CN110333441B - An optical fiber-based switch state detection device for high-voltage power grids in coal mines - Google Patents
An optical fiber-based switch state detection device for high-voltage power grids in coal mines Download PDFInfo
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- CN110333441B CN110333441B CN201910691147.2A CN201910691147A CN110333441B CN 110333441 B CN110333441 B CN 110333441B CN 201910691147 A CN201910691147 A CN 201910691147A CN 110333441 B CN110333441 B CN 110333441B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
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Abstract
本发明属于电力系统监控领域，具体的说是一种基于光纤的煤矿高压电网开关状态检测装置；包括开关底座、转动绝缘子、一号绝缘子、二号绝缘子、开关触头和指示单元；所述转动绝缘子、一号绝缘子和二号绝缘子分别固定在开关底座上，且转动绝缘子位于一号绝缘子和二号绝缘子之间；所述开关触头端部铰接在一号绝缘子顶端；所述二号绝缘子内开有柱形空腔；所述柱形空腔内设有液压油和活塞杆；所述活塞杆一端伸出二号绝缘子顶端，活塞杆另一端位于柱形空腔内且对柱形空腔底部空间密封；所述液压油位于活塞杆和柱形空腔之间的密封空间内；通过一号绝缘子、二号绝缘子、开关触头和指示单元的配合实现通过指示盘判断开关是否闭合。
The invention belongs to the field of power system monitoring, in particular to an optical fiber-based switch state detection device for a coal mine high-voltage power grid; comprising a switch base, a rotating insulator, a No. 1 insulator, a No. 2 insulator, a switch contact and an indicating unit; the rotating The insulator, the No. 1 insulator and the No. 2 insulator are respectively fixed on the switch base, and the rotating insulator is located between the No. 1 insulator and the No. 2 insulator; the end of the switch contact is hinged to the top of the No. 1 insulator; the inside of the No. 2 insulator A cylindrical cavity is opened; hydraulic oil and a piston rod are arranged in the cylindrical cavity; one end of the piston rod protrudes from the top of the No. 2 insulator, and the other end of the piston rod is located in the cylindrical cavity and faces the cylindrical cavity. The bottom space is sealed; the hydraulic oil is located in the sealed space between the piston rod and the cylindrical cavity; through the cooperation of the No. 1 insulator, the No. 2 insulator, the switch contact and the indicating unit, it is possible to judge whether the switch is closed through the indicating plate.
Description
Technical Field
The invention belongs to the field of power system monitoring, and particularly relates to a coal mine high-voltage power grid switch state detection device based on optical fibers.
Background
With the continuous development of coal mine enterprises, the demand of coal mine equipment is more and more, and the orderly operation of the coal mine equipment needs a power supply system to provide necessary power resources; however, in the actual work of coal mine enterprises, once the power failure problem occurs, the smooth operation of coal mine production is influenced, and even certain potential safety hazard is brought; thereby reasons such as excessive pressure, overcurrent and contact generate heat in the high-voltage switch make the power supply line temperature rise very easily and form danger, in order to avoid this phenomenon, improve the power supply reliability, need detect the high-voltage switch state for the staff just can observe the high-voltage switch state through the indicator panel at contactless switch.
Disclosure of Invention
In order to make up the defects of the prior art, the problem that the state of a high-voltage switch can be observed by a worker through an indicating disc without contacting the switch is solved; the invention provides a coal mine high-voltage power grid switch state detection device based on optical fibers.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a coal mine high-voltage power grid switch state detection device based on optical fibers, which comprises a switch base, a rotary insulator, a first insulator, a second insulator, a switch contact and an indication unit, wherein the rotary insulator is arranged on the switch base; the rotary insulator, the first insulator and the second insulator are respectively fixed on the switch base, and the rotary insulator is positioned between the first insulator and the second insulator; the end part of the switch contact is hinged to the top end of the first insulator; a cylindrical cavity is formed in the second insulator; hydraulic oil and a piston rod are arranged in the cylindrical cavity; one end of the piston rod extends out of the top end of the second insulator, and the other end of the piston rod is positioned in the cylindrical cavity and seals the bottom space of the cylindrical cavity; the hydraulic oil is positioned in a sealed space between the piston rod and the cylindrical cavity; the indicating unit comprises an oil pipe, an indicating disc, a pointer and a swinging rod; a fan-shaped cavity is formed in the indicating disc; the end part of the swing rod is hinged at the circle center of the fan-shaped cavity, and the fan-shaped cavities on the two sides of the swing rod are not communicated with each other; one end of the oil pipe is connected with the sealed space in the cylindrical cavity, and the other end of the oil pipe is connected with the fan-shaped cavity on one side of the oscillating rod; the pointer is positioned on the surface of the indicating disc and is coaxially connected with the swinging rod; the surface of the indicating disc is divided into a separating area, an approaching area and a closed area according to the swing amplitude of the pointer; whether the switch is closed or not is judged through an indicating disc through the cooperation of the rotary insulator, the first insulator, the second insulator, the switch contact and the indicating unit; when the device works, if the switch is not closed, hydraulic oil is placed in the cylindrical cavity, the swinging rod swings towards the direction close to the oil pipe, and the pointer is driven to rotate to the separation area; when the switch is to be completely closed, the switch contact extrudes the piston rod downwards, so that hydraulic oil flows into the fan-shaped cavity from the cylindrical cavity through the oil pipe, the swing rod swings in the direction far away from the oil pipe, and the pointer is driven to rotate to the approach area; when the switch is completely closed, the hydraulic oil in the cylindrical cavity continuously flows into the fan-shaped cavity, so that the swinging rod continuously swings until the pointer rotates to the closed area; in the process, the fact that a worker can observe the closing condition of the switch only through the indicating disc without opening the distribution box is achieved, the occurrence of dangerous accidents is reduced, and the working efficiency of the worker is improved; wherein, the optimal model of the hydraulic oil is CPI-4608-32.
Preferably, a storage cavity is arranged inside the piston rod; the storage cavity is filled with ethanol liquid; an air pipe is arranged between the storage cavity and the fan-shaped cavity; one end of the air pipe is connected with the storage cavity, and the other end of the air pipe is connected with the fan-shaped cavity connected with the oil pipe; an alarm area is arranged on the surface of the indicating disc in the area adjacent to the closed area; whether contact is poor or not is judged through the indicating disc after the switch is closed through the matching of the storage cavity, the air pipe and the indicating unit; when the device works, if the switch is closed and then the contact is poor, a large amount of heat is generated, so that ethanol liquid in the piston rod is heated and volatilized into ethanol gas, the ethanol gas is transmitted into the fan-shaped cavity through the air pipe, the swinging rod is pushed to continuously swing, and the pointer is driven to continuously swing until the pointer swings to the alarm area; whether contact failure has appeared after the closure for the staff can observe the switch through the dial, and need not open the block terminal, avoids being scalded by the high temperature that switch contact failure produced, has reduced the probability that dangerous accident takes place to staff's work efficiency has been improved.
Preferably, a bell is sleeved on the air pipe; whether the contact is poor or not is judged by sound after the switch is closed through the matching of the air pipe and the bell; the during operation, if the condition of contact failure takes place after the switch closure, can produce a large amount of heats, make the ethanol liquid in the piston rod be heated and volatilize into the ethanol gas, the ethanol gas passes through in trachea transmission to fan-shaped cavity, pass through the in-process of trachea transmission at the ethanol gas, make the trachea take place to shake from top to bottom, thereby it produces the ringtone to drive the jingle bell after taking place to shake, make staff's accessible ringtone judge out the switch whether the condition of contact failure has appeared after the closure, the operating time that staff detected the switch closure state has been practiced thrift, and the work efficiency is improved.
Preferably, an arc extinguishing cover is arranged at the top end of the second insulator; the bottom end of the arc extinguishing cover is connected with the top end of the second insulator through a spring; the arc extinguishing cover avoids the arc phenomenon between the switch contact and the second insulator; when the switch is in work, high-voltage electric arcs can be generated between the switch contact and the second insulator in the process that the switch is to be closed, and the danger is high, so that the arc extinguishing cover arranged at the top end of the second insulator can effectively avoid the phenomenon of electric arcs between the switch contact and the second insulator; the probability of dangerous accidents is reduced; wherein the optimal model of the arc extinguishing chamber is HD 13-400A.
Preferably, the top end of the second insulator is provided with an air hole; the gas in the cylindrical cavity is sprayed out through the air holes through the matching of the piston rod and the air holes; during operation, part of coal slag can remain on the top end of the second insulator, and safety accidents can be easily caused, so that the top end of the second insulator is provided with an air hole, when the switch is opened and closed, gas in the cylindrical cavity can be sprayed out through the air hole to clean the top surface of the second insulator, and the residue of the coal slag on the top surface of the second insulator is avoided.
Preferably, a brush is arranged between the interlayers of the arc extinguishing covers; the brush is fixed between the interlayers of the arc extinguishing covers through the rotating shaft; the interlayer of the arc-extinguishing shield is cleaned through the matching of the air holes and the hairbrush; during operation, partial coal mine sediment can fall into the intermediate layer of arc-extinguish chamber to influence the arc extinguishing effect of arc-extinguish chamber, consequently, be equipped with the brush between the intermediate layer of arc-extinguish chamber, when gaseous blowout from the cylindricality cavity in, blow the brush and rotate, realized avoiding the arc-extinguish chamber to lose efficacy to the intraformational clean effect of arc-extinguish chamber intermediate layer, thereby produce electric arc near the switch, cause danger.
The invention has the following beneficial effects:
1. according to the coal mine high-voltage power grid switch state detection device based on the optical fibers, whether the switch is closed or not is judged through the indicating disc through the cooperation of the first insulator, the second insulator, the switch contact and the indicating unit, so that a worker can observe the closing condition of the switch through the indicating disc, dangerous accidents are reduced, and the working efficiency of the worker is improved.
2. According to the coal mine high-voltage power grid switch state detection device based on the optical fibers, the arc extinguishing cover is arranged at the top end of the second insulator, so that an arc phenomenon between the switch contact and the second insulator is avoided, and the probability of dangerous accidents of workers in the working process is reduced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
figure 3 is a schematic view of the structure of the arc chute of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
in the figure: the switch comprises a switch base 1, a rotating insulator 2, a first insulator 3, a second insulator 4, a cylindrical cavity 41, a piston rod 42, a storage cavity 421, ethanol liquid 422, an air pipe 423, a bell 424, hydraulic oil 43, an air hole 44, a switch contact 5, an indicating unit 6, an oil pipe 61, an indicating disc 62, a fan-shaped cavity 621, a separating area 622, an approaching area 623, a closing area 624, an alarm area 625, a swinging rod 63, a pointer 64, an arc extinguishing cover 7 and a brush 71.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the device for detecting the switch state of the high-voltage power grid for the coal mine based on the optical fiber comprises a switch base 1, a rotary insulator 2, a first insulator 3, a second insulator 4, a switch contact 5 and an indicating unit 6; the rotary insulator 2, the first insulator 3 and the second insulator 4 are respectively fixed on the switch base 1, and the rotary insulator 2 is positioned between the first insulator 3 and the second insulator 4; the end part of the switch contact 5 is hinged to the top end of the first insulator 3; a cylindrical cavity 41 is formed in the second insulator 4; hydraulic oil 43 and a piston rod 42 are arranged in the cylindrical cavity 41; one end of the piston rod 42 extends out of the top end of the second insulator 4, and the other end of the piston rod 42 is positioned in the cylindrical cavity 41 and seals the bottom space of the cylindrical cavity 41; the hydraulic oil 43 is positioned in the sealed space between the piston rod 42 and the cylindrical cavity 41; the indicating unit 6 comprises an oil pipe 61, an indicating disc 62, a pointer 64 and a swinging rod 63; a fan-shaped cavity 621 is formed in the indicating disc 62; the end part of the swinging rod 63 is hinged at the circle center of the fan-shaped cavity 621, and the fan-shaped cavities 621 on two sides of the swinging rod 63 are not communicated with each other; one end of the oil pipe 61 is connected with the sealed space in the cylindrical cavity 41, and the other end is connected with the fan-shaped cavity 621 on one side of the oscillating rod 63; the pointer 64 is positioned on the surface of the indicating plate 62, and the pointer 64 is coaxially connected with the swinging rod 63; the surface of the indicating dial 62 is divided into a divided area 622, an approaching area 623 and a closed area 624 according to the swing amplitude of the pointer 64; whether the switch is closed or not is judged through the indicating disc 62 by matching the rotary insulator 2, the first insulator 3, the second insulator 4, the switch contact 5 and the indicating unit 6; when the oil pipe hydraulic pressure meter works, if the switch is not closed, the hydraulic oil 43 is placed in the cylindrical cavity 41, the swinging rod 63 swings towards the direction close to the oil pipe 61, and the pointer 64 is driven to rotate to the separation area 622; when the switch is to be completely closed, the switch contact 5 extrudes the piston rod 42 downwards, so that the hydraulic oil 43 flows from the cylindrical cavity 41 to the fan-shaped cavity 621 through the oil pipe 61, the swinging rod 63 swings in a direction away from the oil pipe 61, and the pointer 64 is driven to rotate to the approaching area 623; when the switch is completely closed, the hydraulic oil 43 in the cylindrical cavity 41 continues to flow into the fan-shaped cavity 621, so that the swinging rod 63 continues to swing until the pointer 64 rotates to the closed region 624; in the process, the fact that the closing condition of the switch can be observed only through the indicating disc 62 without opening the distribution box by workers is achieved, the occurrence of dangerous accidents is reduced, and the working efficiency of the workers is improved; wherein, the optimal model of the hydraulic oil 43 is CPI-4608-32.
As an embodiment of the present invention, the piston rod 42 is provided with a storage chamber 421 inside; the storage cavity 421 is filled with ethanol liquid 422; an air pipe 423 is arranged between the storage cavity 421 and the fan-shaped cavity 621; one end of the air pipe 423 is connected with the storage cavity 421, and the other end is connected with the fan-shaped cavity 621 connected with the oil pipe 61; the surface of the indicator panel 62 is provided with an alarm zone 625 adjacent to the closure zone 624; whether the contact is poor after the switch is closed is judged through the indicating disc 62 by the matching of the storage cavity 421, the air pipe 423 and the indicating unit 6; when the device works, if the contact failure occurs after the switch is closed, a large amount of heat is generated, so that the ethanol liquid 422 in the piston rod 42 is heated and volatilized into ethanol gas, the ethanol gas is transmitted into the fan-shaped cavity 621 through the air pipe 423, the swinging rod 63 is pushed to continuously swing, and the pointer 64 is driven to continuously swing until the pointer 64 swings to the alarm area 625; whether the condition of contact failure has appeared after making the staff can observe the switch through dial 62 and close, and need not open the block terminal, avoid being scalded by the high temperature that the switch contact failure produced, reduced the probability that dangerous accident takes place to staff's work efficiency has been improved.
In one embodiment of the present invention, a bell 424 is sleeved on the air tube 423; whether the contact is poor or not is judged by sound after the switch is closed through the matching of the air pipe 423 and the bell 424; in operation, if the condition of contact failure takes place after the switch closure, can produce a large amount of heats, make ethanol liquid 422 in the piston rod 42 heated and volatilize into ethanol gas, ethanol gas transmits to fan-shaped cavity 621 in through trachea 423, at the in-process that ethanol gas passes through trachea 423 transmission, make trachea 423 take place to shake from top to bottom, thereby it produces the ringtone after shaking to drive ringtone 424, make staff's accessible ringtone judge out the switch whether the condition of contact failure has appeared after the closure, the operating time that staff detected the switch closure state has been practiced thrift, and the work efficiency is improved.
As an embodiment of the invention, an arc extinguishing cover 7 is arranged at the top end of the second insulator 4; the bottom end of the arc extinguishing cover 7 is connected with the top end of the second insulator 4 through a spring; the arc-extinguishing cover 7 avoids the arc phenomenon between the switch contact 5 and the second insulator 4; when the switch works, in the process that the switch is to be closed, high-voltage electric arcs can be generated between the switch contact 5 and the second insulator 4, and the danger is high, so that the arc extinguishing cover 7 arranged at the top end of the second insulator 4 can effectively avoid the phenomenon of electric arcs between the switch contact 5 and the second insulator 4; the probability of dangerous accidents is reduced; wherein the optimal model of the arc extinguishing chamber 7 is HD 13-400A.
In one embodiment of the present invention, the top end of the second insulator 4 is provided with an air hole 44; the gas in the cylindrical cavity 41 is sprayed out through the air hole 44 through the matching of the piston rod 42 and the air hole 44; during operation, partial coal cinder can remain on No. two insulator 4 tops, very easily can produce the incident, consequently opens No. two insulator 4 tops has gas pocket 44, opens and closes the in-process when the switch, and the gas in the cylindricality cavity 41 can be through gas pocket 44 blowout, carries out cleaning effect to No. two insulator 4 top surfaces, avoids the coal cinder at No. two insulator 4 top surface's remain.
As an embodiment of the present invention, a brush 71 is disposed between the interlayers of the arc-extinguishing chamber 7; the brush 71 is fixed between the interlayers of the arc extinguishing cover 7 through a rotating shaft; the interlayer of the arc-extinguishing cover 7 is cleaned through the matching of the air holes 44 and the brushes 71; during operation, partial coal mine sediment can fall into the intermediate layer of arc-extinguishing chamber 7 to influence the arc extinguishing effect of arc-extinguishing chamber 7, consequently, be equipped with brush 71 between the intermediate layer of arc-extinguishing chamber 7, when gaseous blowout from cylindricality cavity 41, blow brush 71 and rotate, realized avoiding the arc-extinguishing chamber 7 to lose efficacy to the clean effect in the intermediate layer of arc-extinguishing chamber 7, thereby produce electric arc near the switch, cause danger.
When the oil pipe hydraulic pressure meter works, if the switch is not closed, the hydraulic oil 43 is placed in the cylindrical cavity 41, the swinging rod 63 swings towards the direction close to the oil pipe 61, and the pointer 64 is driven to rotate to the separation area 622; when the switch is to be completely closed, the switch contact 5 extrudes the piston rod 42 downwards, so that the hydraulic oil 43 flows from the cylindrical cavity 41 to the fan-shaped cavity 621 through the oil pipe 61, the swinging rod 63 swings in a direction away from the oil pipe 61, and the pointer 64 is driven to rotate to the approaching area 623; when the switch is completely closed, the hydraulic oil 43 in the cylindrical cavity 41 continues to flow into the fan-shaped cavity 621, so that the swinging rod 63 continues to swing until the pointer 64 rotates to the closed region 624; in the process, the fact that the closing condition of the switch can be observed only through the indicating disc 62 without opening the distribution box by workers is achieved, the occurrence of dangerous accidents is reduced, and the working efficiency of the workers is improved; wherein the optimal model of the hydraulic oil 43 is CPI-4608-32; if the contact failure occurs after the switch is closed, a large amount of heat is generated, so that the ethanol liquid 422 in the piston rod 42 is heated and volatilized into ethanol gas, the ethanol gas is transmitted into the fan-shaped cavity 621 through the air pipe 423, the swinging rod 63 is pushed to continuously swing, and the pointer 64 is driven to continuously swing until the pointer 64 swings to the alarm area 625; the condition that whether the switch is in poor contact or not can be observed by the worker through the indicating disc 62 without opening the distribution box, so that high-temperature scalding caused by poor contact of the switch is avoided, the probability of dangerous accidents is reduced, and the working efficiency of the worker is improved; if the switch is in a poor contact state after being closed, a large amount of heat is generated, so that the ethanol liquid 422 in the piston rod 42 is heated and volatilized into ethanol gas, the ethanol gas is transmitted into the fan-shaped cavity 621 through the air pipe 423, the air pipe 423 shakes up and down in the process of transmitting the ethanol gas through the air pipe 423, the bell 424 is driven to shake to generate bell sound, a worker can judge whether the switch is in a poor contact state after being closed through the bell sound, the working time of the worker for detecting the closed state of the switch is saved, and the working efficiency is improved; in the process of transmitting the ethanol gas through the gas pipe 423, the gas pipe 423 shakes up and down, so that the bells 424 are driven to shake to generate bells, workers can judge whether the switch is in poor contact after being closed through the bells, the working time of the workers for detecting the closed state of the switch is saved, and the working efficiency is improved; in the process that the switch is to be closed, high-voltage electric arcs can be generated between the switch contact 5 and the second insulator 4, and the danger is high, so that the arc extinguishing cover 7 arranged at the top end of the second insulator 4 can effectively avoid the phenomenon of electric arcs between the switch contact 5 and the second insulator 4; the probability of dangerous accidents is reduced; wherein, the optimal model of the arc extinguishing chamber 7 is HD 13-400A; because part of the coal slag can remain on the top end of the second insulator 4, safety accidents are easy to happen, the air hole 44 is formed in the top end of the second insulator 4, when the switch is opened and closed, the gas in the cylindrical cavity 41 can be sprayed out through the air hole 44, the surface of the top end of the second insulator 4 is cleaned, and the coal slag is prevented from remaining on the surface of the top end of the second insulator 4; because part coal cinder can fall into the intermediate layer of arc-extinguishing chamber 7 to influence the arc extinguishing effect of arc-extinguishing chamber 7, consequently, be equipped with brush 71 between the intermediate layer of arc-extinguishing chamber 7, when gaseous blowout from cylindrical cavity 41 in, blow brush 71 and rotate, realized avoiding the arc-extinguishing chamber 7 to lose efficacy to the intraformational clean effect of arc-extinguishing chamber 7 intermediate layer, thereby produce electric arc near the switch, cause danger.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
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| CN201910691147.2A CN110333441B (en) | 2019-07-29 | 2019-07-29 | An optical fiber-based switch state detection device for high-voltage power grids in coal mines |
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| CN201910691147.2A CN110333441B (en) | 2019-07-29 | 2019-07-29 | An optical fiber-based switch state detection device for high-voltage power grids in coal mines |
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| CN110333441B true CN110333441B (en) | 2021-08-06 |
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| US9052363B2 (en) * | 2013-10-10 | 2015-06-09 | South States LLC | High voltage switch blade closing detector |
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| CN201071704Y (en) * | 2007-04-04 | 2008-06-11 | 薛华 | Shaft mouth visible flux valve |
| CN101865968A (en) * | 2010-05-26 | 2010-10-20 | 攀枝花电业局 | AC withstand voltage test bench for vacuum bubble fracture of circuit breaker |
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| CN110333441A (en) | 2019-10-15 |
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Denomination of invention: A fiber optic based switch state detection device for high voltage power grid in coal mines Granted publication date: 20210806 Pledgee: Suzhou financing Company limited by guarantee Pledgor: Anhui Jinding Safety Technology Co.,Ltd. Registration number: Y2025980022628 |