CN104133104B - Novel telescopic type low-voltage tong-type ammeter - Google Patents
Novel telescopic type low-voltage tong-type ammeter Download PDFInfo
- Publication number
- CN104133104B CN104133104B CN201410396412.1A CN201410396412A CN104133104B CN 104133104 B CN104133104 B CN 104133104B CN 201410396412 A CN201410396412 A CN 201410396412A CN 104133104 B CN104133104 B CN 104133104B
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- shell
- fixed
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- roll
- expansion link
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- 238000009413 insulation Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The invention discloses a novel telescopic type tong-type ammeter. The tong-type ammeter comprises a shell and an insulation telescopic rod fixedly connected with the bottom of the shell, a data display instrument is arranged at the bottom of the telescopic rod, the data display instrument is connected with a straight-through current transformer in the shell through a connecting wire inside the telescopic rod, the shell is a closed annular body composed of a fixed shell body and a rotating shell body hinged to the fixed shell body, the fixed shell body is fixedly connected with the telescopic rod, a fixed coil is fixedly arranged on the inner wall of the fixed shell body, a rotating coil is fixedly arranged on the rotating shell body, and under the normal state, a closed annular coil is composed of the fixed coil and the rotating coil. The novel telescopic type tong-type ammeter is suitable for measuring load currents on the low-voltage side and a branch circuit of a transformer of a distribution transformation table area, and is safe, efficient and convenient to use.
Description
Technical field：
The present invention relates to a kind of novel retractable low pressure clamp on amperemeter, is mainly used in distribute-electricity transformer district transformer low voltage
Side, the measurement of branched line load current.
Background technology：
Distribution transformer low-pressure side size of current affects the service life of power supply quality and transformator, long-term electric current to cross conference
Transformator service life is shortened, the line end pressure drop of Shi Tai areas is excessive, supply voltage is unsatisfactory for requiring.Due to equipment fault, dislike
There are abnormal conditions in the reasons such as bad weather, the step down side electric current of power information acquisition system collection, and needs go to scene
Filling mining.Survey tool common in the market is clamp on amperemeter, it need not by after circuitry cuts by ammeter access into
Row measurement, its structure include electric current watch shell, can the jaw of folding, the current transformer that is arranged in housing and data display
Instrument, jaw is located at the top of housing, and the operation of jaw folding is located at housing side, and data display instrument is located at lower housing portion.In card
When surveying electric current, because the equipment installation site such as primary cable, distribution transformer is higher, tester's hand-held pincer after ascending a height is needed
Ammeter could be measured, and testing efficiency is low, and with live part close contact, it is dangerous.
The content of the invention：
To overcome the defect of prior art, it is an object of the invention to provide a kind of be applied to distribute-electricity transformer district transformer low voltage
When side, the measurement of branched line load current, safe and efficient and easy to use telescopic low pressure clamp on amperemeter.
The present invention solves technical problem and adopts the following technical scheme that：
Novel retractable low pressure clamp on amperemeter, it includes：Housing and it is fixed on the insulating telescopic of the housing bottom
Bar, the bottom of the expansion link is provided with data display instrument, and the data display instrument is by the connecting line inside expansion link and setting
Straight-through current transformer connection in the housing；
The housing is the closed annular body being made up of fixed shell and the roll-shell being hinged in fixed shell, described
Fixed shell is connected firmly with expansion link, and in the fixed shell inwall fixed coil is installed with, and is installed with the roll-shell and is turned
Moving winding, under normality, the fixed coil constitutes the loop coil of closure with rotating coil.
The overall u-shaped structure of the fixed shell and fixed coil, the roll-shell is with the fixed shell with pin
Axle is hinged, and torsion spring is provided with the bearing pin, two ends of the torsion spring be fitted in respectively the inwall of fixed shell and
The bottom surface of roll-shell.
The insulating telescopic bar is made up of the long 1.5 meters not isometrical insulating bar of three sections, and three save insulating bars diameter from top to bottom
Increase successively, upper section insulating bar is plugged on successively in lower section insulating bar and is locked by the screw being radially arranged on lower section insulating bar
It is fixed.
Compared with the prior art, beneficial effects of the present invention are embodied in：
1st, roll-shell and fixed shell are with hinge, and torsionspring is arranged on bearing pin, can make roll-shell
Pivoting simultaneously automatically resets, it is to avoid need to be gone to open jaw with handss in traditional clamp on amperemeter, more convenient to operate.
2nd, expansion link is made up of three section insulating bars, and two for being relatively large in diameter piece insulating bar near top opens two apertures and tapping,
The long screw of two model matchings of exterior, for adjustable telescopic rod length, realizes tester's long distance while easy to carry
From operation test instrunment, it is to avoid close contact live wire, falling from high altitude risk is reduced, it is safer, and by sky
Between limit.
3rd, expansion link inside connects data display instrument and straight-through current transformer by spring connecting line, and data are shown
Show that instrument is placed in expansion link bottom, facilitate reading and the record of data.
Description of the drawings：
Fig. 1 is novel retractable low pressure clamp on amperemeter structural representation；Fig. 2 is novel retractable low pressure clamp on amperemeter
Structure left view；Fig. 3 is the part of detecting structure sectional view of ammeter.
Label in figure：1 roll-shell, 2 fixed shells, 3 expansion links, 4 data display instrument, 5 current carrying conductors, 6 torsion springs, 7 consolidate
Alignment circle, 8 rotating coils.
Below by way of specific embodiment, and the invention will be further described to combine accompanying drawing.
Specific embodiment：
Embodiment：With reference to Fig. 1-3, the telescopic low pressure clamp on amperemeter of the present embodiment, it includes：Housing and it is fixed on
The insulating telescopic bar 3 of housing bottom, in the bottom of expansion link data display instrument 4 is provided with, and data display instrument 4 is by inside expansion link
Connecting line be connected with the straight-through current transformer being arranged in housing.
Housing is the closed annular body being made up of fixed shell 2 and the roll-shell being hinged in fixed shell 1, wherein,
Fixed shell 2 is connected firmly with expansion link, and in the inwall of fixed shell 2 fixed coil 7 is installed with, and on roll-shell 1 rotational line is installed with
Circle 8, under normality, fixed coil 7 and rotating coil 8 constitute the loop coil of closure, and the loop coil of closure constitutes described
Straight-through current transformer.
Fixed shell 2 and the overall u-shaped structure of fixed coil 7, the roll-shell 1 and fixed shell 2 of crossbar type is with pin
Axle is hinged, and torsion spring 6 is provided with bearing pin, and two ends of torsion spring are fitted in respectively the inwall and roll-shell of fixed shell
Bottom surface.Insulating telescopic bar is made up of the long 1.5 meters not isometrical insulating bar of three sections, and from top to bottom diameter increases successively three section insulating bars
Greatly, upper section insulating bar is plugged on successively in lower section insulating bar and is locked by the screw being radially arranged on lower section insulating bar.
When the electric current of distribute-electricity transformer district current carrying conductor 5 is measured, tester is adjusted to proper height expansion link 3, tightens
The set screw on the side of expansion link 3, the non-articulated end roll-shell 1 is that opening portion is directed at current carrying conductor 5, expansion link 3 of holding with a firm grip
Bottom is exerted oneself top pressure current carrying conductor 5, and roll-shell 1 is rotated around bearing pin, and torsion spring 6 is compressed, and current carrying conductor 5 smoothly enters punching
In current transformer, under the elastic force effect of torsion spring 6, roll-shell 1 resets, and makes the rotating coil 8 of straight-through current transformer
Loop coil with fixed coil 7 forms closure, is now displayed in measurement data and stretches by the inner spring type connecting line of expansion link 3
On the data display instrument 4 of the bottom of contracting bar 3, tester reads data and records；After the completion of test, the bottom of expansion link 3 is pulled at
End, current carrying conductor 5 will strut roll-shell 1 and depart from straight-through current transformer, while work of the roll-shell 1 in torsion spring 6
Lower reset is used, is completed.
Claims (2)
1. novel retractable low pressure clamp on amperemeter, it is characterised in that include：Housing and it is fixed on the exhausted of the housing bottom
Edge expansion link (3), the bottom of the expansion link is provided with data display instrument (4), and the data display instrument is by inside expansion link
Connecting line is connected with the straight-through current transformer being arranged in the housing；
The housing is the closed annular body being made up of fixed shell (2) and the roll-shell (1) being hinged in fixed shell, institute
State fixed shell (2) to connect firmly with expansion link, in the fixed shell (2) inwall fixed coil (7), the roll-shell are installed with
(1) rotating coil (8) is installed with, under normality, the fixed coil (7) constitutes the loop coil of closure with rotating coil (8)；
The fixed shell (2) and the overall u-shaped structure of fixed coil (7), the roll-shell (1) and the fixed shell
(2) with hinge, and torsion spring (6) is provided with the bearing pin, two ends of the torsion spring are fitted in respectively set casing
The inwall of body and the bottom surface of roll-shell.
2. novel retractable low pressure clamp on amperemeter according to claim 1, it is characterised in that the insulating telescopic bar by
The long 1.5 meters not isometrical insulating bar composition of three sections, from top to bottom diameter increases successively three section insulating bars, and upper section insulating bar is inserted successively
It is connected in lower section insulating bar and is locked by the screw being radially arranged on lower section insulating bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410396412.1A CN104133104B (en) | 2014-08-13 | 2014-08-13 | Novel telescopic type low-voltage tong-type ammeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410396412.1A CN104133104B (en) | 2014-08-13 | 2014-08-13 | Novel telescopic type low-voltage tong-type ammeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104133104A CN104133104A (en) | 2014-11-05 |
| CN104133104B true CN104133104B (en) | 2017-04-19 |
Family
ID=51805853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410396412.1A Expired - Fee Related CN104133104B (en) | 2014-08-13 | 2014-08-13 | Novel telescopic type low-voltage tong-type ammeter |
Country Status (1)
| Country | Link |
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| CN (1) | CN104133104B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569546B (en) * | 2014-12-28 | 2018-04-10 | 国家电网公司 | A kind of high-voltage line current measuring device |
| CN104931764A (en) * | 2015-06-24 | 2015-09-23 | 中山市木易万用仪器仪表有限公司 | Telescopic pincerlike ampere meter |
| CN105116284B (en) * | 2015-08-20 | 2018-02-06 | 苏州银蕨电力科技有限公司 | A kind of intelligent grid sensing device |
| CN105116179A (en) * | 2015-09-29 | 2015-12-02 | 国网浙江慈溪市供电公司 | Telescopic inspecting auxiliary device |
| CN106226561A (en) * | 2016-07-08 | 2016-12-14 | 国网福建省电力有限公司 | 500kV transformer station electrical test jointer combined complete and using method thereof |
| CN106405196A (en) * | 2016-11-08 | 2017-02-15 | 北京石油化工学院 | Mechanical clamping type high-voltage line load current telemetering instrument |
| CN108008156B (en) * | 2017-12-29 | 2020-01-07 | 国家电网公司 | Telescopic clamp-on ammeter |
| CN108931707A (en) * | 2018-07-09 | 2018-12-04 | 国网山东省电力公司莱芜供电公司 | A kind of portable power distribution line electrical leakage device for fast detecting |
| CN112540215A (en) * | 2020-11-26 | 2021-03-23 | 广东电网有限责任公司 | Electricity stealing evidence obtaining device and electricity stealing evidence obtaining method |
| CN113608010B (en) * | 2021-10-11 | 2022-03-22 | 广东电网有限责任公司惠州供电局 | Telescopic clip-on ammeter |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012447A (en) * | 2010-10-12 | 2011-04-13 | 邢台供电公司 | Telescopic clip-on ammeter |
| CN201804026U (en) * | 2010-10-12 | 2011-04-20 | 邢台供电公司 | Retractable pincer-like galvanometer |
| CN202230120U (en) * | 2011-08-09 | 2012-05-23 | 浙江大合建设工程检测有限公司 | Clip-on ammeter |
| CN202994885U (en) * | 2012-11-16 | 2013-06-12 | 宜阳县电业管理公司 | Telescopic tong-type ammeter |
| CN203164352U (en) * | 2013-04-07 | 2013-08-28 | 国家电网公司 | An electric leakage detecting device of a live low-voltage line |
| CN103592501A (en) * | 2013-11-27 | 2014-02-19 | 国家电网公司 | Low-voltage current measuring bar |
| CN203745527U (en) * | 2014-04-01 | 2014-07-30 | 尚英明 | Clip-on ammeter with load indicator especially for housing construction and management |
| CN203981754U (en) * | 2014-08-13 | 2014-12-03 | 国家电网公司 | Novel retractable low pressure clamp on amperemeter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012111285B3 (en) * | 2012-11-22 | 2014-02-13 | Turck Holding Gmbh | Signal isolator for isolating measuring signals, has auxiliary energy feeder connected in series with output and clamps of direct current to direct current converter, and measuring circuit measuring voltage lying at clamps |
-
2014
- 2014-08-13 CN CN201410396412.1A patent/CN104133104B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012447A (en) * | 2010-10-12 | 2011-04-13 | 邢台供电公司 | Telescopic clip-on ammeter |
| CN201804026U (en) * | 2010-10-12 | 2011-04-20 | 邢台供电公司 | Retractable pincer-like galvanometer |
| CN202230120U (en) * | 2011-08-09 | 2012-05-23 | 浙江大合建设工程检测有限公司 | Clip-on ammeter |
| CN202994885U (en) * | 2012-11-16 | 2013-06-12 | 宜阳县电业管理公司 | Telescopic tong-type ammeter |
| CN203164352U (en) * | 2013-04-07 | 2013-08-28 | 国家电网公司 | An electric leakage detecting device of a live low-voltage line |
| CN103592501A (en) * | 2013-11-27 | 2014-02-19 | 国家电网公司 | Low-voltage current measuring bar |
| CN203745527U (en) * | 2014-04-01 | 2014-07-30 | 尚英明 | Clip-on ammeter with load indicator especially for housing construction and management |
| CN203981754U (en) * | 2014-08-13 | 2014-12-03 | 国家电网公司 | Novel retractable low pressure clamp on amperemeter |
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| Publication number | Publication date |
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| CN104133104A (en) | 2014-11-05 |
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