CN102033279A - Optical fiber composite aerial earth wire (OPGW) energy-saving joint box - Google Patents
Optical fiber composite aerial earth wire (OPGW) energy-saving joint box Download PDFInfo
- Publication number
- CN102033279A CN102033279A CN 201010597740 CN201010597740A CN102033279A CN 102033279 A CN102033279 A CN 102033279A CN 201010597740 CN201010597740 CN 201010597740 CN 201010597740 A CN201010597740 A CN 201010597740A CN 102033279 A CN102033279 A CN 102033279A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- box body
- ground wire
- fiber composite
- overhead ground
- Prior art date
- 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.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 66
- 239000013307 optical fiber Substances 0.000 title claims abstract description 57
- 239000012212 insulator Substances 0.000 claims abstract description 27
- 230000003287 optical effect Effects 0.000 claims abstract description 22
- 238000004134 energy conservation Methods 0.000 claims description 25
- 230000005055 memory storage Effects 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 8
- 230000005611 electricity Effects 0.000 description 8
- 230000006698 induction Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Cable Accessories (AREA)
Abstract
The invention discloses an optical fiber composite aerial earth wire (OPGW) energy-saving joint box, in particular an OPGW optical cable joint box. The box comprises an upper box body and a lower box body, wherein a composite hollow insulator is arranged between the upper box body and the lower box body, and a discharge gap device is arranged between an upper flange and a lower flange at two ends of the composite hollow insulator; the discharge gap device comprises an upper electrode and a lower electrode, and an arc strike protrusion is arranged on the lower electrode; the upper box body is provided with an OPGW optical cable fixing clamp (1), and an optical fiber storage device (1) is arranged in the upper box body; the upper part of the upper box body is provided with an upper cover; the composite hollow insulator is internally provided with an optical fiber unit; the lower box body is provided with an OPGW optical cable fixing clamp (2); a cable inlet hole of the lower box body is internally provided with a rubber taper (2) and a nut cap (2); the lower box body is internally provided with an optical fiber storage device (2); and the bottom surface of the lower box body is provided with a sealing ring (2) and a mounting base.
Description
Technical field
What the energy-conservation connector box of Optical Fiber composite overhead Ground Wire of the present invention related to is the energy-conservation connector box of a kind of Optical Fiber composite overhead Ground Wire, is a kind of Optical Fiber composite overhead Ground Wire (OPGW) cable splice closure that is used for.
Background technology
Along with the continuous development of electrical network, the OPGW optical cable at home and abroad is widely used in the power communication system, and is developed rapidly.The OPGW optical cable is used for transmission of Information as optical cable on the one hand in application on power system; On the other hand, as the ground wire of circuit, play lightning-arrest effect.When transmission line of electricity normally moves, can generate an electromagnetic field around the lead, can produce electromagnetism and electrostatic field coupling between ground wire and the lead, because ground wire is generally unequal to the distance of each phase conductor, the mutual inductance between them just has difference.Therefore, induction produces longitudinal induction electromotive force and the electrostatic induction voltage that distributes along the line on ground wire.When OPGW and common ground wire during, will between OPGW, common ground wire and the earth, form electric current, thereby produce certain electric energy loss all by tower ground connection.
Because technical merit is limited, and the OPGW optical cable is difficult to realize graded insulation,, still cause the electric energy loss of transmission line of electricity to a certain extent for a long time so still adopt mode by tower ground connection.Simultaneously, different because of common lightning conducter on the same tower and OPGW earthing mode make OPGW increased by lightning strike probability, and OPGW is easy to generate a disconnected burst of damage problem.
Summary of the invention
The objective of the invention is provides a kind of Optical Fiber composite overhead Ground Wire energy-conservation connector box at above-mentioned weak point, under the prerequisite that guarantees the OPGW optical cable performance, adopt the graded insulation single-point grounding, reduce the induction current loss that OPGW optical produces by tower ground connection, when being struck by lightning, by upper/lower electrode striking conducting electric current, through tower ground connection, play lightning protection function.
The energy-conservation connector box of Optical Fiber composite overhead Ground Wire is to take following technical scheme to realize:
The energy-conservation connector box of Optical Fiber composite overhead Ground Wire has upper cartridge body and lower box body, between upper cartridge body and lower box body, composite hollow insulator is installed, between the upper flange at composite hollow insulator two ends and lower flange, the discharging gap device is installed, the discharging gap device comprises top electrode and bottom electrode, bottom electrode is provided with the striking projection, and distance is 5~7mm between the striking projection of top electrode and bottom electrode; Optical Fiber composite overhead Ground Wire optical cable fixing clamper one is housed on upper cartridge body, enters place, cable hole at upper cartridge body skirt one, rubber blanket one and hold-down nut one are housed; Enter inside, cable hole at upper cartridge body, rubber cone one and nut one are housed.In upper cartridge body inside optical fiber memory storage one is housed, optical fiber memory storage one comprises fine plate of dish and the fine cover plate of dish; On the top of upper cartridge body O-ring seal one and loam cake are installed; In composite hollow insulator inside, be coated with fiber unit, insulating medium is filled in all the other spaces.O-ring seal three is installed between the upper flanges of upper cartridge body and composite hollow insulator.
At lower box body Optical Fiber composite overhead Ground Wire optical cable fixing clamper two is housed, enters place, cable hole at lower box body skirt two, rubber blanket two and hold-down nut two are housed; Enter inside, cable hole at lower box body, rubber cone two and nut two are housed.In lower box body inside optical fiber memory storage two is housed, the optical fiber memory storage comprises fine plate of dish and the fine cover plate of dish; In the lower box body bottom surface O-ring seal two and mounting seat are housed.Between the following end flanges of lower box body and composite hollow insulator, O-ring seal four is installed.
When the energy-conservation connector box of Optical Fiber composite overhead Ground Wire uses, can install the lower box body leading in cable earlier, and with the fiber unit welding of centre; Again the upper cartridge body leading in cable is fixed, finished sealing and install, fused fiber splice, last, O-ring seal is installed, build loam cake.
Optical Fiber composite overhead Ground Wire penetrates into cable conduit, and clamp with Optical Fiber composite overhead Ground Wire optical cable fixing clamper one, in the upper cartridge body on top, continue, leave in the optical fiber memory storage one with the pre-buried fiber unit that is applied in the energy-conservation connector box of Optical Fiber composite overhead Ground Wire; The other end continues with identical method, and leaves in the lower end optical fiber memory storage two.OPGW optical is to the insulation of all fronts road during operate as normal, and when be struck by lightning OPGW or line fault caused occurring the transient state high pressure on the OPGW, OPGW then passed through top electrode, bottom electrode, striking projection striking conducting electric current ground connection.Top electrode, bottom electrode clearance distance can be according to the electric pressure adjustment of transmission line of electricity.When transmission line of electricity normally moves, can generate an electromagnetic field around the lead, can not form backflow between OPGW, shaft tower and the earth, significantly reduce the electric energy loss that transmission line of electricity produces.Can reduce OPGW greatly and suffer lightning strike probability,, and then have positive effect building " energy-saving, environment-friendly type " transmission line of electricity for electric system brings huge economic benefit.
The energy-conservation connector box of Optical Fiber composite overhead Ground Wire is simple in structure, and integral sealing is reliable, the mechanical property height, and decay resistance is superior, operation, easy to maintenance.
The energy-conservation connector box structure of Optical Fiber composite overhead Ground Wire has upper and lower box body, middle connection composite hollow insulator, enters the cable hole, goes out cable hole, packoff, seal element and mounting seat.The space of fiber unit does not need to irritate at the scene oil, and filled media is installed in advance in factory, alleviates on-the-spot workload, and sealing is reliable.Under the prerequisite that guarantees the OPGW properties of optical fiber cable, adopt the graded insulation single-point grounding, reduce the induction current loss that OPGW produces by tower ground connection, when being struck by lightning, by top electrode, bottom electrode, striking projection striking conducting electric current through tower ground connection, plays lightning protection function.
The present invention to reduce the ground wire electric energy loss, reaches energy-conservation purpose owing to adopt graded insulation single-point grounding mode.Because adopt the energy-conservation connector box of Optical Fiber composite overhead Ground Wire of the present invention, OPGW optical plays the double action of lightning conducter and communication port.
Description of drawings
Below with reference to accompanying drawing invention is described further.
Fig. 1 is the energy-conservation connector box one-piece construction of an Optical Fiber composite overhead Ground Wire synoptic diagram.
Fig. 2 is upper cartridge body, the discharging gap scheme of installation of the energy-conservation connector box of Optical Fiber composite overhead Ground Wire.
Fig. 3 is composite hollow insulator, fiber unit, the filling insulating medium synoptic diagram of the energy-conservation connector box of Optical Fiber composite overhead Ground Wire.
Embodiment
With reference to accompanying drawing 1,2,3, the energy-conservation connector box of Optical Fiber composite overhead Ground Wire has upper cartridge body 3 and lower box body 19, between upper cartridge body 3 and lower box body 19, composite hollow insulator 17 is installed, between the upper flange 4 at composite hollow insulator 17 two ends and lower flange 29, the discharging gap device is installed, the discharging gap device comprises top electrode 5 and bottom electrode 6, bottom electrode 6 is provided with striking projection 30, and distance is 5~7mm between the striking projection 30 of top electrode 5 and bottom electrode 6; Optical Fiber composite overhead Ground Wire optical cable fixing clamper 1 is housed on upper cartridge body 3, enters place, cable hole at upper cartridge body 3 skirt 1, rubber blanket 1 and hold-down nut 1 are housed; Enter inside, cable hole at upper cartridge body 3, rubber cone 1 and nut 1 are housed.In upper cartridge body 3 inside optical fiber memory storage 1 is housed, optical fiber memory storage 1 comprises fine plate of dish and the fine cover plate of dish; O-ring seal 1 and loam cake 1 are installed on the top of upper cartridge body 3; In composite hollow insulator 17 inside, be coated with fiber unit 24, insulating medium 23 is filled in all the other spaces.Insulating medium 23 can adopt silica gel etc.
Described upper cartridge body 3 adopts upper flanges 4 to be connected with composite hollow insulator 17.Between the upper flanges 4 of upper cartridge body 3 and composite hollow insulator 17, O-ring seal 3 16 is installed.
At lower box body 19 Optical Fiber composite overhead Ground Wire optical cable fixing clamper 27 is housed, enters place, cable hole at lower box body 19 skirt 28, rubber blanket 29 and hold-down nut 2 28 are housed; Enter inside, cable hole at lower box body 19, rubber cone 2 10 and nut 2 27 are housed.In lower box body 19 inside optical fiber memory storage 2 20 is housed, optical fiber memory storage 2 20 comprises fine plate of dish and the fine cover plate of dish; In lower box body 19 bottom surfaces O-ring seal 2 21 and base 22 are housed.
Described lower box body 19 adopts down with composite hollow insulator 17, and end flanges 29 is connected.Between the following end flanges 29 of lower box body 19 and composite hollow insulator 17, O-ring seal 4 18 is installed.
Described Optical Fiber composite overhead Ground Wire (OPGW) optical cable fixing clamper 1 and Optical Fiber composite overhead Ground Wire optical cable fixing clamper 27 adopt whole parallel groove clamp, are suitable for cable footpath scope and are not more than Φ 20mm, are not easy to produce point discharge;
Owing between the upper flange 4 at composite hollow insulator 17 two ends and lower flange 29, top electrode 5 and bottom electrode 6 are installed, reduce the transmission line of electricity electric energy loss, the assurance electricity function index; Owing between loam cake 1 and the upper cartridge body 3 O-ring seal 1 is installed, have waterproof construction, reduce the possibility that water enters the upper cartridge body sealing surface.Owing between the upper flanges 4 of upper cartridge body 3 and composite hollow insulator 17, O-ring seal 3 16 is installed; Between the following end flanges 29 of lower box body 19 and composite hollow insulator 17, O-ring seal 4 18 is installed; In lower box body 19 bottom surfaces O-ring seal 2 21 and base 22 are housed, good airproof performance can prevent that sealing enters the energy-conservation connector box of Optical Fiber composite overhead Ground Wire.
Described top electrode 5 and bottom electrode 6 adopt the steel part material to make, and described top electrode 5 and bottom electrode 6 ends are taper shape or circular bar shape.
Claims (8)
1. energy-conservation connector box of Optical Fiber composite overhead Ground Wire, it is characterized in that having upper cartridge body and lower box body, between upper cartridge body and lower box body, composite hollow insulator is installed, between the upper flange at composite hollow insulator two ends and lower flange, the discharging gap device is installed, the discharging gap device comprises top electrode and bottom electrode, and bottom electrode is provided with the striking projection; Optical Fiber composite overhead Ground Wire optical cable fixing clamper one is housed on upper cartridge body, enters place, cable hole at upper cartridge body skirt one, rubber blanket one and hold-down nut one are housed; Enter inside, cable hole at upper cartridge body, rubber cone one and nut one are housed, optical fiber memory storage one is housed in upper cartridge body inside; On the top of upper cartridge body O-ring seal one and loam cake are installed; In composite hollow insulator inside, be coated with fiber unit, insulating medium is filled in all the other spaces;
At lower box body Optical Fiber composite overhead Ground Wire optical cable fixing clamper two is housed, enters place, cable hole at lower box body skirt two, rubber blanket two and hold-down nut two are housed; Enter inside, cable hole at lower box body, rubber cone two and nut two are housed, optical fiber memory storage two is housed in lower box body inside; In the lower box body bottom surface O-ring seal two and mounting seat are housed.
2. the energy-conservation connector box of Optical Fiber composite overhead Ground Wire according to claim 1 is characterized in that distance is 5~7mm between the striking projection of described top electrode and bottom electrode.
3. the energy-conservation connector box of Optical Fiber composite overhead Ground Wire according to claim 1 is characterized in that described optical fiber memory storage one and optical fiber memory storage two comprise fine plate of dish and the fine cover plate of dish.
4. the energy-conservation connector box of Optical Fiber composite overhead Ground Wire according to claim 1 is characterized in that described upper cartridge body and composite hollow insulator adopt upper flanges to be connected, and are equipped with O-ring seal three between the upper flanges of upper cartridge body and composite hollow insulator.
5. the energy-conservation connector box of Optical Fiber composite overhead Ground Wire according to claim 1, end flanges is connected to it is characterized in that adopting described lower box body and composite hollow insulator down, between the following end flanges of lower box body and composite hollow insulator O-ring seal four is installed.
6. the energy-conservation connector box of Optical Fiber composite overhead Ground Wire according to claim 1 is characterized in that described Optical Fiber composite overhead Ground Wire optical cable fixing clamper one and Optical Fiber composite overhead Ground Wire optical cable fixing clamper two adopt whole parallel groove clamp.
7. the energy-conservation connector box of Optical Fiber composite overhead Ground Wire according to claim 1 is characterized in that described top electrode and bottom electrode end are taper shape or circular bar shape.
8. the energy-conservation connector box of Optical Fiber composite overhead Ground Wire according to claim 1 is characterized in that described top electrode and bottom electrode adopt the steel part material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010597740XA CN102033279B (en) | 2010-12-20 | 2010-12-20 | Optical fiber composite aerial earth wire (OPGW) energy-saving joint box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010597740XA CN102033279B (en) | 2010-12-20 | 2010-12-20 | Optical fiber composite aerial earth wire (OPGW) energy-saving joint box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102033279A true CN102033279A (en) | 2011-04-27 |
| CN102033279B CN102033279B (en) | 2012-05-09 |
Family
ID=43886414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010597740XA Expired - Fee Related CN102033279B (en) | 2010-12-20 | 2010-12-20 | Optical fiber composite aerial earth wire (OPGW) energy-saving joint box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102033279B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394157A (en) * | 2011-10-24 | 2012-03-28 | 天津市电力公司 | Jumper wire connection insulator |
| CN102393554A (en) * | 2011-11-17 | 2012-03-28 | 江东金具设备有限公司 | High voltage isolation insulation optical cable joint box |
| CN103323925A (en) * | 2013-06-13 | 2013-09-25 | 国家电网公司 | Terminal connector box device for 500kV optical fiber composition phase conductor |
| CN103336342A (en) * | 2013-06-13 | 2013-10-02 | 国家电网公司 | Intermediate joint box device for 500 kV optical fiber composition phase conductor |
| CN106786315A (en) * | 2016-12-31 | 2017-05-31 | 中国能源建设集团山西省电力勘测设计院有限公司 | The earthing mechanism of the OPGW on transformer station's outlet framework |
| CN108008510A (en) * | 2017-12-27 | 2018-05-08 | 国网河南省电力公司许昌供电公司 | A zinc oxide pressure limiting device |
| CN112379499A (en) * | 2020-12-04 | 2021-02-19 | 国网湖北省电力有限公司孝感供电公司 | A kind of overhead optical cable connection installation device and method |
| CN113740981A (en) * | 2020-05-27 | 2021-12-03 | 贵州电网有限责任公司 | Adjustable lightning-arrest optical cable joint box |
| CN118363128A (en) * | 2024-06-19 | 2024-07-19 | 江东金具设备有限公司 | Optical-electric separation device and optical-electric separation connection system for optical fiber composite overhead ground wire |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0737250U (en) * | 1993-12-22 | 1995-07-11 | 正信 矢継 | Winter mask |
| JP2008233695A (en) * | 2007-03-22 | 2008-10-02 | Chugoku Electric Power Co Inc:The | OPGW connection box and OPGW connection method |
| CN101315451A (en) * | 2007-06-03 | 2008-12-03 | 江苏通光信息有限公司 | On-line flexible splice closure of optical fiber composite overhead ground wire |
| CN201229426Y (en) * | 2008-07-23 | 2009-04-29 | 茹志康 | Optical fiber composite overhead ground wire optical cable coupling box |
| CN101625446A (en) * | 2009-08-06 | 2010-01-13 | 江东金具设备有限公司 | Transition joint box of full tensile optical fiber composition phase conductor |
| CN201909868U (en) * | 2010-12-20 | 2011-07-27 | 江东金具设备有限公司 | OPGW (Optical Fiber Composite Overhead Ground Wire) energy-saving connector box |
-
2010
- 2010-12-20 CN CN201010597740XA patent/CN102033279B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0737250U (en) * | 1993-12-22 | 1995-07-11 | 正信 矢継 | Winter mask |
| JP2008233695A (en) * | 2007-03-22 | 2008-10-02 | Chugoku Electric Power Co Inc:The | OPGW connection box and OPGW connection method |
| CN101315451A (en) * | 2007-06-03 | 2008-12-03 | 江苏通光信息有限公司 | On-line flexible splice closure of optical fiber composite overhead ground wire |
| CN201229426Y (en) * | 2008-07-23 | 2009-04-29 | 茹志康 | Optical fiber composite overhead ground wire optical cable coupling box |
| CN101625446A (en) * | 2009-08-06 | 2010-01-13 | 江东金具设备有限公司 | Transition joint box of full tensile optical fiber composition phase conductor |
| CN201909868U (en) * | 2010-12-20 | 2011-07-27 | 江东金具设备有限公司 | OPGW (Optical Fiber Composite Overhead Ground Wire) energy-saving connector box |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394157A (en) * | 2011-10-24 | 2012-03-28 | 天津市电力公司 | Jumper wire connection insulator |
| CN102393554A (en) * | 2011-11-17 | 2012-03-28 | 江东金具设备有限公司 | High voltage isolation insulation optical cable joint box |
| CN102393554B (en) * | 2011-11-17 | 2013-02-27 | 江东金具设备有限公司 | High voltage isolation insulation optical cable joint box |
| CN103323925A (en) * | 2013-06-13 | 2013-09-25 | 国家电网公司 | Terminal connector box device for 500kV optical fiber composition phase conductor |
| CN103336342A (en) * | 2013-06-13 | 2013-10-02 | 国家电网公司 | Intermediate joint box device for 500 kV optical fiber composition phase conductor |
| CN106786315A (en) * | 2016-12-31 | 2017-05-31 | 中国能源建设集团山西省电力勘测设计院有限公司 | The earthing mechanism of the OPGW on transformer station's outlet framework |
| CN108008510A (en) * | 2017-12-27 | 2018-05-08 | 国网河南省电力公司许昌供电公司 | A zinc oxide pressure limiting device |
| CN113740981A (en) * | 2020-05-27 | 2021-12-03 | 贵州电网有限责任公司 | Adjustable lightning-arrest optical cable joint box |
| CN113740981B (en) * | 2020-05-27 | 2024-05-14 | 贵州电网有限责任公司 | Adjustable lightning-protection optical cable joint box |
| CN112379499A (en) * | 2020-12-04 | 2021-02-19 | 国网湖北省电力有限公司孝感供电公司 | A kind of overhead optical cable connection installation device and method |
| CN118363128A (en) * | 2024-06-19 | 2024-07-19 | 江东金具设备有限公司 | Optical-electric separation device and optical-electric separation connection system for optical fiber composite overhead ground wire |
| WO2025260729A1 (en) * | 2024-06-19 | 2025-12-26 | 江东金具设备有限公司 | Photoelectric isolation device and photoelectric isolation splicing system for optical fiber composite overhead ground wire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102033279B (en) | 2012-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102033279B (en) | Optical fiber composite aerial earth wire (OPGW) energy-saving joint box | |
| CN203481774U (en) | Cable joint | |
| CN201909868U (en) | OPGW (Optical Fiber Composite Overhead Ground Wire) energy-saving connector box | |
| CN202888523U (en) | Whole shielding metal armored cable connecting plug | |
| CN201430401Y (en) | Position-changing and connection system for tower and ground wires | |
| CN203659557U (en) | Line type fixed clearance metal oxide arrester | |
| CN201732672U (en) | Harmonic elimination type voltage transformer | |
| CN220155304U (en) | Insulating device of dry-type high-voltage bushing | |
| CN218414238U (en) | Integrative transformer of plug-in type arrester, cable plug-in terminal | |
| CN202453559U (en) | Ground wire deicing sectioned insulating optical cable joint box | |
| CN202816775U (en) | Load switch outer connection wire sealing assembly | |
| CN202127229U (en) | Cable joint | |
| CN203339559U (en) | Multifunctional fixing sealing assembly with lower-grounding | |
| CN201430402Y (en) | Connection system for tower and ground wires | |
| CN2864716Y (en) | Terminal joint case for optical fiber composite phase wire | |
| CN102565975B (en) | Ground wire ice melting graded insulation cable joint box | |
| CN202512973U (en) | 550kV basin type insulator insert | |
| CN202196625U (en) | Three-phase one-tank type metal flange disc insulator | |
| CN201910593U (en) | Pluggable sleeve used for medium-pressure inflatable air tank | |
| CN205595169U (en) | Transformer be convenient for installation lightning arrester | |
| CN203660484U (en) | Back-connection-type lightning arrester | |
| CN207588261U (en) | A kind of gas-insulated enclosed switchgear | |
| CN203760988U (en) | Pipe type energy-saving seal low-pressure branch bus duct system | |
| CN205753320U (en) | A kind of overvoltage protection for power system combines lightning arrester | |
| CN203118688U (en) | Arrester insulating cylinder used for solid insulation ring-network cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20181220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |