CN112018737B - Join in marriage net twine way arrester - Google Patents
Join in marriage net twine way arrester Download PDFInfo
- Publication number
- CN112018737B CN112018737B CN202010852188.8A CN202010852188A CN112018737B CN 112018737 B CN112018737 B CN 112018737B CN 202010852188 A CN202010852188 A CN 202010852188A CN 112018737 B CN112018737 B CN 112018737B
- Authority
- CN
- China
- Prior art keywords
- lightning arrester
- arrester
- base
- plug
- zinc oxide
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
-
- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
Landscapes
- Thermistors And Varistors (AREA)
Abstract
The invention belongs to the technical field of lightning arresters, and discloses a lightning arrester for a distribution network line. The plurality of zinc oxide lightning arrester pieces are connected in sequence and are arranged in the lightning arrester shell; the upper plug is arranged at an opening at the upper end of the shell of the arrester, one end of the upper plug is electrically connected with the zinc oxide arrester sheet, and the other end of the upper plug is electrically connected with the contact sheet at the top of the base of the arrester; the lower plug is provided with a through hole and is arranged at the lower end opening of the shell of the lightning arrester; the movable end of the ejector rod is connected with the through hole in a sliding manner; the pressure spring abuts against the working end and is abutted against the zinc oxide lightning arrester sheet; the separating mechanism is arranged on the lower plug, and when the zinc oxide lightning arrester piece thermally bursts, the movable end is driven to move towards the lower plug, so that the separating mechanism is separated from the through hole and is separated from the movable end. The invention utilizes the energy generated when the internal zinc oxide is over-current and burst to be separated from the power grid system instantly, thereby reducing the power failure time of the line and improving the reliability of power utilization.
Description
Technical Field
The invention relates to the technical field of lightning arresters, in particular to a lightning arrester for a distribution network line.
Background
The line zinc oxide arrester mainly divide into two types of traditional zinc oxide arrester and thermal explosion formula arrester, and traditional zinc oxide arrester does not possess and breaks away from the mechanism, and when the arrester bursts, main part zinc oxide is punctured, and inside metal material melts, causes line ground fault, can't resume the power supply rapidly. The thermal explosion type arrester is additionally provided with a thermal explosion type disconnector at the bottom of the traditional zinc oxide arrester, the thermal explosion type disconnector is filled with hot melt materials, when lightning overcurrent occurs, the thermal explosion type disconnector explodes, the direction of a base is changed by utilizing a spring device at the bottom, and then the thermal explosion type disconnector drops from a lightning arrester pillar. The threshold value of the hot melting material in the lightning arrester is lower than the over-current capacity of the zinc oxide lightning arrester, the lightning arrester is easy to frequently act and burst, the burden of maintenance and replacement is increased, the hot melting material is connected with the zinc oxide of the lightning arrester in series, the zinc oxide belongs to the upper level, the hot melting material belongs to the lower level, and due to the fact that the hot melting material is influenced by various factors such as processing technology, temperature, humidity and current duration, poor matching formed between the hot melting material and the zinc oxide is easy to fail.
Disclosure of Invention
The invention aims to provide a distribution network line lightning arrester which can be separated from a power grid system instantly when high-voltage current flows into the distribution network line lightning arrester, so that the time of line power failure is shortened, and the reliability of power utilization is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a distribution network line arrester comprising:
the lightning arrester comprises a lightning arrester shell, a lightning arrester shell and a lightning arrester, wherein the interior of the lightning arrester shell is hollow, and two ends of the lightning arrester shell are open;
the lightning arrester comprises a plurality of zinc oxide lightning arrester pieces, wherein the zinc oxide lightning arrester pieces are sequentially connected, installed in a lightning arrester shell and axially arranged along the lightning arrester shell;
one end of the upper plug extends into and plugs the upper end opening of the lightning arrester shell and is electrically connected with the zinc oxide lightning arrester piece, and the other end of the upper plug is electrically connected with the contact piece at the top of the lightning arrester base;
the lower plug extends into and plugs the lower end opening of the lightning arrester shell, and is provided with a through hole along the axial direction;
the ejector rod is provided with a movable end and a working end fixedly connected to the top of the movable end, and the movable end is connected in the through hole in a sliding manner;
the pressure spring is clamped between the working end and the lower plug and used for jacking the working end to be abutted against the zinc oxide lightning arrester sheet; and
the separating mechanism is arranged on the lower plug, and in an initial state, the separating mechanism is electrically connected with the contact piece at the bottom of the lightning arrester base, is clamped at the movable end and axially slides in the through hole synchronously with the movable end, and when the zinc oxide lightning arrester piece thermally bursts, the movable end is driven to move towards the lower plug, so that the separating mechanism is separated from the through hole and is separated from the movable end.
Further, the separation mechanism includes:
the lower bracket is fixedly arranged on the lower plug;
the pin can be clamped at the movable end, and the movable end can drive the pin to axially slide in the through hole;
one end of the connecting rod is rotatably connected to the pin;
one end of the lower base is rotatably connected to the lower support, the other end of the lower base is rotatably connected to the other end of the connecting rod, a first contact part is arranged on the lower base, and the first contact part is electrically connected with the contact piece at the bottom of the lightning arrester base; and
the torsional spring, install in the lower carriage with the rotation junction of lower base, the one end of torsional spring support lean on in the lower carriage, the other end support lean on in the lower base, work as the pin is followed deviate from the back in the through-hole, the torsional spring drive the lower carriage with the lower base is kept away from relatively.
Further, the upper plug comprises a top plug and a top contact which are connected with each other, the top plug is installed at an opening at one end of the arrester shell, a conductive contact is arranged at the end part of the top plug, and the conductive contact is electrically connected with the zinc oxide arrester piece; and a second contact part is arranged at the end part of the top contact and is electrically connected with the top contact piece of the lightning arrester base.
Further, a cross shaft is arranged on the lower base, the cross shaft is rotatably mounted on the lightning arrester base, and when the second contact portion and the first contact portion are respectively disengaged from the top contact piece of the lightning arrester base and the bottom contact piece of the lightning arrester base, the lower base is suspended on the lightning arrester base through the cross shaft.
Further, a pull ring is arranged on the top contact.
Furthermore, an operation hole is formed in the lower base.
Furthermore, a plurality of threaded holes are formed in the lower plug, a plurality of through holes are formed in the lower support, and fasteners penetrate through the through holes to be in threaded connection with the threaded holes to connect the lower plug and the lower support.
Furthermore, the ejector pin includes the bracing piece and supports the head, support the head as the work end, the one end rigid coupling of bracing piece in support the head, the other end as the expansion end joint in the pin, the pressure spring cover is located the bracing piece outside.
Further, the length of the supporting rod is adjustable.
Furthermore, the lightning arrester shell is made of epoxy resin.
The invention has the beneficial effects that: under the environment that the main body of zinc oxide is not changed, when high-voltage current flows into the lightning arrester of the distribution network line, the zinc oxide of the lightning arrester of the distribution network line is subjected to overcurrent burst, and the lightning arrester of the distribution network line is separated from the lightning arrester base instantly by utilizing energy generated during the overcurrent burst of the zinc oxide, so that the lightning arrester of the distribution network line is separated from a power grid system rapidly, a power grid can be reclosed successfully without tripping or after tripping, the power failure time of the line is shortened, and the reliability of power utilization is improved.
Drawings
Fig. 1 is a disassembled schematic view of a distribution network line lightning arrester structure according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a distribution network line arrester in an initial state according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a distribution network line arrester when a zinc oxide arrester piece is thermally exploded according to an embodiment of the invention.
In the figure:
1. a lightning arrester housing; 2. a zinc oxide arrester sheet; 3. an upper plug; 31. a top plug; 32. a top contact; 321. a second contact portion; 322. a pull ring; 4. a lower plug; 5. a top rod; 6. a pressure spring;
7. a separating mechanism; 71. a lower bracket; 72. a pin; 73. a connecting rod; 74. a lower base; 741. a first contact portion; 742. an operation hole; 743. a horizontal axis; 75. a torsion spring.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar parts throughout or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example one
As shown in fig. 1-3, the invention provides a distribution network line arrester, which comprises an arrester housing 1, a zinc oxide arrester piece 2, an upper plug 3, a lower plug 4, a top rod 5, a pressure spring 6 and a separating mechanism 7, wherein the arrester housing 1 is hollow and has two open ends; the plurality of zinc oxide lightning arrester pieces 2 are sequentially connected, are arranged in the lightning arrester shell 1 and are axially arranged along the lightning arrester shell 1; one end of the upper plug 3 extends into and plugs the upper end opening of the lightning arrester shell 1 and is electrically connected with the zinc oxide lightning arrester piece 2, and the other end of the upper plug 3 is electrically connected with the contact piece at the top of the lightning arrester base; the lower plug 4 extends into and plugs the lower end opening of the lightning arrester shell 1, and the lower plug 4 is provided with a through hole along the axial direction; the ejector rod 5 is provided with a movable end and a working end fixedly connected to the top of the movable end, and the movable end is connected in the through hole in a sliding manner; the pressure spring 6 is clamped between the working end and the lower plug 4, and the top pressure working end is abutted with the zinc oxide lightning arrester sheet 2; the separating mechanism 7 is installed on the lower plug 4, when in an initial state, the separating mechanism 7 is electrically connected with the contact piece at the bottom of the lightning arrester base, the separating mechanism 7 is clamped at the movable end and axially slides in the through hole synchronously with the movable end, and when the zinc oxide lightning arrester piece 2 thermally bursts, the movable end is driven to move towards the lower plug 4, so that the separating mechanism 7 is separated from the through hole and is separated from the movable end.
In the embodiment, the lightning arrester of the distribution network line is installed on the existing lightning arrester base, when in an initial state, the upper plug 3 is electrically connected with a contact piece at the top of the existing lightning arrester base, the separating mechanism 7 is electrically connected with the contact piece at the bottom of the existing lightning arrester base, the ejector rod 5 is tightly pressed against the zinc oxide lightning arrester sheet 2 under the action of the pressure spring 6, the separating mechanism 7 is clamped at the movable end, the contact pieces at the upper part and the lower part of the lightning arrester base, the upper plug 3, the zinc oxide lightning arrester sheet 2, the ejector rod 5 and the separating mechanism 7 form an electric loop, when high-voltage current flows into the lightning arrester of the distribution network line, the zinc oxide lightning arrester sheet 2 is burst and rapidly expands due to overcurrent, at the moment, the ejector rod 5 overcomes the downward movement of the pressure spring 6, the movable end pushes the separating mechanism 7 to move downward in the through hole, and then the separating mechanism 7 is separated from the through hole and separated from the movable end, the lightning arrester of the distribution network line is separated from the power grid system quickly.
Specifically, the separating mechanism 7 comprises a lower bracket 71, a pin 72, a connecting rod 73, a lower base 74 and a torsion spring 75, wherein the lower bracket 71 is fixedly arranged on the lower plug 4; the pin 72 can be clamped at the movable end, and the movable end can drive the pin 72 to axially slide in the through hole; one end of the connecting rod 73 is rotatably connected with the pin 72; one end of the lower base 74 is rotatably connected to the lower bracket 71, the other end of the lower base is rotatably connected to the other end of the connecting rod 73, a first contact part 741 is arranged on the lower base, and the first contact part 741 is electrically connected with the lightning arrester base bottom contact piece; the torsion spring 75 is installed at the rotary connection position of the lower bracket 71 and the lower base 74, one end of the torsion spring 75 is abutted against the lower bracket 71, the other end of the torsion spring 75 is abutted against the lower base 74, and after the pin 72 is disengaged from the through hole, the torsion spring 75 drives the lower bracket 71 and the lower base 74 to be relatively far away. When the zinc oxide arrester sheet 2 is thermally burst, the zinc oxide arrester sheet rapidly expands to drive the movable end and the pin 72 to axially slide in the through hole, when the movable end approaches a critical position at the bottom of the lower plug 4, the radial pressure of the pin 72 disappears instantly, the pin 72 is disengaged from the through hole, the lower bracket 71 and the lower base 74 rapidly separate from each other under the elastic force of the torsion spring 75, and the first contact part 741 is disengaged from the contact sheet at the bottom of the arrester base, so that the upper plug 3 clamped to the contact sheet at the top of the arrester base is loosened, and the distribution network line arrester is disengaged from the arrester base.
More specifically, the upper plug 3 comprises a top plug 31 and a top contact 32 which are connected with each other, the top plug 31 is made of aluminum alloy and is arranged at an opening at one end of the arrester shell 1, and a conductive contact is arranged at the end part and is electrically connected with the zinc oxide arrester piece 2; the top contact 32 is made of brass, and has a second contact portion 321 at an end thereof, and the second contact portion 321 is engaged with and electrically connected to a conventional arrester base top contact piece.
More specifically, the lower base 74 is provided with a transverse shaft 743, the transverse shaft 743 is rotatably installed on the arrester base, after the zinc oxide arrester piece 2 is thermally burst, the second contact portion 321 and the first contact portion 741 are respectively separated from the arrester base top contact piece and the arrester base bottom contact piece, and the lower base 74 can be suspended on the arrester base through the transverse shaft 743, so that people can be prevented from being injured by the arrester of the distribution network line.
More specifically, a pull ring 322 is provided on the top contact 32, and the insulating operating rod mounts the top contact 32 to the arrester base through the pull ring 322.
More specifically, the lower base 74 is provided with an operation hole 742, and the insulating operation rod passes through the operation hole 742 to mount the lower base 74 to the surge arrester base.
More specifically, a plurality of threaded holes are formed in the lower plug 4, a plurality of through holes are formed in the lower bracket 71, and a fastening member, which is a screw in this embodiment, penetrates through the through holes and is screwed with the threaded holes to connect the lower plug 4 and the lower bracket 71.
More specifically, the ejector rod 5 comprises a support rod and a support head, the support head serves as a working end, one end of the support rod is fixedly connected to the support head, the other end of the support rod serves as a movable end and is clamped on the pin 72, and the pressure spring 6 is sleeved on the outer side of the support rod.
Optionally, the lightning arrester housing 1 is made of epoxy resin, has good insulation and mechanical strength, and provides protection and support for the whole lightning arrester of the distribution network line.
Example two
This embodiment provides a join in marriage net twine way arrester, it further improves on the basis of first embodiment, under the operational environment of difference, the high tension current diverse that the arrester bore, the length of the bracing piece of joining in marriage net twine way arrester in this embodiment is adjustable, can be according to the actual working condition, the length of adjustment bracing piece, increase that can be appropriate or reduce the quantity of zinc oxide arrester piece 2 in the arrester shell 1, so that this join in marriage net twine way arrester is equipped with the ability of bearing different scope high tension current.
Specifically, the support rod is a conventional telescopic rod in the art, and the specific structure thereof is not described herein.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A distribution network line arrester, comprising:
the lightning arrester comprises a lightning arrester shell (1), wherein the interior of the lightning arrester shell is hollow, and two ends of the lightning arrester shell are open;
the lightning arrester comprises a plurality of zinc oxide lightning arrester pieces (2), wherein the zinc oxide lightning arrester pieces (2) are sequentially connected, installed in a lightning arrester shell (1) and axially arranged along the lightning arrester shell (1);
one end of the upper plug (3) extends into and plugs the upper end opening of the lightning arrester shell (1) and is electrically connected with the zinc oxide lightning arrester piece (2), and the other end of the upper plug (3) is electrically connected with the contact piece at the top of the lightning arrester base;
the lower end cap (4) extends into and plugs the lower end opening of the lightning arrester shell (1), and a through hole is formed in the lower end cap (4) along the axial direction;
the ejector rod (5) is provided with a movable end and a working end fixedly connected to the top of the movable end, and the movable end is connected in the through hole in a sliding manner;
the pressure spring (6) is clamped between the working end and the lower plug (4) and used for jacking and pressing the working end to be abutted against the zinc oxide lightning arrester sheet (2); and
the separating mechanism (7) is installed on the lower plug (4), in an initial state, the separating mechanism (7) is electrically connected with the contact piece at the bottom of the lightning arrester base, the separating mechanism (7) is clamped at the movable end and synchronously and axially slides in the through hole with the movable end, and when the zinc oxide lightning arrester sheet (2) thermally bursts, the movable end is driven to move towards the lower plug (4), so that the separating mechanism (7) is separated from the through hole and is separated from the movable end; the separation mechanism (7) comprises:
the lower bracket (71) is fixedly arranged on the lower plug (4);
the pin (72) can be clamped at the movable end, and the movable end can drive the pin (72) to axially slide in the through hole;
a connecting rod (73) with one end rotatably connected to the pin (72);
a lower base (74), one end of which is rotatably connected to the lower bracket (71), the other end of which is rotatably connected to the other end of the connecting rod (73), wherein a first contact part (741) is arranged on the lower base, and the first contact part (741) is electrically connected with the lightning arrester base bottom contact piece; and
the torsion spring (75) is installed at the rotating connection position of the lower support (71) and the lower base (74), one end of the torsion spring (75) abuts against the lower support (71), the other end of the torsion spring (75) abuts against the lower base (74), and when the pin (72) is pulled out of the through hole, the torsion spring (75) drives the lower support (71) and the lower base (74) to be relatively far away.
2. The lightning arrester of distribution network line according to claim 1, characterized in that the upper plug (3) comprises a top plug (31) and a top contact (32) which are connected with each other, the top plug (31) is installed at the upper opening of the lightning arrester housing (1), and the end part is provided with a conductive contact which is electrically connected with the zinc oxide lightning arrester sheet (2); and a second contact part (321) is arranged at the end part of the top contact (32), and the second contact part (321) is electrically connected with the lightning arrester base top contact piece.
3. The lightning arrester of claim 2, wherein the lower base (74) is provided with a cross shaft (743), the cross shaft (743) is rotatably mounted on the lightning arrester base, and when the second contact portion (321) and the first contact portion (741) are disengaged from the lightning arrester base top contact piece and the lightning arrester base bottom contact piece, respectively, the lower base (74) is suspended from the lightning arrester base by the cross shaft (743).
4. Distribution network line arrester according to claim 2, characterized in that the top contact (32) is provided with a pull ring (322).
5. Distribution network line arrester according to claim 1, characterized in that the lower base (74) is provided with an operating hole (742).
6. The lightning arrester of distribution network line according to claim 1, characterized in that the lower plug (4) is provided with a plurality of threaded holes, the lower bracket (71) is provided with a plurality of through holes, and a fastening member is screwed with the threaded holes through the through holes to connect the lower plug (4) and the lower bracket (71).
7. The lightning arrester of distribution network line according to claim 1, characterized in that the top rod (5) comprises a support rod and a support head, the support head is used as the working end, one end of the support rod is fixedly connected to the support head, the other end of the support rod is used as the movable end and is clamped to the pin (72), and the pressure spring (6) is sleeved outside the support rod.
8. The distribution network line arrester of claim 7, wherein the support rod is adjustable in length.
9. The lightning arrester of distribution network line according to any one of claims 1-8, characterized in that the lightning arrester housing (1) is made of epoxy resin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010852188.8A CN112018737B (en) | 2020-08-21 | 2020-08-21 | Join in marriage net twine way arrester |
| PCT/CN2020/127950 WO2022036881A1 (en) | 2020-08-21 | 2020-11-11 | Distribution network line lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010852188.8A CN112018737B (en) | 2020-08-21 | 2020-08-21 | Join in marriage net twine way arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112018737A CN112018737A (en) | 2020-12-01 |
| CN112018737B true CN112018737B (en) | 2021-06-29 |
Family
ID=73505586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010852188.8A Active CN112018737B (en) | 2020-08-21 | 2020-08-21 | Join in marriage net twine way arrester |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112018737B (en) |
| WO (1) | WO2022036881A1 (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4123636A (en) * | 1975-12-31 | 1978-10-31 | Westinghouse Electric Corp. | Double-flow puffer-type single-pressure compressed-gas circuit-interrupter |
| JPH04343201A (en) * | 1991-05-20 | 1992-11-30 | Meidensha Corp | Lightning arrester for power transmission line |
| CN2482095Y (en) * | 2001-03-13 | 2002-03-13 | 武汉大学 | Zinc oxide lightning arrester state indicator |
| CN201498289U (en) * | 2009-08-28 | 2010-06-02 | 武汉大学 | 10 KV post lightning arrester |
| CN103199483A (en) * | 2013-03-18 | 2013-07-10 | 冯长富 | Lightning arrester device capable of being dismounted and installed in charged state |
| CN203326597U (en) * | 2013-07-26 | 2013-12-04 | 河南毅达电气科技有限公司 | Disconnector built-in type overvoltage protection device |
| CN105513919B (en) * | 2014-09-23 | 2017-09-19 | 江苏省电力公司洪泽县供电公司 | A kind of easy-to-mount single-column all insulation crane |
| CN108198675A (en) * | 2018-02-08 | 2018-06-22 | 广州中光电气科技有限公司 | Lightning arrester with degradation display function and core capable of being replaced in electrified mode and overhauling method thereof |
| CN208985796U (en) * | 2018-07-04 | 2019-06-14 | 广州中光电气科技有限公司 | A kind of arrester that failure is visual |
| CN209880296U (en) * | 2019-02-25 | 2019-12-31 | 安徽乐立电气有限公司 | Composite zinc oxide lightning arrester |
| CN210430880U (en) * | 2019-08-22 | 2020-04-28 | 西安云涛电力设备有限公司 | Zinc oxide arrester connection structure |
-
2020
- 2020-08-21 CN CN202010852188.8A patent/CN112018737B/en active Active
- 2020-11-11 WO PCT/CN2020/127950 patent/WO2022036881A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN112018737A (en) | 2020-12-01 |
| WO2022036881A1 (en) | 2022-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101521065B (en) | Explosion-proof automatic releasing type lightning arrester | |
| WO2019042134A1 (en) | Circuit breaker | |
| CN201393066Y (en) | Drop-out lightning arrester | |
| CN108305731B (en) | A kind of line thunder protection device for protecting insulator to endanger from Lightning Over-voltage | |
| CN112018737B (en) | Join in marriage net twine way arrester | |
| CN201639287U (en) | All-insulated falling type arrestor with turn-over device | |
| CN210430922U (en) | Surge protector | |
| US3239631A (en) | Lightning arrester separator | |
| CN204333600U (en) | A kind of lightning protection device of high voltage supply circuit | |
| CN1170292C (en) | Automatically detaching explosion-proof lightning arrester | |
| CN112885547B (en) | Drop-out arrester for oil field | |
| CN112885548B (en) | Electromagnetic lightning arrester for oil field | |
| CN115240937A (en) | Zinc oxide lightning arrester | |
| CN112530736A (en) | Drop-out type intelligent switching-on and switching-off system and working method thereof | |
| CN217642716U (en) | Novel external fixed gap drop-out overvoltage protector capable of live working | |
| CN213340209U (en) | Overvoltage protection switch | |
| CN219418932U (en) | Drop-out quick-break switch | |
| CN118399029B (en) | Electrical safety system applied to battery short-circuit safety monitoring | |
| CN220341097U (en) | Furnace hanging scaffold knife switch operating handle | |
| CN212725150U (en) | Insulating pull rod that security performance is high | |
| CN203950770U (en) | Insulating enclosed type fuse fastening assembly | |
| CN203950776U (en) | J type hook hole insulating enclosed type fuse fastening assembly | |
| CN213026037U (en) | Drop-out quick breaker and drop-out intelligent breaking system with same | |
| CN216389253U (en) | Drop-out type high-voltage current-limiting fuse component | |
| CN211654748U (en) | Analog fuse |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |