CN112635120A - Secondary anti-falling device for power transmission and transformation cable - Google Patents
Secondary anti-falling device for power transmission and transformation cable Download PDFInfo
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- CN112635120A CN112635120A CN202011146799.7A CN202011146799A CN112635120A CN 112635120 A CN112635120 A CN 112635120A CN 202011146799 A CN202011146799 A CN 202011146799A CN 112635120 A CN112635120 A CN 112635120A
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- triangular seat
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
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Abstract
The invention provides a secondary anti-falling device for a power transmission and transformation cable, which comprises a triangular seat, a fixing ring, an insulation protection device, an indication trigger air rod, a broken wire trigger wheel and a sulfur hexafluoride tank, wherein the triangular seat is made of hard plastic insulation materials, the interior of the triangular seat is of a hollow structure, a GPS (global positioning system) annunciator is arranged at the center of the triangular seat, a broken wire indicator lamp is arranged at the middle section of a triangle of the triangular seat, the GPS annunciator 101 is connected with the broken wire indicator lamp 102 in parallel, the top ends of three corners of the triangular seat are fixedly connected with movable shafts, the top ends of the movable shafts are fixedly connected with the fixing ring, the tail end of the fixing ring is fixedly connected with a fixing plate, the interior of the fixing ring is of a hollow structure, the bearing inside of the fixing ring is connected with the insulation protection device, and a protective net is arranged in the insulation anti-summer heat device, the secondary anti, causing great safety problems for personnel and livestock.
Description
Technical Field
The invention relates to the field of power transmission and transformation cables, in particular to a secondary anti-falling device for the power transmission and transformation cables.
Background
5261 the conductor drop point is 20 meters inside the ground when a high voltage 2113 line is encountered to drop the ground, prohibiting personnel from entering 4102. If the distance is within the range, the user should jump with one or two feet towards the disconnection point of the electric wire by the back 1653 and leave the scene. Regarding the safe distance between the high-voltage line and the residential building, China has no clear distance regulation, but has a related convertible standard that the magnetic induction intensity of the position where the residential building is located is less than 100 micro-Tesla, so that the construction standard is met. The safe distance of a high-voltage line below 1kV is 4 meters through measurement and calculation; the safe distance of the 1-10kV high-voltage line is 6 meters; the safe distance of the 35-110kV high-voltage line is 8 meters; the safe distance of the 154-220kV high-voltage line is 10 meters; the safety distance along the 350-500kV high line is 15 meters.
Disclosure of Invention
In order to solve the technical problems, the invention provides a secondary anti-falling device for a power transmission and transformation cable, which aims to solve the problem that personnel and livestock have great safety due to the fact that a high-voltage wire falls to the ground after being broken to generate a dangerous range within a range of 10-20 m of a falling point radius.
The invention relates to a secondary anti-falling device for a power transmission and transformation cable, which is achieved by the following specific technical means: the utility model provides a power transmission and transformation cable conductor secondary anti falling device, includes the triangular seat, solid fixed ring, insulating protector, instructs trigger gas pole, broken string trigger wheel, sulfur hexafluoride jar, the triangular seat is the insulating material of hard moulding, and the inside hollow structure that is of triangular seat, triangular seat center department is equipped with the GPS signal ware, and is equipped with the broken string pilot lamp in triangular seat triangle middle section, the GPS signal ware is parallelly connected with the broken string pilot lamp, the three angle tip fixedly connected with loose axle of triangular seat department, and loose axle top fixedly connected with solid fixed ring, and the terminal fixedly connected with fixed plate of solid fixed ring, gu fixed ring inside is hollow structure, and solid fixed ring inner bearing is connected with insulating protector, be equipped with the protection network in the insulating heatstroke prevention device, and utilize the protection network can form the protection network management with another solid fixed ring fixed connection.
Furthermore, sulfur hexafluoride tanks are fixedly connected to two sides of the three corners of the triangular seat, air rod grooves are formed in the inner sides of the sulfur hexafluoride tanks, inflation valves are arranged at the tail ends of the air rod grooves, ventilation rods are movably connected in the air rod grooves, the tail ends of the ventilation rods are fixedly connected with indication trigger air rods, and the tail ends of the indication trigger air rods are connected with broken line trigger wheels in a meshed mode.
Further, instruct that to trigger that the gas pole is inside to be hollow structure, and instruct to trigger gas pole both sides fixedly connected with air pin, the air pin side is equipped with the air breather, instruct to trigger gas pole top and be equipped with the drive tooth's socket, and the drive tooth's socket triggers the wheel meshing with the broken string and is connected, fixedly connected with one-way axle in the tooth both sides inner wall in the drive tooth's socket, the terminal fixedly connected with of one-way axle seals the gas board.
Further, the broken string triggers the wheel and passes through the both sides of fixing bearing fixed connection in triangle seat triangle top, fixing bearing inboard bearing is connected with the runner, and runner axle center department has seted up the pole opening, the runner department of pole opening part is equipped with the wheel internal thread, and the internal gearing of pole opening is connected with the drive and connects the gas pole.
Further, the inside hollow structure that is of gas pole is connected in the drive, and the drive is connected the gas pole end and is equipped with the air guide mouth, the drive is connected the gas pole middle section and is equipped with the pole screw thread, and the drive is connected the gas pole top and is equipped with and drive the tooth, drive the inside hollow that is of tooth, and drive the tooth bottom and drive and be connected the gas pole and link up, it is equipped with the extension tooth to drive the tooth both sides, and extends the inboard one-way spring axle of fixedly connected with of tooth wall, the inboard fixedly connected with valve of one-way spring axle.
Further, the inside bearing of insulating protector is connected with the protection network spool, and the protection network spool is rolled up there is the protection network, the wire way has been seted up at insulating protector top, and is equipped with the air inlet in insulating protector one end axle center department, the protection network extends from the wire way and stretches out and solid fixed ring bottom fixed connection with another.
Further, the protection network is made of A-level flame-retardant rubber, the inside of the protection network is of a hollow structure, and air outlets are formed in the inner side of the protection network.
Has the advantages that:
(1) through being equipped with the triangle seat and solid fixed ring, fixed the separately effect that realizes the cable intertwine with the cable.
(2) Through being equipped with the broken string and triggering the wheel, when the cable breaks, the cable droops down and drives the runner and rotate under the effect of gravity, makes its runner instruct to trigger the gas pole and put through the broken string pilot lamp, and put through the sulfur hexafluoride jar.
(3) Through being equipped with insulating protector, will make the protection network tighten up and form a sealed space when the cable fracture is flagging to the inside venthole of protection network is with other the pouring of sulfur hexafluoride wherein, realizes preventing to fall and to the effect of inside insulation cable parcel.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the triangular base structure of the present invention.
FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention.
FIG. 4 is a schematic view of a connection structure of an indicating trigger gas lever and a sulfur hexafluoride tank of the case body.
FIG. 5 is an enlarged view of the case of FIG. 4B.
Fig. 6 is a schematic diagram of the explosion structure of the case wire-breaking trigger wheel of the invention.
FIG. 7 is a schematic view of the structure of the box runner of the present invention.
FIG. 8 is a schematic view of the driving connection air rod structure of the present invention.
FIG. 9 is an enlarged view of the structure of FIG. 6 at C according to the present invention.
Fig. 10 is a schematic structural view of the insulation protection device of the present invention.
Fig. 11 is an enlarged view of the structure shown in fig. 10 at D according to the present invention.
In fig. 1 to 11, the correspondence between the component names and the reference numbers is:
1-triangular seat, 101-GPS (global positioning system) annunciator, 102-broken wire indicator light, 2-fixed ring, 201-movable shaft, 202-fixed plate, 203-fixed hole, 3-insulation protective device, 301-air inlet, 302-net groove, 303-protective net reel, 304-protective net, 305-air outlet hole, 4-indicating trigger air rod, 401-air rod, 402-air nozzle, 403-drive tooth slot, 404-one-way shaft, 405-sealing air plate, 5-broken wire trigger wheel, 501-fixed bearing, 502-rotating wheel, 503-drive connecting air rod, 504-air guide nozzle, 505-drive tooth, 506-rod thread, 507-wheel internal thread, 508-extension tooth, 509-one-way spring shaft, 510-valve thread, 509-valve, 511-rod opening, 6-sulfur hexafluoride tank, 601-gas rod groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example (b):
as shown in figures 1 to 11: a secondary anti-falling device for power transmission and transformation cables comprises a triangular seat 1, a fixing ring 2, an insulation protection device 3, an indication trigger gas rod 4, a broken wire trigger wheel 5 and a sulfur hexafluoride tank 6, wherein the triangular seat 1 is made of hard plastic insulating material, the interior of the triangular seat 1 is of a hollow structure, a GPS signal device 101 is arranged at the center of the triangular seat 1, a broken line indicator lamp 102 is arranged at the middle triangular section of the triangular seat 1, the GPS signal device 101 is connected with the broken line indicator lamp 102 in parallel, movable shafts 201 are fixedly connected at the top ends of three corners of the triangular seat 1, the top end of the movable shaft 201 is fixedly connected with a fixed ring 2, the tail end of the fixed ring 2 is fixedly connected with a fixed plate 202, the interior of the fixed ring 2 is of a hollow structure, and the inner bearing of the fixed ring 2 is connected with an insulation protection device 3, a protective net 304 is arranged in the insulation heatstroke prevention device 3, and the protective net 304 can be fixedly connected with another fixed ring 2 to form a protective net pipe.
The sulfur hexafluoride tank 6 is fixedly connected to two sides of the three corners of the triangular seat 1, the air rod groove 601 is formed in the inner side of the sulfur hexafluoride tank 6, the inflation valve is arranged at the tail end of the air rod groove 601, the ventilation rod 401 is movably connected to the air rod groove 601, the tail end of the ventilation rod 401 is fixedly connected with the indication trigger air rod 4, and the tail end of the indication trigger air rod 4 is connected with the broken line trigger wheel 5 in a meshed mode. Sulfur hexafluoride tanks 6 on two sides of three corners of the triangular seat 1 are respectively independent and provide insulating protective gas for cables at corresponding positions through the indicating trigger gas rod 4 and the broken line trigger wheel 5.
Wherein, instruct to trigger that the gas pole 4 is inside to be hollow structure, and instruct to trigger 4 both sides fixedly connected with air bars 401 of gas pole, air bars 401 side is equipped with breather 402, instruct to trigger 4 top of gas pole to be equipped with drive tooth's socket 403, and drive tooth's socket 403 is connected with broken string trigger wheel 5 meshing, fixedly connected with one-way shaft 404 in the tooth both sides inner wall in drive tooth's socket 403, the terminal fixedly connected with of one-way shaft 404 seals gas board 405. When the cable is broken, the cable slides on the broken line trigger wheel 5 to enable the broken line trigger wheel to rotate, the indication trigger air rod 4 meshed with the broken line trigger wheel 5 moves outwards when the broken line trigger wheel 5 rotates, so that the ventilation nozzle 402 on the side surface of the ventilation rod 401 is communicated with the sulfur hexafluoride tank 6 to form an air supply pipeline, the one-way shaft 404 and the sealing air plate 405 ensure that air does not flow back, and the top of the indication trigger air rod 4 triggers the broken line indicator lamp 102 to work and flicker.
The broken wire trigger wheel 5 is fixedly connected to two sides of the top end of the triangle of the triangular seat 1 through a fixed bearing 501, a rotating wheel 502 is connected to the inner side of the fixed bearing 501 through a bearing, a rod opening 511 is formed in the axis of the rotating wheel 502, an internal wheel thread 507 is formed in the rotating wheel 502 at the position of the rod opening 511, and a driving connection air rod 503 is in inner engagement connection with the rod opening 511. The rotating wheel 502 is connected with the two sides of the triangular top end of the triangular seat 1 through the fixed bearing 501, and the internal wheel thread 502 inside the rotating wheel 502 drives the driving connection air rod 503 to rotate and extend when the rotating wheel 502 rotates.
Wherein, the inside hollow structure that is of drive connection gas pole 503, and drive connection gas pole 503 end is equipped with air guide mouth 504, drive connection gas pole 503 middle section is equipped with pole screw thread 506, and drive connection gas pole 503 top is equipped with drive tooth 505, drive tooth 505 is inside to be hollow, and drives tooth 505 bottom and drive connection gas pole 503 and link up, drive tooth 505 both sides are equipped with and extend tooth 508, and extend the inboard one-way spring axle 509 of fixedly connected with of tooth wall of tooth 508, the inboard fixedly connected with valve 510 of one-way spring axle 509. When the rotating wheel 502 rotates, the internal wheel thread 502 inside the rotating wheel drives the driving connection air rod 503 to rotate and extend, and finally the air guide nozzle 504 at the end of the driving connection air rod 503 is connected with the insulation protection device 3 in a penetrating manner to form an air supply pipeline, wherein the extension teeth 508 are in a normally closed state when the extension teeth 508 are not in a meshed state due to the one-way spring shaft 509 and the air valve 510 inside the extension teeth 508.
Wherein, the inside bearing of insulating protector 3 is connected with protection network spool 303, and protection network 304 has been rolled up to protection network spool 303, and the wire way 302 has been seted up at insulating protector 3 top, and is equipped with air inlet 301 in insulating protector 3 one end axle center department, and protection network 304 extends from wire way 302 and stretches out and 2 bottom fixed connection of another solid fixed ring. The air guide nozzle 504 at the end of the driving connection air rod 503 is connected with the air inlet 301 in the insulation protection device 3 in a penetrating way to form an air supply pipeline, and the protective net 304 forms a circular wrapping net when the fixing rings 2 are combined.
The material of the protective net 304 is a grade a flame retardant rubber, the inside of the protective net 304 is a hollow structure, and the inner side of the protective net 304 is provided with air outlets 305. The A-level flame retardant rubber can prevent sparks generated when a cable is broken from igniting the protective net 304 and prevent sparks from falling to cause fire, and the air holes 305 in the A-level flame retardant rubber convey sulfur hexafluoride gas to the broken position to achieve an insulating effect.
The working principle is as follows: firstly, the fixing ring 2 is opened according to the thickness of the cable, the cable is wrapped in the fixing ring 2, the fixing ring 2 is fixed, the protective net 304 in the insulating protection device 3 in the fixing ring 2 is pulled out, and the cable is wrapped in the protective net 304 by being fixedly connected with the bottom of the other fixing ring 2.
When the cables shake in severe weather such as strong wind, the triangular seat 1 keeps enough safety distance between the cables to prevent short circuit caused by mutual contact.
When the cable is cracked unfortunately, the cable falls under the action of the gravity, the cable and the disconnection triggering wheel 5 slide in a friction mode to enable the cable to rotate when the cable falls, the disconnection triggering wheel 5 rotates, the indication triggering air rod 4 meshed with the disconnection triggering wheel moves outwards to enable the air nozzle 402 on the side face of the air rod 401 to be communicated with the sulfur hexafluoride tank 6 to form an air supply pipeline, the air guide nozzle 504 at the tail end of the driving connecting air rod 503 is communicated with the air inlet 301 in the insulation protection device 3 to form the air supply pipeline, the one-way shaft 404 and the sealing air plate 405 ensure that air does not flow back, the top of the indication triggering air rod 4 triggers the disconnection indicating lamp 102 to flicker in work, and meanwhile the GPS signal device 101 sends a fault position to a power supply company.
Meanwhile, the falling cable extrudes and contracts the protective net 303 in the insulation protection device 3 to form a sealed space, and simultaneously the air guide nozzle 504 at the tail end of the driving connection air rod 503 is in through connection with the air inlet 301 in the insulation protection device 3 to form an air supply pipeline to convey sulfur hexafluoride gas to the interior of the protective net 304 to enhance the insulation effect.
Claims (7)
1. The utility model provides a power transmission and transformation cable conductor secondary anti falling device, includes three corner seats (1), solid fixed ring (2), insulating protector (3), instructs to trigger gas pole (4), broken string trigger wheel (5), sulfur hexafluoride jar (6), its characterized in that: the triangular seat (1) is made of hard plastic insulation materials, the interior of the triangular seat (1) is of a hollow structure, a GPS (global positioning system) signal device (101) is arranged at the center of the triangular seat (1), and a disconnection indicating lamp (102) is arranged at the middle section of the triangle of the triangular seat (1), the GPS signal device (101) is connected with the disconnection indicating lamp (102) in parallel, the top ends of three angles of the triangular seat (1) are fixedly connected with movable shafts (201), the top end of the movable shaft (201) is fixedly connected with a fixed ring (2), the tail end of the fixed ring (2) is fixedly connected with a fixed plate (202), the interior of the fixed ring (2) is of a hollow structure, and the inner bearing of the fixed ring (2) is connected with an insulating protective device (3), a protective net (304) is arranged in the insulating heatstroke prevention device (3), and the protective net (304) can be fixedly connected with another fixed ring (2) to form a protective net pipe.
2. The power transmission and transformation cable secondary anti-drop device of claim 1, wherein: the sulfur hexafluoride tank (6) is fixedly connected to two inner sides of three corners of the triangular seat (1), the air rod groove (601) is formed in the inner side of the sulfur hexafluoride tank (6), the inflating valve is arranged at the tail end of the air rod groove (601), the air rod groove (601) is internally and movably connected with an air vent rod (401), the tail end of the air vent rod (401) is fixedly connected with an indication trigger air rod (4), and the tail end of the indication trigger air rod (4) is meshed with a broken line trigger wheel (5).
3. The power transmission and transformation cable secondary anti-drop device of claim 2, wherein: indicate to trigger gas pole (4) inside and be hollow structure, and instruct to trigger gas pole (4) both sides fixedly connected with ventilation rod (401), ventilation rod (401) side is equipped with air breather (402), it is equipped with drive tooth's socket (403) to indicate to trigger gas pole (4) top, and drive tooth's socket (403) and broken string trigger wheel (5) meshing are connected, fixedly connected with one-way axle (404) in the tooth both sides inner wall in drive tooth's socket (403), the terminal fixedly connected with of one-way axle (404) seals gas board (405).
4. The power transmission and transformation cable secondary anti-drop device of claim 3, wherein: broken string trigger wheel (5) are through fixing bearing (501) fixed connection in the both sides on triangular seat (1) triangle top, fixing bearing (501) inboard bearing is connected with runner (502), and runner (502) axle center department has seted up pole opening (511), runner (502) department of pole opening (511) department is equipped with round internal thread (507), and pole opening (511) inner gearing is connected with drive connection gas pole (503).
5. The power transmission and transformation cable secondary anti-drop device of claim 4, wherein: the inside hollow structure that is of air lever (503) is connected in the drive, and drive connection air lever (503) end is equipped with air guide mouth (504), drive connection air lever (503) middle section is equipped with pole screw thread (506), and drive connection air lever (503) top is equipped with drive tooth (505), drive tooth (505) inside is hollow, and drives tooth (505) bottom and drive connection air lever (503) and link up, drive tooth (505) both sides are equipped with extension tooth (508), and extend tooth (508) inboard tooth wall internal fixation and be connected with one-way spring axle (509), one-way spring axle (509) inboard fixed connection has valve (510).
6. The power transmission and transformation cable secondary anti-drop device of claim 1, wherein: insulating protector (3) inner bearing is connected with protection net reel (303), and protection net reel (303) are rolled up there is protection network (304), grooving (302) have been seted up at insulating protector (3) top, and are equipped with air inlet (301) in insulating protector (3) one end axle center department, protection network (304) extend from grooving (302) department and stretch out with another solid fixed ring (2) bottom fixed connection.
7. The power transmission and transformation cable secondary anti-drop device of claim 6, wherein: the material of the protective net (304) is A-level flame-retardant rubber, the inside of the protective net (304) is of a hollow structure, and air outlet holes (305) are formed in the inner side of the protective net (304).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011146799.7A CN112635120A (en) | 2020-10-23 | 2020-10-23 | Secondary anti-falling device for power transmission and transformation cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011146799.7A CN112635120A (en) | 2020-10-23 | 2020-10-23 | Secondary anti-falling device for power transmission and transformation cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112635120A true CN112635120A (en) | 2021-04-09 |
Family
ID=75302868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011146799.7A Withdrawn CN112635120A (en) | 2020-10-23 | 2020-10-23 | Secondary anti-falling device for power transmission and transformation cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112635120A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5494690A (en) * | 1978-01-06 | 1979-07-26 | Hitachi Cable Ltd | Breaking and fall down preventing method for the distribution wire |
| JPH0614441A (en) * | 1992-06-25 | 1994-01-21 | Furukawa Electric Co Ltd:The | Prevention method of ground fault trouble caused by overhead earth wire disconnection |
| TW200537769A (en) * | 2003-12-11 | 2005-11-16 | Electric Power Res Inst | Apparatus and method for electrically and mechanically connecting and disconnecting a power line |
| CN102306920A (en) * | 2011-08-24 | 2012-01-04 | 国网电力科学研究院 | Anti-oscillation arrangement and configuration method for phase-to-phase spacers of ultrahigh-voltage compact power transmission line |
| CN103548222A (en) * | 2011-05-24 | 2014-01-29 | 施耐德电器工业公司 | Electrical apparatus having a gas insulation containing a fluorinated compound |
| CN103986104A (en) * | 2014-05-23 | 2014-08-13 | 国家电网公司 | Anti-breakage protecting and early warning device for overhead wire with voltage of 10 kV and below |
| JP2016126978A (en) * | 2015-01-08 | 2016-07-11 | ウシオ電機株式会社 | Both end sealed short arc flashlamp |
| CN107026420A (en) * | 2016-02-02 | 2017-08-08 | 中国电力科学研究院 | A kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type |
| CN206878417U (en) * | 2017-06-01 | 2018-01-12 | 国网山西省电力公司阳泉供电公司 | Ground wire connecting tool secondary protector |
| US20180337524A1 (en) * | 2015-10-16 | 2018-11-22 | State Grid Henan Electric Power Research Institute | Rigid-collision-free transmission line spacer clamp connection structure |
| CN210693393U (en) * | 2019-08-02 | 2020-06-05 | 浙江大鹏电力设备有限公司 | Protection device for preventing overhead insulated conductor from being broken by lightning stroke |
-
2020
- 2020-10-23 CN CN202011146799.7A patent/CN112635120A/en not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5494690A (en) * | 1978-01-06 | 1979-07-26 | Hitachi Cable Ltd | Breaking and fall down preventing method for the distribution wire |
| JPH0614441A (en) * | 1992-06-25 | 1994-01-21 | Furukawa Electric Co Ltd:The | Prevention method of ground fault trouble caused by overhead earth wire disconnection |
| TW200537769A (en) * | 2003-12-11 | 2005-11-16 | Electric Power Res Inst | Apparatus and method for electrically and mechanically connecting and disconnecting a power line |
| CN103548222A (en) * | 2011-05-24 | 2014-01-29 | 施耐德电器工业公司 | Electrical apparatus having a gas insulation containing a fluorinated compound |
| CN102306920A (en) * | 2011-08-24 | 2012-01-04 | 国网电力科学研究院 | Anti-oscillation arrangement and configuration method for phase-to-phase spacers of ultrahigh-voltage compact power transmission line |
| CN103986104A (en) * | 2014-05-23 | 2014-08-13 | 国家电网公司 | Anti-breakage protecting and early warning device for overhead wire with voltage of 10 kV and below |
| JP2016126978A (en) * | 2015-01-08 | 2016-07-11 | ウシオ電機株式会社 | Both end sealed short arc flashlamp |
| US20180337524A1 (en) * | 2015-10-16 | 2018-11-22 | State Grid Henan Electric Power Research Institute | Rigid-collision-free transmission line spacer clamp connection structure |
| CN107026420A (en) * | 2016-02-02 | 2017-08-08 | 中国电力科学研究院 | A kind of semi-abruption electric number interval wire clamp conductor spacer for playing resistance type |
| CN206878417U (en) * | 2017-06-01 | 2018-01-12 | 国网山西省电力公司阳泉供电公司 | Ground wire connecting tool secondary protector |
| CN210693393U (en) * | 2019-08-02 | 2020-06-05 | 浙江大鹏电力设备有限公司 | Protection device for preventing overhead insulated conductor from being broken by lightning stroke |
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Application publication date: 20210409 |
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