CN103424593B - A kind of insulator core cavity sealing device and current sensor/transformer - Google Patents
A kind of insulator core cavity sealing device and current sensor/transformer Download PDFInfo
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- CN103424593B CN103424593B CN201310319665.4A CN201310319665A CN103424593B CN 103424593 B CN103424593 B CN 103424593B CN 201310319665 A CN201310319665 A CN 201310319665A CN 103424593 B CN103424593 B CN 103424593B
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Abstract
The present invention relates to a kind of insulator core cavity sealing device and use the current sensor/transformer of this device, this device is for sealing the insulator core cavity inserting optical fiber, mobility or half mobility iknsulating liquid it is filled with in insulator core cavity, this device includes water joint, sleeve pipe, sleeve cap and filler, water joint docks with insulator end flange, sleeve pipe insert water joint internal and with water joint clamping, the both sides end face of sleeve pipe is respectively provided with the hole through optical fiber, filler it is provided with in sleeve pipe, in optical fiber is fixed on sleeve pipe by filler and play sealing function, sleeve cap is arranged on the tail end of sleeve pipe, the hole of optical fiber it is provided through on the end face of sleeve cap.Device of the present invention can solve the problem that the sealing of the insulator core cavity internal mobility/half mobility iknsulating liquid wearing optical fiber, is further ensured that the properly functioning of electrical network, and has the advantages such as simple in construction, low processing cost, easily operation, efficient, safety.
Description
Technical field
The present invention relates to a kind of electrical equipment technical field, particularly one in current sensor or current transformer for absolutely
Sealing device that edge core cavity seals and use current sensor or the current transformer of this sealing device.
Background technology
Current sensor/transformer (being called for short CT) is relay protection and the visual plant of electric energy metrical in power system, is used for surveying
Size of current in amount transmission, and size of current transmission measurement arrived is to measuring instrument and protective relaying device.It is steady in a long-term
Property, reliability, security are closely related with the safe and stable operation of power system.Traditional electromagnetic transformer is owing to existing
Unvanquishable difficulty in some principles, e.g., ferromagnetic resonance, magnetic saturation, band limiting etc., run in voltage levels and exist
Potential safety hazard.And optical current mutual inductor of based on Faraday effect can overcome problem above, therefore obtain in power system
Extensively application.
The optical fiber of Faraday effect optical current mutual inductor its primary side sensing unit in use must connect through insulator and secondary side
Connect.Now, core rod of insulator is necessary for hollow, i.e. forms insulator core cavity, in order to optical fiber passes through.Light is penetrated in insulator
Generally sealing with colloid after fibre, insulator 2 core cavity in existing Faraday effect optical current mutual inductor as shown in Figure 1 is close
Seal structure schematic diagram.Insulator 2 internal structure shown in Fig. 1 is simple, but must use glue after penetrating optical fiber 1 because of insulator 2 core cavity
Body seals, and this colloid is solid-filling glue 3, and therefore the airtight quality of colloid directly determines the security of insulator.Example
As: if there is bubble when colloid seals, high voltage electric field can carry out lasting electric discharge to bubble, thus causes the carbonization of sealed colloid；
Shorten creep age distance further, thus bring potential safety hazard.
For these reasons, another kind of seal form can overcome appeal shortcoming, does not the most use colloid to fill, but at insulator
Mobility/half mobility iknsulating liquid is filled in core cavity.But after being filled with mobility/half mobility iknsulating liquid, seal and often become technology
A difficult problem, seepage is also the most inevitable.
Summary of the invention
The present invention is directed to the insulator in existing current sensor/transformer uses colloid sealing to there is potential safety hazard, and uses stream
Dynamic property/half mobility iknsulating liquid fills the difficult problem sealed, it is provided that a kind of novel insulator core cavity sealing device, it is possible to solve
Certainly wear the sealing of the insulator core cavity internal mobility/half mobility iknsulating liquid of optical fiber, be further ensured that the properly functioning of electrical network,
And there is the advantages such as simple in construction, low processing cost, easily operation, efficient, safety.The invention still further relates to a kind of employing above-mentioned
Current sensor/the transformer of insulator core cavity sealing device.
Technical scheme is as follows:
A kind of insulator core cavity sealing device, for sealing the insulator core cavity inserting optical fiber, fills in described insulator core cavity
There are mobility or half mobility iknsulating liquid, it is characterised in that include water joint, sleeve pipe, sleeve cap and filler, described
Water joint docks with insulator end flange, described sleeve pipe insert water joint internal and with water joint clamping, described sleeve pipe
Both sides end face be respectively provided with the hole through optical fiber, be provided with filler in described sleeve pipe, optical fiber is fixed on sleeve pipe by described filler
In and play sealing function, described sleeve cap is arranged on the tail end of sleeve pipe, and the end face of described sleeve cap is provided through optical fiber
Hole.
Also including sealing ring, described water joint is docked with insulator end flange seal by sealing ring.
Described sleeve pipe is half pass-through type structure, and a side end face of described sleeve pipe has the optic fibre hole mated with fiber cross-sections, sleeve pipe
Opposite side end face be penetrating, described filler is filled in sleeve pipe by described penetrating.
The quantity of the optic fibre hole on described sleeve pipe one side end face is identical with the number of fibers inserting insulator core cavity；Or described optic fibre hole
Size match with the total cross section size of multifiber inserting insulator core cavity.
Described filler is the colloid of form stable, and described filler is not dissolved in the mobility in insulator core cavity or half mobility
Iknsulating liquid.
The cross sectional shape of described sleeve pipe is circle, regular polygon or ellipse, tight seal between described sleeve pipe and water joint.
Described sleeve cap is directly sleeved on the tail end of sleeve pipe, or the tail end twist-on of described sleeve cap and sleeve pipe or clamping.
When the tail end twist-on of described sleeve cap and sleeve pipe, the end face of described sleeve cap is provided with the structure being easy to twist-on, described just
Structure in twist-on is flat recess or cross recess；Or the side of described sleeve cap is with decorative pattern；Or the side of described sleeve cap is arranged
There is the plane being easy to twist-on.
Described water joint includes metal part and internal rubber sleeve or the nylon jacket of outside, and described water joint is by inside
Rubber sleeve or nylon jacket and sleeve pipe tight seal, docked with insulator end flange seal by outside metal part.
A kind of current sensor or current transformer, including insulator and optical fiber, described optical fiber inserts insulator core cavity, its feature
It is, in described insulator core cavity, is filled with mobility or half mobility iknsulating liquid, in the two ends employing of described insulator core cavity
The insulator core cavity sealing device stated.
The technique effect of the present invention is as follows:
The insulator core cavity sealing device that the present invention provides, including water joint, sleeve pipe, sleeve cap and filler, water joint
Dock with insulator end flange, sleeve pipe insert water joint internal and with water joint clamping, the both sides end face of sleeve pipe is the most corresponding
Being provided through the hole of optical fiber, in order to penetrate optical fiber in sleeve pipe, optical fiber penetrates from one end end face of sleeve pipe, from the sleeve pipe other end
End face passes；Being fixed in sleeve pipe by optical fiber with filler, filler simultaneously works as sealing function, sleeve pipe and its inner stuffing energy
The mobility filled in enough intercepting insulator core cavity or half mobility iknsulating liquid, solve to wear the insulator core cavity internal mobility of optical fiber
Or half sealing problem of mobility iknsulating liquid, it is possible to increase resistance to pressure, thus improve the sealing of entirety.Tail at sleeve pipe
End installs sleeve cap, and the end face of sleeve cap is provided through the hole of optical fiber, and final optical fiber passes from the end face of sleeve cap, sleeve pipe
Cap prevents filler from coming off, and reaches the effect sealed further.Sleeve pipe entirety is inserted in water joint, and by waterproof
Joint is docked on the flange filling mobility/half mobility iknsulating liquid insulator end, plays sealing function, thus improves insulation
The security of son, is further ensured that the properly functioning of electrical network.The sealing device structure of the present invention is simple, low processing cost, tool
There is the advantage such as easily operation, efficient, safety.
Use current sensor or the current transformer (hereinafter referred to as current sensor/mutual inductance of above-mentioned insulator core cavity sealing device
Device), it is mobility or half mobility iknsulating liquid due to fill in insulator core cavity, and after penetrating optical fiber in insulator core cavity
The insulator core cavity sealing device using the present invention seals, it is possible to realize insulation at optical fiber in the case of this sealing device
Sub-core cavity seals, it is to avoid existing current sensor/transformer uses solid-filling glue to be easily generated gas when being filled into insulator core cavity
Bubble, causes the carbonization of sealed colloid owing to high voltage electric field can carry out lasting electric discharge to bubble, and shortens creep age distance, bring peace
The problem of full hidden danger, fills mobility in insulator core cavity or half mobility iknsulating liquid eliminates insulator potential safety hazard, insulation
Sub-core cavity sealing device solves again sealing problem, meets the requirement of insulator sealing property, improves current sensor/transformer
Overall sealing performance, is further ensured that the properly functioning of electrical network.
Sealing ring is set so that water joint is docked with insulator end flange seal by this sealing ring, so, water joint
Can realize sealing closely with insulator end flange, improve the overall sealing performance of sealing device further.
The half pass-through type structure that sleeve pipe is unique is set, a side end face of sleeve pipe arranges the optic fibre hole mated with fiber cross-sections, with
Ensureing that optical fiber passes through from this end of sleeve pipe, the quantity of optic fibre hole or size can adjust according to the number of fibers penetrated.Sleeve pipe another
End face is set to penetrating, to be further ensured that the loading of filler.
The colloid that filler in sleeve pipe is form stable is set, and the filler used is not dissolved in the flowing in insulator core cavity
Property or half mobility iknsulating liquid, even if this setting makes the mobility in insulator core cavity or half mobility iknsulating liquid by set
Hole on pipe enters sleeve pipe, owing to filler is not dissolved in the mobility in this insulator core cavity or half mobility iknsulating liquid, therefore
Mobility or half mobility iknsulating liquid also only can rest on sleeve pipe oral area, will not enter inside pipe casing, and filler can be complete by it
Entirely isolate and seal, and filler is the colloid of form stable, further ensures insulator security, improves sealing,
Properly functioning for electrical network provides guarantee.
Socket or twist-on or clamping are set between sleeve cap and the tail end of sleeve pipe, by between sleeve cap and sleeve pipe cooperate and
The simple structure easily realized, it is ensured that sleeve cap can be combined closely with sleeve pipe and will not come off, also functions to prevent from further filling simultaneously
The effect that thing comes off.
Arranging water joint and include metal part and internal rubber sleeve or the nylon jacket of outside, this waterproof joint structure the most easily adds
Work is molded, it is possible to make this water joint can and sleeve pipe between realize sealing closely, and realize water joint and insulation
Seal closely between sub-end flange.
Accompanying drawing explanation
Fig. 1 is the insulator core cavity sealing structure schematic diagram in existing current transformer.
Fig. 2 is the structural representation of insulator core cavity sealing device of the present invention.
Fig. 3 is the preferred structure schematic diagram of insulator core cavity sealing device of the present invention.
Fig. 4 is the use state diagram of insulator core cavity sealing device of the present invention.
Fig. 5 is the partial enlarged drawing of Fig. 4.
In figure, each label lists as follows:
1-optical fiber；2-insulator；3-solid-filling glue；4-mobility or half mobility iknsulating liquid；5-sealing device；
6-water joint；7-sleeve pipe；8-filler；9-sleeve cap；10-sealing ring；11-rubber sleeve；12-metal part；
13-optic fibre hole；Penetrating of 14-.
Detailed description of the invention
The present invention will be described below in conjunction with the accompanying drawings.
The present invention relates to a kind of insulator core cavity sealing device, for the insulator core cavity inserting optical fiber is sealed, insulator core cavity
Inside being filled with mobility or half mobility iknsulating liquid, the structure of this insulator core cavity sealing device is as in figure 2 it is shown, be along insulation
The profile of the axis of son, including water joint 6, sleeve pipe 7, sleeve cap 9 and filler 8, water joint 6 and insulator end
The docking of portion flange, sleeve pipe 7 insert water joint 6 internal and with water joint 6 clamping, the both sides end face of sleeve pipe 7 is respectively provided with to be worn
Cross the hole of optical fiber 1, in sleeve pipe 7, be provided with filler 8, in optical fiber is fixed on sleeve pipe by filler and play sealing function, set
Pipe cap 9 is arranged on the tail end of sleeve pipe 8, and the end face of sleeve cap 9 is provided through the hole of optical fiber 1.
Fig. 3 is the preferred structure schematic diagram of insulator core cavity sealing device of the present invention, and the insulator core cavity shown in this embodiment seals
Device, in addition to including parts shown in Fig. 2, also includes sealing ring 10, and water joint 6 is by sealing ring 10 and insulator end method
Blue sealing is docked, and to realize the close sealing of water joint 6 and insulator end flange, improves the integral sealing of sealing device
Performance.Sleeve pipe 7 is preferably half pass-through type structure, a side end face of sleeve pipe 7 has and the optic fibre hole 13 of optical fiber 1 cross-sections match,
Optic fibre hole 13 ensures that optical fiber 1 passes through from this end face of sleeve pipe 7.The number of the optical fiber 1 inserting insulator 2 core cavity can root
Border application adjusts factually, when optical fiber 1 is many, such as two or more than two, can arrange on this side end face of sleeve pipe 7
The quantity of optic fibre hole 13 is identical, it is of course also possible to arrange an optic fibre hole 13 with optical fiber 1 quantity inserting insulator 2 core cavity
And the size of this optic fibre hole 13 is matched with the total cross section size of the multifiber 1 inserting insulator core cavity, optic fibre hole 13
Quantity or size can adjust according to the quantity of the optical fiber 1 penetrated.The opposite side end face of sleeve pipe 7 is penetrating face 14, sleeve pipe
7 tail ends that this side is sleeve pipe 7 arranging penetrating face 14, this penetrating face 14 can be that whole end face is penetrating；Or in only arranging
Between penetrating face, be now construed as middle wide-bore, the aperture of this macropore much larger than the aperture of the optic fibre hole 13 of other end,
Being i.e. macropore on a side end face of sleeve pipe 7, opposite side end face is aperture (optic fibre hole), filler 8 is by this penetrating face 14
Filling to sleeve pipe 7, the setting in penetrating face 14 can be further ensured that the loading of filler 8.
Filler in sleeve pipe 78 is preferably the colloid of form stable, such as silica gel, or the mixing of epoxy resin and curing agent
Glue etc..Filler 8 uses and is not dissolved in the mobility in insulator core cavity or half mobility iknsulating liquid so that if there being insulator
When mobility in core cavity or half mobility iknsulating liquid enter sleeve pipe 7 by the optic fibre hole 13 on sleeve pipe 7, be filled thing 8 every
From, mobility or half mobility iknsulating liquid only can be docked to the port of sleeve pipe 7, improve sealing property.For ease of installing,
Filler 8 is preferably not because outside is come off by machinery, the stress of physics, is preferably not because waving in high temperature, high humidity environment simultaneously
Send out.To sum up, filler 8 is preferably silica gel, or be the epoxy glue of epoxy resin and curing agent, it is also possible to selection atomized ash and
The mixture etc. of curing agent.Wherein, silica gel is the most volatile and have splendid stability and tack in high temperature, high humidity environment；
Epoxy resin and the epoxy glue of curing agent are the epoxy glues that epoxy resin and curing agent mix formation according to certain ratio,
Mechanical strength height after its curing molding, form stable, high-and low-temperature resistance and insoluble in the liquid such as strong acid, highly basic；Atomized ash is with solid
The mixture of agent be atomized ash is mixed according to a certain percentage with curing agent after formed mixture, have form stable,
Tack is good, mechanical strength is high after curing molding, the application characteristics such as temperature is consistent with environment temperature, not readily dissolve.The present invention
Filler 8 described in embodiment has operation with low cost, easy (can under any environment temperature and indoor and outdoor are filled with) simultaneously
The feature such as nontoxic, tasteless.
The shape of sleeve pipe 7 is not limited to the shape shown in Fig. 3, and cross section can be circle, regular polygon or ellipse etc., sleeve pipe
The 7 any shapes used are both needed to ensure that water joint 6 can clamp sleeve 7 closely so that sleeve pipe 7 and water joint 6
Between tight seal.
Water joint 6 in embodiment illustrated in fig. 3 includes rubber sleeve 11 and outside metal part 12, the water joint 6 of inside
By internal rubber sleeve 11 clamping sleeve pipe 7, docked with insulator end flange seal by outside metal part 12, also
Nut can be set at the afterbody of water joint 6, by screwing the nut of water joint 6 tail end, sleeve pipe 7 is stuck in anti-closely
In water swivel 6.This water joint 6 easy machine-shaping of simple in construction, and make this water joint 6 can and sleeve pipe 7 between
Realizing sealing closely, water joint 6 also is able to seal closely between insulator end flange simultaneously, certainly, and the anti-fire hose
The structure of head is not limited to structure shown in Fig. 3, it is also possible to include the nylon jacket of inside and outside metal part, or by other structure
Composition.
Sleeve cap 9 is arranged on the tail end of sleeve pipe 7, and the shape of sleeve cap 9 is not limited to the shape shown in Fig. 3, the most permissible
It is sleeve cap 9 tail end that is directly sleeved on sleeve pipe 7, or the tail end of sleeve cap 9 and sleeve pipe 7 is by screw thread twist-on, or
The form clamping by cutting ferrule of the tail end of sleeve cap 9 and sleeve pipe 7.When the tail end of sleeve cap 9 with sleeve pipe 7 passes through screw thread twist-on,
Then the outer face of sleeve cap 9 or lateral surface are provided with the structure design of easy disassembly, specifically can arrange at the end face of sleeve cap 9
The structure of convenient screwdriver twist-on, such as arranges flat recess or cross recess or the groove of other convenient screwdriver twist-on；Also may be used
With the side at sleeve cap 9, decorative pattern is set；Or the side of sleeve cap 9 is provided with plane being easy to twist-on etc..Above-mentioned
Setting can be by the simple structure easily realized cooperated, it is ensured that sleeve cap 9 can be combined closely with sleeve pipe 7 and will not come off,
Also function to the effect preventing filler 8 from coming off further simultaneously.
As shown in Figure 4, Fig. 5 is the partial enlarged drawing of its A view in the use state diagram of insulator core cavity sealing device of the present invention.
As seen from Figure 4, optical fiber 1 penetrates in insulator 2 core cavity, is filled with mobility or half mobility dielectric in insulator 2 core cavity
Body 4, Fig. 4 is the profile of the axis along insulator, be parallel to axis direction, insulator 2 two ends it can be seen that this
Bright insulator core cavity sealing device 5(hereinafter referred to as sealing device 5), sealing device 5 is arranged on the end of insulator 2 both sides
On flange, docking with insulator 2 end flange particular by water joint 6, the concrete form of docking can be clamping or twist
Connect.Fig. 5 can be understood as the enlarged drawing of sealing device 5, sealing device 5 by be arranged on water joint 6 periphery and
Sealing ring 10 at water joint 6 with insulator end flange joint realizes and insulator end flange tight seal.
The concrete installation steps of insulator core cavity sealing device of the present invention are, first the optic fibre hole 13 from a side end face of sleeve pipe 7 penetrates
Optical fiber 1, and optical fiber 1 is passed from the penetrating face 14 of the opposite side end face of sleeve pipe 7, leading to from the opposite side end face of sleeve pipe 7 afterwards
Face 14 pours into filler 8 in sleeve pipe 7 thoroughly, and filler 8 can be the colloid that classes such as silica gel have relatively stable form, no
It is dissolved in insulator core cavity internal mobility or half mobility iknsulating liquid, is not come off, no by machinery, the stress of physics because of outside
Because high temperature, high humidity environment volatilize.By the time sleeve pipe 7 is inserted into after solidified forming in sleeve pipe 7 by filler 8 together with optical fiber 1
In water joint 6, by screwing the nut of water joint 6 tail end, sleeve pipe 7 is stuck in water joint 6 closely, and will be anti-
Water swivel 6 twist-on is in insulator 2 end flange.Again by optical fiber 1 through sleeve cap 9, then by sleeve cap 9 by directly
Socket or the process Installation such as clamping or twist-on, on sleeve pipe 7, increase the crushing resistance of insulator core cavity sealing device of the present invention, thus
Improve sealing.The installation of insulator core cavity sealing device of the present invention is completed through above-mentioned steps.
Certainly, the order of above-mentioned installation steps not exclusive, it is also possible to change, such as insulator core cavity of the present invention is sealed
After the sleeve pipe 7 of device penetrates optical fiber 1, in sleeve pipe 7, pour into filler 8, with filler 8, optical fiber 1 is fixed on sleeve pipe 7
In, filler 8 simultaneously works as sealing function, and after filler filling sealing, the tail end at sleeve pipe 7 loads onto sleeve cap 9, carries
High resistance to pressure, thus improve the sealing of entirety, then sleeve pipe 7 entirety is inserted in water joint 6, finally connects waterproof
6 twist-ons are in insulator 2 end flange.Whole insulator core cavity sealing device installation, solves the insulation wearing optical fiber
Sub-core cavity internal mobility or the sealing problem of half mobility iknsulating liquid.
The invention still further relates to a kind of current sensor or current transformer, the structural representation of its part building block refers to Fig. 4,
Fig. 5 is partial enlarged drawing, and current sensor/transformer includes insulator 2 and optical fiber 1, and optical fiber 1 inserts insulator 2 core cavity,
Being filled with mobility or half mobility iknsulating liquid 4 in insulator 2 core cavity, the two ends of insulator 2 core cavity use the present invention above-mentioned
Insulator core cavity sealing device 5.In current sensor of the present invention or current transformer, due to insulator 1 core cavity
Interior filling is mobility or half mobility iknsulating liquid 4, as used insulating oil etc., it is to avoid prior art uses solid-filling
Glue causes, owing to bubble causes the carbonization of sealed colloid, shortening creep age distance, and the problem bringing potential safety hazard, at insulator 2 core
Fill mobility in chamber or half mobility iknsulating liquid eliminates insulator potential safety hazard, at the both side ends flange of insulator core cavity
Use sealing device 5 of the present invention, on the premise of optical fiber 1 can pass, it is possible to conscientiously, efficiently solve and fill mobility or half
The insulator sealing problem of mobility iknsulating liquid, it is ensured that insulator core cavity sealing property, and then improve current sensor/mutually
The overall sealing performance of sensor, is further ensured that the properly functioning of electrical network.
It should be pointed out that, that the above detailed description of the invention can make those skilled in the art that the invention is more fully understood,
But limit the invention never in any form.Therefore, although the invention is entered by this specification referring to the drawings with embodiment
Gone detailed description, it will be understood by those skilled in the art, however, that still the invention can be modified or etc.
With replacing, in a word, all are without departing from the technical scheme of the spirit and scope of the invention and improvement thereof, and it all should be contained at this
In the middle of the protection domain of patented invention-creation.
Claims (9)
1. an insulator core cavity sealing device, for sealing the insulator core cavity inserting optical fiber, fills out in described insulator core cavity
It is filled with mobility or half mobility iknsulating liquid, it is characterised in that include water joint, sleeve pipe, sleeve cap and filler, institute
State water joint to dock with insulator end flange, described sleeve pipe insert water joint internal and with water joint clamping, described set
The both sides end face of pipe is respectively provided with the hole through optical fiber, is provided with filler in described sleeve pipe, and optical fiber is fixed on set by described filler
Pipe is interior and plays sealing function, and described sleeve cap is arranged on the tail end of sleeve pipe, and the end face of described sleeve cap is provided through optical fiber
Hole；Described filler is the colloid of form stable, and described filler is not dissolved in the mobility in insulator core cavity or half flowing
Property iknsulating liquid.
Insulator core cavity sealing device the most according to claim 1, it is characterised in that also include sealing ring, described waterproof
Joint is docked with insulator end flange seal by sealing ring.
Insulator core cavity sealing device the most according to claim 1 and 2, it is characterised in that described sleeve pipe is half pass-through type
Structure, a side end face of described sleeve pipe has the optic fibre hole mated with fiber cross-sections, and the opposite side end face of sleeve pipe is penetrating,
Described filler is filled to sleeve pipe by described penetrating.
Insulator core cavity sealing device the most according to claim 3, it is characterised in that the light on described sleeve pipe one side end face
The quantity in fine hole is identical with the number of fibers inserting insulator core cavity；Or the size of described optic fibre hole is with to insert insulator core cavity many
The total cross section size of root optical fiber matches.
Insulator core cavity sealing device the most according to claim 3, it is characterised in that the cross sectional shape of described sleeve pipe for circle,
Regular polygon or ellipse, tight seal between described sleeve pipe and water joint.
Insulator core cavity sealing device the most according to claim 1, it is characterised in that described sleeve cap is directly sleeved on sleeve pipe
Tail end, or the tail end twist-on of described sleeve cap and sleeve pipe or clamping.
Insulator core cavity sealing device the most according to claim 6, it is characterised in that when the tail of described sleeve cap Yu sleeve pipe
During end twist-on, the end face of described sleeve cap is provided with the structure being easy to twist-on, described in be easy to the structure of twist-on be flat recess or cross
Groove；Or the side of described sleeve cap is with decorative pattern；Or the side of described sleeve cap is provided with the plane being easy to twist-on.
Insulator core cavity sealing device the most according to claim 1, it is characterised in that described water joint includes outside
Metal part and internal rubber sleeve or nylon jacket, described water joint is the closeest with sleeve pipe by internal rubber sleeve or nylon jacket
Envelope, is docked with insulator end flange seal by outside metal part.
9. current sensor or a current transformer, including insulator and optical fiber, described optical fiber inserts insulator core cavity, and it is special
Levying and be, be filled with mobility or half mobility iknsulating liquid in described insulator core cavity, the two ends of described insulator core cavity use
The insulator core cavity sealing device that one of claim 1 to 8 is described.
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| CN201310319665.4A CN103424593B (en) | 2013-07-26 | 2013-07-26 | A kind of insulator core cavity sealing device and current sensor/transformer |
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| CN104237596B (en) * | 2014-08-27 | 2017-03-01 | 易能乾元（北京）电力科技有限公司 | There is harvester and all-fiber current transformator and the installation method of fiber optic protection |
| CN106125221A (en) * | 2016-07-26 | 2016-11-16 | 易能乾元（北京）电力科技有限公司 | A kind of ferrule for power equipment and electronic current mutual inductor |
| US10151695B2 (en) | 2017-03-16 | 2018-12-11 | Oetiker Ny, Inc. | Optical assurance cap |
| CN111029993A (en) * | 2019-12-29 | 2020-04-17 | 南京电博机器人技术有限公司 | High-voltage bushing salt corrosion prevention device and method based on charged perfusion |
| CN116449070B (en) * | 2023-06-16 | 2023-09-05 | 常州博瑞电力自动化设备有限公司 | Optical transformer |
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| CN203350327U (en) * | 2013-07-26 | 2013-12-18 | 易能乾元（北京）电力科技有限公司 | Insulator core chamber sealing device and current sensor/transformer |
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| JP2644784B2 (en) * | 1987-12-01 | 1997-08-25 | 日本碍子株式会社 | Insulator device with optical signal transmission function |
| JPH01246724A (en) * | 1988-03-28 | 1989-10-02 | Ngk Insulators Ltd | Optical-fiber complex insulator and its manufacture |
| DE68915714T2 (en) * | 1988-12-06 | 1994-11-03 | Ngk Insulators Ltd | Optical fiber isolator and process for its manufacture. |
| JPH04273069A (en) * | 1991-02-27 | 1992-09-29 | Sumitomo Electric Ind Ltd | Current and voltage detector |
| WO2006097972A1 (en) * | 2005-03-11 | 2006-09-21 | Fujitsu Limited | Feedthrough of submarine repeating installation and submarine repeating installation |
| CN101587214A (en) * | 2009-06-25 | 2009-11-25 | 哈尔滨工业大学 | Soft insulating optical fiber insulator |
| CN103065744B (en) * | 2013-01-07 | 2017-06-13 | 江苏神马电力股份有限公司 | Composite insulator flange |
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| CN203350327U (en) * | 2013-07-26 | 2013-12-18 | 易能乾元（北京）电力科技有限公司 | Insulator core chamber sealing device and current sensor/transformer |
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