Novel lightning arrester monitor
By designing a new type of surge arrester monitor, which uses an aluminum alloy housing and circuit board to process lightning strike signals, the problems of water leakage and inaccurate measurement in surge arrester monitors have been solved, achieving higher sealing performance and measurement accuracy, and extending the equipment's lifespan.
Patent Information
- Application Number
- CN202423090825.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing surge arrester monitors suffer from problems such as internal water leakage, inaccurate current measurement values, and inaccurate counting.
A novel surge arrester monitor was designed, which uses an aluminum alloy housing, an ammeter and a counter, combined with a limiting circuit, a rectifier circuit and an output circuit on a circuit board. A sealed structure prevents water leakage, and a high-transparency glass panel and a carbon material pointer improve measurement accuracy. The circuit board processes lightning strike signals to record the number of strikes and the magnitude of the current.
This technology ensures the sealing and measurement accuracy of the surge arrester monitor, avoids water seepage and air leakage, improves the accuracy of current measurement values and counters, and extends service life.
Smart Images
Figure CN223841940U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of surge arrester monitors, and more particularly to a novel surge arrester monitor. Background Technology
[0002] Surge arresters are widely used in power systems, and their condition directly affects the operational safety of the entire power grid. Because surge arresters are subjected to operating voltage for extended periods, their varistor plates gradually deteriorate. Furthermore, surge arresters are susceptible to moisture, which further accelerates their deterioration and can even lead to explosions in severe cases. Surge arrester monitoring devices are one of the effective means of condition-based maintenance of surge arresters; however, existing surge arrester monitoring devices suffer from technical problems such as internal water leakage, inaccurate current measurements, and inaccurate counting.
[0003] Therefore, improvements are needed. Utility Model Content
[0004] This application provides a novel surge arrester monitor to solve the technical problems of existing surge arrester monitors, such as internal water leakage, inaccurate current measurement values, and inaccurate counting.
[0005] In view of this, this application provides a novel surge arrester monitor, including a housing, an ammeter, an observation window, and a counter. The ammeter and the counter are both installed within the housing. A conductive rod is provided on the upper part of the housing. The observation window is installed at the front end of the housing. A sealing shell is fixedly connected to the front end of the housing. The sealing shell and the housing are sealed by a circular sealing ring and a flat sealing gasket. A sealing edge is provided on the outside of the sealing shell. A circuit board is provided within the housing. The circuit board has a limiting circuit, a rectifier circuit, and an output circuit. The input terminal of the limiting circuit is electrically connected to the conductive rod. The output terminal of the limiting circuit is electrically connected to the input terminal of the rectifier circuit. The output terminal of the rectifier circuit is electrically connected to the input terminal of the output circuit. The output terminal of the output circuit is electrically connected to both the ammeter and the counter.
[0006] Optionally, the glass panel of the observation window is a high-transparency glass panel.
[0007] Optionally, the outer casing is an aluminum alloy casing, and the surface of the outer casing is painted using an electroplating process.
[0008] Optionally, the pointer material of the ammeter is carbon material.
[0009] Optionally, the bottom of the housing is provided with a mounting end.
[0010] Optionally, a porcelain bottle is fitted onto the conductive rod.
[0011] Optionally, the mounting end and the outer casing are an integral structure.
[0012] Optionally, the outer casing is provided with a metal pressure plate and a zinc oxide resistor sheet. One end electrode of the zinc oxide resistor sheet is electrically connected to the outer casing, and the other end electrode of the zinc oxide resistor sheet is electrically connected to the conductive rod. The zinc oxide resistor sheet is fixedly connected to the inner wall of the outer casing through the metal pressure plate.
[0013] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:
[0014] This application provides a novel surge arrester monitor, comprising a housing, an ammeter, an observation window, and a counter. The ammeter and the counter are both installed inside the housing. The observation window is installed at the front end of the housing, and a sealing shell is fixedly connected to the front end of the housing. The sealing shell and the housing are sealed by a circular sealing ring and a flat sealing gasket. A sealing edge is provided on the outside of the sealing shell to ensure the reliability of the seal and to avoid water leakage or air leakage.
[0015] The circuit board housed within the ammeter, counter, and housing is equipped with a limiting circuit, a rectifier circuit, and an output circuit. This allows for the recording and monitoring of the number of surge arrester operations and changes in surge arrester current, thereby improving the accuracy of current measurements and counter counts. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a front view of the surge arrester monitor;
[0018] Figure 2 Left view of the surge arrester monitor;
[0019] Figure 3 This is a cross-sectional view of a surge arrester monitor.
[0020] Figure 4 This is the circuit diagram of the circuit board for a surge arrester monitor.
[0021] The attached figures are labeled as follows:
[0022] 1. Outer casing; 2. Glass cover; 3. Porcelain insulator; 4. Conductive rod; 5. Mounting end; 6. Glass panel; 7. Circular sealing ring; 8. Flat sealing gasket; 9. Metal pressure plate; 10. Zinc oxide resistance element; 11. Counter; 12. Ammeter; 13. Circuit board. Detailed Implementation
[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0024] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0026] For easier understanding, please refer to Figures 1 to 4This application provides an embodiment of a novel surge arrester monitor, comprising a housing 1, an ammeter 12, an observation window, and a counter 11. Both the ammeter 12 and the counter 11 are installed within the housing. The ammeter 12 monitors the current magnitude of the surge arrester, and the counter records the number of times the surge arrester operates, i.e., the number of times it is struck by lightning. The housing 1 is made of aluminum alloy. An observation window is installed at the front end of the housing 1 for convenient observation of the data from the counter and ammeter 12. A conductive rod 4 is provided on the upper part of the housing 1. A sealing shell is fixedly connected to the front end of the housing 1. The sealing shell and the housing 1 are sealed by a circular sealing ring 7 and a flat sealing gasket 8. A sealing edge is provided on the outside of the sealing shell to ensure the reliability of the seal, preventing water leakage and air leakage. This improves the mechanical strength and sealing performance of the surge arrester monitor, avoiding malfunctions caused by seal failure.
[0027] The outer casing 1 contains a circuit board 13, which includes a limiting circuit, a rectifier circuit, and an output circuit. The input terminal of the limiting circuit is electrically connected to the conductive rod 4, and the output terminal of the limiting circuit is electrically connected to the input terminal of the rectifier circuit. The output terminal of the rectifier circuit is electrically connected to the input terminal of the output circuit, and the output terminal of the output circuit is electrically connected to an ammeter and a counter meter, respectively. Specifically, the limiting circuit includes a resistor and a current-limiting resistor, the rectifier circuit includes a varistor and a rectifier bridge, and the output circuit includes a charging and discharging capacitor, a matching resistor, a diode D1, and a diode D2. The output circuit is electrically connected to an ammeter 12 and a counter meter 11, respectively. The ammeter 12 is a milliammeter, and the counter meter 11 is an electromagnetic counter meter.
[0028] At work, such as Figure 3 As shown, the lightning discharge signal (a high-voltage pulse signal with positive and negative polarities) is introduced from the high-voltage terminal HV. Resistor V1 limits the high voltage of the discharge signal to prevent damage to downstream devices, and current-limiting resistor R1 limits the high current of the discharge signal to prevent damage to downstream devices. After voltage and current limiting, the discharge signal passes through varistor MYG. Utilizing the non-linear characteristics of varistor MYG (i.e., low voltage fluctuation under mA to kA discharge current), the voltage signal in the discharge signal is converted into a stable voltage signal. Then, it is rectified into a positive DC voltage by rectifier bridge BG1, and after being regulated by charging / discharging capacitor C1, it drives counter 11 to record one discharge, i.e., one lightning strike on the arrester. After the limiting and rectifying circuits, the DC voltage, stabilized by the charging / discharging capacitor, is displayed on ammeter 12, thus recording and monitoring the number of arrester actions and changes in arrester current, improving the accuracy of current measurement and counter counting.
[0029] Furthermore, the glass panel 6 of the observation window is a high-transparency glass panel 6, which makes it easier for staff to observe the data of the counter and ammeter 12. The high-transparency glass panel 6 also has an anti-fog function, which improves the reliability of use.
[0030] Furthermore, the outer casing is an aluminum alloy casing 1, and the surface of the casing is painted using an electroplating process, which allows it to work in harsher environments and improves the practicality of the aluminum alloy casing 1.
[0031] Furthermore, the pointer of ammeter 12 is made of carbon material, which improves the durability of the pointer and extends the service life of the surge arrester monitor.
[0032] Furthermore, the bottom of the housing is provided with a mounting end 5, which facilitates the installation of the surge arrester monitor.
[0033] Furthermore, a porcelain insulator 3 is fitted onto the conductive rod 4. The conductive rod 4 is used to collect the input lightning amplification signal, and the porcelain insulator 3 serves to provide insulation between the conductive rod 4 (input lightning discharge signal) and the aluminum alloy shell 1.
[0034] Furthermore, the mounting end 5 is an integral structure with the outer casing, which improves the sealing performance and mechanical strength of the surge arrester monitor.
[0035] Furthermore, the housing contains a metal pressure plate 9 and a zinc oxide resistor 10. One end electrode of the zinc oxide resistor 10 is electrically connected to the housing, and the other end electrode is electrically connected to the conductive rod 4. The zinc oxide resistor 10 is fixedly connected to the inner wall of the housing through the metal pressure plate 9, which improves the connection stability of the zinc oxide resistor 10 and ensures the normal operation of the surge arrester monitor.
[0036] It should be noted that the electronic components used in this application, such as the ammeter 12, counter 11, and varistor MYG, are all existing electronic components in the field. Those skilled in the art can understand the circuit structure of the electronic components such as the ammeter 12, counter 11, and varistor MYG, as well as their interconnection structure, based on existing publicly available technical knowledge and technical data. This application will not elaborate on this in detail, and those skilled in the art can freely select the appropriate models as needed. This embodiment does not impose any specific restrictions here.
[0037] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A novel surge arrester monitor, characterized in that, The device includes an outer casing, an ammeter, an observation window, and a counter. Both the ammeter and the counter are mounted within the outer casing. A conductive rod is located at the top of the outer casing, and the observation window is installed at the front end. A sealing shell is fixedly connected to the front end of the outer casing, and the sealing shell is sealed to the outer casing by a circular sealing ring and a flat sealing gasket. A sealing edge is provided on the outside of the sealing shell. A circuit board is located within the outer casing, and the circuit board includes a limiting circuit, a rectifier circuit, and an output circuit. The input terminal of the limiting circuit is electrically connected to the conductive rod, and the output terminal of the limiting circuit is electrically connected to the input terminal of the rectifier circuit. The output terminal of the rectifier circuit is electrically connected to the input terminal of the output circuit, and the output terminal of the output circuit is electrically connected to both the ammeter and the counter.
2. The novel surge arrester monitor according to claim 1, characterized in that, The observation window has a high-transparency glass panel.
3. A novel surge arrester monitor according to claim 1, characterized in that, The outer shell is made of aluminum alloy, and the surface of the outer shell is painted using an electroplating process.
4. A novel surge arrester monitor according to claim 1, characterized in that, The pointer of the ammeter is made of carbon material.
5. A novel surge arrester monitor according to claim 1, characterized in that, The bottom of the outer casing is provided with a mounting end.
6. A novel surge arrester monitor according to claim 1, characterized in that, A porcelain bottle is fitted onto the conductive rod.
7. A novel surge arrester monitor according to claim 5, characterized in that, The mounting end and the outer shell are an integral structure.
8. A novel surge arrester monitor according to claim 1, characterized in that, The outer casing contains a metal pressure plate and a zinc oxide resistor. One end electrode of the zinc oxide resistor is electrically connected to the outer casing, and the other end electrode is electrically connected to the conductive rod. The zinc oxide resistor is fixedly connected to the inner wall of the outer casing through the metal pressure plate.