CN207882333U - A kind of measuring device of dynamic electrode current - Google Patents
A kind of measuring device of dynamic electrode current Download PDFInfo
- Publication number
- CN207882333U CN207882333U CN201820351241.4U CN201820351241U CN207882333U CN 207882333 U CN207882333 U CN 207882333U CN 201820351241 U CN201820351241 U CN 201820351241U CN 207882333 U CN207882333 U CN 207882333U
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- current transformer
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Abstract
The utility model discloses a kind of measuring devices of dynamic electrode current, belong to transformer technology field, including transformer, wears the first current transformer of cable formula group, switching contact plate group, the second current transformer group and the third current transformer group positioned at measurement end.The utility model discloses a kind of measuring device of dynamic electrode current, each switching disk in switching contact plate group all has the contact plate for the 14 contacts composition being one another in series, winding in first current transformer group is contacted with corresponding contact plate, pass through the second current transformer group contacted with contact plate, then electric current in transformer is measured to obtain by the third current transformer group being correspondingly arranged with the second current transformer group, and the measurement of dynamic current may be implemented.In addition, the gear in contact plate has 14 grades, the secondary current extreme value for the transformer that can be measured substantially increases the range that can survey electric furnace electrode electric current up to more than 30,000 peaces.
Description
Technical field
The utility model is related to transformer technology fields, more particularly to a kind of measuring device of dynamic electrode current.
Background technology
Electric arc furnaces, mineral hot furnace and ladle furnace etc. are mainly used for smelting high-quality steel and steel alloy etc..And as furnace power
Furnace transformer is the heart of various electric furnaces.Therefore, the electric current in electric furnace is measured and monitored also just becomes guarantee white silk
One important prerequisite of steel quality.
Application No. is 201720028511.3 Chinese patents to disclose transformer secondary current testing device.However, should
Transformer in the current measuring device that patent discloses is coupled using Y d11, can not measure the transformer that D y11 are coupled
Electric current.In addition, the contact of the on-load voltage regulating switch in the current measuring device disclosed in the patent is to disconnect, it is unable to measure dynamic
State electric current, and its on-load voltage regulating switch is transferred the files only 6 grades, and being limited in scope for extreme current is measured.
In conclusion needing to have designed a kind of electric furnace electrode current device to improve above-mentioned deficiency.
Utility model content
In order to overcome the deficiencies of existing technologies, the technical problem to be solved by the utility model is to propose a kind of dynamic electric
The measuring device of electrode current, the utility model include transformer, wear the first current transformer of cable formula group, switching contact plate
Group, the second current transformer group and the third current transformer group positioned at measurement end, each of switching contact plate group
Switching disk all has the contact plate for the 14 contacts composition being one another in series, the winding in the first current transformer group with it is corresponding
Contact plate contact, by the second current transformer group contacted with contact plate, then by with the second current transformer group pair
The third current transformer group that should be arranged measures to obtain electric current in transformer, and the measurement of dynamic current may be implemented.In addition, touching
Gear in point disk has 14 grades, and up to more than 30,000 peaces, substantially increasing can survey the secondary current extreme value for the transformer that can be measured
The range of electric furnace electrode electric current.
For this purpose, the utility model uses following technical scheme：
The utility model provides a kind of measuring device of dynamic electrode current, including transformer, wears the first electric current of cable formula
Mutual inductor group, switching contact plate group, the second current transformer group and third current transformer group；
The transformer includes the terminals of the A phase, B phase, C phase positioned at high-pressure side；
The first current transformer group includes being arranged in the first winding that the A phases hold, being arranged in the B phases are held
Two windings and it is arranged in the tertiary winding that the C phases are held；
The switching contact plate group includes the first switch switch plate for being equipped with 14 contact gears, is equipped with 14 contacts
The second switch switch plate of gear and third switching disk equipped with 14 contact gears；
14 contacts of the first switch switch plate are sequentially connected in series into the first contact plate；
14 contacts of the second switch switch plate are sequentially connected in series into the second contact plate；
14 contacts of the third switching disk are sequentially connected in series into third contact plate；
One end of one end of first winding, one end of second winding and the tertiary winding respectively with institute
State the first contact plate, second contact plate, third contact plate electrical connection；
The other end of the other end of first winding, the other end of second winding and the tertiary winding closes
And it is connected to E points；
The second current transformer group includes that the first current transformer, the second current transformer and third electric current are mutual
Sensor；
First current transformer includes the first first winding and the first secondary winding；
Second current transformer includes the second first winding and second secondary winding；
The third current transformer includes third first winding and third secondary winding；
14 of first first winding lift one's head terminals respectively with 14 contacts pair of first contact plate
It should be electrically connected；
14 of second first winding lift one's head terminals respectively with 14 contacts pair of second contact plate
It should be electrically connected；
14 of the third first winding lift one's head terminals respectively with 14 contacts pair of the third contact plate
It should be electrically connected；
The third current transformer group includes that the 4th current transformer, the 5th current transformer and the 6th electric current are mutual
Sensor；
4th current transformer include the 4th first winding that both ends are electrically connected with first secondary winding and
4th secondary winding；
5th current transformer include the 5th first winding that both ends are electrically connected with the second secondary winding and
5th secondary winding；
6th current transformer include the 6th first winding that both ends are electrically connected with the third secondary winding and
6th secondary winding；
The both ends of 4th secondary winding, the both ends of the 5th secondary winding and the 6th secondary winding
The external measurement interface for measuring electric current in both ends.
Optionally, first current transformer, second current transformer and the third current transformer are equal
To have more hair style current transformer.
Optionally, first first winding, second first winding and the third first winding are grounded.
Optionally, first current transformer, second current transformer, the third current transformer, described
The accuracy rating of 4th current transformer, the 5th current transformer and the 6th current transformer is 0.5 grade.
The beneficial effects of the utility model are：
A kind of measuring device of dynamic electrode current provided by the utility model, the utility model include transformer, wear cable
The first current transformer of formula group, switching contact plate group, the second current transformer group and the third electric current positioned at measurement end
Mutual inductor group, each switching disk in switching contact plate group all have the contact for the 14 contacts composition being one another in series
Disk, the winding in the first current transformer group are contacted with corresponding contact plate, pass through the second Current Mutual Inductance contacted with contact plate
Then device group measures to obtain electricity in transformer by the third current transformer group being correspondingly arranged with the second current transformer group
Stream, may be implemented the measurement of dynamic current.In addition, the gear in contact plate has 14 gears, the transformer that can be measured
Secondary current extreme value substantially increases the range that can survey electric furnace electrode electric current up to more than 30,000 peaces.
Description of the drawings
Fig. 1 is a kind of structural representation of the measuring device for dynamic electrode current that specific embodiment of the present invention provides
Figure.
In figure：
1- transformers；2- the first current transformer groups；The first windings of 21-；The second windings of 22-；The 23- tertiary windings；3- is opened
Concern changes contact plate group；31- first switch switch plates；The first contact plates of 311-；32- second switch switch plates；321- second is touched
Point disk；33- third switching disks；331- third contact plates；4- the second current transformer groups；The first current transformers of 41-；
The first first windings of 411-；The first secondary windings of 412-；The second current transformers of 42-；The second first windings of 421-；422- second
Secondary winding；43- third current transformers；431- third first windings；432- third secondary windings；5- third current transformers
Group；The 4th current transformers of 51-；The 4th first windings of 511-；The 4th secondary windings of 512-；The 5th current transformers of 52-；521-
5th first winding；The 5th secondary windings of 522-；The 6th first windings of 531-；The 6th secondary windings of 532-；The 6th electric currents of 53- are mutual
Sensor.
Specific implementation mode
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
Show to Fig. 1 exemplaries a kind of structural representation of the measuring device of dynamic electrode current provided by the utility model
Figure.As shown in Figure 1, a kind of measuring device of dynamic electrode current, including transformer 1, wear the first current transformer of cable formula group 2,
Switching contact plate group 3, the second current transformer group 4 and third current transformer group 5；Transformer 1 includes being located at high pressure
The A phase, B phase, C phase terminals at end；First current transformer group 2 includes being arranged in the first winding 21 that A phases hold, being arranged in B phases
End the second winding 22 and be arranged in the tertiary winding 23 that C phases are held；Switching contact plate group 3 includes being equipped with 14 contacts
It the first switch switch plate 31 of gear, the second switch switch plate 32 equipped with 14 contact gears and is kept off equipped with 14 contacts
The third switching disk 33 of position；14 contacts of first switch switch plate 31 are sequentially connected in series into the first contact plate 311；Second opens
14 contacts of removable disk 32 deeply concerned are sequentially connected in series into the second contact plate 321；It goes here and there successively 14 contacts of third switching disk 33
It is unified into third contact plate 331；Distinguish one end of one end of the first winding 21, one end of the second winding 22 and the tertiary winding 23
It is electrically connected with the first contact plate 311, the second contact plate 321, third contact plate 331；The other end, the second winding of first winding 21
The other end merging of 22 other end and the tertiary winding 23 is connected to E points；Second current transformer group 4 includes the first electric current
Mutual inductor 41, the second current transformer 42 and third current transformer 43；First current transformer 41 include first once around
Group 411 and the first secondary winding 412；Second current transformer 42 includes the second first winding 421 and second secondary winding 422；
Third current transformer 43 includes third first winding 431 and third secondary winding 432；14 of first first winding 411 go out
The electrical connection corresponding with 14 contacts of the first contact plate 311 respectively of head terminals；14 wiring of lifting one's head of the second first winding 421
End electrical connection corresponding with 14 contacts of the second contact plate 321 respectively；14 of third first winding 431 lift one's head terminals difference
Electrical connection corresponding with 14 contacts of third contact plate 331；Third current transformer group 5 includes the 4th current transformer 51, the
Five current transformers 52 and the 6th current transformer 53；4th current transformer 51 includes both ends and the first secondary winding 412
The 4th first winding 511 and the 4th secondary winding 512 of electrical connection；5th current transformer 52 includes both ends and the two or two
The 5th first winding 521 and the 5th secondary winding 522 that secondary winding 422 is electrically connected；6th current transformer 53 includes both ends
The 6th first winding 531 and the 6th secondary winding 532 being electrically connected with third secondary winding 432；4th secondary winding 512
Both ends, the 5th secondary winding 522 both ends and the 6th secondary winding 532 both ends it is external for measuring the survey of electric current
Measure interface.Specifically, secondary side current changes in transformer 1, and the electric current at the primary side high-voltage terminal end in transformer 1 is made to generate
The primary side high-pressure side of variation, transformer 1 is connected with the first current transformer group 2, reacts the variation of electric current in transformer 1.The
One current transformer group 2 senses that the variation of electric current is transferred to the second current transformer group further through switching contact plate group 3
4, it is finally delivered to third current transformer group 5.Third current transformer group 5 is terminated with the ammeter for measuring electric current, can measure the
Current value at three current transformer groups 5.Then it by electric current ratio in current transformer, carries out that Circuit Fault on Secondary Transformer is calculated
The current value of pressure side.Contact plate in switching contact plate group 3 has 14 contacts being together in series, with the first Current Mutual Inductance
The connected winding connection end of device group 2, neatly automatically can reconcile the gear contacted with contact plate according to the size of load, thus
Dynamic electric current can be measured.In addition, have 14 gears at contact plate, therefore the extreme value of detectable electric current reaches more than 30,000
Peace, substantially increases the range that can survey electric furnace electrode electric current.
Optionally, the first current transformer 41, the second current transformer 42 and third current transformer 43 are to have more
Hair style current transformer.Go out hair style current transformer can connect multiple contact points, and multiple contacts with contact plate can be very
It is connected well.
Optionally, the first first winding 411, the second first winding 421 and third first winding 431 are grounded.Ground connection
The current transformer in the second current transformer group 4 can be protected to be damaged because of short circuit, while can be with protection personnel's
Personal safety.
Optionally, the first current transformer 41, the second current transformer 42, third current transformer 43, the 4th electric current are mutual
The accuracy rating of sensor 51, the 5th current transformer 52 and the 6th current transformer 53 is 0.5 grade.0.5 grade accurate etc.
The current value deviation that the current transformer of grade measures is smaller, can improve the precision of the electric current of measurement.
The utility model is described with reference to the preferred embodiments, and those skilled in the art know, is not departing from this reality
In the case of with novel spirit and scope, various changes or equivalence replacement can be carried out to these features and embodiment.This reality
It is not limited to the particular embodiment disclosed with novel, other embodiments fallen into claims hereof all belong to
In the range of the utility model protection.
Claims (4)
1. a kind of measuring device of dynamic electrode current, it is characterised in that：
Including transformer (1), wear cable formula the first current transformer group (2), switching contact plate group (3), the second Current Mutual Inductance
Device group (4) and third current transformer group (5)；
The transformer (1) includes the terminals of the A phase, B phase, C phase positioned at high-pressure side；
The first current transformer group (2) includes being arranged in the first winding (21) that the A phases hold, being arranged in the B phases and hold
The second winding (22) and be arranged in the tertiary winding (23) that the C phases are held；
The switching contact plate group (3) includes the first switch switch plate (31) for being equipped with 14 contact gears, is equipped with 14
The second switch switch plate (32) of contact gear and third switching disk (33) equipped with 14 contact gears；
14 contacts of the first switch switch plate (31) are sequentially connected in series into the first contact plate (311)；
14 contacts of the second switch switch plate (32) are sequentially connected in series into the second contact plate (321)；
14 contacts of the third switching disk (33) are sequentially connected in series into third contact plate (331)；
One end of one end of first winding (21), one end of second winding (22) and the tertiary winding (23)
It is electrically connected respectively with first contact plate (311), second contact plate (321), the third contact plate (331)；
The other end of first winding (21), the other end of second winding (22) and the tertiary winding (23)
Other end merging is connected to E points；
The second current transformer group (4) includes the first current transformer (41), the second current transformer (42) and third
Current transformer (43)；
First current transformer (41) includes the first first winding (411) and the first secondary winding (412)；
Second current transformer (42) includes the second first winding (421) and second secondary winding (422)；
The third current transformer (43) includes third first winding (431) and third secondary winding (432)；
14 of first first winding (411) lift one's head described 14 respectively with first contact plate (311) of terminals
Contact corresponds to electrical connection；
14 of second first winding (421) lift one's head described 14 respectively with second contact plate (321) of terminals
Contact corresponds to electrical connection；
14 of the third first winding (431) lift one's head described 14 respectively with the third contact plate (331) of terminals
Contact corresponds to electrical connection；
The third current transformer group (5) includes the 4th current transformer (51), the 5th current transformer (52) and the 6th
Current transformer (53)；
4th current transformer (51) includes the 4th first winding that both ends are electrically connected with first secondary winding (412)
(511) and the 4th secondary winding (512)；
5th current transformer (52) includes the 5th first winding that both ends are electrically connected with the second secondary winding (422)
(521) and the 5th secondary winding (522)；
6th current transformer (53) includes the 6th first winding that both ends are electrically connected with the third secondary winding (432)
(531) and the 6th secondary winding (532)；
The both ends of 4th secondary winding (512), both ends of the 5th secondary winding (522) and six or two time described
The external measurement interface for measuring electric current in the both ends of winding (532).
2. a kind of measuring device of dynamic electrode current as described in claim 1, it is characterised in that：
First current transformer (41), second current transformer (42) and the third current transformer (43)
It is to have more hair style current transformer.
3. a kind of measuring device of dynamic electrode current as claimed in claim 2, it is characterised in that：
First first winding (411), second first winding (421) and the third first winding (431) connect
Ground.
4. a kind of measuring device of dynamic electrode current as claimed in claim 3, it is characterised in that：
It is first current transformer (41), second current transformer (42), the third current transformer (43), described
4th current transformer (51), the 5th current transformer (52) and the 6th current transformer (53) it is accurate etc.
Grade is 0.5 grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820351241.4U CN207882333U (en) | 2018-03-15 | 2018-03-15 | A kind of measuring device of dynamic electrode current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820351241.4U CN207882333U (en) | 2018-03-15 | 2018-03-15 | A kind of measuring device of dynamic electrode current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207882333U true CN207882333U (en) | 2018-09-18 |
Family
ID=63496264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820351241.4U Expired - Fee Related CN207882333U (en) | 2018-03-15 | 2018-03-15 | A kind of measuring device of dynamic electrode current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207882333U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441827A (en) * | 2021-12-22 | 2022-05-06 | 新疆升晟股份有限公司 | Method for measuring current at low-voltage end of electric furnace transformer |
-
2018
- 2018-03-15 CN CN201820351241.4U patent/CN207882333U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441827A (en) * | 2021-12-22 | 2022-05-06 | 新疆升晟股份有限公司 | Method for measuring current at low-voltage end of electric furnace transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 |