CN2537108Y - Insulator arc-over indicator - Google Patents
Insulator arc-over indicator Download PDFInfo
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- CN2537108Y CN2537108Y CN 02205274 CN02205274U CN2537108Y CN 2537108 Y CN2537108 Y CN 2537108Y CN 02205274 CN02205274 CN 02205274 CN 02205274 U CN02205274 U CN 02205274U CN 2537108 Y CN2537108 Y CN 2537108Y
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- mandrel
- motion
- cap
- flashover
- connecting pin
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Abstract
The utility model relates to a flashover indicator of insulator, comprising a plurality of connecting parts, an electric blasting squib, a movement mechanism and a signal device, wherein, the connecting part comprises a connecting cap and a connecting pin, an insulating layer is arranged between the connecting cap and the connecting pin, the connecting cap and the connecting pin are mutually isolated and fixedly connected; the electric blasting squib can be detonated by rated current; the movement mechanism comprises a plurality of strut members, a motion trigger member, a mandrel, a spring and a connecting cap; the ; the connecting pin, the strut member, the electric blasting squib, the motion trigger member and the connecting cap are electrical conductors; the signal device is arranged on the connecting part or the movement mechanism. The utility model has the advantages that the flashover occurred on the insulator string of high voltage transmission line can be effectively recorded and indicated, the structure is simple and the interference resistance is strong, the insulation structure of prior power grid can not be changed, the safety of the prior power grid is not affected, the flashover indicator facilitates patrol persons to find the insulator string with flashover, rapidly eliminating the potential problems in the power grid.
Description
One, technical field
The utility model relates to ultra-high-tension power transmission line insulation safety operation flashover indication technical field, is a kind of insulator arc-over indicating device, is specially adapted to the indication that flashover took place high-voltage transmission line insulator.
Two, background technology
66kV (containing part 35kV) and above ultra-high-tension power transmission line, its insulation against ground is made up of suspension insulator string.Suspension insulator string can be the insulator string that is composed in series by multi-disc disk insulator sheet, also can be the insulator rod that adopts silicon rubber (or polytetrafluoroethylene).Transmission line is in service, owing to mechanical injuries, contamination, reason such as aging, the integral insulation level of insulator string is descended.Make insulator surface generation flashover or inner the puncture under overvoltage or normal working voltage effect, owing to the destruction (being the forfeiture of insulation against ground ability) of line-to-ground insulation causes the transmission line shorted to earth to cause tripping operation, power failure causes the accident.
According to scene operation statistics, the insulation fault of ultra-high-tension power transmission line and extra high voltage network is relevant with the insulator surface flashover more than 60%.May cause fault trip after the flashover, also possibility reclosing success behind the fault trip, electrical network continues normal operation, no matter which kind of situation, flashover electric arc will cause insulator surface can not self-healing permanent insulation harm, be potential insulation defect, the line-to-ground insulation level is reduced, safe operation is subjected to further threat.
The daily monitoring of transmission line, be to check by tour personnel (being generally 1 to 2 months) road along the line walking range estimation (using telescope) regularly, this type of inspection can be found more serious profile mechanical injuries, but can't find the insulation harm that insulator surface causes because of flash burn.In addition, in production run, what people urgently wished to know is, when the fault trip that is caused by insulation fault has taken place after, the fault point wherein, as occur in which the level (base) shaft tower, implement repairing so that the staff can be on the scene accurately and timely, recover as early as possible to send; To not forming fault trip (containing the reclosing success), the operations staff wishes also to know where flashover occurs in, so that in time change the insulator string that is subjected to flash burn, eliminates potential faults, recovers insulation level, improves the fail safe of operation.At present microcomputer based relay protective device has possessed the fault localization function, changed by the ground connection situation and factor affecting such as arc resistance variation but measure inaccurate, fault earthing impedance because of the circuit original impedance, causes the position of fault (distance) that is provided accurate inadequately.So far, on-the-spot still useless in the direct indication utensil of reflection insulator string flashover or fault.
Three, summary of the invention
In order to solve the problem that flashover took place for which insulator string on the ultra-high-tension power transmission line, the utility model has designed a kind of insulator arc-over indicating device.Use the utility model, after flashover took place, this insulator arc-over indicating device can move immediately, and flashover had taken place in indication, was convenient to the insulator string that the operations staff searches fault or has potential safety hazard.
The utility model solves the problems of the technologies described above by the following technical programs: this insulator arc-over indicating device comprises connector, electric detonator, motion and signalling; Connector comprises attachment cap and connecting pin, has insulating barrier and both mutually insulateds to be fixed together between attachment cap and the connecting pin; Electric detonator is a device that energy is ignited by rated current; Motion comprises strutting piece, motion deduction, mandrel, spring, hold-down head and attachment cap, mandrel and spring are installed in the working hole of attachment cap by hold-down head, Spring Card is between the boss of hold-down head and mandrel, mandrel can move forward and backward in the hole, the middle part of motion deduction is hinged on the attachment cap, one end of motion deduction withstands mandrel and holddown spring, and the top has electric detonator, strutting piece to be fixed on the connecting pin between the other end of motion deduction and the strutting piece; Connecting pin, strutting piece, electric detonator, motion deduction, attachment cap are electric conductors; Signalling is installed on connector or the motion.
Above-mentioned signalling is an indicating piece, perhaps is sensitive switch, perhaps is indicating piece and sensitive switch.
Above-mentioned indicating piece is fixed on the indication end of mandrel, and lateral pin is fixed on the mandrel, has the rotary steering groove on hold-down head, and lateral pin is stuck in the rotary steering groove, and lateral pin slided in the rotary steering groove when mandrel moved forward and backward, and forces mandrel and indicating piece to rotate.
Above-mentioned sensitive switch is installed on connector or the motion, and its mechanical contact can passive movement mechanism trigger.
Above-mentioned electric detonator comprises tube wall, pipe cap, wire and explosive substance, and pipe cap is installed in the tube wall two ends that can be scraped by explosive substance, wire places in the pipe, be connected good between wire and two pipe caps and be electric conductor all, the explosive material of filling and being sealed in the pipe in tube wall and between the wire.
The utility model is installed in insulator near between ground connection one side and the earthing component.When insulator string generation dielectric surface flashover or internal breakdown, flow through the electric current of electric detonator greater than the rated value of electric detonator electric current, the electric detonator fracture of detonating immediately under the effect of electric heating and electric arc, motion loses support, the execution under the effect of spring of the motion of insulator arc-over indicating device makes indicating piece that obvious displacement take place or/and sensitive switch changes state.The signal that the track walker sends according to signalling, or/and the light signal that sensitive switch triggered or the signal of telecommunication, promptly whether this insulator string of decidable flashover took place as: the shift in position of indicating piece (rotating or displacement).
The beneficial effects of the utility model are: the flashover on the insulator string that effectively write down, indication occurs in ultra-high-tension power transmission line, simple in structure, antijamming capability is strong, do not change the insulation system of existing electrical network, the security of operation to existing electrical network does not have any impact, be convenient to the track walker and search the insulator string that flashover took place, and eliminate potential safety hazard potential in the operation of power networks fast.
Four, description of drawings
Fig. 1: the normal condition structural representation of the utility model most preferred embodiment,
Fig. 2: the operate condition structural representation of the utility model most preferred embodiment,
Fig. 3: the normal condition scheme of installation of the utility model most preferred embodiment,
Fig. 4: the operate condition scheme of installation of the utility model most preferred embodiment,
Among the figure: (1) attachment cap, (2) connecting pin, (3) insulating barrier, (4) electric detonator, (5) strutting piece, (6) motion deduction, (7) mandrel, (8) spring, (9) hold-down head, (10) indicating piece, (11) sensitive switch, (12) lateral pin, (13) insulator string, (14) cross-arm, (15) transmission pressure, (16) shaft tower, (17) insulator arc-over indicating device, (18) electric arc.
Five, embodiment
Below in conjunction with the accompanying drawings the utility model is further described by most preferred embodiment:
Referring to Fig. 1, Fig. 2, this insulator arc-over indicating device comprises connector, electric detonator (4), motion and signalling; Connector comprises attachment cap (1) and connecting pin (2), has insulating barrier (3) and both mutually insulateds to be fixed together between attachment cap (1) and the connecting pin (2), makes attachment cap (1) and connecting pin (2) can bear mechanical load mutually insulated again; Electric detonator (4) is a device that energy is ignited by rated current; Motion comprises strutting piece (5), motion deduction (6), mandrel (7), spring (8), hold-down head (9) and attachment cap (1), mandrel (7) and spring (8) are installed in the working hole of attachment cap (1) by hold-down head (9), spring (8) is stuck between the boss of hold-down head (9) and mandrel (7), mandrel (7) can move forward and backward in working hole, the middle part of motion deduction (6) is hinged on the attachment cap (1), one end of motion deduction (6) withstands mandrel (7) and holddown spring (8), the top has electric detonator (4), strutting piece (5) to be fixed on the connecting pin (2) between the other end of motion deduction (6) and the strutting piece (5); Connecting pin (2), strutting piece (5), electric detonator (4), motion deduction (6), attachment cap (1) are electric conductors; Signalling is installed on connector or the motion.
Wherein: above-mentioned signalling can be indicating piece (10); Perhaps can be sensitive switch (11); Perhaps shown in attached Fig. 1 and 2, signalling is preferably indicating piece (10) and sensitive switch (11).
Shown in attached Fig. 1 and 2, indicating piece (10) is fixed on the indication end of mandrel (7), lateral pin (12) is fixed on the mandrel (7), on hold-down head (9), have the rotary steering groove, lateral pin (12) is stuck in the rotary steering groove, mandrel (7) when moving forward and backward lateral pin (12) in the rotary steering groove, slide, force mandrel (7) and indicating piece (10) to rotate.
Sensitive switch (11) is installed on connector or the motion, determine according to actual needs, shown in attached Fig. 1 and 2, sensitive switch (11) can be installed on the attachment cap (1) of connector, motion deduction (6) in its mechanical contact energy passive movement mechanism triggers, thereby causes light signal or signal of telecommunication starting transmission.
Electric detonator (4) is a device that energy is ignited by rated current, can determine electric detonator (4) according to actual needs, following electric detonator can be arranged: electric detonator can comprise tube wall, pipe cap, wire and explosive substance, and pipe cap is installed in the tube wall two ends that can be scraped by explosive substance, wire places in the pipe, be connected good between wire and two pipe caps and be electric conductor all, the explosive material of filling and being sealed in the pipe in tube wall and between the wire.
Shown in attached Fig. 1 and 2, above-mentioned technical characterictic has constituted most preferred embodiment of the present utility model, but the utility model is not subjected to the restriction of above-mentioned accompanying drawing and most preferred embodiment, can design specific embodiment by technique scheme according to actual conditions.
During use: shown in accompanying drawing 3 and 4, with the utility model is that insulator arc-over indicating device (17) is arranged between insulator string (13) and the cross-arm (14), the overall dimension of the overall dimension of its connector mounting part and existing insulator string (13) mounting part is in full accord, so can be installed at very easily in the existing transmission line.When flashover or internal breakdown took place insulator string (13), electric arc (18) electric current was greater than electric detonator (4) load current value, and electric detonator (4) bursts, and motion deduction (6) loses support, leaves original position.Under the effect of spring (8), mandrel (7), lateral pin (12), indicating piece (10) together move, under the restriction of rotary steering groove, lateral pin (12) slides along the rotary steering groove, cause mandrel (7) half-twist, indicating piece (10) is stood vertically, and for ease of observing, indicating piece (10) lacquer is for yellow or red; Simultaneously, after motion deduction (6) leaves original position, sensitive switch (11) change state.
The concrete course of work is described below:
1. when normal condition, as shown in Figure 1, because the support of electric detonator (4), motion deduction (6) is in " " state.Motion deduction (6) compressing mandrel (7) and sensitive switch (11) make the lateral pin (12) at middle part, mandrel (a 7) left side be in the left end of rotary steering groove, and indicating piece (10) keeps horizontal level; Make the contact of sensitive switch (11) be in " normally " state simultaneously.
2. when flashover or internal breakdown take place in insulator string (13), because electric detonator (4) is the unique path of insulator string (13) Leakage Current, the electric detonator (4) so electric arc (18) electric current is flowed through, when electric arc (18) electric current during greater than electric detonator (4) rated value, electric detonator (4) detonates and bursts, and motion deduction (6) loses support, under the effect of spring (8) promotion and gravity, motion deduction (6) is that the axle center clockwise rotates with the pin joint, contacts with strutting piece (5) until motion deduction (6).When motion deduction (6) left normal position shown in Figure 1 and begins to rotate, indicating piece (10), mandrel (7) moved to right under the effect of spring (8).In the process that moves to right, because lateral pin (12) is subjected to the restriction of rotary steering groove, make mandrel (7) around 90 ° of self axis rotations, the indicating piece (10) of mandrel (7) end is turned to vertically by level; At this moment, sensitive switch (11) change state.
3. after course of action finishes, each parts of flashover indicating device as shown in Figure 2:
Indicating piece (10) is in vertical position, and represents that flashover took place this insulator string (13);
Sensitive switch (11) is in " flashover " state, can connect luminaire or start radio device, and flashover signal is made long-distance transmissions;
Motion deduction (6) and strutting piece (5) be short circuit mutually, and when the reclosing success, this insulator string (13) can continue normally to move.
4. mechanism resets, and is in the flashover indicating device (17) under Fig. 4 state, need only motion deduction (5) is cocked, reload electric detonator (4), and promptly return to the preceding state of flashover indicating device (17) action.
As from the foregoing: electric detonator (4) is the starting component of the utility model device action, indicating piece (10) is used for the directly indication on the spot of flashover action, sensitive switch (11) change state is satisfying the requirement of flashover information subsequent transmission, and flashover indicating device (17) can reset quickly and easily.
Claims (5)
1. an insulator arc-over indicating device that is used on the ultra-high-tension power transmission line is characterized in that comprising connector, electric detonator, motion and signalling; Connector comprises attachment cap and connecting pin, has insulating barrier and both mutually insulateds to be fixed together between attachment cap and the connecting pin; Electric detonator is a device that energy is ignited by rated current; Motion comprises strutting piece, motion deduction, mandrel, spring, hold-down head and attachment cap, mandrel and spring are installed in the working hole of attachment cap by hold-down head, Spring Card is between the boss of hold-down head and mandrel, mandrel can move forward and backward in the hole, the middle part of motion deduction is hinged on the attachment cap, one end of motion deduction withstands mandrel and holddown spring, and the top has electric detonator, strutting piece to be fixed on the connecting pin between the other end of motion deduction and the strutting piece; Connecting pin, strutting piece, electric detonator, motion deduction, attachment cap are electric conductors; Signalling is installed on connector or the motion.
2. insulator arc-over indicating device according to claim 1 is characterized in that signalling is an indicating piece, perhaps is sensitive switch, perhaps is indicating piece and sensitive switch.
3. insulator arc-over indicating device according to claim 2, it is characterized in that indicating piece is fixed on the indication end of mandrel, lateral pin is fixed on the mandrel, on hold-down head, have the rotary steering groove, lateral pin is stuck in the rotary steering groove, lateral pin slided in the rotary steering groove when mandrel moved forward and backward, and forced mandrel and indicating piece to rotate.
4. insulator arc-over indicating device according to claim 2 is characterized in that sensitive switch is installed on connector or the motion, and its mechanical contact can passive movement mechanism trigger.
5. according to claim 1 or 2 or 3 or 4 described insulator arc-over indicating devices, it is characterized in that electric detonator comprises tube wall, pipe cap, wire and explosive substance, and pipe cap is installed in the tube wall two ends that can be scraped by explosive substance, wire places in the pipe, be connected good between wire and two pipe caps and be electric conductor all, the explosive material of filling and being sealed in the pipe in tube wall and between the wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02205274 CN2537108Y (en) | 2002-03-11 | 2002-03-11 | Insulator arc-over indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02205274 CN2537108Y (en) | 2002-03-11 | 2002-03-11 | Insulator arc-over indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2537108Y true CN2537108Y (en) | 2003-02-19 |
Family
ID=33686970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02205274 Expired - Fee Related CN2537108Y (en) | 2002-03-11 | 2002-03-11 | Insulator arc-over indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2537108Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114035002A (en) * | 2021-11-11 | 2022-02-11 | 国网河南省电力公司商丘供电公司 | High tension transmission line insulator safety inspection device |
| CN116819263A (en) * | 2023-08-31 | 2023-09-29 | 中铁工程设计咨询集团有限公司 | Contact net insulation flashover indicating device |
-
2002
- 2002-03-11 CN CN 02205274 patent/CN2537108Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114035002A (en) * | 2021-11-11 | 2022-02-11 | 国网河南省电力公司商丘供电公司 | High tension transmission line insulator safety inspection device |
| CN114035002B (en) * | 2021-11-11 | 2024-04-16 | 国网河南省电力公司商丘供电公司 | High tension transmission line insulator safety detection device |
| CN116819263A (en) * | 2023-08-31 | 2023-09-29 | 中铁工程设计咨询集团有限公司 | Contact net insulation flashover indicating device |
| CN116819263B (en) * | 2023-08-31 | 2024-01-19 | 中铁工程设计咨询集团有限公司 | Contact net insulation flashover indicating device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Yang Xunhong Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |