CN105679498B - A kind of high-tension electricity zero sequence current mutual inductor for electric line - Google Patents
A kind of high-tension electricity zero sequence current mutual inductor for electric line Download PDFInfo
- Publication number
- CN105679498B CN105679498B CN201610093703.2A CN201610093703A CN105679498B CN 105679498 B CN105679498 B CN 105679498B CN 201610093703 A CN201610093703 A CN 201610093703A CN 105679498 B CN105679498 B CN 105679498B
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- China
- Prior art keywords
- pressure pipe
- clamp
- pipe portion
- stem
- wall
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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.)
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Classifications
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- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- 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
- H01F38/38—Instruments transformers for polyphase ac
Abstract
The invention discloses a kind of high-tension electricity zero sequence current mutual inductors for electric line, including base tube, stem, bolt, current transformer and cleat assembly；Base tube includes pressure pipe portion and sealing plate portion；The fixed setting opposite with pressure pipe portion of sealing plate portion；Sealing plate portion is equipped with limit slide opening and threading hole；The inner wall in pressure pipe portion is equipped with crimping boss；Stem periphery wall is equipped with taper electrolysis；Centre bore is axially arranged with along pressure pipe portion at the center of stem；Cleat assembly includes clamp；The inner wall of clamp is equipped with the guiding slide unit moved for limiting stem along pressure pipe portion axial reciprocating；Each clamp is equipped with the guide chute radially moved back and forth for limiting clamping plate along pressure pipe portion；Each crimping boss is equipped with and the limit traveller of guide chute adaptation；The corresponding crimping boss setting of clamp face；Current transformer includes toroidal inductive ontology；Each clamp hole is respectively positioned in the vestibule of toroidal inductive ontology；Rotate each clamp of bolt pusher moving radially along pressure pipe portion.Structure of the invention more compact and reasonable, be easily installed.
Description
Technical field
The invention belongs to technical field of electric power, and in particular to a kind of high-tension electricity zero-sequence current for electric line is mutual
Sensor.
Background technique
The basic principle of zero-sequence current protection is based on Kirchhoff's current law (KCL): flowing into the telegram in reply of any node in circuit
The algebraical sum of stream is equal to zero.Under route and the normal situation of electrical equipment, the vector sum of each phase current is equal to zero, therefore, zero
The secondary side winding no signal of sequence current transformer exports, and executive component is failure to actuate.It is each when electric shock or leak current fault occurs
The vector sum of phase current is not zero, and fault current makes to generate magnetic flux in the iron core of zero sequence current mutual inductor, 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.
Summary of the invention
The object of the present invention is to provide it is a kind of be easily installed and positioned, with preferable firmness for electric line
High-tension electricity zero sequence current mutual inductor.
Realizing the technical solution of the object of the invention is: a kind of high-tension electricity zero sequence current mutual inductance for electric line
Device, including base tube, stem, bolt, current transformer and cleat assembly；Base tube includes pressure pipe portion and sealing plate portion；Sealing plate portion and pressure
The relatively fixed setting of pipe portion；Sealing plate portion is equipped with limit slide opening and threading hole；It is convex that the inner wall in pressure pipe portion is equipped at least three crimping
Platform；The shape of stem be it is pyramidal, be axially arranged at least three press sliding slots and conduct along pressure pipe portion on the periphery wall of stem
The taper electrolysis of each jacking sliding groove bottom wall；Centre bore is axially arranged with along pressure pipe portion at the center of stem；Cleat assembly includes extremely
Few three clamps；The inner wall of clamp is equipped with and presses the guiding slide unit of sliding slot adaptation；Each clamp is equipped with guide chute；
Each crimping boss is equipped with the limit traveller by limiting clamp moving direction with guide chute adaptation；Clamp face
Corresponding crimping boss setting, each clamp and corresponding crimping boss clamping form a clamp hole；In sealing plate portion
Each threading hole is connected to a corresponding clamp hole；Bolt includes the body of rod, the fastening part that body of rod one end is arranged in, is arranged outside the body of rod
Male threaded joint on peripheral wall and the nut with male threaded joint adaptation；The fastening position of bolt is in stem far from sealing plate
The side in portion, the body of rod of bolt sequentially pass through the centre bore of stem and the limit slide opening in sealing plate portion, and nut is twisted solid in stretching sealing plate
On the male threaded joint of the bolt in portion；Current transformer includes toroidal inductive ontology；Each clamp hole is respectively positioned on toroidal inductive sheet
In the vestibule of body；Base tube is made into integration, and the shape in pressure pipe portion is round；Crimp boss from the inner wall in pressure pipe portion radially inward
Protrusion is formed, and crimping boss axially penetrates through the inner wall in pressure pipe portion along pressure pipe portion；When the quantity for crimping boss is multiple, crimp convex
Platform is along the inner wall that the circumferential direction in pressure pipe portion is evenly distributed on pressure pipe portion；Limit slide opening is arranged at the center in sealing plate portion, threading hole
It is uniformly arranged on the peripheral side of limit hole；It is oriented to axial direction setting of the slide unit along pressure pipe portion；Radial direction of the traveller along pressure pipe portion is limited to set
It sets, clamp is moved radially along pressure pipe portion；Rotating bolt pulls stem mobile towards the direction close to sealing plate portion；Stem passes through
Taper electrolysis in press sliding slot pushes the guiding slide unit of each clamp, and then each clamp is pushed to make it along the diameter in pressure pipe portion
To being displaced outwardly, to clamp the electric power cable being located in clamp hole.
The present invention has the effect of positive: (1) zero sequence current mutual inductor of the invention due to carry press claw type retaining mechanism,
Reserved installation position is not needed, is easily installed.(2) structure more compact and reasonable；Stem and bolt threadably connect, and pass through
The taper electrolysis of press sliding slot, which crimps each clamp, makes it clamp electric power cable, operates more laborsaving.(3) in anticreep wedge
Under the engagement locking of shape tooth and anticreep tooth, also there is preferable anti-loosening effect.
Detailed description of the invention
Fig. 1 is a kind of half section structure diagram of the first structure of the invention；
Fig. 2 is that zero sequence current mutual inductor shown in Fig. 1 removes a kind of schematic perspective view after current transformer；
Fig. 3 be Fig. 2 shown in zero sequence current mutual inductor from another angle when a kind of schematic perspective view；
Fig. 4 is a kind of positive structure diagram of zero sequence current mutual inductor shown in Fig. 2；
Fig. 5 is the A-A cross-sectional view of Fig. 4；
Fig. 6 is a kind of schematic perspective view of base tube in zero sequence current mutual inductor shown in Fig. 2；
Fig. 7 is a kind of half section structure diagram of base tube shown in Fig. 6；
Fig. 8 is a kind of explosive view of zero sequence current mutual inductor shown in Fig. 2；
Fig. 9 be Fig. 2 shown in zero sequence current mutual inductor from another angle when a kind of explosive view；
Figure 10 is that second of structure of the present invention removes a kind of half section structure diagram after current transformer.
Specific embodiment
(embodiment 1)
The present embodiment is a kind of high-tension electricity zero sequence current mutual inductor for electric line, as shown in Fig. 1 to Fig. 9,
Including base tube 1, stem 2, bolt 3, current transformer 7 and cleat assembly 4；The base tube 1, stem 2 and cleat assembly 4 are all made of
Insulating materials is made.
Base tube 1 includes pressure pipe portion 11 and the sealing plate portion 12 positioned at pressure pipe portion one end；The shape in pressure pipe portion is round, pressure pipe portion
Inner wall be equipped with crimping boss 13, crimp boss inner wall be equipped with arc groove 14.Base tube is made into integration, and crimps boss from pressure
It projects radially inwards to be formed on the inner wall of pipe portion, crimping boss axially penetrates through the inner wall in pressure pipe portion along pressure pipe portion.
In the present embodiment, set in pressure pipe portion there are four boss is crimped, four crimping boss are along the circumferential uniform of pressure pipe portion
It is distributed on the inner wall in pressure pipe portion.
It sets on the two sidewalls of each crimping boss there are two the limit traveller 15 protruded towards pressure pipe portion center, limits traveller edge
Pressure pipe portion is arranged radially.
Sealing plate portion 12 is equipped with threading hole 16 and limit slide opening 17；In the present embodiment, sealing plate portion is equipped with a limit slide opening
With four threading holes；Limit slide opening is arranged at the center in sealing plate portion, and threading hole is uniformly arranged on the peripheral side of limit hole.
The shape of stem be it is pyramidal, be axially arranged with four press sliding slots 21 along pressure pipe portion on the periphery wall of stem, each top
Multiple anticreep chisel teeths 22 are additionally provided in pressure sliding slot；Centre bore 23 is axially arranged with along pressure pipe portion at the center of stem.Each jacking sliding
The bottom wall of slot is as taper electrolysis.
Cleat assembly includes four clamps 41；The inner wall of each clamp is equipped with and presses the guiding slide unit of sliding slot adaptation
411, axial direction setting of the guiding slide unit along pressure pipe portion；The outer wall of each clamp is equipped with arc clip slot 412, the two sides of each clamp
Guide chute 413 is additionally provided on wall；The limit traveller of each crimping boss is located in a corresponding guide chute, so that clamp edge
It is mobile to limit traveller direction；It is each to limit traveller being arranged radially along pressure pipe portion in the present embodiment, therefore clamp can only be along pressure pipe
The radial of portion moves back and forth.
In the present embodiment, the axial ends on the two sidewalls of each clamp is respectively provided with a positive stop lug boss 417, this two limits
Position boss clamping forms the guide chute 413.
In the present embodiment, each slide unit that is oriented to has and the taper stress surface of stem jacking sliding groove bottom wall adaptation, the taper by
Power face is substantially also as the inner wall of clamp 414；When the guiding slide unit of each clamp is located in stem press sliding slot, clamp
The outer wall 415 of plate is parallel with the inner wall 131 of a corresponding crimping boss；The corresponding crimping boss setting of each clamp face,
Each arc clip slot and a corresponding arc groove clamping form a clamp hole 5, and the present embodiment forms four clamp holes altogether；Sealing plate portion
On the also face corresponding clamp hole setting of each threading hole.
Stem, cannot be in the transfer of pressure pipe portion under its limit mating reaction for pressing the guiding slide unit of sliding slot and clamp
It is dynamic, it can only be along the axial movement in pressure pipe portion.
The conical outer wall of each guiding slide unit namely the inner wall 414 of clamp are equipped with multiple anticreep teeth 416, and each anticreep tooth is used
In the anticreep wedge shape tooth engagement with stem, anti-skidding anti-retrogression.
Current transformer includes toroidal inductive ontology 71 and intelligent control module 72；In the present embodiment, intelligent control module
72 are made into the ring-type for having onesize vestibule with toroidal inductive ontology, and annular perception induction ontology and intelligent control module are side by side
Setting combination forms annular, and current transformer is integrally arranged on the outer wall for being fixed on base tube.In concrete practice, as long as making institute
There is clamp hole to be located in the vestibule of toroidal inductive ontology, namely only it is required that cable passes through the vestibule of toroidal inductive ontology
?.
The present embodiment tool is there are four clamp hole, but in concrete practice, can only clamp three electric power cables, and extra one
Clamp hole is spare or for clamping other auxiliary wire rods；When clamping three electric power cables, toroidal inductive ontology can be used for feeling
Zero sequence current signal is answered, finds leak current fault in time, a zero sequence current mutual inductor is can be used as at this time and uses.
In concrete practice, the present embodiment can also being made into only tool, there are three the structures in clamp hole.
Intelligent control module includes wireless transmit/receive units, and intelligent control module is by wireless transmit/receive units toroidal inductive sheet
The current signal that body senses sends distance host to, to realize accurate long-range no worker monitor.
Bolt includes the body of rod 31, the fastening part 32 that body of rod one end is arranged in, the external screw thread being arranged on body of rod periphery wall company
Socket part 33 and the nut 34 being adapted to male threaded joint；The fastening position of bolt is in side of the stem far from sealing plate portion, spiral shell
The body of rod of bolt sequentially passes through the centre bore of stem and the limit slide opening in sealing plate portion, until male threaded joint stretches out sealing plate portion, spiral shell
Cap is twisted solid on the male threaded joint of bolt for stretching out sealing plate portion.
The outer diameter in bolt fastening portion is greater than the aperture of stem centre bore, and the outer diameter of nut is greater than the hole of sealing plate portion limit slide opening
Diameter.
Rotating bolt pulls stem mobile towards the direction close to sealing plate portion；Stem passes through the taper crimping in press sliding slot
Face pushes the guiding slide unit of each clamp, and then each clamp is pushed to make its being moved radially outward along pressure pipe portion, to clamp
Electric power cable in clamp hole.
The present embodiment is equipped with multiple punctures 6 to promote chuck strength also in each arc groove and arc clip slot；It is specific next
It says, each radially protruding punctured along core pipe portion.
In the present embodiment, each claw is the integral piece made of injection molding, and each puncture is made in injection molding；?
In concrete practice, puncture can also be used other way and be made；Such as multiple installation card slots are equipped in each arc groove, then adopting
The puncture piece being made from an insulative material is inlaid in corresponding installation card slot；Puncturing piece includes mounting portion and thorn blade, installation
Portion is inlaid in installation card slot, and thorn blade then exposes installation card slot and forms puncture.It, can also be using each in concrete practice
The mode of screw thread is set in arc clip slot and arc groove, it also can improving clamping sigma compactness energy.
In concrete practice, it can also can also be mentioned using by the way of screw thread is arranged in each arc clip slot and arc groove
It rises and clamps performance.
The present embodiment has following advantageous effects: (1) operation is more laborsaving, has preferable anti-loosening effect.
(embodiment 2)
The present embodiment and embodiment 1 are essentially identical, the difference is that: as shown in Figure 10, the bolt in the present embodiment is not
It again include nut 34, the present embodiment setting in the limit slide opening in sealing plate portion is used for and the interior spiral shell of bolt male threaded joint adaptation
Line area 171；The body of rod of bolt passes through the centre bore of stem, and the male threaded joint of bolt and the internal threaded regions are spirally connected.
The present embodiment saves a nut, and structure more simplifies.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And these
Belong to the obvious changes or variations that connotation of the invention is extended out and still falls within protection scope of the present invention.
Claims (1)
1. a kind of high-tension electricity zero sequence current mutual inductor for electric line, it is characterised in that: including base tube, stem, spiral shell
Bolt, current transformer and cleat assembly；Base tube includes pressure pipe portion and sealing plate portion；The fixed setting opposite with pressure pipe portion of sealing plate portion；Envelope
Plate portion is equipped with limit slide opening and threading hole；The inner wall in pressure pipe portion is equipped at least three crimping boss；The shape of stem is frustum
Shape along pressure pipe portion is axially arranged at least three press sliding slots on the periphery wall of stem and as the taper of each jacking sliding groove bottom wall
Electrolysis；Centre bore is axially arranged with along pressure pipe portion at the center of stem；Cleat assembly includes at least three clamps；Clamp
Inner wall is equipped with and presses the guiding slide unit of sliding slot adaptation；Each clamp is equipped with guide chute；Each crimping boss, which is equipped with, to be passed through
It is adapted to limit the limit traveller of clamp moving direction with guide chute；The corresponding crimping boss of clamp face is set
It sets, the outer wall of clamp is equipped with arc clip slot, and the inner wall for crimping boss is equipped with arc groove, each arc clip slot and one corresponding
Arc groove clamping forms a clamp hole；Each threading hole in sealing plate portion is connected to a corresponding clamp hole；Bolt include the body of rod,
The fastening part of body of rod one end, the male threaded joint being arranged on body of rod periphery wall are set and are adapted to male threaded joint
Nut；The fastening position of bolt in side of the stem far from sealing plate portion, the body of rod of bolt sequentially pass through stem centre bore and
The limit slide opening in sealing plate portion, nut are twisted solid on the male threaded joint of bolt for stretching out sealing plate portion；Current transformer includes ring
Shape incudes ontology；Each clamp hole is respectively positioned in the vestibule of toroidal inductive ontology；Base tube is made into integration, and the shape in pressure pipe portion is round
Shape；Crimping boss projects radially inwards to be formed from the inner wall in pressure pipe portion, crimps boss along pressure pipe portion and axially penetrates through pressure pipe portion
Inner wall；When the quantity for crimping boss is multiple, the inner wall that circumferential direction of the boss along pressure pipe portion is evenly distributed on pressure pipe portion is crimped
On；Limit slide opening is arranged at the center in sealing plate portion, and threading hole is uniformly arranged on the peripheral side of limit hole；Slide unit is oriented to along pressure pipe
The axial setting in portion；Traveller being arranged radially along pressure pipe portion is limited, clamp is moved radially along pressure pipe portion；Bolt is rotated to pull
Stem is mobile towards the direction close to sealing plate portion；Stem pushes the guiding of each clamp by the taper electrolysis in press sliding slot
Slide unit, and then each clamp is pushed to make its being moved radially outward along pressure pipe portion, to clamp the power line being located in clamp hole
Cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093703.2A CN105679498B (en) | 2016-01-15 | 2016-01-15 | A kind of high-tension electricity zero sequence current mutual inductor for electric line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093703.2A CN105679498B (en) | 2016-01-15 | 2016-01-15 | A kind of high-tension electricity zero sequence current mutual inductor for electric line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105679498A CN105679498A (en) | 2016-06-15 |
| CN105679498B true CN105679498B (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610093703.2A Active CN105679498B (en) | 2016-01-15 | 2016-01-15 | A kind of high-tension electricity zero sequence current mutual inductor for electric line |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2712063A1 (en) * | 1977-03-15 | 1978-09-21 | Siemens Ag | INDUCTIVE, GAS- OR LIQUID-ISOLATED VOLTAGE CONVERTER |
| CN202159088U (en) * | 2011-08-04 | 2012-03-07 | 大庆电业局 | Remote online monitoring system of electric transmission line lightning arrester |
| CN102510128A (en) * | 2011-10-27 | 2012-06-20 | 王成楷 | Intelligent electric leakage remote monitoring protector of low-voltage power grid |
| CN104374964A (en) * | 2014-11-05 | 2015-02-25 | 江苏省电力公司常州供电公司 | Electric energy meter capable of measuring residual currents |
| CN104607681A (en) * | 2013-11-03 | 2015-05-13 | 西安志越机电科技有限公司 | Thin-wall round pipe turning and clamping device |
-
2016
- 2016-01-15 CN CN201610093703.2A patent/CN105679498B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2712063A1 (en) * | 1977-03-15 | 1978-09-21 | Siemens Ag | INDUCTIVE, GAS- OR LIQUID-ISOLATED VOLTAGE CONVERTER |
| CN202159088U (en) * | 2011-08-04 | 2012-03-07 | 大庆电业局 | Remote online monitoring system of electric transmission line lightning arrester |
| CN102510128A (en) * | 2011-10-27 | 2012-06-20 | 王成楷 | Intelligent electric leakage remote monitoring protector of low-voltage power grid |
| CN104607681A (en) * | 2013-11-03 | 2015-05-13 | 西安志越机电科技有限公司 | Thin-wall round pipe turning and clamping device |
| CN104374964A (en) * | 2014-11-05 | 2015-02-25 | 江苏省电力公司常州供电公司 | Electric energy meter capable of measuring residual currents |
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| Publication number | Publication date |
|---|---|
| CN105679498A (en) | 2016-06-15 |
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Effective date of registration: 20181212 Address after: 325600 Wei17 Road, Yanpan Industrial Zone, Yueqing City, Zhejiang Province Applicant after: YUEQING HUAZUN ELECTRIC Co.,Ltd. Address before: Room 704, 5 Building, Ganglong City Commercial Plaza, New Area 556 Changjiang Road, Suzhou High-tech Industrial Development Zone, Jiangsu Province, 215000 Applicant before: Hu Xiaoqing |
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Effective date of registration: 20221220 Address after: 213034 2-1 Chuangye East Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou Changdi Electromechanical Technology Co.,Ltd. Address before: 325600 Wei 17 Road, YanPan Industrial Zone, Yueqing City, Zhejiang Province Patentee before: YUEQING HUAZUN ELECTRIC Co.,Ltd. |