CN112820484A - Optical fiber composite insulator - Google Patents
Optical fiber composite insulator Download PDFInfo
- Publication number
- CN112820484A CN112820484A CN201911122040.2A CN201911122040A CN112820484A CN 112820484 A CN112820484 A CN 112820484A CN 201911122040 A CN201911122040 A CN 201911122040A CN 112820484 A CN112820484 A CN 112820484A
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- optical fiber
- sealing
- glue
- section
- composite insulator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/04—Chains; Multiple chains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
Abstract
The invention relates to an optical fiber composite insulator. The optical fiber composite insulator comprises optical fibers and an insulating core body, wherein the insulating core body is axially provided with a cavity for the optical fibers to pass through, and flange assemblies are arranged at two ends of the insulating core body; the flange assembly is provided with an optical fiber channel, the optical fiber channel comprises a sealing section and a glue passing section, the flange assembly is also provided with a glue injection channel, and the glue injection channel is communicated with the glue passing section; the flange assembly further comprises a plugging piece, and the plugging piece is used for plugging the glue injection channel. The flange components are arranged at two ends of the insulating core body, the glue injection channel is arranged on each flange component, in the manufacturing process of the optical fiber composite insulator, the sealing section is sealed through a sealing material firstly, then glue injection operation is carried out, in the glue injection operation, glue injection is carried out through the glue injection channel located at the lower portion, the form of air exhaust of the glue injection channel located at the upper portion is adopted, the glue injection operation is easy to achieve, glue liquid is not prone to generate bubbles in the glue injection process in the glue injection operation, and reliable fixation of optical fibers in a cavity of the insulating core body is guaranteed.
Description
Technical Field
The invention relates to an optical fiber composite insulator.
Background
The optical fiber composite insulator is suitable for extra-high voltage direct current transmission engineering, and transmits an optical signal from the high-voltage end sensing ring to the low-voltage end signal acquisition unit through the optical fiber composite insulator. The optical fiber composite insulator comprises an insulator core body and optical fibers, wherein an axial through cavity is formed in the insulator core body, and the optical fibers penetrate through the cavity in the insulator core body. The optical fiber composite insulator further comprises an umbrella skirt covering the peripheral surface of the insulator core body, a hardware fitting flange is arranged at the end part of the insulator core body, a sealing element is arranged on the hardware fitting flange, a through hole is formed in the sealing element, and the optical fiber penetrates through the through hole to be connected with a corresponding high-voltage end sensing ring or a corresponding low-voltage end signal acquisition unit.
In order for the optical fiber to pass through the perforation, a gap is required between the optical fiber and the inner wall of the perforation. After the optical fiber passes through the through hole, the through hole needs to be sealed in order to prevent the inside of the optical fiber composite insulator from being corroded by external impurities. The utility model discloses an authorized announcement number is CN201397709Y, and the authorized announcement day is 2010, 2 months and 3 days, is equipped with the holding tank on this software insulated fiber insulator's the sealing member, perforates and sets up on the cell bottom wall of holding tank, is provided with sealed glue in the holding tank, realizes fenestrate sealed through sealed glue and the cooperation of optic fibre. The sealing element is provided with a glue injection hole along the axial direction, after the sealing of the sealant on the through hole is completed, glue is injected into the cavity in the insulator core through the glue injection hole, and therefore the optical fiber in the cavity is fixed through the glue.
However, the glue injection hole not only has the function of injecting glue into the cavity, but also is used for discharging gas in the cavity outwards, so that the glue injection operation is inconvenient, and glue is injected from the upper part of the cavity, and air is possibly wrapped by the glue solution during glue injection, so that bubbles exist in the glue solution, and the fixation of the optical fiber in the cavity is influenced.
Disclosure of Invention
The invention aims to provide an optical fiber composite insulator, which is used for solving the problems that the glue injection of the existing optical fiber composite insulator is difficult, and the fixation of an optical fiber is influenced by the existence of bubbles in glue solution.
In order to achieve the purpose, the technical scheme of the optical fiber composite insulator is as follows: an optical fiber composite insulator comprising
An optical fiber for signal transmission;
the insulating core body is axially provided with a cavity in a penetrating way, and the optical fiber is arranged in the cavity in a penetrating way;
the flange assemblies are arranged at two ends of the insulating core body;
the flange assembly is provided with an optical fiber channel, and the optical fiber channel corresponds to the cavity on the insulating core body so as to allow a corresponding optical fiber to pass through;
the optical fiber channel comprises a sealing section and a glue passing section, and the glue passing section is communicated with the cavity on the insulating core body;
the sealing section is far away from the insulating core body and is used for filling sealing materials, and the sealing materials are matched with the optical fibers to seal the corresponding sealing section;
the flange assembly is also provided with a glue injection channel, and the glue injection channel is communicated with the glue passing section;
the flange assembly further comprises a plugging piece, and the plugging piece is used for plugging the glue injection channel.
The optical fiber composite insulator has the beneficial effects that: the flange assemblies are arranged at two ends of the insulating core body, each flange assembly is provided with an adhesive injection channel, in the manufacturing process of the optical fiber composite insulator, a sealing section is sealed through a sealing material firstly, then the adhesive injection operation is carried out, in the adhesive injection operation, one of the adhesive injection channels injects the adhesive, the other adhesive injection channel discharges the gas in the insulating core body outwards, the adhesive injection operation is easy to realize, when the adhesive is injected, the adhesive injection channel positioned at the lower part can be used for injecting the adhesive, and the adhesive injection channel positioned at the upper part is used for exhausting, so that in the adhesive injection process, the adhesive is not easy to generate bubbles, and the optical fibers in the cavity of the insulating core body are ensured to be reliably fixed.
Further, the flange assembly comprises a hardware fitting flange and a sealing element, and the sealing element is fixed on the hardware fitting flange through a fastening element;
the sealing section is arranged on the sealing element, and the glue passing section is arranged on the hardware fitting flange.
The beneficial effect is that it is convenient to process and manufacture.
Furthermore, the hardware fitting flange is provided with a containing hole;
the seal includes a projection;
the receiving hole is used for receiving the projection of the sealing element;
the sealing section is arranged corresponding to the protruding part, and the glue passing section and the accommodating hole form a step hole.
The sealing structure has the beneficial effects that the area of the sealing section is increased, and the sealing effect is ensured.
Furthermore, the outer peripheral surface of the protruding part is provided with an external thread, and the hole wall of the accommodating hole is provided with an internal thread;
the external thread of the bulge is matched with the internal thread on the hole wall of the accommodating hole.
The metal fitting flange has the beneficial effects that the connection strength and the sealing property of the sealing element and the metal fitting flange are improved.
Further, the injecting glue passageway has the step face, the shutoff piece is sealed the pad, sealed pad be used for with the step face cooperation of injecting glue passageway in order to realize the shutoff to the injecting glue passageway.
The sealing gasket has the advantage of facilitating the assembly of the sealing gasket.
Further, the device also comprises a propping stud;
the glue injection channel comprises a large-diameter section and a small-diameter section, and the small-diameter section is positioned between the large-diameter section and the glue passing section;
the step surface is positioned between the large-diameter section and the small-diameter section;
the inner wall of the large-diameter section is provided with internal threads;
the abutting stud is used for being in threaded connection with the large-diameter section;
and the jacking stud is used for pressing the sealing gasket on the step surface.
The sealing gasket has the beneficial effects that the sealing gasket is propped against the step surface through a mechanical structure, so that the sealing effect of the sealing gasket is ensured.
Furthermore, the part of the large-diameter section, which is positioned on the outer side of the abutting stud, is provided with a sealant, and the sealant is used for fixing the abutting stud in the large-diameter section.
The anti-loosening screw bolt has the beneficial effects that the screw bolt is prevented from being propped to loosen in the use process of the optical fiber composite insulator, and the sealing performance is improved.
Further, a sealing ring is arranged between the hardware fitting flange and the sealing element.
The optical fiber composite insulator has the beneficial effects that impurities are prevented from entering the optical fiber composite insulator from the gap between the sealing element and the hardware fitting flange.
Further, be equipped with the sealing washer holding tank on the top surface of gold utensil flange, the sealing washer sets up in the sealing washer holding tank.
The sealing ring has the beneficial effect that the sealing ring is convenient to mount.
Further, the glue injection channel is arranged along the radial direction of the hardware fitting flange.
The processing method has the advantage of convenience in processing.
Drawings
Fig. 1 is a sectional view of an optical fiber composite insulator according to embodiment 1 of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
fig. 4 is a schematic structural view of the hardware flange in fig. 1;
in the figure: 1. the optical fiber, 2, sealing member, 21, bulge, 3, gold utensil flange, 31, flange hole, 32, slot, 33, accommodation hole, 34, injecting glue passageway, 341, path section, 342, path section, 4, insulating core, 5, isolation sleeve, 6, threaded fastener, 7, O shape sealing washer, 8, optical fiber passageway, 81, sealing section, 82, cross gluey section, 9, sealed glue, 10, sealed pad, 11, top support double-screw bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the application, i.e., the embodiments described are only a subset of, and not all embodiments of the application. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present application are described in further detail below with reference to examples.
The optical fiber composite insulator of the present application includes: as shown in fig. 1, the optical fiber composite insulator includes an optical fiber 1, an insulating core 4 and an isolation sleeve 5, the optical fiber 1 is used for signal transmission, and the number of the optical fibers 1 can be adjusted according to actual use requirements. The insulating core 4 is axially provided with a cavity for the optical fiber 1 to pass through. The isolation sleeve 5 covers the outer peripheral surface of the insulation core 4 to protect the insulation core 4, and umbrella skirts are arranged on the isolation sleeve 5 at equal intervals. The axial length of the distance sleeve 5 is slightly smaller than the axial length of the insulating core 4 so that both ends of the insulating core 4 protrude out of the distance sleeve 5.
As shown in fig. 3 and 4, the composite insulator further includes flange assemblies disposed at both ends of the insulating core 4. The flange assembly comprises a hardware fitting flange 3 and a sealing element 2, and the sealing element 2 is fixed on the hardware fitting flange 3 through a threaded fastener 6; the fitting flange 3 is provided with a slot 32 for inserting the part of the corresponding end of the insulating core 4 protruding out of the isolation sleeve 5, and the fitting flange 3 is further provided with a flange hole 31.
The seal 2 comprises a projection 21; the hardware fitting flange 3 is provided with a containing hole 33 for containing the convex part 21, the outer peripheral surface of the convex part 21 is provided with external threads, and the hole wall of the containing hole 33 is provided with internal threads; the male screw of the projection 21 is connected with the female screw on the hole wall of the receiving hole 33 to screw the seal member 2 with the fitting flange 3. Be equipped with the sealing washer holding tank on the top surface of gold utensil flange 3, be equipped with O shape sealing washer 7 in the sealing washer holding tank, O shape sealing washer 7 is used for guaranteeing the sealed between gold utensil flange 3 and the sealing member 2, avoids external impurity to enter into composite insulator's inside to cause the influence to optical fiber composite insulator's function.
As shown in fig. 3, the flange assembly is provided with a fiber channel 8, and the fiber channel 8 corresponds to the cavity on the insulating core 4 for passing the corresponding optical fiber 1. The optical fiber channel 8 comprises a glue passing section 82 arranged on the hardware fitting flange 3 and a sealing section 81 arranged on the sealing element 2, wherein the sealing section 81 is arranged corresponding to the protruding part 21 of the sealing element 2, the glue passing section 82 is arranged corresponding to the accommodating hole 33, and the accommodating hole 33 and the glue passing section 82 form a step hole. The sealing section 81 is used for filling a sealant, the sealant is matched with the optical fiber 1 to seal the corresponding sealing section 81, and the adhesive passing section 82 is located between the sealing section 81 and the insulating core body 4 and is communicated with the cavity on the insulating core body 4.
As shown in fig. 2, the hardware flange 3 is radially provided with a glue injection channel 34 communicated with the glue passing section 82; glue is injected into the cavity of the insulating core 4 through the glue injection channel 34 and the glue passing section 82 to fix the optical fiber 1 in the cavity of the insulating core 4. The glue injection channel 34 comprises a large-diameter section 342 and a small-diameter section 341, the small-diameter section 341 is located between the large-diameter section 342 and the glue passing section 82, a step surface is formed between the large-diameter section 342 and the small-diameter section 341, and an internal thread is machined on the inner wall surface of the large-diameter section 342.
The optical fiber composite insulator further comprises a sealing gasket 10, wherein the sealing gasket 10 is used for plugging the glue injection channel 34 after glue injection is completed, and the specific plugging form is as follows: the sealing gasket 10 is matched with a stepped surface in the glue injection channel 34 in a surface-to-surface mode so as to seal the glue injection channel 34, and the sealing gasket 10 forms a plugging piece. The large-diameter section 342 is internally in threaded connection with a propping stud 11, the propping stud 11 is used for pressing the sealing gasket 10 on the step surface, and after the propping stud 11 is installed in place, the sealing glue 9 is injected into the part of the large-diameter section 342, which is positioned on the outer side of the propping stud 11, so as to further ensure the sealing effect of the glue injection channel 34 and prevent the propping stud 11 from being separated from the large-diameter section 342.
The application discloses optical fiber composite insulator's assembly process: first, the optical fiber 1 is passed through the insulating core 4 and the two flange assemblies. Secondly, the sealing sections 81 are sealed by using high-viscosity sealant (when sealing is performed, the sealant can be injected into one of the sealing sections 81 firstly, the optical fiber composite insulator is turned over after the glue injection is completed to enable the sealing section 81 to be located below the glue passing section 82, if the sealant flows in the curing process, the sealant flows out of the optical fiber channel 8, the sealant is prevented from flowing into the glue passing section 82 to affect the injection of the sealant into the cavity of the insulating core body 4, and the other sealing section 81 is sealed in the same mode after the sealant is cured). Thirdly, injecting glue into the cavity of the insulating core 4 through the glue injection channel 34 after the two sealing sections 81 are sealed (inclining the composite insulator by a certain angle, slowly injecting the insulating glue from the glue injection channel 34 at the lower position through the sealing and pressurizing device, discharging the air from the glue injection channel 34 at the higher position until the insulating glue completely fills the cavity in the hollow insulator, observing the insulating glue flowing out from the glue injection channel 34 at the higher position, and stopping injecting the glue when no bubble exists in the insulating glue.) fourthly, waiting for the curing of the insulating glue, taking out the pressurizing and sealing device, and cleaning the large-diameter section 342 of the glue injection channel 34. Fifth, the packing 10 is installed, and the abutting stud 11 is installed to abut the packing 10 against the step surface of the glue injection passage 34 by abutting the stud 11. Sixthly, horizontally placing the optical fiber composite insulator, enabling the glue injection channel 34 to face upwards, injecting the sealant 9 into the large-diameter section 342 of the glue injection channel 34, and completing the assembly of the optical fiber composite insulator after the sealant 9 is cured.
The optical fiber composite insulator of the present invention in embodiment 10 differs from embodiment 1 only in that: the extending direction of the glue injection channel is set according to actual use conditions, and the glue injection channel can be perpendicular to the axial direction of the hardware fitting flange.
The above description is only a preferred embodiment of the present application, and not intended to limit the present application, the scope of the present application is defined by the appended claims, and all changes in equivalent structure made by using the contents of the specification and the drawings of the present application should be considered as being included in the scope of the present application.
Claims (10)
1. An optical fiber composite insulator comprising
An optical fiber for signal transmission;
the insulating core body is axially provided with a cavity in a penetrating way, and the optical fiber is arranged in the cavity in a penetrating way;
the flange assemblies are arranged at two ends of the insulating core body;
the method is characterized in that: the flange assembly is provided with an optical fiber channel, and the optical fiber channel corresponds to the cavity on the insulating core body so as to allow a corresponding optical fiber to pass through;
the optical fiber channel comprises a sealing section and a glue passing section, and the glue passing section is communicated with the cavity on the insulating core body;
the sealing section is far away from the insulating core body and is used for filling sealing materials, and the sealing materials are matched with the optical fibers to seal the corresponding sealing section;
the flange assembly is also provided with a glue injection channel, and the glue injection channel is communicated with the glue passing section;
the flange assembly further comprises a plugging piece, and the plugging piece is used for plugging the glue injection channel.
2. The optical fiber composite insulator according to claim 1, wherein: the flange assembly comprises a hardware fitting flange and a sealing element, and the sealing element is fixed on the hardware fitting flange through a fastening piece;
the sealing section is arranged on the sealing element, and the glue passing section is arranged on the hardware fitting flange.
3. The optical fiber composite insulator according to claim 2, wherein: the hardware fitting flange is provided with a containing hole;
the seal includes a projection;
the receiving hole is used for receiving the projection of the sealing element;
the sealing section is arranged corresponding to the protruding part, and the glue passing section and the accommodating hole form a step hole.
4. The optical fiber composite insulator according to claim 3, wherein: the outer peripheral surface of the protruding part is provided with an external thread, and the hole wall of the accommodating hole is provided with an internal thread;
the external thread of the bulge is matched with the internal thread on the hole wall of the accommodating hole.
5. The fiber composite insulator of claim 1, 2, 3 or 4, wherein: the injecting glue passageway has the step face, the shutoff piece is sealed the pad, sealed pad be used for with the step face cooperation of injecting glue passageway in order to realize the shutoff to the injecting glue passageway.
6. The optical fiber composite insulator according to claim 5, wherein: the device also comprises a propping stud;
the glue injection channel comprises a large-diameter section and a small-diameter section, and the small-diameter section is positioned between the large-diameter section and the glue passing section;
the step surface is positioned between the large-diameter section and the small-diameter section;
the inner wall of the large-diameter section is provided with internal threads;
the abutting stud is used for being in threaded connection with the large-diameter section;
and the jacking stud is used for pressing the sealing gasket on the step surface.
7. The optical fiber composite insulator according to claim 6, wherein: and the part of the large-diameter section, which is positioned on the outer side of the abutting stud, is provided with a sealant, and the sealant is used for fixing the abutting stud in the large-diameter section.
8. The fiber composite insulator of claim 2, 3 or 4, wherein: and a sealing ring is arranged between the hardware fitting flange and the sealing element.
9. The optical fiber composite insulator according to claim 8, wherein: be equipped with the sealing washer holding tank on the top surface of gold utensil flange, the sealing washer sets up in the sealing washer holding tank.
10. The fiber composite insulator of claim 2, 3 or 4, wherein: the glue injection channel is arranged along the radial direction of the hardware fitting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122040.2A CN112820484B (en) | 2019-11-15 | 2019-11-15 | Optical fiber composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122040.2A CN112820484B (en) | 2019-11-15 | 2019-11-15 | Optical fiber composite insulator |
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| Publication Number | Publication Date |
|---|---|
| CN112820484A true CN112820484A (en) | 2021-05-18 |
| CN112820484B CN112820484B (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911122040.2A Active CN112820484B (en) | 2019-11-15 | 2019-11-15 | Optical fiber composite insulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115359976A (en) * | 2022-08-10 | 2022-11-18 | 常州博瑞电力自动化设备有限公司 | Thermal expansion compensation optical fiber insulator and use method thereof |
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| US4610033A (en) * | 1984-12-14 | 1986-09-02 | Harvey Hubbell Incorporated | Insulator with fiber optic communication channel |
| CN2582013Y (en) * | 2002-11-20 | 2003-10-22 | 顺德特种变压器厂 | Hanging optical fibre composite isolator |
| CN101252034A (en) * | 2008-04-03 | 2008-08-27 | 醴陵泓嘉机械实业有限公司 | Column support type hollow combined insulator and production process thereof |
| CN101587214A (en) * | 2009-06-25 | 2009-11-25 | 哈尔滨工业大学 | Soft insulating optical fiber insulator |
| CN201397709Y (en) * | 2009-06-25 | 2010-02-03 | 哈尔滨工业大学 | Insulator of soft insulated optical fiber |
| CN205177511U (en) * | 2015-11-25 | 2016-04-20 | 襄阳国网合成绝缘子有限责任公司 | Self sealss optic fibre composite insulator |
| CN108154980A (en) * | 2017-04-06 | 2018-06-12 | 许继电气股份有限公司 | A kind of folding column attachment device and segmented insulator, current transformer |
| CN207834029U (en) * | 2017-12-27 | 2018-09-07 | 南京电气高压套管有限公司 | A kind of hollow composite insulator flange mucilage binding glue injection structure |
| CN108843268A (en) * | 2018-09-17 | 2018-11-20 | 克拉玛依胜利高原机械有限公司 | Replaceable polished rod packing kit for thermal recovery |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4610033A (en) * | 1984-12-14 | 1986-09-02 | Harvey Hubbell Incorporated | Insulator with fiber optic communication channel |
| CN2582013Y (en) * | 2002-11-20 | 2003-10-22 | 顺德特种变压器厂 | Hanging optical fibre composite isolator |
| CN101252034A (en) * | 2008-04-03 | 2008-08-27 | 醴陵泓嘉机械实业有限公司 | Column support type hollow combined insulator and production process thereof |
| CN101587214A (en) * | 2009-06-25 | 2009-11-25 | 哈尔滨工业大学 | Soft insulating optical fiber insulator |
| CN201397709Y (en) * | 2009-06-25 | 2010-02-03 | 哈尔滨工业大学 | Insulator of soft insulated optical fiber |
| CN205177511U (en) * | 2015-11-25 | 2016-04-20 | 襄阳国网合成绝缘子有限责任公司 | Self sealss optic fibre composite insulator |
| CN108154980A (en) * | 2017-04-06 | 2018-06-12 | 许继电气股份有限公司 | A kind of folding column attachment device and segmented insulator, current transformer |
| CN207834029U (en) * | 2017-12-27 | 2018-09-07 | 南京电气高压套管有限公司 | A kind of hollow composite insulator flange mucilage binding glue injection structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115359976A (en) * | 2022-08-10 | 2022-11-18 | 常州博瑞电力自动化设备有限公司 | Thermal expansion compensation optical fiber insulator and use method thereof |
| CN115359976B (en) * | 2022-08-10 | 2023-06-23 | 常州博瑞电力自动化设备有限公司 | Thermal expansion compensation optical fiber insulator and use method thereof |
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| CN112820484B (en) | 2022-07-15 |
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Effective date of registration: 20230821 Address after: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee after: XJ Group Corp. Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: XJ ELECTRIC Co.,Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: XJ Group Corp. Patentee before: STATE GRID CORPORATION OF CHINA |