CN105551750A - High-voltage zero sequence current transformer having relatively high loosening prevention performance - Google Patents
High-voltage zero sequence current transformer having relatively high loosening prevention performance Download PDFInfo
- Publication number
- CN105551750A CN105551750A CN201610097589.0A CN201610097589A CN105551750A CN 105551750 A CN105551750 A CN 105551750A CN 201610097589 A CN201610097589 A CN 201610097589A CN 105551750 A CN105551750 A CN 105551750A
- Authority
- CN
- China
- Prior art keywords
- slip pipe
- current transformer
- paw
- matrix
- slide opening
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
-
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/04—Arrangements or devices for relieving mechanical tension
Abstract
The invention discloses a high-voltage zero sequence current transformer having relatively high loosening prevention performance. The high-voltage zero sequence current transformer comprises a substrate, a planar nut, an axial baffle ring, press claws, a core rod and a current transformer, wherein the substrate is provided with a sliding tube, radial guide limitation holes, baffler tables and an annular clamping groove, wherein each press claw is provided with a press plate part, a guide sliding block part extending along a radial direction of the sliding tube of the substrate and a driving thread part arranged on the guide sliding block part, the driving thread part is arranged at one side end, adjacent to the planar nut, of the guide sliding block part, the planar nut is rotatably arranged on the peripheral wall of the sliding tube of the substrate and provided with a planar thread part, the core rod is arranged in a sliding tube cavity of the substrate and provided with arc clamping grooves, each arc clamping groove and a corresponding arc groove are clamped to form a wire shearing hole, the current transformer comprises an installation tube and an annular current transformer body sleeved on the installation tube, and the planar nut drives the planar thread part to do reciprocating motion so as to further drive each press claw to get close to or derivate from the center of the sliding tube. The high-voltage zero sequence current transformer has a relatively high loosening prevention effect.
Description
Technical field
The invention belongs to technical field of electric power, be specifically related to a kind of high pressure zero sequence current mutual inductor of anti-loosening better performances.
Background technology
The general principle of zero-sequence current protection is based on Kirchhoff's current law (KCL): the algebraical sum flowing into the telegram in reply stream of any node in circuit equals zero.Under circuit and the normal situation of electric equipment, the vector of each phase current equals zero, and therefore, the secondary side winding no signal of zero sequence current mutual inductor exports, and executive component is failure to actuate.The vector of each phase current when there is electric shock or leak current fault is non-vanishing, and fault current makes to produce magnetic flux in the iron core of zero sequence current mutual inductor, and the electric current that zero sequence current mutual inductor produces is zero-sequence current.When protection mechanism receives this zero sequence current signal, corresponding protection act can be taked according to electrical leakage quantity.
Mostly the mounting means of existing zero sequence current mutual inductor is to adopt flange install fixing or adopt bonding mode to fix, and its installation site generally needs to reserve, therefore makes its application be subject to more restriction.
Summary of the invention
The object of this invention is to provide a kind of being convenient to location to be installed, effectively to prevent the high pressure zero sequence current mutual inductor that loosens.
The technical scheme realizing the object of the invention is: a kind of high pressure zero sequence current mutual inductor of anti-loosening better performances, comprises matrix, plane nut, axial back-up ring, paw, plug summation current transformer; Matrix is provided with slip pipe, the radially-directed spacing hole be arranged on slip pipe, the annular slot that is arranged on the gear platform on slip pipe periphery wall and is arranged on slip pipe periphery wall; Each radially-directed spacing hole comprises guiding slide opening and the anticreep slide opening of connection, and guiding slide opening is arranged on matrix slip pipe and forms a breach away from the edge of a side of axial back-up ring; Each paw is provided with pressing plate portion, along the radial guide runner portion extended to form of matrix slip pipe and the driving threaded portion be arranged in guide runner portion; Threaded portion is driven to be arranged on a side of guide runner portion adjacent flat nut; Each paw guide runner portion is provided with the guide part being arranged in guiding slide opening, the anti-delinking part being arranged in anticreep slide opening and the limiting section be positioned at outside matrix slip pipe; Axial back-up ring is fixed in the annular slot on matrix slip pipe periphery wall; Plane nut rotation is arranged on the periphery wall of matrix slip pipe, and between gear platform and axial back-up ring; The side that plane nut adjoins gear platform is provided with for driving threaded portion to engage adaptive flat thread portion with each paw; Plug is arranged in matrix slip pipe tube chamber; The periphery wall of plug is axially arranged with arc clip slot along base tube center, and each arc clip slot is just arranged the deep-slotted chip breaker on a corresponding paw inwall, and each arc clip slot and a corresponding deep-slotted chip breaker clamping form a clamp hole; Current transformer comprises mounting pipe and is set in the annular current transformer body in mounting pipe; One side of mounting pipe is provided with the external screw thread connector protruded vertically, and matrix slip pipe is provided with the internal thread with external screw thread connector adaptation away from the inwall of a side of gear platform; Mounting pipe is spirally connected by external screw thread connector and matrix slip pipe; Flat thread portion is provided with archimedean spiral groove, and the driving threaded portion of each paw is the helicla flute with this archimedean spiral groove adaptation; Anticreep slide opening and guiding slide opening are combined to form T-shaped hole; The cross sectional shape that the guide part of each paw, anti-delinking part and limiting section are combined to form is I-shaped; Plane nut drives its flat thread 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, owing to carrying press claw type retaining mechanism, does not need reserved installation position, is easy to install, and has good anti-loosening effect, and firm intensity is higher and reliable and stable.
Accompanying drawing explanation
Fig. 1 is that one of the present invention partly cuts open structural representation;
A kind of perspective view that Fig. 2 is zero sequence current mutual inductor shown in Fig. 1;
A kind of front view that Fig. 3 is zero sequence current mutual inductor shown in Fig. 1;
Fig. 4 removes a kind of explosive view after current transformer for zero sequence current mutual inductor shown in Fig. 1.
Embodiment
(embodiment 1)
The present embodiment is a kind of high pressure zero sequence current mutual inductor of anti-loosening better performances, sees shown in Fig. 1 to Fig. 4, comprises matrix 1, plane nut 2, axial back-up ring 3, paw 4, plug 6 summation current transformer 8.
Matrix is provided with slip pipe 11, the radially-directed spacing hole 12 be arranged on slip pipe, be arranged on the gear platform 13 formed along the radial evagination of slip pipe on slip pipe periphery wall and the annular slot 14 formed along the radial indent of slip pipe be arranged on slip pipe periphery wall; The quantity of radially-directed spacing hole and gear platform is all four, and gear platform is positioned at base shaft one end upwards, and axial back-up ring is positioned at 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 arranged in a corresponding radially-directed spacing hole 12, and the radial direction of each paw along matrix slip pipe 11 under the guide and limit effect of radially-directed spacing hole reciprocatingly slides;
Each paw is provided with pressing plate portion 41, along the guide runner portion 43 that matrix slip pipe 11 radial direction extends to form and the driving threaded portion 44 that is arranged in guide runner portion; Threaded portion 44 is driven to be arranged on a side of guide runner portion adjacent flat nut; The inwall in pressing plate portion is curved, forms a deep-slotted chip breaker 45.
Axial back-up ring 3 is fixed in the annular slot 14 on matrix slip pipe 11 periphery wall;
Plane nut 2 is ring-type, and plane nut sleeve is located on the periphery wall of matrix slip pipe 11, and between gear platform 13 and axial back-up ring 3; The internal perisporium of plane nut is the smooth inner wall with matrix slip pipe periphery wall adaptation, the periphery wall of plane nut is provided with fastening part 21, the side that plane nut adjoins gear platform is provided with flat thread portion 22, flat thread portion is provided with archimedean spiral groove, adaptation then engages with the driving threaded portion of paw in flat thread portion, and plane nut adjoins a side of axial back-up ring and axial back-up ring slides adjacent; The fastening part 21 of the present embodiment midplane nut is arranged on the multiple binding grooves on plane nut periphery wall, and 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 arranged on the edge of matrix slip pipe away from a side of axial back-up ring, forms a breach, anticreep slide opening is communicated with guiding slide opening, and anticreep slide opening and guiding slide opening are combined to form T-shaped hole;
Each paw guide runner portion 43 is provided with and is arranged in the guiding guide part 431 of slide opening, the anti-delinking part 432 being arranged in anticreep slide opening and the limiting section 433 be positioned at outside matrix slip pipe, and the cross sectional shape that the guide part 431 of each paw, anti-delinking part 432 and limiting section 433 are combined to form is I-shaped; Each paw is run through along the radial direction of matrix slip pipe in the guide part 431 of each paw and anti-delinking part 432, and the inwall in the inwall of the guide part 431 of each paw, the inwall of anti-delinking part 432 and pressing plate portion 41 is coplanar; 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 adaptation; Drive threaded portion to protrude to be arranged on the side end wall of anti-delinking part adjacent flat nut, make to drive threaded portion can not move in anticreep slide opening.
The present embodiment is when assembling, and can first plane nut sleeve is located on matrix slip pipe, clamping is axial back-up ring well; Again along the radial direction from outside to inside of matrix slip pipe, the guide part of each paw and anti-delinking part are filled in a corresponding radially-directed spacing hole 12, the driving threaded portion of paw is made to be crimped on the periphery in 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; The periphery wall of plug 6 is axially arranged with four arc clip slots 61 along base tube center; Each arc clip slot is just arranged the deep-slotted chip breaker 45 on a corresponding paw inwall, and each arc clip slot and a corresponding deep-slotted chip breaker clamping form a clamp hole 5, so the present embodiment forms four clamp holes 5 altogether, can be used for clamping four cables simultaneously; The periphery wall of plug is provided with four supporting and location flanges 62 protruded along matrix slip pipe radial direction, the internal perisporium of matrix slip pipe is provided with four positioning runners 15, each supporting and location 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.
Current transformer is fixedly installed on matrix slip pipe, and arranges with one heart with matrix slip pipe; The annular current transformer body 82 that current transformer 8 comprises mounting pipe 81 and is set in mounting pipe; One side of mounting pipe 81 is provided with the external screw thread connector 811 protruded vertically, and matrix slip pipe is provided with the internal thread 16 with external screw thread connector 811 adaptation away from the inwall of a side of gear platform; 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 clamp three phase cables with wherein three clamp holes, Current Transformer 8 is carried out leakage current to these three phase cables and detected in real time, with Timeliness coverage leak current fault.
The present embodiment is when carrying out clamp operation, and adopt hook type spanner (also claiming hook spanner) operation, hook type spanner can drive plane nut around matrix slip pipe reciprocating rotation after catching on the binding groove on plane nut periphery wall; Plane nut is in reciprocating 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 move back and forth along the radial direction of matrix slip pipe under the guide and limit effect of radially-directed spacing hole 12, thus make the move mode of each paw be close to each other towards slip pipe center or away from, thus clamping or unclamp the electric power cable being arranged in clamp hole 5.
The present embodiment is by being arranged on the centerline of matrix slip pipe cable clamping, and its gravity centre distribution is comparatively reasonable, when on the overhead power line of high-altitude, is conducive to alleviating vibration; In addition, the present embodiment drives paw clamping electric power cable by flat thread portion, compares with by traditional bolt assembly clamping electric power cable, particularly excellent in anti-loosening effect, effectively ensures the reliability of long-term work.
The present embodiment can use as high pressure zero sequence current mutual inductor.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And these belong to connotation of the present invention the apparent change of extending out or variation still belong to protection scope of the present invention.
Claims (1)
1. a high pressure zero sequence current mutual inductor for anti-loosening better performances, is characterized in that: comprise matrix, plane nut, axial back-up ring, paw, plug summation current transformer; Matrix is provided with slip pipe, the radially-directed spacing hole be arranged on slip pipe, the annular slot that is arranged on the gear platform on slip pipe periphery wall and is arranged on slip pipe periphery wall; Each radially-directed spacing hole comprises guiding slide opening and the anticreep slide opening of connection, and guiding slide opening is arranged on matrix slip pipe and forms a breach away from the edge of a side of axial back-up ring; Each paw is provided with pressing plate portion, along the radial guide runner portion extended to form of matrix slip pipe and the driving threaded portion be arranged in guide runner portion; Threaded portion is driven to be arranged on a side of guide runner portion adjacent flat nut; Each paw guide runner portion is provided with the guide part being arranged in guiding slide opening, the anti-delinking part being arranged in anticreep slide opening and the limiting section be positioned at outside matrix slip pipe; Axial back-up ring is fixed in the annular slot on matrix slip pipe periphery wall; Plane nut rotation is arranged on the periphery wall of matrix slip pipe, and between gear platform and axial back-up ring; The side that plane nut adjoins gear platform is provided with for driving threaded portion to engage adaptive flat thread portion with each paw; Plug is arranged in matrix slip pipe tube chamber; The periphery wall of plug is axially arranged with arc clip slot along base tube center, and each arc clip slot is just arranged the deep-slotted chip breaker on a corresponding paw inwall, and each arc clip slot and a corresponding deep-slotted chip breaker clamping form a clamp hole; Current transformer comprises mounting pipe and is set in the annular current transformer body in mounting pipe; One side of mounting pipe is provided with the external screw thread connector protruded vertically, and matrix slip pipe is provided with the internal thread with external screw thread connector adaptation away from the inwall of a side of gear platform; Mounting pipe is spirally connected by external screw thread connector and matrix slip pipe; Flat thread portion is provided with archimedean spiral groove, and the driving threaded portion of each paw is the helicla flute with this archimedean spiral groove adaptation; Anticreep slide opening and guiding slide opening are combined to form T-shaped hole; The cross sectional shape that the guide part of each paw, anti-delinking part and limiting section are combined to form is I-shaped; Plane nut drives its flat thread portion reciprocating rotation, so drive each paw towards slip pipe center close to each other or away from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097589.0A CN105551750A (en) | 2016-01-15 | 2016-01-15 | High-voltage zero sequence current transformer having relatively high loosening prevention performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097589.0A CN105551750A (en) | 2016-01-15 | 2016-01-15 | High-voltage zero sequence current transformer having relatively high loosening prevention performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105551750A true CN105551750A (en) | 2016-05-04 |
Family
ID=55830880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610097589.0A Withdrawn CN105551750A (en) | 2016-01-15 | 2016-01-15 | High-voltage zero sequence current transformer having relatively high loosening prevention performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105551750A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114473052A (en) * | 2022-03-17 | 2022-05-13 | 中国人民解放军第五七一九工厂 | High-pressure compressor reaming tool and high-pressure compressor rotor reaming method |
Citations (4)
| 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 |
| CN204724882U (en) * | 2015-06-01 | 2015-10-28 | 冯炯培 | A kind of three-jaw clamping device |
-
2016
- 2016-01-15 CN CN201610097589.0A patent/CN105551750A/en not_active Withdrawn
Patent Citations (4)
| 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 |
| 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 |
|---|---|---|---|---|
| CN114473052A (en) * | 2022-03-17 | 2022-05-13 | 中国人民解放军第五七一九工厂 | High-pressure compressor reaming tool and high-pressure compressor rotor reaming method |
| CN114473052B (en) * | 2022-03-17 | 2024-01-23 | 中国人民解放军第五七一九工厂 | Reaming tool and reaming method for high-pressure compressor rotor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105551750A (en) | High-voltage zero sequence current transformer having relatively high loosening prevention performance | |
| CN105551751A (en) | High-voltage zero sequence current transformer having relatively high loosening prevention performance | |
| CN105609295A (en) | High-voltage zero-sequence current transformer with relatively good anti-looseness effect | |
| CN105575593A (en) | High-voltage zero-sequence current transformer easy to install | |
| CN105575595A (en) | Zero-sequence current transformer | |
| CN105761892A (en) | High-voltage zero sequence current transformer | |
| CN105742023A (en) | High-voltage and zero-sequence current transformer with relatively good anti-looseness performance | |
| CN105551719A (en) | High-voltage zero-sequence current mutual inductor with relatively good anti-loosening property | |
| CN105575594A (en) | Easy-to-install high-voltage zero-sequence current transformer | |
| CN105551720A (en) | High-voltage zero-sequence current mutual inductor convenient for installation | |
| CN105551744A (en) | Improved high-voltage current transformer | |
| CN105551758A (en) | Zero-sequence current transformer | |
| CN105551745A (en) | Improved high-voltage current transformer | |
| CN105551727A (en) | High-voltage zero-sequence current power transformer with relatively good wire clamping fastness | |
| CN105551743A (en) | Improved power zero-sequence current transformer | |
| CN105575640A (en) | Middle-high-voltage zero-sequence current transformer | |
| CN105575596A (en) | Middle-high voltage zero-sequence current transformer | |
| CN105551742A (en) | Power zero-sequence current transformer | |
| CN105551726A (en) | Zero-sequence current power transformer with relatively good wire clamping fastness | |
| CN105551760A (en) | Zero-sequence current transformer with relatively good anti-looseness performance | |
| CN105551723A (en) | Zero-sequence current power transformer with relatively good wire clamping fastness | |
| CN105609291A (en) | Improved three-phase power zero-sequence current transformer | |
| CN105575641A (en) | Zero sequence current mutual inductor for preventing cable from being loosened | |
| CN105551746A (en) | Improved zero-sequence current transformer | |
| CN105609289A (en) | High-voltage power zero-sequence current transformer |
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 |
Application publication date: 20160504 |
|
| WW01 | Invention patent application withdrawn after publication |