CN107895928B - Cold contraction intermediate head with heat dissipation function - Google Patents
Cold contraction intermediate head with heat dissipation function Download PDFInfo
- Publication number
- CN107895928B CN107895928B CN201711165659.2A CN201711165659A CN107895928B CN 107895928 B CN107895928 B CN 107895928B CN 201711165659 A CN201711165659 A CN 201711165659A CN 107895928 B CN107895928 B CN 107895928B
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- China
- Prior art keywords
- cold
- semi
- intermediate joint
- layer
- heat dissipation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 19
- 230000008602 contraction Effects 0.000 title description 2
- 229920001971 elastomer Polymers 0.000 claims description 45
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 230000035882 stress Effects 0.000 abstract description 23
- 238000001816 cooling Methods 0.000 abstract description 9
- 230000032683 aging Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Cable Accessories (AREA)
Abstract
The invention discloses a cold-contraction intermediate joint with a heat dissipation function, which comprises two connecting cables, wherein the two connecting cables are connected through a connecting pipe, two ends of the connecting pipe are respectively provided with an inner semi-conductive layer, one end of the inner semi-conductive layer, far away from the connecting pipe, is provided with an insulating layer, a semi-conductive layer is sleeved outside the connecting pipe, the inner semi-conductive layer and the insulating layer, one end of the insulating layer, far away from the inner semi-conductive layer, is provided with a stress cone, one end of the stress cone, far away from the insulating layer, is provided with an outer semi-conductive layer, and one end of the outer semi-conductive layer, far away from the stress cone. Has the advantages that: the effect of cooling is achieved through exchange of hot air and cold air, the cooling speed of the intermediate joint is greatly increased, the probability of fire hazard is reduced, the circuit is ensured to be common, and the problems of easy aging and short service life of the intermediate joint are effectively solved.
Description
Technical Field
The invention relates to the field of cable accessories, in particular to a cold-contraction intermediate joint with a heat dissipation function.
Background
An intermediate joint is generally referred to as a cable intermediate joint, i.e. a cable joint in the middle of a cable run. The intermediate connector is a cable accessory for the intermediate connection of cross-linked cables or oil-immersed cables of various voltage classes. The main function is to keep the circuit smooth, keep the cable sealed, and ensure the insulation grade at the cable joint, so that the cable can run safely and reliably.
But because the cable line interface department is easy to take place high temperature phenomenon, current intermediate head tightly relies on external natural cooling for intermediate head is ageing easily, and the life-span of using is not long.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a cold-contraction intermediate joint with a heat dissipation function, so as to overcome the technical problems in the prior related art.
The technical scheme of the invention is realized as follows:
a cold-contraction intermediate joint with a heat dissipation function comprises connecting cables, the number of the connecting cables is two, the connecting cables are connected through connecting pipes, two ends of the connecting pipes are provided with inner semi-conductive layers, one ends of the inner semi-conductive layers, which are far away from the connecting pipes, are provided with insulating layers, semi-conductive layers are sleeved outside the connecting pipes, the insulating layers are provided with stress cones, one ends of the inner semi-conductive layers, which are far away from the insulating layers, are provided with outer semi-conductive layers, one ends of the outer semi-conductive layers, which are far away from the stress cones, are provided with copper shields, the inner semi-conductive layers, the insulating layers, the stress cones, the outer semi-conductive layers and the copper shields are all sleeved outside the connecting cables, the inner semi-conductive layers, the insulating layers, the stress cones, the outer semi-conductive layers and the copper shields are externally provided with connecting devices, and, the shrinkage intermediate head body comprises first rubber layer and second rubber layer, be equipped with a plurality of air vents on the second rubber layer, first rubber layer overcoat is equipped with the copper weaving layer, first rubber layer inner wall is equipped with the core insulating layer, the fixed a plurality of standing grooves that are equipped with of second rubber in situ portion, be equipped with the fire prevention piece in the standing groove, the fixed montant that is equipped with on the fire prevention piece, be equipped with the disc on the montant, the disc with first rubber layer only contacts and does not connect with.
Furthermore, the stress cone comprises a curved part and a linear part, wherein a plurality of circles of first bulges are arranged on the inner wall of the linear part, and the curved part is attached to the connecting cable.
Furthermore, a cold-shrink sleeve is arranged inside the stress cone and sleeved on the connecting cable.
Furthermore, a plurality of second bulges are arranged on the cold shrinkage sleeve and are meshed with the first bulges.
Furthermore, the vent is located the both ends of shrinkage intermediate head body all are equipped with the gas outlet, the gas outlet is just right connecting cable.
Furthermore, the gas outlet is provided with a circle of high temperature resistant moisture absorption cloth which surrounds the outer wall of the stress cone.
Further, the diameter of the disc is equal to the inner diameter of the placement groove, and the placement groove is made of metal.
The invention has the beneficial effects that: by arranging the first rubber layer and the second rubber layer and reserving the vent hole between the first rubber layer and the second rubber layer, the first rubber layer can be tightly attached to the opening of the placing groove due to the flexibility of rubber at normal temperature, when high temperature occurs during electrification, the placing groove made of metal can be instantly heated up to enable the fireproof block in the placing groove to expand, the vertical rod can be driven by the fireproof block to move upwards due to the fact that the placing groove is made of metal, the first rubber layer can be separated from the placing groove by the disc on the vertical rod, at the moment, air can be discharged through the vent hole due to heating, a part of heat is brought out, outside cold air can be pressed into the vent hole by atmospheric pressure, the effect of cooling is achieved through exchange of hot air and cold air, the cooling speed of the intermediate joint is greatly increased, and the probability of fire disasters is reduced, the common line is guaranteed, and the problems that the intermediate joint is easy to age and the service life is short are effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a cold-shrink intermediate joint having a heat dissipation function according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a placement groove in a cold-shrink intermediate joint having a heat dissipation function according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a middle vent hole of a cold-shrink intermediate joint having a heat dissipation function according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a stress cone in a cold-shrink intermediate joint with heat dissipation capability according to an embodiment of the present invention.
In the figure:
1. connecting a cable; 2. a connecting pipe; 3. an inner semiconductive layer; 4. an insulating layer; 5. a semiconducting layer; 6. a stress cone; 7. an outer semiconductive layer; 8. shielding copper; 9. a connecting device; 10. a cold-shrink intermediate joint body; 11. a first rubber layer; 12. a second rubber layer; 13. a vent hole; 14. a copper braid layer; 15. a placement groove; 16. a fire prevention block; 17. a vertical rod; 18. a disc; 19. a first protrusion; 20. a cold shrink sleeve; 21. a second protrusion; 22. an air outlet; 23. high temperature resistant hygroscopic cloth; 24. a curved portion; 25. a straight line portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
According to an embodiment of the present invention, there is provided a cold-shrink intermediate joint having a heat dissipation function.
As shown in fig. 1 to 4, a cold-shrink intermediate joint with a heat dissipation function according to an embodiment of the present invention includes two connection cables 1, the connection cables 1 are connected to each other through a connection pipe 2, an inner semi-conductive layer 3 is disposed at each of two ends of the connection pipe 2, an insulating layer 4 is disposed at one end of the inner semi-conductive layer 3 away from the connection pipe 2, a semi-conductive layer 5 is sleeved outside between the connection pipe 2, the inner semi-conductive layer 3 and the insulating layer 4, a stress cone 6 is disposed at one end of the insulating layer 4 away from the inner semi-conductive layer 3, an outer semi-conductive layer 7 is disposed at one end of the stress cone 6 away from the insulating layer 4, a copper shield 8 is disposed at one end of the outer semi-conductive layer 7 away from the stress cone 6, the inner semi-conductive layer 3, the insulating layer 4, the stress cone 6, the outer semi-conductive layer 7 and the copper shield 8, interior semi-conductive layer 3, insulating layer 4, stress cone 6, outer semi-conductive layer 7 and the 8 outside covers of copper shield are equipped with connecting device 9, connecting device 9 includes shrinkage intermediate head body 10, the shrinkage intermediate head body comprises first rubber layer 11 and second rubber layer 12, be equipped with a plurality of air vents 13 on the second rubber layer 12, 11 overcoat on first rubber layer is equipped with copper weaving layer 14, first rubber layer 11 inner wall is equipped with core insulating layer 4, the inside fixed a plurality of standing grooves 15 that are equipped with of second rubber layer 12, be equipped with fire prevention piece 16 in the standing groove 15, the fixed montant 17 that is equipped with on the fire prevention piece 16, be equipped with disc 18 on the montant 17, disc 18 with first rubber layer 11 only contacts and does not throw out of gear.
Through the above scheme of the invention, the first rubber layer 11 and the second rubber layer 12 are arranged, and the vent hole 13 is reserved between the first rubber layer 11 and the second rubber layer 12, so that at normal temperature, the first rubber layer 11 can be tightly attached to the opening of the placement groove 15 due to the flexibility of rubber, when a high temperature condition occurs during electrification, the placement groove 15 made of metal can be instantly heated up, the fireproof block 16 in the placement groove 15 is expanded, the fireproof block 16 can drive the vertical rod 17 to move upwards due to the placement groove 15 made of metal, the disc 18 on the vertical rod 17 can separate the first rubber layer 11 from the placement groove 15, at the moment, air can be discharged through the vent hole 13 due to heating, a part of heat is taken out, the atmospheric pressure can press outside cold air into the vent hole 13, and the effect of cooling can be achieved through the exchange of hot air and cold air, the cooling speed of the intermediate joint is greatly increased, the probability of fire hazard is reduced, the circuit is guaranteed, and the problems of easy aging and short service life of the intermediate joint are effectively solved.
In addition, in an embodiment, for the stress cone 6, the stress cone 6 includes a curved portion 24 and a linear portion 25, the inner wall of the linear portion 25 is provided with a plurality of circles of first protrusions 19, the curved portion 24 and the connection cable 1 are mutually attached, a cold shrink sleeve 20 is arranged inside the stress cone 6, the cold shrink sleeve 20 is sleeved on the connection cable 1, the cold shrink sleeve 20 is provided with a plurality of second protrusions 21, and the second protrusions 21 are engaged with the first protrusions 19. By adopting the scheme, the stress cone 6 can be tightly attached to the connecting cable 1 by the engagement of the second protrusions 21 on the cold shrink sleeve 20 and the second protrusions 21 on the inner wall of the straight part 25, and the firmness of the stress cone 6 and the connecting cable 6 is improved.
Further, in one embodiment, as for the above cold shrink sleeve 20, the cold shrink sleeve 20 is formed by injection vulcanization molding of an elastomer material (commonly used silicone rubber and ethylene propylene rubber) in a factory, and then expanded and lined with a plastic spiral support.
In addition, in one embodiment, for the vent hole 13, air outlets 22 are respectively arranged at two ends of the vent hole 13, which are located at the cold-shrink intermediate joint body 10, and the air outlets 22 are opposite to the connecting cable 1. With the adoption of the scheme, the air outlet 22 cannot directly face the outside, so that dust and water vapor outside cannot easily enter the air outlet 22.
In addition, in one embodiment, for the air outlet 22, the air outlet 22 is provided with a ring of high temperature resistant hygroscopic cloth 23, and the high temperature resistant hygroscopic cloth 23 surrounds the outer wall of the stress cone 6. By adopting the scheme, the outside water vapor and dust can be filtered through the high-temperature moisture absorption cloth 23.
In addition, in one embodiment, the diameter of the disc 18 is equal to the inner diameter of the placement slot 15 for the disc 18, and the placement slot 15 is made of metal. By adopting the scheme, the disc 18 can be tightened in the placing groove 15 under the action of the fireproof block 16, and the fireproof block 16 is a CP 657 expansion type fireproof block.
In summary, according to the above technical solution of the present invention, by providing the first rubber layer 11 and the second rubber layer 12, and reserving the vent hole 13 between the first rubber layer 11 and the second rubber layer 12, at normal temperature, the first rubber layer 11 will be tightly attached to the opening of the placement groove 15 due to the flexibility of rubber, when a high temperature occurs during power-on, the placement groove 15 made of metal will be heated up instantaneously, so that the fire-proof block 16 in the placement groove 15 will expand, since the placement groove 15 is made of metal, the fire-proof block 16 will drive the vertical rod 17 to move upward, the disc 18 on the vertical rod 17 will separate the first rubber layer 11 from the placement groove 15, at this time, the air will be discharged through the vent hole 13 due to being heated, a part of heat will be taken out, the atmospheric pressure will press the outside cold air into the vent hole 13, and the effect of cooling will be achieved through the exchange between the hot air and the cold air, the cooling speed of the intermediate joint is greatly increased, the probability of fire hazard is reduced, the circuit is guaranteed, and the problems of easy aging and short service life of the intermediate joint are effectively solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The cold-contraction intermediate joint with the heat dissipation function is characterized by comprising connecting cables (1), wherein the number of the connecting cables (1) is two, the connecting cables (1) are connected through connecting pipes (2), the two ends of each connecting pipe (2) are provided with an inner semi-conductive layer (3), the inner semi-conductive layers (3) are far away from one ends of the connecting pipes (2) and are provided with insulating layers (4), the connecting pipes (2), the inner semi-conductive layers (3) and the insulating layers (4) are externally sleeved with semi-conductive layers (5), one ends of the inner semi-conductive layers (3) far away from the insulating layers (4) are provided with stress cones (6), one ends of the stress cones (6) far away from the insulating layers (4) are provided with outer semi-conductive layers (7), the outer semi-conductive layers (7) are far away from one ends of the stress cones (6) are provided with copper shields (8, the inner semi-conductive layer (3), the insulating layer (4), the stress cone (6), the outer semi-conductive layer (7) and the copper shield (8) are all sleeved outside the connecting cable (1), the outer semi-conductive layer (3), the insulating layer (4), the stress cone (6), the outer semi-conductive layer (7) and the copper shield (8) are externally sleeved with a connecting device (9), the connecting device (9) comprises a cold-shrinkage intermediate joint body (10), the cold-shrinkage intermediate joint body consists of a first rubber layer (11) and a second rubber layer (12), a plurality of vent holes (13) are formed in the second rubber layer (12), a copper woven layer (14) is sleeved outside the first rubber layer (11), the inner wall of the first rubber layer (11) is provided with the core insulating layer (4), a plurality of placing grooves (15) are fixedly formed in the second rubber layer (12), and a fireproof block (16) is arranged in the placing groove (15), the fireproof block (16) is fixedly provided with a vertical rod (17), the vertical rod (17) is provided with a disc (18), and the disc (18) is not connected with the first rubber layer (11) in a contact mode.
2. The cold-shrink intermediate joint with the heat dissipation function as recited in claim 1, wherein the stress cone (6) comprises a curved portion (24) and a straight portion (25), the inner wall of the straight portion (25) is provided with a plurality of circles of first protrusions (19), and the curved portion (24) and the connection cable (1) are attached to each other.
3. The cold-shrink intermediate joint with the heat dissipation function as recited in claim 2, wherein a cold-shrink sleeve (20) is arranged inside the stress cone (6), and the cold-shrink sleeve (20) is sleeved on the connecting cable (1).
4. The cold-shrink intermediate joint with the heat dissipation function as claimed in claim 3, wherein the cold-shrink sleeve (20) is provided with a plurality of second protrusions (21), and the second protrusions (21) are engaged with the first protrusions (19).
5. The cold-shrink intermediate joint with the heat dissipation function as recited in claim 4, wherein the vent holes (13) are provided with air outlets (22) at both ends of the cold-shrink intermediate joint body (10), and the air outlets (22) are opposite to the connecting cable (1).
6. The cold-shrink intermediate joint with the heat dissipation function as recited in claim 5, wherein the air outlet (22) is provided with a ring of high temperature-resistant moisture absorption cloth (23), and the high temperature-resistant moisture absorption cloth (23) surrounds the outer wall of the stress cone (6).
7. The cold-shrink intermediate joint with a heat dissipation function according to claim 6, wherein the diameter of the disc (18) is equal to the inner diameter of the placement groove (15), and the placement groove (15) is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165659.2A CN107895928B (en) | 2017-11-21 | 2017-11-21 | Cold contraction intermediate head with heat dissipation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165659.2A CN107895928B (en) | 2017-11-21 | 2017-11-21 | Cold contraction intermediate head with heat dissipation function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107895928A CN107895928A (en) | 2018-04-10 |
| CN107895928B true CN107895928B (en) | 2020-06-05 |
Family
ID=61805632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711165659.2A Active CN107895928B (en) | 2017-11-21 | 2017-11-21 | Cold contraction intermediate head with heat dissipation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107895928B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004236379A (en) * | 2003-01-28 | 2004-08-19 | Fujikura Ltd | Joint for plastic-insulated power cable |
| DE102011079935A1 (en) * | 2011-07-27 | 2013-01-31 | Tyco Electronics Raychem Gmbh | Device for monitoring failure of connector of high-voltage cable sleeve utilized to connect two high-voltage cables for energy transmission, has transmitting and receiving unit for sending and receiving data over wireless communication link |
| WO2015136813A1 (en) * | 2014-03-13 | 2015-09-17 | 住友電気工業株式会社 | Superconducting cable intermediate connection member and superconducting cable intermediate connection structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201466661U (en) * | 2009-07-17 | 2010-05-12 | 保定合力达电缆附件有限公司 | Cold-shrinking intermediate joint |
| CN202434997U (en) * | 2011-12-26 | 2012-09-12 | 武汉科锐电气有限公司 | Intermediate joint for cold-contraction type cable |
| CN203871044U (en) * | 2014-03-25 | 2014-10-08 | 何金存 | Temperature adjustment type mounting cable |
| US9780549B2 (en) * | 2015-09-17 | 2017-10-03 | Te Connectivity Corporation | Cover assemblies and methods for covering electrical cables and connections |
| CN205646759U (en) * | 2016-03-29 | 2016-10-12 | 宁波经济技术开发区技特电力电缆附件有限公司 | Shrinkage cable intermediate head |
-
2017
- 2017-11-21 CN CN201711165659.2A patent/CN107895928B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004236379A (en) * | 2003-01-28 | 2004-08-19 | Fujikura Ltd | Joint for plastic-insulated power cable |
| DE102011079935A1 (en) * | 2011-07-27 | 2013-01-31 | Tyco Electronics Raychem Gmbh | Device for monitoring failure of connector of high-voltage cable sleeve utilized to connect two high-voltage cables for energy transmission, has transmitting and receiving unit for sending and receiving data over wireless communication link |
| WO2015136813A1 (en) * | 2014-03-13 | 2015-09-17 | 住友電気工業株式会社 | Superconducting cable intermediate connection member and superconducting cable intermediate connection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107895928A (en) | 2018-04-10 |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Xiaojun Inventor after: Dai Mian Inventor after: Dai Wenbing Inventor after: Dai Wenzhong Inventor before: Dai Mian Inventor before: Dai Wenbing Inventor before: Dai Wenzhong |
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| TA01 | Transfer of patent application right | ||
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Effective date of registration: 20200427 Address after: No. 037, group 3, shangxuchang West Street, Xingfu Township, Huarong County, Yueyang City, Hunan Province Applicant after: Dai Wenzhong Applicant after: Zhang Xiaojun Address before: 236800 Anhui city of Bozhou Province Bo Wu Tang Modern Industrial Park Avenue and weft three road intersection Applicant before: ANHUI YIFALA ELECTRICAL Co.,Ltd. |
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Effective date of registration: 20210308 Address after: 236000 intersection of Tang Wang Road and Wei three road in Bo Wu modern industrial park, Bozhou, Anhui Patentee after: Anhui yifala Electric Co.,Ltd. Address before: No. 037, group 3, shangxuchang West Street, Xingfu Township, Huarong County, Yueyang City, Hunan Province, 414200 Patentee before: Dai Wenzhong Patentee before: Zhang Xiaojun |