CN110932211A - Bird-proof cover with drainage function for power transmission line - Google Patents
Bird-proof cover with drainage function for power transmission line Download PDFInfo
- Publication number
- CN110932211A CN110932211A CN201911071216.6A CN201911071216A CN110932211A CN 110932211 A CN110932211 A CN 110932211A CN 201911071216 A CN201911071216 A CN 201911071216A CN 110932211 A CN110932211 A CN 110932211A
- Authority
- CN
- China
- Prior art keywords
- bird
- transmission line
- drainage
- power transmission
- cover
- 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.)
- Pending
Links
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
- H02G7/00—Overhead installations of electric lines or cables
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/30—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water
- A01M29/32—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water specially adapted for birds, e.g. spikes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Birds (AREA)
- Engineering & Computer Science (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Catching Or Destruction (AREA)
Abstract
The invention relates to a bird-related fault prevention and treatment technology of a power transmission line, in particular to a bird-preventing cover with a drainage function for the power transmission line, which comprises two symmetrical cover bodies of a quasi-semicircular structure, wherein the two symmetrical cover bodies are spliced and fixed at hardware fittings at the upper end of an insulator of the power transmission line; each cover body with the similar semicircular structure symmetry comprises a semicircular disc, a drainage groove fixed on the outer edge of the semicircular disc and a baffle fixed on the outer side of the drainage groove; the notches of the drainage grooves are formed in the circumference of the outer edge 1/4 of the semicircular disc, the drainage grooves respectively extend downwards from the starting points of the disc surfaces on the two sides of the semicircular disc to the notches in a spiral mode along the outer edge, the width of each drainage groove is uniformly and gradually wide from the starting point to the notch, and the width of each drainage groove at the notches is the largest; the baffle plates are spirally downward along with the drainage grooves and have the same height; the semi-disc surface is an inclined cover surface with a downward opening and a trumpet shape, and the inclined cover surface is smooth. This anti-bird cover has overcome the shortcoming of traditional anti-bird cover, utilizes the drainage function to guarantee to protect bird droppings flashover at effective range, has the anti-fouling function concurrently, simple to operate, long service life.
Description
Technical Field
The invention belongs to the technical field of high-voltage external insulation and bird-related fault prevention and control of power transmission lines, and particularly relates to a bird-preventing cover with a drainage function for a power transmission line.
Background
In recent years, with the implementation and popularization of policies such as the continuous enhancement of environmental protection awareness and the green development of people, the ecological environment is greatly improved, so that the number of birds is continuously increased, the moving range and the frequency are continuously enlarged, the bird-related faults of a power transmission line are increasingly increased, the threat of the bird-caused faults to the power transmission line is increasingly greater, the occurrence frequency exceeds pollution flashover, and the third threat is second to the damage of lightning damage and external force. The existing bird prevention measures mainly comprise three types, namely a repellent type, a protective type and a guide type: the expelling type prevents birds from approaching the overhead line facility in modes of sound, light, space position limitation and the like, achieves the effect of bird prevention, and mainly comprises bird-preventing stabs, a sound wave bird-repelling device, a bird-preventing windmill and the like; the protection device does not drive away birds, but ensures that the activities of the birds cannot cause the fault of a power transmission facility in an insulation protection mode of the power facility, and mainly comprises a bird prevention cover, a bird prevention baffle, a large-disc-diameter umbrella group and the like; the guide class device provides more suitable habitat through the initiative for birds, avoids the circuit facility simultaneously, guarantees that birds do not stop near transmission of electricity facility, mainly including drawing bird case, artificial bird nest, artifical bird frame that draws etc..
The bird prevention cover has excellent bird prevention effect, dirt accumulation prevention effect, convenient installation and easy popularization, and is a relatively excellent bird prevention device. The traditional bird-proof cover is a horn-shaped circular curved surface with a downward opening, the downward inclination angle of the curved surface is about 5-10 degrees, bird droppings drop on the cover surface and fall from the edge along the longitude line of a dropping point, and the dropping channel is ensured to be far away from the insulator. The bird prevention cover is generally installed above a suspension insulator string of a power transmission line of 220kV or below to prevent bird droppings from contacting or approaching the edge of the insulator when falling, so that the insulator string is ensured not to be short-circuited, and the bird droppings flashover tripping fault caused by the falling of the bird droppings above the suspension insulator string is avoided. However, at the same time, bird shields also have two obvious drawbacks:
(1) due to the fact that the bird droppings have certain viscosity, a large amount of bird droppings can be accumulated on the surface of the bird prevention cover in long-term operation, and in windy and rainy days, the bird droppings can be poured greatly due to rain wash and strong wind influence, so that the insulator is polluted in a large area, along-plane flashover occurs, or the bird droppings are poured near the insulator, so that air gaps are punctured, and flashover accidents occur.
(2) The installation fixed part is in close contact with the insulator core rod, and in the long-term operation of the circuit, because the joint is made of the epoxy resin material with the harder material, the phenomenon that the composite insulator core rod is abraded under the action of wind power can be caused, so that the insulating property of the composite insulator can be reduced, and the complete structure of the insulator can be directly damaged in serious conditions.
In addition, according to the experiment of the invention, when the bird droppings drop on the disc surface, the bird droppings can directly drop along the longitude of the disc surface at the point, the dropping points of the bird droppings are random, so the dropping channel positions are random, and the possibility that the bird droppings channel drops near the lead exists, at the moment, flashover is easy to occur, namely, the 100 percent effective protection of the bird droppings flashover cannot be realized in the protection range of the traditional bird prevention cover, so that the improvement of the bird prevention cover of the power transmission line is necessary to be deeply researched.
Disclosure of Invention
The invention aims to provide a novel bird prevention cover with a drainage function.
In order to achieve the purpose, the invention adopts the technical scheme that: an anti-bird cover with a drainage function for a power transmission line comprises two cover bodies which are symmetrically of a quasi-semicircular structure and are spliced and fixed at hardware fittings at the upper end of an insulator of the power transmission line; each cover body with the similar semicircular structure symmetry comprises a semicircular disc, a drainage groove fixed on the outer edge of the semicircular disc and a baffle fixed on the outer side of the drainage groove; the notches of the drainage grooves are formed in the circumference of the outer edge 1/4 of the semicircular disc, the drainage grooves respectively extend downwards from the starting points of the disc surfaces on the two sides of the semicircular disc to the notches in a spiral mode along the outer edge, the width of each drainage groove is uniformly and gradually wide from the starting point to the notch, and the width of each drainage groove at the notches is the largest; the baffle plates are spirally downward along with the drainage grooves and have the same height; the semi-disc surface is an inclined cover surface with a downward opening and a trumpet shape, and the inclined cover surface is smooth.
In the bird shield with the drainage function for the power transmission line, an installation clamping groove is arranged at the circle center of each semicircular disc, is semicircular, and has the radius 1mm larger than the radius of hardware fittings at the upper end of insulators of the power transmission line; a buffer gasket is stuck inside the mounting clamping groove and is made of silicon rubber with the thickness of 2 mm; fixing screw holes are formed in the two sides of the mounting clamping groove and located on the diameter of the semicircular disc surface; the cover bodies with two similar semicircular structures are fixed on the hardware fitting at the upper end of the insulator of the power transmission line through the fixed mounting clamping grooves and the fixed screw holes.
In the bird prevention cover for the transmission line with the drainage function, the two cover bodies with similar semicircular structures and symmetry adopt epoxy resin materials.
In the bird-preventing cover with the drainage function for the power transmission line, the inclined cover surface is inclined downwards by an angle of 5-7 degrees; when the power transmission line is a 110kV power transmission line, the horizontal plane projection radius of the inclined cover surface is 280mm, and when the power transmission line is a 220kV power transmission line, the horizontal plane projection radius of the inclined cover surface is 370 mm.
In the above-mentioned anti-bird cover for power transmission line with drainage function, the width of the initial point of the drainage groove of the disk surfaces on both sides of the semicircular disk is 0mm, the depth is 0mm, the width of the notch is 32mm, the depth is 20mm, and the width and the depth of the drainage groove are uniformly changed from the initial point to the notch.
In the above-described bird shield for a power transmission line having a drainage function, the height of the baffle plate is 12 mm.
In foretell transmission line with drainage function is with preventing bird cover, drainage groove notch is located the centre of drainage groove, and the width is 50 mm.
The invention has the beneficial effects that: the bird-proof cover is made of epoxy resin materials, so that good insulating property and mechanical property can be ensured, and the bird-proof cover has a longer service life; the disc diameter design of the bird-proof cover is obtained through different bird dung dropping position tests, and the bird dung flashover can be effectively prevented under the optimal disc diameter; the silicone rubber buffer gasket with the thickness of 2mm is arranged at the fixing position of the bird-proof cover and the insulator hardware fitting, so that the abrasion of the bird-proof cover on the insulator core rod can be effectively avoided, and meanwhile, the sealing property of the splicing position can be ensured due to the elasticity of the silicone rubber; the bird prevention cover still has good anti-fouling effect; the design of drainage groove, baffle, notch of anti-bird cover not only can guarantee that the single drips the bird excrement of arbitrary position on the top facing and flows from the notch, guarantees not to take place bird excrement flashover, in addition at a large amount of accumulative total bird excrement of top facing, when the washing got off under the weather of strong wind and heavy rain, also can guarantee smooth drainage, does not take place flashover trouble. And secondly, the two semicircular cover bodies are directly spliced at the hardware fittings at the upper end of the insulator and are fixed by screws, so that the installation is convenient.
Drawings
FIG. 1 is a front view of an anti-bird cover in accordance with one embodiment of the present invention;
FIG. 2(a) is a top view of an anti-bird cover in accordance with one embodiment of the present invention;
FIG. 2(b) is a right side view of an anti-bird cover in accordance with one embodiment of the present invention;
FIG. 2(c) is a left side view of an anti-bird cover in accordance with one embodiment of the present invention;
wherein, 1-installing a clamping groove, 2-a drainage groove, 3-a notch, 4-a fixed screw hole, 5-an inclined cover surface and 6-a baffle;
FIG. 3 is a layout of a design principle test of one embodiment of the present invention;
FIG. 4 is a schematic diagram of the dropping of bird droppings tested according to the design principles of one embodiment of the present invention;
FIG. 5 is a schematic diagram of the protection range of bird droppings flashover in a design principle test according to an embodiment of the invention;
FIG. 6 is a schematic view of the installation of an anti-bird cover in accordance with one embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
This embodiment is based on 110kV transmission line bird dung flashover test, has sought the protection band of bird dung flashover, according to test result, has designed one kind and has had the novel bird guard that prevents of "drainage" function, compares with the traditional bird guard that prevents, can guarantee in self protection band 100% protection bird dung flashover, guarantee can not have the threat of flashover, can not bring the wearing and tearing to the insulator plug when taking place to save a large amount of dumping of bird dung under heavy rain weather. All the defects of the traditional bird-proof cover are abandoned, all the protection functions are reserved, and the bird-proof cover is expected to be widely popularized and used in an electric power system.
The embodiment is realized through the following technical scheme, as shown in fig. 1, the bird prevention cover for the power transmission line with the drainage function comprises two cover bodies with symmetrical semi-circular structures, wherein each cover body comprises a semi-circular disc, a drainage groove 2 fixed on the outer edge of the semi-circular disc and a baffle 6 fixed on the outer side of the drainage groove 2. The bird-proof cover is integrally made of epoxy resin material; the anti-bird cover is formed by fixedly splicing two cover bodies with similar semicircular structures, wherein the cover bodies are symmetrically arranged and are fixedly spliced through fastening bolts and screws, and the installation clamping groove 1 is positioned at the circle center, is semicircular and can be fixed with hardware fittings at the upper end of an insulator of a 110kV power transmission line; buffer pad is 2mm thick silicon rubber material, pastes in installation slot 1's inside, uses the silicon rubber adhesive to paste inside installation slot, can alleviate the friction between installation slot 1 and the gold utensil, can also play waterproof effect simultaneously. The fixing screw holes 4 are formed in two sides of the mounting clamping groove 1 and located on the diameter of the semicircular disc surface, and the fixing effect is achieved after the two cover bodies are spliced; the semi-disc surface is a horn-shaped inclined cover surface 5 with a downward opening, the downward inclination angle is 7 degrees, the cover surface is smooth, and bird droppings can directly slide down along the longitude line passing through the point after dropping on the cover surface; the drainage grooves 2 are fixed on the edge of the disc surface of the semicircular disc, and the notch 3 is formed in the 1/4 circumference of the outer edge of the semicircular disc, namely the middle of the outer edge of the semicircular disc, spirally extends downwards from the two edges of the semicircular disc along the outer edge of the disc surface, and is wider towards the notch 3; the baffle 6 is fixed at the outer side of the drainage groove 2, has consistent height and is downward spirally along with the drainage groove 2; the drainage groove at the notch 3 is widest. Bird droppings can follow warp on the semicircular disk face and flow to the edge, and the quotation edge sets up baffle 6, and bird droppings flow to marginal back, and guide bird droppings flow from spiral decurrent drainage groove 2, flow at notch 3 at last, and drainage groove 2 is more wide toward notch 3 more, can effectually prevent to block up. As shown in fig. 2(a), 2(b), and 2 (c).
And, the drainage groove 2 spirals downwards along the outer edge of the semicircular plate surface, the width of the initial point is 0mm, the depth is 0mm, the width of the notch 3 is 32mm, the depth is 20mm, and the width and the depth of the notch are uniformly changed from the starting point to the notch 3.
And the baffle 6 is fixed at the outer edge of the drainage groove 2 and has a height of 12 mm.
And, the notch 3 is located at the middle portion of the drainage groove 2 and has a width of 50 mm.
The downward inclination angle of the inclined cover surface 5 is 7 degrees, the downward inclination angle is an empirical value, and the value can be within the range of 5-7 degrees in practice; the horizontal plane projection radius of the inclined cover surface 5 takes different values for different power transmission lines, the value for the 110kV power transmission line is 280mm, the value for the 220kV power transmission line is 370mm, the value is laboratory test data, and a 20% margin can be actually reserved.
Moreover, the bird prevention cover is formed by splicing two cover bodies with similar semicircular structures, the half semicircular disc is directly opened and poured by epoxy resin materials, and the integrity of the device is ensured.
The design principle of this embodiment derives from the influence test of bird droppings dropping path to bird droppings flashover, and the test includes the following steps:
step 1: build bird's droppings flashover test platform, by 380kV power frequency power supply access electricity, adjust the size of access voltage through the voltage regulator, the voltage regulator export connects the transformer, the transformation ratio is 1: 250, and the maximum output is 100kV voltage. The outlet of the transformer is connected with a water resistor with the resistance value of 130k omega as a protective resistor. Adopt artifical support simulation shaft tower horizontal pole, insulator hangs in cross arm suspension point, has the slide rail on the cross arm to place bird excrement advancing device, simulation birds defecation. The insulator is FXBW4-110/100 type composite insulator for 110kV transmission lines. The simulation wire adopts a steel bar with the length of 1500mm and the diameter of 25 mm. The voltage on the analog conductor is sensed by a resistor-capacitor voltage divider as shown in fig. 3.
Step 2: preparing bird dung simulation liquid, wherein eggs, NaCl, 108 glue, diatomite and water are used for preparing bird dung according to a certain proportion, the eggs can simulate substances containing N in the bird dung, the NaCl is used for simulating soluble substances in the bird dung and adjusting the conductivity, the diatomite is used for simulating insoluble solid substances in the bird dung, and the 108 glue is matched with the eggs to adjust the viscosity. And placing the prepared bird dung simulation liquid in a bird dung propelling device.
And step 3: the position is adjusted, and the positions of the bird droppings pushing device on the cross arm and the placing angles of the wires are changed, so that the bird droppings dropping channels and the wires are respectively 0 degrees, 30 degrees, 60 degrees and 90 degrees, as shown in fig. 4.
And 4, step 4: and pressurizing, and applying 67kV constant voltage (1.05 times of the actual 110kV transmission line running phase voltage) to the wire.
And 5: and (4) test records, wherein under each bird dung dropping position, the bird dung pushing device is moved to a position away from a suspension point, so that under a certain position, the bird dung dropping channel is far away from the insulator core rod, ten tests are repeated at each distance until ten times, and the number of flashover of each group of tests is recorded.
Step 6: data analysis shows that the bird dung dropping path has a large influence on bird dung flashover according to a test result, when the angle between a bird dung channel and a lead is larger, the flashover probability under the same condition is smaller, and the critical flashover distance is reduced, so that the protection range of the bird dung is similar to an elliptical area with the lead as a long axis, and considering that the width of a cross arm is larger, the complete protection range is related to the voltage level and the type of a transmission tower, and the protection range of a typical 110kV transmission line is shown in fig. 5.
According to the above test, can discover, bird droppings drip position is 90 when being with the wire, critical flashover distance is the shortest, if regard as the top facing radius of anti-bird cover with this distance, then need guarantee to drip the bird droppings at the top facing optional position, can both follow and be 90 position droppings with the wire, the event needs to carry out the drainage to the bird droppings on the top facing, can guarantee that the bird droppings on arbitrary top facing position can both be drained, be 90 position droppings from being with the wire, guarantee that 100% does not take place the flashover at the protection band of anti-bird cover.
This embodiment is applicable to 110kV transmission line composite insulator, fixes the cover body concatenation of two class semi-circular structure symmetries in composite insulator upper end gold utensil department through firm bolt and screw, and bird droppings after guaranteeing the drainage can be followed and is 90 positions with the wire, so the installation requirement as follows:
1) the bird-proof cover is firmly installed, reliable anti-loosening measures are taken when the bolt is fastened, and waterproof measures are taken at the connecting part of the bird-proof cover and the ball head.
2) The bird-proof cover is installed in a butt joint mode and is installed on a ball head hanging ring of a hanging point on the suspension insulator string, and the connection line of two notches 3 of the drainage groove 2 is required to be perpendicular to a lead when the bird-proof cover is installed, as shown in figure 6.
The design principle and effect of the embodiment have complete test support and verification, and are scientific and reliable; the device has complete installation and use schemes, can be widely used in bird damage prevention work of power transmission lines, and protects driving for safe and stable operation of a power grid.
It should be understood that parts of the specification not set forth in detail are well within the prior art.
Although specific embodiments of the present invention have been described above with reference to the accompanying drawings, it will be appreciated by those skilled in the art that these are merely illustrative and that various changes or modifications may be made to these embodiments without departing from the principles and spirit of the invention. The scope of the invention is only limited by the appended claims.
Claims (7)
1. An anti-bird cover with a drainage function for a power transmission line is characterized by comprising two cover bodies which are symmetrically of a semi-circular structure and are spliced and fixed at hardware fittings at the upper end of an insulator of the power transmission line; each cover body with the similar semicircular structure symmetry comprises a semicircular disc, a drainage groove fixed on the outer edge of the semicircular disc and a baffle fixed on the outer side of the drainage groove; the notches of the drainage grooves are formed in the circumference of the outer edge 1/4 of the semicircular disc, the drainage grooves respectively extend downwards from the starting points of the disc surfaces on the two sides of the semicircular disc to the notches in a spiral mode along the outer edge, the width of each drainage groove is uniformly and gradually wide from the starting point to the notch, and the width of each drainage groove at the notches is the largest; the baffle plates are spirally downward along with the drainage grooves and have the same height; the semi-disc surface is an inclined cover surface with a downward opening and a trumpet shape, and the inclined cover surface is smooth.
2. The bird prevention cover for the transmission line with the drainage function as claimed in claim 1, wherein a mounting slot is arranged at the center of each semicircular disc, the mounting slot is semicircular, and the radius of the mounting slot is 1mm larger than that of hardware fittings at the upper end of an insulator of the transmission line; a buffer gasket is stuck inside the mounting clamping groove and is made of silicon rubber with the thickness of 2 mm; fixing screw holes are formed in the two sides of the mounting clamping groove and located on the diameter of the semicircular disc surface; the cover bodies with two similar semicircular structures are fixed on the hardware fitting at the upper end of the insulator of the power transmission line through the fixed mounting clamping grooves and the fixed screw holes.
3. The bird shield with the drainage function for the transmission line of claim 1, wherein the two symmetrical shield bodies with the semi-circular-like structures are made of epoxy resin materials.
4. The bird shield with the current guiding function for the power transmission line according to claim 1, wherein the inclined shield surface is inclined downward at an angle of 5 ° to 7 °; when the power transmission line is a 110kV power transmission line, the horizontal plane projection radius of the inclined cover surface is 280mm, and when the power transmission line is a 220kV power transmission line, the horizontal plane projection radius of the inclined cover surface is 370 mm.
5. The bird shield for the transmission line with the drainage function of claim 1, wherein the width of the initial point of the drainage groove on the disk surface of the semicircular disk is 0mm, the depth of the drainage groove is 0mm, the width of the groove opening is 32mm, the depth of the groove opening is 20mm, and the width and the depth of the drainage groove are uniformly changed from the initial point to the groove opening.
6. The bird shield for a power transmission line having a drainage function of claim 1, wherein the height of the baffle is 12 mm.
7. The bird shield for a power transmission line having a drainage function of claim 1, wherein the opening of the drainage groove is located at the center of the drainage groove and has a width of 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071216.6A CN110932211A (en) | 2019-11-05 | 2019-11-05 | Bird-proof cover with drainage function for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071216.6A CN110932211A (en) | 2019-11-05 | 2019-11-05 | Bird-proof cover with drainage function for power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110932211A true CN110932211A (en) | 2020-03-27 |
Family
ID=69853237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911071216.6A Pending CN110932211A (en) | 2019-11-05 | 2019-11-05 | Bird-proof cover with drainage function for power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110932211A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203966692U (en) * | 2014-06-24 | 2014-11-26 | 内蒙古包钢钢联股份有限公司 | Composite rod insulator |
| CN204146215U (en) * | 2014-05-21 | 2015-02-11 | 国家电网公司 | A kind of transmission line of electricity bird-proof cover |
| CN204763014U (en) * | 2015-07-06 | 2015-11-18 | 国网山东滨州市滨城区供电公司 | Aerial transmission line bird hazard preventing device |
| CN107878872A (en) * | 2016-09-30 | 2018-04-06 | 江阴市鑫海公路机械材料有限公司 | A kind of paint can with flow-guiding mouth |
| CN208391826U (en) * | 2018-06-21 | 2019-01-18 | 深圳市恩腾自动化设备有限公司 | A kind of tilting rhone |
-
2019
- 2019-11-05 CN CN201911071216.6A patent/CN110932211A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204146215U (en) * | 2014-05-21 | 2015-02-11 | 国家电网公司 | A kind of transmission line of electricity bird-proof cover |
| CN203966692U (en) * | 2014-06-24 | 2014-11-26 | 内蒙古包钢钢联股份有限公司 | Composite rod insulator |
| CN204763014U (en) * | 2015-07-06 | 2015-11-18 | 国网山东滨州市滨城区供电公司 | Aerial transmission line bird hazard preventing device |
| CN107878872A (en) * | 2016-09-30 | 2018-04-06 | 江阴市鑫海公路机械材料有限公司 | A kind of paint can with flow-guiding mouth |
| CN208391826U (en) * | 2018-06-21 | 2019-01-18 | 深圳市恩腾自动化设备有限公司 | A kind of tilting rhone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2772211C (en) | A partial pitch wind turbine blade with lightning protection | |
| CN107394742B (en) | A kind of power equipment lightning arrester | |
| CN104351162B (en) | A kind of upside-down hanging insulator bird-damage prevention device | |
| CN207504520U (en) | Bird-proof device | |
| CN215224266U (en) | Maintenance-free high-voltage line anti-pollution flashover composite insulation bird-proof cover | |
| CN110932211A (en) | Bird-proof cover with drainage function for power transmission line | |
| CN108283173A (en) | A kind of high voltage transmission line tower inside scarer | |
| CN104036889B (en) | A kind of steel tower lightning arrester anti-pollution structure | |
| CN209118851U (en) | A kind of railway anti-bird pest polymerization crystal silicon insulator | |
| CN107616164B (en) | Automatic bird repellent device of high tension transmission line shaft tower | |
| CN110676784A (en) | Bird damage flashover prevention device for power transmission line | |
| Zoro et al. | The use of wind turbine structure for lightning protection system | |
| He et al. | Analysis on bird damage accident of overhead transmission lines in Ningxia region and optimization Design of Insulating Grading Ring | |
| CN108448381B (en) | Dynamic lightning protection device for distribution box | |
| CN203882747U (en) | Power transmission line pylon lightening protection structure | |
| CN211181783U (en) | Ice and snow cover is prevented to porcelain insulator | |
| CN114009421A (en) | Bird repellent device for power line | |
| CN109599814B (en) | Anti-bird device used on suspension insulator string | |
| CN208970246U (en) | Anti- bird grading ring | |
| CN220554365U (en) | Bird repellent device for transformer substation framework | |
| Sekioka | Lightning protections of renewable energy generation systems | |
| CN218029338U (en) | High tension transmission line lightning protection prevents bird device | |
| CN217544274U (en) | High-voltage post insulator | |
| CN209389657U (en) | A kind of bird-preventing net for transmission line | |
| CN115528545B (en) | Lightning protection device for power cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200327 |
|
| RJ01 | Rejection of invention patent application after publication |