CN209785663U - Integrated lightning protection insulator with double-valve-block structure - Google Patents
Integrated lightning protection insulator with double-valve-block structure Download PDFInfo
- Publication number
- CN209785663U CN209785663U CN201920788409.2U CN201920788409U CN209785663U CN 209785663 U CN209785663 U CN 209785663U CN 201920788409 U CN201920788409 U CN 201920788409U CN 209785663 U CN209785663 U CN 209785663U
- Authority
- CN
- China
- Prior art keywords
- metal oxide
- insulator
- oxide valve
- plug
- lightning protection
- 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.)
- Expired - Fee Related
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 40
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 59
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 9
- 230000010354 integration Effects 0.000 claims abstract description 7
- 150000004706 metal oxides Chemical class 0.000 claims description 48
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000005684 electric field Effects 0.000 abstract description 10
- 230000032683 aging Effects 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 12
- 238000009434 installation Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 208000025274 Lightning injury Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 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
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Insulators (AREA)
Abstract
The utility model relates to a high voltage lightning protection technical field, concretely relates to integrated lightning protection insulator of double valve piece group structure, including the plug, the top of plug sets up the connecting hardware fitting, the bottom of plug sets up the lower connecting hardware fitting, the plug divide into three parts from top to bottom, the upper portion suit of plug is gone up the metallic oxide valve piece group, the lower part suit of plug is down the metallic oxide valve piece group, the middle part of going up the metallic oxide valve piece group, the middle part of plug and the outside cover of down the metallic oxide valve piece group are established silicon rubber sheath and full skirt; the utility model discloses annular metallic oxide valve block group evenly distributed is at integration insulator both ends, and the both ends of valve block group all set up the equalizer ring for the atress of insulator and the electric field distribution along insulator surface are more even, avoid the insulator because of the ageing phenomenon that long-term atress and electric field distribution are inhomogeneous to cause, prolong the life of integration insulator, have improved the power supply reliability.
Description
Technical Field
The utility model relates to a high voltage lightning protection technical field, concretely relates to integrated lightning protection insulator of bivalve piece group structure.
Background
Transmission and distribution lines are important components of electrical power systems. The transmission line boosts the power of a power plant or a substation and transmits the boosted power to the step-down substation, and the distribution line transmits the power of the step-down substation to the distribution transformer. Therefore, the safe and stable operation of the power transmission line and the power distribution line is closely related to the power supply reliability of the whole power system. Especially, China is striving to build large power grid interconnection and high-reliability intelligent power grids at present, and the requirements on safe and reliable operation of lines are higher and higher.
Both overhead transmission lines and overhead distribution lines are composed of towers, insulators, conducting wires, connecting hardware fittings, leads, grounding devices and the like. The overhead transmission lines are criss-cross and widely distributed. Especially for an ultra-high voltage transmission line, the transmission distance of the line is as long as thousands of kilometers, and the line inevitably spans areas with complex terrains such as Chongshan and steep mountains, much thunder and high soil resistivity. In these areas, power transmission lines are vulnerable to lightning strikes. The transmission distance of the overhead distribution line is not as long as that of the transmission line, but the overhead distribution line still faces the threat of lightning stroke due to inevitable crossing of mountainous areas, areas with much thunder, high soil resistivity and the like.
The accidents caused by line faults account for most of the accidents in the power grid, while the lightning trip accidents account for a larger proportion of the line faults, especially in the mountain lines mentioned above, the line faults are basically caused by lightning trip. Lightning has great harm to the safe and stable operation of a line, often causes a series of safety accidents such as insulator flashover, wire breakage, line tripping and the like, and particularly causes great difficulty in patrolling and finding faults by lightning in remote mountainous areas and areas with inconvenient traffic. Especially for high altitude areas, the probability of lightning striking the line is higher due to special geographical positions, and thunderstorm weather is often accompanied by high wind and rapid rain, so that the extremely high wind speed can cause trees falling on the line conductor, the vibration and even collision of the conductor, and the falling of the tower and the disconnection of the conductor. If the situations are not handled in time, electric power accidents can be caused, and the life and property safety of people can be endangered in serious cases. Currently, common line lightning protection measures include: the method comprises the steps of erecting a lightning conductor, reducing ground resistance, installing an arc suppression coil, installing a lightning arrester, erecting a coupling ground wire, installing an automatic reclosing device and the like. In recent years, with the continuous improvement of manufacturing processes, metal oxide lightning arresters become the first choice of line lightning protection measures due to the advantages of good performance, light weight and convenience in installation, and the line lightning arresters are increasingly widely applied.
At present, more lightning protection ways of lines adopt a mode of installing a metal oxide lightning arrester and a silicon rubber insulator in parallel. The installation mode is limited by the space size, the ground distance is not enough easily, the surface electric field distribution of the insulator is easy to change, the insulation performance of the insulator and the ground is influenced, meanwhile, the hardware fittings used by the line are increased due to the parallel installation mode, and the installation cost and the difficulty are increased. And a small part adopts an integrated lightning protection insulator, namely, a metal oxide lightning arrester and a silicon rubber insulator are integrally formed. Because the upper part of the existing integrated lightning protection insulator is an insulating part, and the lower part of the existing integrated lightning protection insulator is a lightning protection part, stress and uneven electric field distribution are easily caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the technical problem, the utility model aims to provide a: the utility model provides an integration lightning protection insulator of bivalve piece group structure can possess the dual function of line insulator insulation and line arrester, makes integration lightning protection insulator's atress and electric field distribution more even simultaneously.
The utility model discloses a solve the technical scheme that its technical problem adopted and do:
The integrated lightning protection insulator with the double-valve-block structure comprises a core rod, wherein an upper connecting hardware fitting is arranged at the top end of the core rod, a lower connecting hardware fitting is arranged at the bottom end of the core rod, the core rod is divided into an upper part, a middle part and a lower part from top to bottom, an upper metal oxide valve block group is sleeved on the upper part of the core rod, a lower metal oxide valve block group is sleeved on the lower part of the core rod, and a silicon rubber sheath and an umbrella skirt are sleeved on the upper metal oxide valve block group, the middle part of the core rod and.
Preferably, the upper metal oxide valve plate group and the lower metal oxide valve plate group are respectively provided with the same number of metal oxide valve plates according to the lightning protection requirements of different voltage levels.
Preferably, the upper and lower sides of the upper metal oxide valve plate set are respectively provided with an upper grading ring and an upper grading electrode, and the upper and lower sides of the lower metal oxide valve plate set are respectively provided with a lower grading electrode and a lower grading ring.
Preferably, the core rod is an epoxy resin core rod.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model discloses both had the insulation and the support function of insulator, had the lightning protection function of metal oxide arrester simultaneously again concurrently, fused the two function together, had both reduced the size of equipment, had practiced thrift the material again.
(2) The utility model discloses a structural height and leakage distance isoparametric are unanimous with the structural parameter of conventional insulator, can directly be used for replacing overhang insulator and cross arm insulator among current transmission line and distribution lines, and the construction installation is simple and convenient.
(3) The utility model discloses annular metallic oxide valve block group evenly distributed is at integration insulator both ends, and the both ends of valve block group all set up the equalizer ring for the atress of insulator and the electric field distribution along insulator surface are more even, avoid the insulator because of the ageing phenomenon that long-term atress and electric field distribution are inhomogeneous to cause, prolong the life of integration insulator, have improved the power supply reliability.
(4) The utility model discloses the annular metallic oxide valve block that adopts is hollow cylinder, and is bigger for solid cylindricality metallic oxide valve block diameter commonly used, and electric field distribution is more even, and the heat-sinking capability is stronger, has improved the through-flow capacity of valve block, and lightning protection effect is superior. The annular metal oxide valve plate group does not bear the normal working operation voltage of the system, thereby effectively reducing the aging speed of the valve plate and prolonging the service life of the valve plate.
(5) The utility model discloses the insulator plug is drawn and is pulled out by epoxy and glass fiber for the main raw materials and form, can make high temperature resistant, acid-resistant plug according to different operational environment's demand, possesses good shock resistance, ageing resistance and dielectric property simultaneously, and silicon rubber sheath and full skirt elasticity are good, possess antifouling sudden strain of a muscle, prevent covering ice (snow) and characteristics such as corrosion-resistant.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
in the figure: 1-upper connecting hardware, 2-upper equalizing ring, 3-upper metal oxide valve plate group, 4-upper equalizing electrode, 5-core rod, 6-silicon rubber sheath and umbrella skirt, 7-lower equalizing electrode, 8-lower metal oxide valve plate group, 9-lower equalizing ring and 10-lower connecting hardware.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings:
example 1
As shown in fig. 1, the integrated lightning protection insulator with a double-valve-disc set structure of the present invention comprises a core rod 5, wherein the core rod 5 is an epoxy resin core rod, an upper connecting hardware 1 is arranged at the top end of the core rod 5, a lower connecting hardware 10 is arranged at the bottom end of the core rod 5, and the three components are integrated into a whole through a compression molding process; the core rod 5 is divided into an upper part, a middle part and a lower part from top to bottom, the upper part of the core rod 5 is sleeved with an upper metal oxide valve sheet group 3, the lower part of the core rod 5 is sleeved with a lower metal oxide valve sheet group 8, the upper metal oxide valve sheet group 3 and the lower metal oxide valve sheet group 8 are respectively provided with an equal number of metal oxide valve sheets according to lightning protection requirements of different voltage levels, the metal oxide valve sheets are annular metal oxide valve sheets, the interior of the metal oxide valve sheets is hollow, the size and the number of the annular metal oxide valve sheets are determined according to the lightning protection performance requirements corresponding to the operating voltage levels to form the metal oxide valve sheet group, the length of the metal oxide valve sheet group is determined by the lightning protection requirements corresponding to the voltage levels and the effective value of the maximum operating voltage, and the silicon rubber sheaths and umbrella skirts 6 are sleeved on the.
The upper equalizing ring 2 and the upper equalizing electrode 4 are respectively arranged on the upper side and the lower side of the upper metal oxide valve piece group 3, the lower equalizing electrode 7 and the lower equalizing ring 9 are respectively arranged on the upper side and the lower side of the lower metal oxide valve piece group 8, the upper equalizing electrode 4 and the lower equalizing electrode 7 are made of aluminum, stainless steel or iron, the surface of the upper equalizing electrode and the lower equalizing electrode is polished to be smooth and burr-free, and the electric field distribution on the surface of the integrated insulator is improved. And the annular metal oxide valve plate combined silicon rubber sheaths are packaged by adopting glass fiber reinforced plastics.
The utility model discloses a use:
when the power transmission line normally runs, the upper metal oxide valve plate group 3 and the lower metal oxide valve plate group 8 are isolated from the working voltage through the discharge gap between the upper voltage-sharing electrode 4 and the lower voltage-sharing electrode 7, the metal oxide valve plate group almost bears no voltage, the aging speed of the valve plates is slowed down, and the service life of the valve plates is prolonged. When the lightning strike happens, the discharge gap between the upper voltage-sharing electrode 4 and the lower voltage-sharing electrode 7 is broken down instantly, the upper metal oxide valve plate group 3 and the lower metal oxide valve plate group 8 present low impedance, and form a leakage channel together with the upper connecting hardware fitting 1 and the lower connecting hardware fitting 10, so that the lightning current is discharged to the ground. After lightning impact, operating voltage is applied to the upper metal oxide valve plate group 3 and the lower metal oxide valve plate group 8, the metal oxide valve plate group presents high impedance, current is suppressed to a lower value, and a discharge gap between the upper voltage-sharing electrode 4 and the lower voltage-sharing electrode 7 is recovered in an insulating mode, so that tripping and breaking accidents caused by lightning flashover are prevented.
The utility model discloses a theory of operation is: this device is through both ends about the insulator with even distribution of metallic oxide disk group, and the metallic oxide disk group 3 and metallic oxide disk group 8 down are gone up in the constitution for insulator atress and surface electric field distribute more evenly, and the design science, the practicality is strong, and forms the clearance of discharging through setting up voltage-sharing electrode 4 and voltage-sharing electrode 7 down, constitutes the leakage passage of lightning current together with last link fitting 1 and lower link fitting 10. Meanwhile, the upper metal oxide valve plate group 3 and the lower metal oxide valve plate group 8 are isolated from the working voltage under the normal operation state by the discharge gap, and the service life of the valve plates is prolonged.
Claims (4)
1. The utility model provides an integration lightning protection insulator of double-valve group structure, includes plug (5), and link fitting (1) are gone up in the top setting of plug (5), and link fitting (10), its characterized in that are down set up to the bottom of plug (5): the core rod (5) is divided into an upper part, a middle part and a lower part from top to bottom, the upper part of the core rod (5) is sleeved with an upper metal oxide valve plate group (3), the lower part of the core rod (5) is sleeved with a lower metal oxide valve plate group (8), and the middle parts of the upper metal oxide valve plate group (3) and the core rod (5) and the outer parts of the lower metal oxide valve plate group (8) are sleeved with a silicon rubber sheath and an umbrella skirt (6).
2. The integrated lightning protection insulator with the double-valve-block set structure according to claim 1, wherein: the upper metal oxide valve plate group (3) and the lower metal oxide valve plate group (8) are respectively provided with the same number of metal oxide valve plates according to the lightning protection requirements of different voltage levels.
3. The integrated lightning protection insulator of the double-valve-block set structure according to claim 1 or 2, wherein: an upper equalizing ring (2) and an upper equalizing electrode (4) are respectively arranged on the upper side and the lower side of the upper metal oxide valve piece group (3), and a lower equalizing electrode (7) and a lower equalizing ring (9) are respectively arranged on the upper side and the lower side of the lower metal oxide valve piece group (8).
4. The integrated lightning protection insulator with the double-valve-block set structure according to claim 1, is characterized in that: the core rod (5) is an epoxy resin core rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788409.2U CN209785663U (en) | 2019-05-29 | 2019-05-29 | Integrated lightning protection insulator with double-valve-block structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788409.2U CN209785663U (en) | 2019-05-29 | 2019-05-29 | Integrated lightning protection insulator with double-valve-block structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209785663U true CN209785663U (en) | 2019-12-13 |
Family
ID=68788191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920788409.2U Expired - Fee Related CN209785663U (en) | 2019-05-29 | 2019-05-29 | Integrated lightning protection insulator with double-valve-block structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209785663U (en) |
-
2019
- 2019-05-29 CN CN201920788409.2U patent/CN209785663U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111740349B (en) | Overhead ground wire configuration method for power distribution network and overhead ground wire | |
| CN106098264A (en) | A kind of 10kV Multifunctional disaster prevention evil insulator and preparation method | |
| CN101763922A (en) | Lightning-protection method and device for transmission line composite insulator | |
| WO2021223313A1 (en) | Power transmission line without lightning shield line | |
| CN210349473U (en) | Composite insulator device with built-in piezoresistor unit | |
| CN107481821A (en) | A kind of anti-thunder insulator | |
| CN107301907B (en) | Anti-icing lightning protection insulator | |
| CN102227077A (en) | Tower arrangement structure at cable terminal | |
| CN101859617B (en) | Anti-ice-flashover composite insulator with lightning protection function | |
| CN209785663U (en) | Integrated lightning protection insulator with double-valve-block structure | |
| CN202473431U (en) | External string pure air gap lightning arrester | |
| CN2852338Y (en) | Composite casing zinc oxide lightning arrester | |
| CN209199692U (en) | A kind of tension-resistant rod external series gap metal oxide arrester | |
| CN204760146U (en) | Anti -icing suspension type composite insulator of lightning protection for 10kV transmission line | |
| CN107742881B (en) | Virtual positive pole induction type lightning protection device on high-voltage direct-current overhead transmission line | |
| CN207910458U (en) | The virtual positive induction type lightning conducter lightning protection device in high voltage direct current overhead transmission line road | |
| CN215417570U (en) | Low wind pressure anti-lightning overhead insulated cable | |
| CN104952560A (en) | Anti-thunder and anti-icing suspension type composite insulator for 10 kV transmission line | |
| CN204732236U (en) | 10kV lightning-protection ice used for transmission line needle type composite insulator | |
| CN109786046B (en) | 500kV line lightning-proof anti-icing flashover composite insulator | |
| CN210245185U (en) | Windage yaw jumper wire prevention insulator for 500kV transmission line | |
| CN208337122U (en) | A kind of 10kV suspended insulated guide wire with the anti-lightning strike broken string of shielded layer | |
| CN202004400U (en) | Cable terminal support arrangement structure | |
| CN202076058U (en) | Straight-line tower lightning protection device with 35-kilovolt circuit | |
| CN2539333Y (en) | Active ion switch lightning arrestor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |