CN105551739A - Middle-high voltage transformer - Google Patents

Middle-high voltage transformer Download PDF

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Publication number
CN105551739A
CN105551739A CN201610097289.2A CN201610097289A CN105551739A CN 105551739 A CN105551739 A CN 105551739A CN 201610097289 A CN201610097289 A CN 201610097289A CN 105551739 A CN105551739 A CN 105551739A
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CN
China
Prior art keywords
paw
slip pipe
slide opening
matrix
radially
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.)
Granted
Application number
CN201610097289.2A
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Chinese (zh)
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CN105551739B (en
Inventor
胡妍
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Henan Xuji Instrument Co Ltd
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Individual
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Priority to CN201610097289.2A priority Critical patent/CN105551739B/en
Publication of CN105551739A publication Critical patent/CN105551739A/en
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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
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)

Abstract

The invention discloses a middle-high voltage transformer. The middle-high voltage transformer comprises a base body, two planar nuts, two sets of pressing claw assemblies and a transformer, wherein the base body is equipped with a sliding pipe, radial guide limiting holes and a baffle table; each set of the pressing claw assembly comprises three pressing claws; three radial guide limiting holes are formed in each of the two ends of the siding pipe of the base body in the axial direction separately; each pressing claw is positioned in one corresponding radial guide limiting hole; each planar nut is adapted with the corresponding one set of pressing claw assembly; each planar nut drives the three pressing claws of the corresponding one set of the pressing claw assembly to move towards the center of the sliding pipe in a manner of being close to each other or far away from each other; each radial guide limiting hole comprises a rectangular sliding hole and an anti-release sliding hole; the rectangular sliding hole is formed in the edge of one side end, far from the baffle table, of the sliding pipe of the base body to form a nick; the anti-release sliding hole is communicated with the rectangular sliding hole; each pressing claw guide sliding block part is provided with a guide part positioned in the rectangular sliding hole, an anti-release part positioned in the anti-release sliding hole, and a limiting part positioned outside the sliding pipe of the base body; and the shape of the anti-release part is adapted with that of the anti-release sliding hole. The middle-high voltage transformer is easy to install and use.

Description

A kind of mesohigh instrument transformer
Technical field
The invention belongs to high-tension electricity technical field, be specifically related to a kind of mesohigh instrument transformer.
Background technology
High-voltage mutual inductor is applicable to large voltage transitions be become in 1kv to 220kv electric power system small voltage or converts big current to small area analysis so that the instrument transformer of measurement, protection, use.
Mostly existing high-voltage mutual inductor is induction instrument transformer, and operation principle is identical with transformer, and basic structure is also iron core and former and deputy winding.The Main Function of high-voltage mutual inductor is as follows: high voltage is converted to low-voltage, and big current converts small area analysis to, after this again for measurement, control, protection.So not only can strengthen measuring instrument from journey, be convenient to instrument standard, reduce control, the voltage and current of proterctive equipment, and instrument and equipment or high-tension circuit are separated, the safety of guarantee instrument, equipment and staff.
Mostly the mounting means of existing high-voltage mutual inductor is to adopt flange install fixing or adopt bonding mode to fix, and its installation site generally needs to reserve, therefore makes the application of high-voltage mutual inductor be subject to more restriction.
Summary of the invention
The object of this invention is to provide a kind of mesohigh instrument transformer being convenient to install location, there is better firmness.
The technical scheme realizing the object of the invention is: a kind of mesohigh instrument transformer, comprises matrix, two plane nuts, two casing pressure claw assemblies and instrument transformers; The gear platform that matrix is provided with slip pipe, is arranged on the radially-directed spacing hole on slip pipe and is arranged on slip pipe periphery wall; Each casing pressure claw assembly comprises three paws; Matrix slip pipe two ends axially respectively arrange three radially-directed spacing holes, and each paw is arranged in a corresponding radially-directed spacing hole, and the radial direction of each paw along matrix slip pipe under the guide and limit effect of radially-directed spacing hole reciprocatingly slides; Each plane nut and corresponding a set of paw assembly adaptation; Each plane nut sleeve is located on the periphery wall of matrix slip pipe, and between gear platform and corresponding a set of paw assembly; The middle part of gear platform is provided with a circular orientation groove, and instrument transformer is fixedly installed in this detent; 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 the side of guide runner portion close to gear platform; The periphery wall of each plane nut is provided with fastening part, and each plane nut is provided with flat thread portion away from a side of gear platform, and adaptation then engages with the driving threaded portion of three paws in corresponding a set of paw assembly in each flat thread portion; Each plane nut drives its flat thread portion reciprocating rotation, so by the driving threaded portion of its engagement adaptation drive three paws in corresponding a set of paw assembly towards slip pipe center close to each other or away from; Each radially-directed spacing hole comprises rectangle slide opening and anticreep slide opening, and rectangle slide opening is arranged on the edge of matrix slip pipe away from a side of gear platform, and form a breach, anticreep slide opening is communicated with rectangle slide opening; The limiting section that each paw guide runner portion is provided with the guide part being arranged in rectangle slide opening, the anti-delinking part being arranged in anticreep slide opening and is positioned at outside matrix slip pipe, the shape of anti-delinking part and anticreep slide opening adaptation; Each paw is run through along the radial direction of matrix slip pipe in the guide part of each paw and anti-delinking part; Driving threaded portion to protrude is arranged on the side end wall of anti-delinking part adjacent flat nut; The inwall of the pressing plate portion of each paw, guide part and anti-delinking part is equipped with puncture.
The present invention has positive effect: (1) high-voltage 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.(2) the present invention drives paw clamping electric power cable by flat thread portion, compares, can apply larger pressure, and have excellent anti-loosening effect, effectively ensure the reliability of long-term work with by traditional bolt assembly clamping electric power cable.(3) the present invention is by being arranged on matrix slip pipe center cable clamping, and its gravity centre distribution is comparatively reasonable, when on the overhead power line of high-altitude, is conducive to alleviating vibration.(4) the present invention adopts two casing pressure claw assemblies to be clamped on same cable, has the effect of dual fail-safe, in use goes wrong even if wherein a set of, also has its service behaviour of another set of guarantee.
Accompanying drawing explanation
Fig. 1 is a kind of perspective view of the present invention;
A kind of front view that Fig. 2 is instrument transformer shown in Fig. 1;
Fig. 3 partly cuts open structural representation for the one of instrument transformer shown in Fig. 1;
A kind of explosive view that Fig. 4 is instrument transformer shown in Fig. 1;
The explosive view that Fig. 5 decomposes after removing section components further for instrument transformer shown in Fig. 4.
Be labeled as shown in accompanying drawing: matrix 1, slip pipe 11, radially-directed spacing hole 12, rectangle slide opening 121, anticreep slide opening 122, gear platform 13, detent 131, positioning runner 15, plane nut 2, fastening part 21, flat thread portion 22, paw assembly 3, paw 4, pressing plate portion 41, puncture 42, guide runner portion 43, guide part 431, anti-delinking part 432, limiting section 433, drive threaded portion 44, deep-slotted chip breaker 45, clamp hole 5, plug 6, arc clip slot 61, supporting and location flange 62, voltage transformer 7, zero sequence current mutual inductor 8.
Embodiment
(embodiment 1)
The present embodiment is a kind of mesohigh instrument transformer, sees shown in Fig. 1 to Fig. 5, comprises matrix 1, two plane nut 2, two casing pressure claw assemblies 3 and an instrument transformer 7; Each casing pressure claw assembly comprises three paws 4; Matrix is provided with slip pipe 11, is arranged on the radially-directed spacing hole 12 on slip pipe and is arranged on the gear platform 13 formed along the radial evagination of slip pipe on slip pipe periphery wall; Radially-directed spacing hole runs through slip pipe tube wall along the radial direction of matrix slip pipe; The shape of gear platform is ring-type, and gear platform is positioned at the middle-end of matrix slip pipe;
The middle part of gear platform is provided with a circular orientation groove 131, and instrument transformer 7 is fixedly installed in this detent; Because electric power cable passes from matrix slip pipe tube chamber, this instrument transformer can obtain lower induced voltage by induction mode, uses for the power supply as auxiliary equipment.Such as, the auxiliary equipment such as camera, temperature sensor, humidity sensor or the lightning stroke counter with wireless transmit/receive units can be fixedly installed in the bottom of matrix slip pipe, for monitoring in real time the environment around this instrument transformer, and send real time information to distance host by wireless transmit/receive units, for power circuit intellectuality provides basic data; Voltage transformer in the present embodiment then stablizes continuable electric power supply for these auxiliary equipment provide.
The quantity of radially-directed spacing hole 12 is identical with the quantity of paw 4, totally six, and matrix slip pipe two ends axially respectively arrange three radially-directed spacing holes, and these three radially-directed spacing holes are used for and corresponding a set of paw assembly 3 adaptation; 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;
The shape of each plane nut 2 is ring-type, and each plane nut sleeve is located on the periphery wall of matrix slip pipe 11, and between gear platform 13 and corresponding a set of paw assembly 3; The two side ends of two plane nut separation gear platforms, two casing pressure claw assemblies are also lived apart and are kept off the two side ends of platform.
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, and the deep-slotted chip breaker of multiple paw encloses formation one clamp hole 5.External cable is arranged in this clamp hole 5.
The present embodiment, in order to connect electricity from insulating power cable, is also provided with multiple puncture 42 on pressing plate portion inwall, and specifically, puncture is arranged on the inwall of each deep-slotted chip breaker, and each puncture is radially-inwardly protruded along matrix slip pipe 11.The existence of puncture, can not carry out peeling process to insulating power cable, effectively can connect electricity.In concrete practice, if what will clamp is bare wire, then can not puncture be set.
In the present embodiment, each paw is the integral piece made by cast molding, and each puncture is made when cast molding; In concrete practice, puncture also can adopt alternate manner to make; Such as on the inwall in pressing plate portion, be provided with multiple installation draw-in groove, then installed in draw-in groove be inlaid in corresponding one by the die-cut puncture sheet made, puncture sheet comprises installation portion and thorn blade, and installation portion is inlaid in be installed in draw-in groove, and thorn blade then exposes installing card groove and forms puncture.The benefit of this structure is that puncture sheet can adopt the material different with paw to make, and especially selects and treats that clamp cable same material used is made, being conducive to obtaining better electrical gas performance.
The internal perisporium of each plane nut is the smooth inner wall with matrix slip pipe periphery wall adaptation, the periphery wall of each plane nut is provided with fastening part 21, each plane nut is provided with flat thread portion 22 away from a side of gear platform, flat thread portion is provided with archimedean spiral groove, adaptation then engages with the driving threaded portion of paw in flat thread portion, and the side that each plane nut adjoins gear platform slides adjacent with gear platform; The fastening part 21 of the present embodiment midplane nut is the outer-hexagonal shape fastener head be arranged on plane nut periphery wall, and it is twisted operation and adopts inner hexagon spanner, shfting wrench or fork spanner; In concrete practice, described fastening part just can adopt other shape, such as, adopt the multiple binding grooves be evenly distributed on plane nut periphery wall, and it is twisted operation and adopts hook type spanner (being commonly called as hook spanner).
In the present embodiment, each radially-directed spacing hole 12 comprises rectangle slide opening 121 and anticreep slide opening 122, rectangle slide opening is arranged on matrix slip pipe away from gear edge of table place, form a breach, anticreep slide opening is communicated with rectangle slide opening, anticreep slide opening is positioned at the inboard of rectangle slide opening, and anticreep slide opening and rectangle slide opening are combined to form T-shaped hole;
The limiting section 433 that each paw guide runner portion 43 is provided with the guide part 431 being arranged in rectangle slide opening, the anti-delinking part 432 being arranged in anticreep slide opening and is positioned at outside matrix slip pipe, 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 equipped with multiple puncture; Threaded portion is driven to be arranged on the side end wall of anti-delinking part away from gear platform, 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, when assembling, first can be located at plane nut sleeve on matrix slip pipe, makes it be connected on gear platform; Again along direction from outside to inside in matrix slip pipe radial direction, 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 with three paws of this plane nut adaptation close to each other towards matrix slip pipe center.
The present embodiment, when carrying out clamp operation, adopts inner hexagon spanner, shfting wrench or fork spanner to twist plane nut; Plane nut is in reciprocating rotation, drive its flat thread portion reciprocating rotation, and then drive 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 longitudinal center line place 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.
In the present embodiment, the both sides of gear platform respectively have a plane nut and a set of paw assembly with this plane nut adaptation, during this plane nut rotation, drive three paws in this casing pressure claw assembly along the radial direction of matrix slip pipe, towards matrix slip pipe center close to each other or away from.This structure makes each casing pressure claw assembly to clamp separately and to unclamp.In addition, two casing pressure claw assemblies are clamped on same cable, have the effect of dual fail-safe, in use go wrong even if wherein a set of, also have its service behaviour of another set of guarantee.
The present embodiment, 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.The present embodiment can by induction mode from the cable of being locked by paw obtain induced voltage and convert thereof into low pressure export, can be used for as DATA REASONING or the power supply as auxiliary equipment.Such as, the auxiliary equipment such as camera, temperature sensor, humidity sensor or the lightning stroke counter with wireless transmit/receive units can be fixedly installed in the bottom of matrix slip pipe, for monitoring in real time the environment of surrounding, and send real time information to distance host by wireless transmit/receive units, for power circuit intellectuality provides basic data; Then continuable electric power supply is stablized for these auxiliary equipment provide in the present embodiment.In addition, the present embodiment also can be used for high-voltage switch gear, box-type substation and switch cubicle, for being clamped in electric power cable; In sum, the present embodiment both can be used as the power taking wire clamp that continues, and can be used as again radio source also i.e. high-voltage mutual inductor use.
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 mesohigh instrument transformer, is characterized in that: comprise matrix, two plane nuts, two casing pressure claw assemblies and instrument transformers; The gear platform that matrix is provided with slip pipe, is arranged on the radially-directed spacing hole on slip pipe and is arranged on slip pipe periphery wall; Each casing pressure claw assembly comprises three paws; Matrix slip pipe two ends axially respectively arrange three radially-directed spacing holes, and each paw is arranged in a corresponding radially-directed spacing hole, and the radial direction of each paw along matrix slip pipe under the guide and limit effect of radially-directed spacing hole reciprocatingly slides; Each plane nut and corresponding a set of paw assembly adaptation; Each plane nut sleeve is located on the periphery wall of matrix slip pipe, and between gear platform and corresponding a set of paw assembly; The middle part of gear platform is provided with a circular orientation groove, and instrument transformer is fixedly installed in this detent;
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 the side of guide runner portion close to gear platform; The periphery wall of each plane nut is provided with fastening part, and each plane nut is provided with flat thread portion away from a side of gear platform, and adaptation then engages with the driving threaded portion of three paws in corresponding a set of paw assembly in each flat thread portion; Each plane nut drives its flat thread portion reciprocating rotation, so by the driving threaded portion of its engagement adaptation drive three paws in corresponding a set of paw assembly towards slip pipe center close to each other or away from;
Each radially-directed spacing hole comprises rectangle slide opening and anticreep slide opening, and rectangle slide opening is arranged on the edge of matrix slip pipe away from a side of gear platform, and form a breach, anticreep slide opening is communicated with rectangle slide opening; The limiting section that each paw guide runner portion is provided with the guide part being arranged in rectangle slide opening, the anti-delinking part being arranged in anticreep slide opening and is positioned at outside matrix slip pipe, the shape of anti-delinking part and anticreep slide opening adaptation; Each paw is run through along the radial direction of matrix slip pipe in the guide part of each paw and anti-delinking part; Driving threaded portion to protrude is arranged on the side end wall of anti-delinking part adjacent flat nut; The inwall of the pressing plate portion of each paw, guide part and anti-delinking part is equipped with puncture.
CN201610097289.2A 2016-01-15 2016-01-15 A kind of mesohigh mutual inductor Active CN105551739B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610097289.2A CN105551739B (en) 2016-01-15 2016-01-15 A kind of mesohigh mutual inductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610097289.2A CN105551739B (en) 2016-01-15 2016-01-15 A kind of mesohigh mutual inductor

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CN105551739A true CN105551739A (en) 2016-05-04
CN105551739B CN105551739B (en) 2019-01-29

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Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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

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Country or region after: China

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