A detachable intelligent monitoring lightning arrester

Abstract

The present invention relates to a detachable intelligent monitoring arrester, comprising an arrester housing and a zinc oxide component arranged in the arrester housing, further comprising an intelligent monitoring bottom shell and an intelligent monitoring module, the intelligent monitoring module comprising a drainage transmission line, a current sensor, an intelligent monitoring circuit board and a signal line, the zinc oxide component being electrically connected to the current sensor via the drainage transmission line, the current sensor being connected to the intelligent monitoring circuit board, the signal line being connected to the intelligent monitoring circuit board and extending out of the intelligent monitoring bottom shell, the intelligent monitoring circuit board comprising a zinc oxide monitoring circuit, the zinc oxide monitoring circuit being used to analyze whether the zinc oxide component meets the requirements. By adding an intelligent monitoring bottom shell and an intelligent monitoring module arranged in the detection bottom shell to the arrester housing, information such as the number of lightning strikes of the arrester and the insulation of the zinc oxide can be monitored and saved in real time, and the information can be connected to an external device for reading via a signal line, thereby ensuring the safe and stable operation of the arrester.

Description

Technical Field

[0001] The present invention relates to the technical field of lightning arrester manufacturing, and in particular to a detachable intelligent monitoring lightning arrester. Background Art

[0002] Lightning arresters are important protective equipment for power systems. Today, metal zinc oxide lightning arresters are widely used. Nonlinear resistors are one of their important components. When low voltage is applied to both ends of the lightning arrester, the resistance is large. As a voltage-limiting element, it absorbs the energy of surge voltage or pulse voltage. When high voltage is applied, the resistance is small, and the high-voltage impact current is directed to the ground, thereby limiting the voltage amplitude and protecting the insulation of electrical equipment.

[0003] When a lightning arrester is used and has been struck by lightning many times, the insulation of the zinc oxide in the arrester will gradually decrease until the insulation of the zinc oxide does not meet the requirements and the arrester is scrapped. Therefore, constant monitoring of the number of lightning strikes and the insulation of the zinc oxide are two important indicators for monitoring the arrester.

[0004] Existing arresters primarily record the number of lightning strikes using mechanical meters, which are typically manually read during regular inspections. This lack of information allows for analysis of whether the zinc oxide's insulation properties meet requirements. This incomplete information also increases the workload for manual inspections. Summary of the Invention

[0005] In view of the deficiencies in the background technology, the present invention provides a detachable intelligent monitoring lightning arrester.

[0006] The technical solution adopted by the present invention is: a detachable intelligent monitoring lightning arrester, including a lightning arrester shell and a zinc oxide component arranged in the lightning arrester shell, and also including an intelligent monitoring bottom shell and an intelligent monitoring module. The intelligent monitoring module includes a drainage transmission line, a current sensor, an intelligent monitoring circuit board and a signal line. The zinc oxide component is electrically connected to the current sensor through the above-mentioned drainage transmission line, the current sensor is connected to the intelligent monitoring circuit board, the signal line is connected to the intelligent monitoring circuit board and extends out of the intelligent monitoring bottom shell, the intelligent monitoring circuit board includes a zinc oxide monitoring circuit, and the zinc oxide monitoring circuit is used to analyze whether the zinc oxide component meets the requirements.

[0007] Furthermore, the intelligent monitoring bottom shell includes a shell body, a plastic shell upper cover, a plastic shell lower cover and an iron inner shell arranged in the shell body.

[0008] Furthermore, "L"-shaped connecting grooves are provided on both sides of the upper end of the shell body, and the plastic shell upper cover is connected to the "L"-shaped connecting grooves of the shell body through connecting bolts on both sides of the plastic shell upper cover.

[0009] Furthermore, the lower end of the arrester housing is detachably connected to the intelligent monitoring bottom shell via a screw.

[0010] Furthermore, the zinc oxide assembly includes nylon plastic coating, an upper connecting piece, a lower connecting piece and several zinc oxide sheets, the several zinc oxide sheets are stacked and coated in the nylon plastic coating, the upper connecting piece and the lower connecting piece are arranged at both ends of the zinc oxide sheet, and the upper connecting piece and the lower connecting piece are both provided with a first internal screw hole.

[0011] Furthermore, an upper connecting cover, a copper sheet and a second zinc oxide resistor are sequentially provided in the cavity of the upper cover of the plastic shell from top to bottom. A connecting section is extended from the upper end of the upper connecting cover. The connecting section is provided with a second internal screw hole that cooperates with the above-mentioned screw thread. The lower connecting piece is threadedly connected to the connecting section through the above-mentioned screw.

[0012] Furthermore, an iron base connected to the cross arm is provided at the bottom of the intelligent monitoring bottom shell, the iron base is connected to the lower cover of the plastic shell by bolts, the iron base is electrically connected to the zinc oxide resistor through the iron inner shell, and the lower end of the drainage transmission line passes through the current sensor and is connected to the iron base.

[0013] Furthermore, the intelligent monitoring circuit board includes a communication module, a lightning monitoring circuit and an MCU, and the lightning monitoring circuit is used to monitor and record the number of lightning strikes.

[0014] Furthermore, the zinc oxide monitoring circuit includes a transformer CT 1, a sampling resistor R12, an RC filter circuit and a processing chip U4. The transformer CT 1 is connected to the drainage transmission line to sense the AC current signal and convert it into a voltage signal through the sampling resistor R12, and then transmit it to the processing chip U4 through the RC filter circuit.

[0015] Furthermore, the lightning monitoring circuit includes a transformer CT2, a sampling resistor R18, an RC filter circuit and a processing chip U5, and the transformer CT2 is connected to the drainage transmission line.

[0016] The beneficial effects of the present invention are:

[0017] 1. By adding an intelligent monitoring bottom shell to the arrester shell and an intelligent monitoring module set in the detection bottom shell, the number of lightning strikes of the arrester and the insulation properties of zinc oxide and other information can be monitored and saved in real time, and the information can be connected to external equipment through a signal line for reading, thereby ensuring the safe and stable operation of the arrester and reducing the workload of inspection staff.

[0018] 2. The intelligent monitoring bottom shell is detachably connected to the arrester body. When the arrester body is damaged, the arrester body or the intelligent monitoring bottom shell can be replaced separately, which reduces the cost of use, avoids unnecessary waste, and is convenient and practical.

[0019] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0020] The present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a cross-sectional schematic diagram of the present invention.

[0023] Figure 3 for Figure 2 Enlarged schematic diagram of point A in the middle.

[0024] Figure 4 This is the circuit diagram of the zinc oxide monitoring circuit.

[0025] Figure 5 This is the circuit diagram of the lightning monitoring circuit.

[0026] Figure 1-5 In: 1. Arrester shell; 2. Intelligent monitoring bottom shell; 3. Drainage transmission line; 4. Current sensor; 5. Intelligent monitoring circuit board; 6. Signal line; 7. Shell body; 8. Plastic shell upper cover; 9. Plastic shell lower cover; 10. Iron inner shell; 11. "L"-shaped connecting groove; 12. Connecting bolt; 13. Screw; 14. Nylon plastic coating; 15. Upper connecting piece; 16. Lower connecting piece; 17. Zinc oxide sheet; 18. First inner screw hole; 19. Upper connecting cover; 20. Copper sheet; 21. Second zinc oxide resistor; 22. Connecting section; 23. Second inner screw hole; 24. Iron base. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] The present invention provides a detachable intelligent monitoring lightning arrester.

[0030] In this embodiment, referring to Figure 1-5The detachable intelligent monitoring lightning arrester includes a lightning arrester shell 1 and a zinc oxide component arranged in the lightning arrester shell, and also includes an intelligent monitoring bottom shell 2 and an intelligent monitoring module. The intelligent monitoring module includes a drainage transmission line 3, a current sensor 4, an intelligent monitoring circuit board 5 and a signal line 6. The zinc oxide component is electrically connected to the current sensor through the above-mentioned drainage transmission line, the current sensor is connected to the intelligent monitoring circuit board, the signal line is connected to the intelligent monitoring circuit board and extends out of the intelligent monitoring bottom shell. The intelligent monitoring circuit board includes a zinc oxide monitoring circuit, which is used to analyze whether the zinc oxide component meets the requirements.

[0031] In the above technical solution, by adding an intelligent monitoring bottom shell and an intelligent monitoring module arranged in the detection bottom shell to the lightning arrester shell, it is possible to monitor and save information such as the number of lightning strikes of the lightning arrester and the insulation properties of zinc oxide in real time, and connect and read it with external equipment through a signal line, thereby ensuring the safe and stable operation of the lightning arrester and reducing the workload of inspection staff.

[0032] Among them, the signal line is used to connect with external devices, such as mobile phones, computers and other smart devices to read data on the number of lightning strikes and whether the zinc oxide is intact.

[0033] Specifically, the intelligent monitoring bottom shell includes a shell body 7, a plastic shell upper cover 8, a plastic shell lower cover 9 and an iron inner shell 10 arranged in the shell body; "L"-shaped connecting grooves 11 are provided on both sides of the upper end of the shell body, and the plastic shell upper cover is connected to the "L"-shaped connecting groove of the shell body through connecting bolts 12 on both sides of the plastic shell upper cover.

[0034] In the above technical solution, the shell body and the plastic shell upper cover are connected by an "L"-shaped connecting groove and connecting bolts, which makes disassembly and assembly convenient.

[0035] Specifically, the lower end of the arrester shell is detachably connected to the intelligent monitoring bottom shell through a screw 13; the zinc oxide assembly includes a nylon overmolding 14, an upper connecting piece 15, a lower connecting piece 16 and a plurality of zinc oxide sheets 17, and the plurality of zinc oxide sheets are stacked and overmolded in the nylon overmolding. The upper connecting piece and the lower connecting piece are arranged at both ends of the zinc oxide sheet, and the upper connecting piece and the lower connecting piece are both provided with a first internal screw hole 18; the cavity of the upper cover of the plastic shell is provided with an upper connecting cover 19, a copper sheet 20 and a second zinc oxide resistor sheet 21 from top to bottom, and a connecting section 22 is extended from the upper end of the upper connecting cover, and a second internal screw hole 23 is provided on the connecting section that cooperates with the above-mentioned screw thread, and the lower connecting piece is threadedly connected to the connecting section through the above-mentioned screw.

[0036] In the above technical solution, the intelligent monitoring bottom shell and the arrester body are detachably connected by screws. After the arrester body is damaged, the arrester body or the intelligent monitoring bottom shell can be replaced separately, which reduces the cost of use, avoids unnecessary waste, and is convenient and practical.

[0037] Specifically, an iron base 24 connected to a cross arm is provided at the bottom of the intelligent monitoring bottom shell. The iron base is connected to the lower cover of the plastic shell by bolts. The iron base is electrically connected to the zinc oxide resistor through the iron inner shell. The lower end of the drainage transmission line passes through the current sensor and is connected to the iron base.

[0038] In this technical solution, the zinc oxide assembly is connected sequentially via a screw, an upper connecting cover, a copper sheet, a second zinc oxide resistor, an iron inner shell, and an iron base, providing current diversion. One end of the diversion transmission line is welded to the copper sheet, connecting it to the zinc oxide assembly. The other end passes through the current sensor and connects to the iron base.

[0039] Specifically, the intelligent monitoring circuit board includes a communication module, a lightning monitoring circuit and an MCU, wherein the lightning monitoring circuit is used to monitor and record the number of lightning strikes. The communication module is used to communicate with external devices.

[0040] Specifically, the zinc oxide monitoring circuit includes a transformer CT 1, a sampling resistor R12, an RC filter circuit and a processing chip U4. The transformer CT 1 is connected to the drainage transmission line to sense the AC current signal and convert it into a voltage signal through the sampling resistor R12, and then transmit it to the processing chip U4 through the RC filter circuit.

[0041] The current transmission line passes through transformer CT 1. The AC current signal sensed by transformer CT 1 is converted into a voltage signal by sampling resistor R12. This signal is then transmitted to the high-precision current sampling and processing chip U4 through an RC filter circuit. Processing chip U4 then converts the current signal into a specific current code rate and stores it in its register. When the serial port is read, the stored current code rate is sent to the MCU. The MCU obtains the current code rate and converts it into a measured current value using a calculation formula. The leakage current can be measured within a range of values, such as 10uA to 35mA. This allows for accurate analysis of the insulation performance of zinc oxide. As the insulation performance of zinc oxide gradually decreases to a certain level during use, the corresponding leakage current will increase. When the leakage current reaches a certain mA value, it can be determined that the zinc oxide insulation does not meet the requirements.

[0042] Specifically, the lightning monitoring circuit includes a transformer CT2, a sampling resistor R18, an RC filter circuit and a processing chip U5. The transformer CT2 is connected to the diversion transmission line.

[0043] The drainage transmission line passes through the transformer CT2. When the zinc oxide is struck by lightning, the current in the drainage transmission line will increase to several amperes. When the current of several amperes passes through the transformer CT2, the current induced by CT2 will be very large. After being converted into a voltage signal by resistor R18 and processed by RC filtering, it is compared with the reference voltage. When the voltage value converted by R18 is higher than the reference value by a certain amount, the processing chip U5 will send a low level for a certain period of time. After detecting the low level for a certain period of time, the MCU determines that it is a lightning strike. The operational amplifier of the processing chip U5 responds at a high speed, accurately feeds back the lightning strike signal to the MCU, and the signal is recorded and stored by the MCU.

[0044] Technical personnel should note: Although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention. Any modification using the inventive concept will be included in the scope of protection of this patent.

Claims

1. A detachable intelligent monitoring arrester, comprising an arrester housing and a zinc oxide component disposed within the arrester housing, characterized in that: It also includes an intelligent monitoring bottom shell and an intelligent monitoring module, the intelligent monitoring module includes a drainage transmission line, a current sensor, an intelligent monitoring circuit board and a signal line, the zinc oxide component is electrically connected to the current sensor through the drainage transmission line, the current sensor is connected to the intelligent monitoring circuit board, the signal line is connected to the intelligent monitoring circuit board and extends out of the intelligent monitoring bottom shell, the intelligent monitoring circuit board includes a zinc oxide monitoring circuit, and the zinc oxide monitoring circuit is used to analyze whether the zinc oxide component meets the requirements; The intelligent monitoring bottom shell comprises a shell body, a plastic shell upper cover, a plastic shell lower cover and an iron inner shell arranged in the shell body; The lower end of the arrester housing is detachably connected to the intelligent monitoring bottom housing via a screw; The zinc oxide assembly includes nylon plastic coating, an upper connecting piece, a lower connecting piece and a plurality of zinc oxide sheets; An upper connecting cover, a copper sheet, and a second zinc oxide resistor are sequentially arranged in the cavity of the upper cover of the plastic shell from top to bottom. A connecting section extends from the upper end of the upper connecting cover. The connecting section is provided with a second internal screw hole that is threadedly matched with the screw. The lower connecting piece is threadedly connected to the connecting section via the screw. The bottom of the intelligent monitoring bottom shell is provided with an iron base connected to the cross arm, the iron base is connected to the lower cover of the plastic shell by bolts, the iron base is electrically connected to the zinc oxide resistor through the iron inner shell, and the lower end of the drainage transmission line passes through the current sensor and is connected to the iron base.

2. The detachable intelligent monitoring arrester according to claim 1 is characterized in that: "L"-shaped connecting grooves are provided on both sides of the upper end of the shell body, and the plastic shell upper cover is connected to the "L"-shaped connecting grooves of the shell body through connecting bolts on both sides of the plastic shell upper cover.

3. The detachable intelligent monitoring arrester according to claim 1 is characterized in that: The plurality of zinc oxide sheets are stacked and plastic-coated in a nylon plastic coating. The upper connecting piece and the lower connecting piece are arranged at both ends of the zinc oxide sheets, and the upper connecting piece and the lower connecting piece are both provided with a first inner screw hole.

4. The detachable intelligent monitoring arrester according to claim 1 is characterized in that: The intelligent monitoring circuit board includes a communication module, a lightning monitoring circuit and an MCU. The lightning monitoring circuit is used to monitor and record the number of lightning strikes.

5. The detachable intelligent monitoring arrester according to claim 1 is characterized in that: The zinc oxide monitoring circuit includes a transformer CT1, a sampling resistor R12, an RC filter circuit and a processing chip U4. The transformer CT1 is connected to the drainage transmission line to sense the AC current signal and convert it into a voltage signal through the sampling resistor R12, and then transmit it to the processing chip U4 through the RC filter circuit.

6. The detachable intelligent monitoring arrester according to claim 4, characterized in that: The lightning monitoring circuit includes a transformer CT2, a sampling resistor R18, an RC filter circuit and a processing chip U5. The transformer CT2 is connected to the diversion transmission line.

Images