A current monitoring device for surge arrester resistor elements in extremely cold environments

Abstract

This utility model discloses a current monitoring device for surge arrester resistor elements in extremely cold environments, belonging to the field of surge arrester resistor elements. It includes an extreme cold insulation component and a lifting component. The extreme cold insulation component includes a chassis, with a resistor element current detector detachably mounted on the upper end of the chassis. A resistor element current meter is installed inside the upper end of the resistor element current detector, and an insulation sleeve is fitted onto the side surface of the resistor element current meter. A protective sleeve is detachably mounted on the upper end of the chassis. The lifting component includes several hinge blocks mounted on the side surface of the chassis. This utility model, through the combination of the extreme cold insulation component and the lifting component, not only facilitates current detection of the surge arrester resistor elements but also enables the monitoring device to operate normally in extremely cold environments, thereby improving the ease of use of the current monitoring device. Furthermore, the coordinated structure allows for easy adjustment of the height of the current monitoring device as needed, further enhancing usability.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester resistor elements, specifically a current monitoring device for surge arrester resistor elements in extremely cold environments. Background Technology

[0002] Surge arrester resistors, especially zinc oxide resistors, are key components of surge arresters, primarily used to limit overvoltages and protect power equipment from damage caused by lightning or switching overvoltages. Surge arrester resistors are typically composed of zinc oxide and a small amount of additives. These additives improve the electrical and mechanical properties of the resistors, enhancing their stability and reliability. Zinc oxide resistors are non-linear, meaning that under normal operating voltage, their resistance is very high, essentially acting as an insulator; however, under overvoltage, their resistance rapidly decreases, effectively limiting the overvoltage. Due to the complex operating environment of surge arrester resistors, often used in extremely cold conditions, current monitoring devices are required to prevent leakage damage. The "Surge Arrester Life Monitoring Device" disclosed in application number "201920833457.9" represents an increasingly mature technology. Its "In this invention, a detection resistor is connected in series on the grounding wire of the zinc oxide resistor valve of the surge arrester, and a current acquisition module monitors the current flowing through the detection resistor in real time." The current sensor monitors the real-time temperature of the detection resistor, and the current sensor transmits the real-time current value to the server via a communication module, prompting the server to issue an alarm signal. Furthermore, when the small leakage current value increases in the arrester's non-discharge state, the arrester's operational reliability decreases. In addition, the arrester life monitoring device monitors the arrester's status, providing a reference for recent maintenance and maintenance frequency. However, this current monitoring device has the following shortcomings: while it effectively monitors the resistor using a zinc oxide resistance valve and temperature sensor, its simple structure makes its insulation and protection effects insufficient in extremely cold environments. Therefore, it is necessary to provide a current monitoring device that is easy to use in extremely cold environments and improves operational safety. Furthermore, the current monitoring device is not easily height-adjustable; therefore, it is necessary to provide a current monitoring device that is height-adjustable and improves ease of use. Utility Model Content

[0003] This invention provides a current monitoring device for surge arrester resistor elements in extremely cold environments, aiming to solve the problem that existing current monitoring devices are inconvenient for current detection of surge arrester resistor elements in extremely cold environments.

[0004] To achieve the above objectives, this utility model provides a current monitoring device for surge arrester resistor elements in extremely cold environments, including an extreme cold insulation component and a lifting component.

[0005] The extreme cold insulation component includes a chassis, a resistor current detector detachably mounted on the upper end of the chassis, a resistor current meter installed inside the upper end of the resistor current detector, an insulation sleeve fitted on the side surface of the resistor current meter, a protective sleeve detachably mounted on the upper end of the chassis, a heating wire installed inside the protective sleeve, a transparent top cover detachably mounted on the upper end of the protective sleeve, and a positioning ring fixedly connected to the lower end of the transparent top cover.

[0006] The lifting assembly includes several hinge blocks mounted on the side surface of the chassis. Each hinge block has an octagonal hole on its surface. An octagonal shaft is rotatably connected inside the octagonal hole. A diagonal support leg is fixedly connected to the lower end of the octagonal shaft. A stabilizing plate is hinged to the lower end of the diagonal support leg. An electric telescopic shaft is detachably mounted on the lower end of the chassis.

[0007] As a preferred embodiment of this utility model, the upper end of the chassis is provided with several arc-shaped grooves, and the lower end of the protective sleeve is fixedly connected with several arc-shaped pieces, all of which are engaged inside the arc-shaped grooves.

[0008] As a preferred embodiment of this utility model, the upper end of the chassis is provided with a plurality of screw holes, and the side surface of the protective sleeve is fixedly connected with a plurality of first lugs, and the interior of the plurality of first lugs and the screw holes are all threaded with first bolts.

[0009] As a preferred embodiment of this utility model, the upper end of the protective sleeve is fixedly connected to both sides with second bolts, and the transparent top cover is fixedly connected to both sides with second lugs. The second bolts are inserted into the interior of the second lugs, and the side surface of the second bolts is threaded with second nuts.

[0010] As a preferred embodiment of this utility model, the inner wall of the heat insulation sleeve is provided with several strip grooves, and several locking strips are fixedly connected to the side surface of the resistance sheet power meter, and the several locking strips are all locked inside the strip grooves.

[0011] As a preferred embodiment of this utility model, a limiting groove is provided at the upper end of the chassis, and a limiting block is fixedly connected to the lower end of the resistance sheet power meter, with the limiting block being engaged inside the limiting groove.

[0012] As a preferred embodiment of this utility model, the lower end of the chassis is fixedly connected to a plug shaft, and the upper end of the electric telescopic shaft is provided with a plug hole, and the plug shaft is inserted into the plug hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. When detecting the current of the surge arrester resistor element, the resistor element is first connected to the resistor element through a resistor element current detector. At this time, the leakage current through the surge arrester under the operating voltage can be monitored by the resistor element current meter, and it can also be determined whether the resistor element is damp. Finally, the results are presented by the resistor element current meter. At the same time, the presence of the protective sleeve, together with the transparent top cover and the positioning ring, not only provides positioning protection for the resistor element current detector from the top, but also the heat dissipation of the internal heating wire can keep the resistor element current detector warm. The presence of the heat insulation sleeve can further enhance the heat insulation effect. Compared with the current monitoring device in the existing technology "A surge arrester life monitoring device", this utility model, through the above-mentioned structure, not only facilitates the current monitoring operation of the surge arrester resistor element, but also facilitates its use in extremely cold environments, thereby improving the safety of the current monitoring device.

[0015] 2. When adjusting the height of the current monitoring device, it is only necessary to control the extension and retraction of the electric telescopic shaft, thereby controlling the lifting and lowering of the chassis. At the same time, the octagonal shaft is controlled to rotate around the octagonal hole, thereby adjusting the angle of several inclined support legs and improving the support stability of the chassis. Compared with the monitoring device in the existing technology "a surge arrester life monitoring device", this utility model, through the cooperation of the above structures, can facilitate the adjustment of the height of the current monitoring device as needed, thereby improving the ease of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the chassis structure of this utility model;

[0018] Figure 3 This is a structural disassembly diagram of the extreme cold insulation component of this utility model;

[0019] Figure 4 This is a disassembled diagram of the current monitoring structure of this utility model;

[0020] Figure 5 This is an anatomical diagram of the chassis structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the resistive current detector structure of this utility model;

[0022] Figure 7 This is a bottom view of the chassis structure of this utility model;

[0023] Figure 8 This is a structural disassembly diagram of the lifting component of this utility model.

[0024] In the diagram: 100, Extreme cold insulation component; 101, chassis; 102, resistance element current detector; 103, resistance element power meter; 104, insulation sleeve; 105, protective sleeve; 106, heating wire; 107, transparent top cover; 108, positioning ring; 111, arc groove; 112, arc plate; 121, screw hole; 122, first lug; 123, first bolt; 131, second bolt; 132, second lug; 133, second nut; 141, strip groove; 142, retaining strip; 151, limiting groove; 152, limiting block; 200, lifting component; 201, hinge block; 202, octagonal hole; 203, octagonal shaft; 204, diagonal support leg; 205, stabilizing plate; 206, electric telescopic shaft; 211, plug-in shaft; 212, plug-in hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figures 1-8 This utility model provides a current monitoring device for surge arrester resistors in extremely cold environments, including an extremely cold insulation component 100 and a lifting component 200.

[0028] The extreme cold insulation component 100 includes a chassis 101. A resistance current detector 102 is detachably installed on the upper end of the chassis 101. A resistance current meter 103 is installed inside the upper end of the resistance current detector 102. An insulation sleeve 104 is fitted on the side surface of the resistance current meter 103. A protective sleeve 105 is detachably installed on the upper end of the chassis 101. A heating wire 106 is installed inside the protective sleeve 105. A transparent top cover 107 is detachably installed on the upper end of the protective sleeve 105. A positioning ring 108 is fixedly connected to the lower end of the transparent top cover 107.

[0029] The lifting assembly 200 includes several hinge blocks 201 mounted on the side surface of the chassis 101. Each hinge block 201 has an octagonal hole 202 on its surface. An octagonal shaft 203 is rotatably connected inside the octagonal hole 202. A diagonal support leg 204 is fixedly connected to the lower end of the octagonal shaft 203. A stabilizing plate 205 is hinged to the lower end of the diagonal support leg 204. An electric telescopic shaft 206 is detachably installed at the lower end of the chassis 101.

[0030] In one specific embodiment, the combination of the extreme cold insulation component 100 and the lifting component 200 not only facilitates current detection of the surge arrester resistor element but also enables the monitoring device to operate normally in extremely cold environments, thereby improving the ease of use of the current monitoring device. Furthermore, the coordinated structure allows for easy adjustment of the height of the current monitoring device as needed, further enhancing usability. During use, simply controlling the extension and retraction of the electric telescopic shaft 206 controls the lifting and lowering of the chassis 101. Simultaneously, controlling the rotation of the octagonal shaft 203 around the octagonal hole 202 allows for adjustment of the angles of the several inclined support legs 204, thereby improving the support stability of the chassis 101. This is particularly useful when detecting the surge arrester resistor element. The resistor current detector 102 is connected to the resistor. The resistor current meter 103 can monitor the leakage current through the surge arrester under the operating voltage and determine whether the resistor is damp. The results are presented by the resistor current meter 103. The insulation sleeve 104 is fitted on the side surface of the resistor current detector 102 to provide initial insulation. At the same time, the presence of the protective sleeve 105, together with the transparent top cover 107 and the positioning ring 108 at its lower end, not only provides positioning protection for the resistor current detector 102 from the top, but also the heat dissipated by the internal heating wire 106 can provide insulation for the resistor current detector 102, so that it can work normally in extremely cold environments, thereby improving the safety of the current monitoring device.

[0031] Please see Figure 2 and Figure 3 The upper end of the chassis 101 is provided with several arc-shaped grooves 111, and the lower end of the protective sleeve 105 is fixedly connected with several arc-shaped pieces 112, which are all engaged inside the arc-shaped grooves 111.

[0032] In one specific embodiment, the arc-shaped piece 112 is snapped into the arc-shaped groove 111, thereby improving the ease of disassembly and assembly between the chassis 101 and the protective sleeve 105.

[0033] Please see Figure 2 and Figure 3 The upper end of the chassis 101 is provided with several screw holes 121, and several first lugs 122 are fixedly connected to the side surface of the protective sleeve 105. The first lugs 122 and the screw holes 121 are all threaded with first bolts 123.

[0034] In one specific embodiment, the first bolt 123 is threaded inside the first lug 122, which can enhance the connection strength between the chassis 101 and the protective sleeve 105. At the same time, the protective sleeve 105 can be disassembled by removing the first bolt 123.

[0035] Please see Figure 2 and Figure 3 The upper end of the protective sleeve 105 is fixedly connected to the two sides of the second bolt 131, and the transparent top cover 107 is fixedly connected to the two sides of the second ear block 132. The second bolt 131 is inserted into the interior of the second ear block 132, and the side surface of the second bolt 131 is threaded with the second nut 133.

[0036] In one specific embodiment, the second bolt 131 is threaded inside the second lug 132, and together with the second nut 133, it can enhance the limiting protection effect on the resistor current detector 102.

[0037] Please see Figure 4 The inner wall of the insulation sleeve 104 is provided with several strip grooves 141, and several clips 142 are fixedly connected to the side surface of the resistance meter 103, and the clips 142 are all engaged inside the strip grooves 141.

[0038] In one specific embodiment, the clip 142 is snapped into the inside of the strip groove 141, thereby improving the connection stability and ease of disassembly and replacement between the insulation sleeve 104 and the resistor current detector 102.

[0039] Please see Figure 2 and Figure 6 A limiting groove 151 is provided at the upper end of the chassis 101, and a limiting block 152 is fixedly connected to the lower end of the resistor meter 103. The limiting block 152 is snapped into the inside of the limiting groove 151.

[0040] In one specific embodiment, the limiting block 152 is snapped into the limiting groove 151, which can improve the stability of the resistor current detector 102 when it is installed on the upper end of the chassis 101. After the limiting block 152 is removed, the resistor current detector 102 can be disassembled.

[0041] Please see Figure 2 and Figure 7 The lower end of the chassis 101 is fixedly connected to a plug shaft 211, and the upper end of the electric telescopic shaft 206 is provided with a plug hole 212, and the plug shaft 211 is inserted into the plug hole 212.

[0042] In one specific embodiment, the insertion shaft 211 is inserted into the insertion hole 212, which facilitates the quick assembly and disassembly of the electric telescopic shaft 206 and the chassis 101.

[0043] Working principle: In use, the electric telescopic shaft 206 is first controlled to extend and retract, thereby controlling the lifting and lowering of the chassis 101. At the same time, the octagonal shaft 203 is controlled to rotate around the octagonal hole 202 to adjust the angle of several inclined support legs 204, thereby improving the support stability of the chassis 101. When detecting the surge arrester resistor, the resistor current detector 102 is connected to the resistor. The leakage current through the surge arrester under the operating voltage can be monitored by the resistor current meter 103. At the same time, it can be determined whether the inside of the resistor is damp, which is also presented by the resistor current meter 103. The heat insulation sleeve 104 is fitted on the side surface of the resistor current detector 102, thereby providing a preliminary heat insulation effect. The presence of the protective sleeve 105, together with the transparent top cover 107 and the positioning ring 108 at its lower end, not only provides positioning protection for the resistor current detector 102 from the top, but also the heat dissipated by the internal heating wire 106 can provide a heat insulation effect for the resistor current detector 102, thereby enabling it to work normally in extremely cold environments and improving the safety of the current monitoring device.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A current monitoring device for the resistor element of a surge arrester in extremely cold environments, characterized in that, include: An extreme cold insulation component (100) includes a chassis (101), a resistor current detector (102) is detachably installed on the upper end of the chassis (101), a resistor current meter (103) is installed inside the upper end of the resistor current detector (102), an insulation sleeve (104) is sleeved on the side surface of the resistor current meter (103), a protective sleeve (105) is detachably installed on the upper end of the chassis (101), a heating wire (106) is provided inside the protective sleeve (105), a transparent top cover (107) is detachably installed on the upper end of the protective sleeve (105), and a positioning ring (108) is fixedly connected to the lower end of the transparent top cover (107). The lifting assembly (200) includes a plurality of hinge blocks (201) mounted on the side surface of the chassis (101). Each of the hinge blocks (201) has an octagonal hole (202) on its surface. An octagonal shaft (203) is rotatably connected inside the octagonal hole (202). A diagonal support leg (204) is fixedly connected to the lower end of the octagonal shaft (203). A stabilizing plate (205) is hinged to the lower end of the diagonal support leg (204). An electric telescopic shaft (206) is detachably installed at the lower end of the chassis (101).

2. The current monitoring device for the resistor element of a surge arrester in extremely cold environments according to claim 1, characterized in that: The upper end of the chassis (101) is provided with several arc-shaped grooves (111), and the lower end of the protective sleeve (105) is fixedly connected with several arc-shaped pieces (112), and the several arc-shaped pieces (112) are all engaged inside the arc-shaped grooves (111).

3. The current monitoring device for the resistor element of a surge arrester in extremely cold environments according to claim 1, characterized in that: The upper end of the chassis (101) is provided with a plurality of screw holes (121), and a plurality of first lugs (122) are fixedly connected to the side surface of the protective sleeve (105). The interior of the plurality of first lugs (122) and the screw holes (121) are all threaded with first bolts (123).

4. The current monitoring device for the resistor element of a surge arrester in extremely cold environments according to claim 1, characterized in that: The upper end of the protective sleeve (105) is fixedly connected to the two sides of the second bolt (131), and the transparent top cover (107) is fixedly connected to the two sides of the second ear block (132). The second bolt (131) is inserted into the interior of the second ear block (132), and the side surface of the second bolt (131) is threaded with the second nut (133).

5. The current monitoring device for the resistor element of a surge arrester in extremely cold environments according to claim 1, characterized in that: The inner wall of the insulation sleeve (104) is provided with several strip grooves (141), and several clips (142) are fixedly connected to the side surface of the resistance sheet meter (103), and several clips (142) are engaged inside the strip grooves (141).

6. The current monitoring device for the resistor element of a surge arrester in extremely cold environments according to claim 1, characterized in that: The upper end of the chassis (101) is provided with a limiting groove (151), and the lower end of the resistor meter (103) is fixedly connected to a limiting block (152), which is engaged inside the limiting groove (151).

7. The current monitoring device for the resistor element of a surge arrester in extremely cold environments according to claim 1, characterized in that: The lower end of the chassis (101) is fixedly connected to a plug shaft (211), and the upper end of the electric telescopic shaft (206) is provided with a plug hole (212), and the plug shaft (211) is inserted into the plug hole (212).

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