CN109817402A - A kind of detachable polymeric metal oxide surge arrester - Google Patents
A kind of detachable polymeric metal oxide surge arrester Download PDFInfo
- Publication number
- CN109817402A CN109817402A CN201910194802.3A CN201910194802A CN109817402A CN 109817402 A CN109817402 A CN 109817402A CN 201910194802 A CN201910194802 A CN 201910194802A CN 109817402 A CN109817402 A CN 109817402A
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- Prior art keywords
- composite sheath
- end cap
- hook type
- screw thread
- embeded slot
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- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 16
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 59
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of detachable polymeric metal oxide surge arresters, including composite sheath, outer surface offers outer connection screw thread at the top and bottom of the composite sheath, the composite sheath top and bottom end are mounted on end cap, it is engaged and is detachably connected with the teeth of outer connection screw thread by interior connection screw thread between the composite sheath and end cap, structure of the invention is scientific and reasonable, it is safe and convenient to use, pass through the cooperation of interior connection screw thread and outer connection screw thread, end cap can be effectively mounted on to the top and bottom end of composite sheath, realize the convenient disassembly in end cap and composite sheath, composite sheath caused by when reducing maintenance damages, and pass through the hook type bar after installation, sealing ring is provided with convenient for user's rotary end cover, improve the convenience of end cap disassembly, by the way that sealing ring is tucked into the first embeded slot and the second embeded slot, The case where reducing internal resistance module damp damages caused by extraneous steam in arrester use process.
Description
Technical field
The present invention relates to arrester technical field, specially a kind of detachable polymeric metal oxide surge arrester.
Background technique
Polymeric metal oxide surge arrester is mainly for the protection of various electrical in the systems such as electric power, railway, communication
Equipment is damaged from atmospheric over-voltage, switching overvoltage and Frequency Transient Overvoltage etc., is the basis of power system insulation cooperation,
Polymeric metal oxide surge arrester has good steep wave response characteristic, non-delay to steep wave voltage, and operation residual voltage is low, nothing
The advantages that discharge dispersity.
But end cap and compound outer is fixed usually using being glued in existing market polymeric metal oxide surge arrester
Set, so that composite sheath can not be removed after use, so that arrester is needed in maintenance and recycling through cumbersome behaviour
Work removes composite sheath, and is easy to appear the case where composite sheath damages after the removal, and arrester effect after maintenance is caused to drop
It is low, while composite sheath can not be recycled.
Summary of the invention
The present invention provides a kind of technical solution, can effectively solve to propose existing market composite sheath in above-mentioned background technique
End cap and composite sheath is fixed usually using splicing in metal oxide arrester, so that composite sheath can not take after use
Under, so that arrester needs to remove composite sheath by cumbersome operation in maintenance and recycling, and hold after the removal
Easily there is the case where composite sheath damage, causes arrester effect after maintenance to reduce, while can not recycle to composite sheath
The problem of utilization.
To achieve the above object, the invention provides the following technical scheme: a kind of detachable composite sheath metal oxide
Arrester, including composite sheath are enclosed with resistive module inside the composite sheath, and the resistive module top and bottom end are all provided with
It is equipped with terminal base, outer surface offers outer connection screw thread, the composite sheath top at the top and bottom of the composite sheath
It is mounted on end cap with bottom end, runs through in the middle part of two end caps and connecting terminal is installed, the end cap inner surface is opened
It is engaged with the teeth of outer connection screw thread equipped with interior connection screw thread, between the composite sheath and end cap by interior connection screw thread removable
Unload connection；
The end cap bottom outside surface positioned at composite sheath top and the end cap top positioned at composite sheath bottom end
Portion's outer surface offers the first embeded slot, and equidistant splicing has baffle inside first embeded slot, described compound outer
Offer the second embeded slot at the corresponding first chimeric groove location in set top and Basolateral surface, first embeded slot and the
Two embeded slot outer surfaces are enclosed with sealing ring, and the sealing ring inner surface corresponds to and offers water conservancy diversion at baffle position
Slot；
The end cap top is angularly welded with location and installation column, and the end cap top corresponds to pacifies at location and installation column position
Equipped with hook type bar, the hook type bar top corresponds to and offers mounting hole at location and installation column position.
Preferably, the inner surface of sealing ring rooved face fitting chimeric with the first embeded slot and second.
Preferably, the hook type bar bottom end, which is glued, auxiliary rod, the side surface of the auxiliary rod and sealing ring outer surface
Fitting.
Preferably, the overall diameter of the location and installation column mutually agrees with mounting hole interior diameter, the hook type bar and end cap it
Preceding be inserted into mounting hole by location and installation column is detachably connected.
Preferably, storage chamber is offered at the top of the end cap, the storage chamber front end offers notch；
The storage chamber interior is equipped with scroll spring, described scroll spring one end and the fixed company of storage chamber inner wall
It connects, the scroll spring other end is connected with steel wire rope, and described steel wire rope one end passes through notch and is equipped with gag lever post.
Preferably, the hook type operative tip of the hook type bar and bottom end, which are glued, rubber cushion blocks, the limit pole length
It is seven times of diameter, and the overall diameter of the gag lever post is less than hook type bar and rubber cushion blocks form the minimum range in space.
Compared with prior art, beneficial effects of the present invention: structure of the invention is scientific and reasonable, safe and convenient to use:
1, by the cooperation of interior connection screw thread and outer connection screw thread, end cap can be effectively mounted on to the top of composite sheath
And bottom end, it realizes the convenient disassembly in end cap and composite sheath, reduces composite sheath caused by when repairing and damage, and pass through installation
Hook type bar afterwards is provided with sealing ring convenient for user's rotary end cover, improves the convenience of end cap disassembly, by by sealing ring plug
Enter into the first embeded slot and the second embeded slot, reduces internal resistance module tide caused by extraneous steam in arrester use process
The bad situation of damage of damp, while the setting of baffle and diversion trench can be further reduced and enter interior connection screw thread and outer connection spiral shell
It is water stain in line gap, improve moisture-proof efficiency.
2, gag lever post is pulled, the indoor steel wire rope of containing cavities is extracted out from notch, so that steel wire rope is worn again after bypassing the body of rod
Hook type bar hook type part is crossed, hook type bar is blocked after recycling gag lever post horizontal and is fixed, and then utilize iron wire convenient for user
Arrester is temporarily placed or is hung at the body of rod by rope, and user carries out temporarily it when installing and overhauling arrester
It places, the efficiency of user's installation and maintenance arrester is improved, while by the setting of scroll spring, convenient for withdrawing steel wire rope
To storage chamber, interference arrester routine work is avoided.
3, by being located separately mounting post and mounting hole, hook type bar is removed, then the skirt of housing is blocked by rubber cushion blocks
Side, and then coat part is protected, multiple hook type bars block the skirt of composite sheath, so that device is being placed on level land
When, composite sheath will not guarantee the cleaning on composite sheath surface, composite sheath table caused by reducing therefore directly with ground face contact
Face scratches the case where damage.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
In the accompanying drawings:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is cross-sectional view of the invention；
Fig. 3 is the mounting structure schematic diagram of scroll spring of the present invention；
Fig. 4 is the structural schematic diagram of a-quadrant in Fig. 1 of the present invention；
Fig. 5 is the structural schematic diagram of B area in Fig. 2 of the present invention
Figure label: 1, composite sheath；2, resistive module；3, terminal base；4, outer connection screw thread；5, end cap；6, interior connection
Screw thread；7, the first embeded slot；8, baffle；9, the second embeded slot；10, sealing ring；11, diversion trench；12, notch；13, scrollwork bullet
Spring；14, steel wire rope；15, gag lever post；16, location and installation column；17, hook type bar；18, mounting hole；19, auxiliary rod；20, rubber pad
Block；21, connecting terminal；22, chamber is stored.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment: as shown in Figs. 1-5, the present invention provides a kind of technical solution, a kind of detachable composite sheath metal oxygen
Compound arrester, including composite sheath 1 are enclosed with resistive module 2 inside composite sheath 1, and 2 top of resistive module and bottom end are all provided with
It is equipped with terminal base 3,1 top and bottom outer surface of composite sheath offers outer connection screw thread 4,1 top of composite sheath and bottom
End is mounted on end cap 5, and through connecting terminal 21 is equipped with, 5 inner surface of end cap offers interior company at two 5 middle parts of end cap
Screw thread 6 is connect, is engaged and is detachably connected with the teeth of outer connection screw thread 4 by interior connection screw thread 6 between composite sheath 1 and end cap 5.
5 bottom outside surface of end cap positioned at 1 top of composite sheath and 5 top of end cap positioned at 1 bottom end of composite sheath are outer
Side surface offers the first embeded slot 7, and the equidistant splicing in 7 inside of the first embeded slot has a baffle 8,1 top of composite sheath and
Basolateral surface offers the second embeded slot 9, the first embeded slot 7 and the second embeded slot 9 at corresponding first embeded slot, 7 position
Outer surface is enclosed with sealing ring 10, the inner surface of sealing ring 10 and the first embeded slot 7 and 9 surface of the second embeded slot patch
It closes, sealing ring 10 is effectively sealed the first embeded slot 7 and the second embeded slot 9, reduce extraneous steam and enter again
It closes inside housing 1,10 inner surface of sealing ring corresponds to and offers diversion trench 11 at 8 position of baffle.
5 top of end cap is angularly welded with location and installation column 16, and 5 top of end cap corresponds to and installs at 16 position of location and installation column
There is hook type bar 17,17 top of hook type bar corresponds to and offers mounting hole 18 at 16 position of location and installation column, 17 bottom end glue of hook type bar
Be connected to auxiliary rod 19, the side surface of auxiliary rod 19 and the fitting of 10 outer surface of sealing ring, by auxiliary rod 19 to sealing ring 10 into
Row protection guarantees the stabilization after sealing ring 10 is installed, reduces the case where sealing ring 10 is deducted damage.
Storage chamber 22 is offered at the top of end cap 5, storage 22 front end of chamber offers notch 12, will store by notch 12
Article is extracted out in chamber 22.
Scroll spring 13,13 one end of scroll spring and storage 22 inner wall of chamber fixed company are installed inside storage chamber 22
It connects, 13 other end of scroll spring is connected with steel wire rope 14, and 14 one end of steel wire rope passes through notch 12 and is equipped with gag lever post 15.
The hook type operative tip of hook type bar 17 and bottom end, which are glued, rubber cushion blocks 20, and 15 length of gag lever post is the seven of diameter
Times, and the overall diameter of gag lever post 15 is less than hook type bar 17 and rubber cushion blocks 20 form the minimum range in space, so that gag lever post 15
Hook type bar 17 can be passed through by circular end face, and by blocking hook type bar 17, location and installation column after putting gag lever post 15 vertically
16 overall diameter mutually agrees with 18 interior diameter of mounting hole, is inserted into peace by location and installation column 16 before hook type bar 17 and end cap 5
Dress is detachably connected in hole 18, realizes hook type bar 17, after removing hook type bar 17, is blocked using rubber cushion blocks 20 compound outer
The top and bottom end for covering 1 skirt are protected in face of 1 skirt of composite sheath.
The working principle of the invention and process for using: the detachable polymeric metal oxide surge arrester is installed
When, sealing ring 10 is placed in the second embeded slot 9 first, then rotates hook type bar 17, drives 5 turns of end cap by hook type bar 17
It is dynamic, avoid 5 outer surface of end cap is excessively smooth from being not easy to rotational problems, because passing through outer connection screw thread between end cap 5 and composite sheath 1
4 and interior connection screw thread 6 engagement connection, end cap 5 rotate after, teeth are mutually shifted, so that end cap 5 is installed to 1 end of composite sheath
Portion, and in 5 installation process of end cap, the first embeded slot 7 of 5 end of end cap is slowly mobile to the second embeded slot 9, and makes close
Seal 10 is socketed in the outside of the first embeded slot 7, and sealing ring 10 is enabled effectively to be bonded the first embeded slot 7 and the second embeded slot 9
Side surface is reduced extraneous steam and is entered in composite sheath 1 by the connection gap between end cap 5 and composite sheath 1, avoid because
The damage of internal resistance module 2 caused by this, while it being provided with baffle 8 in the first embeded slot 7, so that water stain on a small quantity enter again
When closing between housing 1 and the first embeded slot 7, it can also be dripped downwards by baffle 8, be further reduced and enter outer connection screw thread
Aqueous between 4 and interior connection screw thread 6 improves the leakage efficiency of detachable housing, and the setting of hook type bar 17 effectively avoids
5 surface of end cap is excessively smooth to be difficult to the case where rotating, and when disassembly, which only needs to rotate backward hook type bar 17, to remove end cap 5；
It is first separately installed when needing for arrester to be placed into the planes such as ground when user carries arrester
Hole 18 and location and installation column 16 remove hook type bar 17, then by blocking composite sheath 1 using the hook type part of hook type bar 17
Skirt, contacted, hook type bar 17 be fixed, multiple hook type bars with the extruding of 1 skirt of composite sheath by rubber cushion blocks 20
17 cooperation is reduced and is therefore caused so that the skirt of composite sheath 1 will not directly be contacted with ground when arrester is placed into ground
1 surface of composite sheath scuffing damage, high-altitude install when, location and installation column 16 is inserted into mounting hole 18 again, it is right
Hook type bar 17 is fixed, and then pulls gag lever post 15, so that gag lever post 15 drives steel wire rope 14 to bypass the body of rod, utilizes gag lever post
15 circular end face passes through the hook type part of hook type bar 17, then puts gag lever post 15 vertically, so that gag lever post 15 blocks hook
Type bar 17, can have for arrester to be placed on the body of rod and hang by the steel wire rope 14 installed in the middle part of gag lever post 15, improve constructor
The efficiency of member's high altitude operation when not needing to hang, as long as swinging gag lever post 15, is passed through using the circular end face of gag lever post 15 again
17 hook type part of hook type bar, because scroll spring 13 generates deformation when gag lever post 15 pulls, 13 deformational stress of scroll spring is by iron
Cord 14 is recovered in storage chamber 22 from notch 12, and steel wire rope 14 is avoided to stretch out the normal work of interference arrester.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely preferred embodiment of the invention, to the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, for those skilled in the art, still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in guarantor of the invention
Within the scope of shield.
Claims (6)
1. a kind of detachable polymeric metal oxide surge arrester, including composite sheath (1), the composite sheath (1) is interior
Portion is enclosed with resistive module (2), and resistive module (2) top and bottom end are provided with terminal base (3), it is characterised in that: institute
It states outer surface at the top and bottom of composite sheath (1) to offer outer connection screw thread (4), composite sheath (1) top and bottom
End is mounted on end cap (5), is run through in the middle part of two end caps (5) and is equipped with connecting terminal (21), on the inside of the end cap (5)
Surface offers interior connection screw thread (6), passes through interior connection screw thread (6) and outer company between the composite sheath (1) and end cap (5)
The teeth engagement for connecing screw thread (4) is detachably connected；
The end cap (5) bottom outside surface positioned at composite sheath (1) top and the end positioned at composite sheath (1) bottom end
Lid (5) top outer surface offers the first embeded slot (7), and the internal equidistant splicing of first embeded slot (7) has water conservancy diversion
It is embedding that second is offered at corresponding first embeded slot (7) position in block (8), composite sheath (1) top and Basolateral surface
It closes slot (9), first embeded slot (7) and the second embeded slot (9) outer surface are enclosed with sealing ring (10), the sealing ring
(10) inner surface corresponds to and offers diversion trench (11) at baffle (8) position；
End cap (5) top is angularly welded with location and installation column (16), and end cap (5) top corresponds to location and installation column
(16) hook type bar (17) is installed, hook type bar (17) top corresponds to be offered at location and installation column (16) position at position
Mounting hole (18).
2. a kind of detachable polymeric metal oxide surge arrester according to claim 1, which is characterized in that described
The inner surface of sealing ring (10) is bonded with the first embeded slot (7) and the second embeded slot (9) surface.
3. a kind of detachable polymeric metal oxide surge arrester according to claim 1, which is characterized in that described
Hook type bar (17) bottom end, which is glued, to be had auxiliary rod (19), the side surface of the auxiliary rod (19) and sealing ring (10) outer surface patch
It closes.
4. a kind of detachable polymeric metal oxide surge arrester according to claim 1, which is characterized in that described
The overall diameter of location and installation column (16) mutually agrees with mounting hole (18) interior diameter, logical before the hook type bar (17) and end cap (5)
It crosses location and installation column (16) and is inserted into mounting hole (18) and be detachably connected.
5. a kind of detachable polymeric metal oxide surge arrester according to claim 1, which is characterized in that described
Storage chamber (22) is offered at the top of end cap (5), storage chamber (22) front end offers notch (12)；
It is equipped with scroll spring (13) inside the storage chamber (22), described scroll spring (13) one end and storage chamber (22)
Inner wall is fixedly connected, and scroll spring (13) other end is connected with steel wire rope (14), and described steel wire rope (14) one end passes through slot
Mouth (12) is equipped with gag lever post (15).
6. a kind of detachable polymeric metal oxide surge arrester according to claim 5, which is characterized in that described
The hook type operative tip of hook type bar (17) and bottom end, which are glued, to be had rubber cushion blocks (20), and gag lever post (15) length is diameter
Seven times, and the overall diameter of the gag lever post (15) is less than hook type bar (17) and rubber cushion blocks (20) form the minimum range in space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194802.3A CN109817402B (en) | 2019-03-14 | 2019-03-14 | Detachable composite jacket metal oxide arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194802.3A CN109817402B (en) | 2019-03-14 | 2019-03-14 | Detachable composite jacket metal oxide arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109817402A true CN109817402A (en) | 2019-05-28 |
| CN109817402B CN109817402B (en) | 2021-02-19 |
Family
ID=66609042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910194802.3A Active CN109817402B (en) | 2019-03-14 | 2019-03-14 | Detachable composite jacket metal oxide arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109817402B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111292907A (en) * | 2020-02-19 | 2020-06-16 | 湖南特诚成套电器有限公司 | Porcelain shell type zinc oxide lightning arrester and using method thereof |
| CN115359983A (en) * | 2022-09-05 | 2022-11-18 | 杭州永德电气有限公司 | Novel arrester for 10KV distribution network |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000348913A (en) * | 1999-06-08 | 2000-12-15 | Meidensha Corp | Lightning arrester |
| CN103151125A (en) * | 2013-03-12 | 2013-06-12 | 郑越 | Over-voltage protector used for 6kV or 10kV alternating-current power system |
| CN206672732U (en) * | 2017-04-08 | 2017-11-24 | 深圳华建电力工程设计有限公司 | Arrester |
| CN107610855A (en) * | 2017-08-17 | 2018-01-19 | 芜湖市凯鑫避雷器有限责任公司 | A kind of protection mechanism for being used to protect electric ceramic lightning arrester full skirt |
| CN207068571U (en) * | 2017-06-12 | 2018-03-02 | 国网河南鄢陵县供电公司 | A kind of electrical equipment lightning arrester |
-
2019
- 2019-03-14 CN CN201910194802.3A patent/CN109817402B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000348913A (en) * | 1999-06-08 | 2000-12-15 | Meidensha Corp | Lightning arrester |
| CN103151125A (en) * | 2013-03-12 | 2013-06-12 | 郑越 | Over-voltage protector used for 6kV or 10kV alternating-current power system |
| CN206672732U (en) * | 2017-04-08 | 2017-11-24 | 深圳华建电力工程设计有限公司 | Arrester |
| CN207068571U (en) * | 2017-06-12 | 2018-03-02 | 国网河南鄢陵县供电公司 | A kind of electrical equipment lightning arrester |
| CN107610855A (en) * | 2017-08-17 | 2018-01-19 | 芜湖市凯鑫避雷器有限责任公司 | A kind of protection mechanism for being used to protect electric ceramic lightning arrester full skirt |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111292907A (en) * | 2020-02-19 | 2020-06-16 | 湖南特诚成套电器有限公司 | Porcelain shell type zinc oxide lightning arrester and using method thereof |
| CN111292907B (en) * | 2020-02-19 | 2022-02-11 | 湖南特诚成套电器有限公司 | Porcelain shell type zinc oxide lightning arrester and using method thereof |
| CN115359983A (en) * | 2022-09-05 | 2022-11-18 | 杭州永德电气有限公司 | Novel arrester for 10KV distribution network |
| CN115359983B (en) * | 2022-09-05 | 2023-03-28 | 杭州永德电气有限公司 | Lightning arrester for 10KV distribution network |
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| Publication number | Publication date |
|---|---|
| CN109817402B (en) | 2021-02-19 |
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Effective date of registration: 20240530 Address after: 264000 1103, No. 29, Haigang Road, Zhifu District, Yantai City, Shandong Province Patentee after: Shandong CHENQiao Electric Technology Co.,Ltd. Country or region after: China Address before: 230601 3rd floor, area a, 393 feicui Road, Taohua Industrial Park, Jingkai District, Hefei City, Anhui Province Patentee before: HEFEI GEWEITE ELECTRIC TECHNOLOGY Co.,Ltd. Country or region before: China |