CN105826005B - Intelligent electric power zero sequence current mutual inductor - Google Patents
Intelligent electric power zero sequence current mutual inductor Download PDFInfo
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- CN105826005B CN105826005B CN201610097553.2A CN201610097553A CN105826005B CN 105826005 B CN105826005 B CN 105826005B CN 201610097553 A CN201610097553 A CN 201610097553A CN 105826005 B CN105826005 B CN 105826005B
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- core pipe
- claw
- ring
- radially
- hole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/38—Instruments transformers for polyphase ac
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a kind of intelligent electric power zero sequence current mutual inductors, including core pipe, plug, current transformer, two pressure rings and two sets of wire clipping components；Core pipe is equipped with radially-directed hole；Pressure ring is rotatably arranged on core pipe periphery wall；Each pressure ring includes the spine ring that internal perisporium is equipped with multiple slope slots；Wedge-shaped anticreep tooth is equipped in each slope slot；Each pressure ring and a set of wire clipping component adaptation；Each claw component includes at least three claws and reset spring；Each claw includes pressing plate portion and radial traveller；Each radial direction traveller is equipped with chisel teeth；Each pressing plate portion is located in core pipe lumen, and each radial direction traveller passes through a corresponding radially-directed hole, and each chisel teeth apical grafting is on the wedge-shaped anticreep tooth in a corresponding slope slot；Plug is located in core pipe lumen；Clamping forms at least three clamp holes altogether；Current transformer is equipped with annular matrix, and each clamp hole is respectively positioned in the vestibule of annular matrix；Drive the pressing plate portion in corresponding a set of wire clipping component mobile towards core pipe center when each spine ring rotates.The present invention has preferable electric property.
Description
Technical field
The invention belongs to technical field of electric power, and in particular to a kind of intelligent electric power zero sequence current mutual inductor.
Background technique
The basic principle of zero-sequence current protection is based on Kirchhoff's current law (KCL): flowing into the telegram in reply of any node in circuit
The algebraical sum of stream is equal to zero.Under route and the normal situation of electrical equipment, the vector sum of each phase current is equal to zero, therefore, zero
The secondary side winding no signal of sequence current transformer exports, and executive component is failure to actuate.It is each when electric shock or leak current fault occurs
The vector sum of phase current is not zero, and fault current makes to generate magnetic flux in the iron core of zero sequence current mutual inductor, zero sequence current mutual inductor
Generated electric current is zero-sequence current.When protection mechanism receives the zero sequence current signal, it can be taken according to electrical leakage quantity accordingly
Protection act.
The mounting means of existing zero sequence current mutual inductor is mostly to be fixed using flange installation or fixed using bonding mode,
Its installation site generally requires reserved, therefore makes its application by more limitation.
Summary of the invention
It is easily installed and positioned, the object of the present invention is to provide a kind of with preferable firmness, the intelligence for effectivelying prevent loosening
It can type electric power zero sequence current mutual inductor.
Realizing the technical solution of the object of the invention is: a kind of intelligent electric power zero sequence current mutual inductor, including a core pipe,
One plug, a current transformer, two pressure rings and two sets of wire clipping components；Core pipe tube wall is equipped with multiple radially-directed holes；
Each pressure ring is rotatably arranged on core pipe periphery wall；Each pressure ring includes the spine ring that internal perisporium is equipped with multiple slope slots；Each slope slot
In be equipped with multiple wedge-shaped anticreep teeth；Each pressure ring and corresponding a set of wire clipping component adaptation；Each set wire clipping component includes along core pipe circumferential direction
Equally distributed multiple claw components；Two sets of wire clipping components are axially arranged side by side along core pipe；Each claw component includes at least three
Claw and the reset spring of reseting elasticity is provided for claw；Each claw includes pressing plate portion and the radial direction that is arranged on pressing plate portion outer wall
Traveller；The outboard end of each radial direction traveller is equipped with and the chisel teeth of the wedge-shaped anticreep tooth adaptation in the slot of spine ring slope；The pressure of each claw
Plate portion is located in core pipe lumen, and the radial traveller of each claw passes through the corresponding radially-directed hole on core pipe tube wall, is resetting
Under the elastic force effect of spring, the chisel teeth apical grafting on each radial direction traveller is on the wedge-shaped anticreep tooth in a corresponding slope slot；Respectively
Cover the inner wall setting of the corresponding pressure ring of radial traveller face in wire clipping component, each equal apical grafting of chisel teeth covered in wire clipping component
On the wedge-shaped anticreep tooth in a corresponding pressure ring；Plug is located in core pipe lumen；The periphery wall of plug is equipped at least three
Arc clip slot, each arc clip slot is axially extending along core pipe, and the arc groove on the corresponding claw inner wall of each arc clip slot face is set
It sets；Each arc clip slot and corresponding arc groove are total to clamping and form at least three clamp holes；Current transformer is equipped with annular matrix, respectively
Clamp hole is respectively positioned in the vestibule of annular matrix；The annular of block machine and two indents of the periphery wall of core pipe equipped with evagination is recessed
Slot, block machine are located among two annular grooves；Core pipe on the tube wall between block machine and each annular groove be equipped with it is multiple for and
The radially-directed hole of each radial traveller adaptation in corresponding a set of wire clipping component, circumferential uniform point along core pipe of multiple radially-directed hole
Cloth；Each radially-directed hole extends radially through core pipe tube wall along core pipe；Accommodating hole and guiding slide opening are successively set along direction from outside to inside
It sets, accommodating hole and guiding slide opening are circular holes, and the aperture of accommodating hole is greater than the aperture of guiding slide opening, and each radially-directed hole is cut
Face shape is T-shaped；Each spine ring drives the wedge-shaped anticreep tooth on its inner wall to rotate when rotating, sliding by the radial direction for squeezing each claw
Column drives the pressing plate portion in corresponding a set of wire clipping component mobile towards core pipe center.
The present invention has the effect of positive: (1) zero sequence current mutual inductor of the invention due to carry press claw type retaining mechanism,
Reserved installation position is not needed, is easily installed, and there is preferable anti-loosening effect, secured intensity is relatively high and stable reliable.(2) originally
Larger pressure can be applied, and there is excellent anti-loosening effect, the reliability of long-term work is effectively ensured.(3) this reality
It applies example and clamps electric power cable by using two sets of wire clipping components, it is a set of to be out of order, it is another set of still to guarantee work, have double
The technical effect of insurance.
Detailed description of the invention
Fig. 1 is a kind of schematic perspective view of the first structure of the invention；
Fig. 2 is a kind of half section structure diagram of intelligent zero sequence current mutual inductor shown in Fig. 1；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is a kind of explosive view of intelligent zero sequence current mutual inductor shown in Fig. 1；
Fig. 5 is a kind of explosive view that intelligent zero sequence current mutual inductor removes after pressure ring and retaining ring shown in Fig. 1；
Fig. 6 is a kind of explosive view of claw component in Fig. 1；
Fig. 7 is a kind of half section structure diagram of second of structure of the invention；
Fig. 8 is a kind of schematic perspective view of intelligent zero sequence current mutual inductor core pipe shown in Fig. 7；
Fig. 9 is a kind of half section structure diagram of the third structure of the invention.
Specific embodiment
(embodiment 1)
The present embodiment is a kind of intelligent electric power zero sequence current mutual inductor, as shown in Fig. 1 to Fig. 6, including a core pipe 2,
One axial retaining ring 4 of the current transformer 8, two of plug 7, one pressure ring 1, two and two sets of wire clipping components 9.
Each pressure ring 1 includes the two clamping connection rings 12 and multiple connecting rivets 13 of spine ring 11, spine ring two sides of living apart；Each pressure ring
In, two clamping connection rings clamp spine rings, and connecting rivet axially penetrates through the spine ring and two clamping connection rings along core pipe, thus by spine ring and
Two clamping connection rings are fixedly connected into an entirety.The internal perisporium of spine ring is equipped with multiple slope slots 111, is equipped in each slope slot more
A wedge shape anticreep tooth 112；In the present embodiment, the internal perisporium of spine ring and the internal perisporium of clamping connection ring are coplanar, the periphery wall and folder of spine ring
The periphery wall for connecing ring is coplanar；The periphery wall of pressure ring is equipped with multiple binding grooves 14 that entire pressure ring is axially penetrated through along core pipe, pressure ring
Twist operation using hook type spanner (being commonly called as hook spanner).In concrete practice, the internal diameter of clamping connection ring can also be slightly smaller than spine ring
Internal perisporium.Slope slot in the present embodiment refers to the groove that depth of groove is gradually incremented by from a side to another side.
The periphery wall of core pipe 2 is equipped with the block machine 21 of evagination and the annular groove 22 of two indents, and block machine is located at two rings
Among connected in star；Core pipe is set on the tube wall between block machine and each annular groove there are four radially-directed hole 23, four radial directions
Pilot hole is circumferentially uniformly distributed along core pipe；In the present embodiment, each radially-directed hole extends radially through core pipe tube wall, each diameter along core pipe
It include the accommodating hole 231 being connected to and guiding slide opening 232 to pilot hole, the direction of accommodating hole and guiding slide opening edge from outside to inside is successively
Setting, accommodating hole and guiding slide opening are circular holes, and the aperture of accommodating hole is greater than the aperture of guiding slide opening, and each radially-directed hole is cut
Face shape is T-shaped.Each axial direction retaining ring is arranged in a corresponding annular groove for core pipe.
Each pressure ring is rotatably arranged on core pipe periphery wall, the two sides of two pressure rings separation block machine, a side of each pressure ring and
Slide adjoining, another side and a corresponding axial retaining ring sliding adjoining in one end of block machine.
Each set wire clipping component includes along the circumferentially equally distributed multiple claw components 3 of core pipe, and the present embodiment selects four, tool
In body practice, it can be selected between two to five.Two sets of wire clipping components are axially provided adjacent to side by side along core pipe.In the present embodiment,
Multiple claw components 3 in each set wire clipping component form a clamp hole 5 for clamping.Each set wire clipping component and a corresponding pressure
Ring adaptation.
Each claw component 3 provides the reset spring 32 of reseting elasticity including one claw 31, one for claw and one is consolidated
Card mat 33 on each claw is set calmly；Each claw include pressing plate portion 311, the radial traveller 312 being arranged on pressing plate portion outer wall,
Annular slot 313 on radial traveller periphery wall is set；Guiding slide opening adaptation in each radial direction traveller and radially-directed hole, respectively
Radial traveller radially reciprocatingly slides under the position-limiting action of guiding slide opening along core pipe；The outboard end of each radial direction traveller is equipped with chisel teeth
34；Wedge-shaped anticreep tooth adaptation in each chisel teeth and spine ring slope slot；Radial traveller face corresponding one in each set wire clipping component
The inner wall of a pressure ring is arranged.Each card mat is fixed in the annular slot of corresponding one radial traveller, and each reset spring is arranged
On corresponding one radial traveller, each reset spring is connected in corresponding one annular card mat along the outer end of core pipe radially, multiple
Position spring is along the bottom wall that the inner end of core pipe radially is connected to accommodating hole；
The pressing plate portion of each claw is located in core pipe lumen, and the radial traveller of each claw passes through corresponding one on core pipe tube wall
Radially-directed hole；Under the elastic force effect of reset spring, the chisel teeth apical grafting on each radial direction traveller at corresponding one of spine ring tiltedly
On wedge-shaped anticreep tooth in the slot of slope；Wedge-shaped anticreep tooth of the equal apical grafting of chisel teeth in a corresponding pressure ring in each set wire clipping component
On；Under the position-limiting action of slope slot and chisel teeth, the pressure ring in the present embodiment can only be twisted along a direction, be had anti-down
It moves back namely anti-loosening technical effect.
The inner wall in each claw pressing plate portion is equipped with arc groove 314.
Plug 7 is located in core pipe lumen；The periphery wall of plug is equipped with multiple arcs clip slot 71, and each arc clip slot is along core pipe
It is axially extending, the arc groove setting on the corresponding claw inner wall of each arc clip slot face；Each arc clip slot and a corresponding arc
Shape slot clamping forms a clamp hole 5；So the present embodiment can form four clamp holes, it can be used for simultaneously clamping on four cables.
The periphery wall of plug, which is equipped with, positions protrusive board 72, the internal perisporium of core pipe along four supports that core pipe radial direction is protruded
On set there are four positioning runner 24, the outboard end of each support positioning protrusive board is in a corresponding positioning runner, thus core
Stick is located in the lumen of matrix slip pipe.
Current transformer includes annular matrix 81；Annular matrix is fixed on a clamping connection ring；In the present embodiment, one
A clamping connection ring is equipped with installation gap 121 in a side of adjacent spine ring, and annular matrix is inlaid in the installation gap；This knot
Structure makes the present embodiment can be used as a high-voltage mutual inductor use.
In concrete practice, no matter annular matrix is fixed wherein, as long as being located at clamp hole in the vestibule of annular matrix,
As long as namely allowing and passing through annular matrix by folder electric power cable.
The present embodiment forms four clamp holes altogether, in use, wherein three clamp holes respectively clamp a phase line cable, in addition
One folder hole is as spare.Since three electric power cables are passed through from matrix slip pipe lumen, which can pass through sense
It answers mode to carry out zero-sequence current detection to three electric power cables, for finding leakage current failure in time, and passes through wireless receiving and dispatching
Unit sends real time information to distance host, provides basic data for power circuit intelligence.
The present embodiment twists each pressure ring in operation, using hook type spanner, so that each pressure ring drives the wedge in its slope slot
The rotation of shape anticreep tooth overcomes the elastic force of each reset spring to squeeze the radial traveller in corresponding a set of wire clipping component, so that should
Pressing plate portion in set wire clipping component radially-inwardly slides along core pipe, is located in clamp hole so that the set wire clipping component clamps
Electric power cable.Two pressure rings in the present embodiment respectively correspond corresponding a set of wire clipping component, respectively can be individually operated；By adopting
Electric power cable is clamped with two sets of wire clipping components, a set of to be out of order, another set of still to guarantee work, the technology with dual fail-safe
Effect.
The present embodiment is by cable clamping being arranged at the longitudinal center line of intelligent zero sequence current mutual inductor, center of gravity
Be distributed it is relatively reasonable, when be used for high-altitude overhead power transmission line road when, be conducive to mitigate vibration；In addition, the present embodiment is by having
The slope slot of wedge-shaped anticreep tooth positions each claw, can play the technical effect for preventing falling back, and pass through traditional spiral shell
Bolt assembly clamps electric power cable and compares, especially excellent in anti-loosening effect, and the reliability of long-term work is effectively ensured.
(embodiment 2)
The present embodiment and embodiment 1 are essentially identical, the difference is that: the electricity as shown in Fig. 7 and Fig. 8, in the present embodiment
Current transformer 8 further includes intelligent control module 82；The periphery wall of core pipe is equipped with resettlement groove 25, and intelligent control module setting is being pacified
It sets in slot；Intelligent control module may include wireless transmit/receive units and alarm buzzer, and intelligent control module is by wirelessly receiving
The secondary voltage or current signal that annular matrix senses are sent to distance host by bill member, with realize it is accurate it is long-range nobody
Monitoring；This structure can make full use of space, be conducive to whole small-sized and integrated.
(embodiment 3)
The present embodiment and embodiment 2 are essentially identical, the difference is that: as shown in Figure 9, the present embodiment is no longer mutual electric current
The annular matrix of sensor is arranged in clamping connection ring, and the annular matrix of current transformer is fixed at core pipe periphery in the present embodiment
On wall, this scheme be also it is feasible, structure is more compact and easily fabricated processing.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And these
Belong to the obvious changes or variations that connotation of the invention is extended out and still falls within protection scope of the present invention.
Claims (1)
1. a kind of intelligent electric power zero sequence current mutual inductor, it is characterised in that: including a core pipe, a plug, an electric current
Mutual inductor, two pressure rings and two sets of wire clipping components；
Core pipe tube wall is equipped with multiple radially-directed holes, and each radially-directed hole includes the accommodating hole and guiding slide opening of connection；
Each pressure ring is rotatably arranged on core pipe periphery wall；Each pressure ring includes that internal perisporium is equipped with the spine ring of multiple slope slots, separation
Two clamping connection rings of spine ring two sides and multiple connecting rivets, two clamping connection rings clamp spine ring, and connecting rivet is axially passed through along core pipe
The spine ring and two clamping connection rings are worn, so that spine ring and two clamping connection rings are fixedly connected into an entirety, the groove of slope slot
Depth, which passes through, to be gradually incremented by；Multiple wedge-shaped anticreep teeth are equipped in each slope slot；Each pressure ring and corresponding a set of clamp
Component adaptation；
Each set wire clipping component includes along the circumferentially equally distributed multiple claw components of core pipe；Two sets of wire clipping components are axial simultaneously along core pipe
Row's setting；Each claw component includes at least three claws and provides the reset spring of reseting elasticity for claw；Each claw includes pressure
Plate portion and the radial traveller being arranged on pressing plate portion outer wall；The outboard end of each radial direction traveller is equipped with and the wedge shape in the slot of spine ring slope
The chisel teeth of anticreep tooth adaptation；The pressing plate portion of each claw is located in core pipe lumen, and the radial traveller of each claw passes through core pipe tube wall
On a corresponding radially-directed hole, reset spring elastic force effect under, it is each radial direction traveller on chisel teeth apical grafting corresponding
On wedge-shaped anticreep tooth in one slope slot；The inner wall of the corresponding pressure ring of radial traveller face in each set wire clipping component is set
It sets, each equal apical grafting of chisel teeth covered in wire clipping component is on the wedge-shaped anticreep tooth in a corresponding pressure ring；
Plug is located in core pipe lumen；The periphery wall of plug is equipped at least three arc clip slots, and each arc clip slot is along core pipe axis
Arc groove setting to extension, on the corresponding claw inner wall of each arc clip slot face；Each arc clip slot and corresponding arc groove
Clamping forms at least three clamp holes altogether；
Current transformer is equipped with annular matrix, and each clamp hole is respectively positioned in the vestibule of annular matrix；
The periphery wall of core pipe is equipped with the block machine of evagination and the annular groove of two indents, and block machine is located in two annular grooves
Between；Core pipe is equipped with multiple for sliding with each radial direction in corresponding a set of wire clipping component on the tube wall between block machine and each annular groove
The radially-directed hole of column adaptation, multiple radially-directed hole is circumferentially uniformly distributed along core pipe；Each radially-directed hole is along core pipe radial direction
Through core pipe tube wall；Accommodating hole and guiding slide opening are set gradually along direction from outside to inside, and accommodating hole and guiding slide opening are round
Hole, the aperture of accommodating hole are greater than the aperture of guiding slide opening, and the cross sectional shape in each radially-directed hole is T-shaped；
Each spine ring drives the wedge-shaped anticreep tooth on its inner wall to rotate when rotating, and by squeezing the radial traveller of each claw, drives phase
Answer the pressing plate portion in a set of wire clipping component mobile towards core pipe center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097553.2A CN105826005B (en) | 2016-01-15 | 2016-01-15 | Intelligent electric power zero sequence current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097553.2A CN105826005B (en) | 2016-01-15 | 2016-01-15 | Intelligent electric power zero sequence current mutual inductor |
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| Publication Number | Publication Date |
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| CN105826005A CN105826005A (en) | 2016-08-03 |
| CN105826005B true CN105826005B (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610097553.2A Active CN105826005B (en) | 2016-01-15 | 2016-01-15 | Intelligent electric power zero sequence current mutual inductor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106558952A (en) * | 2016-12-06 | 2017-04-05 | 西华大学 | A kind of double ring-shaped rotor trimmer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0958758A1 (en) * | 1998-05-20 | 1999-11-24 | Fickinger, Helga | Screw-less tube connector |
| CN2793486Y (en) * | 2005-03-28 | 2006-07-05 | 郑春开 | Clasp cable device |
| CN103490350A (en) * | 2013-10-08 | 2014-01-01 | 国家电网公司 | Peeling and cutting tool for outer semi-conducting layer of crosslinked power cable |
| 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 CN201610097553.2A patent/CN105826005B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0958758A1 (en) * | 1998-05-20 | 1999-11-24 | Fickinger, Helga | Screw-less tube connector |
| CN2793486Y (en) * | 2005-03-28 | 2006-07-05 | 郑春开 | Clasp cable device |
| CN103490350A (en) * | 2013-10-08 | 2014-01-01 | 国家电网公司 | Peeling and cutting tool for outer semi-conducting layer of crosslinked power cable |
| 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 |
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| CN105826005A (en) | 2016-08-03 |
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Effective date of registration: 20181214 Address after: 325600 Wei17 Road, Yanpan Industrial Zone, Yueqing City, Zhejiang Province Applicant after: Yueqing Huazun Electric Co., Ltd. Address before: Room 704, 5 Building, Ganglong City Commercial Plaza, No. 556 Changjiang Road, Suzhou High-tech Industrial Development Zone, Jiangsu Province, 215000 Applicant before: Hu Xiaoqing |
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Effective date of registration: 20210611 Address after: 477150 Light Industry Zone, Dancheng County, Zhoukou City, Henan Province Patentee after: Henan Dexin Electric Co.,Ltd. Address before: 325600 Wei 17 Road, YanPan Industrial Zone, Yueqing City, Zhejiang Province Patentee before: YUEQING HUAZUN ELECTRIC Co.,Ltd. |