CN204130334U - Cable-type current transformer - Google Patents
Cable-type current transformer Download PDFInfo
- Publication number
- CN204130334U CN204130334U CN201420266075.XU CN201420266075U CN204130334U CN 204130334 U CN204130334 U CN 204130334U CN 201420266075 U CN201420266075 U CN 201420266075U CN 204130334 U CN204130334 U CN 204130334U
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- Prior art keywords
- semi
- circular
- iron core
- coil
- cable
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000007246 mechanism Effects 0.000 claims abstract description 56
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000004804 winding Methods 0.000 claims abstract description 16
- 238000003032 molecular docking Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 9
- 239000003643 water by type Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
A kind of cable-type current transformer, its circumferential body comprises the first half ring mechanisms of docking, the second half ring mechanisms and by the clip of two halves ring mechanism banding; The first half ring mechanisms comprise the first semi-circular shell, the first semi-circular metering iron core and the coil thereof be arranged in the first semi-circular shell; The second half ring mechanisms comprise the second semi-circular shell, the second semi-circular metering iron core and the coil thereof be arranged in the second semi-circular shell; Also comprise power iron core and coil thereof, the second semi-circular be arranged in the second semi-circular shell of the first semi-circular be arranged in the first semi-circular shell to power iron core and coil thereof and wiring board, first semi-circular is powered the power supply coil winding switching wiring board that coil that the coil of iron core and the second semi-circular power iron core is formed, the metering coil winding switching wiring board that the coil of the first semi-circular metering iron core and the coil of the second semi-circular metering iron core are formed.The utility model itself can provide power supply for detection line plate, and durable in use.
Description
Technical field
The utility model relates to electric-power metering, the fault detection device of power industry, is specifically related to a kind of cable-type current transformer.
Background technology
Traditional zero sequence current mutual inductor is all the product of closed type; the cable that oneself connects for two ends installs zero-sequenceprotection additional and bothers very much; can not install online, must cut off the electricity supply before installation, need one of cable to extract out and just can pierce into cable through instrument transformer or disconnection wiring.
In order to solve the problem, China CN103077817A application for a patent for invention discloses a kind of open-close type zero sequence current mutual inductor, it comprises base, be arranged on and base waters building body, described watering in building body is provided with annular core, described building body of watering comprises superposed first and waters building body and be positioned at second of bottom and water building body, and first waters building body and the second shape of watering building body is semicircle; First waters and is formed circular after building body and second waters building body docking, and described first waters on outer circumference surface that building body and second waters building body and be provided with bail, and described bail waters building body and second and waters building body and be connected by first.
Although the technical scheme of above-mentioned patent application can make instrument transformer in the mode of folding, be more easily installed on cable; But still there is following defect: can not provide power supply for the detection line plate coordinated, detection line plate needs separately to connect Power supply; In addition, the folding end of instrument transformer does not arrange hermetically-sealed construction, and first waters building body and the second butt end of watering the annular core of building body gets rusty easily, corrodes, and causes such instrument transformer to be unsuitable for running in the presence of a harsh environment, or when it uses in the presence of a harsh environment, life-span and function can be a greater impact.
Utility model content
The utility model provides a kind of cable-type current transformer, and itself can provide power supply for detection line plate, and durable in use.The purpose of this utility model is realized by following technical scheme:
A kind of cable-type current transformer, comprises circumferential body, and circumferential body comprises the first half ring mechanisms of docking, the second half ring mechanisms and by the clip of two halves ring mechanism banding; The first half ring mechanisms comprise the first semi-circular shell, the first semi-circular metering iron core and the coil thereof be arranged in the first semi-circular shell; The second half ring mechanisms comprise the second semi-circular shell, the second semi-circular metering iron core and the coil thereof be arranged in the second semi-circular shell; It is characterized in that, also comprise power iron core and coil thereof, the second semi-circular be arranged in the second semi-circular shell of the first semi-circular be arranged in the first semi-circular shell to power iron core and coil thereof and wiring board, first semi-circular is powered the power supply coil winding switching wiring board that coil that the coil of iron core and the second semi-circular power iron core is formed, the metering coil winding switching wiring board that the coil of the first semi-circular metering iron core and the coil of the second semi-circular metering iron core are formed.
As further technical scheme, above-mentioned cable-type current transformer also comprises cable hold-down mechanism, and on described first semi-circular shell, radial direction offers screw, and described cable hold-down mechanism comprises screw rod and briquetting; Screw rod is adjustably matched with in screw, and its one end is operating side, is positioned at the first semi-circular housing exterior, and the other end connects briquetting, is positioned at the centre bore of circumferential body.
As further technical scheme, above-mentioned cable-type current transformer also comprises sensor stand and temperature sensor, sensor stand is arranged in circumferential body, and set temperature transducer on sensor stand, sensor stand transducer is positioned on the center hole wall of circumferential body.
As further technical scheme, above-mentioned cable-type current transformer also comprises indicator light mechanism, indicator light mechanism comprises indicator light, light transmission screen and indicator light lead-in wire, light transmission screen is arranged on the opposite side outer wall of described second semi-circular shell, indicator light is dual-colored LED lamp, be arranged at inside light transmission screen, indicator light lead-in wire connects indicator light and described wiring board.
As further technical scheme, above-mentioned cable-type current transformer also comprises two groups of seals, and the first seal and the second seal are arranged at the periphery of two butt ends of the first semi-circular shell and the second semi-circular shell respectively.
As concrete technical scheme, described first seal and the second seal are silica gel sealing ring.
As concrete technical scheme, described first semi-circular measures iron core, the second semi-circular measures iron core, the first semi-circular powers iron core, the second semi-circular is powered, and iron core is silicon sheet core.
As concrete technical scheme, described clip comprises bent hoop bar and connects locking mechanism, and hoop bar is the steel bar of a bending, and hoop is located at the first half ring mechanisms of docking and the outer rim of the second half ring mechanisms, and its two ends connect by connecting locking mechanism.
As concrete technical scheme, the second semi-circular shell of described the second half ring mechanisms offers fairlead, and described wiring board is arranged in circumferential body, draws circumferential body outside by lead-out wire.
The cable-type current transformer that the utility model provides can be installed on cable in the mode of folding, it comprises is two complete mutual inductance windings, wherein a mutual inductance winding is responsible for detection line plate and is powered, another mutual inductance winding is responsible for electric current gauge check (size of current flow through in the cable through cable-type current transformer exports the electric current of corresponding proportion size), and two mutual inductance windings do not produce interference each other.In addition, by arranging sealing ring, by opening part (butt end) outer fringe seal, blocking and contacting with the external world, there is antirust, corrosion resistant feature; The cable hold-down mechanism arranged, can compress cable by regulating; Euphotic zone is equipped with dual-colored LED, and is with output plug, convenient connection detection line plate.
Accompanying drawing explanation
The main body stereogram of the cable-type current transformer that Fig. 1 provides for the utility model embodiment.
The main body side view of the cable-type current transformer that Fig. 2 provides for the utility model embodiment.
The organigram of the cable-type current transformer that Fig. 3 provides for the utility model embodiment.
Fig. 4 be in Fig. 3 A-A to schematic cross-section.
The local structure figure of indicator light mechanism in the cable-type current transformer that Fig. 5 provides for the utility model embodiment.
The cable-type current transformer that Fig. 6 provides for the utility model embodiment is in the schematic diagram of open mode.
The schematic diagram of seal in the cable-type current transformer that Fig. 7 provides for the utility model embodiment.
The cable-type current transformer that Fig. 8 provides for the utility model embodiment is in the schematic diagram of closure state.
Embodiment
Shown in composition graphs 1, Fig. 2 and Fig. 3, the zero sequence current mutual inductor 100 that the present embodiment provides comprises circumferential body 1 and lead-out wire.Circumferential body 1 comprises the first half ring mechanisms 10, the second half ring mechanism 20, first seal 31, second seals 32, clip 40, cable hold-down mechanism 50, sensor stand 60, transducer 70, indicator light mechanism 80 and wiring board (not shown).
Shown in composition graphs 4, the first half ring mechanism 10 comprises the first semi-circular shell 11, the first semi-circular be arranged in the first semi-circular shell 11 powers iron core 12 and coil, the first semi-circular metering iron core 13 and coil thereof.The second half ring mechanism 20 comprises the second semi-circular shell 21, the second semi-circular be arranged in the second semi-circular shell 21 powers iron core 22 and coil, the second semi-circular metering iron core 23 and coil thereof.First semi-circular shell 11 and the respective equal opening in two ends of the second semi-circular shell 21, during for docking, power iron core 12 and the second semi-circular of the first semi-circular powers that the respective two ends of iron core 22 are corresponding to closely cooperate, and during for docking, the first semi-circular metering iron core 13 is corresponding with the respective two ends of the second semi-circular metering iron core 23 closely cooperates, as which form two-way annular core very close to each other.This two-way closed-loop is made up of excellent silicon sheet core, and silicon sheet core has high initial permeability, low coercive force and very high maximum permeability; In addition, silicon sheet core low price, is equivalent to the 1/6-1/10 of permalloy price, but in the exposed corrosion that gets rusty easily in atmosphere.
Wiring board is connected with metering coil windings, coil windings of powering, indicator light mechanism 80, transducer 70 respectively; Wiring board is arranged at the second semi-circular shell 21, then carries out secondary embedding.Power supply coil windings can provide normal supply current for wiring board at low currents, and metering coil windings is quick on the draw to small area analysis, and two coil windings do not have the coupling of electricity, magnetic each other, do not interfere with each other, and ensure that the accurate of metering.Wiring board connects outside by lead-out wire.
Continue see Fig. 4, the first semi-circular power iron core 12 and the second semi-circular power power supply annular core and the first semi-circular metering iron core 13 that iron core 22 forms and the metering annular core that the second semi-circular metering iron core 23 forms be arranged at the first semi-circular shell 11 and and the second semi-circular shell 21 composition toroidal shell in side.The opposite side radial direction of the first semi-circular shell 11 offers screw, described cable hold-down mechanism 50 comprises screw rod 51 and briquetting 52, screw rod 51 is adjustably matched with in screw, its one end is operating side, be positioned at the first semi-circular shell 11 outside, the other end connects briquetting 52, is positioned at the centre bore of circumferential body 1.The opposite side inside of the second semi-circular shell 21 arranges sensor stand 60, sensor stand 60 is arranged transducer 70, and transducer 70 is temperature sensor, is positioned on the center hole wall of circumferential body 1, be used for detection streamer electric wire work time temperature.
Shown in composition graphs 5, indicator light mechanism 80 comprises indicator light 81, light transmission screen 82 and indicator light lead-in wire 83, and light transmission screen 82 is arranged on the opposite side outer wall of the second semi-circular shell 21, and indicator light 81 is dual-colored LED lamp, be arranged at inside light transmission screen 82, indicator light lead-in wire 83 connects indicator light 81 and wiring board.Indicator light lead-in wire 83 outsides are heat-shrink tube, and one end that indicator light lead-in wire 83 connects detection line plate is 3Y type connector.
Shown in composition graphs 6 and Fig. 7, the first seal 31, second seal 32 is arranged at the first semi-circular shell 11 and and two butt ends of the second semi-circular shell 21 respectively.The opening shape at the shape of the first seal 31, second seal 32 and the first semi-circular shell 111 and the respective two ends of the second semi-circular shell 121 mates, and coordinates and seals butt end periphery.First seal 31, second seal 32 is silica gel sealing ring, and it has blocked iron core opening part (i.e. described butt end) and has contacted with extraneous, antirust, corrosion-resistant, makes iron core opening part light non-corrosive, durable in use and do not affect normal function.
Shown in composition graphs 1 and Fig. 2, clip 40 comprises bent hoop bar 41 and connects locking mechanism 42, and hoop bar 41 is the steel bar of a bending, is arranged at the first half ring mechanisms 10 of docking and the outer rim of the second half ring mechanisms 20, and by both bandings, its two ends are locked by connecting locking mechanism 42 connection.After the first half ring mechanisms 10 and the second half ring mechanisms 20 are tightened by clip 15, power iron core 12 and the second semi-circular of first semi-circular powers that the respective two ends of iron core 22 are corresponding to closely cooperate, first semi-circular metering iron core 13 is corresponding with the respective two ends of the second semi-circular metering iron core 23 to closely cooperate, and defines two-way annular core very close to each other.
Second semi-circular shell 21 of the second half ring mechanisms 20 offers fairlead 215, after the data of metering coil windings induction are gathered by wiring board, is drawn from fairlead 215 by lead-out wire, wiring board is equipped with lead-out wire socket, conveniently connects lead-out wire.
The main points that this novel cable type current transformer makes: excellent electric property be ensured and will ensure that two pairs of iron core ports are adjacent to when locked clip device close simultaneously, and iron core port can not misplace after being adjacent to, now also to ensure that sealing ring seals all around; So adopt repeatedly fixing, respectively the method for casting resin to ensure that instrument transformer makes smooth.
Shown in composition graphs 6 and Fig. 8, the cable-type current transformer using method that the present embodiment provides is: can unclamp clip 40 during online assembling, the first half ring mechanisms 10 and the second half ring mechanisms 20 freely separate, then entangle cable 200, then lock the first half ring mechanisms 10 and the second half ring mechanisms 20 with clip 15; Then regulate cable hold-down mechanism 50, make screw rod 51 promote briquetting 52 and cable is compressed.
Above embodiment is only fully open and unrestricted the utility model, all based on creation purport of the present utility model, replacement without the equivalence techniques feature of creative work, should be considered as the scope that the application discloses.
Claims (9)
1. a cable-type current transformer, comprises circumferential body, and circumferential body comprises the first half ring mechanisms of docking, the second half ring mechanisms and by the clip of two halves ring mechanism banding; The first half ring mechanisms comprise the first semi-circular shell, the first semi-circular metering iron core and the coil thereof be arranged in the first semi-circular shell; The second half ring mechanisms comprise the second semi-circular shell, the second semi-circular metering iron core and the coil thereof be arranged in the second semi-circular shell; It is characterized in that, also comprise power iron core and coil thereof, the second semi-circular be arranged in the second semi-circular shell of the first semi-circular be arranged in the first semi-circular shell to power iron core and coil thereof and wiring board, first semi-circular is powered the power supply coil winding switching wiring board that coil that the coil of iron core and the second semi-circular power iron core is formed, the metering coil winding switching wiring board that the coil of the first semi-circular metering iron core and the coil of the second semi-circular metering iron core are formed.
2. cable-type current transformer according to claim 1, is characterized in that, also comprises cable hold-down mechanism, and on described first semi-circular shell, radial direction offers screw, and described cable hold-down mechanism comprises screw rod and briquetting; Screw rod is adjustably matched with in screw, and its one end is operating side, is positioned at the first semi-circular housing exterior, and the other end connects briquetting, is positioned at the centre bore of circumferential body.
3. cable-type current transformer according to claim 1 and 2, it is characterized in that, also comprise sensor stand and temperature sensor, sensor stand is arranged in circumferential body, set temperature transducer on sensor stand, sensor stand transducer is connected with described wiring board, and is positioned on the center hole wall of circumferential body.
4. cable-type current transformer according to claim 2, it is characterized in that, also comprise indicator light mechanism, indicator light mechanism comprises indicator light, light transmission screen and indicator light lead-in wire, light transmission screen is arranged on the opposite side outer wall of described second semi-circular shell, indicator light is dual-colored LED lamp, is arranged at inside light transmission screen, and indicator light lead-in wire connects indicator light and described wiring board.
5. cable-type current transformer according to claim 1 and 2, is characterized in that, also comprises two groups of seals, and the first seal and the second seal are arranged at the periphery of two butt ends of the first semi-circular shell and the second semi-circular shell respectively.
6. cable-type current transformer according to claim 5, is characterized in that, described first seal and the second seal are silica gel sealing ring.
7. cable-type current transformer according to claim 1 and 2, is characterized in that, described first semi-circular measures iron core, the second semi-circular measures iron core, the first semi-circular powers iron core, the second semi-circular is powered, and iron core is silicon sheet core.
8. cable-type current transformer according to claim 1 and 2, it is characterized in that, described clip comprises bent hoop bar and connects locking mechanism, hoop bar is the steel bar of a bending, hoop is located at the first half ring mechanisms of docking and the outer rim of the second half ring mechanisms, and its two ends connect by connecting locking mechanism.
9. cable-type current transformer according to claim 1 and 2, is characterized in that, the second semi-circular shell of described the second half ring mechanisms offers fairlead, and described wiring board is arranged in circumferential body, draws circumferential body outside by lead-out wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266075.XU CN204130334U (en) | 2014-05-22 | 2014-05-22 | Cable-type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266075.XU CN204130334U (en) | 2014-05-22 | 2014-05-22 | Cable-type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204130334U true CN204130334U (en) | 2015-01-28 |
Family
ID=52386665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420266075.XU Expired - Lifetime CN204130334U (en) | 2014-05-22 | 2014-05-22 | Cable-type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204130334U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140872A (en) * | 2015-09-16 | 2015-12-09 | 山东康威通信技术股份有限公司 | Armored protective layer monitoring terminal structure and mounting method thereof |
| CN108051666A (en) * | 2017-11-21 | 2018-05-18 | 北京智芯微电子科技有限公司 | Non-contact type signal gathers sensor and low pressure branch switch cabinet state monitoring apparatus |
| CN111554495A (en) * | 2020-04-26 | 2020-08-18 | 安徽华能集团电器有限公司 | National grid high-voltage current transformer |
| CN113970660A (en) * | 2021-09-21 | 2022-01-25 | 南京理工大学 | Open-close type annular PCB type pulse heavy current sensor |
-
2014
- 2014-05-22 CN CN201420266075.XU patent/CN204130334U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140872A (en) * | 2015-09-16 | 2015-12-09 | 山东康威通信技术股份有限公司 | Armored protective layer monitoring terminal structure and mounting method thereof |
| CN105140872B (en) * | 2015-09-16 | 2018-12-18 | 山东康威通信技术股份有限公司 | Armouring sheath monitors terminal structure and its installation method |
| CN108051666A (en) * | 2017-11-21 | 2018-05-18 | 北京智芯微电子科技有限公司 | Non-contact type signal gathers sensor and low pressure branch switch cabinet state monitoring apparatus |
| CN111554495A (en) * | 2020-04-26 | 2020-08-18 | 安徽华能集团电器有限公司 | National grid high-voltage current transformer |
| CN113970660A (en) * | 2021-09-21 | 2022-01-25 | 南京理工大学 | Open-close type annular PCB type pulse heavy current sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150128 |