CN205992471U - There is the zero sequence current mutual inductor of preferably anti-loosening performance - Google Patents
There is the zero sequence current mutual inductor of preferably anti-loosening performance Download PDFInfo
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- CN205992471U CN205992471U CN201620190409.9U CN201620190409U CN205992471U CN 205992471 U CN205992471 U CN 205992471U CN 201620190409 U CN201620190409 U CN 201620190409U CN 205992471 U CN205992471 U CN 205992471U
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- Prior art keywords
- paw
- core pipe
- pressure ring
- plate portion
- plug
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- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims description 3
- 235000014593 oils and fats Nutrition 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002360 explosive Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 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
- 210000000078 claw Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of zero sequence current mutual inductor with preferably anti-loosening performance, including pressure ring, core pipe, plug, current transformer and paw assembly；Core pipe tube wall is provided with three radially-directed holes；Paw assembly includes three paws；Each paw is provided with pressing plate portion, guide runner portion and transmission plate portion；The side that pressure ring and each paw guide runner portion adjoin is provided with three helicla flutes；The driver plate portion of each paw is located in a corresponding helicla flute；Current transformer includes annular matrix, and clamp hole position is in annular matrix vestibule；Plug is located in core pipe tube chamber；The periphery wall of plug is provided with three arc clip slots, and each arc clip slot and arcuate groove clamping form a clamp hole；Also include elastic water-proof set；Pressure ring, core pipe, plug, current transformer and paw assembly are respectively positioned in the cavity of this elastic water-proof set；Pressure ring promotes corresponding paw towards core pipe central slide when rotating.This utility model has better performance.
Description
Technical field
This utility model belongs to technical field of electric power and in particular to a kind of zero-sequence current with preferably anti-loosening performance is mutual
Sensor.
Background technology
The ultimate 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.In the case of circuit and electrical equipment are normal, the vector of each phase current is equal to zero, therefore, zero
The secondary side winding no signal output of sequence current transformer, executive component is failure to actuate.Each when there is electric shock or leak current fault
The vector of phase current is not zero, and fault current makes to produce magnetic flux, zero sequence current mutual inductor in the iron core of zero sequence current mutual inductor
Produced electric current is zero-sequence current.When protection mechanism receives this zero sequence current signal, can be taken accordingly according to electrical leakage quantity
Protection act.Mostly the mounting means of existing zero sequence current mutual inductor is to install fixing using flange or adopt bonding mode solid
Fixed, its installation site generally requires reserved, so that the application of zero sequence current mutual inductor is subject to more restriction.
Utility model content
The purpose of this utility model be provide a kind of be easily installed positioning, to have having of preferable firmness preferably locking
The zero sequence current mutual inductor of dynamic performance.
The technical scheme realizing this utility model purpose is：A kind of zero sequence current mutual inductance with preferably anti-loosening performance
Device, including a pressure ring, a core pipe, a plug, a current transformer and a set of paw assembly；Core pipe tube wall is provided with
Three radially-directed holes；Paw assembly includes three paws；Each paw is provided with pressing plate portion, guide runner portion and transmission plate portion；
Each pressing plate portion is located in core pipe tube chamber, and the inwall in each pressing plate portion is provided with arcuate groove；The outer end in the guide runner portion of each paw is stretched out
Core pipe tube wall, each driver plate portion is located at outside core pipe tube wall；Each paw reciprocatingly slides along a corresponding radially-directed hole；Pressure ring turns
Move and be arranged on the periphery wall of core pipe, three in pressure ring and paw assembly guide runner portion is provided adjacent to；Pressure ring and each paw
The side that guide runner portion adjoins is provided with three helicla flutes；The driver plate portion of each paw is located in a corresponding helicla flute；
Current transformer includes annular matrix, and clamp hole position is in annular matrix vestibule；Plug is located in core pipe tube chamber；The periphery of plug
Wall is provided with three arc clip slots, and each arc clip slot is axially extending along core pipe, and each arc clip slot is just to a corresponding paw inwall
On arcuate groove setting；Each arc clip slot and a corresponding arcuate groove clamping form a clamp hole；The transmission plate portion of each paw
It is provided in the flange axially projecting along core pipe in each guide runner portion, the outboard end of flange is provided with chisel teeth；Also include one
Individual axial back-up ring；The periphery wall of core pipe is provided with the gear platform of evagination and the annular groove of indent, and axial back-up ring is arranged on core pipe
In annular groove；The internal perisporium of pressure ring is the smooth inner wall adjacent with the slip of core pipe periphery wall；The periphery wall of pressure ring is provided with many
Individual binding groove；One side of pressure ring and axial back-up ring slide and adjoin, and the guide runner portion of another side of pressure ring and each paw is slided
Dynamic adjacent；Also include elastic water-proof set；The two ends of this elastic water-proof set are equipped with cable perforation, pressure ring, core pipe, plug, electric current
Transformer and paw assembly are respectively positioned in the cavity of this elastic water-proof set；It is filled with insulation oils and fatss in the cavity of elastic water-proof set；
Extrude the transmission plate portion of a corresponding paw when pressure ring rotates by each helicla flute, and then promote corresponding paw towards in core pipe
The heart slides.
This utility model has positive effect：（1）Zero sequence current mutual inductor of the present utility model is due to carrying press claw type
Retaining mechanism is it is not necessary to reserved installation position is it is easy to install, and has preferably anti-loosening effect, and firm intensity is relatively high and stable
Reliable.
Brief description
Fig. 1 is a kind of perspective view of the present utility model；
Fig. 2 removes a kind of perspective view after current transformer for zero sequence current mutual inductor shown in Fig. 1；
Fig. 3 is a kind of perspective view when another angle is observed for the zero sequence current mutual inductor shown in Fig. 2；
Fig. 4 is a kind of front view of zero sequence current mutual inductor shown in Fig. 2；
Fig. 5 is that one kind of zero sequence current mutual inductor shown in Fig. 2 partly cuts open structural representation；
Fig. 6 is a kind of explosive view of zero sequence current mutual inductor shown in Fig. 2；
Fig. 7 is a kind of explosive view when another angle is observed for the zero sequence current mutual inductor shown in Fig. 2；
Fig. 8 removes a kind of explosive view after pressure ring and back-up ring for zero sequence current mutual inductor shown in Fig. 2；
Fig. 9 removes a kind of blast when another angle is observed after pressure ring and back-up ring for zero sequence current mutual inductor shown in Fig. 2
Figure.
Specific embodiment
（Embodiment 1）
The present embodiment is a kind of zero sequence current mutual inductor with preferably anti-loosening performance, as shown in Fig. 1 to Fig. 9, including
The axial back-up ring 4 of 1, core pipe 2 of one pressure ring, a set of paw assembly 7, current transformer 8 of 3, plug and one.
In the present embodiment, pressure ring 1, core pipe 2, paw assembly 3, plug 7 and axial back-up ring 4 are all adopted and are made from an insulative material.
The periphery wall of core pipe 2 is provided with the gear platform 21 of evagination and the annular groove 22 of indent, circumferentially equal on core pipe tube wall
Even three radially-directed holes 23 are distributed with；In the present embodiment, each radially-directed hole extends radially through core pipe tube wall along core pipe.Axially keep off
Circle is arranged in the annular groove of core pipe.
Each radially-directed hole 23 includes guiding slide opening 231 and the anticreep slide opening 232 axially setting gradually along core pipe；Guiding is slided
Hole is arranged on the edge away from a side of axial back-up ring for the core pipe, and anticreep slide opening connects with guiding slide opening；Each radially-directed hole
Radial cross-sectional shape be T-shaped；Each radially-directed hole 23 forms a breach being located at core pipe edge；In the present embodiment, respectively
Radially-directed hole extends radially through gear platform 21 along core pipe.
Paw assembly includes three paws 5；Each paw is provided with pressing plate portion 51, the guide runner portion 52 radially extending along core pipe
And it is arranged on the transmission plate portion 53 in guide runner portion；The transmission plate portion of each paw is provided in the edge in each guide runner portion
The axially projecting flange of core pipe, the outboard end of this flange is provided with chisel teeth 54.
Each pressing plate portion is located in core pipe tube chamber, and core pipe tube wall, each driver plate are stretched out in the outer end in the guide runner portion of each paw
Portion is located at outside core pipe tube wall；Each guide runner portion 52 includes guide part 521 and anti-delinking part 522, and guide part is located at corresponding one
In the guiding slide opening in radially-directed hole, anti-delinking part is located in the anticreep slide opening in a corresponding radially-directed hole；Guide part and anticreep
The radial cross-sectional shape in portion is T-shaped with radially-directed hole adaptation.Each paw is in the spacing of radially-directed hole and guide effect
Under, reciprocatingly slide along core pipe radial direction；The inwall in each pressing plate portion is provided with arcuate groove 55.
Pressure ring 1 is rotatably arranged on the periphery wall of core pipe, and is located between gear platform and axial back-up ring；The internal perisporium of pressure ring is
The smooth inner wall adjacent with the slip of core pipe periphery wall；The periphery wall of pressure ring is provided with multiple binding grooves 11；In the present embodiment, pressure ring
A side and axial back-up ring slide adjacent, the guide runner portion of another side of pressure ring and each paw slides adjacent；Pressure ring and
The side that each paw guide runner portion adjoins is provided with three helicla flutes 12；In the present embodiment, each helicla flute includes and pressure ring
The anticreep area 121 of vestibule 13 connection and the accommodating area 122 away from pressure ring vestibule；The diapire in anticreep area is provided with multiple wedge shapes to be prevented
De- tooth 123, the chisel teeth adaptation of each wedge shape anticreep tooth and paw；Accommodating area is smooth chute；The present embodiment, in operation, is adopted
Catch on the binding groove on pressure ring with hook type spanner and twist pressure ring.
Plug is located in core pipe tube chamber；The periphery wall of plug is provided with three arc clip slots 71, and each arc clip slot is along core pipe
Axially extending, each arc clip slot is just arranged to the arcuate groove on a corresponding paw inwall；Each arc clip slot and a corresponding arc
Shape groove clamping forms a clamp hole 61；So the present embodiment can form three clamp holes, can be used for simultaneously clamping on three cables.
The periphery wall of plug is provided with the four support positioning flanges 72 protruding along core pipe radial direction, the internal perisporium of core pipe
It is provided with four positioning runners 24, each outboard end supporting positioning flange is embedded in a corresponding positioning runner, thus core
Rod is positioned in the tube chamber of core pipe.
The present embodiment, in order to lift chuck strength, is also provided with multiple punctures 6 in each arcuate groove and arc clip slot；Specifically come
Say, each radially protruding puncturing along core pipe portion.
In the present embodiment, each paw is the integral piece made by injection mo(u)lding, and each puncture is made in injection mo(u)lding；?
In concrete practice, puncture may also be employed alternate manner and makes；In each arcuate groove, for example it is provided with multiple installation draw-in grooves, then adopting
The puncture piece being made from an insulative material is inlaid in corresponding one and installs in draw-in groove；Puncture piece and include installation portion and thorn blade, install
Portion is inlaid in installation draw-in groove, and thorn blade then exposes installation draw-in groove and forms puncture.In concrete practice, can also be using each
The mode being threaded in arc clip slot and arcuate groove, also can improving clamping sigma compactness energy.
Current transformer includes annular matrix 81 and intelligent control module；In the present embodiment, this current transformer is sheathed solid
It is scheduled on the periphery wall of core pipe.Intelligent control module can include wireless transmit/receive units, and intelligent control module passes through wireless receiving and dispatching
The zero sequence current signal that unit senses annular matrix sends distance host to, to realize the long-range no worker monitor of precision；This
Kind of structure can make full use of space, is conducive to overall small-sized and integrated.
In concrete practice, this current transformer could be secured on other positions, as long as making clamp hole position in annular
In matrix vestibule, it is all feasible.
The driver plate portion of each paw is located in a corresponding helicla flute；Each helicla flute rotates so that corresponding one with pressure ring
Individual transmission plate portion namely produces squeezing action to this transmission plate portion from positioned at accommodating area to positioned at anticreep area；Pressure ring passes through three
Helicla flute synchronously drives three paws so that each pressing plate portion is close to each other towards core pipe center, thus clamping is located in clamp hole
Electric power cable.
When the chisel teeth in each pressing plate portion is clamped on the wedge shape anticreep tooth in corresponding anticreep area, wedge shape anticreep tooth prevents from pressing
Ring reverses, so that the present embodiment has preferably anti-loosening effect.
The present embodiment also includes elastic water-proof set（It is not drawn on figure）, the two ends of this elastic water-proof set are equipped with cable and wear
Hole, pressure ring, core pipe, plug, current transformer and paw assembly are respectively positioned in the cavity of this elastic water-proof set；Elastic water-proof set
It is filled with insulation oils and fatss in cavity.
The present embodiment passes through cable clamping to be arranged at the longitudinal center line of zero sequence current mutual inductor, and its gravity centre distribution is relatively
For reasonable, when on for high-altitude overhead power line, be conducive to mitigating vibration；In addition, the present embodiment is prevented by having wedge shape
The slope groove of de- tooth positions to each paw, can play the technique effect preventing falling back, and by traditional bolt assembly
Clamping electric power cable is compared, particularly excellent in anti-loosening effect, and the reliability of long-term work is effectively ensured.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate this utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need to give to all of embodiment
Exhaustive.And these belong to the obvious change that connotation of the present utility model extended out or change and still fall within this practicality
New protection domain.
Claims (1)
1. a kind of zero sequence current mutual inductor with preferably anti-loosening performance it is characterised in that：Including a pressure ring, a core
Pipe, a plug, a current transformer and a set of paw assembly；Core pipe tube wall is provided with three radially-directed holes；Paw group
Part includes three paws；Each paw is provided with pressing plate portion, guide runner portion and transmission plate portion；Each pressing plate portion is located at core pipe tube chamber
In, the inwall in each pressing plate portion is provided with arcuate groove；Core pipe tube wall, each driver plate position are stretched out in the outer end in the guide runner portion of each paw
Outside core pipe tube wall；Each paw reciprocatingly slides along a corresponding radially-directed hole；Pressure ring is rotatably arranged on the periphery wall of core pipe
On, three guide runner portions in pressure ring and paw assembly are provided adjacent to；The side that pressure ring and each paw guide runner portion adjoin
End is provided with three helicla flutes；The driver plate portion of each paw is located in a corresponding helicla flute；Current transformer includes circular base
Body, clamp hole position is in annular matrix vestibule；Plug is located in core pipe tube chamber；The periphery wall of plug is provided with three arc folders
Groove, each arc clip slot is axially extending along core pipe, and each arc clip slot is just arranged to the arcuate groove on a corresponding paw inwall；Each arc
Clevis groove and a corresponding arcuate groove clamping form a clamp hole；The transmission plate portion of each paw is provided in each guide runner portion
On the flange axially projecting along core pipe, the outboard end of flange is provided with chisel teeth；Also include an axial back-up ring；The periphery of core pipe
Wall is provided with the gear platform of evagination and the annular groove of indent, and axial back-up ring is arranged in the annular groove of core pipe；The inner circumferential of pressure ring
Wall is the smooth inner wall adjacent with the slip of core pipe periphery wall；The periphery wall of pressure ring is provided with multiple binding grooves；One side of pressure ring
Slide with axial back-up ring and adjoin, slide and adjoin in the guide runner portion of another side of pressure ring and each paw；Also include elastic water-proof
Set；The two ends of this elastic water-proof set are equipped with cable perforation, and pressure ring, core pipe, plug, current transformer and paw assembly are respectively positioned on
In the cavity of this elastic water-proof set；It is filled with insulation oils and fatss in the cavity of elastic water-proof set；Pass through each helicla flute when pressure ring rotates
Extrude the transmission plate portion of a corresponding paw, and then promote corresponding paw towards core pipe central slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620190409.9U CN205992471U (en) | 2016-03-11 | 2016-03-11 | There is the zero sequence current mutual inductor of preferably anti-loosening performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620190409.9U CN205992471U (en) | 2016-03-11 | 2016-03-11 | There is the zero sequence current mutual inductor of preferably anti-loosening performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205992471U true CN205992471U (en) | 2017-03-01 |
Family
ID=58101369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620190409.9U Expired - Fee Related CN205992471U (en) | 2016-03-11 | 2016-03-11 | There is the zero sequence current mutual inductor of preferably anti-loosening performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205992471U (en) |
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2016
- 2016-03-11 CN CN201620190409.9U patent/CN205992471U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 Termination date: 20170311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |