10KV lightning arrester monitoring device
By installing monitoring devices at the bottom of the 10KV lightning arrester, including the upper cover, the middle ring, the lower cover and the current sensor, real-time monitoring of leakage current and the number of lightning strikes is achieved, solving the problem that traditional lightning arresters cannot be monitored remotely, and remote evaluation of the operating status and insulation level of electrical equipment is achieved.
Patent Information
- Application Number
- CN202422266429.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-14
AI Technical Summary
Because most traditional 10kV lightning arresters are directly grounded, they cannot know the leakage current and the number of lightning strikes, resulting in the inability to remotely monitor the operating conditions and insulation levels.
A 10KV lightning arrester monitoring device is designed, including the upper cover, the middle ring, the lower cover and the current sensor. The current sensor is set in the middle ring and is installed at the bottom of the lightning arrester through a threaded connection to realize real-time monitoring of leakage current and the number of lightning strikes, and is electrically connected to the monitoring and control circuit board to realize remote data reading.
It realizes online monitoring of 10KV lightning arresters, can remotely obtain leakage current and lightning strike data, judge operating conditions and insulation levels, and solves the problem that traditional lightning arresters cannot be monitored remotely.
Smart Images
Figure CN223123151U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lightning arresters, in particular to a 10KV lightning arrester monitoring device. Background Technique
[0002] A lightning arrester is an electrical appliance used to protect electrical equipment from high transient overvoltages and limit the follow - current time and often the follow - current amplitude. A lightning arrester is an important and indispensable device in the power system. When the power grid is attacked by atmospheric overvoltage or internal overvoltage, the lightning arrester acts instantaneously and conducts to the ground, and the insulation resumes after releasing the overvoltage energy, thus protecting the power grid from overvoltage damage.
[0003] However, for the lightning arresters in the distribution network (mainly 10kV voltage level in our country), the vast majority are directly grounded, that is, the lightning arrester base is connected to the grounding channel steel or the cross arm of the pole. Therefore, during operation, the leakage current of the 10kV lightning arrester cannot be known. And for the defects such as insulation moisture absorption, cracking and surface dirt of this equipment, the change of the leakage current value is the most obvious. Therefore, the traditional 10KV lightning arrester does not have the functions of monitoring leakage current and lightning strike times, cannot remotely read the current leakage current of the lightning arrester to the ground, cannot judge its operation status and insulation level based on this, and further cannot remotely know the operation situation of electrical equipment. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is that for the traditional 10kV lightning arrester, due to the vast majority of it being directly grounded, the leakage current of the 10kV lightning arrester cannot be known during operation, so that the traditional 10KV lightning arrester does not have the functions of monitoring leakage current and lightning strike times, cannot remotely read the current leakage current of the lightning arrester to the ground, cannot judge its operation status and insulation level based on this, and further cannot remotely know the operation situation of electrical equipment. The utility model provides a 10KV lightning arrester monitoring device.
[0005] To achieve the above object, the utility model provides the following technical solutions:
[0006] A 10KV lightning arrester monitoring device is provided. The monitoring device is thread - connected to the bottom of the 10KV lightning arrester. The monitoring device includes an upper cover, a middle ring, a lower cover and a current sensor. The current sensor is arranged in the middle ring. The upper cover and the lower cover are respectively arranged at the top and bottom of the middle ring. The current sensor includes a first pressing piece, a current - guiding piece and a second pressing piece. The current - guiding piece is located between the first pressing piece and the second pressing piece. The first pressing piece contacts the bottom of the upper cover, and the second pressing piece contacts the bottom of the lower cover. A square groove for installing a monitoring control circuit board is arranged on the outer side wall of the middle ring. The first pressing piece and the second pressing piece are respectively electrically connected to the monitoring control circuit board.
[0007] Further, the upper cover is provided with a first connecting screw rod that is threadedly connected to the 10KV lightning arrester, and the lower cover is provided with a second connecting screw rod that is threadedly connected to the mounting bracket.
[0008] Further, the middle ring includes an outer ring and an inner ring disposed within the outer ring and spaced apart from the outer ring. A plurality of connecting plates and a plurality of bolts are spaced apart between the outer ring and the inner ring.
[0009] Further, a first annular baffle is provided at the top of the middle ring between the outer ring and the inner ring, and a second annular baffle is provided at the bottom of the middle ring between the outer ring and the inner ring. The upper cover and the first annular baffle are respectively provided with a first screw hole and a second screw hole corresponding to the bolt. The upper cover and the first annular baffle are detachably fixed to the top of the middle ring through the cooperation of screws, the first screw hole, the second screw hole, and the bolt.
[0010] Further, the lower cover and the second annular baffle are respectively provided with a third screw hole and a fourth screw hole corresponding to the bolt. The lower cover and the second annular baffle are detachably fixed to the bottom of the middle ring through the cooperation of screws, the third screw hole, the fourth screw hole, and the bolt.
[0011] Further, one side of the square groove away from the middle ring is open, and a potting glue layer is formed by potting in the square groove.
[0012] Further, a plurality of sequentially arranged elastic pieces and a plurality of avoidance holes respectively adapted to the elastic pieces are annularly arranged on the side of the first pressing piece opposite to the upper cover and the side of the second pressing piece opposite to the lower cover.
[0013] The 10KV lightning arrester monitoring device provided by the above embodiment of the utility model is threadedly connected to the bottom of the 10KV lightning arrester. The monitoring device includes an upper cover, a middle ring, a lower cover and a current sensor. The current sensor is arranged inside the middle ring. The upper cover and the lower cover are respectively arranged at the top end and the bottom end of the middle ring. The current sensor includes a first pressing piece, a current guiding piece and a second pressing piece. The current guiding piece is located between the first pressing piece and the second pressing piece. The first pressing piece contacts the bottom of the upper cover, and the second pressing piece contacts the bottom of the lower cover. A square groove for installing a monitoring control circuit board is provided on the outer side wall of the middle ring. The first pressing piece and the second pressing piece are respectively electrically connected to the monitoring control circuit board. In this way, the 10KV lightning arrester is grounded through the monitoring device. When the 10KV lightning arrester operates in parallel in the power grid, as an on-line monitoring device, the monitoring device can read data such as the leakage current to the ground and the number of lightning strikes of the 10KV lightning arrester through the current sensor, so as to judge its operating condition and insulation level, realize the monitoring function of data such as the leakage current and the number of lightning strikes of the 10KV lightning arrester, and judge its operating condition and insulation level accordingly, and then remotely know the operating condition of the electrical equipment, effectively solving the problem that the traditional 10kV lightning arrester, due to the vast majority of it being directly grounded, cannot obtain the leakage current of the 10kV lightning arrester during operation, so that the traditional 10KV lightning arrester does not have the functions of monitoring the leakage current and the number of lightning strikes, cannot remotely read the current leakage current of the lightning arrester to the ground, cannot judge its operating condition and insulation level accordingly, and thus cannot remotely know the operating condition of the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0015] Figure 1 is a schematic structural diagram of the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0016] Figure 2 is another schematic structural diagram of the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0017] Figure 3 is a schematic structural diagram of the monitoring device of the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0018] Figure 4 is another schematic structural diagram of the monitoring device of the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0019] Figure 5 It is a schematic structural diagram of the current sensor in the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0020] Figure 6 It is a schematic structural diagram among the current sensor, the upper cover and the lower cover in the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0021] Figure 7 It is another schematic structural diagram among the current sensor, the upper cover and the lower cover in the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0022] Figure 8 It is an explosion diagram of the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0023] Figure 9 It is Figure 8 The enlarged schematic diagram at position A in
[0024] Figure 10 It is another explosion diagram of the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0025] Figure 11 It is a schematic structural diagram of the first pressing piece of the current sensor in the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model;
[0026] Figure 12 It is a schematic structural diagram of the second pressing piece of the current sensor in the 10KV lightning arrester monitoring device provided in the embodiment of the present utility model.
[0027] Explanation of the reference numerals in the drawings:
[0028] 10. Monitoring device; 20. 10KV lightning arrester; 11. Upper cover; 12. Middle ring; 13. Lower cover; 14. Current sensor; 15. Square groove; 16. First annular baffle; 17. First annular baffle; 141. First pressing piece; 142. Current guiding piece; 143. Second pressing piece; 111. First connecting screw; 131. Second connecting screw; 121. Outer ring; 122. Inner ring; 123. Connecting plate 123; 124. Bolt; 112. First screw hole; 161. Second screw hole; 132. Third screw hole 1; 171. Fourth screw hole; 144. Elastic piece; 145. Avoidance hole. Detailed implementation manners
[0029] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.
[0032] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0033] In the present utility model, unless otherwise clearly stipulated and defined, the first feature being “above” or “below” the second feature may include the direct contact between the first and second features, or may include the case where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being “above”, “over” and “on top of” the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being “under”, “beneath” and “underneath” the second feature includes that the first feature is directly under and obliquely under the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0034] Please refer to Figures 1 to 12, a 10KV lightning arrester monitoring device provided by an embodiment of the present utility model. The monitoring device 10 is threadedly connected to the bottom of the 10KV lightning arrester 20. The monitoring device 10 includes an upper cover 11, a middle ring 12, a lower cover 13 and a current sensor 14. The current sensor 14 is arranged inside the middle ring 12. The upper cover 11 and the lower cover 13 are respectively arranged at the top end and the bottom end of the middle ring 12. Both the upper cover 11 and the lower cover 13 are made of aluminum alloy. The current sensor 14 includes a first pressing piece 141, a current guiding piece 142 and a second pressing piece 143. The first pressing piece 141, the current guiding piece 142 and the second pressing piece 143 are all made of aluminum alloy. The current guiding piece 142 is located between the first pressing piece 141 and the second pressing piece 143, and the current guiding piece 142 is respectively in contact with the first pressing piece 141 and the second pressing piece 143. In this way, the first pressing piece 141, the current guiding piece 142 and the second pressing piece 143 are in a contact conduction state. The first pressing piece 141 is in contact with the bottom of the upper cover 11, and the first pressing piece 141 and the upper cover 11 are in a contact conduction state. The second pressing piece 143 is in contact with the bottom of the lower cover 13, and the second pressing piece 143 and the lower cover 13 are in a contact conduction state. In this way, when the power grid is attacked by atmospheric overvoltage or internal overvoltage, the 10KV lightning arrester 20 instantaneously acts and conducts to the ground. After releasing the overvoltage energy, the insulation is restored again. And through the current sensor 14, data such as the leakage current of the 10KV lightning arrester to the ground and the number of lightning strikes can be read. A square groove 15 for installing a monitoring control circuit board (not marked in the figure) is provided on the outer side wall of the middle ring 12. The first pressing piece 141 and the second pressing piece 143 are respectively electrically connected to the monitoring control circuit board. The data such as the leakage current of the 10KV lightning arrester to the ground and the number of lightning strikes read by the current sensor 14 can achieve a remote monitoring effect through the monitoring control circuit board. In this way, through the setting of the monitoring device 10 and combining the monitoring device 10 with the 10KV lightning arrester, and the current sensor 14 is arranged inside the monitoring device 10. The current sensor 14 includes a first pressing piece 141, a current guiding piece 142 and a second pressing piece 143. The first pressing piece 141 and the second pressing piece 143 are respectively electrically connected to the monitoring control circuit board. In this way, the 10KV lightning arrester 20 is grounded through the monitoring device 10. When the 10KV lightning arrester operates in parallel in the power grid, the monitoring device 10 is used as an on-line monitoring device. Through the current sensor 14, data such as the leakage current of the 10KV lightning arrester to the ground and the number of lightning strikes can be read, so as to judge its operating condition and insulation level, realize the monitoring function of data such as the leakage current and the number of lightning strikes of the 10KV lightning arrester, and judge its operating condition and insulation level, and further remotely know the operating condition of the electrical equipment.
[0035] In this embodiment, the upper cover 11 is provided with a first connecting screw 111 that is threadedly connected to the 10 kV lightning arrester 20, and the lower cover 13 is provided with a second connecting screw 131 that is threadedly connected to the mounting bracket, which facilitates installation and disassembly.
[0036] As Figure 8 and Figure 9 shown, in this embodiment, the middle ring 12 includes an outer ring 121 and an inner ring 122 disposed within the outer ring 121 and spaced apart from the outer ring 121. A plurality of connecting plates 123 and a plurality of bolts 124 are spaced between the outer ring 121 and the inner ring 122, which can increase the firmness of the middle ring 12 and reduce the weight of the middle ring 12, facilitating installation.
[0037] As Figure 8 and Figure 10 shown, in this embodiment, a first annular baffle 16 is provided at the top of the middle ring 12 between the outer ring 121 and the inner ring 122, and a second annular baffle 17 is provided at the bottom of the middle ring 12 between the outer ring 121 and the inner ring 122. First screw holes 112 and second screw holes 161 are respectively provided at positions corresponding to the bolts 124 on the upper cover 11 and the first annular baffle 16. The upper cover 11 and the first annular baffle 16 are detachably fixed to the top of the middle ring 12 through the cooperation of screws, the first screw holes 112, the second screw holes 161, and the bolts 124, facilitating installation.
[0038] As Figure 8 and Figure 10 shown, in this embodiment, third screw holes 132 and fourth screw holes 171 are respectively provided at positions corresponding to the bolts 125 on the lower cover 13 and the second annular baffle 17. The lower cover 13 and the second annular baffle 17 are detachably fixed to the bottom of the middle ring 12 through the cooperation of screws, the third screw holes 132, the fourth screw holes 171, and the bolts 124, facilitating installation.
[0039] In this embodiment, one side of the square groove 121 away from the middle ring 12 is open, and a potting glue layer (not marked in the figure) is formed by potting in the square groove 121 to meet the IP68 protection requirements.
[0040] As Figure 6 、 Figure 7 、 Figure 11 and Figure 12As shown, in this embodiment, on the side of the first pressing sheet 141 facing the upper cover 11 and on the side of the second pressing sheet 143 facing the lower cover 13, a plurality of sequentially arranged elastic sheets 144 and a plurality of avoidance holes 145 respectively adapted to the elastic sheets are provided in a ring shape. Through the arrangement of the elastic sheets 144, it is better to make the first pressing sheet 141 in contact conduction with the upper cover 11 and the second pressing sheet 143 in contact conduction with the lower cover 13, facilitating the current sensor 14 to read data such as the leakage current of the 10KV lightning arrester to the ground and the number of lightning strikes.
[0041] For the 10KV lightning arrester monitoring device provided in the above embodiment of the present utility model, the monitoring device is threadedly connected to the bottom of the 10KV lightning arrester. The monitoring device includes an upper cover, a middle ring, a lower cover and a current sensor. The current sensor is arranged inside the middle ring. The upper cover and the lower cover are respectively arranged at the top end and the bottom end of the middle ring. The current sensor includes a first pressing sheet, a current guiding sheet and a second pressing sheet. The current guiding sheet is located between the first pressing sheet and the second pressing sheet. The first pressing sheet is in contact with the bottom of the upper cover, and the second pressing sheet is in contact with the bottom of the lower cover. A square groove for installing a monitoring and control circuit board is provided on the outer side wall of the middle ring. The first pressing sheet and the second pressing sheet are respectively electrically connected to the monitoring and control circuit board. In this way, the 10KV lightning arrester is grounded through the monitoring device. When the 10KV lightning arrester operates in parallel in the power grid, as an on-line monitoring device, the monitoring device can read data such as the leakage current of the 10KV lightning arrester to the ground and the number of lightning strikes through the current sensor, so as to judge its operating condition and insulation level, realize the monitoring function of data such as the leakage current and the number of lightning strikes of the 10KV lightning arrester, and judge its operating condition and insulation level accordingly, and then remotely know the operating condition of the electrical equipment. This effectively solves the problem that for traditional 10kV lightning arresters, since the vast majority are directly grounded, the leakage current of the 10kV lightning arrester cannot be known during operation, so that the traditional 10KV lightning arrester does not have the functions of monitoring the leakage current and the number of lightning strikes, cannot remotely read the current leakage current of the current lightning arrester to the ground, cannot judge its operating condition and insulation level accordingly, and thus cannot remotely know the operating condition of the electrical equipment.
[0042] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. A 10KV lightning arrester monitoring device, characterized in that, The monitoring device is threadedly connected to the bottom of the 10 kV lightning arrester. The monitoring device includes an upper cover, a middle ring, a lower cover and a current sensor. The current sensor is arranged inside the middle ring. The upper cover and the lower cover are respectively arranged at the top end and the bottom end of the middle ring. The current sensor includes a first pressing piece, a current guiding piece and a second pressing piece. The current guiding piece is located between the first pressing piece and the second pressing piece. The first pressing piece contacts the bottom of the upper cover, and the second pressing piece contacts the bottom of the lower cover. A square groove for installing a monitoring control circuit board is arranged on the outer side wall of the middle ring. The first pressing piece and the second pressing piece are respectively electrically connected to the monitoring control circuit board.
2. The 10KV lightning arrester monitoring device according to claim 1, characterized in that, The upper cover is provided with a first connecting screw rod threadedly connected to the 10 kV lightning arrester, and the lower cover is provided with a second connecting screw rod threadedly connected to the mounting bracket.
3. The 10KV lightning arrester monitoring device according to claim 1, characterized in that, The middle ring includes an outer ring and an inner ring arranged inside the outer ring and spaced from the outer ring. A plurality of connecting plates and a plurality of bolts are arranged at intervals between the outer ring and the inner ring.
4. The 10KV lightning arrester monitoring device according to claim 3, characterized in that A first annular baffle is arranged at the top end of the middle ring between the outer ring and the inner ring, and a second annular baffle is arranged at the bottom end of the middle ring between the outer ring and the inner ring. First screw holes and second screw holes are respectively arranged at positions corresponding to the bolts on the upper cover and the first annular baffle. The upper cover and the first annular baffle are detachably fixed to the top end of the middle ring through the cooperation of screws, the first screw holes, the second screw holes and the bolts.
5. The 10KV lightning arrester monitoring device according to claim 4, characterized in that Third screw holes and fourth screw holes are respectively arranged at positions corresponding to the bolts on the lower cover and the second annular baffle. The lower cover and the second annular baffle are detachably fixed to the bottom end of the middle ring through the cooperation of screws, the third screw holes, the fourth screw holes and the bolts.
6. The 10KV lightning arrester monitoring device according to claim 1, characterized in that, One side of the square groove away from the middle ring is open, and a potting glue layer is formed by potting in the square groove.
7. The 10KV lightning arrester monitoring device according to claim 1, characterized in that, A plurality of sequentially arranged elastic pieces and a plurality of avoiding holes respectively adapted to the elastic pieces are annularly arranged on the side of the first pressing piece opposite to the upper cover and the side of the second pressing piece opposite to the lower cover.