CN106024299B - A kind of zero sequence current mutual inductor for preventing cable from loosening - Google Patents
A kind of zero sequence current mutual inductor for preventing cable from loosening Download PDFInfo
- Publication number
- CN106024299B CN106024299B CN201610474013.1A CN201610474013A CN106024299B CN 106024299 B CN106024299 B CN 106024299B CN 201610474013 A CN201610474013 A CN 201610474013A CN 106024299 B CN106024299 B CN 106024299B
- Authority
- CN
- China
- Prior art keywords
- claw
- core pipe
- pressure ring
- sequence current
- zero sequence
- Prior art date
- 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.)
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Links
- 210000000078 claw Anatomy 0.000 claims abstract description 50
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The present invention relates to a kind of zero sequence current mutual inductor for preventing cable from loosening, including a pressure ring, a core pipe, a plug, a current transformer and two casing pressure claw assemblies；The pressure ring is a hollow sleeve, its inner containment has a core pipe, the core pipe is co-axially located in pressure ring, the core pipe both ends are respectively symmetrically connected with a set of claw component, and the claw component includes several claws arranged along core pipe periphery, and the claw includes claw bar and the pressure head positioned at claw bar lower end, the claw bar upper end passes perpendicularly through pressure ring side wall, and clamping screw is arranged on the claw bar, the plug is arranged on inside core pipe, and is connect by reinforcing rib with core pipe.The advantage of the invention is that：The zero sequence current mutual inductor of the present invention is not needed to reserved installation position, is easily installed due to included press claw type retaining mechanism.
Description
Technical field
The present invention relates to a kind of power domain, more particularly to a kind of zero sequence current mutual inductor for preventing cable from loosening.
Background technology
The basic principle of zero-sequence current protection is based on Kirchhoff's current law (KCL)：Flow into the telegram in reply of any node in circuit
The algebraical sum of stream is equal to zero.Normal with electrical equipment in circuit, the vector sum of each phase current is equal to zero, therefore, zero
The secondary side winding no signal output of sequence current transformer, executive component are failure to actuate.It is each when generation electric shock or leak current fault
The vector sum of phase current is not zero, and fault current makes to generate magnetic flux, zero sequence current mutual inductor in the iron core of zero sequence current mutual inductor
Generated electric current is zero-sequence current.When protection mechanism receives the zero sequence current signal, it can be taken according to electrical leakage quantity accordingly
Protection act.
The mounting means of existing zero sequence current mutual inductor is mostly to be fixed using flange installation or fixed using bonding mode,
Its installation site generally require it is reserved so that the application of zero sequence current mutual inductor is by more limitation.
Invention content
The technical problem to be solved in the present invention is to provide a kind of zero sequence current mutual inductors for preventing cable from loosening.
In order to solve the above technical problems, the technical scheme is that：A kind of zero sequence current mutual inductance for preventing cable from loosening
Device, innovative point are：Including a pressure ring, a core pipe, a plug, a current transformer and two casing pressure claw assemblies；The pressure ring
For a hollow sleeve, inner containment has a core pipe, and the core pipe is co-axially located in pressure ring, which respectively symmetrically lives
Dynamic to be connected with a set of claw component, the claw component includes several claws arranged along core pipe periphery, and the claw includes
Claw bar and on claw bar close to plug one end pressure head, the one end of claw bar far from plug passes perpendicularly through pressure ring side
Wall, bolt A are arranged on close to one end of pressure ring on claw bar, and bolt B is arranged on claw bar close to one end of core pipe；The spiral shell
Bolt A upper ends have symmetrically arranged feeler, and the bolt B lower end has symmetrically arranged feeler.
Further, there is the waist extended along pressure ring circumferencial direction coordinated with claw bar upper end on the pressure ring outer surface
Type groove.
The advantage of the invention is that：
(1) zero sequence current mutual inductor of the invention does not need to reserved installation position, easily due to included press claw type retaining mechanism
In installation.
(2) present invention is clamped in using two casing pressure claw assemblies on same cable, has the effect of dual fail-safe, even if wherein one
Set goes wrong in use, also another set of its working performance of guarantee.
(3) bolt of the invention by being arranged between pressure ring and core pipe, drive ram clamp electric power cable, ensure simultaneously
Core pipe is fixed on pressure ring, has excellent anti-loosening effect, and the reliability of long-term work is effectively ensured.
(4) clamping screw is divided into the bolt A being pressed on pressure ring medial surface and the bolt B being pressed on core pipe lateral surface,
Bolt A ensures the position relationship of pressure ring and claw bar, and bolt B ensures the position of core pipe and claw bar, two bolt tightening directions
Difference ensures the fastness of connection.
Description of the drawings
Fig. 1 is section signal after a kind of removal current transformer for the zero sequence current mutual inductor for preventing cable from loosening of the present invention
Figure.
Fig. 2 is a kind of removal current transformer lateral side view for the zero sequence current mutual inductor for preventing cable from loosening of the present invention.
Specific embodiment
As shown in Figure 1 and Figure 2, the invention discloses a kind of zero sequence current mutual inductor for preventing cable from loosening, including a pressure ring
5th, a core pipe 6, a plug 7, a current transformer and two casing pressure claw assemblies；Pressure ring 5 is a hollow sleeve, and inner containment has one
Core pipe 6, core pipe 6 are co-axially located in pressure ring 5, which is respectively symmetrically connected with a set of claw component, claw group
Part includes several claws arranged along 6 periphery of core pipe, and claw includes claw bar 2 and on claw bar close to the one of plug
The pressure head 8 at end, the one end of claw bar far from plug pass perpendicularly through pressure ring side wall, and bolt A is arranged on claw bar close to pressure ring
One end, and clamping screw is arranged on the claw bar 2, plug 7 is arranged on inside core pipe 6, and is connected by reinforcing rib 1 and core pipe 6
It connects.
There is the waist type groove 9 extended along 5 circumferencial direction of pressure ring that coordinates with 2 upper end of claw bar on 5 outer surface of pressure ring, it can be with
Adapt to different 2 link positions of claw bar；Clamping screw has bolt A3 and bolt B 4, and bolt A3 is arranged on claw bar 2
Portion, convenient for being completely embedded with pressure ring 5, bolt B 4 is arranged on 2 lower part of claw bar；Two bolts are screwed to opposite position, bolt A3
Upper end has symmetrically arranged feeler, is contacted convenient for the arc inner wall with pressure ring, and 4 lower end of bolt B has symmetrically arranged feeler,
Convenient for being contacted with the arc outer wall of core pipe 6.
The basic principle and main feature of the present invention has been shown and described above.It should be understood by those skilled in the art that
The present invention is not limited to the above embodiments, and the above embodiments and description only illustrate the principle of the present invention,
Without departing from the spirit and scope, various changes and improvements may be made to the invention, these changes and improvements are all fallen
Enter in scope of the claimed invention.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (2)
1. a kind of zero sequence current mutual inductor for preventing cable from loosening, it is characterised in that：Including a pressure ring, a core pipe, a plug, one
Current transformer and two casing pressure claw assemblies；The pressure ring is a hollow sleeve, and inner containment has a core pipe, and the core pipe is coaxial
It is arranged in pressure ring, which is respectively symmetrically connected with a set of claw component, and the claw component includes several edges
The claw of core pipe periphery arrangement, the pressure head of claw one end of close plug including claw bar and on claw bar,
The one end of claw bar far from plug passes perpendicularly through pressure ring side wall, and bolt A is arranged on claw bar close to one end of pressure ring, bolt B
It is arranged on claw bar close to one end of core pipe；The bolt A upper ends have symmetrically arranged feeler, the bolt B lower end tool
There is symmetrically arranged feeler.
2. a kind of zero sequence current mutual inductor for preventing cable from loosening according to claim 1, it is characterised in that：The pressure ring
There is the waist type groove extended along pressure ring circumferencial direction coordinated with claw bar upper end on outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610474013.1A CN106024299B (en) | 2016-06-27 | 2016-06-27 | A kind of zero sequence current mutual inductor for preventing cable from loosening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610474013.1A CN106024299B (en) | 2016-06-27 | 2016-06-27 | A kind of zero sequence current mutual inductor for preventing cable from loosening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106024299A CN106024299A (en) | 2016-10-12 |
| CN106024299B true CN106024299B (en) | 2018-06-26 |
Family
ID=57083818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610474013.1A Active CN106024299B (en) | 2016-06-27 | 2016-06-27 | A kind of zero sequence current mutual inductor for preventing cable from loosening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106024299B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493062A (en) * | 2018-05-29 | 2018-09-04 | 首瑞（天津）电气设备有限公司 | Major loop for residual current circuit breaker |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8403996D0 (en) * | 1984-02-15 | 1984-03-21 | Crest Energyscan Ltd | Current measuring device |
| CN2540019Y (en) * | 2002-04-12 | 2003-03-12 | 大连第一互感器厂 | current transformer for cable |
| US7884598B2 (en) * | 2007-08-30 | 2011-02-08 | Fluke Corporation | Clamp jaw assembly |
| CN203812739U (en) * | 2014-05-08 | 2014-09-03 | 过丽清 | Insulating rod for high-voltage switchgear |
| CN105609281A (en) * | 2016-01-15 | 2016-05-25 | 胡妍 | Zero-sequence current transformer for preventing cable from loosening |
-
2016
- 2016-06-27 CN CN201610474013.1A patent/CN106024299B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106024299A (en) | 2016-10-12 |
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| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |