CN105575603A - High-voltage instrument transformer for improving wire clamping strength - Google Patents
High-voltage instrument transformer for improving wire clamping strength Download PDFInfo
- Publication number
- CN105575603A CN105575603A CN201610096610.5A CN201610096610A CN105575603A CN 105575603 A CN105575603 A CN 105575603A CN 201610096610 A CN201610096610 A CN 201610096610A CN 105575603 A CN105575603 A CN 105575603A
- Authority
- CN
- China
- Prior art keywords
- core pipe
- pipe portion
- pressing
- base tube
- paw
- 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- Withdrawn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
- H01F38/24—Voltage transformers
- H01F38/26—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
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
Abstract
The invention discloses a high-voltage instrument transformer for improving the wire clamping strength. The high-voltage instrument transformer comprises a base body, a voltage transformer, two pressing rings and two pressing claw assemblies. The base body comprises a basic pipe portion, a core pipe portion and a connecting plate portion. Inner threaded areas are arranged on the inner walls of the two side ends of the basic pipe portion. Multiple guide sliding holes are formed in the pipe wall of the core pipe portion. Each pressing claw assembly comprises multiple pressing claws. Each pressing claw is provided with a pressing plate portion and a guide sliding column portion. A stressed oblique plane is arranged at the top end of the guide sliding column portion. The instrument transformer comprises an annular sensing body. Wire clamping holes are all located in a hole cavity of the annular sensing body. Each pressing ring is matched with the corresponding pressing claw assembly. Each pressing ring comprises a conical pressing-connection face and an outer threaded area. The conical pressing-connection faces are pressed and connected on the stressed oblique planes of the pressing claw assemblies. When the pressing rings rotate in the preset direction, the pressing plate portions in the pressing claw assemblies can move towards the center of the core pipe portion. The high-voltage instrument transformer is convenient to install and position and has higher firmness degree.
Description
Technical field
The invention belongs to high-tension electricity technical field, be specifically related to a kind of high-voltage mutual inductor of improving clamping line strength.
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 high-voltage mutual inductor being convenient to install location, there is the improving clamping line strength of better firmness.
The technical scheme realizing the object of the invention is: a kind of high-voltage mutual inductor of improving clamping line strength, comprises a matrix, voltage transformer, two pressure rings and two casing pressure claw assemblies; Matrix comprising base tube portion, being arranged on the core pipe portion in base tube tube chamber and the web portion for being connected and fixed base tube portion and core pipe portion; The inwall of base tube portion two side ends is equipped with internal threaded regions; The both sides of two internal threaded regions separation web portion; The tube wall in core pipe portion is provided with two groups of pilot holes, and these two groups of pilot holes are positioned at the both sides of web portion; Each group of pilot hole comprises multiple guiding slide opening; Each guiding slide opening runs through the tube wall in core pipe portion along core pipe portion radial direction; Each casing pressure claw assembly comprises multiple paw; Each casing pressure claw assembly and corresponding one group of pilot hole adaptation; Each paw is provided with pressing plate portion and guiding traveller portion; Guiding traveller portion protrudes from pressing plate portion and is formed, and the top in guiding traveller portion is provided with a stressed inclined-plane; The pressing plate portion of each paw is arranged in the tube chamber in core pipe portion, and guiding traveller portion extend out to the outside in core pipe portion through a corresponding guiding slide opening, and is arranged in the tube chamber in base tube portion; Pressing plate portion clamping in each casing pressure claw assembly forms one for clamping the clamp hole of electric power cable; Voltage transformer comprises toroidal inductive body; Clamp hole is arranged in the vestibule of toroidal inductive body; The both sides of two pressure ring separation web portion, each pressure ring and corresponding a set of paw assembly adaptation; Each pressure ring comprises the taper electrolysis set within it on perisporium and the external screw thread district be arranged on pressure ring periphery wall; The taper electrolysis of each pressure ring is crimped on the stressed inclined-plane of paw in each casing pressure claw assembly, the external screw thread district of each pressure ring and the internal threaded regions adaptation in base tube portion; Base tube portion and core pipe portion are arranged with one heart, and web portion is the annular slab between base tube portion and core pipe portion; Web portion is positioned at the end margin place, the same side in base tube portion and core pipe portion; Base tube portion, core pipe portion and web portion are integral pieces; Paw is identical with the quantity of guiding slide opening; Each guiding slide opening is evenly distributed on the tube wall in core pipe portion along the circumference in core pipe portion; The shape of each guiding slide opening is I shape, circle, square or rhombus; The shape in each guiding traveller portion and the shape adaptation of guiding slide opening; When each pressure ring rotates along preset direction, by the stressed inclined-plane of paw in the corresponding a set of paw assembly of taper electrolysis pushing, make in each casing pressure claw assembly pressing plate portion move towards the center in core pipe portion, thus clamping is arranged in the electric power cable in clamp hole.
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; (2) pressure ring is connected threadably with base tube portion, and crimps each paw by taper electrolysis and make it clamp electric power cable, and its operation is comparatively laborsaving, and has good anti-loosening effect; (3) by cable clamping is arranged on core tube hub place, make overall gravity centre distribution comparatively reasonable, when on the overhead power line of high-altitude, be 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;
Fig. 2 partly cuts open structural representation for the one of high-voltage mutual inductor shown in Fig. 1;
Fig. 3 partly cuts open structural representation for the one of matrix in high-voltage mutual inductor shown in Fig. 1;
A kind of explosive view that Fig. 4 is high-voltage mutual inductor shown in Fig. 1;
Fig. 5 removes a kind of explosive view after pressure ring and voltage transformer for high-voltage mutual inductor shown in Fig. 1.
Embodiment
(embodiment 1)
The present embodiment is a kind of high-voltage mutual inductor of improving clamping line strength, sees shown in Fig. 1 to Fig. 5, comprises a matrix 1, voltage transformer 8, two pressure rings 2 and two casing pressure claw assemblies 3.
Matrix 1 comprising base tube portion 11, being arranged on the core pipe portion 12 in base tube tube chamber and the web portion 13 for being connected and fixed base tube portion and core pipe portion; The inwall of the axial two side ends in base tube portion 11 is equipped with internal threaded regions 111; Base tube portion and core pipe portion are arranged with one heart, and web portion is the annular slab between base tube portion and core pipe portion, and in the present embodiment, web portion is positioned at the axial middle-end place in base tube portion and core pipe portion, the both sides of two internal threaded regions separation web portion; In concrete practice, base tube portion is fixedly connected with core pipe portion by a planform demand fulfillment of web portion.
Base tube portion in the present embodiment, core pipe portion and web portion are integral pieces, also can adopt the form of split part in concrete practice.
The tube wall in core pipe portion is provided with two groups of pilot holes, and these two groups of pilot holes are positioned at the both sides of web portion; Each group of pilot hole comprises four guiding slide openings 121, and these four guiding slide openings are evenly distributed on the tube wall in core pipe portion along the circumference in core pipe portion; Each guiding slide opening runs through the tube wall in core pipe portion along core pipe portion radial direction, and the shape of each guiding slide opening is I shape.In concrete practice, the shape of guiding slide opening also can adopt other shape, and such as circular, square, rhombus is all feasible.
Each casing pressure claw assembly 3 comprises four paws 31; Each casing pressure claw assembly and corresponding one group of pilot hole adaptation; Each paw is provided with pressing plate portion 311 and guiding traveller portion 312; Guiding traveller portion protrudes from a side in pressing plate portion and is formed, and guiding traveller portion is arranged in a corresponding guiding slide opening, and the top in guiding traveller portion is provided with a stressed inclined-plane 313; The one end away from guiding traveller portion in pressing plate portion is as the inwall in pressing plate portion, and the inwall in pressing plate portion is provided with deep-slotted chip breaker 314.The shape in each guiding traveller portion and the shape adaptation of guiding slide opening, each guiding traveller portion reciprocatingly slides along the radial direction in core pipe portion under the position-limiting action of guiding slide opening.
The pressing plate portion of each paw is arranged in the tube chamber in core pipe portion, and guiding traveller portion extend out to the outside in core pipe portion through a corresponding guiding slide opening, and is arranged in the tube chamber in base tube portion.
In the present embodiment, in each casing pressure claw assembly, the deep-slotted chip breaker clamping in four pressing plate portions forms one for clamping the clamp hole 4 of electric power cable.
The both sides of two pressure ring separation web portion, each pressure ring and corresponding a set of paw assembly adaptation; Each pressure ring 2 comprises the taper electrolysis 21 set within it on perisporium and the external screw thread district 22 be arranged on pressure ring periphery wall; The taper electrolysis of each pressure ring is crimped on the stressed inclined-plane of paw in each casing pressure claw assembly, the external screw thread district of each pressure ring and the internal threaded regions adaptation in base tube portion.
In the present embodiment, each pressure ring rotates and is arranged on the periphery wall in core pipe portion, and the inwall of pressure ring is provided with the concentric stroking junction adjacent with the slip of core pipe portion periphery wall; But in concrete practice, the internal perisporium of pressure ring can and the periphery wall in core pipe portion between reserve gap, be also feasible.
In the present embodiment, the periphery wall of pressure ring and the periphery wall in base tube portion are equipped with multiple binding groove 5, it is twisted and hook spanner can be adopted to operate, certainly other fastening means can also be adopted, such as on the periphery wall of pressure ring and the periphery wall in base tube portion, arranging hexagonal shape fastener head, is also feasible.
When each pressure ring rotates along preset direction, by the stressed inclined-plane of paw in the corresponding a set of paw assembly of taper electrolysis pushing, the pressing plate portion in each casing pressure claw assembly is moved towards the center in core pipe portion, thus clamping is arranged in the electric power cable in clamp hole.
In the present embodiment, in paw assembly, the quantity of paw is identical with the quantity of the slide opening that leads in each group of pilot hole, can select between two to five.
Voltage transformer comprises toroidal inductive body 81 and intelligent control module; In the present embodiment, the internal perisporium of core pipe is provided with annular groove 123, and the opening of this annular groove 123 is positioned on the internal perisporium of the axial middle-end in core pipe portion, and this groove extends in web portion along the radial direction in core pipe portion; The toroidal inductive body of voltage transformer and intelligent control module are fixed in annular groove.In concrete practice, voltage transformer also can be fixedly installed on other position, as long as make clamp hole be arranged in the vestibule of toroidal inductive body, also namely only needs to make cable pass the vestibule of toroidal inductive body.
Intelligent control module can comprise wireless transmit/receive units, and the secondary voltage that intelligent control module is sensed annular matrix by wireless transmit/receive units or current signal send distance host to, to realize accurate long-range no worker monitor; This structure can make full use of space, is conducive to the small-sized and integrated of entirety.
The present embodiment, in order to connect electricity from insulating power cable or promote chuck strength, is also provided with multiple puncture 6 in each deep-slotted chip breaker; Specifically, each puncture is protruded along the radial direction in core pipe portion.The existence of puncture, without the need to carrying 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 casting forming, and each puncture is made when casting forming; In concrete practice, puncture also can adopt alternate manner to make; Such as in each deep-slotted chip breaker, be provided with multiple installation draw-in groove, then install 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 present embodiment has following Advantageous Effects: (1) pressure ring is connected threadably with base tube portion, and crimps each paw by taper electrolysis and make it clamp electric power cable, and its operation is comparatively laborsaving, and has good anti-loosening effect; (2) by cable clamping is arranged on center, core pipe portion, make overall gravity centre distribution comparatively reasonable, when on the overhead power line of high-altitude, be conducive to alleviating vibration.
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-voltage mutual inductor for improving clamping line strength, is characterized in that: comprise a matrix, voltage transformer, two pressure rings and two casing pressure claw assemblies; Matrix comprising base tube portion, being arranged on the core pipe portion in base tube tube chamber and the web portion for being connected and fixed base tube portion and core pipe portion; The inwall of base tube portion two side ends is equipped with internal threaded regions; The both sides of two internal threaded regions separation web portion; The tube wall in core pipe portion is provided with two groups of pilot holes, and these two groups of pilot holes are positioned at the both sides of web portion; Each group of pilot hole comprises multiple guiding slide opening; Each guiding slide opening runs through the tube wall in core pipe portion along core pipe portion radial direction; Each casing pressure claw assembly comprises multiple paw; Each casing pressure claw assembly and corresponding one group of pilot hole adaptation; Each paw is provided with pressing plate portion and guiding traveller portion; Guiding traveller portion protrudes from pressing plate portion and is formed, and the top in guiding traveller portion is provided with a stressed inclined-plane; The pressing plate portion of each paw is arranged in the tube chamber in core pipe portion, and guiding traveller portion extend out to the outside in core pipe portion through a corresponding guiding slide opening, and is arranged in the tube chamber in base tube portion; Pressing plate portion clamping in each casing pressure claw assembly forms one for clamping the clamp hole of electric power cable; Voltage transformer comprises toroidal inductive body; Clamp hole is arranged in the vestibule of toroidal inductive body; The both sides of two pressure ring separation web portion, each pressure ring and corresponding a set of paw assembly adaptation; Each pressure ring comprises the taper electrolysis set within it on perisporium and the external screw thread district be arranged on pressure ring periphery wall; The taper electrolysis of each pressure ring is crimped on the stressed inclined-plane of paw in each casing pressure claw assembly, the external screw thread district of each pressure ring and the internal threaded regions adaptation in base tube portion; Base tube portion and core pipe portion are arranged with one heart, and web portion is the annular slab between base tube portion and core pipe portion; Web portion is positioned at the end margin place, the same side in base tube portion and core pipe portion; Base tube portion, core pipe portion and web portion are integral pieces; Paw is identical with the quantity of guiding slide opening; Each guiding slide opening is evenly distributed on the tube wall in core pipe portion along the circumference in core pipe portion; The shape of each guiding slide opening is I shape, circle, square or rhombus; The shape in each guiding traveller portion and the shape adaptation of guiding slide opening; When each pressure ring rotates along preset direction, by the stressed inclined-plane of paw in the corresponding a set of paw assembly of taper electrolysis pushing, make in each casing pressure claw assembly pressing plate portion move towards the center in core pipe portion, thus clamping is arranged in the electric power cable in clamp hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610096610.5A CN105575603A (en) | 2016-01-15 | 2016-01-15 | High-voltage instrument transformer for improving wire clamping strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610096610.5A CN105575603A (en) | 2016-01-15 | 2016-01-15 | High-voltage instrument transformer for improving wire clamping strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105575603A true CN105575603A (en) | 2016-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610096610.5A Withdrawn CN105575603A (en) | 2016-01-15 | 2016-01-15 | High-voltage instrument transformer for improving wire clamping strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105575603A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109937461A (en) * | 2016-10-28 | 2019-06-25 | 霍加纳斯股份有限公司 | Inductance device and manufacturing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202387980U (en) * | 2011-10-31 | 2012-08-22 | 苏州市东立机械有限公司 | Novel three-jaw chuck |
| CN104215877A (en) * | 2014-08-21 | 2014-12-17 | 国家电网公司 | Combined CT (current transformer) polarity test device |
| CN204375555U (en) * | 2014-12-22 | 2015-06-03 | 孙玉芬 | A kind of novel current transformer |
| CN204464509U (en) * | 2015-01-22 | 2015-07-08 | 国家电网公司 | A kind of support type current transformer connecting clamp |
| CN204884841U (en) * | 2015-08-17 | 2015-12-16 | 广东腾达电力科技有限公司 | Undercurrent route selection is high accuracy opening CT for device |
-
2016
- 2016-01-15 CN CN201610096610.5A patent/CN105575603A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202387980U (en) * | 2011-10-31 | 2012-08-22 | 苏州市东立机械有限公司 | Novel three-jaw chuck |
| CN104215877A (en) * | 2014-08-21 | 2014-12-17 | 国家电网公司 | Combined CT (current transformer) polarity test device |
| CN204375555U (en) * | 2014-12-22 | 2015-06-03 | 孙玉芬 | A kind of novel current transformer |
| CN204464509U (en) * | 2015-01-22 | 2015-07-08 | 国家电网公司 | A kind of support type current transformer connecting clamp |
| CN204884841U (en) * | 2015-08-17 | 2015-12-16 | 广东腾达电力科技有限公司 | Undercurrent route selection is high accuracy opening CT for device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109937461A (en) * | 2016-10-28 | 2019-06-25 | 霍加纳斯股份有限公司 | Inductance device and manufacturing method |
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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 |
Application publication date: 20160511 |
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| WW01 | Invention patent application withdrawn after publication |