CN111969548B - Cable joint protection component structure - Google Patents
Cable joint protection component structure Download PDFInfo
- Publication number
- CN111969548B CN111969548B CN202010854372.6A CN202010854372A CN111969548B CN 111969548 B CN111969548 B CN 111969548B CN 202010854372 A CN202010854372 A CN 202010854372A CN 111969548 B CN111969548 B CN 111969548B
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- sealing
- sleeve
- annular
- connecting sleeve
- groove
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0437—Channels
- H02G3/045—Channels provided with perforations or slots permitting introduction or exit of wires
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cable Accessories (AREA)
Abstract
The invention relates to the technical field of electric power engineering, and discloses a cable joint protection assembly structure which comprises a connecting sleeve, wherein a clamping sleeve is arranged in the middle of the connecting sleeve, the clamping sleeve is made of an insulating elastic material, a positioning convex ring is arranged at the center of the outer side of the clamping sleeve, and an annular positioning groove matched with the positioning convex ring is arranged at the center of the connecting sleeve; two ends of an inner hole of the clamping sleeve are symmetrically provided with sealing conical surfaces, each sealing conical surface is provided with an annular sealing groove, and a double-lip sealing ring is arranged in each annular sealing groove; the two ends of the connecting sleeve are respectively provided with an end cover, the inner end surface of each end cover extends along the axial direction to form a supporting sleeve, the inner end inner wall of each supporting sleeve is provided with a supporting conical surface, the inner wall of the outer end of each end cover is provided with a sealing check ring, the inner wall of each sealing check ring is provided with an end cover sealing groove, and an end cover sealing ring is arranged in each end cover sealing groove. The invention sequentially passes through the end cover sealing ring, the double-lip sealing ring and the central sealing ring from outside to inside, and the sealing effect at the cable joint is very good.
Description
Technical Field
The invention relates to the technical field of power engineering, in particular to a cable joint protection assembly structure.
Background
The cable protection sleeve and the cable protection tube are protection tubes which are sleeved outside the cable and have certain mechanical strength and are used for preventing the cable from being damaged. In electrical engineering, the cable is laid in the channel, when needing to lead the cable to wire pole, distribution equipment, need dock the cable, and the cable generally contains sinle silk, outer tube, and behind the cable sinle silk butt joint, it is direct outside cover a polyethylene cable sheath at present all to protect the overlap joint. However, the outer sleeve at the cable joint is broken, so that the sealing performance at the cable joint is reduced, the bending resistance and the tensile resistance at the cable joint are also obviously reduced, the strength of the common polyethylene cable sheath is low, the protection performance is very limited, the requirements on the tensile resistance and the bending resistance at the cable joint cannot be ensured, the common polyethylene cable sheath cannot adapt to the external severe environment, and even if the cable is laid in a good surrounding environment, an additional rigid protection pipe must be arranged outside the cable to realize the good protection of the cable.
Disclosure of Invention
The invention provides a cable joint protection assembly structure which is good in sealing performance, stable in performance and capable of improving stability of a cable joint in order to solve the problems of a cable sheath at the cable joint in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cable joint protection assembly structure comprises a connecting sleeve, wherein a clamping sleeve is arranged in the middle of the connecting sleeve and is made of an insulating elastic material, a positioning convex ring is arranged at the center of the outer side of the clamping sleeve, and an annular positioning groove matched with the positioning convex ring is arranged at the center of the connecting sleeve; two ends of an inner hole of the clamping sleeve are symmetrically provided with sealing conical surfaces with large outer parts and small inner parts, an annular sealing groove is arranged on each sealing conical surface, a double-lip sealing ring is arranged in each annular sealing groove, and an annular gap is formed between the outer walls of the two ends of the clamping sleeve and the inner wall of the connecting sleeve; end covers are arranged at two ends of the connecting sleeve and are in threaded connection with the connecting sleeve, the inner end face of each end cover extends in the axial direction to form a supporting sleeve, a supporting conical surface is arranged on the inner wall of the inner end of each supporting sleeve, a sealing check ring is arranged on the inner wall of the outer end of each end cover, an end cover sealing groove is formed in the inner wall of each sealing check ring, and an end cover sealing ring is arranged in each end cover sealing groove; when the end cover is in threaded connection with the connecting sleeve, the supporting conical surface is abutted against the outer end of the clamping sleeve.
Before two cables need to be in butt joint connection, the clamping sleeve and the connecting sleeve are assembled together, one of the cables sequentially penetrates through the end cover, the connecting sleeve and the end cover, then the two cables are in butt joint connection, the connecting sleeve is moved to enable the middle position of the connecting sleeve to be just positioned at the joint of the two cables, the cable joint is positioned between the two double-lip sealing rings at the moment, finally the end cover and the connecting sleeve are screwed down, in the process of screwing down the end cover, the supporting conical surfaces of the supporting sleeves on the end cover abut against the two ends of the clamping sleeve, the outer sides of the two ends of the clamping sleeve shrink to hold the cables due to the elasticity of the clamping sleeve, the double-lip sealing rings on the sealing conical surfaces isolate and seal the cable joints, and the end cover sealing rings in the end cover also play a role in sealing, so that external moisture, silt and the like are prevented from entering the connecting sleeve; the clamping sleeve has an elastic reaction force to the supporting sleeve when being compressed and contracted, and the elastic reaction force enables the end cover to have a pretightening force, so that the end cover can be prevented from loosening; the cable joint department is connected, sealed through this kind of protection component, even cable joint department takes place to buckle and also can not lead to the disconnection, and the performance is very stable.
Preferably, the outer sides of the two ends of the clamping sleeve extend to form supporting convex rings, the cross sections of the supporting convex rings are circular, and the supporting convex rings and the clamping sleeve are of an integrated structure. Support the stability that the bulge loop increased the centre gripping cover on the one hand, when on the other hand supported the conical surface and supported the bulge loop butt, the centre gripping cover both ends atress was more stable.
Preferably, two annular convex teeth are arranged on the part, located on the outer side of the annular sealing groove, of each sealing conical surface. When the clamping sleeve is stressed to shrink at two ends, the annular convex teeth are meshed with the outer skin of the cable, so that the sealing effect is enhanced, and the tensile property of the cable joint can be enhanced.
Preferably, the included angle between the sealing conical surface and the axial direction is 5-10 degrees, and the ratio of the tooth height of the outer annular convex tooth to the tooth height of the inner annular convex tooth in two annular convex teeth on the same sealing conical surface is 1.1-1.3.
Preferably, the center of the inner hole of the clamping sleeve is provided with a center sealing groove, and a center sealing ring is arranged in the center sealing groove. The central sealing ring in the central sealing groove directly holds and seals the cable joint (seam).
Preferably, the clamping sleeve is made of nylon material, and the connecting sleeve and the end cover are made of metal materials such as aluminum alloy, stainless steel and iron alloy. The nylon material has higher self-strength and elasticity and good insulating property; the connecting sleeve is made of rigid metal materials and has good bending resistance and pressure resistance, so that the cable joint is well protected.
Preferably, a protective sleeve is arranged on the outer side of the connecting sleeve, the protective sleeve is in clearance fit with the connecting sleeve, an annular clamping groove is arranged at the end face clearance of the protective sleeve and the connecting sleeve, and the cross section of the annular clamping groove is trapezoidal; a flange is arranged on the side face of the outer end of the end cover, a sealing convex ring matched with the annular clamping groove is arranged on the inner side face of the flange, the cross section of the sealing convex ring is trapezoidal, and an end sealing ring with a trapezoidal cross section is arranged at the bottom of the annular clamping groove; the protective sleeve is made of composite plastic. The protective sleeve plays a protective role in the connecting sleeve and prevents the connecting sleeve from rusting, corroding and the like.
Preferably, the outer side surface of the connecting sleeve is provided with a plurality of limiting grooves which are distributed along the circumferential direction and are parallel to the axis, and the inner wall of the protective sleeve is provided with limiting convex strips which are in one-to-one correspondence with the limiting grooves. Spacing recess, spacing sand grip cooperation location prevent relative rotation between protective sheath and the adapter sleeve, and spacing boss also can increase the intensity of protective sheath self simultaneously.
Preferably, an annular groove is formed in the middle of the outer side of the connecting sleeve, and heat insulation filler is filled in the annular groove. The annular groove can reduce the materials of the connecting sleeve, and meanwhile, the heat insulation filler in the annular groove plays a heat insulation role, so that the transmission of external heat to the cable is slowed down.
Preferably, the outer end face of the end cover extends outwards to form a convex ring, and the outer side face of the convex ring is provided with knurls; the outer terminal surface of bulge loop extends and forms auxiliary joint, auxiliary joint's lateral surface is equipped with the screw thread, the outside bottom that lies in auxiliary joint on the lateral surface of bulge loop is equipped with the end face seal groove. The convex ring is convenient for being held by hands to rotate, so that the threads between the end cover and the connecting sleeve are screwed tightly; some cables need to be completely protected, the ends of other cable protection pipes can be directly in threaded butt joint with the auxiliary joint, and corresponding sealing gaskets are arranged in the end face sealing grooves for sealing.
Therefore, the invention has the following beneficial effects: (1) the three-way sealing is realized through the end cover sealing ring, the double-lip sealing ring and the central sealing ring from outside to inside in sequence, and the sealing effect at the cable joint is very good; (2) the compression resistance and the compression resistance of the cable joint are obviously improved, and the connection stability and the reliability of the cable joint are greatly improved.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a left side view of fig. 2.
Fig. 4 is a cross-sectional view taken at a-a in fig. 3.
Fig. 5 is a schematic view of fig. 2 with the protective cover removed.
Fig. 6 is a schematic connection diagram of the end cover, the connecting sleeve and the clamping sleeve.
Fig. 7 is a schematic connection diagram of the connecting sleeve and the clamping sleeve.
Fig. 8 is a cross-sectional view of the end cap.
Fig. 9 is a partially enlarged view of a portion B in fig. 4.
Fig. 10 is a partially enlarged view of C in fig. 4.
FIG. 11 is a schematic view of the connection of the end cap to the cable shield tube.
In the figure: the connecting sleeve comprises a connecting sleeve 1, an annular positioning groove 100, a limiting groove 101, an annular groove 102, a clamping sleeve 2, a positioning convex ring 200, a sealing conical surface 201, an annular sealing groove 202, a double-lip sealing ring 203, an annular gap 204, a supporting convex ring 205, an annular convex tooth 206, a central sealing groove 207, a central sealing ring 208, an end cover 3, a supporting sleeve 300, a supporting conical surface 301, a sealing retainer ring 302, an end cover sealing groove 303, an end cover sealing ring 304, a flange 305, a sealing convex ring 306, an end sealing ring 307, a convex ring 308, a knurling 309, an auxiliary joint 310, an end face sealing groove 311, a protective sleeve 4, an annular clamping groove 400, a limiting convex strip 401, a cable 5 and a cable protective tube 6.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1, 2, 3, 4 and 7, the cable joint protection assembly structure comprises a connecting sleeve 1, wherein a clamping sleeve 2 is arranged in the middle of the connecting sleeve 1, and the clamping sleeve is made of an insulating elastic material; a positioning convex ring 200 is arranged at the center of the outer side of the clamping sleeve 2, and an annular positioning groove 100 matched with the positioning convex ring is arranged at the center of the connecting sleeve 1; the two ends of the inner hole of the clamping sleeve 2 are symmetrically provided with sealing conical surfaces 201 with large outer parts and small inner parts, an annular sealing groove 202 is arranged on each sealing conical surface 201, a double-lip sealing ring 203 is arranged in each annular sealing groove 202, an annular gap 204 is formed between the outer walls of the two ends of the clamping sleeve 2 and the inner wall of the connecting sleeve, the outer sides of the two ends of the clamping sleeve 2 extend to form supporting convex rings 205, the cross sections of the supporting convex rings 205 are circular, and the supporting convex rings and the clamping sleeve are of an integrated structure;
two annular convex teeth 206 are arranged on the part, positioned outside the annular sealing groove, of each sealing conical surface 201, the included angle between the sealing conical surface 201 and the axial direction is 5-10 degrees, and the ratio of the tooth height of the outer annular convex teeth to the tooth height of the inner annular convex teeth in the two annular convex teeth 206 on the same sealing conical surface 201 is 1.1-1.3; the center of the inner hole of the clamping sleeve 2 is provided with a center sealing groove 207, and a center sealing ring 208 is arranged in the center sealing groove.
As shown in fig. 6 and 8, end caps 3 are respectively arranged at two ends of the connecting sleeve 1, the end caps are in threaded connection with the connecting sleeve, an inner end surface of each end cap 3 extends axially to form a support sleeve 300, a support conical surface 301 is arranged on an inner end wall of the support sleeve 300, as shown in fig. 10, a seal retainer ring 302 is arranged on an outer end inner wall of each end cap 3, an end cap seal groove 303 is arranged on an inner wall of each seal retainer ring 302, and an end cap seal ring 304 is arranged in each end cap seal groove; when the end cover is in threaded connection with the connecting sleeve, the supporting conical surface is abutted against the outer side end of the clamping sleeve; the connecting sleeve and the end cover are made of metal materials such as aluminum alloy, stainless steel, iron alloy and the like. The clamping sleeve 2 in the embodiment is made of nylon materials, and the connecting sleeve and the end cover are made of aluminum alloy.
As shown in fig. 4, 5 and 9, a protective sleeve 4 is arranged on the outer side of the connecting sleeve 1, the protective sleeve is made of composite plastic, the protective sleeve 4 is in clearance fit with the connecting sleeve 1, an annular clamping groove 400 is arranged at the end face clearance of the protective sleeve and the connecting sleeve, and the cross section of the annular clamping groove 400 is trapezoidal; a flange 305 is arranged on the side face of the outer end of the end cover 3, a sealing convex ring 306 matched with the annular clamping groove is arranged on the inner side face of the flange 305, the cross section of the sealing convex ring 306 is trapezoidal, and an end sealing ring 307 with a trapezoidal cross section is arranged at the bottom of the annular clamping groove; a plurality of limiting grooves 101 which are distributed along the circumferential direction and are parallel to the axis are arranged on the outer side surface of the connecting sleeve 1, and limiting convex strips 401 which are in one-to-one correspondence with the limiting grooves are arranged on the inner wall of the protective sleeve 4; an annular groove 102 is arranged in the middle of the outer side of the connecting sleeve 1, and heat insulation filler is filled in the annular groove.
As shown in fig. 5, 8 and 10, the outer end face of the end cap 3 extends outwards to form a convex ring 308, and the outer side face of the convex ring is provided with knurls 309; the outer end face of the convex ring 308 extends to form an auxiliary joint 310, the outer side face of the auxiliary joint is provided with threads, and the outer side face of the convex ring, which is positioned at the outer bottom of the auxiliary joint, is provided with an end face sealing groove 311.
The principle of the invention is as follows with reference to the attached drawings: before two cables 5 need to be in butt joint connection, a clamping sleeve and a connecting sleeve are assembled together, one of the cables sequentially penetrates through an end cover, the connecting sleeve and the end cover, then the two cables are in butt joint connection, the connecting sleeve is moved to enable the middle position of the connecting sleeve to be just positioned at the joint of the two cables, the cable joint is positioned between two double-lip sealing rings at the moment, finally the end cover and the connecting sleeve are screwed down, in the process of screwing down the end cover, a supporting conical surface of a supporting sleeve on the end cover abuts against two ends of the clamping sleeve, the outer sides of the two ends of the clamping sleeve shrink to tightly hold the cables due to the elasticity of the clamping sleeve, the double-lip sealing rings on the sealing conical surface isolate and seal the cable joint, and the end cover sealing rings in the end cover also play a role in sealing, so that external moisture, silt and the like are prevented from entering the connecting sleeve; the clamping sleeve has an elastic reaction force to the supporting sleeve when being compressed and contracted, and the elastic reaction force enables the end cover to have a pretightening force, so that the end cover can be prevented from loosening; the cable joint department is connected, sealed through this kind of protection component, even cable joint department takes place to buckle and also can not lead to the disconnection, and the performance is very stable. As shown in fig. 10, the cable protection tube 6 at other parts of the cable can also be directly connected and sealed with the auxiliary joint by screw threads, and the protection assembly and the cable protection tube are combined to construct a cable protection system, so that the cable is well protected.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (9)
1. A cable joint protection assembly structure comprises a connecting sleeve and is characterized in that a clamping sleeve is arranged in the middle of the connecting sleeve and is made of insulating elastic materials, a positioning convex ring is arranged at the center of the outer side of the clamping sleeve, and an annular positioning groove matched with the positioning convex ring is formed in the center of the connecting sleeve; two ends of an inner hole of the clamping sleeve are symmetrically provided with sealing conical surfaces with large outer parts and small inner parts, an annular sealing groove is arranged on each sealing conical surface, a double-lip sealing ring is arranged in each annular sealing groove, and an annular gap is formed between the outer walls of the two ends of the clamping sleeve and the inner wall of the connecting sleeve; end covers are arranged at two ends of the connecting sleeve and are in threaded connection with the connecting sleeve, the inner end face of each end cover extends in the axial direction to form a supporting sleeve, a supporting conical surface is arranged on the inner wall of the inner end of each supporting sleeve, a sealing check ring is arranged on the inner wall of the outer end of each end cover, an end cover sealing groove is formed in the inner wall of each sealing check ring, and an end cover sealing ring is arranged in each end cover sealing groove; when the end cover is in threaded connection with the connecting sleeve, the supporting conical surface is abutted against the outer side end of the clamping sleeve; a protective sleeve is arranged on the outer side of the connecting sleeve and is in clearance fit with the connecting sleeve, an annular clamping groove is arranged at the end surface clearance of the protective sleeve and the connecting sleeve, and the cross section of the annular clamping groove is trapezoidal; a flange is arranged on the side face of the outer end of the end cover, a sealing convex ring matched with the annular clamping groove is arranged on the inner side face of the flange, the cross section of the sealing convex ring is trapezoidal, and an end sealing ring with a trapezoidal cross section is arranged at the bottom of the annular clamping groove; the protective sleeve is made of composite plastic.
2. The cable splice protective assembly structure of claim 1, wherein said clamping sleeve has a supporting protrusion extending from the outer side of each end thereof, said supporting protrusion having a circular cross-section, said supporting protrusion and said clamping sleeve being integrally formed.
3. The cable joint protecting assembly structure as claimed in claim 1 or 2, wherein each sealing cone surface is provided with two annular convex teeth at a position outside the annular sealing groove.
4. A cable splice protective component according to claim 3, wherein said sealing cone has an angle of 5 ° to 10 ° with respect to the axial direction, and wherein the ratio of the tooth height of the outer annular projection to the tooth height of the inner annular projection is 1.1 to 1.3 between the two annular projections on the same sealing cone.
5. The cable joint protection assembly structure of claim 1, wherein a center sealing groove is formed in the center of the inner hole of the clamping sleeve, and a center sealing ring is arranged in the center sealing groove.
6. The structure of claim 1, wherein the clamping sleeve is made of nylon, and the connecting sleeve and the end cap are made of metal materials such as aluminum alloy, stainless steel and iron alloy.
7. The structure of claim 1, wherein the outer surface of the connecting sleeve has a plurality of circumferentially distributed limiting grooves parallel to the axis, and the inner wall of the protective sheath has a plurality of limiting protrusions corresponding to the limiting grooves.
8. The cable joint protection component structure according to claim 1 or 7, wherein an annular groove is formed in the middle of the outer side of the connecting sleeve, and the annular groove is filled with heat insulation filler.
9. The cable splice containment assembly structure of claim 1 wherein the outer end surface of said end cap extends outwardly to form a raised ring, the outer side surface of said raised ring being knurled; the outer terminal surface of bulge loop extends and forms auxiliary joint, auxiliary joint's lateral surface is equipped with the screw thread, the outside bottom that lies in auxiliary joint on the lateral surface of bulge loop is equipped with the end face seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854372.6A CN111969548B (en) | 2020-08-24 | 2020-08-24 | Cable joint protection component structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854372.6A CN111969548B (en) | 2020-08-24 | 2020-08-24 | Cable joint protection component structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111969548A CN111969548A (en) | 2020-11-20 |
| CN111969548B true CN111969548B (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010854372.6A Active CN111969548B (en) | 2020-08-24 | 2020-08-24 | Cable joint protection component structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111969548B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097948B (en) * | 2021-04-08 | 2022-05-06 | 河北富司特电力器材有限公司 | Anti-freezing high-temperature-resistant composite cable protection sleeve |
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| CN211238567U (en) * | 2019-12-16 | 2020-08-11 | 大庆普勒石油技术开发有限公司 | Lock ball type underground cable butt joint tool |
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| JPH1070826A (en) * | 1996-08-28 | 1998-03-10 | Showa Electric Wire & Cable Co Ltd | Seal structure for prefabricated joint |
| US6231086B1 (en) * | 2000-03-24 | 2001-05-15 | Unisert Multiwall Systems, Inc. | Pipe-in-pipe mechanical bonded joint assembly |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111969548A (en) | 2020-11-20 |
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Effective date of registration: 20201223 Address after: 311604 No.100 Yanling Road, Meicheng Town, Jiande City, Hangzhou City, Zhejiang Province 414 Applicant after: Zhejiang Baihui Electric Co.,Ltd. Applicant after: STATE GRID ZHEJIANG JIANDE POWER SUPPLY Co.,Ltd. Applicant after: JIANDE GUANYUAN COMPLETE ELECTRICAL MANUFACTURING BRANCH, HANGZHOU ELECTRIC POWER EQUIPMENT MANUFACTURING Co.,Ltd. Address before: 311604 No.100 Yanling Road, Meicheng Town, Jiande City, Hangzhou City, Zhejiang Province 414 Applicant before: Zhejiang Baihui Electric Co.,Ltd. |
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Effective date of registration: 20230801 Address after: 414, No. 100, Yanling Road, Meicheng Town, Jiande City, Hangzhou City, Zhejiang Province, 311600 Patentee after: Zhejiang Baihui Electric Co.,Ltd. Patentee after: State Grid Zhejiang Electric Power Co., Ltd. Jiande power supply Co. Patentee after: JIANDE GUANYUAN COMPLETE ELECTRICAL MANUFACTURING BRANCH, HANGZHOU ELECTRIC POWER EQUIPMENT MANUFACTURING Co.,Ltd. Patentee after: Hangzhou Jinyuan Technology Innovation Co.,Ltd. Address before: 311604 No.100 Yanling Road, Meicheng Town, Jiande City, Hangzhou City, Zhejiang Province 414 Patentee before: Zhejiang Baihui Electric Co.,Ltd. Patentee before: STATE GRID ZHEJIANG JIANDE POWER SUPPLY CO.,LTD. Patentee before: JIANDE GUANYUAN COMPLETE ELECTRICAL MANUFACTURING BRANCH, HANGZHOU ELECTRIC POWER EQUIPMENT MANUFACTURING Co.,Ltd. |