CN105870823B - For the instrument with bird's nest on electrical clean-up breaker or disconnecting switch pedestal - Google Patents

Abstract

The invention discloses a tool for removing bird's nests on the base of a circuit breaker or an isolating switch with electricity, comprising an insulating support base, an insulating fixing base, a driving motor, an electric fan, an insulating baffle and an insulating fixing guide rail. The fixing base includes a rear plate and a peripheral wall, and the opening of the fixing base can cover a semi-closed hole. The insulating fixed guide rail is fixed on the surrounding wall and is located in the fixing seat. The driving motor and the electric fan are all fixedly arranged on the front end of the back plate, and the control switches of the driving motor and the electric fan are all arranged on the lower part of the insulating support seat. The rear end surface of the insulating baffle is fixed with a transmission part, and the drive motor is connected to the transmission part to drive the insulation baffle to move back and forth. The transmission part is slidably connected to the insulating fixed guide rail. It has the following advantages: no need to wait for power outage maintenance, quickly remove the bird's nest in the circuit breaker or isolating switch base when the equipment is charged, the bird damage treatment efficiency is high, and the grid operation is guaranteed to be reliable.

Description

Tool for live removal of bird nests on the base of a circuit breaker or disconnect switch

technical field

The invention relates to a tool for live removal of bird's nests on the base of a circuit breaker or isolating switch.

Background technique

With the continuous expansion of industrial scale and the continuous improvement of residents' electricity quality requirements, large-scale cross-regional power transmission has become the general trend. In order to improve the construction of my country's modern power grid system, my country has built a large number of ultra-high voltage and ultra-high voltage substations. Most of these substations are located in remote areas due to geographical conditions, construction costs, and land acquisition issues. Especially in the south, most substations are built in wild forests, where there are many birds and a wide range of activities. Circuit breakers and isolating switches in substations are the most widely used equipment in power systems. The semi-enclosed bases on circuit breakers and isolating switches have become the first choice for many birds to nest.

However, according to the analysis of the on-site operation experience of substation equipment by the power department over the years, the proportion of power grid accidents due to bird damage is increasing year by year, and most of them nest in the semi-closed bases on circuit breakers and disconnectors. If effective preventive measures are not taken, problems such as feathers of birds attracted by bird nests, falling weeds, and waste metal wires may cause major line faults such as phase-to-phase short circuits and single-phase grounding, resulting in tripping of corresponding circuit breakers. Especially for ultra-high voltage and ultra-high voltage substations with a voltage level of 220kV and above, the tripping of one line can easily lead to unpredictable large-scale power outages. In the current situation where electricity companies and customers have continuously improved electricity quality requirements, the power sector must take all possible measures to prevent such accidents. Therefore, it is necessary to regularly inspect the relevant equipment of each substation to detect bird nests as soon as possible and timely clear.

Currently, the most common practice for removing bird nests in substations is to use this power outage as an opportunity to manually remove bird nests located on the bases of circuit breakers and disconnectors, in conjunction with interval routine maintenance. There are many disadvantages in this treatment method, for example: 1. Since the distance from the high-voltage live parts is less than the corresponding safety distance, the power outage maintenance treatment is necessary, which expands the power outage scope and seriously affects the economy of the power grid operation. 2. After the bird nest is found, it cannot be dealt with immediately. It must wait for routine maintenance at the interval or apply for maintenance. This will prolong the time for bird damage treatment, increase the possibility of power grid accidents, and affect the reliability of power grid operation. 3. Manual removal of bird nests requires the cooperation of aerial work vehicles or lifting platforms, which increases maintenance costs and reduces processing efficiency.

Contents of the invention

The invention provides a tool for removing the bird's nest on the base of the circuit breaker or isolating switch while it is live, which overcomes the shortcomings of the way of clearing the bird's nest on the base of the circuit breaker/isolating switch in the background technology.

The adopted technical scheme that the present invention solves its technical problem is:

A tool for removing a bird's nest on the base of a circuit breaker or a disconnector when it is live, comprising an insulating support base (10), an insulating fixing base (20), a driving motor (30), several electric fans (40), an insulating Baffle plate (50) and insulating fixed guide rail (60); This fixed seat (20) comprises a rear plate (21) and a peripheral wall (22), and this peripheral wall (22) rear peripheral edge and rear plate (21) peripheral edge are affixed and The fixing seat (20) is formed with an opening facing forward, and the opening of the fixing seat (20) can cover the semi-closed hole on the base of the circuit breaker\isolating switch, and the peripheral wall (22) is fixed on the insulating support seat (10) The upper end; the insulating fixed guide rail (60) is fixed on the peripheral wall (22) and is located in the fixed seat (20); the drive motor (30) and the electric fan (40) are all fixed on the front end of the rear plate (21) Above, the control switches of the driving motor (30) and the electric fan (40) are all arranged on the lower part of the insulating support base (10), and the control switch is electrically connected to the driving motor (30) and the electric fan (40) through wires. The seat (10) is provided with a circuit arrangement channel, and the wire is arranged along the circuit arrangement channel and extends into the fixed seat (20); the rear end surface of the insulating baffle (50) is fixed with an insulating transmission part (51), the insulating The baffle (50) is located in the fixed seat (20), and the drive motor (30) is connected to the transmission part (51) to drive the insulating baffle (50) to move forward and backward. on the guide rail (60).

In one embodiment: the control switch includes a first control switch (31) for controlling the drive motor (30) and a second control switch (41) for controlling the electric fan (40); the first control switch ( 31) and the second control switch (41) are located at the rear end face of the insulating support base (10).

In one embodiment: the number of the electric fans (40) is four, and the four electric fans (40) are respectively fixed at the four corners of the front end of the rear plate (21).

In one embodiment: a bevel gear mechanism and a rack and pinion mechanism are arranged between the drive motor (30) and the transmission member (51), the drive motor (30) has a power output shaft (32), and the power output shaft (32) Arranged horizontally along the left-right direction, the power output shaft (32) is fixed with a first bevel gear, and the second bevel gear is also rotatably connected in the fixed seat (20), the first bevel gear and the second bevel gear Mesh to form a bevel gear mechanism; the second bevel gear is coaxially fixed with a drive gear, the transmission member (51) is provided with a rack structure, and the drive gear and the rack structure are engaged to form a rack and pinion structure.

Among one embodiment: a bevel gear mechanism and a threaded mandrel nut mechanism are arranged between the drive motor (30) and the transmission member (51), the drive motor (30) has a power output shaft (32), and the power output shaft ( 32) Arranged horizontally along the left and right directions, the power output shaft (32) is fixed with a first bevel gear, and a second bevel gear is also rotatably connected in the fixed seat (20), and the first bevel gear meshes with the second bevel gear And constitute a bevel gear mechanism; the screw nut mechanism connects the transmission part and the second bevel gear.

In one embodiment: an insulating hand-held rod and a net bag are also provided, and a ring part is fixed on the top of the insulating hand-held rod. The opening of the net bag is connected with the ring part. A semi-closed hole in the seat.

Compared with the background technology, this technical solution has the following advantages:

When in use, align the opening of the fixed seat of the special tool with the rear port of the semi-closed hole of the base of the circuit breaker or isolating switch, and connect the peripheral wall cover to the rear port of the semi-closed hole; press the forward start switch to drive the drive motor to drive the insulating baffle toward Move forward, the bird nest in the hole can be pushed out during the movement, press the reverse start switch to drive the drive motor to drive the insulating baffle to move back to the original position; press the fan start switch to turn on the fans located at the four corners, and turn the hole Clean up the remaining debris of the bird's nest; press the fan stop switch, clean up the site, and complete the work of removing the bird's nest when it is live; with insulating materials, there is no need to wait for power-off maintenance, and it can be quickly removed in the circuit breaker or isolating switch when the equipment is electrified. The bird's nest in the base has high efficiency in dealing with bird damage and ensures reliable operation of the power grid. Combining the push plate to push the bird's nest and the fan to remove debris, the bird's nest can be cleared at one time, and it is convenient to use. The opening of the fixing seat can cover the semi-closed hole on the base of the circuit breaker\isolating switch. Through the cooperation of the insulating back plate and the surrounding wall, safety accidents can be avoided, and the fixing seat can also provide assembly for electric fans, drive motors, rails, etc. Space, compact structure, easy to carry. The insulating baffle provides guidance and support through the rails, with high stability in forward and backward movement and long service life of the product. The control switches are all arranged at the lower part of the insulating support seat, and the wires are arranged along the circuit arrangement channel and extended into the fixed seat, which is convenient to operate, high in safety performance and beautiful in appearance.

It is also equipped with an insulating hand-held pole and a net bag. A ring is fixed on the top of the insulating hand-held pole. The opening of the net pocket is connected with the ring. The bird's nest re-contaminates the circuit breaker or isolating switch, which is convenient and fast to use and avoids safety accidents.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Figure 1 is a schematic diagram of the structure of the special tool.

FIG. 2 is a schematic cross-sectional view of A-A in FIG. 1 .

detailed description

Please refer to Fig. 1 to Fig. 2, the tool that is used to remove the bird's nest on the circuit breaker or isolating switch base with electricity, comprises an insulating support base 10, an insulating fixing base 20, a driving motor 30, some electric fans 40, an insulating Baffle plate 50 and insulating fixed guide rail 60 . The above-mentioned insulating parts are all made of high-strength insulating materials.

The fixing base 20 includes a rear plate 21 and a peripheral wall 22, and the peripheral wall 22 is formed by fixedly enclosing four plates. The rear peripheral edge of the peripheral wall 22 is fixedly connected to the peripheral edge of the rear plate 21 and the fixing seat 20 is formed with an opening facing forward. The opening of the fixing seat 20 can cover the semi-closed hole on the base of the circuit breaker/isolating switch. The peripheral wall 22 is fixedly connected to the upper end of the insulating support base 10 .

The insulating and fixing guide rail 60 is fixed on the peripheral wall 22 and is located in the fixing seat 20 . The insulating and fixing guide rail 60 is fixed on the peripheral wall through an insulating rod and arranged along the front and rear directions.

The drive motor 30 and the electric fan 40 are fixed on the front end of the back plate 21, and the control switches of the drive motor 30 and the electric fan 40 are all arranged on the lower part of the insulating support base 10. The first control switch 31 of the motor 30 and the second control switch 41 used to control the electric fan 40, the first control switch 31 such as forward rotation, reverse rotation, stop, the second control switch 41 such as 1st gear, 2nd gear, 3rd gear , shutdown, etc.; the first control switch 31 and the second control switch 41 are arranged on the rear end surface of the insulating support base 10 . The control switch is electrically connected to the drive motor 30 and the electric fan 40 through wires. A circuit layout channel is arranged in the support base 10 . The wires are arranged along the circuit layout channel and extend into the fixing base 20 . In a specific structure, the number of the electric fans 40 can be four, and the four electric fans 40 are respectively fixed at the four corners of the front surface of the rear plate 21 .

The rear end surface of the insulating baffle 50 is fixed with an insulating transmission member 51, the insulating baffle 50 is located in the fixed seat 20, the drive motor 30 is connected to the transmission member 51 to drive the insulating baffle 50 to move forward and backward, and the transmission member 51 slides It is connected on the insulating fixed guide rail 60. For example: a bevel gear mechanism and a rack and pinion mechanism are arranged between the driving motor 30 and the transmission member 51, the driving motor 30 has a power output shaft 32, and the power output shaft 32 is horizontally arranged along the left and right directions, and the power is fixed with The first bevel gear is also rotatably connected to the second bevel gear in the fixed seat 20, and the first bevel gear and the second bevel gear mesh to form a bevel gear mechanism; the second bevel gear is coaxially connected with a driving gear, the The transmission member 51 is provided with a rack structure, and the driving gear meshes with the rack structure to form a rack and pinion structure. The whole layout is reasonable and the structure is compact.

It is also equipped with an insulated hand-held rod and a net bag. A ring is fixed on the top of the insulated hand-held rod. The opening of the net is connected with the ring. hole.

When in use, the opening of the fixed seat 20 of the special tool is aligned with the rear port of the semi-closed hole of the circuit breaker or the isolating switch base, and the peripheral wall cover is connected to the rear port of the semi-closed hole; press the forward start switch to drive the drive motor 30 to drive the insulating block Plate 50 moves forward, and the bird's nest in the hole can be released during the moving process, and the staff standing on the opposite side adopts a net bag to cover the front port of the semi-closed hole to collect the bird's nest pushed out by the insulating baffle plate 50; Make the drive motor 30 drive the insulating baffle 50 to move back to the original position toward the start switch; press the fan start switch to open the fans positioned at the four corners, and remove the residual bird's nest debris in the hole; press the fan stop switch, Clean up the site and complete the live removal of bird nests.

The tool in this embodiment can produce the following technical effects: 1. Reduce maintenance cost. Take State Grid Longyan Power Supply Company’s 220 kV Lianguan Substation 110 kV Lianxi I Road 171 circuit breaker base bird nest removal as an example. Originally, the operation and maintenance required a total of about 3 hours of power outage. After using special tools, there is no need for power outage maintenance , It is enough to clear the bird's nest with electricity, and the operation efficiency is greatly improved; at the same time, it does not need the cooperation of high-speed work vehicles or lifting platforms, the power outage time is less, and the maintenance cost is reduced. 2. Strong applicability. This tool is suitable for live removal of bird nests on outdoor circuit breakers and isolating switches of all substations. 3. Improve the reliability of power grid operation. After adopting special tools, there is no need to wait for the equipment to be powered off. Once bird damage is found during operation, it can be dealt with at any time, which reduces the time for bird nests to cause damage in substations and greatly improves the reliability of power grid operation. 4. Economic benefits. Taking the 220kV Caoxi Substation of State Grid Longyan Power Supply Company as an example, the bird’s nest at the base of the 137 circuit breaker on the Caohuang Line 137 of the State Grid Longyan Power Supply Company is an example. The load current passing through the 137 interval of the Caohuang Line is 221.9A, and the original blackout time is about 3 hours. After using the special tool, there is no need to cut off the power, and the reduced power loss is √3×221.9×110×3=126829kwh. Calculated according to the average electricity price of 0.5 yuan/kwh, using the special tool to post-process a bird’s nest will reduce the loss by about 63,000 yuan. State Grid Longyan Power Supply Company has a total of 72 substations of 110 kV and above. In 2015, the substation maintenance room processed 36 bird nests throughout the year. After using special tools, State Grid Longyan Power Supply Company can reduce the loss of electricity costs by a total of 6.3×36=226.8 ten thousand yuan.

The above is only a preferred embodiment of the present invention, so the scope of implementation of the present invention cannot be limited accordingly, that is, equivalent changes and modifications made according to the patent scope of the present invention and the content of the specification should still be covered by the present invention within range.

Claims (6)

1. The tool for removing the bird's nest on the base of a circuit breaker or isolating switch while live is characterized in that it includes an insulating support base (10), an insulating fixing base (20), a driving motor (30), and several electric fans (40), an insulating baffle plate (50) and an insulating fixed guide rail (60); this fixed base (20) includes a back plate (21) and a peripheral wall (22), and the peripheral edge and the rear plate (22) of the peripheral wall ( 21) The peripheral edge is fixed and the fixed seat (20) is formed with an opening facing forward. The opening of the fixed seat (20) can cover the semi-closed hole on the base of the circuit breaker or disconnector switch. The peripheral wall (22) is fixed on the The upper end of the insulating support seat (10); the insulating fixed guide rail (60) is fixed on the peripheral wall (22) and is located in the fixed seat (20); the drive motor (30) and the electric fan (40) are all fixed on the rear plate (21) On the front end face, the control switches of the drive motor (30) and the electric fan (40) are all arranged on the lower part of the insulating support base (10), and the control switches are electrically connected to the drive motor (30), the electric fan (40), the support seat (10) is provided with a circuit layout channel, the wire is arranged along the circuit layout channel and extends into the fixed seat (20); the rear end surface of the insulating baffle (50) is fixed with an insulating transmission member (51), the insulating baffle (50) is located in the fixed seat (20), the driving motor (30) is connected to the transmission part (51) to drive the insulating baffle (50) to move forward and backward, and the transmission part (51) slides It is connected on the insulating fixed rail (60). 2. The tool for live removal of bird's nests on circuit breakers or isolating switch bases according to claim 1, characterized in that: the control switch includes a first control switch (31) for controlling the drive motor (30) And a second control switch (41) for controlling the electric fan (40); the first control switch (31) and the second control switch (41) are arranged on the rear end surface of the insulating support base (10). 3. The tool for live removal of bird's nests on circuit breakers or isolating switch bases according to claim 1, characterized in that: the number of electric fans (40) is four, and the four electric fans (40) They are respectively fixed at the four corners of the front end of the back plate (21). 4. The tool for live removal of bird's nests on circuit breakers or isolating switch bases according to claim 1, characterized in that: a bevel gear mechanism and A rack and pinion mechanism, the drive motor (30) has a power output shaft (32), the power output shaft (32) is horizontally arranged along the left and right directions, the power output shaft (32) is fixed with a first bevel gear, the fixed A second bevel gear is also rotatably connected in the seat (20), and the first bevel gear meshes with the second bevel gear to form a bevel gear mechanism; the second bevel gear is coaxially connected with a driving gear, and the transmission member (51) A rack structure is arranged on the top, and the driving gear meshes with the rack structure to form a rack and pinion structure. 5. The tool for live removal of bird's nests on circuit breakers or isolating switch bases according to claim 1, characterized in that: a bevel gear mechanism and Screw nut mechanism, the driving motor (30) has a power output shaft (32), the power output shaft (32) is arranged horizontally along the left and right directions, the power output shaft (32) is fixed with a first bevel gear, and the fixing seat (20) is also rotatably connected with a second bevel gear inside, and the first bevel gear and the second bevel gear mesh to form a bevel gear mechanism; the screw nut mechanism connects the transmission member and the second bevel gear. 6. According to claim 1 or 2 or 3 or 4 or 5, the tool for clearing the bird's nest on the circuit breaker or isolating switch base is characterized in that: it is also equipped with an insulating hand-held rod and a net bag, the A ring piece is fixed on the top of the insulating hand-held rod, and the opening of the net pocket is connected with the ring piece, and the opening of the net pocket can cover the semi-closed hole on the base of the circuit breaker or the isolating switch.