CN110400720B - Arc control device based on segmentation insulator - Google Patents
Arc control device based on segmentation insulator Download PDFInfo
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- CN110400720B CN110400720B CN201910696084.XA CN201910696084A CN110400720B CN 110400720 B CN110400720 B CN 110400720B CN 201910696084 A CN201910696084 A CN 201910696084A CN 110400720 B CN110400720 B CN 110400720B
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- arc
- arc extinguishing
- grid
- rod
- angle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/18—Section insulators; Section switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention discloses an arc extinguishing device based on a sectional insulator, and belongs to the field of sectional insulators. Including the suspension cable, the setting on the suspension cable and with suspension cable sliding connection's linear actuator, the setting is at the grid group of linear actuator output and the control group of being connected with the linear actuator, the both sides of grid group bottom are equipped with and attract the arc angle, the grid group comprises many arc extinguishing grids that set up at the linear actuator output, the interval that is equipped with mount and adjacent arc extinguishing grid on the arc extinguishing grid increases along the direction of being close to the linear actuator gradually, the interval that attracts the arc angle also increases gradually along the direction of being close to the linear actuator. On the basis of ensuring the transverse space of the arc attracting angle, the invention fully utilizes the longitudinal space of the arc attracting angle to enhance the dissociation removal of the electric arc, reduces the erosion and the thermal action of the electric arc to the electrode, protects the sectional insulator equipment and ensures the safe operation of a high-speed train.
Description
Technical Field
The invention relates to the field of breaking insulators, in particular to an arc extinguishing device based on a sectional insulator.
Background
The sectional insulator is used as important equipment for the same-phase electric section of an electrified railway contact net, can reduce the power failure range and reduce the interference to transportation when the equipment is overhauled or has a fault, and is widely applied to marshalling yards, service yards, passenger hubs and double-line electrified railways. The section insulator becomes one of key equipment of a railway transportation system, and whether the section insulator operates safely and stably becomes an important factor for safe power supply of a contact net. When the pantograph of the electric locomotive passes through the sectional insulator, the current from the previous section of contact net is cut off, the voltage at two ends of the sectional insulator can reach several kilovolts at most, the electric arc generated at the position is not easy to extinguish, and the high-temperature ablation effect of the electric arc enables the section to be often under the adverse working condition. In the existing design of the sectional insulator, the arc striking function of the arcing horn is not enough to limit the arc arcing of high voltage and large current at two ends of the arcing horn, and the arc generated by the pantograph through the sectional insulator has ablation effect on the sectional insulator for a long time, so that the safety of a traction power supply system is threatened. And with the development status of high-speed high power of the electrified railway, the voltage and current at two ends of the disjunction insulator are gradually increased, so that the arc extinguishing success of the traditional disjunction insulator is increasingly difficult.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an arc extinguishing device based on a sectional insulator, and the specific technical scheme is as follows:
the utility model provides an arc control device based on segmentation insulator, including the suspension cable, the setting on the suspension cable and with suspension cable sliding connection's linear actuator, the setting is at the grid group of linear actuator output and the control group of being connected with linear actuator, the both sides of grid group bottom are equipped with and attract the arc angle, grid group comprises the arc extinguishing bars of many settings at linear actuator output, the interval that is equipped with mount and adjacent arc extinguishing bars on the arc extinguishing bars increases along the direction of being close to linear actuator gradually, the interval that attracts the arc angle also increases along the direction of being close to linear actuator gradually.
When the pantograph passes through the breaking insulator, the high voltage and the large current at two ends of the arcing angle often generate electric arcs, and the electric arcs move along with the movement of the pantograph slide plate and are pulled away from the pantograph slide plate by one end of the arcing angle. When the sliding plate is close to the other end of the arcing angle, the electric arc is transferred to the arcing angle on the other side under the action of thermal buoyancy. During the transfer process, the electric arc enters the grid group, the electric arc is cut into short arcs with one section by the arc extinguishing grids, and each section of electric arc moves upwards under the action of the thermal buoyancy and the magnetic field of the arc extinguishing grids. When the control group monitors that electric arcs are generated at two ends of the arcing angle, the control group controls the linear driver to pull the grid bar group to move upwards. In the upward movement process of the grid bar group, the distance between the two ends of the grid bar group and the arc striking angle is gradually increased, and meanwhile, the whole electric arc continuously moves upward to be elongated and the arc intensity of the electric arc is weakened.
Preferably, the control group comprises a signal monitor connected with the arcing bar and a PLC controller connected with the linear driver, and a signal input end of the PLC controller is connected with the signal monitor.
When the signal monitor monitors that electric arcs are generated at two ends of the arcing angle, the signal monitor transmits a control signal to the PLC, and the PLC controls the linear driver to pull the grid bar group to move upwards. And in the upward movement process of the grid set, judging whether the arc is extinguished through a signal monitor, resetting the position of the grid set if the arc is extinguished, preparing for the next action, and stopping after the grid set continues to move to reach the threshold value if the arc is not extinguished.
Preferably, the signal monitor includes a voltage monitor and a current monitor.
The arc striking angle is monitored by the voltage monitor and the current monitor, so that the monitoring efficiency and the monitoring accuracy are improved.
Preferably, the arc moving angle comprises a bottom rod and an arc moving rod rotatably connected with the bottom rod, and a linear push rod connected with the PLC is arranged between the bottom rod and the arc moving rod.
In the process of upward movement of the grid bar group, the PLC controls the linear push rod to rotate the arc attracting rod, so that the angle between the bottom rod and the arc attracting rod is continuously reduced, the distance between the two ends of the grid bar group and the arc attracting rod is gradually increased, and the arc extinguishing efficiency is improved.
Preferably, the fixed end of the linear push rod is fixedly connected with the bottom rod, and the output end of the linear push rod is fixedly connected with the arc attracting rod.
According to the invention, the linear push rod is driven to pull the arc attracting rod to enable the arc attracting rod to rotate around the bottom rod, so that the angle between the arc attracting rod and the bottom rod is adjusted, and further, the distance between the two ends of the grid bar group and the arc attracting angle is adjusted.
Preferably, an adjusting suspension wire is arranged between the linear driver and the grid bar group.
Preferably, the arc-extinguishing grid bars are cylindrical in shape and are made of high-temperature-resistant and ablation-resistant materials.
The invention has the following beneficial effects:
according to the invention, the electric arc enters the grid group in the transfer process, the arc extinguishing grid cuts the electric arc into a section of short arc, and when each section of electric arc moves upwards under the action of the thermal buoyancy and the magnetic field of the arc extinguishing grid, the distance between adjacent arc extinguishing grids is opened, so that the electric arc can be extinguished more quickly, and the arc extinguishing efficiency is improved. And meanwhile, when the control group monitors that electric arcs are generated at two ends of the arcing angle, the control group controls the linear driver to pull the grid bar group to move upwards. In the upward movement process of the grid bar group, the distance between the two ends of the grid bar group and the arc attracting angle is gradually increased, and meanwhile, the arc is enabled to move upward continuously and weaken gradually, so that the arc extinguishing efficiency is further improved.
On the basis of ensuring that the transverse space of the arcing horn is certain, the longitudinal space of the sectional insulator is expanded through the movement of the grid group, the electric arc is extinguished through the expansion of the space, the arcing horn is prevented from being ablated by the electric arc for a long time, and finally the safe operation of a traction power supply system and a train is ensured. On the basis of ensuring the transverse space of the arcing horn, the longitudinal space of the arcing horn is fully utilized to enhance the dissociation removal of the electric arc, the erosion and the thermal action of the electric arc to the electrode are reduced, the sectional insulator equipment is protected, and the safe operation of a high-speed train is ensured. Meanwhile, the device is simple, independent, movable and detachable, and convenient to install and use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a control flow chart of the present invention.
In the figure: 1-a suspension cable; 2-a linear drive; 3-grid group; 4-control group; 5-arcing horn; 31-arc extinguishing bars; 32-a fixed mount; 41-signal monitor; 42-a PLC controller; 411-voltage monitor; 412-a current monitor; 51-bottom bar; 52-arcing bar; 6-linear push rod; 7-adjusting the suspension wire.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
Referring to fig. 1 to 2, the invention comprises a suspension cable 1 and two groups of linear drivers 2 which are arranged on the suspension cable 1 and are connected with the suspension cable 1 in a sliding way, and an operator can adjust the relative positions of the linear drivers 2 and the suspension cable 1 by sliding the linear drivers 2. A grid bar group 3 for arc extinction is arranged between the output ends of the two groups of linear drivers 2, and an adjusting suspension wire 7 for connection is arranged between the linear drivers 2 and the grid bar group 3. Arc striking angles 5 are arranged on two sides of the bottom end of the grid bar group 3, the grid bar group 3 is composed of a plurality of arc extinguishing grid bars 31 arranged at the output end of the linear driver 2, the arc extinguishing grid bars 31 are cylindrical, and materials adopted by the arc extinguishing grid bars 31 are high-temperature-resistant and ablation-resistant materials. The arc extinguishing bars 31 are provided with fixing frames 32, the distance between adjacent arc extinguishing bars 31 is gradually increased along the direction close to the linear driver 2, and the distance between the arc catching angles 5 is also gradually increased along the direction close to the linear driver 2.
With further reference to fig. 2, the present invention further comprises a control group 4 connected to the linear actuator 2, when the pantograph passes through the disjunction insulator, an arc is generated due to high voltage and large current at both ends of the arcing angle 5, and the arc is moved along with the pantograph slide plate, and is pulled away from the pantograph slide plate by one end of the arcing angle 5. When the skateboard approaches the other end of the arcing horn 5, the arc is transferred to the other arcing horn 5 under the action of thermal buoyancy. During the transfer process, the arc enters the grid group 3, the arc is cut into short arcs in sections by the arc extinguishing grids 31, and each section of the arc moves upwards under the action of the thermal buoyancy of the arc extinguishing grids 31 and the magnetic field. When the control group 4 detects that an arc is generated at the two ends of the arcing angle 5, the control group 4 controls the linear driver 2 to pull the grid bar group 3 to move upwards. In the upward movement process of the grid bar group 3, the distance between the two ends of the grid bar group 3 and the arc attracting angle 5 is gradually increased, and meanwhile, the whole electric arc continuously moves upward and weakens.
With further reference to fig. 2, the control group 4 comprises a signal monitor 41 connected to the arcing rod 52 and a PLC controller 42 connected to the linear actuator 2, the signal input of the PLC controller 42 being connected to the signal monitor 41. The signal monitor 41 includes a voltage monitor 411 and a current monitor 412. When an arc is generated between the arcing horn 5, current and voltage pass through the arcing horn 5, and the voltage monitor 411 and the current monitor 412 monitor the arcing horn 5, so that the monitoring efficiency and the monitoring accuracy are improved. When the signal monitor 41 monitors that electric arcs are generated at two ends of the arcing angle 5, the signal monitor 41 transmits a control signal to the PLC 42, and the PLC 42 controls the linear driver 2 to pull the grating group 3 to move upwards. During the upward movement of the grid assembly 3, the signal monitor 41 judges whether the arc is extinguished, if the arc is extinguished, the position of the grid assembly 3 is reset to prepare for the next action, and if the arc is not extinguished, the grid assembly 3 is moved to the threshold value continuously.
Further referring to fig. 1, a bottom rod 51 of the arcing horn 5, an arcing rod 52 rotatably connected with the bottom rod 51, and a linear push rod 6 connected with the PLC controller 42 are arranged between the bottom rod 51 and the arcing rod 52. The fixed end of the linear push rod 6 is fixedly connected with the bottom rod 51, and the output end of the linear push rod 6 is fixedly connected with the arc moving rod 52. According to the invention, the linear push rod 6 is driven to pull the arc moving rod 52 to enable the arc moving rod 52 to rotate around the bottom rod 51, so that the angle between the arc moving rod 52 and the bottom rod 51 is adjusted, and further the distance between the two ends of the grid set 3 and the arc moving angle 5 is adjusted. In the upward movement process of the grid set 3, the PLC controller 42 controls the linear push rod 6 to rotate the arc moving rod 52, so that the angle between the bottom rod 51 and the arc moving rod 52 is continuously reduced, the distance between the two ends of the grid set 3 and the arc moving rod 52 is gradually increased, and the arc extinguishing efficiency is improved. On the basis of ensuring the transverse space of the arc attracting angle 5, the invention fully utilizes the longitudinal space of the arc attracting angle 5 to enhance the dissociation removal of the electric arc, reduces the erosion and the thermal action of the electric arc to the electrode, protects the sectional insulator equipment and ensures the safe operation of a high-speed train. Meanwhile, the device is simple, independent, movable and detachable, and convenient to install and use.
When the pantograph passes through the breaking insulator, electric arcs are often generated due to high voltage and large current at two ends of the arc attracting angle 5, and the electric arcs are pulled away from the pantograph slide plate by one end of the arc attracting angle 5 along with the movement of the pantograph slide plate. When the skateboard approaches the other end of the arcing horn 5, the electric arc is transferred to the other end of the arcing horn 5 by the thermal buoyancy. When the arc enters the grid assembly 3 during the transfer process, the arc is cut into short arcs of one section by the arc chute 31, and each section of the arc moves upwards under the action of the thermal buoyancy of the arc chute 31 and the magnetic field. When the signal monitor 41 monitors that an arc is generated at two ends of the arcing horn 5, the signal monitor 41 transmits a control signal to the PLC controller 42, and the PLC controller 42 controls the linear driver 2 to pull the grating group 3 to move upwards. Meanwhile, the PLC 42 controls the linear push rod 6 to rotate the arc catching rod 52, so that the angle between the arc catching rod 52 and the bottom rod 51 is continuously reduced, the distance between the two ends of the grid group 3 and the arc catching angle 5 is gradually increased, and meanwhile, the whole electric arc moves upwards continuously. During the upward movement of the grid assembly 3, the signal monitor 41 determines whether the arc is extinguished. If the arc is extinguished, the positions of the grid bar groups 3 and the angle of the arcing horn 5 are reset to prepare for the next action, and if the arc is not extinguished, the linear driver 2 is continuously moved to the threshold value.
According to the invention, on the basis of ensuring that the transverse space of the arc attracting angle 5 is certain, the longitudinal space of the sectional insulator is expanded through the movement of the grid group 3, and the electric arc is extinguished through the expansion of the space, so that the arc attracting angle 5 is not ablated by the electric arc for a long time, and the safe operation of a traction power supply system and a train is finally ensured. On the basis of ensuring the transverse space of the arc attracting angle 5, the longitudinal space of the arc attracting angle 5 is fully utilized to enhance the dissociation removal of the electric arc, the erosion and the heat effect of the electric arc on the electrode are reduced, the sectional insulator equipment is protected, and the safe operation of a high-speed train is ensured. Meanwhile, the device is simple, independent, movable and detachable, and convenient to install and use.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The arc extinguishing device based on the segmented insulator is characterized by comprising a suspension rope (1), a linear driver (2) which is arranged on the suspension rope (1) and is in sliding connection with the suspension rope (1), a grid group (3) which is arranged at the output end of the linear driver (2) and a control group (4) which is connected with the linear driver (2), wherein arc striking angles (5) are arranged on two sides of the bottom end of the grid group (3), the grid group (3) is composed of a plurality of arc extinguishing grid bars (31) which are arranged at the output end of the linear driver (2), fixing frames (32) are arranged on the arc extinguishing grid bars (31), the distance between every two adjacent arc extinguishing grid bars (31) is gradually increased along the direction close to the linear driver (2), the distance between every two arc striking angles (5) is also gradually increased along the direction close to the linear driver (2),
the control group (4) comprises a signal monitor (41) connected with the arcing rod (52) and a PLC (42) connected with the linear driver (2), and a signal input end of the PLC (42) is connected with the signal monitor (41).
2. The sectionalizer-based arc extinction device of claim 1, wherein the signal monitor (41) comprises a voltage monitor (411) and a current monitor (412).
3. The arc extinguishing device based on the sectional insulator is characterized in that the arcing horn (5) comprises a bottom rod (51) and an arcing rod (52) rotatably connected with the bottom rod (51), and a linear push rod (6) connected with the PLC (42) is arranged between the bottom rod (51) and the arcing rod (52).
4. The arc extinguishing device based on the sectional insulator is characterized in that the fixed end of the linear push rod (6) is fixedly connected with the bottom rod (51), and the output end of the linear push rod (6) is fixedly connected with the arcing rod (52).
5. The sectionalizer-based arc extinguishing apparatus according to claim 1, characterized in that an adjusting suspension wire (7) is provided between the linear driver (2) and the grid group (3).
6. The arc extinguishing device based on the segmented insulator as claimed in claim 1, characterized in that the arc extinguishing bars (31) are cylindrical in shape and the material used for the arc extinguishing bars (31) is a high temperature resistant and ablation resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910696084.XA CN110400720B (en) | 2019-07-30 | 2019-07-30 | Arc control device based on segmentation insulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910696084.XA CN110400720B (en) | 2019-07-30 | 2019-07-30 | Arc control device based on segmentation insulator |
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| Publication Number | Publication Date |
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| CN110400720A CN110400720A (en) | 2019-11-01 |
| CN110400720B true CN110400720B (en) | 2020-06-23 |
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| CN201910696084.XA Active CN110400720B (en) | 2019-07-30 | 2019-07-30 | Arc control device based on segmentation insulator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364727A (en) * | 2008-06-11 | 2009-02-11 | 西南交通大学 | Overvoltage inhibiting apparatus for traction power-supply system in process of vehicle passing through phase breaking |
| CN101665086A (en) * | 2008-09-05 | 2010-03-10 | 周建科 | Bending moment-free anti-pollution high-speed segmenting and phase-splitting isolator |
| CN201528197U (en) * | 2009-07-09 | 2010-07-14 | 深圳市奇辉电气有限公司 | Contact network arc suppression control device |
| CN103241137A (en) * | 2012-02-05 | 2013-08-14 | 李东生 | Ship-shaped section insulator |
| CN209056406U (en) * | 2019-01-10 | 2019-07-02 | 邹世聪 | A kind of breaker with magnetic quenching structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3085570B1 (en) * | 2015-04-20 | 2019-12-04 | ALSTOM Transport Technologies | An electrical power supply system for an electrically propelled vehicle and methods of controlling such an electrical power supply system |
-
2019
- 2019-07-30 CN CN201910696084.XA patent/CN110400720B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364727A (en) * | 2008-06-11 | 2009-02-11 | 西南交通大学 | Overvoltage inhibiting apparatus for traction power-supply system in process of vehicle passing through phase breaking |
| CN101665086A (en) * | 2008-09-05 | 2010-03-10 | 周建科 | Bending moment-free anti-pollution high-speed segmenting and phase-splitting isolator |
| CN201528197U (en) * | 2009-07-09 | 2010-07-14 | 深圳市奇辉电气有限公司 | Contact network arc suppression control device |
| CN103241137A (en) * | 2012-02-05 | 2013-08-14 | 李东生 | Ship-shaped section insulator |
| CN209056406U (en) * | 2019-01-10 | 2019-07-02 | 邹世聪 | A kind of breaker with magnetic quenching structure |
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| CN110400720A (en) | 2019-11-01 |
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