CN107438356B - A kind of electric leakage screening arrangement of electric ceramic lightning arrester - Google Patents
A kind of electric leakage screening arrangement of electric ceramic lightning arrester Download PDFInfo
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- CN107438356B CN107438356B CN201710672718.9A CN201710672718A CN107438356B CN 107438356 B CN107438356 B CN 107438356B CN 201710672718 A CN201710672718 A CN 201710672718A CN 107438356 B CN107438356 B CN 107438356B
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- mirror image
- iron core
- vertical magnetic
- lightning arrester
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The invention discloses a kind of electric leakage screening arrangements of electric ceramic lightning arrester, including vertical magnetic masking layer and mirror image material layer, the vertical magnetic masking layer and the perpendicular placement of mirror image material layer, the upper surface of the vertical magnetic masking layer is also fixedly installed with steel plate, magnetic shield panel is additionally provided on the right side of the steel plate, the magnetic shield panel and mirror image material layer are horizontal positioned, mirror image iron core is also fixedly installed on the left side of the steel plate, mirror image coil is additionally provided on the left side of the mirror image iron core, the right end of the mirror image material layer is additionally provided with excitation iron core, excitation coil is provided on the two sides of the excitation iron core, high-intensity magnetic field is generated using with cored excitation coil, the vortex of generation can be preferably minimized by the magnetic screen lamination outside excitation coil, core section is rectangle, increase leakage field area, it effectively reduces Iron core weight improves the shield effectiveness of electric leakage screening arrangement.
Description
Technical field
The present invention relates to electric leakage screening arrangement technical field, the electric leakage screening arrangements of specially a kind of electric ceramic lightning arrester.
Background technique
With the development of economy and science and technology progress, people are increasing for the usage amount of arrester, especially exist
Higher for the overall performance requirement of arrester at high roof, there is also one in terms of detection of electrical leakage for current existing arrester
Fixed defect:
(1) relatively fewer for the electric leak detecting device research of arrester at present, existing electricity supply and use equipment and its all kinds of
Arrester device after a period of time, due to the aging of insulation, goes bad, often generates electric leakage, cause apparatus insulated hit
The major accidents such as wear, burn, or even cause casualties；
(2) existing arrester device bear for a long time excessively high spread voltage and electric field strength easily cause insulator breakdown or
Accelerated ageing destroys its insulation performance, influences the safe and stable operation of route, and service life is shorter；
(3) do not have the measuring device of equipment itself on existing electric leak detecting device yet, equipment itself cannot be carried out
Detection, it is not very practical, it is not easy to repair.
Summary of the invention
In order to overcome the shortcomings of that prior art, the present invention provide a kind of electric leakage screening arrangement of electric ceramic lightning arrester, adopt
High-intensity magnetic field is generated with cored excitation coil, can be obtained and become device, reactor etc. with the large-scale power of large capacity, high-capacity
Comparable leakage field field strength, can be dropped to the vortex of generation most by the magnetic screen lamination outside excitation coil inside electromagnetic product
Low, core section is rectangle, increases leakage field area, effectively reduces iron core weight, improves the shielding of electric leakage screening arrangement
Effect can effectively solve the problem of background technique proposes.
The technical solution adopted by the present invention to solve the technical problems is: a kind of electric leakage screening arrangement of electric ceramic lightning arrester,
Including vertical magnetic masking layer and mirror image material layer, the vertical magnetic masking layer and the perpendicular placement of mirror image material layer, and mirror image material
The upper surface of vertical magnetic masking layer is arranged in the bed of material, and the upper surface of the vertical magnetic masking layer is also fixedly installed with steel plate, described
Magnetic shield panel is additionally provided on the right side of steel plate, the magnetic shield panel and mirror image material layer are horizontal positioned, and mirror image material layer
The right end of magnetic shield panel is set, mirror image iron core, and the lower end of mirror image iron core are also fixedly installed on the left side of the steel plate
It is fixedly connected with the upper surface of vertical magnetic masking layer, mirror image coil, the mirror is additionally provided on the left side of the mirror image iron core
As the right end of material layer is additionally provided with excitation iron core, the fixed company in upper surface of the bottom and vertical magnetic masking layer of the excitation iron core
It connects, is provided with excitation coil on the two sides of the excitation iron core.
As a kind of technical solution for having choosing of the present invention, the surrounding of the vertical magnetic masking layer is equipped with multiple shading rings,
And multiple shading rings are symmetrically distributed in the upper surface of vertical magnetic masking layer.
As a kind of technical solution for having choosing of the present invention, the upper surface of the vertical magnetic masking layer is additionally provided with multiple pillars
Insulator, the support insulator are symmetrically distributed in the corner of vertical magnetic masking layer.
As a kind of technical solution for having choosing of the present invention, the outer surface of the support insulator is provided with epoxy winding pipe,
And it is also filled with urethane material in the inside of support insulator, it is also fixedly mounted at the center of inside of the support insulator
There is plug, and urethane material is laid on the outer surface of plug.
As a kind of technical solution for having choosing of the present invention, the outer surface of the epoxy winding pipe is also equipped with silicon rubber shield
Set.
As a kind of technical solution for having choosing of the present invention, the excitation coil is in the form of a column structure, in the inner wall of excitation coil
The cored stick of upper setting, the outer surface of the excitation coil also magnetic connects shielding laminates.
As a kind of technical solution for having choosing of the present invention, measurement line is also wound on the outer surface of the shielding laminates
Circle, the measuring coil structure annular in shape.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention in the upper surface of vertical magnetic masking layer is provided with shading ring and support insulator, using shading ring with
The ferromagnetic material on top improves shield effectiveness together, use support insulator as pillar can with zinc oxide surge arresters main body mechanism,
Support insulator haves three layers structure, and innermost layer is packing material polyurethane, and middle layer is epoxy winding pipe, and outermost layer is silicon rubber
Sheath intercepts field distribution curve along high-pressure side to low pressure side direction respectively along support insulator and lightning arrester body surface,
Support insulator and lightning arrester body partial region field strength broad in the middle are lower, and high field area is concentrated mainly on lightning arrester body
Near at high and low pressure side, highest field strength appears in the high-pressure side of support insulator and lightning arrester body, by by support insulator
It is prevented with lightning arrester body inclination, so that the lightning shielding effect of lightning arrester body improves；
(2) present invention generates high-intensity magnetic field using with cored excitation coil, can be obtained with large capacity, high-capacity it is big
Type electric power becomes comparable leakage field field strength inside the electromagnetic products such as device, reactor, can be folded by the magnetic screen outside excitation coil
The vortex of generation is preferably minimized by piece, and core section is rectangle, increases leakage field area, effectively reduces iron core weight, is improved
The shield effectiveness of electric leakage screening arrangement.
(3) the detection interface on the outside of excitation coil of the invention using annular measuring coil as electric leakage screening arrangement, leads to
The transient voltage data (voltage waveform may distort) crossed in the measuring coil measured carry out integral calculation to the time, obtain
The Wave data of transient state interlinkage flux in the silicon steel sheet of measuring coil wrapping, takes its maximum value, obtains magnetic flux maximum value, remove
Effective area with the silicon steel sheet for including in the coil, obtains the maximum value of the average flux density of corresponding position, can pass through
Measuring coil detects the shield effectiveness of the electric leakage screening arrangement, practical convenient for repairing to the leakage field device.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is vertical magnetic masking layer the schematic diagram of the section structure of the invention；
Fig. 3 is support insulator structural schematic diagram of the invention；
Fig. 4 is excitation coil structural schematic diagram of the invention.
In figure: the vertical magnetic masking layer of 1-；2- steel plate；3- magnetic shield panel；4- mirror image material layer；5- motivates iron core；6- excitation
Coil；7- mirror image iron core；8- mirror image coil；9- shading ring；10- support insulator；11- silicone rubber jacket；The winding of 12- epoxy
Pipe；13- urethane material；14- plug；15- iron core stick；16- shields laminates；17- measuring coil.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The explanation of following embodiment be with reference to attached drawing, can be to the specific embodiment implemented to the example present invention.
The direction and position term that the present invention is previously mentioned, for example, "upper", " in ", "lower", "front", "rear", "left", "right", "inner", "
Outside ", " side " etc. is only direction and position with reference to annexed drawings.Therefore, the direction and position term used is to illustrate
And understand the present invention, rather than to limit the present invention.
Embodiment:
As shown in Figures 1 to 4, the present invention provides a kind of electric leakage screening arrangements of electric ceramic lightning arrester, including vertical magnetic cup
Layer 1 and mirror image material layer 4 are covered, the vertical magnetic screen is using the silicon steel sheet having a size of 860*20mm, and stack width is
200mm is fixed with binding strap, the vertical magnetic masking layer 1 and the perpendicular placement of mirror image material layer 4, and mirror image material layer 4 is arranged
In the upper surface of vertical magnetic masking layer 1, the upper surface of the vertical magnetic masking layer 1 is also fixedly installed with steel plate 2, the steel plate 2
Right side on be additionally provided with magnetic shield panel 3, the magnetic shield panel 3 and mirror image material layer 4 are horizontal positioned, and mirror image material layer 4
The right end of magnetic shield panel 3 is set, is also fixedly installed with mirror image iron core 7 on the left side of the steel plate 2, and mirror image iron core 7
Lower end is fixedly connected with the upper surface of vertical magnetic masking layer 1, is additionally provided with mirror image coil 8 on the left side of the mirror image iron core 7,
The right end of the mirror image material layer 4 is additionally provided with excitation iron core 5, and the bottom for motivating iron core 5 is upper with vertical magnetic masking layer 1
Surface is fixedly connected, and is provided with excitation coil 6 on the two sides of the excitation iron core 5, the magnetic shield panel 3 towards coil sides can
Approximation is regarded as magnetic field normal direction boundary (thinking that the magnetic flux on the surface is vertical), and steel plate 2 and magnetic shield panel 3 and mirror image iron core 7
Double-iron core mirror image pattern is generated, is capable of the loss of iron core, coil stimulating component under fictitious load operating condition under no-load condition, it should
Double-iron core image method can effectively detect electric leakage screening arrangement shield effectiveness.
The surrounding of the vertical magnetic masking layer 1 is equipped with multiple shading rings 9, and multiple shading rings 9 be symmetrically distributed in it is vertical
The upper surface of formula magnetic masking layer 1；The upper surface of the vertical magnetic masking layer 1 is additionally provided with multiple support insulators 10, the branch
Column insulator 10 is symmetrically distributed in the corner of vertical magnetic masking layer 1, and the outer surface of the support insulator 10 is provided with ring
Oxygen winding pipe 12, and be also filled with urethane material 13 in the inside of support insulator 10, the support insulator 10 it is interior
Portion's centre is also fixedly installed with plug 14, and urethane material 13 is laid on the outer surface of plug 14；The epoxy winding
The outer surface of pipe 12 is also equipped with silicone rubber jacket 11, shields arrester sheet using insulating materials on 10 surface of support insulator
Body, so that the magnetic effect that lightning arrester body surface generates does not interfere with the vertical magnetic masking layer 1 of lower end.
The excitation coil 6 is in the form of a column structure, and cored stick 15, the excitation line are arranged on the inner wall of excitation coil 6
Circle 6 outer surface also magnetic connects shielding laminates 16；Measuring coil is also wound on the outer surface of the shielding laminates 16
17, the diameter of wire of the measuring coil 17 structure annular in shape, coiling measuring coil 17 is 0.04mm, and position is located in coil
On heart cross section.Measuring coil 17 is close to silicon steel sheet coiling, it is believed that does not have between measuring coil 17 and the silicon steel sheet being wrapped
There is air gap.
In conclusion the main characteristic of the invention lies in that:
(1) present invention in the upper surface of vertical magnetic masking layer is provided with shading ring and support insulator, using shading ring with
The ferromagnetic material on top improves shield effectiveness together, use support insulator as pillar can with zinc oxide surge arresters main body mechanism,
Support insulator haves three layers structure, and innermost layer is packing material polyurethane, and middle layer is epoxy winding pipe, and outermost layer is silicon rubber
Sheath intercepts field distribution curve along high-pressure side to low pressure side direction respectively along support insulator and lightning arrester body surface,
Support insulator and lightning arrester body partial region field strength broad in the middle are lower, and high field area is concentrated mainly on lightning arrester body
Near at high and low pressure side, highest field strength appears in the high-pressure side of support insulator and lightning arrester body, by by support insulator
It is prevented with lightning arrester body inclination, so that the lightning shielding effect of lightning arrester body improves；
(2) present invention generates high-intensity magnetic field using with cored excitation coil, can be obtained with large capacity, high-capacity it is big
Type electric power becomes comparable leakage field field strength inside the electromagnetic products such as device, reactor, can be folded by the magnetic screen outside excitation coil
The vortex of generation is preferably minimized by piece, and core section is rectangle, increases leakage field area, effectively reduces iron core weight, is improved
The shield effectiveness of electric leakage screening arrangement.
(3) the detection interface on the outside of excitation coil of the invention using annular measuring coil as electric leakage screening arrangement, leads to
The transient voltage data (voltage waveform may distort) crossed in the measuring coil measured carry out integral calculation to the time, obtain
The Wave data of transient state interlinkage flux in the silicon steel sheet of measuring coil wrapping, takes its maximum value, obtains magnetic flux maximum value, remove
Effective area with the silicon steel sheet for including in the coil, obtains the maximum value of the average flux density of corresponding position, can pass through
Measuring coil detects the shield effectiveness of the electric leakage screening arrangement, practical convenient for repairing to the leakage field device.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (7)
1. a kind of electric leakage screening arrangement of electric ceramic lightning arrester, it is characterised in that: including vertical magnetic masking layer (1) and mirror image material layer
(4), the vertical magnetic masking layer (1) and mirror image material layer (4) perpendicular placement, and mirror image material layer (4) is arranged in vertical magnetic
The upper surface of the upper surface of shielded layer (1), the vertical magnetic masking layer (1) is also fixedly installed with steel plate (2), the steel plate (2)
Right side on be additionally provided with magnetic shield panel (3), the magnetic shield panel (3) and mirror image material layer (4) are horizontal positioned, and mirror image material
The right end in magnetic shield panel (3) is arranged in the bed of material (4), is also fixedly installed with mirror image iron core (7) on the left side of the steel plate (2),
And the lower end of mirror image iron core (7) is fixedly connected with the upper surface of vertical magnetic masking layer (1), the left side of the mirror image iron core (7)
On be additionally provided with mirror image coil (8), the right end of the mirror image material layer (4) be additionally provided with excitation iron core (5), the excitation iron core
(5) bottom is fixedly connected with the upper surface of vertical magnetic masking layer (1), is provided on the two sides of excitation iron core (5)
Excitation coil (6).
2. a kind of electric leakage screening arrangement of electric ceramic lightning arrester according to claim 1, it is characterised in that: the vertical magnetic cup
The surrounding for covering layer (1) is equipped with multiple shading rings (9), and multiple shading rings (9) are symmetrically distributed in vertical magnetic masking layer (1)
Upper surface.
3. a kind of electric leakage screening arrangement of electric ceramic lightning arrester according to claim 1, it is characterised in that: the vertical magnetic cup
The upper surface for covering layer (1) is additionally provided with multiple support insulators (10), and the support insulator (10) is symmetrically distributed in vertical
The corner of magnetic masking layer (1).
4. a kind of electric leakage screening arrangement of electric ceramic lightning arrester according to claim 3, it is characterised in that: the post insulator
The outer surface of sub (10) is provided with epoxy winding pipe (12), and is also filled with polyurethane material in the inside of support insulator (10)
Layer (13) is also fixedly installed with plug (14) at the center of inside of the support insulator (10), and urethane material (13)
It is laid on the outer surface of plug (14).
5. a kind of electric leakage screening arrangement of electric ceramic lightning arrester according to claim 4, it is characterised in that: the epoxy winding
The outer surface of pipe (12) is also equipped with silicone rubber jacket (11).
6. a kind of electric leakage screening arrangement of electric ceramic lightning arrester according to claim 1, it is characterised in that: the excitation coil
(6) it is in the form of a column structure, is arranged on the inner wall of excitation coil (6) cored stick (15), the outer surface of the excitation coil (6) is also
Magnetic connects shielding laminates (16).
7. a kind of electric leakage screening arrangement of electric ceramic lightning arrester according to claim 6, it is characterised in that: the shielding stacking
It is also wound on the outer surface of piece (16) measuring coil (17), the measuring coil (17) structure annular in shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710672718.9A CN107438356B (en) | 2017-08-08 | 2017-08-08 | A kind of electric leakage screening arrangement of electric ceramic lightning arrester |
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| CN201710672718.9A CN107438356B (en) | 2017-08-08 | 2017-08-08 | A kind of electric leakage screening arrangement of electric ceramic lightning arrester |
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| Publication Number | Publication Date |
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| CN107438356A CN107438356A (en) | 2017-12-05 |
| CN107438356B true CN107438356B (en) | 2019-08-06 |
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| CN108801970A (en) * | 2018-06-11 | 2018-11-13 | 清华大学深圳研究生院 | The detection method of support insulator boundary defect and interface state |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11150004A (en) * | 1997-11-18 | 1999-06-02 | Toshiba Corp | Method for measuring leakage current for resistance and device therefor |
| CN101872957B (en) * | 2009-04-27 | 2013-10-02 | 黄华道 | Leakage current detection protection circuit |
| CN201774225U (en) * | 2009-11-19 | 2011-03-23 | 黄华道 | Electric leakage detecting protection circuit |
| CN102944738A (en) * | 2012-12-07 | 2013-02-27 | 上海市电力公司 | Detection system and detection method for leakage current of switchgear arrester |
| CN105223433A (en) * | 2015-08-26 | 2016-01-06 | 芜湖市凯鑫避雷器有限责任公司 | Metal oxide arrester on-line monitoring system |
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