CN112562949A - Series multi-gap metal oxide arrester - Google Patents
Series multi-gap metal oxide arrester Download PDFInfo
- Publication number
- CN112562949A CN112562949A CN202011451684.9A CN202011451684A CN112562949A CN 112562949 A CN112562949 A CN 112562949A CN 202011451684 A CN202011451684 A CN 202011451684A CN 112562949 A CN112562949 A CN 112562949A
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- CN
- China
- Prior art keywords
- electrode
- gap
- discharge
- conductive bolt
- metal oxide
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- 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
- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 15
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 15
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 15
- 239000004945 silicone rubber Substances 0.000 claims 2
- 238000007599 discharging Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
- H01C7/123—Arrangements for improving potential distribution
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/16—Resistor networks not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/08—Overvoltage arresters using spark gaps structurally associated with protected apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
- H01T4/20—Arrangements for improving potential distribution
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention relates to a series multi-gap metal oxide arrester, which comprises: the core comprises an SMC layer, and a first electrode, a first insulating rod, a second electrode, three resistance discs, a third electrode, a second insulating rod and a fourth electrode which are sequentially arranged in the SMC layer; the silicon rubber outer sleeve wraps the core body, the first discharge rod is connected with the first electrode, the first discharge ball is connected with the second electrode, the second discharge rod is connected with the third electrode, and the second discharge ball is connected with the fourth electrode; the end covers are arranged at two ends of the silicon rubber outer sleeve, the first conductive bolt penetrates through the end covers to be connected with the first electrode, the first conductive bolt is connected with the high-voltage bus, the second conductive bolt penetrates through the end cover at the other side to be connected with the fourth electrode, and the second conductive bolt is connected with the ground wire. The invention adopts double-gap design, the gap structure is designed as a spherical gap, the discharge voltage is more stable, and the protection performance is more reliable.
Description
Technical Field
The invention belongs to the technical field of lightning arresters, and relates to a series multi-gap metal oxide lightning arrester.
Background
With the continuous lengthening of power distribution network lines and the popularization of insulation design, the line breaking accident caused by lightning damage is obvious, the statistical number of insulator breakdown accidents is continuously increased, and the safe operation of the power distribution network lines is seriously threatened. The lightning arrester is an electrical device which can release thunder and lightning or release overvoltage energy for operating an electric power system, protect electrical equipment from being damaged by instantaneous overvoltage, and cut off follow current without causing short circuit of system grounding. The arrester can effectual protection power equipment, in case abnormal voltage appears, the arrester plays the guard action, and after the magnitude of voltage is normal, the arrester reconverted fast again to guarantee the normal power supply of system.
The clearance design of traditional clearance arrester is whole to be single clearance, and its clearance also is mostly split type design with the arrester body, clearance and arrester independent structure promptly, and the cooperation installation, its electrical property is difficult to guarantee. Some gaps are designed before the arrester body, and others are designed after the arrester body. The gap is designed in front of the arrester body, the arrester body is isolated from the system, and when overvoltage occurs, the overvoltage energy is released at one time. The gap is designed behind the arrester body, and after the arrester reaches the discharge voltage, the gap is continuously pressurized, so that the gap is broken down, and overvoltage energy is externally released. The two designs have advantages and disadvantages, the discharge mechanisms are various, and the electric field distribution is disordered, so that the discharge voltage is unstable, and the protection performance is influenced.
Disclosure of Invention
The invention aims to provide a series multi-gap metal oxide arrester, which adopts a double-gap design, adopts a spherical gap structure, and has more stable discharge voltage and more reliable protection performance.
The invention relates to a series multi-gap metal oxide arrester, which comprises: the core comprises an SMC layer, and a first electrode, a first insulating rod, a second electrode, three resistance sheets, a third electrode, a second insulating rod and a fourth electrode which are sequentially arranged in the SMC layer; the silicon rubber outer sleeve is wrapped outside the core body, the first discharge rod is connected with the first electrode, the first discharge ball is connected with the second electrode, the second discharge rod is connected with the third electrode, and the second discharge ball is connected with the fourth electrode; the end covers are installed at two ends of the silicon rubber outer sleeve, the first conductive bolt penetrates through the end cover on one side to be connected with the first electrode, the first conductive bolt is connected with the high-voltage bus, the second conductive bolt penetrates through the end cover on the other side to be connected with the fourth electrode, and the second conductive bolt is fixed on the cross arm and connected with the ground wire.
In the series multi-gap metal oxide arrester, the resistor disc is a piezoresistor.
In the series multi-gap metal oxide arrester, a plurality of silicon rubber umbrella skirts are integrally formed on the surface of the silicon rubber outer sleeve.
The series multi-gap metal oxide arrester at least has the following beneficial effects:
1. the multi-gap lightning arrester adopts a double-gap design, the gap structure is a spherical gap design, the discharge voltage is more stable, and the protection performance is more reliable.
2. The multi-gap lightning arrester is characterized in that two ends, namely the front end and the rear end, of the lightning arrester body are respectively provided with a discharge gap, so that the multi-gap lightning arrester has the characteristics of two structures, more stable discharge and better arc breaking and arc light effects.
3. According to the multi-gap lightning arrester, the gap mechanism and the lightning arrester are designed in an integrated mode, the electrical performance is stable, and the installation is convenient.
Drawings
Fig. 1 is a schematic view of a series multiple gap metal oxide arrester according to the present invention;
fig. 2 is a cross-sectional view of a series multiple gap metal oxide arrester of the present invention;
fig. 3 is a sectional view of the core.
Detailed Description
As shown in fig. 1 to 3, a series multi-gap metal oxide arrester of the present invention includes: the core body, the silicon rubber jacket 2, the first discharging rod 4, the second discharging rod 6, the first discharging ball 5, the second discharging ball 7, the first conductive bolt 3 and the second conductive bolt 9. The core body comprises an SMC layer 18, and a first electrode 11, a first insulating rod 12, a second electrode 13, three resistive sheets 14, a third electrode 15, a second insulating rod 16 and a fourth electrode 17 which are arranged in the SMC layer 18 in sequence. The silicon rubber outer sleeve 2 is wrapped outside the core body, the first discharge rod 4 is connected with the first electrode 11, the first discharge ball 5 is connected with the second electrode 13, the second discharge rod 6 is connected with the third electrode 15, and the second discharge ball 7 is connected with the fourth electrode 17. End covers 8 are installed at two ends of the silicon rubber outer sleeve 2, the first conductive bolt 3 penetrates through the end cover 8 on one side to be connected with the first electrode 11, the first conductive bolt 3 is connected with a high-voltage bus, the second conductive bolt 9 penetrates through the end cover 8 on the other side to be connected with the fourth electrode 17, and the second conductive bolt 9 is fixed on the cross arm and connected with the ground wire.
The resistor disc 14 is a voltage dependent resistor.
And a plurality of silicon rubber umbrella skirts are integrally formed on the surface of the silicon rubber outer sleeve 2.
The arrester of the invention is the same as the traditional gapless arrester when being installed, the upper end is connected with a high-voltage bus and has the same potential with the system, and the lower end is well grounded and has the same potential with the ground.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined by the appended claims.
Claims (3)
1. A series multiple gap metal oxide arrester, comprising: the core comprises an SMC layer, and a first electrode, a first insulating rod, a second electrode, three resistance sheets, a third electrode, a second insulating rod and a fourth electrode which are sequentially arranged in the SMC layer; the silicon rubber outer sleeve is wrapped outside the core body, the first discharge rod is connected with the first electrode, the first discharge ball is connected with the second electrode, the second discharge rod is connected with the third electrode, and the second discharge ball is connected with the fourth electrode; the end covers are installed at two ends of the silicon rubber outer sleeve, the first conductive bolt penetrates through the end cover on one side to be connected with the first electrode, the first conductive bolt is connected with the high-voltage bus, the second conductive bolt penetrates through the end cover on the other side to be connected with the fourth electrode, and the second conductive bolt is fixed on the cross arm and connected with the ground wire.
2. The series multi-gap metal oxide arrester of claim 1 wherein the resistive patch is a varistor.
3. The tandem multi-gap metal oxide surge arrester of claim 1 wherein the silicone rubber casing has a plurality of silicone rubber sheds integrally formed on a surface thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011451684.9A CN112562949A (en) | 2020-12-10 | 2020-12-10 | Series multi-gap metal oxide arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011451684.9A CN112562949A (en) | 2020-12-10 | 2020-12-10 | Series multi-gap metal oxide arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112562949A true CN112562949A (en) | 2021-03-26 |
Family
ID=75061688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011451684.9A Pending CN112562949A (en) | 2020-12-10 | 2020-12-10 | Series multi-gap metal oxide arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112562949A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06113434A (en) * | 1992-09-30 | 1994-04-22 | Furukawa Electric Co Ltd:The | Interphase spacer |
| CN206379227U (en) * | 2017-01-18 | 2017-08-04 | 山东莱芜电瓷有限公司 | A kind of fixation external series gap Zinc-Oxide Arrester for being easy to count |
| CN109448939A (en) * | 2018-12-21 | 2019-03-08 | 辽宁华隆电力科技股份有限公司 | A kind of tension-resistant rod external series gap metal oxide arrester |
| CN213424750U (en) * | 2020-12-10 | 2021-06-11 | 辽宁华隆电力科技股份有限公司 | Series multi-gap metal oxide arrester |
-
2020
- 2020-12-10 CN CN202011451684.9A patent/CN112562949A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06113434A (en) * | 1992-09-30 | 1994-04-22 | Furukawa Electric Co Ltd:The | Interphase spacer |
| CN206379227U (en) * | 2017-01-18 | 2017-08-04 | 山东莱芜电瓷有限公司 | A kind of fixation external series gap Zinc-Oxide Arrester for being easy to count |
| CN109448939A (en) * | 2018-12-21 | 2019-03-08 | 辽宁华隆电力科技股份有限公司 | A kind of tension-resistant rod external series gap metal oxide arrester |
| CN213424750U (en) * | 2020-12-10 | 2021-06-11 | 辽宁华隆电力科技股份有限公司 | Series multi-gap metal oxide arrester |
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