CN103424593A - Insulator core chamber sealing device and current sensor/transformer - Google Patents
Insulator core chamber sealing device and current sensor/transformer Download PDFInfo
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- CN103424593A CN103424593A CN2013103196654A CN201310319665A CN103424593A CN 103424593 A CN103424593 A CN 103424593A CN 2013103196654 A CN2013103196654 A CN 2013103196654A CN 201310319665 A CN201310319665 A CN 201310319665A CN 103424593 A CN103424593 A CN 103424593A
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Abstract
The invention relates to an insulator core chamber sealing device and a current sensor/transformer with the same. The insulator core chamber sealing device is used for sealing an insulator core chamber inserted with an optical fiber, and the insulator core chamber is filled with fluid or semi-fluid insulating liquid. The device comprises a waterproof connector, a sleeve, a sleeve cap and filler, the waterproof connector is in butt joint with a flange at the end of an insulator, the sleeve is inserted into the waterproof connector and clamped with the waterproof connector, holes allowing the optical fiber to penetrate are formed in end faces of both sides of the sleeve, the filler is arranged in the sleeve, fixes the optical fiber in the sleeve and functions in sealing, the sleeve cap is mounted at the tail end of the sleeve, and a hole allowing the optical fiber to penetrate is formed in the end face of the sleeve cap. The device can achieve sealability of the fluid/semi-fluid insulating liquid in the insulator core chamber for penetration of the optical fiber to further guarantee normal operation of a power grid, and has the advantages of simple structure, low processing cost, easiness in operation, high efficiency, safety and the like.
Description
Technical field
The present invention relates to a kind of electrical equipment technical field, particularly a kind of in current sensor or current transformer for the packoff to insulator core chamber sealing and adopt current sensor or the current transformer of sealing device.
Background technology
Current sensor/mutual inductor (be called for short CT) is the visual plant of relay protection and electric energy metrical in electric system, is used for measuring the size of current in transmitting, and the size of current measured is sent to surveying instrument and protective relaying device.Safety, the stable operation of its long-time stability, reliability, security and electric system are closely related.Traditional electromagnetic transformer is owing to there being unvanquishable difficulty on some principles, as,, there is potential safety hazard in ferroresonance, magnetic saturation, band limiting etc. in the voltage levels operation.And the optical current mutual inductor based on Faraday effect can overcome above problem, therefore be widely applied in electric system.
The Faraday effect optical current mutual inductor optical fiber of its primary side sensing unit in use must be connected with secondary side through insulator.Now, core rod of insulator is necessary for hollow, forms insulator core chamber, so that optical fiber passes through.Usually seal the insulator 2 core cavity sealing structure schematic diagram in existing Faraday effect optical current mutual inductor as shown in Figure 1 penetrate optical fiber in insulator after with colloid.Insulator 2 inner structures shown in Fig. 1 are simple, but must be sealed with colloid after penetrating optical fiber 1 because of insulator 2 core chambeies, and this colloid is solid-filling glue 3, so the airtight quality of colloid has directly determined the security of insulator.For example: if the time there is bubble in the colloid sealing, the electric discharge that high-voltage electric field can be continued bubble, thus cause the carbonization of sealed colloid; Further shorten creepage distance, thus the potential safety hazard of bringing.
For these reasons, another kind of seal form can overcome the appeal shortcoming, does not adopt colloid to fill, but fill mobility/half mobility iknsulating liquid in insulator core chamber.But after being filled with mobility/half mobility iknsulating liquid, sealing often becomes technical barrier, and seepage is also just inevitable.
Summary of the invention
The insulator the present invention is directed in existing current sensor/mutual inductor adopts the colloid sealing to have potential safety hazard, and adopt mobility/half mobility iknsulating liquid to fill the problem of difficult sealing, a kind of novel insulator core cavity sealing device is provided, can solve the sealing of the insulator core chamber internal mobility of wearing optical fiber/half mobility iknsulating liquid, further guarantee the normal operation of electrical network, and there is simple in structure, low processing cost, the advantage such as easy to operate, efficient, safe.The invention still further relates to a kind of current sensor/mutual inductor that adopts above-mentioned insulator core cavity sealing device.
Technical scheme of the present invention is as follows:
A kind of insulator core cavity sealing device, for the insulator core chamber to inserting optical fiber, seal, be filled with mobility or half mobility iknsulating liquid in described insulator core chamber, it is characterized in that, comprise water joint, sleeve pipe, casing drive head and filling material, described water joint docks with the insulator end flange, described sleeve pipe inserts water joint inside and tightens with water joint, the both sides end face of described sleeve pipe all has the hole through optical fiber, be provided with filling material in described sleeve pipe, described filling material is fixed in sleeve pipe by optical fiber and plays sealing function, described casing drive head is arranged on the tail end of sleeve pipe, be provided with the hole through optical fiber on the end face of described casing drive head.
Also comprise O-ring seal, described water joint docks with the insulator end flange seal by O-ring seal.
Described sleeve pipe is half pass-through type structure, has the optic fibre hole with the optical fiber cross-sections match on a side end face of described sleeve pipe, and the opposite side end face of sleeve pipe is penetrating, and described filling material is filled in sleeve pipe by described penetrating face.
The quantity of the optic fibre hole on described sleeve pipe one side end face is identical with the number of fibers of inserting insulator core chamber; Or the size of described optic fibre hole is complementary with the gross section size of the multifiber that inserts insulator core chamber.
The colloid that described filling material is form stable, described filling material is not dissolved in mobility or the half mobility iknsulating liquid in insulator core chamber.
The cross sectional shape of described sleeve pipe is circle, regular polygon or ellipse, tight seal between described sleeve pipe and water joint.
Described casing drive head directly is enclosed within the tail end of sleeve pipe, or the tail end of described casing drive head and sleeve pipe is twisted and to be connect or clamping.
When the tail end of described casing drive head and sleeve pipe, twist while connecing, the end face of described casing drive head is provided with is convenient to twist the structure connect, and described to be convenient to twist the structure connect be flat recess or cross recess; Or the side of described casing drive head is with decorative pattern; Or the side of described casing drive head is provided with and is convenient to twist the plane connect.
Described water joint comprises outside metal part and inner rubber sleeve or nylon jacket, and described water joint, by inner rubber sleeve or nylon jacket and sleeve pipe tight seal, docks with the insulator end flange seal by outside metal part.
A kind of current sensor or current transformer, comprise insulator and optical fiber, described optical fiber inserts insulator core chamber, it is characterized in that, be filled with mobility or half mobility iknsulating liquid in described insulator core chamber, the two ends in described insulator core chamber adopt above-mentioned insulator core cavity sealing device.
Technique effect of the present invention is as follows:
Insulator core cavity sealing device provided by the invention, comprise water joint, sleeve pipe, casing drive head and filling material, water joint docks with the insulator end flange, sleeve pipe inserts water joint inside and tightens with water joint, the equal correspondence of both sides end face of sleeve pipe is provided with the hole through optical fiber, in order to penetrate optical fiber in sleeve pipe, optical fiber penetrates from an end end face of sleeve pipe, from sleeve pipe other end end face, passes; With filling material, optical fiber is fixed in sleeve pipe, filling material plays sealing function simultaneously, sleeve pipe and its inner stuffing can intercept mobility or the half mobility iknsulating liquid of filling in insulator core chamber, the insulator core chamber internal mobility of optical fiber or the sealing problem of half mobility iknsulating liquid are worn in solution, can improve resistance to pressure, thereby improve whole sealing.Tail end installation sleeve pipe cap at sleeve pipe, be provided with the hole through optical fiber on the end face of casing drive head, final optical fiber passes from the end face of casing drive head, and casing drive head prevents that filling material from coming off, and reaches the effect of further sealing.Sleeve pipe integral body is inserted in water joint, and water joint is docked on the flange that fills mobility/half mobility iknsulating liquid insulator end, play sealing function, thereby improve the security of insulator, further guarantee the normal operation of electrical network.Sealing device structure of the present invention is simple, low processing cost, have the advantages such as easy to operate, efficient, safe.
Adopt current sensor or the current transformer (being designated hereinafter simply as current sensor/mutual inductor) of above-mentioned insulator core cavity sealing device, due to what fill in insulator core chamber, be mobility or half mobility iknsulating liquid, and penetrate optical fiber in insulator core chamber after, adopt insulator core cavity sealing device of the present invention to be sealed, can be in the situation that optical fiber be realized the sealing of insulator core chamber through the sealing device, easily produce bubble while having avoided existing current sensor/mutual inductor to adopt solid-filling glue to be filled into insulator core chamber, the electric discharge that can be continued bubble due to high-voltage electric field causes the carbonization of sealed colloid, and shortening creepage distance, bring the problem of potential safety hazard, in insulator core chamber, filling mobility or half mobility iknsulating liquid have been eliminated the insulator potential safety hazard, insulator core cavity sealing device has solved again sealing problem, meet the requirement of insulator sealing property, improve the overall sealing performance of current sensor/mutual inductor, further guarantee the normal operation of electrical network.
O-ring seal is set, makes water joint dock with the insulator end flange seal by the sealing circle, like this, water joint can be realized sealing closely with the insulator end flange, further improves the overall sealing performance of packoff.
Half pass-through type structure of sleeve pipe uniqueness is set, the optic fibre hole of setting and optical fiber cross-sections match on a side end face of sleeve pipe, to guarantee 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.The other end of sleeve pipe is set to penetrating, further to guarantee the loading of filling material.
The colloid that filling material in sleeve pipe is form stable is set, and the filling material adopted is not dissolved in mobility or the half mobility iknsulating liquid in insulator core chamber, even if this is arranged so that mobility or half mobility iknsulating liquid in insulator core chamber enter sleeve pipe by the hole on sleeve pipe, because filling material is not dissolved in mobility or the half mobility iknsulating liquid in this insulator core chamber, therefore mobility or half mobility iknsulating liquid also only can rest on the sleeve pipe oral area, can not enter inside pipe casing, filling material can be isolated it fully and seal, and the colloid that filling material is form stable, further guaranteed the insulator security, improved sealing, for the normal operation of electrical network provides guarantee.
Socket is set between the tail end of casing drive head and sleeve pipe or twists and connect or clamping, by cooperatively interacting and being simple and easy to the structure realized between casing drive head and sleeve pipe, the assurance casing drive head can be combined closely and unlikely coming off with sleeve pipe, also plays the effect that further prevents that filling material from coming off simultaneously.
Water joint is set and comprises outside metal part and inner rubber sleeve or nylon jacket, this waterproof joint structure is simple and easy to machine-shaping, and can so that this water joint can and sleeve pipe between realize sealing closely, and realize sealing closely between water joint and insulator end flange.
The accompanying drawing explanation
Fig. 1 is the insulator core cavity sealing structure schematic diagram in existing current transformer.
The structural representation that Fig. 2 is insulator core cavity sealing device of the present invention.
The preferred structure schematic diagram that Fig. 3 is insulator core cavity sealing device of the present invention.
The use constitutional diagram that Fig. 4 is insulator core cavity sealing device of the present invention.
The partial enlarged drawing that Fig. 5 is Fig. 4.
In figure, each label lists as follows:
1-optical fiber; The 2-insulator; 3-solid-filling glue; 4-mobility or half mobility iknsulating liquid; The 5-packoff; The 6-water joint; The 7-sleeve pipe; The 8-filling material; The 9-casing drive head; The 10-O-ring seal; The 11-rubber sleeve; 12-metal part; The 13-optic fibre hole; Penetrating of 14-.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described.
The present invention relates to a kind of insulator core cavity sealing device, for the insulator core chamber to inserting optical fiber, seal, be filled with mobility or half mobility iknsulating liquid in insulator core chamber, the structure of this insulator core cavity sealing device as shown in Figure 2, sectional view for the axis along insulator, comprise water joint 6, sleeve pipe 7, casing drive head 9 and filling material 8, water joint 6 docks with the insulator end flange, sleeve pipe 7 inserts water joint 6 inside and tightens with water joint 6, the both sides end face of sleeve pipe 7 all has the hole through optical fiber 1, be provided with filling material 8 in sleeve pipe 7, filling material is fixed in sleeve pipe by optical fiber and plays sealing function, casing drive head 9 is arranged on the tail end of sleeve pipe 8, be provided with the hole through optical fiber 1 on the end face of casing drive head 9.
The preferred structure schematic diagram that Fig. 3 is insulator core cavity sealing device of the present invention, insulator core cavity sealing device shown in this embodiment is except comprising shown in Fig. 2 parts, also comprise O-ring seal 10, water joint 6 docks with the insulator end flange seal by O-ring seal 10, to realize the sealing closely of water joint 6 and insulator end flange, improve the overall sealing performance of packoff.Sleeve pipe 7 is preferably half pass-through type structure, has the optic fibre hole 13 with optical fiber 1 cross-sections match on a side end face of sleeve pipe 7, and optic fibre hole 13 guarantees that optical fiber 1 pass smoothly from this end face of sleeve pipe 7.The number that inserts the optical fiber 1 in insulator 2 core chambeies can be according to the practical application adjustment, when optical fiber 1 is many, as more than two or two, the quantity that optic fibre hole 13 on this side end face of sleeve pipe 7 can be set is identical with optical fiber 1 quantity of inserting insulator 2 core chambeies, certainly, an optic fibre hole 13 also can be set and make the size of this optic fibre hole 13 and the gross section size of the multifiber 1 that inserts insulator core chamber be complementary, the quantity of optic fibre hole 13 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 14, and sleeve pipe 7 arranges the tail end that this side of penetrating 14 is sleeve pipe 7, and this penetrating 14 can be that whole end face is penetrating; Or penetrating face in the middle of only arranging, now can be regarded as is middle wide-bore, the aperture of this macropore is much larger than the aperture of the optic fibre hole 13 of other end, be on a side end face of sleeve pipe 7, to be macropore, it on the opposite side end face, is aperture (optic fibre hole), filling material 8 is filled in sleeve pipe 7 by this penetrating 14, and the setting of penetrating 14 can further guarantee the loading of filling material 8.
Filling material 8 in sleeve pipe 7 is preferably the colloid of form stable, as silica gel, or the epoxy glue of epoxy resin and hardening agent etc.Filling material 8 adopts and is not dissolved in mobility or the half mobility iknsulating liquid in insulator core chamber, if while making mobility in insulator core chamber or half mobility iknsulating liquid enter sleeve pipe 7 by the optic fibre hole 13 on sleeve pipe 7, be filled thing 8 isolation, mobility or half mobility iknsulating liquid only can be docked to the port of sleeve pipe 7, have improved sealing property.For ease of installing, filling material 8 is preferably not the stress that is subject to machinery, physics because of outside and comes off, and is not preferably simultaneously and volatilizees in Yin Gaowen, high humidity environment.To sum up, filling material 8 is preferably silica gel, or is the epoxy glue of epoxy resin and hardening agent, also can select the potpourri of atomized ash and hardening agent etc.Wherein, silica gel is not volatile and have splendid stability and a tack in high temperature, high humidity environment; Epoxy resin is epoxy resin to be mixed to the epoxy glue of formation according to certain ratio with hardening agent with the epoxy glue of hardening agent, high, form stable, high-and low-temperature resistance of physical strength and be insoluble to the liquid such as strong acid, highly basic after its curing molding; Atomized ash is atomized ash and hardening agent to be mixed according to a certain percentage to the potpourri of rear formation with the potpourri of hardening agent, has that form stable, tack are good, physical strength is high after curing molding, application of temperature is consistent with environment temperature, the characteristic such as not soluble.The characteristics such as it is nontoxic, tasteless that the described filling material 8 of the embodiment of the present invention has simultaneously (can under any environment temperature, reach indoor and outdoor is filled) with low cost, easy to operate.
The shape of sleeve pipe 7 is not defined as the shape shown in Fig. 3, xsect can be circle, regular polygon or ellipse etc., any shape that sleeve pipe 7 adopts all needs to guarantee water joint 6 clamp sleeve 7 closely, makes tight seal between sleeve pipe 7 and water joint 6.
The use constitutional diagram of insulator core cavity sealing device of the present invention as shown in Figure 4, the partial enlarged drawing that Fig. 5 is its A view.As seen from Figure 4, optical fiber 1 penetrates in insulator 2 core chambeies, be filled with mobility or half mobility iknsulating liquid 4 in insulator 2 core chambeies, Fig. 4 is the sectional view along the axis of insulator, can see that at the two ends of the direction that parallels to the axis, insulator 2 insulator core cavity sealing device 5(of the present invention is hereinafter to be referred as packoff 5), packoff 5 is arranged on the end flange of insulator 2 both sides, specifically with insulator 2 end flange, dock by water joint 6, the concrete form of docking can be clamping or stubborn connect etc.It is the enlarged drawing of packoff 5 that Fig. 5 can be understood as, and packoff 5 is by being arranged on the peripheral of water joint 6 and realizing and insulator end flange tight seal at water joint 6 and the O-ring seal 10 of insulator end flange joint.
The concrete installation steps of insulator core cavity sealing device of the present invention are, the optic fibre hole 13 of the first side end face from sleeve pipe 7 penetrates optical fiber 1, and pass optical fiber 1 from penetrating 14 of the opposite side end face of sleeve pipe 7, from the opposite side end face of sleeve pipe 7 penetrating 14 pours into filling material 8 to sleeve pipe 7 afterwards, filling material 8 can be that classes such as silica gel have the comparatively colloid of stable form, be not dissolved in insulator core chamber internal mobility or half mobility iknsulating liquid, the stress that because of outside, is not subject to machinery, physics comes off, and in Yin Gaowen, high humidity environment, does not volatilize.By the time filling material 8 is inserted into sleeve pipe 7 in water joint 6 together with optical fiber 1 after the interior solidified forming of sleeve pipe 7, by the nut that screws water joint 6 tail ends, sleeve pipe 7 is stuck in water joint 6 closely, and water joint 6 is twisted and is connected on insulator 2 end flange.Again by optical fiber 1 through casing drive head 9, then by casing drive head 9 by direct socket or clamping or twist and the process Installation such as connect on sleeve pipe 7, increase the crushing resistance of insulator core cavity sealing device of the present invention, thus the raising sealing.Completed the installation of insulator core cavity sealing device of the present invention through above-mentioned steps.
Certainly, the order of above-mentioned installation steps is also not exclusive, also can change, after in the sleeve pipe 7 by insulator core cavity sealing device of the present invention, penetrating optical fiber 1, pour into filling material 8 in sleeve pipe 7, with filling material 8, optical fiber 1 is fixed in sleeve pipe 7, filling material 8 plays sealing function simultaneously, filling material is loaded onto casing drive head 9 at the tail end of sleeve pipe 7 after filling sealing, improve resistance to pressure, thereby improve whole sealing, then sleeve pipe 7 integral body are inserted in water joint 6, finally water joint 6 is twisted and is connected on insulator 2 end flange.The installation of whole insulator core cavity sealing device, solved the insulator core chamber internal mobility of wearing optical fiber 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 can be with reference to figure 4, Fig. 5 is partial enlarged drawing, current sensor/mutual inductor comprises insulator 2 and optical fiber 1, optical fiber 1 inserts insulator 2 core chambeies, be filled with mobility or half mobility iknsulating liquid 4 in insulator 2 core chambeies, the two ends in insulator 2 core chambeies adopt the above-mentioned insulator core cavity sealing device 5 of the present invention.In current sensor of the present invention or current transformer, due to what fill in insulator 1 core chamber, be mobility or half mobility iknsulating liquid 4, as adopt the insulation wet goods, avoided prior art to adopt solid-filling glue to cause causing due to bubble the carbonization of sealed colloid, shorten creepage distance, bring the problem of potential safety hazard, in insulator 2 core chambeies, filling mobility or half mobility iknsulating liquid have been eliminated the insulator potential safety hazard, both side ends flange in insulator core chamber adopts packoff 5 of the present invention, under the prerequisite that can pass at optical fiber 1, can be practical, effectively solve the insulator sealing problem that fills mobility or half mobility iknsulating liquid, guaranteed insulator core chamber sealing property, and then improved the overall sealing performance of current sensor/mutual inductor, further guarantee the normal operation of electrical network.
It should be pointed out that the above embodiment can make the invention of those skilled in the art's comprehend, but do not limit the present invention in any way creation.Therefore; although this instructions has been described in detail the invention with reference to drawings and Examples; but; those skilled in the art are to be understood that; still can modify or be equal to replacement the invention; in a word, all do not break away from technical scheme and the improvement thereof of the spirit and scope of the invention, and it all should be encompassed in the middle of the protection domain of the invention patent.
Claims (10)
1. an insulator core cavity sealing device, for the insulator core chamber to inserting optical fiber, seal, be filled with mobility or half mobility iknsulating liquid in described insulator core chamber, it is characterized in that, comprise water joint, sleeve pipe, casing drive head and filling material, described water joint docks with the insulator end flange, described sleeve pipe inserts water joint inside and tightens with water joint, the both sides end face of described sleeve pipe all has the hole through optical fiber, be provided with filling material in described sleeve pipe, described filling material is fixed in sleeve pipe by optical fiber and plays sealing function, described casing drive head is arranged on the tail end of sleeve pipe, be provided with the hole through optical fiber on the end face of described casing drive head.
2. insulator core cavity sealing device according to claim 1, is characterized in that, also comprises O-ring seal, and described water joint docks with the insulator end flange seal by O-ring seal.
3. insulator core cavity sealing device according to claim 1 and 2, it is characterized in that, described sleeve pipe is half pass-through type structure, there is the optic fibre hole with the optical fiber cross-sections match on one side end face of described sleeve pipe, the opposite side end face of sleeve pipe is penetrating, and described filling material is filled in sleeve pipe by described penetrating face.
4. insulator core cavity sealing device according to claim 3, is characterized in that, the quantity of the optic fibre hole on described sleeve pipe one side end face is identical with the number of fibers of inserting insulator core chamber; Or the size of described optic fibre hole is complementary with the gross section size of the multifiber that inserts insulator core chamber.
5. insulator core cavity sealing device according to claim 1, is characterized in that, the colloid that described filling material is form stable, and described filling material is not dissolved in mobility or the half mobility iknsulating liquid in insulator core chamber.
6. insulator core cavity sealing device according to claim 3, is characterized in that, the cross sectional shape of described sleeve pipe is circle, regular polygon or ellipse, tight seal between described sleeve pipe and water joint.
7. insulator core cavity sealing device according to claim 1, is characterized in that, described casing drive head directly is enclosed within the tail end of sleeve pipe, or the tail end of described casing drive head and sleeve pipe is twisted and to be connect or clamping.
8. insulator core cavity sealing device according to claim 7, is characterized in that, when the tail end of described casing drive head and sleeve pipe, twists while connecing, and the end face of described casing drive head is provided with is convenient to twist the structure connect, and described to be convenient to twist the structure connect be flat recess or cross recess; Or the side of described casing drive head is with decorative pattern; Or the side of described casing drive head is provided with and is convenient to twist the plane connect.
9. insulator core cavity sealing device according to claim 1, it is characterized in that, described water joint comprises outside metal part and inner rubber sleeve or nylon jacket, described water joint, by inner rubber sleeve or nylon jacket and sleeve pipe tight seal, docks with the insulator end flange seal by outside metal part.
10. a current sensor or current transformer, comprise insulator and optical fiber, described optical fiber inserts insulator core chamber, it is characterized in that, be filled with mobility or half mobility iknsulating liquid in described insulator core chamber, the two ends in described insulator core chamber adopt one of claim 1 to 9 described insulator core cavity sealing device.
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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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| 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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| CN104237596A (en) * | 2014-08-27 | 2014-12-24 | 易能乾元（北京）电力科技有限公司 | Collecting device with optical fiber protecting function, full-optical-fiber current transformer and mounting method |
| 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 |
| CN116449070A (en) * | 2023-06-16 | 2023-07-18 | 常州博瑞电力自动化设备有限公司 | Optical transformer |
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| 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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Effective date of registration: 20200904 Address after: 239000 Standardized Workshop No. 2 Quanzhou Road, Modern Industrial Park, Suchu, Chuzhou, Anhui Province Patentee after: Anhui New Electric Co.,Ltd. Address before: 100093 Beijing City, Changping District small town Jin Yanlong Research Building 2 layer Patentee before: ENERXY QIANYUAN (BEIJING) ELECTRIC POWER TECHNOLOGY Co.,Ltd. |
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