CN105609295A - High-voltage zero-sequence current transformer with relatively good anti-looseness effect - Google Patents
High-voltage zero-sequence current transformer with relatively good anti-looseness effect Download PDFInfo
- Publication number
- CN105609295A CN105609295A CN201610097586.7A CN201610097586A CN105609295A CN 105609295 A CN105609295 A CN 105609295A CN 201610097586 A CN201610097586 A CN 201610097586A CN 105609295 A CN105609295 A CN 105609295A
- Authority
- CN
- China
- Prior art keywords
- slip pipe
- paw
- matrix
- current transformer
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- 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
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
- H01F2038/305—Constructions with toroidal magnetic core
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
The invention discloses a high-voltage zero-sequence current transformer with a relatively good anti-looseness effect. The high-voltage transformer comprises a base body, a flat nut, an axial retainer ring, press claws, a core rod and a current transformer body, wherein the base body is provided with a slide tube, radial guide limiting holes, stopping tables and annular clamping grooves; each press claw is provided with a press plate part, a guide slide block part and a drive thread part; each guide slide block part is formed along the radial direction of the slide tube of the base body; each drive thread part is arranged on the corresponding guide slide block part; each drive thread part is arranged at one side end, adjacent to the flat nut, of the corresponding guide slide block part; the flat nut is rotationally arranged on the outer circumference wall of the slide tube of the base body; the flat nut is provided with a plane thread part; the core rod is located in a tube cavity of the slide tube of the base body and is provided with arc-shaped clamping grooves; each arc-shaped clamping groove and corresponding one arc-shaped groove are clamped to form a wire clamping hole; the current transformer body comprises a mounting pipe and a main annular transformer body; the main annular transformer body sleeves the mounting pipe; and the flat nut drives the plane thread part thereof to rotate in a reciprocating manner, so that the press claws are driven to be close to one another or far away from one another towards the center of the slide tube. The high-voltage zero-sequence current transformer has a relatively good anti-looseness effect
Description
Technical field
The invention belongs to power technology field, be specifically related to a kind of high pressure zero sequence current mutual inductance with better anti-loosening performanceDevice.
Background technology
The general principle of zero-sequence current protection is based on Kirchhoff's current law (KCL): the telegram in reply stream that flows into arbitrary node in circuitAlgebraical sum equal zero. In circuit and the normal situation of electrical equipment, the vector of each phase current equals zero, therefore,The secondary side winding no signal output of zero sequence current mutual inductor, executive component is failure to actuate. In the time there is electric shock or leak current faultThe vector of each phase current non-vanishing, fault current makes to produce magnetic flux, zero-sequence current in the iron core of zero sequence current mutual inductorThe electric current that transformer produces is zero-sequence current. When protection mechanism receives this zero sequence current signal, can be according to electrical leakage quantityTake corresponding protection action.
Mostly the mounting means of existing zero sequence current mutual inductor is to adopt flange install fixing or adopt bonding mode to fix, itsInstallation site generally needs reserved, therefore make its application be subject to more restriction.
Summary of the invention
The object of this invention is to provide and be a kind ofly convenient to install location, effectively prevent loosening high pressure zero sequence current mutual inductor.
The technical scheme that realizes the object of the invention is: a kind of high pressure zero sequence current mutual inductor with better anti-loosening performance,Comprise matrix, plane nut, axial back-up ring, paw, plug summation current transformer; Matrix is provided with slip pipe, is arranged on cunningRadially-directed spacing hole on pipe, be arranged on the gear platform on slip pipe periphery wall and be arranged on the annular snap on slip pipe periphery wallGroove; Each radially-directed spacing hole comprises guiding slide opening and the anticreep slide opening of connection, guiding slide opening be arranged on matrix slip pipe away fromAxially the edge of a side of back-up ring forms a breach; Each paw is provided with pressing plate portion, radially extends to form along matrix slip pipeGuide runner portion and be arranged on the driving threaded portion in guide runner portion; Drive threaded portion to be arranged on the neighbour of guide runner portionConnect a side of plane nut; Each paw guide runner portion be provided be arranged in guiding slide opening guide part, be positioned at anticreep slide openingIn anti-delinking part and be positioned at the limiting section in matrix slip pipe outside; Axially back-up ring is fixed on matrix slip pipe periphery wallIn annular slot; Plane nut rotation is arranged on the periphery wall of matrix slip pipe, and at gear platform with axially between back-up ring;Plane nut is provided with for driving threaded portion to engage adaptive flat thread portion with each paw in abutting connection with a side of gear platform; PlugBe arranged in matrix slip pipe tube chamber; On the periphery wall of plug, be axially arranged with arc clip slot along base tube center, each arc clip slot is just rightDeep-slotted chip breaker setting on a corresponding paw inwall, each arc clip slot and a corresponding deep-slotted chip breaker clamping form a clampHole; Current transformer comprises mounting pipe and is set in the annular current transformer body in mounting pipe; One side of mounting pipe is provided withThe external screw thread connector protruding vertically, matrix slip pipe is provided with and external screw thread connector away from the inwall of a side of gear platformAdaptive internal thread; Mounting pipe is spirally connected by external screw thread connector and matrix slip pipe; Gear platform is positioned at base shaft one end upwards,Axially back-up ring is positioned at the base shaft other end upwards; Plane nut is ring-type, and plane nut adjacent shafts is to a side of back-up ringWith axial back-up ring slip adjacency; The quantity of paw is identical with the quantity of radially-directed spacing hole; Plane nut drives its planeThreaded portion reciprocating rotation, so drive each paw towards slip pipe center close to each other or away from.
The present invention has positive effect: (1) zero sequence current mutual inductor of the present invention is owing to carrying press claw type retaining mechanism,Do not need reserved installation position, be easy to install, and have good anti-loosening effect, firmly intensity is higher and reliable and stable.
Brief description of the drawings
Fig. 1 is that one of the present invention is partly cutd open structural representation;
Fig. 2 is a kind of perspective view of zero sequence current mutual inductor shown in Fig. 1;
Fig. 3 is a kind of front view of zero sequence current mutual inductor shown in Fig. 1;
Fig. 4 is that zero sequence current mutual inductor shown in Fig. 1 removes a kind of explosive view after current transformer.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of high pressure zero sequence current mutual inductor with better anti-loosening performance, sees shown in Fig. 1 to Fig. 4,Comprise matrix 1, plane nut 2, axial back-up ring 3, paw 4, plug 6 summation current transformers 8.
Matrix is provided with slip pipe 11, be arranged on radially-directed spacing hole 12 on slip pipe, be arranged on the edge on slip pipe periphery wallThe slip pipe gear platform 13 that radially evagination forms and be arranged on slip pipe periphery wall along the slip pipe annular slot that radially indent forms14; The quantity of radially-directed spacing hole and gear platform is all four, and gear platform is positioned at base shaft one end upwards, axially back-up ring positionIn the base shaft other end upwards;
The quantity of paw 4 is identical with the quantity of radially-directed spacing hole 12, is also four, and each paw is positioned at corresponding oneIn radially-directed spacing hole 12, each paw under the guide and limit effect of radially-directed spacing hole along the footpath of matrix slip pipe 11To reciprocatingly sliding;
The guide runner portion 43 that each paw is provided with pressing plate portion 41, radially extend to form along matrix slip pipe 11 and being arranged on leadsTo the driving threaded portion 44 in slide section; Drive threaded portion 44 to be arranged on a side of guide runner portion adjacent flat nut;The inwall of pressing plate portion is curved, forms a deep-slotted chip breaker 45.
Axially back-up ring 3 is fixed in the annular slot 14 on matrix slip pipe 11 periphery walls;
Plane nut 2 is ring-type, and plane nut sleeve is located on the periphery wall of matrix slip pipe 11, and is positioned at gear platform 13 and axleBetween back-up ring 3; The internal perisporium of plane nut is and the smooth inner wall of matrix slip pipe periphery wall adaptation, outside plane nutPerisporium is provided with fastening part 21, and plane nut is provided with flat thread portion 22 in abutting connection with a side of gear platform, in flat thread portionBe provided with archimedean spiral groove, it is adaptive that flat thread portion engages with the driving threaded portion of paw, plane nut adjacent shafts toOne side of back-up ring and axial back-up ring slip adjacency; The fastening part 21 of the present embodiment midplane nut is arranged on plane spiral shellMultiple binding grooves on female periphery wall, the plurality of binding groove is evenly distributed on plane nut periphery wall.
In the present embodiment, each radially-directed spacing hole 12 comprises guiding slide opening 121 and anticreep slide opening 122, and guiding slide opening is establishedPut the edge away from a side of axial back-up ring at matrix slip pipe, form a breach, anticreep slide opening and guiding slide opening are communicated with,Anticreep slide opening and guiding slide opening are combined to form T font hole;
Each paw guide runner portion 43 be provided be arranged in guiding slide opening guide part 431, be arranged in the anti-delinking part of anticreep slide opening432 and be positioned at the limiting section 433 in matrix slip pipe outside, guide part 431, anti-delinking part 432 and the limiting section of each paw433 cross sectional shapes that are combined to form are I-shaped; The guide part 431 of each paw and anti-delinking part 432 are along the footpath of matrix slip pipeTo running through each paw, the inwall of the inwall of the guide part 431 of each paw, the inwall of anti-delinking part 432 and pressing plate portion 41 altogetherFace; Drive threaded portion to be arranged on a side wall of anti-delinking part adjacent flat nut, the shape of anti-delinking part and anticreep slide opening are suitableJoin; Drive threaded portion to protrude and be arranged on a side wall of anti-delinking part adjacent flat nut, make to drive threaded portion not moveMove to anticreep slide opening.
The present embodiment, in the time of assembling, can first be located at plane nut sleeve on matrix slip pipe, and clamping is axial back-up ring well; Again along baseRadially direction from outside to inside of body slip pipe, fills in a corresponding radially-directed spacing hole the guide part of each paw and anti-delinking partIn 12, the driving threaded portion of paw is crimped in the periphery of plane nut flat thread portion, turn plane nut,Can make each paw close to each other towards matrix slip pipe center.
Plug 6 is arranged in matrix slip pipe tube chamber; On the periphery wall of plug 6, be axially arranged with four arc clip slots along base tube center61; Each arc clip slot just arranges the deep-slotted chip breaker 45 on a corresponding paw inwall, each arc clip slot and a corresponding arcThe clamping of shape groove forms a clamp hole 5, so the present embodiment forms four clamp holes 5 altogether, can be used for clamping four simultaneouslyCable; The periphery wall of plug is provided with four supporting and location flanges 62 that radially protrude along matrix slip pipe, in matrix slip pipePerisporium is provided with four positioning runners 15, and each supporting and location flange stretches into a corresponding positioning runner away from a side of plugIn, thereby plug is positioned in the tube chamber of matrix slip pipe.
Current transformer is fixedly installed on matrix slip pipe, and arranges with one heart with matrix slip pipe; Current transformer 8 comprises peaceTubulature 81 and be set in the annular current transformer body 82 in mounting pipe; One side of mounting pipe 81 is provided with vertically and protrudesExternal screw thread connector 811, matrix slip pipe is provided with and external screw thread connector 811 adaptations away from the inwall of a side of gear platformInternal thread 16; Mounting pipe is spirally connected by external screw thread connector and matrix slip pipe.
The present embodiment is provided with four clamp holes, but in use, only uses wherein three clamp holes to clamp three phase cables,Current Transformer 8 is carried out leakage current to these three phase cables and is detected in real time, to find in time leak current fault.
The present embodiment, in the time carrying out clamp operation, adopts hook type spanner (also claiming hook spanner) operation, and hook type spanner catches onAfter binding groove on plane nut periphery wall, can drive plane nut around matrix slip pipe reciprocating rotation; Plane nut is back and forthIn rotation, drive its flat thread portion reciprocating rotation, and then drive each paw by the driving threaded portion of engaging adaptation with it,Because each paw can only be along radially the moving back and forth of matrix slip pipe under the guide and limit effect of radially-directed spacing hole 12,Thereby the move mode that makes each paw be close to each other towards slip pipe center or away from, thereby clamp or unclamp and be positioned at clampElectric power cable in hole 5.
The present embodiment is by clamping cable the centerline that is arranged on matrix slip pipe, and its gravity centre distribution is comparatively reasonable, works as useOn the overhead power line of high-altitude time, be conducive to alleviate vibration; In addition, the present embodiment drives paw by flat thread portionClamp electric power cable, clamp electric power cable with the bolt assembly by traditional and compare, particularly excellent in anti-loosening effect,Effectively ensure the reliability of long-term work.
The present embodiment can be used as high pressure zero sequence current mutual inductor and uses.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not to thisThe restriction of working of an invention mode. For those of ordinary skill in the field, also can on the basis of the above descriptionTo make other changes in different forms. Here without also giving exhaustive to all embodiments. And thisThe apparent variation that belongs to connotation of the present invention a bit and extended out or variation still belong to protection scope of the present invention.
Claims (1)
1. a high pressure zero sequence current mutual inductor with better anti-loosening performance, is characterized in that: comprise matrix, flatFace nut, axial back-up ring, paw, plug summation current transformer; Matrix is provided with slip pipe, is arranged on the radial guiding on slip pipeTo spacing hole, be arranged on the gear platform on slip pipe periphery wall and be arranged on the annular slot on slip pipe periphery wall; Each radially-directedSpacing hole comprises guiding slide opening and the anticreep slide opening of connection, and guiding slide opening is arranged on the side of matrix slip pipe away from axial back-up ringThe edge of end forms a breach; The guide runner portion that each paw is provided with pressing plate portion, radially extend to form along matrix slip pipe withAnd be arranged on the driving threaded portion in guide runner portion; Drive threaded portion to be arranged on one of guide runner portion adjacent flat nutSide; Each paw guide runner portion be provided be arranged in guiding slide opening guide part, be arranged in anticreep slide opening anti-delinking part andBe positioned at the limiting section in matrix slip pipe outside; Axially back-up ring is fixed in the annular slot on matrix slip pipe periphery wall; FlatFace nut rotation is arranged on the periphery wall of matrix slip pipe, and at gear platform with axially between back-up ring; Plane nut is in abutting connection with gearOne side of platform is provided with for driving threaded portion to engage adaptive flat thread portion with each paw; Plug is positioned at matrix slip pipe pipeIn chamber; On the periphery wall of plug, be axially arranged with arc clip slot along base tube center, each arc clip slot is just in a corresponding pawDeep-slotted chip breaker setting on wall, each arc clip slot and a corresponding deep-slotted chip breaker clamping form a clamp hole; Current transformer bagDraw together mounting pipe and be set in the annular current transformer body in mounting pipe; One side of mounting pipe is provided with the outer spiral shell protruding verticallyLine connector, matrix slip pipe is provided with and the internal thread of external screw thread connector adaptation away from the inwall of a side of gear platform; PeaceTubulature is spirally connected by external screw thread connector and matrix slip pipe; Gear platform is positioned at base shaft one end upwards, and axially back-up ring is positioned at baseThe axon other end upwards; Plane nut is ring-type, and plane nut adjacent shafts is to a side of back-up ring and axially back-up ring slipAdjacency; The quantity of paw is identical with the quantity of radially-directed spacing hole; Plane nut drives its flat thread portion reciprocating rotation,And then drive each paw towards slip pipe center close to each other or away from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097586.7A CN105609295A (en) | 2016-01-15 | 2016-01-15 | High-voltage zero-sequence current transformer with relatively good anti-looseness effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097586.7A CN105609295A (en) | 2016-01-15 | 2016-01-15 | High-voltage zero-sequence current transformer with relatively good anti-looseness effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105609295A true CN105609295A (en) | 2016-05-25 |
Family
ID=55989143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610097586.7A Withdrawn CN105609295A (en) | 2016-01-15 | 2016-01-15 | High-voltage zero-sequence current transformer with relatively good anti-looseness effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105609295A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524463A (en) * | 2019-09-29 | 2019-12-03 | 安徽工业大学 | A kind of multi-purpose sleeve and its application method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2793486Y (en) * | 2005-03-28 | 2006-07-05 | 郑春开 | Clasp cable device |
| CN202917711U (en) * | 2012-11-13 | 2013-05-01 | 北京振兴计量测试研究所 | Fastening fixture for tail cover of electric connector |
| CN203679326U (en) * | 2014-01-24 | 2014-07-02 | 华南理工大学 | Novel flexible four-jaw chuck |
| CN204276947U (en) * | 2014-12-01 | 2015-04-22 | 温岭市深澳机床厂(普通合伙) | Scroll chuck |
| CN204724882U (en) * | 2015-06-01 | 2015-10-28 | 冯炯培 | A kind of three-jaw clamping device |
-
2016
- 2016-01-15 CN CN201610097586.7A patent/CN105609295A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2793486Y (en) * | 2005-03-28 | 2006-07-05 | 郑春开 | Clasp cable device |
| CN202917711U (en) * | 2012-11-13 | 2013-05-01 | 北京振兴计量测试研究所 | Fastening fixture for tail cover of electric connector |
| CN203679326U (en) * | 2014-01-24 | 2014-07-02 | 华南理工大学 | Novel flexible four-jaw chuck |
| CN204276947U (en) * | 2014-12-01 | 2015-04-22 | 温岭市深澳机床厂(普通合伙) | Scroll chuck |
| CN204724882U (en) * | 2015-06-01 | 2015-10-28 | 冯炯培 | A kind of three-jaw clamping device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524463A (en) * | 2019-09-29 | 2019-12-03 | 安徽工业大学 | A kind of multi-purpose sleeve and its application method |
| CN110524463B (en) * | 2019-09-29 | 2024-03-22 | 安徽工业大学 | Multipurpose sleeve and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160525 |