阅读说明：本技术 一种变电站远程信号复归装置及方法 (Transformer substation remote signal resetting device and method ) 是由 吴志坤 渠卫东 刘成磊 师珂 王菲 王晓辉 王志贺 肖伟 孙西保 仇蕴璋 薛道路 于 2020-12-16 设计创作，主要内容包括：本发明公开了一种变电站远程信号复归装置及方法,包括箱体、复归接收机和电磁继电器,所述电磁继电器的外壁通过设置有电源线与复归接收机的外壁电性连接,所述电磁继电器的外壁通过设置的电源线电性连接有指示灯,所述电磁继电器的输入端通过设置的电源线电性连接有第一接头,所述电磁继电器的输出端通过设置的电源线电性连接有第二接头,通过设置的指示灯用来检测电磁继电器是否需要复位,工作人员通过机器人和视频监控系统在调控中心对复归装置的指示灯进行观察,当指示灯熄灭,由于复归接收机通过电缆连接调控中心,所以工作人员可以远程控制复归接收机对电磁继电器进行复位,从而让装置正常工作,以达到能够远程控制,并自动复位的效果。(The invention discloses a remote signal resetting device and a method for a transformer substation, which comprises a box body, a resetting receiver and an electromagnetic relay, wherein the outer wall of the electromagnetic relay is electrically connected with the outer wall of the resetting receiver through a power line, the outer wall of the electromagnetic relay is electrically connected with an indicator lamp through the set power line, the input end of the electromagnetic relay is electrically connected with a first connector through the set power line, the output end of the electromagnetic relay is electrically connected with a second connector through the set power line, the indicator lamp is used for detecting whether the electromagnetic relay needs to be reset, a worker observes the indicator lamp of the resetting device at a regulation center through a robot and a video monitoring system, and when the indicator lamp is turned off, the resetting receiver is connected with the regulation center through a cable, so the worker can remotely control the resetting receiver to reset the electromagnetic relay, therefore, the device can work normally, and the effects of remote control and automatic reset can be achieved.)

1. The utility model provides a remote signal resetting device of transformer substation, includes box (5), resetting receiver (13) and electromagnetic relay (15), its characterized in that: the inner wall of the box body (5) is fixedly connected with a first supporting plate (22) and a second supporting plate (23), the first supporting plate (22) is positioned above the second supporting plate (23), the top of the first supporting plate (22) is fixedly connected with the bottom of the resetting receiver (13), the top of the second supporting plate (23) is fixedly connected with the bottom of the electromagnetic relay (15), the outer wall of the electromagnetic relay (15) is electrically connected with the outer wall of the resetting receiver (13) through a power line, the outer wall of the electromagnetic relay (15) is electrically connected with a battery (14) through the set power line, the bottom of the battery (14) is fixedly connected with the top of the second supporting plate (23), the outer wall of the electromagnetic relay (15) is electrically connected with an indicating lamp (1) through the set power line, the bottom of the indicating lamp (1) is fixedly connected with the top of the box body (5), the input of electromagnetic relay (15) has first joint (16) through the power cord electric connection who sets up, the output of electromagnetic relay (15) has second joint (17) through the power cord electric connection who sets up, the inner wall fixed connection of first joint (16) and second joint (17) and box (5), hole (18) have been seted up to the bottom of box (5).

2. The substation remote signal resetting device of claim 1, wherein: the outer wall swing joint of box (5) has two first sliders (12), T type spout (10) with first slider (12) looks adaptation are seted up to the outer wall of box (5), every the outer wall of first slider (12) is through being provided with two pulleys (24) of pivot fixedly connected with, every pulley (24) are located the inner wall of T type spout (10), every the outer wall fixedly connected with mount (3) of first slider (12).

3. The substation remote signal resetting device of claim 1, wherein: a plurality of heat dissipation holes (9) are formed in the outer wall of the box body (5), and a baffle (6) is fixedly connected to the top of each heat dissipation hole (9).

4. The substation remote signal resetting device of claim 1, wherein: a plurality of sliding grooves (19) are formed in the inner wall of the box body (5), a second sliding block (21) is arranged on the inner wall of each sliding groove (19), and the other end of each second sliding block (21) is fixedly connected with a filter screen cover (20).

5. The substation remote signal resetting device of claim 1, wherein: the door is characterized in that the front face of the box body (5) is provided with a hinge fixedly connected with door plate (2), the outer wall of the door plate (2) is movably connected with a door handle (4), the outer wall of the door plate (2) is provided with a groove (27), the inner wall of the groove (27) is fixedly connected with a spring (26), the other end of the spring (26) is fixedly connected with a fixture block (28), the outer wall of the fixture block (28) is fixedly connected with the outer wall of the door handle (4), and the inner wall of the box body (5) is provided with a clamping groove (29) matched with the fixture block (28).

6. The substation remote signal resetting device of claim 2, wherein: the inner wall of first slider (12) has bolt (11) through being provided with thread groove threaded connection, the outer wall of first slider (12) has brake pads (25) through having seted up shrinkage pool swing joint, the outer wall of brake pads (25) and the outer wall fixed connection of bolt (11).

7. The substation remote signal resetting device of claim 1, wherein: the cable (7) is fixedly connected to the outer wall of the resetting receiver (13), a sealing sleeve (8) is arranged on the outer wall of the cable (7), and the bottom of the sealing sleeve (8) is fixedly connected with the top of the box body (5).

8. A substation remote signal resetting device using the substation of claim 2-claim 7, characterized in that: the method comprises the following steps:

s1, a first sliding block (12) is driven to slide on the inner wall of a T-shaped sliding groove (10) through a pulley (24), the first sliding block (12) drives a fixing frame (3) to slide, when the device is required to be fixed to a wall surface, the fixing frame (3) is slid to the back of a box body (5), when the device is required to be installed on the ground, the fixing frame (3) is slid to the bottom of the box body (5), when the device is moved to a specified position, a bolt (11) is rotated, the bolt (11) drives a brake block (25) to extrude the inner wall of the T-shaped sliding groove (10), the pulley (24) cannot slide on the inner wall of the T-shaped sliding groove (10), the effect of fixing the fixing frame (3) is achieved, the bolt (11) is rotated in the opposite direction, the brake block (25) can be retracted into a concave hole, the movement of the pulley (24) cannot be influenced, and after the fixing frame (3) and the box body (5), and then the fixed frame (3) is arranged at a designated position through screws.

9, S2. after the box body (5) is installed, the first joint (16) passes through the input end that connects hole (18) and connect the transformer substation through the power cord, the second joint (17) passes through the output that connects hole (18) and connect the transformer substation through the power cord, battery (14) play the power supply effect to electromagnetic relay (15), the bright going out of pilot lamp (1) is used for detecting whether electromagnetic relay (15) need reset, the staff observes pilot lamp (1) of resetting the device at the regulation and control center through robot and video monitoring system, extinguish when pilot lamp (1), because resetting receiver (13) passes through cable (7) and connects the regulation and control center, so the staff can reset receiver (13) by remote control and reset electromagnetic relay (15), thereby let the device normally work.

S3, the worker peels the card (28) off the inner wall of the clamping groove (29) through the sliding door handle (4), so that the door plate (2) is not fixed by the clamping groove (29), the door plate (2) is opened, then the filter screen cover (20) is pulled to move out of the inner wall of the sliding groove (19), and then the filter screen cover is cleaned.

Technical Field

The invention belongs to the technical field of power equipment, and particularly relates to a remote signal resetting device and method for a transformer substation.

Background

In order to reset the abnormal signal of the protection device at the first time, operation and maintenance personnel are required to drive to go to the site for manual reset at the first time, and the safe and stable operation of the secondary equipment is ensured. However, most of the transformer substations of 500kV and below in our province are in an unattended operation and maintenance class management mode, and operation and maintenance personnel can manually reset after going to the site, because of different voltage grades, the number of stations administered by each operation and maintenance class is also different, and under the influence of factors such as road conditions and weather, the time from the station to the operation and maintenance station is unequal for the operation and maintenance personnel, less for 40 minutes, and more for 2 hours. In the period that the device cannot be reset after being started, the correct outlet actions of a plurality of secondary signals have great hidden dangers, the abnormal signals of the protection device cannot be reset at the first time, and the device is a great unstable factor in operation and maintenance production work.

The device for automatically resetting the protection signal of the transformer substation disclosed in the Chinese patent CN208521802U is provided with an opening device, an electric telescopic rod drives a side plate to move, the side plate pushes a sliding rod to push a pressing cylinder to move, the pressing cylinder drives a moving rod to move in a shell in parallel, the moving rod pushes a pressing block to press on an automatic resetting button, then a spring pushes a clamping plate to drive the moving rod to return to the original position, and further the pressing block is loosened from the automatic resetting button, so that the efficiency of automatic opening is improved, the detachable structure is favorable for improving the portability of use, the usability is improved, and the structural change of the automatic resetting button is reduced, but the device cannot remotely monitor whether the signal of the device is mistakenly sent or actually fails due to the single design structure, so that the problem of frequent automatic resetting is inconvenient, and secondly, the device is installed under different environments, so that the problem of inconvenient installation is, in addition, the device is inconvenient to radiate heat, so that the temperature of the device is too high, and the service life of the device is short.

Disclosure of Invention

The invention aims to provide a substation remote signal resetting device and a method, and aims to solve the problems that the conventional substation protection signal automatic resetting device cannot remotely monitor whether a signal is mistakenly sent or actually fails due to a single design structure in the use process, the device is inconvenient to install in different environments, and the device is inconvenient to radiate heat, so that frequent automatic resetting and inconvenient to install are caused, the temperature of the device is too high, and the service life of the device is short.

In order to achieve the purpose, the invention provides the following technical scheme: a remote signal resetting device of a transformer substation comprises a box body, a resetting receiver and an electromagnetic relay, wherein a first supporting plate and a second supporting plate are fixedly connected to the inner wall of the box body, the first supporting plate is positioned above the second supporting plate, the top of the first supporting plate is fixedly connected with the bottom of the resetting receiver, the top of the second supporting plate is fixedly connected with the bottom of the electromagnetic relay, the outer wall of the electromagnetic relay is electrically connected with the outer wall of the resetting receiver through a power line, the outer wall of the electromagnetic relay is electrically connected with a battery through the set power line, the bottom of the battery is fixedly connected with the top of the second supporting plate, the outer wall of the electromagnetic relay is electrically connected with an indicator lamp through the set power line, the bottom of the indicator lamp is fixedly connected with the top of the box body, and the input end of the electromagnetic relay is electrically connected with a first connector through the set power line, the output end of the electromagnetic relay is electrically connected with a second connector through a set power line, the first connector and the second connector are fixedly connected with the inner wall of the box body, and the bottom of the box body is provided with a connecting hole.

Preferably, the outer wall swing joint of box has two first sliders, the T type spout with first slider looks adaptation is seted up to the outer wall of box, every the outer wall of first slider is through being provided with two pulleys of pivot fixedly connected with, every the pulley is located the inner wall of T type spout, every the outer wall fixedly connected with mount of first slider.

Preferably, the outer wall of the box body is provided with a plurality of heat dissipation holes, and the top of each heat dissipation hole is fixedly connected with a baffle.

Preferably, a plurality of sliding grooves are formed in the inner wall of the box body, a second sliding block is arranged on the inner wall of each sliding groove, and a filter screen cover is fixedly connected to the other end of each second sliding block.

Preferably, the front of box is through being provided with hinge fixedly connected with door plant, the outer wall swing joint of door plant has the door handle, the outer wall of door plant is seted up flutedly, the inner wall fixedly connected with spring of recess, the other end fixedly connected with fixture block of spring, the outer wall of fixture block and the outer wall fixed connection of door handle, the draw-in groove with fixture block looks adaptation is seted up to the inner wall of box.

Preferably, the inner wall of first slider has the bolt through being provided with thread groove threaded connection, the outer wall of first slider has the brake pads through having seted up shrinkage pool swing joint, the outer wall fixed connection of the outer wall of brake pads and bolt.

Preferably, the outer wall of the resetting receiver is fixedly connected with a cable, a sealing sleeve is arranged on the outer wall of the cable, and the bottom of the sealing sleeve is fixedly connected with the top of the box body.

A remote signal resetting device and method for a transformer substation comprise the following steps:

s1 drive the slip of first slider at T type spout inner wall through the pulley, first slider drives the slip of mount again, when needing to fix the device to the wall, slide the back of mount to the box, when needing to install on ground, slide the bottom of mount to the box, when removing the assigned position, the rotation bolt, let the bolt drive the brake pads and extrude T type spout inner wall, thereby let the pulley can' T slide at T type spout inner wall, thereby reach the effect fixed to the mount, the opposite direction rotates the bolt, the brake pads can be withdrawed in the notch, thereby can not cause the influence to the removal of pulley, after letting mount and box fixed firmly through the bolt, the rethread screw is installed the mount at the assigned position.

S2, after the box body is installed, the first connector penetrates through the connecting hole to be connected with the input end of the transformer substation through the power line, the second connector penetrates through the connecting hole to be connected with the output end of the transformer substation through the power line, the battery plays a role in supplying power to the electromagnetic relay, the on-off of the indicating lamp is used for detecting whether the electromagnetic relay needs to be reset or not, a worker observes the indicating lamp of the resetting device at a regulation and control center through the robot and the video monitoring system, when the indicating lamp is turned off, the resetting receiver can be remotely controlled to reset the electromagnetic relay due to the fact that the resetting receiver is connected with the regulation and control center through a cable, and therefore the device can normally.

S3, the worker peels the card off the inner wall of the clamping groove through the sliding door handle, so that the fixing of the clamping groove to the door plate is cancelled, the door plate is opened, then the filter screen cover is pulled to move out of the inner wall of the sliding groove, and then the filter screen cover is cleaned.

Compared with the prior art, the invention has the beneficial effects that:

1. the electromagnetic relay is an electronic control device, has a control system and a controlled system, is usually applied to an automatic control circuit, and actually uses a smaller current and a lower voltage to control an automatic switch of a larger current and a higher voltage, a first joint passes through a connecting hole through a power line to be connected with the input end of a transformer substation, a second joint passes through a connecting hole through a power line to be connected with the output end of the transformer substation, a battery plays a role in supplying power to the electromagnetic relay, an indicator lamp is switched on and off to detect whether the electromagnetic relay needs to be reset, a worker observes the indicator lamp of a resetting device at a regulation center through a robot and a video monitoring system, when the indicator lamp is switched off, the resetting receiver can be remotely controlled to reset the electromagnetic relay by the worker because the resetting receiver is connected with the regulation center through a cable, therefore, the device can work normally, and the effects of remote control and automatic reset can be achieved.

2. The pulley drives the first sliding block to slide on the inner wall of the T-shaped sliding groove, the first sliding block drives the fixing frame to slide, the T-shaped sliding groove is designed to limit the pulley and prevent the pulley from separating from the inner wall of the T-shaped sliding groove, when the device is required to be fixed to a wall surface, the fixing frame is slid to the back of the box body, when the device is required to be installed on the ground, the fixing frame is slid to the bottom of the box body, when the device is moved to a specified position, the bolt is rotated to drive the brake block to extrude the inner wall of the T-shaped sliding groove, so that the pulley cannot slide on the inner wall of the T-shaped sliding groove, the effect of fixing the fixing frame is achieved, the bolt is rotated in the opposite direction, the brake block can be retracted into the concave hole, the movement of the pulley cannot be influenced, the brake block is made of rubber, the rubber has the characteristics of skid resistance and abrasion, and then the fixing frame is arranged at a designated position through screws so as to achieve the effect of convenient installation.

3. The flow of wind is convenient for through a plurality of louvres that set up, thereby cool down to the device of box inner wall, the setting of baffle cooperates louvre inclination's setting, prevent that water from flowing into the inner wall of box, the setting of screen panel plays dirt-proof effect, prevent piling up of dust and cause the trouble to the box inner wall device, the setting of sliding tray and second slider, be for convenient for the staff to install and dismantle the screen panel, so that to the clearance of screen panel, waterproof dustproof effect again when reaching the radiating.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic front perspective view of the present invention;

FIG. 3 is a schematic rear perspective view of the present invention;

FIG. 4 is a schematic cross-sectional front view of the present invention;

FIG. 5 is a side cross-sectional structural schematic view of the present invention;

FIG. 6 is a schematic cross-sectional view of a door panel according to the present invention;

fig. 7 is a circuit block diagram of the reset device of the present invention.

In the figure: 1. an indicator light; 2. a door panel; 3. a fixed mount; 4. a door handle; 5. a box body; 6. a baffle plate; 7. a cable; 8. sealing sleeves; 9. heat dissipation holes; 10. a T-shaped chute; 11. a bolt; 12. a first slider; 13. resetting the receiver; 14. a battery; 15. an electromagnetic relay; 16. a first joint; 17. a second joint; 18. connecting holes; 19. a sliding groove; 20. a filter screen cover; 21. a second slider; 22. a first support plate; 23. a second support plate; 24. a pulley; 25. a brake pad; 26. a spring; 27. a groove; 28. a clamping block; 29. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-7, the present invention provides a technical solution: a remote signal resetting device of a transformer substation comprises a box body 5, a resetting receiver 13 and an electromagnetic relay 15, wherein the inner wall of the box body 5 is fixedly connected with a first supporting plate 22 and a second supporting plate 23, the first supporting plate 22 is positioned above the second supporting plate 23, the top of the first supporting plate 22 is fixedly connected with the bottom of the resetting receiver 13, the top of the second supporting plate 23 is fixedly connected with the bottom of the electromagnetic relay 15, the outer wall of the electromagnetic relay 15 is electrically connected with the outer wall of the resetting receiver 13 through a power line, the outer wall of the electromagnetic relay 15 is electrically connected with a battery 14 through the set power line, the bottom of the battery 14 is fixedly connected with the top of the second supporting plate 23, the outer wall of the electromagnetic relay 15 is electrically connected with an indicator lamp 1 through the set power line, the bottom of the indicator lamp 1 is fixedly connected with the top of the box body 5, the input end of the electromagnetic relay 15 is electrically connected with, the output end of the electromagnetic relay 15 is electrically connected with a second joint 17 through a set power line, the first joint 16 and the second joint 17 are fixedly connected with the inner wall of the box body 5, and the bottom of the box body 5 is provided with a connecting hole 18.

In this embodiment, the electromagnetic relay 15 is an electronic control device, which has a control system and a controlled system, and is usually applied in an automatic control circuit, and it is actually an automatic switch that uses a smaller current and a lower voltage to control a larger current and a higher voltage, the first connector 16 is connected to the input end of the transformer substation through the power line passing through the connection hole 18, the second connector 17 is connected to the output end of the transformer substation through the power line passing through the connection hole 18, the battery 14 supplies power to the electromagnetic relay 15, the turning-off of the indicator lamp 1 is used to detect whether the electromagnetic relay 15 needs to be reset, the operator observes the indicator lamp 1 of the resetting device at the control center through the robot and the video monitoring system, when the indicator lamp 1 is turned off, since the resetting receiver 13 is connected to the control center through the cable 7, the operator can remotely control the resetting receiver 13 to reset the electromagnetic relay 15, thereby allowing the device to operate normally.

Example two:

as shown in fig. 1 to 7, on the basis of the first embodiment, the present invention provides a technical solution: two first sliders 12 of outer wall swing joint of box 5, T type spout 10 with 12 looks adaptations of first slider is seted up to the outer wall of box 5, every first slider 12's outer wall is through being provided with two pulleys 24 of pivot fixedly connected with, every pulley 24 is located the inner wall of T type spout 10, every first slider 12's outer wall fixedly connected with mount 3, first slider 12's inner wall has bolt 11 through being provided with thread groove threaded connection, first slider 12's outer wall has brake block 25 through seting up shrinkage pool swing joint, brake block 25's outer wall and bolt 11's outer wall fixed connection.

In this embodiment, the pulley 24 is arranged to drive the first slider 12 to slide on the inner wall of the T-shaped chute 10, the first slider 12 then drives the fixing frame 3 to slide, the design of the T-shaped chute 10 is to limit the pulley 24 and prevent the pulley 24 from separating from the inner wall of the T-shaped chute 10, when the device needs to be fixed on a wall surface, the fixing frame 3 is slid to the back of the box 5, when the device needs to be installed on the ground, the fixing frame 3 is slid to the bottom of the box 5, when the device moves to a specific position, the bolt 11 is rotated to drive the brake block 25 to extrude the inner wall of the T-shaped chute 10 by the bolt 11, so that the pulley 24 cannot slide on the inner wall of the T-shaped chute 10, thereby achieving the effect of fixing the fixing frame 3, the bolt 11 is rotated in the opposite direction, the brake block 25 is retracted into the concave hole, thereby not affecting the movement of the pulley 24, the brake block, let the effect of braking better, let mount 3 and box 5 fixed firm back through bolt 11, the rethread screw is installed mount 3 in the assigned position to realize the effect of installation under the multiple environment.

Example three:

as shown in fig. 1 to 7, on the basis of the first embodiment and the second embodiment, the present invention provides a technical solution: a plurality of louvres 9 have been seted up to the outer wall of box 5, and a plurality of sliding trays 19 have been seted up to the top fixedly connected with baffle 6 of every louvre 9, box 5's inner wall, and the inner wall of every sliding tray 19 is provided with second slider 21, and the other end fixedly connected with screen panel 20 of every second slider 21.

In this embodiment, be convenient for the flow of wind through a plurality of louvres 9 that set up, thereby cool down the device of box 5 inner wall, baffle 6 sets up the setting of cooperation louvre 9 inclination, prevent that water from flowing into the inner wall of box 5, screen panel 20's setting plays dirt-proof effect, prevent piling up of dust and cause the trouble to box 5 inner wall device, the setting of sliding tray 19 and second slider 21 is for installing and dismantling screen panel 20 for the convenience of the staff, so that to screen panel 20's clearance.

Example four:

as shown in fig. 1 to 7, on the basis of the first embodiment, the second embodiment and the third embodiment, the present invention provides a technical solution: the front of box 5 is through being provided with hinge fixedly connected with door plant 2, the outer wall swing joint of door plant 2 has door handle 4, recess 27 has been seted up to the outer wall of door plant 2, the inner wall fixedly connected with spring 26 of recess 27, spring 26's other end fixedly connected with fixture block 28, the outer wall of fixture block 28 and the outer wall fixed connection of door handle 4, draw-in groove 29 with fixture block 28 looks adaptation is seted up to the inner wall of box 5, the outer wall fixedly connected with cable 7 of the receiver 13 of resetting, the outer wall of cable 7 is provided with seal cover 8, the bottom of seal cover 8 and the top fixed connection of box 5.

In this embodiment, door plant 2 through the setting plays the guard action to 5 interior wall devices of box, fixture block 28 and draw-in groove 29's cooperation is used, the convenience is fixed to door plant 2, spring 26's setting, utilize the characteristic of spring 26 self, the atress takes place deformation, lose the effort after the reconversion, thereby let the staff realize stripping off the inner wall of draw-in groove 29 with fixture block 28 through sliding door handle 4, thereby cancel draw-in groove 29 to door plant 2's fixed, cable 7 plays the effect of connecting reset receiver 13 and regulation and control center, make things convenient for staff remote control, seal cover 8's effect prevents that the junction of box 5 and cable 7 from intaking, lead to interior wall device damage.

A remote signal resetting device and method for a transformer substation comprise the following steps:

s1, drive the slip of first slider 12 at T type spout 10 inner wall through pulley 24, first slider 12 drives the slip of mount 3 again, when needing to fix the device to the wall, with the back of mount 3 slip box 5, when needing to install on ground, slide the bottom of mount 3 to box 5, when removing the assigned position, rotate bolt 11, let bolt 11 drive brake pads 25 extrude T type spout 10 inner wall, thereby let pulley 24 can' T slide at T type spout 10 inner wall, thereby reach the effect fixed to mount 3, reverse direction rotation bolt 11, brake pads 25 can be withdrawed in the concave hole, thereby can not cause the influence to the removal of pulley 24, after letting mount 3 and box 5 fix firmly through bolt 11, rethread screw installs mount 3 at the assigned position.

S2, after the box body 5 is installed, the first connector 16 penetrates through the connecting hole 18 through a power line to be connected with the input end of the transformer substation, the second connector 17 penetrates through the connecting hole 18 through the power line to be connected with the output end of the transformer substation, the battery 14 plays a role in supplying power to the electromagnetic relay 15, the on-off of the indicating lamp 1 is used for detecting whether the electromagnetic relay 15 needs to be reset or not, a worker observes the indicating lamp 1 of the resetting device at a regulation and control center through a robot and a video monitoring system, when the indicating lamp 1 is turned off, the resetting receiver 13 is connected with the regulation and control center through a cable 7, and therefore the worker can remotely control the resetting receiver 13 to reset the electromagnetic relay 15, and the device can work normally.

S3, the worker peels off the card 28 from the inner wall of the clamping groove 29 by pushing and pulling the door handle 4, so that the door plate 2 is not fixed by the clamping groove 29, the door plate 2 is opened, then the filter screen cover 20 is pulled to move out of the inner wall of the sliding groove 19, and then the filter screen cover is cleaned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.