, tested electric current is more big, shakes more by force, can cause very big influence to equipment and personnel's safety, and the current detecting that the application provides pincers do not use iron core, have therefore avoided this problem.
Simultaneously, disclosed current detecting pincers do not use iron core among the application, can reduce manufacturing cost to a certain extent yet.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiment of the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The synoptic diagram that a kind of current detecting that Fig. 1 provides for the embodiment of the present application one clamps;
The synoptic diagram that a kind of current detecting that Fig. 2 provides for the embodiment of the present application two clamps;
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the application's protection.
Embodiment one
The synoptic diagram that a kind of current detecting that Fig. 1 provides for the embodiment of the present application one clamps;
As shown in Figure 1, this current detecting pincers comprise: coil 1, binding clip 2 and caliper 3.
In addition, supporter can select for use flexible materials such as plastics or rubber to make, and during making lead is wrapped on the supporter by certain orientation, and the supporter two ends can respectively arrange a bigger thrust, comes off from the supporter two ends to prevent lead.Using flexible material is that the straight shape coil that will make curves difformity easily as the benefit of supporter, with the needs of the current sensor that satisfies different profiles.
Binding clip 2 is generally made with insulating material, and inner hollow is to hold coil 1 and other spare and accessory parts.Its profile can be the U-shaped structure, comprising: oral area 201, sidewall 202, bottom 203.
A kind of semi-closed structure is formed on sidewall 202 and bottom 203, can tested lead 200 be placed in one by oral area 201, more tested lead 200 is shifted out after measurement finishes, and is very easy to use.
Fixed binding clip can be outside the U-shaped structure, arcuate structure, and notched oval structure or notched circular configuration, even can be notched rectangle.
The advantage of binding clip 2 is not have movable part, can not cause fault because of the frequent movement of movable part, survey crew need only protract fixed binding clip in use, tested lead 200 blocked both can begin to measure, it is comparatively convenient to use, because do other actions near noting be used in dangerous tested lead 200, reduced the danger of operation to a certain extent.
Embodiment two
A kind of current detecting pincers synoptic diagram that Fig. 2 provides for the embodiment of the present application two.
As shown in Figure 2 current detecting pincers comprise: caliper 3, the movable binding clip of being formed by binding clip fixed end 401 and binding clip moved end 402, wherein:
The induced voltage that is respectively arranged with 1 generation of 1, two coil of coil in binding clip fixed end 401 and the binding clip moved end 402 is superimposed and outwards outputs to subsequent process circuit; When being connected, these two coils should be noted that connected mode, be specially, two identical coils 1 of coiling direction are all placed perpendicular to desktop, be positioned at top one end and can be seen as stem, the other end is afterbody, the stem of one of them coil 1 is as an output terminal of coil groups during wiring, and afterbody is connected with the stem of another coil 1, and the afterbody of another coil 1 is as another output terminal of coil groups.
Binding clip fixed end 401 is a kind of convex structure with binding clip moved end 402, can relative motion form bayonet socket.
Binding clip fixed end 401 is fixed together by bolt 4011 and caliper 3, also can fix by rivet, or make an integral body during fabrication; Binding clip moved end 402 is connected by a rotating shaft 4022 with caliper 3, move binding clip moved end 402 during use and form a breach, from indentation, there tested lead 200 is inserted, then binding clip moved end 402 is moved to binding clip fixed end 401 and form the close-shaped measurement that begins, mobile binding clip moved end 402 again after measurement finishes, tested lead 200 is shifted out, finish measuring process.Binding clip moved end 402 is provided with handle 4021, can make binding clip moved end 402 4022 rotate the formation breach around the shaft by pressing handle 4021.
Binding clip moved end 402 can be arranged on the binding clip fixed end 401 by rotating shaft, and like this, binding clip fixed end 401 forms axle with binding clip moved end 402 and connects to form independent binding clip, and this binding clip can be connected with surveying instrument by lead, is applied to narrower and small measurement place; Can also be installed on the long handle by the binding clip that this is independent, it is reached the device interior that staff is difficult to arrive.
On movable binding clip spring or shell fragment can also be set, an end of spring or shell fragment is fixedlyed connected with caliper or binding clip fixed end, and the other end is connected with the binding clip moved end, and the elastic force of spring or shell fragment is pressed to the binding clip fixed end with binding clip moved end 402 and formed bayonet socket.
The benefit of movable binding clip is that its inner coil 1 can well surround tested lead 200, and the induced voltage signal of coil 1 output is higher, and subsequent conditioning circuit deals with and is easier to; Movable binding clip can vise tested lead 200 in addition, can be fixed on for a long time on the tested lead 200, has finished specific purposes.
The current measurement pincers that above embodiment provides can be applied in current measuring instrument instruments and meters or other controller switching equipments, directly show by pointer or display, and power supply power operating personnel monitor circuit; Perhaps be applied in the main equipment, finish circuit protection or other operations according to measured current value.
From above-mentioned technical scheme as can be seen, current detecting pincers among the application use coil as current sensing elements, there is not iron core in the coil 1, therefore the magnetic saturation phenomenon can not appear, the induced voltage of current measurement pincers output is linear with tested electric current all the time, has avoided the problem of the linear relationship distortion of induced voltage that existing current sensor exports when measuring electric current greatly because the magnetic saturation phenomenon is arranged and tested electric current.
And, existing current sensor is when carrying out big electric current (greater than 1000 amperes of AC value) measurement, the iron core of high magnetic permeability is easy to be geomagnetic into a magnet in magnetic field, under the effect of alternating magnetic fields power, can produce strong vibrations, tested electric current is more big, shakes more by force, can cause very big influence to equipment and personnel's safety, and the current detecting that the application provides pincers do not use iron core, have therefore avoided this problem.
Simultaneously, because the current measurement that the application provides pincers do not use iron core, also can reduce manufacturing cost to a certain extent.
At last, also need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the application.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation of the spirit or scope that do not break away from the application in other embodiments herein.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. current detecting pincers is characterized in that, comprising: caliper and binding clip, wherein:
Be provided with at least one coil in the described binding clip;
Described coil is the hollow tubular structure that lead turns to by certain orientation.
2. detection pincers as claimed in claim 1 is characterized in that described coil inside is provided with the non-magnetic supporter, and described non-magnetic supporter is tubulose or bar-shaped.
3. detection as claimed in claim 1 or 2 pincers is characterized in that, described binding clip is fixing bayonet socket,
Described caliper is fixedlyed connected with described fixedly bayonet socket side-walls or place, bottom.
4. detection pincers as claimed in claim 3 is characterized in that the opening of described fixedly bayonet socket is U-shaped or arc.
5. detection pincers as claimed in claim 1 or 2 is characterized in that described binding clip comprises binding clip fixed end and binding clip moved end, wherein:
Be provided with described coil in described binding clip fixed end and the described binding clip moved end;
The shape of described binding clip fixed end and described binding clip moved end is arc;
The oral area of described binding clip moved end is relative with the oral area of described binding clip fixed end, and described binding clip moved end and described binding clip fixed end form bayonet socket.
6. detection pincers as claimed in claim 5 is characterized in that described binding clip moved end and described binding clip fixed end are rotatably connected by rotating shaft, fixedly connected with described caliper in described binding clip fixed end.
7. detection pincers as claimed in claim 5 is characterized in that described binding clip moved end and described caliper are rotatably connected by rotating shaft, fixedly connected with described caliper in described binding clip fixed end.
8. as claim 6 or 7 described detection pincers, it is characterized in that, further comprise: spring;
One end of described spring and described binding clip fixed end or described caliper are fixed, and the other end is connected with described binding clip moved end;
Described binding clip moved end forms bayonet socket with described binding clip fixed end under the elastic force effect of described spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161683 CN203191433U (en) | 2013-04-02 | 2013-04-02 | Current detection clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161683 CN203191433U (en) | 2013-04-02 | 2013-04-02 | Current detection clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203191433U true CN203191433U (en) | 2013-09-11 |
Family
ID=49108285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320161683 Expired - Lifetime CN203191433U (en) | 2013-04-02 | 2013-04-02 | Current detection clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203191433U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866508A (en) * | 2016-04-28 | 2016-08-17 | 云南省计量测试技术研究院 | Online current testing clamp for flexible optical fiber |
| CN106771515A (en) * | 2016-11-29 | 2017-05-31 | 重庆长安秦川实业有限公司 | The overload detection method of multi-vehicle-type circuit 135% and system |
-
2013
- 2013-04-02 CN CN 201320161683 patent/CN203191433U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866508A (en) * | 2016-04-28 | 2016-08-17 | 云南省计量测试技术研究院 | Online current testing clamp for flexible optical fiber |
| CN105866508B (en) * | 2016-04-28 | 2018-09-18 | 云南省计量测试技术研究院 | The online testing current pincers of flexible optical fibre |
| CN106771515A (en) * | 2016-11-29 | 2017-05-31 | 重庆长安秦川实业有限公司 | The overload detection method of multi-vehicle-type circuit 135% and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 523000 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee after: UNI-TREND TECHNOLOGY (CHINA) Co.,Ltd. Address before: 523000 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee before: UNI-TREND TECHNOLOGY (CHINA) Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130911 |