An intelligent monitoring device for distribution lines based on online power extraction

Abstract

The present invention belongs to the technical field of basic equipment of online monitoring system of power grid, and particularly relates to an intelligent monitoring device for distribution lines based on online power supply. It includes two buckled shells with shell-like structures and an open-and-closed current transformer, and the surfaces of the two shells buckled with each other are provided with semi-cylindrical mounting grooves; the shell is divided into an upper shell located on the upper side; it also includes a level sensor and a level warning light; a horizontal mounting surface is provided at the bottom of the lower shell, and an ultrasonic sensor, a bottom camera and a buzzer are dug on the horizontal mounting surface; it also includes a conical elastic rubber ring; it also includes a plurality of pre-tightening heat-conducting sheets of thin sheet structure arranged in the mounting groove; the present invention has a simple and compact structure, and has a good anti-slip effect after installation, and can effectively prevent the device from flipping or sliding on the cable.

Description

Technical Field

[0001] The present invention belongs to the technical field of basic equipment of an online monitoring system for a power grid, and in particular relates to an intelligent monitoring device for a distribution line based on online power extraction. Background Art

[0002] In recent years, driven by the sustained development of the national economy, the power demand of my country's power grid has grown rapidly, and the coverage of distribution lines has also expanded rapidly. The distribution lines are distributed in a wide area, with long transmission distances, and the terrain conditions along the lines are complex and changeable. Their safe operation is greatly affected by the environment, climate, etc. At present, in the safe space of the overhead distribution line corridor, flashover and tripping accidents of distribution lines caused by various accidents such as large-scale machinery construction, building houses, tree growth, and fire have become the main hazards, seriously threatening the safe operation of the power grid. At present, the visual online monitoring of high-voltage distribution lines has been gradually implemented, but there is no better solution for the visual monitoring of distribution lines. In order to reduce the size of online monitoring equipment, simplify the structure, and improve stability, a large number of miniaturized and miniaturized online monitoring equipment based on CT (mutual inductor) online power supply have emerged. However, on the one hand, the structure of such equipment is generally designed as a closed structure to better protect the internal precision sensors and cameras, resulting in the internal magnetism and the heat generated by the coil during the long-term power supply process cannot be dissipated in time, and the continuous high-temperature operation reduces the service life and monitoring accuracy. On the other hand, such devices are generally clamped on the cable with an open and closed structure. When the cable shakes and tilts, it is easy to slide or rotate on the cable. Even if it is equipped with a structure such as an elastic rubber ring 10, the fastening effect will be reduced after a period of use due to oxidation of the elastic rubber ring 10 and other reasons. Summary of the invention

[0003] The purpose of the invention is to provide an intelligent monitoring device for distribution lines based on online power extraction, which has a compact structure, is easy to use, and has better fastening and heat dissipation effects after installation.

[0004] To achieve the above purpose, the present invention adopts the following technical solution.

[0005] An intelligent monitoring device for a power distribution line based on online power supply comprises two shells with a shell-like structure that can be buckled, and a split-type current transformer arranged in the shell, wherein two transformer cores of the split-type current transformer are respectively arranged in the two shells, and semi-cylindrical mounting grooves 9a are arranged on the mutually buckled surfaces of the two shells; the mounting grooves 9a on the two shells form clamping holes 9d after the shells are buckled;

[0006] The shell is divided into an upper shell 1 located on the upper side and a lower shell 2 located on the lower side; screw hole seats 1e are correspondingly provided on both sides of the upper shell 1 and the lower shell 2, and screw holes 1f are provided on the screw hole seats;

[0007] It also includes a level sensor and a level warning light 1a disposed inside the upper housing 1 or the lower housing 2;

[0008] A horizontal mounting surface 2a is provided at the bottom of the lower housing 2, and a plurality of mounting holes are dug on the horizontal mounting surface 2a and are respectively provided with an ultrasonic sensor 2b, a bottom camera 2c and a buzzer 2d; side cameras 2e are also respectively provided on both sides of the lower housing 2;

[0009] It also includes two tapered elastic rubber rings 10 arranged at the outlets on both sides of the clamping hole 9d, and the elastic rubber ring 10 is surrounded by two symmetrical halves;

[0010] The bottom of the installation groove 9a is high in the middle and low on both sides, and the bottom of the groove includes a semi-cylindrical limiting surface 9b in the middle and semi-conical extrusion surfaces 9c on both sides of the limiting surface 9b;

[0011] It also includes a plurality of pre-tightening heat-conducting plates of thin-sheet structure arranged in the installation groove, the pre-tightening heat-conducting plates include a middle force-bearing portion 8b, arc-shaped portions 8c located on both sides of the force-bearing portion 8b and extending outward and abutting against the edge of the clamping hole 9d, and an extrusion portion 8d located at the end of the arc-shaped portion 8c and extending in the axial direction of the clamping hole 9d and abutting against the outer wall of the elastic rubber ring 10; the force-bearing portion 8b is non-contactly arranged on the inner side of the limiting surface 9b under the support of the arc-shaped portions 8c on both sides.

[0012] A further improvement of the above-mentioned intelligent monitoring device for distribution lines based on online power extraction further includes positioning grooves 9e uniformly arranged on the inner wall of the clamping hole 9d;

[0013] The number of positioning grooves 9e is the same as the number of pre-tightening heat conducting plates, and the width of positioning grooves 9e is greater than or equal to the width of pre-tightening heat conducting plates. Each pre-tightening heat conducting plate is embedded in the positioning groove 9e, and both ends of the positioning groove 9e extend out of the shell to form heat dissipation ports 9f.

[0014] A further improvement of the above-mentioned intelligent monitoring device for distribution lines based on online power supply is provided, wherein annular anti-slip shoulders 9g are provided on the outlet edges on both sides of the clamping hole 9d, and anti-slip grooves 10a adapted to the anti-slip shoulders 9g are provided on the outer wall of the elastic rubber ring 10.

[0015] A further improvement on the aforementioned intelligent monitoring device for distribution lines based on online power supply, wherein the extrusion portion 8d is composed of multiple sections, including a corner section 80 extending from the arc portion 8c and extending toward the outer wall of the elastic rubber ring 10, an extrusion section 81 extending outward from the end of the corner section 80 and attached to the outer wall of the elastic rubber ring 10, a blocking section 82 extending from the end of the extrusion section 81 toward the wall of the clamping hole 9d and then supporting the anti-slip shoulder 9g, and an end section 83 extending outward from the end of the blocking section 82 and then extending out from the heat dissipation port 9f.

[0016] A further improvement to the above-mentioned intelligent monitoring device for distribution lines based on online power extraction also includes a transformer circuit arranged in the shell, wherein the shell is provided with a power switch 1g for disconnecting the transformer circuit.

[0017] As a further improvement to the above-mentioned intelligent monitoring device for distribution lines based on online power supply, an alarm indicator light 2f is also provided on the bottom of the lower shell body and located on the shell walls on both sides of the installation surface.

[0018] A further improvement on the aforementioned intelligent monitoring device for distribution lines based on online power supply is provided, wherein a plurality of cooling channels 2g are provided inside the upper shell 2, the cooling channels 2g extend from the top downward along the shell walls on both sides, a water collecting trough 2i is provided on the top of the upper shell 2, and the upper end of the cooling channel 2g extends to the bottom of the water collecting trough 2i.

[0019] Its beneficial effects are:

[0020] The intelligent monitoring device for distribution lines based on online power supply of the present invention has a simple and compact structure, has a good anti-slip effect after installation, can effectively prevent the device from flipping or sliding on the cable, and can maintain a stable connection and fixation for a long time through pre-tightening. At the same time, it can improve the internal heat dissipation effect of the device, balance the internal temperature difference, and reduce the problem of excessive temperature in the central area. At the same time, it can realize multi-area fixation of the cable, isolate the cable in the middle area from the device housing, and prevent wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the main view of the intelligent monitoring device for distribution lines based on online power extraction;

[0022] Figure 2 It is a side view of an intelligent monitoring device for distribution lines based on online power extraction;

[0023] Figure 3 This is the bottom view of the intelligent monitoring device for distribution lines based on online power extraction;

[0024] Figure 4 2 is a schematic diagram of the structure of the lower shell;

[0025] Figure 5 It is a top view of the internal structure of the intelligent monitoring device for distribution lines based on online power extraction;

[0026] Figure 6 It is an oblique view of the internal structure of the intelligent monitoring device for distribution lines based on online power extraction;

[0027] Figure 7 It is a cross-sectional view of the shell structure of the intelligent monitoring device for distribution lines based on online power extraction;

[0028] Figure 8 yes Figure 7 A partial enlarged view of the middle A area;

[0029] Fig. 9 It is a schematic diagram of the structure of the further improved middle and upper shell. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with specific embodiments.

[0031] like Figure 1 As shown, an intelligent monitoring device for distribution lines based on online power supply of the present invention is mainly installed on structures such as transmission cables for online monitoring and data collection, and belongs to the basic hardware structure of the online monitoring system, including two buckled shells with shell-like structures, and an open-close current transformer arranged in the shells, wherein the two transformer cores of the open-close current transformer are respectively arranged in the two shells, and semi-cylindrical mounting grooves 9a are arranged on the mutually buckled surfaces of the two shells; the mounting grooves 9a on the two shells form clamping holes 9d after the shells are buckled; the shell-like open-close structure is one of the most common fixing structures, and after the two shells are spliced ​​together, the transmission cable is fixed in the clamping hole 9d.

[0032] like Figure 2 , Figure 3 As shown, the shell is divided into an upper shell 1 located on the upper side, and a lower shell 2 located on the lower side; screw hole seats 1e are correspondingly provided on both sides of the upper shell 1 and the lower shell 2, and screw holes 1f are provided on the screw hole seats; screws are provided in the screw hole seats and the screw holes 1f. In a preferred embodiment, in order to prevent the screws from being lost, anti-slip screws should be used. After the screws are tightened, the two shells are prevented from opening, ensuring that the device can be hung on the cable.

[0033] It also includes a level sensor and a level warning light 1a arranged inside the upper shell 1 or the lower shell 2; the level sensor and the level warning light 1a are used to improve the installation accuracy during installation and use, and ensure that the device is installed and used in the correct direction.

[0034] In order to complete online monitoring and necessary data collection, a horizontal mounting surface 2a is provided at the bottom of the lower shell 2, and a plurality of mounting holes are dug on the horizontal mounting surface 2a and ultrasonic sensors 2b, bottom cameras 2c and buzzers 2d are respectively provided thereon; side cameras 2e are also provided on both sides of the lower shell 2; the mounting surface arranged at the bottom can reduce the probability of adhesion and coverage of sewage stains, etc., and facilitates data acquisition. When in use, the device can be installed on the cable above the equipment or area to be monitored. Various sensors, cameras, buzzers and other components as well as driving circuit boards can be purchased as finished products according to standards and installed.

[0035] In order to facilitate installation, commissioning and maintenance, in addition to the necessary transformer circuits in the housing, the housing is provided with a power switch 1g for disconnecting the transformer circuit, so as to quickly start and shut down the device for installation and commissioning.

[0036] In order to prevent misoperation and accidental damage, an alarm indicator light 2f is provided on the shell wall on both sides of the mounting surface at the bottom of the lower shell. The alarm indicator light flashes to warn people and prevents them from accidentally touching the equipment. It can also warn people when equipment fails. The structure of the warning light and the corresponding monitoring circuit are common structures and products, which will not be described in detail here.

[0037] In order to facilitate clamping and prevent the device from shaking left and right, the present invention also includes two conical elastic rubber rings 10 arranged in the outlets on both sides of the clamping hole 9d, and the elastic rubber ring 10 is surrounded by two symmetrical halves; during use, the pressure after the two shells are closed presses the elastic rubber ring 10 against the cable to prevent sliding and detaching.

[0038] In the conventional structure, only the elastic rubber rings 10 at both ends are used to fix and clamp the cable. After installation, the elastic rubber rings 10 that are deformed and squeezed by force are in close contact with the cable, so that both ends of the clamping hole 9d are basically completely closed. In fact, the only part that has the effect of fixing and preventing the cable from falling off is the coil wrapping area, which leads to many disadvantages. First, the clamping effect is poor. Once the elastic rubber ring 10 is heated or oxidized and deformed, the clamping effect will decrease rapidly. Second, the closed structure formed after installation is easy to cause heat to accumulate in the device, especially the temperature near the cable interruption area rises rapidly, which reduces the life of the internal components. The cable that is not effectively fixed in the middle section is also more likely to wear the internal shell.

[0039] To this end, the present invention further improves the traditional structure, wherein the bottom of the installation groove 9a is high in the middle and low on both sides, and the bottom of the groove includes a semi-cylindrical limiting surface 9b in the middle and semi-conical extrusion surfaces 9c on both sides of the limiting surface 9b;

[0040] like Figure 5 , Figure 6 , Figure 7 As shown, it also includes a plurality of pre-tightening heat-conducting sheets of thin-sheet structure arranged in the installation groove 9a, and the pre-tightening heat-conducting sheets are made of elastic metal material, including a middle force-bearing portion 8b, arc-shaped portions 8c located on both sides of the force-bearing portion 8b and extending outward and abutting against the edge of the clamping hole 9d, and an extrusion portion 8d located at the end of the arc-shaped portion 8c and extending toward the axial direction of the clamping hole 9d and abutting against the outer wall of the elastic rubber ring 10; the force-bearing portion 8b is non-contactly arranged on the inner side of the limiting surface 9b under the support of the arc-shaped portions 8c on both sides.

[0041] Based on the above structure, during the installation of the two shell covers, the middle force-bearing part 8b will be squeezed with the middle cable, and the force-bearing part 8b will approach the limit surface 9b. During the approaching process, as the angle between the arc portion 8c and the force-bearing part 8b increases, while the force-bearing part 8b clamps the cable, the arc portion 8c rises under the action of the extrusion surface 9c and causes the extrusion part 8d to be squeezed and approach the elastic rubber ring 10, so that the elastic rubber ring 10 is pre-tightened and further clamps the cable. After the installation is completed, the elasticity of the pre-tightening heat conductive sheet causes the cable interrupted at the clamping hole 9d to be clamped by the force-bearing part 8b, and the elastic rubber ring 10 is squeezed. After the pre-tightening heat conductive sheet is installed, it is in a pre-tightened state, which can continuously maintain and strengthen the clamping effect of the middle section and both ends of the cable.

[0042] While strengthening the fixed clamping effect of the middle section and both ends, it can prevent the cable from directly contacting the inner shell of the device, avoiding friction damage. At the same time, the excellent thermal conductivity of the pre-tightening heat conductive sheet can use heat conduction to transfer the internal accumulated heat to both sides and export it to the edge of the clamping hole, thereby balancing the internal temperature difference and improving the heat dissipation effect.

[0043] In order to further improve the fixing effect and the heat dissipation effect, the present invention also includes positioning grooves 9e uniformly arranged on the inner wall of the clamping hole 9d; the number of positioning grooves 9e is the same as the number of pre-tightening heat conductive sheets, and the width of the positioning grooves 9e is greater than or equal to the width of the pre-tightening heat conductive sheets. Each pre-tightening heat conductive sheet is embedded in the positioning groove 9e, and both ends of the positioning groove 9e extend out of the shell to form a heat dissipation port 9f. The positioning groove can prevent the pre-tightening heat conductive sheet from rotating and shaking, and improve the stability after clamping. The heat dissipation port can make the pre-tightening heat conductive sheet directly contact the external air, and use heat conduction to directly dissipate the internal heat through the heat dissipation port.

[0044] In order to further improve the fastening effect and prevent the rubber ring from moving away to both sides, annular anti-slip shoulders 9g are provided on the outlet edges on both sides of the clamping hole 9d, and anti-slip grooves 10a adapted to the anti-slip shoulders 9g are provided on the outer wall of the elastic rubber ring 10.

[0045] In a further improvement, the extrusion portion 8d is composed of multiple sections, including a corner section 80 extending from the arc portion 8c and extending toward the outer wall of the elastic rubber ring 10, an extrusion section 81 extending outward from the end of the corner section 80 and attached to the outer wall of the elastic rubber ring 10, a blocking section 82 extending from the end of the extrusion section 81 toward the wall of the clamping hole 9d and able to resist the anti-slip shoulder 9g, and an end section 83 extending outward from the end of the blocking section 82 and extending out from the heat dissipation port 9f.

[0046] Based on this structure, after the pre-tightening heat conducting sheet is pre-tightened, the blocking section will press against the anti-slip shoulder 9g to prevent the end from extending too far out of the clamping hole, thereby better fixing the pre-tightening heat conducting sheet.

[0047] like Fig. 9As shown, the above-mentioned intelligent monitoring device for distribution lines based on online power supply is further improved, wherein a plurality of cooling channels 2g are further provided inside the upper shell 2, and the cooling channels 2g extend from the top downward along the shell walls on both sides, and a water collecting trough 2i is provided on the top of the upper shell 2, and the upper end of the cooling channel 2g extends to the bottom of the water collecting trough 2i.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An intelligent monitoring device for distribution lines based on online power supply, comprising two buckled shells with shell-like structures, and a split-type current transformer arranged in the shells, wherein two transformer cores of the split-type current transformer are respectively arranged in the two shells, characterized in that: A semi-cylindrical mounting groove is provided on the mutually buckled surfaces of the two shells; the mounting grooves on the two shells form a clamping hole after the shells are buckled together; The shell is divided into an upper shell located on the upper side and a lower shell located on the lower side; screw hole seats are correspondingly provided on both sides of the upper shell and the lower shell, and screw holes are provided on the screw hole seats; It also includes a level sensor and a level warning light disposed inside the upper shell or the lower shell; A horizontal mounting surface is provided at the bottom of the lower shell, and a plurality of mounting holes are dug on the horizontal mounting surface and ultrasonic sensors, bottom cameras and buzzers are respectively provided thereon; side cameras are also provided on both sides of the lower shell; It also includes two tapered elastic rubber rings arranged in the outlets on both sides of the clamping hole, and the elastic rubber rings are surrounded by two symmetrical halves; The bottom of the installation groove is high in the middle and low on both sides, and the bottom of the groove includes a semi-cylindrical limiting surface in the middle and semi-conical extrusion surfaces on both sides of the limiting surface; It also includes a plurality of pre-tightening heat-conducting sheets of thin sheet structure arranged in the installation groove, the pre-tightening heat-conducting sheets including a force-bearing portion in the middle, arc-shaped portions located on both sides of the force-bearing portion and extending outwards and abutting against the edge of the clamping hole, and an extrusion portion located at the end of the arc-shaped portion and extending in the axial direction of the clamping hole and abutting against the outer wall of the elastic rubber ring; the force-bearing portion is non-contactly arranged on the inner side of the limiting surface under the support of the arc-shaped portions on both sides; It also includes positioning grooves evenly arranged on the inner wall of the clamping hole; The number of the positioning grooves is the same as the number of the pre-tightening heat conducting plates, and the width of the positioning grooves is greater than or equal to the width of the pre-tightening heat conducting plates. Each pre-tightening heat conducting plate is embedded in the positioning groove, and both ends of the positioning grooves extend out of the shell to form heat dissipation ports.

2. The intelligent monitoring device for distribution lines based on online power extraction according to claim 1 is characterized in that: Annular anti-slip shoulders are arranged at the outlet edges on both sides of the clamping hole, and anti-slip grooves adapted to the anti-slip shoulders are arranged on the outer wall of the elastic rubber ring.

3. The intelligent monitoring device for distribution lines based on online power extraction according to claim 1 is characterized in that: The extrusion portion is composed of multiple sections, including a corner section extending from the arc portion and extending toward the outer wall of the elastic rubber ring, an extrusion section extending outward from the end of the corner section and attached to the outer wall of the elastic rubber ring, a blocking section extending from the end of the extrusion section toward the clamping hole wall and able to resist the anti-slip shoulder, and an end section extending outward from the end of the blocking section and then extending out from the heat dissipation port.

4. The intelligent monitoring device for distribution lines based on online power extraction according to claim 1 further comprises a mutual inductor circuit arranged in the housing, characterized in that: The housing is provided with a power switch for disconnecting the transformer circuit.

5. The intelligent monitoring device for distribution lines based on online power extraction according to claim 1 is characterized in that: The bottom of the lower shell is also provided with alarm indicator lights located on the shell walls on both sides of the installation surface.

6. The intelligent monitoring device for distribution lines based on online power extraction according to claim 1 is characterized in that: The upper shell is also provided with a plurality of cooling channels, which extend downward from the top along the shell walls on both sides. A water collecting trough is provided on the top of the upper shell, and the upper end of the cooling channel extends to the bottom of the water collecting trough.

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