CN205992457U - High-tension electricity zero sequence current mutual inductor - Google Patents
High-tension electricity zero sequence current mutual inductor Download PDFInfo
- Publication number
- CN205992457U CN205992457U CN201620190327.4U CN201620190327U CN205992457U CN 205992457 U CN205992457 U CN 205992457U CN 201620190327 U CN201620190327 U CN 201620190327U CN 205992457 U CN205992457 U CN 205992457U
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- Prior art keywords
- paw
- slip pipe
- matrix
- plug
- plane nut
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- 239000011159 matrix material Substances 0.000 claims abstract description 42
- 210000000078 claw Anatomy 0.000 claims abstract description 17
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 235000014593 oils and fats Nutrition 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 8
- 230000006978 adaptation Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 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
- 230000006698 induction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of high-tension electricity zero sequence current mutual inductor, including matrix, plane nut, two casing pressure claw assemblies, a plug and a current transformer；Matrix is provided with slip pipe and radially-directed spacing hole；Each paw is located in a corresponding radially-directed spacing hole；Plane nut is set on the periphery wall of matrix slip pipe；The two side ends of plane nut are respectively provided with a flat thread portion, and each flat thread portion is adapted to the driving threaded portion adjoining each paw in a set of paw assembly；Plug is located in matrix slip pipe tube chamber；Plane nut drives two flat thread portion reciprocating rotations of its two side ends, so the synchronous each paw driving in two casing pressure claw assemblies towards slip pipe center close to each other or away from；Also include elastic water-proof set；Matrix, plane nut, paw assembly, plug summation current transformer are respectively positioned in the cavity of this elastic water-proof set；The periphery wall of plug is provided with support positioning flange, and the internal perisporium of matrix slip pipe is provided with three positioning runners, and each support positioning flange stretches in a corresponding positioning runner away from a side of plug.This utility model is easily installed use.
Description
Technical field
This utility model belongs to technical field of electric power and in particular to a kind of high-tension electricity zero sequence current mutual inductor.
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, therefore makes its application be subject to more restriction.
Utility model content
The purpose of this utility model is to provide one kind to be easily installed positioning, have preferable firmness, effectively prevent from loosening
High-tension electricity zero sequence current mutual inductor.
The technical scheme realizing this utility model purpose is：A kind of high-tension electricity zero sequence current mutual inductor, including matrix, one
Individual plane nut, two casing pressure claw assemblies, a plug and a current transformer；Matrix is provided with slip pipe and is arranged on slip pipe
Radially-directed spacing hole；Each paw is located in a corresponding radially-directed spacing hole, and each paw is provided with driving threaded portion；Plane spiral shell
Mother set is located on the periphery wall of matrix slip pipe, the both sides of two casing pressure claw assemblies separation plane nuts；The two side ends of plane nut are each
It is provided with a flat thread portion, each flat thread portion is adapted to the driving threaded portion adjoining each paw in a set of paw assembly；Core
Rod is located in matrix slip pipe tube chamber；It is provided with three arc clip slots, each arc clip slot along base tube is central axial on the periphery wall of plug
Just to corresponding paw inwall setting, the inwall clamping of each arc clip slot and a corresponding paw forms a clamp hole；Core
The periphery wall of rod is provided with three support positioning flanges along matrix slip pipe radially protruding, and the internal perisporium of matrix slip pipe is provided with three
Individual positioning runner, each support positioning flange stretches in a corresponding positioning runner away from a side of plug, thus plug is fixed
Position is in the tube chamber of matrix slip pipe；Also include elastic water-proof set；The two ends of this elastic water-proof set are equipped with cable perforation；Matrix,
Plane nut, paw assembly, plug summation current transformer are respectively positioned in the cavity of this elastic water-proof set；The cavity of elastic water-proof set
In be filled with insulation oils and fatss；Plane nut drives two flat thread portion reciprocating rotations of its two side ends, and then synchronous drive two
Each paw in casing pressure claw assembly towards slip pipe center close to each other or away from.
This utility model has positive effect：（1）This utility model passes through a plane nut and synchronously drives two casing pressures
Claw assembly clamps electric power cable, compares with clamping electric power cable by traditional bolt assembly, can apply larger pressure, and has
There is excellent anti-loosening effect, the reliability of long-term work is effectively ensured.（2）Zero sequence current mutual inductor of the present utility model
Due to carrying press claw type retaining mechanism it is not necessary to reserved installation position is it is easy to install, and there is preferably anti-loosening effect, firmly
The relatively high and stable reliability of intensity.（3）This utility model adopts two casing pressure claw assemblies, has the effect of dual fail-safe, even if wherein one
Set goes wrong in use, also another set of its service behaviour of guarantee.
Brief description
Fig. 1 is a kind of perspective view of the present utility model；
Fig. 2 is a kind of front view of zero sequence current mutual inductor shown in Fig. 1；
Fig. 3 is that one kind of zero sequence current mutual inductor shown in Fig. 1 partly cuts open structural representation；
Fig. 4 is a kind of explosive view of zero sequence current mutual inductor shown in Fig. 1；
The explosive view that Fig. 5 decomposes further for zero sequence current mutual inductor shown in Fig. 1.
Specific embodiment
（Embodiment 1）
The present embodiment is a kind of high-tension electricity zero sequence current mutual inductor, as shown in Fig. 1 to Fig. 5, puts down for 1, one including matrix
Face nut 2,3, plug 6 of two casing pressure claw assemblies and a current transformer 7；Each casing pressure claw assembly includes three paws 4；Base
Body is provided with slip pipe 11 and the radially-directed spacing hole 12 being arranged on slip pipe；Radially-directed spacing hole passes through along the radial direction of matrix slip pipe
Wear slip pipe tube wall；At the edges at two ends that radially-directed spacing hole 12 is located in matrix slip pipe axial direction；
The quantity of radially-directed spacing hole 12 is identical with the quantity of paw 4, totally six, and the two ends in matrix slip pipe axial direction are each
Three radially-directed spacing holes of setting, this three radially-directed spacing holes are used for and accordingly a set of paw assembly 3 is adapted to；Each paw
In a corresponding radially-directed spacing hole 12, each paw is slided in the guide and limit effect lower edge matrix of radially-directed spacing hole
The radial direction of pipe 11 reciprocatingly slides；
Plane nut 2 be shaped as ring-type, plane nut is set on the periphery wall of matrix slip pipe 11, and be located at two casing pressures
Between claw assembly 3；
Each paw is provided with pressing plate portion 41, the guide runner portion 43 radially extending formation along matrix slip pipe 11 and being arranged on and leads
To the driving threaded portion 44 in slide section；Threaded portion 44 is driven to be arranged on a side of guide runner portion adjacent flat nut；Pressure
The inwall of plate portion is curved, forms an arcuate groove 45.
Plug 6 is located in matrix slip pipe tube chamber；It is provided with three arc clip slots along base tube is central axial on the periphery wall of plug 6
61, each arc clip slot is just arranged to the arcuate groove 45 on a corresponding paw inwall, each arc clip slot and a corresponding arcuate groove
Clamping forms a clamp hole 5, so the present embodiment forms three clamp holes 5 altogether, can be used for simultaneously clamping on three cables, in tool
In body practice, each clamp hole is used for clamping a corresponding phase cable.Because three electric power cables pass through from matrix slip pipe tube chamber,
Current transformer can carry out zero-sequence current detection by induction mode to three electric power cables, finds leakage current for timely
Fault, and by wireless transmit/receive units, real time information is sent to distance host, provide basic data for power circuit is intelligent.
The periphery wall of plug be provided with three along matrix slip pipe radially protruding supports positioning flanges 62, matrix slip pipe interior
Perisporium is provided with three positioning runners 15, and each support positioning flange stretches into a corresponding positioning runner away from a side of plug
In, thus plug is positioned in the tube chamber of matrix slip pipe.
Because existing electric power cable is insulation cable mostly, therefore the present embodiment can be made using metal material；But in order to increase
Strong dielectric strength, the present embodiment preferably employs insulant and makes.
The internal perisporium of plane nut is the smooth inner wall with matrix slip pipe periphery wall adaptation, and the periphery wall of plane nut sets
There is fastening part 21, plane nut is being each provided with a flat thread portion 22, each plane along the two side ends in matrix slip pipe axial direction
Threaded portion is provided with archimedean spiral groove, each flat thread portion then driving spiral shell with three paws in adjacent a set of paw assembly
Stricture of vagina portion engagement adaptation；The outer-hexagonal shape that the fastening part 21 of the present embodiment midplane nut is provided on plane nut periphery wall is tight
Gu head, it twists operation using inner hexagon spanner, shfting wrench or fork spanner；In concrete practice, described fastening part just can be adopted
With other shapes, for example with the multiple binding grooves being evenly distributed on plane nut periphery wall, it is twisted operation and adopts hook type
Spanner（It is commonly called as hook spanner）.
In the present embodiment, each radially-directed spacing hole 12 includes rectangular sliding hole 121 and anticreep slide opening 122, and rectangular sliding hole sets
Put the edge in matrix slip pipe, form a breach, anticreep slide opening connects with rectangular sliding hole, and anti-skid hole position is in rectangular sliding hole
Inboard, anticreep slide opening and rectangular sliding hole combination form T-shaped hole；
The anticreep that each paw guide runner portion 43 is provided with positioned at the guide part 431 in rectangular sliding hole, is located in anticreep slide opening
Portion 432 and the limiting section 433 outside matrix slip pipe, the guide part 431 of each paw, anti-delinking part 432 and 433 groups of limiting section
It is I-shaped for closing the cross sectional shape being formed；The guide part 431 of each paw and anti-delinking part 432 extend radially through each pressure along matrix slip pipe
Pawl；Threaded portion is driven to be arranged on the side end wall of anti-delinking part adjacent flat nut, the shape of anti-delinking part and anticreep slide opening are adapted to；
Drive threaded portion to protrude to be arranged on the side end wall of anti-delinking part adjacent flat nut, so that driving threaded portion immovable
To anticreep slide opening.
In the present embodiment, the direction of rotation in the flat thread portion of plane nut one side is positive, the plane of another side
The direction of rotation of threaded portion is reverse, and the direction of rotation of the driving screw thread on each paw is and the flat thread adjacent with this paw
The direction of portion's adaptation.When this structure makes plane nut rotation, by the two of its two side ends flat thread portions, synchronous drive
Two casing pressure claw assemblies realize clamping or releases cable.
In the present embodiment, current transformer 7 is ring current transformer；It is recessed that plane nut periphery wall is provided with a positioning
Groove, this current transformer is fixedly installed in detent, and plane nut fastening part is in the periphery positioned at this detent both sides
It is respectively provided with one on wall and twist fastening part.
The present embodiment, when carrying out clamp operation, twists plane nut using inner hexagon spanner, shfting wrench or fork spanner；
Plane nut, in reciprocating rotation, drives its flat thread portion reciprocating rotation, and then by engaging the driving screw thread of adaptation
Portion drives synchronous drive two casing pressure claw assemblies, because each paw can only edge under the guide and limit effect of radially-directed spacing hole 12
The radial direction matrix slip pipe moves back and forth, so that the move mode of each paw is close to each other or remote towards slip pipe center
From thus clamping or unclamping the electric power cable in clamp hole 5.
The present embodiment passes through cable clamping to be arranged at the longitudinal center line of matrix slip pipe, and its gravity centre distribution is more closed
Reason, when on for high-altitude overhead power line, is conducive to mitigating vibration；In addition, the present embodiment is driven by flat thread portion
Paw clamps electric power cable, compares with clamping electric power cable by traditional bolt assembly, particularly excellent in anti-loosening effect,
The reliability of long-term work is effectively ensured.
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, matrix, plane nut, paw assembly, plug summation current transformer are respectively positioned in the cavity of this elastic water-proof set；Elastic water-proof
It is filled with insulation oils and fatss in the cavity of set.
In the present embodiment, two casing pressure claw assemblies are clamped on same cable, have the effect of dual fail-safe, even if wherein a set of
Go wrong in use, also another set of its service behaviour of guarantee.
The present embodiment is due to carrying press claw type retaining mechanism it is not necessary to reserved installation position is it is easy to install, and has preferably
Anti-loosening effect, the relatively high and stable reliability of firm intensity.The threephase cable that the present embodiment can be pointed in three clamp holes enters
Row has the monitor in real time of non-zero-sequence current, finds leak current fault with timely.The present embodiment can be used for high-altitude power circuit, height presses off
Pass, box-type substation and switch cubicle.
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 high-tension electricity zero sequence current mutual inductor it is characterised in that：Including matrix, plane nut, two sets of paw groups
Part, a plug and a current transformer；Matrix is provided with slip pipe and the radially-directed spacing hole being arranged on slip pipe；Each paw
In a corresponding radially-directed spacing hole, each paw is provided with driving threaded portion；Plane nut is set in the outer of matrix slip pipe
On perisporium, the both sides of two casing pressure claw assemblies separation plane nuts；The two side ends of plane nut are respectively provided with a flat thread portion, respectively
Flat thread portion is adapted to the driving threaded portion adjoining each paw in a set of paw assembly；Plug is located in matrix slip pipe tube chamber；
It is provided with three arc clip slots along base tube is central axial, each arc clip slot just sets to a corresponding paw inwall on the periphery wall of plug
Put, the inwall clamping of each arc clip slot and a corresponding paw forms a clamp hole；The periphery wall of plug is provided with three edges
The support positioning flange of matrix slip pipe radially protruding, the internal perisporium of matrix slip pipe is provided with three positioning runners, and each support positions
Flange stretches in a corresponding positioning runner away from a side of plug, thus plug is positioned in the tube chamber of matrix slip pipe；
Also include elastic water-proof set；The two ends of this elastic water-proof set are equipped with cable perforation；Matrix, plane nut, paw assembly, plug
Summation current transformer is 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；Plane
Nut drives two flat thread portion reciprocating rotations of its two side ends, so the synchronous each paw driving in two casing pressure claw assemblies to
Slip pipe center close to each other or away from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620190327.4U CN205992457U (en) | 2016-03-11 | 2016-03-11 | High-tension electricity zero sequence current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620190327.4U CN205992457U (en) | 2016-03-11 | 2016-03-11 | High-tension electricity zero sequence current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205992457U true CN205992457U (en) | 2017-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620190327.4U Expired - Fee Related CN205992457U (en) | 2016-03-11 | 2016-03-11 | High-tension electricity zero sequence current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205992457U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114639857A (en) * | 2020-12-15 | 2022-06-17 | 深圳市诚捷智能装备股份有限公司 | Lamination machine |
-
2016
- 2016-03-11 CN CN201620190327.4U patent/CN205992457U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114639857A (en) * | 2020-12-15 | 2022-06-17 | 深圳市诚捷智能装备股份有限公司 | Lamination machine |
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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 |