CN107680761B - A kind of electric railway intelligent metal oxide arrester and preparation method - Google Patents
A kind of electric railway intelligent metal oxide arrester and preparation method Download PDFInfo
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- CN107680761B CN107680761B CN201710841485.0A CN201710841485A CN107680761B CN 107680761 B CN107680761 B CN 107680761B CN 201710841485 A CN201710841485 A CN 201710841485A CN 107680761 B CN107680761 B CN 107680761B
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- arrester
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- current sensor
- resistor disc
- metal oxide
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/02—Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistors with envelope or housing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/28—Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals
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- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
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- Thermistors And Varistors (AREA)
Abstract
The invention discloses a kind of intelligent metal oxide arresters of electric railway, high pressure connection electrode including being placed in arrester jacket internal top, high pressure connection electrode is provided with resistor disc column in turn below, target, current sensor and target, mounting flange is connected with positioned at nethermost target, felt pad is provided between the above and below target of current sensor and current sensor, also longitudinal direction is provided through conductive core from top to bottom for target and current sensor, measurement terminal is provided on arrester housing or mounting flange, the invention also discloses the electric railway preparation methods of intelligent metal oxide arrester, the present invention solves the problems, such as that existing arrester can not effectively distinguish inside and outside current leakage and to often result in test result error larger.
Description
Technical field
The invention belongs to railway metal oxide arrester technical fields, and in particular to a kind of electric railway intelligence
Type metal oxide arrester, the invention further relates to a kind of electric railway preparation sides of intelligent metal oxide arrester
Method.
Background technique
Arrester is as a kind of protection electric appliance, and mainly protection electrical equipment is from lightning surge and switching overvoltage
Harm.When overvoltage is more than protection of arrester level, arrester discharges first, and lightning current is introduced the earth, utilizes ground connection
It is below horizontal that lightning voltage amplitude is limited in protected device lightning impulse by device, is protected electrical equipment.
In the process of running due to often absorbing impact voltage effect, internal resistance sector-meeting gradually degrades or because close arrester
Seal structure is bad to make resistor disc make moist, and will lead to arrester damage or explosion when serious, influences system safety operation.So taking
The actual operating state that some real-time monitoring means grasp metal oxide resistance in time has very important significance.
Currently used for electric railway arrester monitoring mainly outside unit of an arrester tandem connection monitoring device come into
The monitoring of row arrester operation conditions.Unit of an arrester and monitoring device are structurally and functionally being independent in this monitoring mode
Two parts, the leakage current that monitoring device is monitored be arrester surface leakage current and internal leakage electric current, it cannot have
The truth of effect reflection arrester built-in electrical insulation, can not effectively distinguish arrester surface leakage current and internal leakage electric current.
Since the current in resistance property of lightning arrester body is smaller, deviation can be brought to test result lesser outer surface leakage current.
In order to eliminate arrester surface leakage current, power failure manual wipping arrester surface is needed before test, handles surface filth,
Live testing is carried out after electrification again.Or install shading ring additional at the umbrella cover of arrester bottom, guarantee that shading ring is in close contact housing
Surface and reliable ground allow surface leakage current to bypass by shading ring and flow into ground, separated.
In order to make tandem connection monitoring device outside unit of an arrester, the insulator of setting and ground insulation is needed such as to insulate bottom in structure
Seat or insulation column etc..Insulator foot need to be first fixed on the mounting bracket when installation, then unit of an arrester is fixed on insulation
On pedestal.The arrester of this structure is all pretty troublesome in production, installation, if pedestal insulation or insulation column failure, monitor
Device akinesia can not record discharge time and monitoring leakage electric current.
Summary of the invention
The object of the present invention is to provide a kind of intelligent metal oxide arresters of electric railway, solve existing keep away
Thunder device can not effectively distinguish inside and outside current leakage and often result in the larger problem of test result error.
It is a further object of the present invention to provide a kind of electric railway preparation sides of intelligent metal oxide arrester
Method.
First technical solution of the present invention is a kind of intelligent metal oxide arrester of electric railway,
High pressure connection electrode including being placed in arrester jacket internal top, high pressure connection electrode be provided in turn below resistor disc column,
Target, current sensor and target are connected with mounting flange positioned at nethermost target, are located at current sense
Felt pad, target and current sensor are provided between the above and below target of device and current sensor from upper
It is provided through conductive core to lower also longitudinal direction, is provided with measurement terminal on arrester housing or mounting flange.
The characteristics of first technical solution of the invention, also resides in,
Successively compact arranged resistor disc is constituted resistor disc column by several from top to bottom.
Between high pressure connection electrode, resistor disc column, target, current sensor, felt pad and arrester outer casing inner wall
It is integrally provided with insulating cylinder.
Insulating cylinder is the insulating cylinder for being close to arrester outer casing inner wall.
Insulating cylinder be wrapped in the high pressure connection electrode, resistor disc column, target, current sensor, outside felt pad
The insulating materials enclosed.
Multiple umbrella protrusions are provided with outside arrester housing, umbrella protrusion is vertically arranged with arrester outer jacket surface,
And the length of umbrella protrusion is 30mm~80mm.
Arrester housing is made of organic composite material, ceramics.
Current sensor is built-in core-theaded type current sensor, is that non-electrical is connect with resistor disc column, eliminates ground potential
Increase the influence to measuring device.
Second technical solution of the present invention is a kind of intelligent metal oxide arrester of electric railway
Preparation method is specifically implemented according to the following steps:
Step 1, by felt pad, current sensor, conductive core, target outer surface purity be 99.5% it is anhydrous
Ethyl alcohol is cleaned, its surface blot and dust are removed；
Felt pad is fixed on current sensor shell upper and lower ends by insulated screw by step 2, then by conductive core
It is passed through from inner hole, and target fixation is assembled integrally by composition measuring cell by conductive core both ends M10 screw thread；
Resistor disc is dried step 3, and controlled at 100~120 DEG C, drying time is 8 hours~12 small
When；
Step 4 successively puts the resistor disc after drying process to form resistor disc column from top to bottom, and adjusts electricity with aluminium pad
Piece column whole height is hindered, aluminium mat thickness is 5~20mm；
Insulating cylinder is made by winding process molding in glass fibre and epoxy resin by step 5, and insulating cylinder is dried
Processing, drying temperature control are 60~80 DEG C, and drying time is 4 hours~6 hours；
Arrester housing is made with organic composite material or ceramics in step 6, by insulating cylinder and arrester housing bonding at one
Insulating cylinder is placed in arrester housing by body；
Step 7, after resistor disc column is placed on measuring cell top, by the insulating cylinder and arrester housing after drying process
It covers outside resistor disc column and measuring cell；
Step 8 is divided the mounting flange of high pressure connection electrode and lower end by covering upper screw thread outside insulating cylinder or arrester
It does not fasten, while placement sealing ring or smearing Room-temperature seal glue are sealed processing at the two contact surface；
Measurement terminal is connected through a screw thread or mucilage binding mode is fixed on arrester housing side or mounting flange by step 9
On.
The characteristics of second technical solution of the invention, also resides in,
In step 5 glass fiber material be alkali-free glass fibre yarn, weight percent be insulating cylinder total weight 65~
80%, epoxy resin is high-temperature-resistant epoxy resin, and tolerable temperature is 200 DEG C~220 DEG C.
The invention has the advantages that a kind of electric railway intelligent metal oxide arrester, current sensor
It is placed in resistor disc column lower end, is separately installed with target and felt pad up and down, inside extends through conductive core, thus with
Resistor disc formed non-electrical connection type, measurement terminal is connected through a screw thread or mucilage binding mode be fixed on arrester housing side or
On mounting flange, internal signal is subjected to remote transmission to realize the measurement to arrester, monitoring function.
Detailed description of the invention
Fig. 1 is a kind of intelligent metal oxide arrester structural schematic diagram of electric railway of the invention.
In figure, 1. high pressure connection electrodes, 2. arrester housings, 3. resistor disc columns, 4. insulating cylinders, 5. targets, 6. electricity
Flow sensor, 7. mounting flanges, 8. felt pads, 9. measurement terminals, 10. conductive cores, 11. resistor discs, 12. umbrellas protrusion.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of intelligent metal oxide arrester of electric railway of the invention, structure is as shown in Figure 1, include being placed in keep away
The high pressure connection electrode 1 of 2 inner tip of thunder device housing, high pressure connection electrode 1 are provided with resistor disc column 3, intermediate electricity in turn below
Pole 5, current sensor 6 and target 5 are connected with mounting flange 7 positioned at nethermost target 5, are located at current sense
Felt pad 8, target 5 and current sense are provided between the above and below target 5 of device 6 and current sensor 6
Device 6 is also longitudinal from top to bottom to be provided through conductive core 10, is provided with measurement terminal on arrester housing 2 or mounting flange 7
9, measurement terminal 9 can be connected through a screw thread or mucilage binding mode is fixed on 2 side of arrester housing or mounting flange 7.
Successively compact arranged resistor disc 11 is constituted resistor disc column 3 by several from top to bottom.
In high pressure connection electrode 1, resistor disc column 3, target 5, current sensor 6, felt pad 8 and arrester housing 2
Insulating cylinder 4 is integrally provided between wall.
Insulating cylinder 4 is the insulating cylinder for being close to 2 inner wall of arrester housing.
Insulating cylinder 4 is to be wrapped in the high pressure connection electrode 1, resistor disc column 3, target 5, current sensor 6, insulation
The insulating materials of 8 periphery of pad.
Multiple umbrella protrusions 12 are provided with outside arrester housing 2.
Umbrella protrusion 12 outside arrester housing 2 is vertically arranged with 2 outer surface of arrester housing, and umbrella protrusion 12
Length is 30mm~80mm.
Arrester housing 2 is made of organic composite material, ceramics.
Current sensor 6 is built-in core-theaded type current sensor, is that non-electrical is connect with resistor disc column 3, eliminates ground electricity
Position increases the influence to measuring device, and current sensor 6 can be set multiple.
The electric railway preparation method of intelligent metal oxide arrester, is specifically implemented according to the following steps:
Step 1, by felt pad 8, current sensor 6, conductive core 10,5 outer surface purity of target be 99.5%
Dehydrated alcohol cleaned, remove its surface blot and dust；
Felt pad 8 is fixed on 6 shell upper and lower ends of current sensor by insulated screw by step 2, then by conductive core
Son 10 is passed through from inner hole, and the fixed composition that is assembled integrally of target 5 is measured member by 10 both ends M10 screw thread of conductive core
Part；
Resistor disc 11 is dried step 3, and controlled at 100~120 DEG C, drying time is 8 hours~12
Hour；
Step 4 successively puts the resistor disc 11 after drying process to form resistor disc column 3 from top to bottom, and with aluminium pad tune
Resistor disc column whole height is saved, aluminium mat thickness is 5~20mm；
Insulating cylinder 4 is made by winding process molding in glass fibre and epoxy resin by step 5, and insulating cylinder 4 is done
Dry processing, drying temperature control are 60~80 DEG C, and drying time is 4 hours~6 hours, wherein glass fiber material is alkali-free
Glass fiber yarn, weight percent are the 65~80% of 4 total weight of insulating cylinder, and epoxy resin is high-temperature-resistant epoxy resin, tolerance
Temperature is 200 DEG C~220 DEG C；
Arrester housing 2 is made with organic composite material or ceramics in step 6, and insulating cylinder 4 and arrester housing 2 are bonded
Integrally or insulating cylinder 4 is placed in arrester housing 2；
Step 7, after resistor disc column 3 is placed on measuring cell top, will be outside the insulating cylinder 4 and arrester after drying process
2 sets of set is outside resistor disc column 3 and measuring cell；
Step 8, by the screw thread on insulating cylinder 4 or arrester housing 2 by the mounting flange of high pressure connection electrode 1 and lower end
7 fasten respectively, while placement sealing ring or smearing Room-temperature seal glue are sealed processing at the two contact surface；
Measurement terminal 9 is connected through a screw thread or mucilage binding mode is fixed on 2 side of arrester housing or Method for Installation by step 9
On orchid 7.
A kind of intelligent metal oxide arrester of electric railway of the invention, can be with external smart by measurement terminal
Component is connected, by sensor collection to signal be sent to external smart component, then by external smart component by wirelessly passing
Defeated or wire transmission transfers data to data master station to the operating condition of the intelligent metal oxide arrester in charging operation
Carry out real-time monitoring, scent a hidden danger in time, have can real time on-line monitoring its internal leakage electric current and action frequency function, should
Arrester is highly-safe, and structure is simple, easy for installation, practical, convenient for promoting the use of.
Claims (8)
1. a kind of intelligent metal oxide arrester of electric railway, which is characterized in that including being placed in arrester housing (2)
The high pressure connection electrode (1) of inner tip, high pressure connection electrode (1) are provided with resistor disc column (3), target in turn below
(5), current sensor (6) and target (5) are located at nethermost target (5) and are connected with mounting flange (7), be located at
It is provided with felt pad (8) between current sensor (6) above and below target (5) and current sensor (6), it is described
Also longitudinal direction is provided through conductive core (10) from top to bottom for target (5) and current sensor (6), the arrester housing
(2) or on mounting flange (7) it is provided with measurement terminal (9)；The resistor disc column (3) is by several successively close-packed arrays from top to bottom
Resistor disc (11) constitute, the high pressure connection electrode (1), resistor disc column (3), target (5), current sensor (6), absolutely
Insulating cylinder (4) are integrally provided between edge pad (8) and arrester housing (2) inner wall.
2. a kind of intelligent metal oxide arrester of electric railway according to claim 1, which is characterized in that institute
Stating insulating cylinder (4) is the insulating cylinder for being close to arrester housing (2) inner wall.
3. a kind of intelligent metal oxide arrester of electric railway according to claim 1, which is characterized in that institute
State insulating cylinder (4) be wrapped in the high pressure connection electrode (1), resistor disc column (3), target (5), current sensor (6),
The insulating materials of felt pad (8) periphery.
4. a kind of intelligent metal oxide arrester of electric railway according to claim 1, which is characterized in that institute
It states and is provided with multiple umbrellas protrusions (12) outside arrester housing (2), umbrella protrusion (12) and arrester housing (2) outer surface are hung down
Straight setting, and the length of umbrella raised (12) is 30mm~80mm.
5. a kind of intelligent metal oxide arrester of electric railway according to any one of claims 1 to 4, special
Sign is that the arrester housing (2) is made of organic composite material, ceramics.
6. a kind of intelligent metal oxide arrester of electric railway according to any one of claims 1 to 4, special
Sign is that the current sensor (6) is built-in core-theaded type current sensor, is that non-electrical is connect with resistor disc column (3), eliminates
Ground potential increases the influence to measuring device.
7. a kind of electric railway preparation method of intelligent metal oxide arrester, which is characterized in that specifically according to
Lower step is implemented:
Felt pad (8), current sensor (6), conductive core (10), target (5) outer surface be by step 1 with purity
99.5% dehydrated alcohol is cleaned, its surface blot and dust are removed；
Felt pad (8) is fixed on current sensor (6) shell upper and lower ends by insulated screw by step 2, then by conductive core
Sub (10) are passed through from inner hole, and target (5) fixation is assembled integrally composition by conductive core (10) both ends M10 screw thread
Measuring cell；
Resistor disc (11) is dried step 3, and controlled at 100~120 DEG C, drying time is 8 hours~12 small
When；
Resistor disc (11) after drying process is successively put to be formed resistor disc column (3) from top to bottom by step 4, and with aluminium pad tune
Resistor disc column whole height is saved, aluminium mat thickness is 5~20mm；
Insulating cylinder (4) are made by winding process molding in glass fibre and epoxy resin by step 5, and insulating cylinder (4) is done
Dry processing, drying temperature control are 60~80 DEG C, and drying time is 4 hours~6 hours；
Arrester housing (2) are made of organic composite material or ceramics for step 6, and insulating cylinder (4) and arrester housing (2) is viscous
It is connected into one or insulating cylinder (4) is placed in arrester housing (2)；
Step 7, after resistor disc column (3) is placed on measuring cell top, will be outside the insulating cylinder (4) and arrester after drying process
Set (2) covers outside resistor disc column (3) and measuring cell；
Step 8, by the screw thread on insulating cylinder (4) or arrester housing (2) by the Method for Installation of high pressure connection electrode (1) and lower end
Blue (7) fasten respectively, while placement sealing ring or smearing Room-temperature seal glue are sealed processing at the two contact surface；
Measurement terminal (9) is connected through a screw thread or mucilage binding mode is fixed on arrester housing (2) side or Method for Installation by step 9
On blue (7).
8. a kind of preparation method of the intelligent metal oxide arrester of electric railway according to claim 7,
It is characterized in that, glass fiber material is alkali-free glass fibre yarn in the step 5, and weight percent is insulating cylinder (4) total weight
65~80%, epoxy resin is high-temperature-resistant epoxy resin, and tolerable temperature is 200 DEG C~220 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710841485.0A CN107680761B (en) | 2017-09-18 | 2017-09-18 | A kind of electric railway intelligent metal oxide arrester and preparation method |
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| CN201710841485.0A CN107680761B (en) | 2017-09-18 | 2017-09-18 | A kind of electric railway intelligent metal oxide arrester and preparation method |
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| CN107680761A CN107680761A (en) | 2018-02-09 |
| CN107680761B true CN107680761B (en) | 2019-07-02 |
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| CN113393988A (en) * | 2021-06-03 | 2021-09-14 | 中国电力科学研究院有限公司 | Arrester for inhibiting flashover of resistance card and assembling method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0549432A1 (en) * | 1991-12-20 | 1993-06-30 | Soule Materiel Electrique | Surge arrester with better mecanical properties |
| CN101866731A (en) * | 2010-02-12 | 2010-10-20 | 陕西泰普瑞电工绝缘技术有限公司 | Polymeric housed arrester and method for preparing no-local-discharge compound-glass fiber winding pipe |
| CN102012449A (en) * | 2010-11-01 | 2011-04-13 | 铜川供电局 | Wireless on-line monitoring system for zinc oxide lightning arrester of electric transmission line |
| CN104347205A (en) * | 2014-11-03 | 2015-02-11 | 浙江维思无线网络技术有限公司 | Low-cost intelligent medium-pressure composite insulation sheath zinc oxide arrester |
| CN104425091A (en) * | 2013-08-28 | 2015-03-18 | 国家电网公司 | Lightning arrester capable of monitoring wirelessly |
-
2017
- 2017-09-18 CN CN201710841485.0A patent/CN107680761B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0549432A1 (en) * | 1991-12-20 | 1993-06-30 | Soule Materiel Electrique | Surge arrester with better mecanical properties |
| CN101866731A (en) * | 2010-02-12 | 2010-10-20 | 陕西泰普瑞电工绝缘技术有限公司 | Polymeric housed arrester and method for preparing no-local-discharge compound-glass fiber winding pipe |
| CN102012449A (en) * | 2010-11-01 | 2011-04-13 | 铜川供电局 | Wireless on-line monitoring system for zinc oxide lightning arrester of electric transmission line |
| CN104425091A (en) * | 2013-08-28 | 2015-03-18 | 国家电网公司 | Lightning arrester capable of monitoring wirelessly |
| CN104347205A (en) * | 2014-11-03 | 2015-02-11 | 浙江维思无线网络技术有限公司 | Low-cost intelligent medium-pressure composite insulation sheath zinc oxide arrester |
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| CN107680761A (en) | 2018-02-09 |
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