CN116190026A - Miniaturized touchable plug-in arrester - Google Patents
Miniaturized touchable plug-in arrester Download PDFInfo
- Publication number
- CN116190026A CN116190026A CN202310081805.2A CN202310081805A CN116190026A CN 116190026 A CN116190026 A CN 116190026A CN 202310081805 A CN202310081805 A CN 202310081805A CN 116190026 A CN116190026 A CN 116190026A
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- China
- Prior art keywords
- touchable
- plug
- lightning arrester
- miniaturized
- upper electrode
- 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.)
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Links
- 238000010073 coating (rubber) Methods 0.000 claims abstract description 10
- 229920001971 elastomer Polymers 0.000 claims description 21
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 8
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 13
- 238000001746 injection moulding Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 9
- 229920002379 silicone rubber Polymers 0.000 description 8
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention belongs to the field of lightning arresters, and discloses a miniaturized touchable plug-in type lightning arrester, which comprises an upper electrode, a valve plate and a lower electrode, wherein a semiconductive rubber coating is arranged on the outer surface of the upper electrode, the valve plate and the lower electrode are formed into a lightning arrester core body through injection molding of a die, hidden defects possibly generated in the developing and production processes of the conventional inner cone touchable plug-in type lightning arrester are thoroughly eliminated from the structure of the inner cone touchable plug-in type lightning arrester, the miniaturization design of a product can be realized, the manual production is changed into the mechanized operation, the production period is greatly shortened, the product percent of pass and the batch industrial production are conveniently improved, the electrical performance and the operation stability of the product are improved, the upgrading and the updating of the product manufacturing technology are promoted, and the product quality and the service life are improved.
Description
Technical Field
The invention belongs to the field of lightning arresters, and particularly relates to a miniaturized touchable plug-in type lightning arrester.
Background
Referring to fig. 2, in the prior art, at present, the inner cone touchable pluggable lightning arrester matched with the inflatable cabinet used in the power transmission and transformation industry has the following problems in manufacturing process and structure:
1. the process of pouring liquid silicone rubber is to intensively place a batch of open molds in a closed container for vacuumizing, and pour the liquid silicone rubber while vacuumizing until the liquid silicone rubber is completely filled in the molds, then break the vacuum, cover the molds, heat and vulcanize until the molds are completely vulcanized and demolded, the whole processing period takes about 24 hours, and the whole processing period is manually operated, and the process has the following two problems: (1) The processing period is long, manual operation is adopted, resources are wasted, the production efficiency is low, and the cost performance of the product is low; (2) After breaking vacuum, manually covering a die cover, vulcanizing the liquid silicon rubber basically under the state of no pressure, so that the vulcanized rubber insulating cone 2 is poorly bonded with the surfaces of the conductive rod 1 and the lightning arrester valve plate 5 core, and dissecting to find that the bonding interface has a plurality of phenomena of partial or whole unbonded, an air gap exists in the unbonded interface, the electric field strength is inversely proportional to the dielectric constant under an alternating current field, the dielectric constant of the air gap is about 1 and is the smallest in all insulating materials, and the accident potential of surface flashover or partial breakdown can exist at the interface due to the fact that the field strength is higher.
2. In order to solve the possible air gap between the upper electrode 3 and the injection molding plastic 6 outside the valve plate 5, a semi-conductive rubber shielding cap is additionally arranged outside the injection molding plastic 6 of the upper electrode 3 and on the conducting rod 1 to shield the possible air gap between the upper electrode 3 and the injection molding plastic 6 outside the valve plate 5, and after the semi-conductive rubber shielding cap is additionally arranged, the following two problems exist: (1) After the semi-conductive shielding cap 4 is sleeved, an auxiliary vacuumizing process is needed when the liquid silicone rubber is poured, otherwise, residual gas at the inner interface of the semi-conductive shielding cap 4 is heated and expanded and then gathered at the edge of the semi-conductive shielding cap 4, the existence of the gas in the closed space can lead the liquid silicone rubber not to be vulcanized or not to be adhered, and the liquid silicone rubber is a part with high concentration of an electric field, so that the hidden danger of electric insulation exists; (2) The semiconductive shielding cap 4 is made of conductive materials under high pressure, and the semiconductive shielding cap 4 is required to be formed by a certain thickness, after the semiconductive shielding cap 4 is added, thermosetting plastics which are injected outside the upper electrode 3 are shielded, the insulation function is lost, meanwhile, the semiconductive shielding cap 4 is provided with a certain thickness, in order to ensure the electrical insulation strength requirement of the whole product, the thickness of the insulation materials which are arranged outside the semiconductive shielding cap 4 in the radial direction and the axial direction is greatly increased, after the semiconductive shielding cap 4 is added, the air gap between the upper electrode 3 and the injection molding plastics 6 is shielded, the problem of partial discharge of the product is solved, but the electric field distortion of the high-voltage part is caused, and meanwhile, the radial and axial insulation thickness of the part is required to be correspondingly increased, so that the miniaturization of the product cannot be realized.
Disclosure of Invention
In order to solve the technical problems, the invention provides a miniaturized touchable plug-in type lightning arrester, so as to solve the problems in the prior art, and in order to achieve the purposes of the invention, the invention adopts the following technical scheme:
a miniaturized touchable plug-in arrester comprises an upper electrode, a valve plate and a lower electrode;
the outer surface of the upper electrode is provided with a semiconductive rubber coating;
the upper electrode, the valve plate and the lower electrode are formed into a lightning arrester core body through injection molding of a mold.
Further, the upper electrode is connected with a conducting rod.
Further, the lightning arrester further comprises a rubber insulating layer, wherein the rubber insulating layer wraps the lightning arrester core body and the conducting rod.
Further, the rubber insulating layer is a rubber insulating cone.
Further, the conductive rod passes through the semiconductive rubber coating.
Further, the lower electrode is connected with a directional arc spraying port.
Further, the lightning arrester core body is located in the shell, and the directional arc spraying port is formed in one end of the shell.
Further, the lightning arrester core body is a zinc oxide lightning arrester core body.
The invention has the following beneficial effects: the inner cone touch pluggable arrester thoroughly eliminates hidden defects possibly generated in the developing and producing processes of the traditional inner cone touch pluggable arrester structurally, not only can realize the miniaturization design of products, but also can be manually produced and upgraded into mechanized operation, thereby greatly shortening the production period and being convenient for improving the product qualification rate and the batch industrial production. The electrical performance and the operation stability of the product are improved, the upgrading and the updating of the product manufacturing technology are promoted, and the product quality and the operation life are improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a prior art schematic;
in fig. 1: 1. the conductive rod, 2, the rubber insulating cone, 3, the upper electrode, 4, the semiconductive rubber coating, 5, the valve block, 6, the injection molding plastic, 7, the lower electrode, 8, the directional arc spraying port;
in fig. 2: 1. the device comprises a conducting rod, 2, a rubber insulating cone, 3, an upper electrode, 4, a semiconductive shielding cap, 5, a valve plate, 6, injection molding plastic, 7 and a lower electrode.
Description of the embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 2 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments, and technical means used in the embodiments are conventional means known to those skilled in the art unless specifically indicated.
A miniaturized touchable plug-in arrester, characterized in that: the device comprises an upper electrode 3, a valve plate 5 and a lower electrode 7 which are sequentially arranged, wherein a plurality of valve plates 5 are arranged side by side;
the outer surface of the upper electrode 3 is provided with a semiconductive rubber coating 4;
the upper electrode 3, the valve plate 5 and the lower electrode 7 are formed into a lightning arrester core body through die injection molding.
The semi-conductive rubber coating 4 replaces the semi-conductive shielding cap in the prior art, so that the technical step of vacuumizing the semi-conductive shielding cap can be omitted, and hidden defects such as air gaps, interface adhesion and the like possibly generated in the development and production processes of the conventional inner cone touch pluggable lightning arrester are thoroughly eliminated from the aspects of structure and technology.
Further, the upper electrode 3 is connected to the conductive rod 1.
Further, the lightning arrester further comprises a rubber insulating layer, wherein the rubber insulating layer wraps the lightning arrester core body and the conducting rod 1.
Further, the rubber insulating layer is a rubber insulating cone 2.
The rubber insulation cone 2 is annular, and one end of the rubber insulation cone, which is far away from the conducting rod 1, is conical, one end of the conducting rod 1 is fixedly connected with the upper electrode 3, and the other end of the rubber insulation cone is connected with a conducting joint on the shell.
Further, the conductive rod 1 passes through the semiconductive rubber coating 4.
Further, the lower electrode 7 is connected with a directional arc spraying port 8, the directional arc spraying port 8 is in the prior art, once the lightning arrester equipment fails, the path and the direction of the release of the internal pressure can be controlled, secondary damage to surrounding equipment is avoided, and the lightning arrester is environment-friendly.
Further, the lightning arrester core body is located in the shell, and the directional arc spraying port 8 is arranged at one end of the shell.
Further, the lightning arrester core body is a zinc oxide lightning arrester core body, namely the upper electrode 3, the valve plate 5 and the lower electrode 7 are made of zinc oxide.
The invention also includes a method of manufacturing a lightning arrester, the method comprising:
firstly, pre-treating the outer surface of an upper electrode 3 before injection molding, wherein the pre-treatment comprises sand blasting treatment, degreasing and decontamination drying treatment;
step two, the upper electrode 3, the valve plate 5 and the lower electrode 7 are firstly injection molded on a die to form a zinc oxide arrester core body;
step three, uniformly coating a layer of liquid semi-conductive rubber material on the outer surface of the upper electrode 3;
step four, heating and vulcanizing the zinc oxide arrester core body in an oven to form a semiconductive rubber coating 4, wherein the resistance of the vulcanized semiconductive material is less than 2000 ohms;
step five, uniformly brushing a coupling agent outside the conducting rod 1 and the heated and vulcanized lightning arrester core body, and drying in a drying oven;
step six, connecting the lightning arrester core body and the conducting rod 1, putting the lightning arrester core body and the conducting rod into a half-structured die, pressurizing and closing the die by a hydraulic closing machine, and injecting liquid silicone rubber to form a shell and a rubber insulation cone 2;
and seventhly, heating, maintaining pressure and vulcanizing after filling, and demolding after 3 hours.
The whole process does not need to be vacuumized, and the injection and vulcanization molding are carried out on the machine once.
Through finite element analysis and practical verification, the insulation margin can be improved by about 30% under the condition that the structural design diameter D1 of the inner cone touchable pluggable lightning arrester is smaller than or equal to the original structural design diameter D. Meanwhile, the structural design length L1 of the inner cone touchable pluggable lightning arrester can be far smaller than the original structural design diameter L, and the miniaturization design of products can be realized.
Through finite element analysis and practical verification, the insulation margin can be improved by about 30% under the condition that the structural design diameter D1 of the inner cone touchable pluggable lightning arrester is smaller than or equal to the original structural design diameter D. Meanwhile, the structural design length L1 of the inner cone touchable pluggable lightning arrester can be far smaller than the original structural design diameter L, and the miniaturization design of products can be realized.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications, variations, alterations, substitutions made by those skilled in the art to the technical solution of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (8)
1. A miniaturized touchable plug-in arrester, characterized in that: comprises an upper electrode (3), a valve plate (5) and a lower electrode (7);
the outer surface of the upper electrode (3) is provided with a semiconductive rubber coating (4);
the upper electrode (3), the valve plate (5) and the lower electrode (7) are formed into a lightning arrester core body through die injection.
2. A miniaturized touchable plug arrester according to claim 1, characterized in that: the upper electrode (3) is connected with the conducting rod (1).
3. A miniaturized touchable plug arrester according to claim 2, characterized in that: the lightning arrester further comprises a rubber insulating layer, wherein the rubber insulating layer wraps the lightning arrester core body and the conducting rod (1).
4. A miniaturized touchable plug arrester according to claim 3, characterized in that: the rubber insulating layer is a rubber insulating cone (2).
5. A miniaturized touchable plug arrester according to claim 2, characterized in that: the conductive rod (1) passes through the semiconductive rubber coating (4).
6. A miniaturized touchable plug arrester according to claim 1, characterized in that: the lower electrode (7) is connected with a directional arc spraying port (8).
7. A miniaturized touchable plug arrester according to claim 6, wherein: the lightning arrester core body is located in the shell, and the directional arc spraying port (8) is arranged at one end of the shell.
8. A miniaturized touchable plug arrester according to claim 1, characterized in that: the lightning arrester core body is a zinc oxide lightning arrester core body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310081805.2A CN116190026B (en) | 2023-02-08 | 2023-02-08 | Miniaturized touchable plug-in arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310081805.2A CN116190026B (en) | 2023-02-08 | 2023-02-08 | Miniaturized touchable plug-in arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116190026A true CN116190026A (en) | 2023-05-30 |
| CN116190026B CN116190026B (en) | 2023-11-24 |
Family
ID=86435938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310081805.2A Active CN116190026B (en) | 2023-02-08 | 2023-02-08 | Miniaturized touchable plug-in arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116190026B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063980A (en) * | 2009-11-13 | 2011-05-18 | 西安神电电器有限公司 | Plug-in arrester molded by vulcanization |
| CN102063983A (en) * | 2009-11-13 | 2011-05-18 | 西安神电电器有限公司 | Plug-in arrester formed through encapsulation |
| CN102063986A (en) * | 2009-11-13 | 2011-05-18 | 西安神电电器有限公司 | Direct plug-in type shielding cover for plug-and-play arrestor |
| CN203521081U (en) * | 2013-10-10 | 2014-04-02 | 广东吉熙安电缆附件有限公司 | Inner cone plug-in lightning arrester |
| JP2016021843A (en) * | 2014-07-16 | 2016-02-04 | 株式会社ビスキャス | Rubber insulator and manufacturing method thereof |
-
2023
- 2023-02-08 CN CN202310081805.2A patent/CN116190026B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063980A (en) * | 2009-11-13 | 2011-05-18 | 西安神电电器有限公司 | Plug-in arrester molded by vulcanization |
| CN102063983A (en) * | 2009-11-13 | 2011-05-18 | 西安神电电器有限公司 | Plug-in arrester formed through encapsulation |
| CN102063986A (en) * | 2009-11-13 | 2011-05-18 | 西安神电电器有限公司 | Direct plug-in type shielding cover for plug-and-play arrestor |
| CN203521081U (en) * | 2013-10-10 | 2014-04-02 | 广东吉熙安电缆附件有限公司 | Inner cone plug-in lightning arrester |
| JP2016021843A (en) * | 2014-07-16 | 2016-02-04 | 株式会社ビスキャス | Rubber insulator and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116190026B (en) | 2023-11-24 |
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