CN106057411A - High-voltage power zero-sequence current transformer for transmission and distribution line - Google Patents
High-voltage power zero-sequence current transformer for transmission and distribution line Download PDFInfo
- Publication number
- CN106057411A CN106057411A CN201610294060.8A CN201610294060A CN106057411A CN 106057411 A CN106057411 A CN 106057411A CN 201610294060 A CN201610294060 A CN 201610294060A CN 106057411 A CN106057411 A CN 106057411A
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- Prior art keywords
- base tube
- clamp
- stem
- heat
- conducting block
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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
-
- 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
- H01F27/402—Association of measuring or protective means
-
- 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
-
- 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
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Abstract
The invention discloses a high-voltage power zero-sequence current transformer for a transmission and distribution line. The high-voltage power zero-sequence current transformer comprises a comprises a base tube, a core column, a bolt, a current transformer body and a clamping plate assembly, wherein the base tube comprises a press tube part and a seal plate part; the seal plate part and the press tube part are fixedly arranged oppositely; a limiting slide hole and threading holes are formed in the seal plate part; crimping bosses are arranged on the inner wall of the press tube part; a conical crimping surface is arranged on the outer circumference wall of the core column; the clamping plate assembly comprises wire clamping plates; the inner wall of each wire clamping plate is provided with a guide slide table; each wire clamping plate is provided with a guide slide chute; each crimping boss is provided with a limiting slide column which is matched with the corresponding guide slide chute; each wire clamping plate is arranged oppositely to one corresponding crimping boss; the current transformer body comprises an annular induction body; various wire clamping holes are located in a hole cavity of the annular induction body; the bolt is rotated to push the wire clamping plates to move along the radial direction of the press tube part; an installation screw hole which runs through a wall body of the press tube part along the radial direction of the base tube is arranged in the base tube; and a temperature sensing device is fixedly arranged in the installation screw hole. The high-voltage power zero-sequence current transformer has a real-time temperature monitoring function.
Description
Technical field
The invention belongs to technical field of electric power, be specifically related to a kind of electric line high-tension electricity zero sequence current mutual inductance
Device.
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.When occurring to get an electric shock or each during leak current fault
The vector of phase current is not zero, and fault current makes to produce in the iron core of zero sequence current mutual inductor magnetic flux, zero sequence current mutual inductor
Produced electric current is zero-sequence current.When protection mechanism receives this zero sequence current signal, can take accordingly according to electrical leakage quantity
Protection act.
Mostly the mounting means of existing zero sequence current mutual inductor is to use flange install fixing or use bonding mode to fix,
Its installation site is it is generally required to reserve, so that the application of zero sequence current mutual inductor is by more restriction.
Summary of the invention
It is an object of the invention to provide a kind of electric line being easily installed location and there is real time temperature control function
Use high-tension electricity zero sequence current mutual inductor.
The technical scheme realizing the object of the invention is: a kind of electric line high-tension electricity zero sequence current mutual inductor, bag
Include base tube, stem stem, bolt, current transformer and cleat assembly；Base tube includes pressure pipe portion and shrouding portion；Shrouding portion and pressure pipe portion phase
To being fixedly installed；Shrouding portion is provided with spacing slide opening and through wires hole；The inwall in pressure pipe portion is provided with at least three crimping boss；Stem stem
Be shaped as frustum, the periphery wall of stem stem is axially arranged with at least three jacking sliding groove along pressure pipe portion and as each jacking sliding
The taper electrolysis of groove bottom wall；The center of stem stem is axially arranged with centre bore along pressure pipe portion；Cleat assembly includes that at least three is pressed from both sides
Line plate；The inwall of clamp is provided with the guiding slide unit adaptive with jacking sliding groove；Each clamp is provided with guide chute；Each crimping is convex
Platform is provided with the spacing traveller by adaptive with guide chute thus spacing clamp moving direction；Clamp is just to corresponding one
Crimping boss is arranged, and each clamp and a corresponding crimping boss clamping form a clamp hole；Each through wires hole in shrouding portion
Connect with a corresponding clamp hole；Bolt includes the body of rod, the fastening part being arranged on body of rod one end, is arranged on body of rod periphery wall
Male threaded joint and and the nut of male threaded joint adaptation；The fastening position of bolt in stem stem away from the one of shrouding portion
Side, the body of rod of bolt sequentially passes through the centre bore of stem stem and the spacing slide opening in shrouding portion, and nut is twisted solid at the spiral shell stretching out shrouding portion
On the male threaded joint of bolt；Current transformer includes toroidal inductive body；Each clamp hole is respectively positioned on the hole of toroidal inductive body
In chamber；Swivel bolt pulls stem stem to move towards the direction close to shrouding portion；Stem stem is by the taper electrolysis in jacking sliding groove
Push the guiding slide unit of each clamp, and then promote each clamp to make its being moved radially outward along pressure pipe portion, thus clamp position
Electric power cable in clamp hole；Base tube is provided with the installation screw extending radially through pressure pipe portion wall body along base tube；In this installation screw
It is fixed with temperature sensing device；Temperature sensing device includes the metal shell with storage tank, the temperature being arranged in storage tank
Spend sensor, for temperature sensor being crimped on the spring on storage tank diapire and being used for the screwed pipe plug of limit spring；Temperature
Degree sensor includes the heat-conducting block, the thermo-sensitive resistor being arranged in heat-conducting block that use heat conductive insulating elastomeric material to make, is arranged on
Two on heat-conducting block connect electric mortiser post；Heat-conducting block can reciprocatingly slide in the storage tank of metal shell；Heat-conducting block is away from base tube
Enclosing formation cannelure between external diameter and the internal perisporium of storage tank of the other end of mandrel line, spring is positioned in this cannelure and overlaps
It is located on heat-conducting block one end away from base tube central axis；The center of screwed pipe plug is provided with tube chamber；Screwed pipe plug is by outside it
Threaded area is fixedly installed in cannelure；Spring is connected on heat-conducting block close to one end of base tube central axis, and spring is away from base
The other end of tube hub axis is connected on screwed pipe plug；On heat-conducting block two connect electric mortiser post and are positioned at the tube chamber of screwed pipe plug
In；Metal shell is provided with as puncturing the heat conduction boss used close to one end of base tube central axis, and metal shell is away from base tube
One end of central axis is provided with interior hexagonal and twists groove；The periphery wall of metal shell is provided with the external screw thread adaptive with installation screw,
The internal perisporium of storage tank is provided with internal threaded regions；Heat conduction boss is to protrude shape close to one end of base tube central axis from metal shell
The sharp tooth boss become.
In such scheme, screwed pipe plug is provided with external screw thread district close to the periphery wall of one end of base tube central axis, and this is outer
The internal threaded regions of threaded area and metal shell is adaptive；Outside screwed pipe plug is provided with away from the periphery wall of one end of base tube central axis
Hexagonal twists portion.
The present invention has a positive effect: the zero sequence current mutual inductor of (1) present invention owing to carrying press claw type retaining mechanism,
Need not reserved installation position, it is easy to install.(2) structure more compact and reasonable；Stem stem and bolt connect threadably, and pass through
The taper electrolysis of jacking sliding groove crimps each clamp makes it clamp electric power cable, and its operation is the most laborsaving.(3) in anticreep wedge shape
Under the engagement locking of tooth and anticreep tooth, also there is preferable anti-loosening effect.(4) pressure is extended radially through owing to base tube is provided with along base tube
The installation screw of pipe portion wall body, is fixed with temperature sensing device in installation screw；So the present invention also has real time temperature prison
Control function.
Accompanying drawing explanation
Fig. 1 is that the one of the first structure of the present invention partly cuts open structural representation；
Fig. 2 is a kind of perspective view after zero sequence current mutual inductor shown in Fig. 1 removes current transformer；
Fig. 3 is a kind of perspective view when another angle is observed of the zero sequence current mutual inductor shown in Fig. 2；
Fig. 4 is that shown in Fig. 2, the one of zero sequence current mutual inductor faces structural representation；
Fig. 5 is the A-A sectional view of Fig. 4；
Fig. 6 is a kind of perspective view of base tube in zero sequence current mutual inductor shown in Fig. 2；
Fig. 7 is that shown in Fig. 6, the one of base tube partly cuts open structural representation；
Fig. 8 is a kind of explosive view of zero sequence current mutual inductor shown in Fig. 2；
Fig. 9 is a kind of explosive view when another angle is observed of the zero sequence current mutual inductor shown in Fig. 2；
Figure 10 is that the one of the second structure of the present invention partly cuts open structural representation；
Figure 11 is the close-up schematic view in Figure 10 at B；
Figure 12 is that the one of the third structure of the present invention partly cuts open structural representation.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of electric line high-tension electricity zero sequence current mutual inductor, as shown in Fig. 1 to Fig. 9, including
Base tube 1, stem stem 2, bolt 3, current transformer 7 and cleat assembly 4；Described base tube 1, stem stem 2 and cleat assembly 4 all use insulation
Material is made.
Base tube 1 includes pressure pipe portion 11 and is positioned at the shrouding portion 12 of one end, pressure pipe portion；The shape in pressure pipe portion is circular, pressure pipe portion
Inwall be provided with crimping boss 13, crimping boss inwall be provided with arcuate groove 14.Base tube is made into integration, and crimping boss is from pressure
Projecting radially inwards formation on the inwall in pipe portion, crimping boss axially penetrates through the inwall in pressure pipe portion along pressure pipe portion.
In the present embodiment, pressure pipe portion is provided with four crimping boss, and these four crimping boss are uniform along the circumference in pressure pipe portion
It is distributed on the inwall in pressure pipe portion.
The two side of each crimping boss is provided with two spacing travellers 15 protruded towards center, pressure pipe portion, spacing traveller edge
Pressure pipe portion is radially arranged.
Shrouding portion 12 is provided with through wires hole 16 and spacing slide opening 17；In the present embodiment, shrouding portion is provided with a spacing slide opening
With four through wires holes；Spacing slide opening is arranged on the center in shrouding portion, and through wires hole is uniformly arranged on the outer circumferential side of spacing hole.
Stem stem be shaped as frustum, the periphery wall of stem stem is axially arranged with along pressure pipe portion four jacking sliding grooves 21, respectively pushes up
Pressure chute is additionally provided with multiple anticreep chisel teeth 22；The center of stem stem is axially arranged with centre bore 23 along pressure pipe portion.Each jacking sliding
The diapire of groove is as taper electrolysis 211.
Cleat assembly includes four clamps 41；The inwall of each clamp is provided with the guiding slide unit adaptive with jacking sliding groove
411, guide axially arranged along pressure pipe portion of slide unit；The outer wall of each clamp is provided with arc clip slot 412, the both sides of each clamp
Guide chute 413 it is additionally provided with on wall；The spacing traveller of each crimping boss is positioned in a corresponding guide chute so that clamp edge
Spacing traveller direction is moved；In the present embodiment, each spacing traveller being radially arranged along pressure pipe portion, therefore clamp is only along pressure pipe
The radial direction in portion moves back and forth.
In the present embodiment, the two side of each clamp is axially respectively arranged at the two ends with a positive stop lug boss 417, these two limits
Position boss clamping forms described guide chute 413.
In the present embodiment, each slide unit that guides has the taper stress surface adaptive with stem stem jacking sliding groove bottom wall, and this taper is subject to
Power face substantially also serves as the inwall 414 of clamp；When the guiding slide unit of each clamp is positioned in stem stem jacking sliding groove, clamp
The outer wall 415 of plate is parallel with the inwall 131 of a corresponding crimping boss；A corresponding crimping boss is just arranged by each clamp,
Each arc clip slot and a corresponding arcuate groove clamping form a clamp hole 5, and the present embodiment forms four clamp holes altogether；Shrouding portion
On each through wires hole the most corresponding clamp hole is arranged.
Stem stem is under the spacing mating reaction guiding slide unit of its jacking sliding groove and clamp, it is impossible in the transfer of pressure pipe portion
Dynamic, only along moving axially of pressure pipe portion.
The inwall 414 of each conical outer wall guiding slide unit namely clamp is provided with multiple anticreep tooth 416, and each anticreep tooth is used
Engage in the anticreep chisel teeth with stem stem, anti-skidding anti-retrogression.
Current transformer includes toroidal inductive body 71 and intelligent control module 72；In the present embodiment, intelligent control module
72 make and have the ring-type of onesize vestibule with toroidal inductive body, and annular perception sensing body and intelligent control module are side by side
Combination is set and forms annular, on the overall sheathed outer wall being fixed on base tube of current transformer.In concrete practice, as long as making institute
There is clamp hole to be positioned in the vestibule of toroidal inductive body, namely have only to so that cable passes the vestibule of toroidal inductive body
?.
The present embodiment has four clamp holes, but in concrete practice, can only three electric power cables of clamping, unnecessary one
Clamp hole is standby or is used for clamping other auxiliary wire rod；During three electric power cables of clamping, toroidal inductive body may be used for sense
Answer zero sequence current signal, find leak current fault in time, now can use as a zero sequence current mutual inductor.
In concrete practice, it is possible to the present embodiment is made the structure only with three clamp holes.
Intelligent control module includes wireless transmit/receive units, and intelligent control module is by wireless transmit/receive units toroidal inductive originally
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 being arranged on body of rod one end, the external screw thread that is arranged on body of rod periphery wall even
Connect portion 33 and and the nut 34 of male threaded joint adaptation；The fastening position of bolt in stem stem away from the side in shrouding portion, spiral shell
The body of rod of bolt sequentially passes through the centre bore of stem stem and the spacing slide opening in shrouding portion, until male threaded joint stretches out shrouding portion, spiral shell
Cap is twisted solid on the male threaded joint of bolt stretching out shrouding portion.
The external diameter of bolt fastening part is more than the aperture of stem stem centre bore, and the external diameter of nut is more than the hole of the spacing slide opening in shrouding portion
Footpath.
Swivel bolt pulls stem stem to move towards the direction close to shrouding portion；Stem stem is crimped by the taper in jacking sliding groove
Face pushes the guiding slide unit of each clamp, and then promotes each clamp to make its being moved radially outward along pressure pipe portion, thus clamps
It is positioned at the electric power cable in clamp hole.
The present embodiment, in order to promote chuck strength, is also provided with multiple puncture 6 in each arcuate groove and arc clip slot；Concrete next
Saying, each puncture is along the radially protruding in core pipe portion.
In the present embodiment, each paw is the integral piece made by injection mo(u)lding, and each puncture is made when injection mo(u)lding；?
In concrete practice, puncture may be used without alternate manner and makes；In each arcuate groove, such as it is provided with multiple installation draw-in groove, then adopting
The puncture sheet being made from an insulative material is inlaid in corresponding one and installs in draw-in groove；Puncture sheet 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, it is also possible to use respectively
The mode being threaded in arc clip slot and arcuate groove, also can improving clamping sigma compactness energy.
In concrete practice, it is also possible to use in the mode being threaded in each arc clip slot and arcuate groove, also can carry
Rise clamping performance.
The present embodiment has following Advantageous Effects: (1) operation is the most laborsaving, has preferable anti-loosening effect.
(embodiment 2)
The present embodiment and above-described embodiment 1 are essentially identical, and difference is: as shown in Figure 10 and Figure 11, and base tube 1 is provided with
The installation screw 18 of pressure pipe portion 11 wall body is extended radially through along base tube；This installation screw is fixed with temperature sensing device 8；
Temperature sensing device includes the metal shell 81 with storage tank 811 that metal material makes, is arranged on storage tank
In temperature sensor 82, the spring 83 for temperature sensor is crimped on storage tank diapire, the spiral shell that is used for limit spring
Pipe plug 84；
Metal shell is provided with as puncturing the heat conduction boss 813 used, metal-back close to one end 812 of base tube central axis
Body is provided with interior hexagonal away from one end 814 of base tube central axis and twists groove 815；The periphery wall of metal shell is provided with and installs spiral shell
The external screw thread 816 that hole is adaptive, the internal perisporium of storage tank is provided with internal threaded regions 817；Heat conduction boss is close to base from metal shell
The sharp tooth boss formed is protruded in one end 812 of tube hub axis；
Temperature sensor includes using the heat-conducting block 821 that heat conductive insulating elastomeric material is made, the U-shaped being arranged in heat-conducting block
Thermo-sensitive resistor 822, two be arranged on heat-conducting block connect electric mortiser post 823；Heat-conducting block can be reciprocal in the storage tank of metal shell
Slide；Heat-conducting block is connected on the diapire of storage tank close to one end of base tube central axis；Two connect electric mortiser post protrusion and are arranged on
On the heat-conducting block other end away from base tube central axis；
Heat-conducting block is away from enclosing formation annular between external diameter and the internal perisporium of storage tank of the other end of base tube central axis
Groove 100, spring is positioned in this cannelure and is set on heat-conducting block one end away from base tube central axis；
Screwed pipe plug is provided with external screw thread district 841 close to the periphery wall of one end of base tube central axis, this external screw thread district and
The internal threaded regions 817 of metal shell is adaptive；Screwed pipe plug is provided with outer-hexagonal away from the periphery wall of one end of base tube central axis
Twist portion 842；The center of screwed pipe plug is provided with tube chamber 843；Screwed pipe plug is fixedly installed on cannelure by its external screw thread district
In；
Spring is connected on heat-conducting block close to one end of base tube central axis, and spring is away from the other end of base tube central axis
It is connected on screwed pipe plug；On heat-conducting block two connect electric mortiser post and are positioned in the tube chamber 843 of screwed pipe plug.
The internal perisporium of intelligent control module 72 is provided with inwardly projecting two and connects electric bushing (being not drawn on figure), respectively connects electricity
Socket inserts corresponding one and connects in electric bushing, so that temperature sensor is connected with the middle control circuit in intelligent control module.
This structure has the following advantages, owing to metal shell is easily deformed when extruding cable, and extrusion temperature sensor
Heat-conducting block, if heat-conducting block does not has mobile space, then easily pressurized deformation damages；The present embodiment, can by arranging spring
Heat-conducting block is crimped on the diapire of metal shell storage tank so that it is can correctly predict cable and junction, base tube pressure pipe portion
Real time temperature；Can also be when, after metal shell compressive deformation, reserving mobile space to heat-conducting block, thus prevent heat-conducting block by pressurized
Damage；This structure has preferably Practical Performance.
In concrete practice, multiple installation screw and multiple temperature sensing device can be set on base tube, for often
One cable and the temperature with junction, base tube pressure pipe portion monitor in real time, thus realize the further intelligence that power network monitoring runs
Energyization.
(embodiment 3)
The present embodiment and embodiment 2 are essentially identical, and difference is: as shown in Figure 12, and the bolt in the present embodiment is not
Including nut 34 again, the present embodiment is provided for the interior spiral shell adaptive with bolt male threaded joint in the spacing slide opening in shrouding portion
Stricture of vagina district 171；The body of rod of bolt is spirally connected through the centre bore of stem stem, the male threaded joint of bolt and this internal threaded regions.
The present embodiment saves a nut, and structure more simplifies.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not right
The restriction of embodiments of the present invention.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.And these
Belong to obvious change that the connotation of the present invention extended out or variation still falls within protection scope of the present invention.
Claims (3)
1. an electric line high-tension electricity zero sequence current mutual inductor, it is characterised in that: include base tube, stem stem, bolt, electricity
Current transformer and cleat assembly；Base tube includes pressure pipe portion and shrouding portion；Shrouding portion and pressure pipe portion are relatively fixed setting；Shrouding portion sets
Limited location slide opening and through wires hole；The inwall in pressure pipe portion is provided with at least three crimping boss；Stem stem be shaped as frustum, stem stem
Periphery wall on be axially arranged with at least three jacking sliding groove and the taper electrolysis as each jacking sliding groove bottom wall along pressure pipe portion；
The center of stem stem is axially arranged with centre bore along pressure pipe portion；Cleat assembly includes at least three clamp；The inwall of clamp sets
There is the guiding slide unit adaptive with jacking sliding groove；Each clamp is provided with guide chute；Each crimping boss is provided with by and guides
Chute is adaptive thus the spacing traveller of spacing clamp moving direction；A corresponding crimping boss is just arranged by clamp, respectively presss from both sides
Line plate and a corresponding crimping boss clamping form a clamp hole；Each through wires hole and a corresponding clamp hole in shrouding portion connect
Logical；Bolt include the body of rod, the fastening part being arranged on body of rod one end, the male threaded joint being arranged on body of rod periphery wall and and
The nut that male threaded joint is adaptive；The fastening position of bolt is in stem stem away from the side in shrouding portion, and the body of rod of bolt is worn successively
Crossing the centre bore of stem stem and the spacing slide opening in shrouding portion, nut is twisted solid on the male threaded joint of bolt stretching out shrouding portion；
Current transformer includes toroidal inductive body；Each clamp hole is respectively positioned in the vestibule of toroidal inductive body；Swivel bolt pulls core
Post moves towards the direction close to shrouding portion；The guiding that stem stem pushes each clamp by the taper electrolysis in jacking sliding groove is sliding
Platform, and then promote each clamp to make its being moved radially outward along pressure pipe portion, thus clamping is positioned at the electric power cable in clamp hole；
Base tube is provided with the installation screw extending radially through pressure pipe portion wall body along base tube；This installation screw is fixed with temperature sensing device；
Temperature sensing device include having the metal shell of storage tank, the temperature sensor being arranged in storage tank, for temperature is passed
Sensor is crimped on the spring on storage tank diapire and the screwed pipe plug for limit spring；Temperature sensor includes using heat conduction exhausted
The heat-conducting block that edge elastomeric material is made, the thermo-sensitive resistor being arranged in heat-conducting block, be arranged on heat-conducting block two connect electric mortiser post；
Heat-conducting block can reciprocatingly slide in the storage tank of metal shell；Heat-conducting block is away from the external diameter of the other end of base tube central axis and appearance
Putting and enclose formation cannelure between the internal perisporium of groove, spring is positioned in this cannelure and is set in heat-conducting block away from base tube central shaft
On one end of line；The center of screwed pipe plug is provided with tube chamber；Screwed pipe plug is fixedly installed in cannelure by its external screw thread district；
Spring is connected on heat-conducting block close to one end of base tube central axis, and spring is connected to spiral shell away from the other end of base tube central axis
On pipe plug；Two on heat-conducting block connect in the tube chamber that electric mortiser post is positioned at screwed pipe plug；Metal shell is close to base tube central axis
One end be provided with as puncturing the heat conduction boss used, metal shell is provided with interior hexagonal away from one end of base tube central axis and twists
Groove；The periphery wall of metal shell is provided with the external screw thread adaptive with installation screw, and the internal perisporium of storage tank is provided with internal threaded regions；
Heat conduction boss is to protrude the sharp tooth boss formed close to one end of base tube central axis from metal shell.
Electric line high-tension electricity zero sequence current mutual inductor the most according to claim 1, it is characterised in that: screwed pipe blocks up
Head is provided with external screw thread district close to the periphery wall of one end of base tube central axis, this external screw thread district and the internal threaded regions of metal shell
Adaptive.
Electric line high-tension electricity zero sequence current mutual inductor the most according to claim 2, it is characterised in that: screwed pipe blocks up
Head is provided with outer-hexagonal away from the periphery wall of one end of base tube central axis and twists portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294060.8A CN106057411A (en) | 2016-05-02 | 2016-05-02 | High-voltage power zero-sequence current transformer for transmission and distribution line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294060.8A CN106057411A (en) | 2016-05-02 | 2016-05-02 | High-voltage power zero-sequence current transformer for transmission and distribution line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106057411A true CN106057411A (en) | 2016-10-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610294060.8A Pending CN106057411A (en) | 2016-05-02 | 2016-05-02 | High-voltage power zero-sequence current transformer for transmission and distribution line |
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| CN (1) | CN106057411A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953285Y (en) * | 2006-09-16 | 2007-09-26 | 江山市三江互感器有限公司 | Opening and closing current mutual inductor |
| CN101419096A (en) * | 2008-12-12 | 2009-04-29 | 王涛 | Temperature sensor fixing structure on high-pressure electrified conductor and electrified installation tool thereof |
| JP5789038B1 (en) * | 2014-12-01 | 2015-10-07 | 恒和工業株式会社 | Electric wire connector |
| CN105355406A (en) * | 2015-11-24 | 2016-02-24 | 广东电网有限责任公司电力科学研究院 | Opening current transformer capable of being installed in powered-on mode |
-
2016
- 2016-05-02 CN CN201610294060.8A patent/CN106057411A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953285Y (en) * | 2006-09-16 | 2007-09-26 | 江山市三江互感器有限公司 | Opening and closing current mutual inductor |
| CN101419096A (en) * | 2008-12-12 | 2009-04-29 | 王涛 | Temperature sensor fixing structure on high-pressure electrified conductor and electrified installation tool thereof |
| JP5789038B1 (en) * | 2014-12-01 | 2015-10-07 | 恒和工業株式会社 | Electric wire connector |
| CN105355406A (en) * | 2015-11-24 | 2016-02-24 | 广东电网有限责任公司电力科学研究院 | Opening current transformer capable of being installed in powered-on mode |
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Application publication date: 20161026 |