Lightning arrester on-line monitoring device based on resistive current measurement principle

Abstract

The utility model discloses a lightning arrester on-line monitoring device based on a resistive current measurement principle, which comprises a lightning arrester on-line monitor, and an installation assembly is fixedly installed at the lower part of the outer surface of one side of the lightning arrester on-line monitor. The mounting assembly comprises a connecting block, a mounting block, a damping rotating shaft hinge, a gasket, a fixing bolt, an anti-loosening assembly, a through groove and a threaded hole, and the anti-loosening assembly comprises a protective cover, a movable block, a through hole, a guide rod and a compression spring. According to the lightning arrester on-line monitoring device based on the resistive current measurement principle, the installation assembly and the anti-loosening assembly are arranged, so that a lightning arrester on-line monitor is more stable after being installed, a fixing bolt is not prone to loosening, and a damping rotating shaft hinge is arranged to enable the lightning arrester on-line monitor to be more stable and not prone to loosening. The angle of the lightning arrester online monitor can be adjusted conveniently after the lightning arrester online monitor is installed, and the applicability of the lightning arrester online monitor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of on-line monitoring of lightning arresters, and specifically relates to an on-line monitoring device for lightning arresters based on the principle of measuring resistive current. Background Technique

[0002] The on-line monitoring device of the lightning arrester monitors the working conditions of the lightning arrester in real time, including parameters such as total current, resistive current, and number of operations. The monitoring of these parameters is crucial for evaluating the performance of the lightning arrester; the resistive leakage current often only accounts for a small part of the total current. Therefore, separating the resistive current from the total current for monitoring is the key to judging the state of the lightning arrester; by adopting high-speed acquisition of the reference voltage and the leakage current of the lightning arrester and using the harmonic analysis method for fast Fourier transform, the resistive component (fundamental wave, harmonic wave) and capacitive component can be calculated, etc., and then the performance state of the lightning arrester can be judged. Therefore, the on-line monitor of the lightning arrester judges the performance state of the lightning arrester by monitoring and analyzing the change of the resistive current in real time, which is of great significance for ensuring the safety of the power grid and preventing lightning disasters.

[0003] In the prior art, when installing the on-line monitor of the lightning arrester, the following disadvantages exist:

[0004] 1. The angle of the on-line monitor of the lightning arrester cannot be adjusted after installation, which limits the connection of the external grounding wire of the on-line monitor of the lightning arrester.

[0005] 2. In the prior art, the on-line monitor of the lightning arrester is fixed on the bracket by bolts, and the bolts are prone to looseness, and the installation is not stable enough.

[0006] Therefore, we propose an on-line monitoring device for lightning arresters based on the principle of measuring resistive current. Content of the Utility Model

[0007] (I) Technical Problems to be Solved

[0008] Aiming at the deficiencies of the prior art, the utility model provides an on-line monitoring device for lightning arresters based on the principle of measuring resistive current, which is convenient for improving the stability after installation, and is convenient for adjusting the angle of the on-line monitor of the lightning arrester according to needs after installation, etc., and can effectively solve the problems in the background technique.

[0009] (II) Technical Solutions

[0010] To achieve the above object, the technical solution adopted by the present utility model is as follows: An on-line monitoring device for an arrester based on the principle of measuring resistive current, comprising an on-line monitor for the arrester. A mounting assembly is fixedly installed at the lower part of the outer surface of one side of the on-line monitor for the arrester. The mounting assembly includes a connecting block, a mounting block, a damping rotating shaft hinge, a gasket, a fixing bolt, an anti-loosening assembly, a through groove and a threaded hole. The anti-loosening assembly includes a protective cover, a movable block, a through hole, a guide rod and a compression spring. One end of the outer surface of the connecting block is fixedly connected to the lower part of the outer surface of one side of the on-line monitor for the arrester. The through groove is opened at one end of the upper outer surface of the mounting block close to the connecting block. The anti-loosening assembly is installed at the upper part of the through groove.

[0011] Preferably, the damping rotating shaft hinge is connected between the outer surface of the other end of the connecting block and the outer surface of one end of the mounting block, and the connecting block is rotatably connected to the mounting block through the damping rotating shaft hinge.

[0012] Preferably, the threaded hole is opened at one end of the upper outer surface of the mounting block away from the connecting block. The gasket is sleeved on the outer wall of the upper part of the fixing bolt, and the fixing bolt is in threaded connection with the threaded hole.

[0013] Preferably, the protective cover is located at the upper part of the through groove, and the lower outer surface of the protective cover is fixedly connected to the upper outer surface of the mounting block. The movable block penetrates through the through groove, and the outer wall of the movable block is in sliding connection with the through groove.

[0014] Preferably, the number of the through holes, the guide rods and the compression springs is two groups each. The two groups of through holes are opened on the left and right sides of the lower outer surface of the movable block. The two groups of guide rods are fixedly installed on the left and right sides of the upper part of the inner cavity of the protective cover, and the lower ends of the guide rods extend into the through holes. The compression spring is movably sleeved on the outer wall of the guide rod. The lower outer surface of the compression spring is fixedly connected to the upper outer surface of the movable block, and the upper outer surface of the compression spring is fixedly connected to the upper part of the inner cavity of the protective cover.

[0015] Preferably, the outer wall of the movable block is in sliding connection with the inner wall of the protective cover. The movable block is slidably connected to the outer wall of the guide rod through the through hole. The upper outer surface of the movable block is elastically connected to the upper part of the inner cavity of the protective cover through the compression spring.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present utility model provides an on-line monitoring device for an arrester based on the principle of measuring resistive current, and has the following beneficial effects:

[0018] 1. The on-line monitoring device for lightning arresters based on the principle of measuring resistive current is provided with an installation component. Through the provided anti-loosening component, the on-line monitor of the lightning arrester is more stable after installation, and the fixing bolts are not easy to loosen.

[0019] 2. The on-line monitoring device for lightning arresters based on the principle of measuring resistive current is provided with a damping rotating shaft hinge, which is convenient for adjusting the angle after the on-line monitor of the lightning arrester is installed, and improves the applicability of the on-line monitor of the lightning arrester. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the on-line monitoring device for lightning arresters based on the principle of measuring resistive current of the present utility model.

[0021] Figure 2 It is a schematic diagram of the structure of the installation component in the on-line monitoring device for lightning arresters based on the principle of measuring resistive current of the present utility model.

[0022] Figure 3 It is a schematic diagram of the partial structure of the installation component in the on-line monitoring device for lightning arresters based on the principle of measuring resistive current of the present utility model.

[0023] Figure 4 It is a side sectional view of the anti-loosening component in the on-line monitoring device for lightning arresters based on the principle of measuring resistive current of the present utility model.

[0024] In the figure: 1. On-line monitor of lightning arrester; 2. Installation component; 3. Connecting block; 4. Installation block; 5. Damping rotating shaft hinge; 6. Gasket; 7. Fixing bolt; 8. Anti-loosening component; 9. Through groove; 10. Threaded hole; 11. Protective cover; 12. Movable block; 13. Through hole; 14. Guide rod; 15. Compression spring. Detailed Embodiment

[0025] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] This embodiment is an on-line monitoring device for lightning arresters based on the principle of measuring resistive current.

[0027] Such as Figures 1-4As shown in the figure, it includes an on-line arrester monitor 1. The lower part of the outer surface of one side of the on-line arrester monitor 1 is fixedly installed with an installation component 2. The installation component 2 includes a connecting block 3, an installation block 4, a damping rotating shaft hinge 5, a gasket 6, a fixing bolt 7, an anti-loosening component 8, a through groove 9 and a threaded hole 10. The anti-loosening component 8 includes a protective cover 11, a movable block 12, a through hole 13, a guide rod 14 and a compression spring 15. One end of the outer surface of the connecting block 3 is fixedly connected to the lower part of the outer surface of one side of the on-line arrester monitor 1. The through groove 9 is opened at one end of the upper outer surface of the installation block 4 close to the connecting block 3. The anti-loosening component 8 is installed on the upper part of the through groove 9.

[0028] The damping rotating shaft hinge 5 is connected between the outer surface of the other end of the connecting block 3 and the outer surface of one end of the installation block 4, and the connecting block 3 is rotatably connected to the installation block 4 through the damping rotating shaft hinge 5; the threaded hole 10 is opened at one end of the upper outer surface of the installation block 4 far from the connecting block 3. The gasket 6 is sleeved on the outer wall of the upper part of the fixing bolt 7, and the fixing bolt 7 is threadedly connected to the threaded hole 10; the protective cover 11 is located above the through groove 9, and the lower outer surface of the protective cover 11 is fixedly connected to the upper outer surface of the installation block 4. The movable block 12 penetrates through the through groove 9, and the outer wall of the movable block 12 is slidably connected to the through groove 9; the number of the through holes 13, the guide rods 14 and the compression springs 15 is two groups each. The two groups of through holes 13 are opened on the left and right sides of the lower outer surface of the movable block 12. The two groups of guide rods 14 are fixedly installed on the left and right sides of the upper part of the inner cavity of the protective cover 11, and the lower ends of the guide rods 14 extend into the through holes 13. The compression spring 15 is movably sleeved on the outer wall of the guide rod 14. The lower outer surface of the compression spring 15 is fixedly connected to the upper outer surface of the movable block 12, and the upper outer surface of the compression spring 15 is fixedly connected to the upper part of the inner cavity of the protective cover 11; the outer wall of the movable block 12 is slidably connected to the inner wall of the protective cover 11. The movable block 12 is slidably connected to the outer wall of the guide rod 14 through the through hole 13. The upper outer surface of the movable block 12 is elastically connected to the upper part of the inner cavity of the protective cover 11 through the compression spring 15.

[0029] It should be noted that the present utility model is an on-line monitoring device for lightning arresters based on the principle of measuring resistive current. The lightning arrester on-line monitor 1 described in the text belongs to the prior art. The lightning arrester on-line monitor 1 is based on the principle of measuring resistive current and judges the performance state of the lightning arrester by real-time monitoring and analysis of the change of the resistive current. This is of great significance for ensuring the safety of the power grid and preventing lightning disasters, and can be effectively known to those skilled in the art, so no further details will be elaborated here. The installed installation component 2 requires the lightning arrester on-line monitor 1 to be installed on a sheet metal rack and connected by fixing bolts 7 during installation. After installation, the movable block 12 in the anti-loosening component 8 is squeezed, and the movable block 12 slides along the inner wall of the protective cover 11. The movable block 12 slides along the guide rod 14 through the through hole 13, and the movable block 12 squeezes the compression spring 15. When the fixing bolt 7 is connected to the external sheet metal bracket, the compression spring 15 is in a compressed state, and the axial tension of the fixing bolt 7 is enhanced by releasing the reaction force, thereby increasing the friction force and generating a resistance moment, and further preventing the loosening of the threaded connection of the fixing bolt 7. By setting the damping rotating shaft hinge 5, the connecting block 3 is rotatably connected to the mounting block 4 through the damping rotating shaft hinge 5. Therefore, it is convenient to adjust the angle of the lightning arrester on-line monitor 1 and improve the applicability after installation of the lightning arrester on-line monitor 1.

[0030] It should be noted that in this text, relational terms such as first and second (No. 1, No. 2) are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0031] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. An on-line monitoring device for arresters based on the principle of measuring resistive current, comprising an on-line monitor for arresters (1), characterized in that: A mounting component (2) is fixedly installed at the lower part of the outer surface of one side of the arrester on-line monitor (1). The mounting component (2) includes a connecting block (3), a mounting block (4), a damping rotating shaft hinge (5), a gasket (6), a fixing bolt (7), an anti-loosening component (8), a through groove (9) and a threaded hole (10). And the anti-loosening component (8) includes a protective cover (11), a movable block (12), a through hole (13), a guide rod (14) and a compression spring (15). One end of the outer surface of the connecting block (3) is fixedly connected to the lower part of the outer surface of one side of the arrester on-line monitor (1). The through groove (9) is opened at one end of the upper outer surface of the mounting block (4) close to the connecting block (3). The anti-loosening component (8) is installed at the upper part of the through groove (9).

2. The on-line monitoring device for lightning arresters based on the principle of measuring resistive current according to claim 1, characterized in that: The damping rotating shaft hinge (5) is connected between the outer surface of the other end of the connecting block (3) and the outer surface of one end of the mounting block (4). And the connecting block (3) is rotatably connected to the mounting block (4) through the damping rotating shaft hinge (5).

3. The on-line monitoring device for arrester based on the principle of measuring resistive current according to claim 2, characterized in that: The threaded hole (10) is opened at one end of the upper outer surface of the mounting block (4) far from the connecting block (3). The gasket (6) is sleeved on the outer wall of the upper part of the fixing bolt (7). And the fixing bolt (7) is in threaded connection with the threaded hole (10).

4. An on-line monitoring device for lightning arresters based on the principle of measuring resistive current according to claim 3, characterized in that: The protective cover (11) is located at the upper part of the through groove (9). And the lower outer surface of the protective cover (11) is fixedly connected to the upper outer surface of the mounting block (4). The movable block (12) penetrates through the through groove (9). The outer wall of the movable block (12) is in sliding connection with the through groove (9).

5. An on-line monitoring device for arresters based on the principle of measuring resistive current according to claim 4, characterized in that: The number of the through holes (13), the guide rods (14) and the compression springs (15) is two groups each. The two groups of through holes (13) are opened on the left and right sides of the lower outer surface of the movable block (12). The two groups of guide rods (14) are fixedly installed on the left and right sides of the upper part of the inner cavity of the protective cover (11). And the lower ends of the guide rods (14) extend into the through holes (13). The compression spring (15) is movably sleeved on the outer wall of the guide rod (14). The lower outer surface of the compression spring (15) is fixedly connected to the upper outer surface of the movable block (12). The upper outer surface of the compression spring (15) is fixedly connected to the upper part of the inner cavity of the protective cover (11).

6. The on-line monitoring device for lightning arresters based on the principle of measuring resistive current according to claim 5, characterized in that: The outer wall of the movable block (12) is in sliding connection with the inner wall of the protective cover (11). The movable block (12) is slidably connected to the outer wall of the guide rod (14) through the through hole (13). The upper outer surface of the movable block (12) is elastically connected to the upper part of the inner cavity of the protective cover (11) through the compression spring (15).

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