A monitoring device for a lightning protection fuse combination

Abstract

The application relates to a monitoring device of a lightning arrester and fuse combination device, which comprises a monitoring box, a monitoring box clamp, a magnet box, a magnet box clamp and terminal equipment, the monitoring box is fixed on an insulating base through the monitoring box clamp, and the magnet box is fixed on a fuse tube through the magnet box clamp; the monitoring box comprises a horizontal dry reed and a vertical dry reed, and the horizontal dry reed is perpendicular to the vertical dry reed; the radial direction of the horizontal dry reed is parallel to the magnetic field of the built-in magnet of the magnet box, the horizontal dry reed is used for inducting the magnet box to obtain a magnet box inductive signal; the radial direction of the vertical dry reed is parallel to the magnetic field of the built-in magnet of a lightning arrester magnetic disconnector, and the vertical dry reed is used for inducting the lightning arrester magnetic disconnector to obtain a disconnector inductive signal; the terminal equipment is used for acquiring the magnet box inductive signal and the disconnector inductive signal, and determining the lightning arrester tripping state and the fuse opening and closing state according to the magnet box inductive signal and the disconnector inductive signal; and the application can observe the action state of the lightning arrester and the fuse at any time.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment monitoring technology, and specifically to a monitoring device for a lightning protection fuse combination device. Background Technology

[0002] The surge arrester and fuse combination device is a new type of distribution network electrical equipment. Its characteristic is that it combines the surge arrester and fuse into one, sharing a common insulating base, which makes it special to test its operation.

[0003] Surge arresters can reduce the amplitude of intrusive surge waves, lowering the overvoltage value experienced by the protected equipment, thereby protecting communication lines and equipment. Surge arresters can protect against high voltages generated by lightning and also against operational high voltages. However, surge arresters are consumable components and will age and fail. Upon failure, a trip unit will activate, disconnecting the surge arrester from the line, requiring timely replacement with a new one. When a short-circuit current blows the fuse wire, the upper and lower moving contacts of the fuse tube lose the tension of the fuse wire. Under the weight of the fuse tube itself and the action of the upper and lower stationary contact springs, the fuse tube quickly falls, breaking the circuit and disconnecting the faulty section of the line or the faulty equipment. In this case, the fuse needs timely maintenance and replacement of parts.

[0004] Currently, the detection of whether the surge arrester core of the surge arrester combination device has tripped and the opening and closing of the fuse is mainly carried out by manual inspection. Traditional manual inspection is labor-intensive, inefficient, and prone to omissions. The dangers of omissions during inspection are as follows: If the surge arrester has tripped and the inspection is missed, the transformer may be directly damaged by the operation of the line system after it is closed; if the fuse opening and closing inspection is missed, it will lead to a phase loss on the line, which will affect the power supply of all users on the line. At best, it will affect normal power supply, and at worst, it will cause damage to electrical equipment or even endanger life safety. Summary of the Invention

[0005] The purpose of this invention is to provide a monitoring device for a lightning arrester-fuse combination device, which can detect whether the lightning arrester has tripped and the opening and closing of the fuse, and can observe the operation status of the lightning arrester and the fuse at any time on the terminal equipment.

[0006] To achieve the above objectives, this invention proposes a monitoring device for a lightning protection fuse combination device. The lightning protection fuse combination device includes a surge arrester and a fuse. The surge arrester includes a surge core magnetic disconnector and an insulating base. The fuse includes a fuse tube. The monitoring device includes a monitoring box, a monitoring box clamp, a magnetic box, a magnetic box clamp, and terminal equipment. The monitoring box is fixed to the insulating base by the monitoring box clamp, and the magnetic box is fixed to the fuse tube by the magnetic box clamp. The monitoring box includes a horizontal reed switch and a vertical reed switch. The horizontal reed switch and the vertical reed switch... The reed switch is vertical; the radial direction of the horizontal reed switch is parallel to the magnetic field of the built-in magnet of the magnet box, and the horizontal reed switch is used to sense the magnet box to obtain the magnet box sensing signal; the radial direction of the vertical reed switch is parallel to the magnetic field of the built-in magnet of the surge arrester magnetic disconnector, and the vertical reed switch is used to sense the surge arrester magnetic disconnector to obtain the disconnector sensing signal; the terminal device is used to acquire the magnet box sensing signal and the disconnector sensing signal, and determine the surge arrester tripping state and the fuse opening and closing state based on the magnet box sensing signal and the disconnector sensing signal.

[0007] Preferably, the monitoring box further includes a monitoring circuit board, which is used to receive the magnet box sensing signal and the disconnector sensing signal, and send the magnet box sensing signal and the disconnector sensing signal to the terminal device.

[0008] Preferably, the monitoring box clamp includes a right clamp and a left clamp, and the right clamp and the left clamp are provided with a tenon and mortise fastening structure. The monitoring box is rotatably connected to the right clamp and the left clamp by knurled pins. The monitoring box is fixed to the insulating base by the tenon and mortise fastening structure of the right clamp and the left clamp.

[0009] Preferably, the right-side clamp and the left-side clamp are provided with square openings. When the monitoring box is fixed on the insulating base, the square openings of the right-side clamp and the left-side clamp engage with the outer rubber coating of the middle fitting of the surge arrester to limit the position of the monitoring box.

[0010] Preferably, a battery panel slot is provided on the outer wall of both the right-side clamp and the left-side clamp. The battery panel slot is used to install a solar panel, and the solar panel is used to power the monitoring circuit board.

[0011] Preferably, the magnet box clamp includes a right clamp and a left clamp, and the right clamp and the left clamp are provided with a tenon and mortise fastening structure. The magnet box is rotatably connected to the right clamp and the left clamp by knurled pins. The magnet box is fixed to the fusion tube by the tenon and mortise fastening structure of the right clamp and the left clamp.

[0012] Preferably, a portion of the outer wall of the monitoring box is an arc surface.

[0013] Preferably, a portion of the outer wall of the magnet box is an arc surface.

[0014] Compared with the prior art, the present invention has at least the following advantages:

[0015] The monitoring device of the present invention includes a monitoring box, a monitoring box clamp, a magnetic box, a magnetic box clamp, and a terminal device. It is used for monitoring the operation status of a lightning arrester-fuse combination device. The monitoring box is fixed to the insulating base by the monitoring box clamp, and the magnetic box is fixed to the fuse tube by the magnetic box clamp. The monitoring box includes a horizontal reed switch and a vertical reed switch. The horizontal reed switch is used to sense the magnetic box to obtain a magnetic box sensing signal, and the vertical reed switch is used to sense the lightning arrester magnetic disconnector to obtain a disconnector sensing signal. The terminal device is used to acquire the magnetic box sensing signal and the disconnector sensing signal, and determine the lightning arrester tripping status and the fuse opening / closing status based on the magnetic box sensing signal and the disconnector sensing signal. This enables the device to detect both whether the lightning arrester has tripped and the fuse opening / closing status of the lightning arrester-fuse combination device, and allows the terminal device to observe the operation status of the lightning arrester and the fuse at any time.

[0016] Other features and advantages of the present invention will be set forth in the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the monitoring device of a lightning protection fuse combination device in an embodiment of the present invention.

[0019] Figure 2 This is a partial structural cross-sectional view of the monitoring device of a lightning protection fuse combination device according to an embodiment of the present invention.

[0020] Figure 3 This is a partial structural cross-sectional view of the monitoring device of a lightning protection fuse combination device according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the monitoring box of a monitoring device for a lightning protection fuse combination device according to an embodiment of the present invention.

[0022] Figure 5This is a schematic diagram of the lightning arrester tripping state and the fuse opening state of the lightning protection fuse combination device in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the monitoring box clamp of a monitoring device for a lightning protection fuse combination device according to an embodiment of the present invention.

[0024] Figure 7 This is a partial structural schematic diagram of the monitoring device of a lightning protection fuse combination device in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the magnet box clamp of the monitoring device of a lightning protection fuse combination device in an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram showing the installation location of the monitoring device of a lightning protection fuse combination device in an embodiment of the present invention.

[0027] Marked in the image:

[0028] ① Monitoring box, ①-1 vertical reed switch, ①-2 horizontal reed switch, ①-3 monitoring circuit board, ② solar panel, ③ magnet box, ④ lightning arrester magnetic disconnector, ⑤ monitoring box clamp, ⑤-1 right clamp, ⑤-2 left clamp. Detailed Implementation

[0029] The various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. Furthermore, numerous specific details are set forth in the following detailed embodiments to better illustrate the invention. Those skilled in the art will understand that the invention can be practiced without certain specific details. In some instances, means well known to those skilled in the art have not been described in detail in order to highlight the spirit of the invention.

[0030] This invention provides a monitoring device for a lightning protection fuse combination device, used for monitoring the operational status of the lightning protection fuse combination device. The lightning protection fuse combination device includes a surge arrester and a fuse. The surge arrester includes a surge core magnetic disconnector, an insulating base, etc., and the fuse includes a fuse tube, etc. The lightning protection fuse combination device is an existing electrical device. This embodiment does not make any structural improvements to the lightning protection fuse combination device, therefore the specific structure of the lightning protection fuse combination device will not be described in detail here, as it is well known to those skilled in the art.

[0031] See Figure 1-9The monitoring device proposed in this embodiment includes a monitoring box, a monitoring box clamp, a magnet box, a magnet box clamp, and a terminal device. The monitoring box is fixed to the insulating base by the monitoring box clamp, and the magnet box is fixed to the fuse tube by the magnet box clamp. The monitoring box includes a horizontal reed switch and a vertical reed switch, the horizontal reed switch being perpendicular to the vertical reed switch. The radial direction of the horizontal reed switch is parallel to the magnetic field of the built-in magnet of the magnet box, and the horizontal reed switch is used to sense the magnet box to obtain a magnet box sensing signal. The radial direction of the vertical reed switch is parallel to the magnetic field of the built-in magnet of the surge arrester magnetic disconnector, and the vertical reed switch is used to sense the surge arrester magnetic disconnector to obtain a disconnector sensing signal. The terminal device is used to acquire the magnet box sensing signal and the disconnector sensing signal, and determine the surge arrester tripping state and the fuse opening / closing state based on the magnet box sensing signal and the disconnector sensing signal.

[0032] Specifically, the horizontally placed reed switch and the vertically placed reed switch are perpendicular to each other to prevent mutual interference. The reed switch can sense a magnetic field parallel to itself, but cannot sense a magnetic field perpendicular to itself.

[0033] Furthermore, the monitoring box also includes a monitoring circuit board, which is used to receive the magnet box sensing signal and the disconnector sensing signal, and send the magnet box sensing signal and the disconnector sensing signal to the terminal device.

[0034] Specifically, a reed switch is a type of sensor. A reed switch sensor is mainly composed of a clarinet switch and a magnet or electromagnet. Both are magnetic sensors, but the difference is that the former is a mechanical switch that directly produces on / off action under the influence of a magnetic field, while the latter is an electronic device that outputs a switch signal (level signal) under the influence of a magnetic field. The monitoring circuit board is specifically used to output corresponding state values ​​of magnet box induction signals and disconnector induction signals to the terminal device based on the on / off action of the horizontal and vertical reed switches. The terminal device can intuitively give the conclusion of the surge arrester tripping status and the fuse opening / closing status based on the received magnet box induction signals and disconnector induction signals.

[0035] In the application of this invention, the lightning arrester magnetic disconnector will disconnect after a fault occurs. When the disconnection distance A is greater than 8-12mm, the vertical reed switch will not be able to sense the lightning arrester magnetic disconnector. At this time, the vertical reed switch outputs the disconnector sensing signal to the terminal device through the monitoring circuit board.

[0036] In the application of this invention, under normal circumstances, the magnet box is fixed to the fuse tube at a distance C (73±2mm) by the magnet box clamp. When the fuse tube malfunctions, the sensing distance B of the horizontal reed switch to the magnet box will increase. When the distance B is greater than 150-155mm, the horizontal reed switch will no longer sense the magnet box. At this time, the horizontal reed switch will output the magnet box sensing signal to the terminal device through the monitoring circuit board.

[0037] Furthermore, the monitoring box clamp includes a right clamp and a left clamp, and the right clamp and the left clamp are provided with a tenon and mortise fastening structure. The monitoring box is rotatably connected to the right clamp and the left clamp by knurled pins. The monitoring box is fixed to the insulating base by the tenon and mortise fastening structure of the right clamp and the left clamp.

[0038] Furthermore, the right-side clamp and the left-side clamp are provided with square openings. When the monitoring box is fixed on the insulating base, the square openings of the right-side clamp and the left-side clamp engage with the outer rubber coating of the middle fitting of the surge arrester to limit the position of the monitoring box.

[0039] Furthermore, the right-side clamp and the left-side clamp are provided with limit grooves and limit blocks to ensure that the range of motion of the clamp is controlled within the range that is most convenient for the human body to operate.

[0040] Furthermore, battery panel slots are provided on the outer walls of both the right-side clamp and the left-side clamp. These slots are used to install solar panels, which in turn supply power to the monitoring circuit board.

[0041] Furthermore, similar to the monitoring box clamp structure, the magnet box clamp also includes a right clamp and a left clamp. The right clamp and the left clamp are provided with a tenon and mortise fastening structure. The magnet box is rotatably connected to the right clamp and the left clamp by knurled pins. The magnet box is fixed to the molten tube by the tenon and mortise fastening structure of the right clamp and the left clamp. More specifically, a 1.5mm thick rubber sheet is added between the molten tube and the magnet box clamp to increase friction and fix the magnet box.

[0042] Furthermore, a portion of the outer wall of the monitoring box is an arc surface, the purpose of which is to adapt to the arc surface of the monitoring box clamp. When the monitoring box and the monitoring box clamp are closed, they form a cylindrical inner space to adapt to the wall structure of the insulating base.

[0043] Furthermore, a portion of the outer wall of the magnet box is an arc surface, the purpose of which is to adapt to the arc surface of the magnet box clamp. When the magnet box and the magnet box clamp are closed, they form a cylindrical inner space to adapt to the wall structure of the fusion tube.

[0044] In summary, the monitoring device of this invention can detect whether the surge arrester of the lightning arrester-fuse combination device has tripped and can also detect the opening and closing of the fuse. The operating status of the surge arrester and the fuse can be observed on the terminal device at any time. It has a relatively well-fitting structure that saves space, has a simple and beautiful appearance, is not easy to accumulate dust and has good self-cleaning properties. The installation structure and the spacing of the umbrella skirt fit together to make the solar panel more secure.

[0045] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles of the embodiments, their practical application, or their technological improvements in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A monitoring device for a lightning arrester-fuse combination device, the lightning arrester-fuse combination device comprising a surge arrester and a fuse, the surge arrester comprising a surge arrester magnetic disconnector and an insulating base, the fuse comprising a fuse tube, characterized in that, The monitoring device includes a monitoring box, a monitoring box clamp, a magnet box, a magnet box clamp, and a terminal device. The monitoring box is fixed to the insulating base by the monitoring box clamp, and the magnet box is fixed to the fuse tube by the magnet box clamp. The monitoring box includes a horizontal reed switch and a vertical reed switch, with the horizontal reed switch perpendicular to the vertical reed switch. The radial direction of the horizontal reed switch is parallel to the magnetic field of the built-in magnet of the magnet box, and the horizontal reed switch is used to sense the magnet box to obtain a magnet box sensing signal. The radial direction of the vertical reed switch is parallel to the magnetic field of the built-in magnet of the surge arrester magnetic disconnector, and the vertical reed switch is used to sense the surge arrester magnetic disconnector to obtain a disconnector sensing signal. The terminal device is used to acquire the magnet box sensing signal and the disconnector sensing signal, and determine the surge arrester tripping status and fuse opening / closing status based on the magnet box sensing signal and the disconnector sensing signal. The monitoring box clamp includes a right clamp and a left clamp, and the right clamp and the left clamp of the monitoring box clamp are provided with a tenon and mortise fastening structure; the monitoring box is rotatably connected to the right clamp and the left clamp of the monitoring box clamp by knurled pins, and the monitoring box is fixed to the insulating base by the tenon and mortise fastening structure of the right clamp and the left clamp of the monitoring box clamp; The magnet box clamp includes a right clamp and a left clamp. The right clamp and the left clamp of the magnet box clamp are provided with a tenon and mortise fastening structure. The magnet box is rotatably connected to the right clamp and the left clamp of the magnet box clamp by knurled pins. The magnet box is fixed to the melting tube by the tenon and mortise fastening structure of the right clamp and the left clamp of the magnet box clamp. The monitoring box also includes a monitoring circuit board, which is used to receive the magnet box sensing signal and the disconnector sensing signal, and send the magnet box sensing signal and the disconnector sensing signal to the terminal device; The right and left clamps of the monitoring box clamp are provided with square openings. When the monitoring box is fixed on the insulating base, the square openings of the right and left clamps of the monitoring box clamp engage with the outer rubber coating of the middle hardware of the surge arrester to limit the position of the monitoring box.

2. The monitoring device for the lightning protection fuse combination device as described in claim 1, characterized in that, The outer walls of both the right and left clamps of the monitoring box clamp are provided with battery panel slots, which are used to install solar panels and to power the monitoring circuit board.

3. The monitoring device for the lightning protection fuse combination device as described in any one of claims 1-2, characterized in that, A portion of the outer wall of the monitoring box is an arc surface.

4. The monitoring device for the lightning protection fuse combination device as described in any one of claims 1-2, characterized in that, A portion of the outer wall of the magnet box is an arc surface.

Images