A modular counter and surge arrester

Abstract

This invention provides a modular counter and surge arrester. The modular counter includes a housing module, a shunt signal extraction module, and a counting indicator module. The housing module includes an insulating housing, an upper electrode, and a lower electrode, both of which are embedded within the insulating housing. The shunt signal extraction module and the counting indicator module are both installed within the insulating housing, with the positive terminals of the shunt signal extraction module and the counting indicator module electrically connected to the upper electrode, and the negative terminals of the shunt signal extraction module and the counting indicator module electrically connected to the lower electrode. Because the upper and lower electrodes are embedded within the insulating housing, the modular counter provided by this invention achieves integration of the upper electrode, lower electrode, and insulating housing. Therefore, it avoids sealing at the connection points between the upper electrode and the insulating housing, and between the lower electrode and the insulating housing, effectively reducing the sealing surface area. Furthermore, the modular design of the shunt signal extraction module and the counting indicator module also reduces the sealing surface area.

Description

Technical Field

[0001] This invention relates to the field of online monitoring equipment technology for metal oxide surge arresters, and in particular to a modular counter and surge arrester. Background Technology

[0002] Currently, all components of surge arrester counters are assembled. During the assembly process, there are many manual sealing surfaces and many assembly steps, which leads to many factors affecting product stability.

[0003] Therefore, how to facilitate the assembly of counters, reduce assembly steps, and improve the stability of counters is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the first objective of the present invention is to provide a modular counter that facilitates counter assembly, reduces assembly steps, and improves counter stability.

[0005] The second objective of this invention is to provide a surge arrester.

[0006] To achieve the first objective mentioned above, the present invention provides the following technical solution:

[0007] A modular counter includes a housing module, a shunt signal acquisition module, and a counting indicator module;

[0008] The housing module includes an insulating housing, an upper electrode, and a lower electrode, both of which are embedded within the insulating housing;

[0009] Both the shunt signal acquisition module and the counting indicator module are installed inside the insulating housing, and the positive terminals of the shunt signal acquisition module and the counting indicator module are electrically connected to the upper electrode, respectively, while the negative terminals of the shunt signal acquisition module and the counting indicator module are electrically connected to the lower electrode, respectively.

[0010] In one specific embodiment, the insulating housing includes an upper housing and a lower housing;

[0011] Both the upper and lower housings are injection molded.

[0012] The upper housing covers the lower housing, the counting indicator module is installed inside the upper housing, and the shunt signal acquisition module is installed inside the lower housing.

[0013] In another specific embodiment, the modular counter further includes a sealing ring;

[0014] The sealing surface of the upper housing and the sealing surface of the lower housing are sealed by the sealing ring.

[0015] In another specific embodiment, the shunt signal acquisition module includes an electrode pressure plate;

[0016] The lower housing has an installation cavity, and the electrode pressure plate is installed in the installation cavity.

[0017] In another specific embodiment, the shunt signal acquisition module further includes a resistor;

[0018] The first side of the resistor is electrically connected to the lower electrode, the second side of the resistor is electrically connected to the first side of the electrode plate, and the second side of the electrode plate is electrically connected to the upper electrode.

[0019] In another specific implementation, the shunt signal acquisition module further includes a first pad and a second pad;

[0020] The first pad is placed between the first side of the resistor and the lower electrode;

[0021] The second pad is placed between the second side of the resistor sheet and the electrode plate.

[0022] In another specific embodiment, the upper electrode and the electrode plate are riveted together by copper studs;

[0023] The lower electrode, the first pad, the resistive sheet, the second pad, and the electrode pressure plate are riveted together by copper studs;

[0024] The upper electrode is riveted to the positive electrode of the counting indicator module via a copper stud.

[0025] The lower electrode is riveted to the negative electrode of the counting indicator module via a copper stud.

[0026] The upper shell is formed by injecting polycarbonate flux into a mold;

[0027] The lower shell is formed by injecting molten plastic into a mold.

[0028] In another specific embodiment, an insulating sheath surrounding the resistor is provided on the side wall of the mounting cavity, and the insulating sheath is integrally formed and connected to the lower housing.

[0029] In another specific embodiment, the counting indicator module includes a rectifier bridge, a counter body, a capacitor, a varistor, and an inductor integrated on the same circuit board;

[0030] The rectifier bridge, the counter body, the capacitor, and the varistor are connected in parallel, and the positive terminal of the parallel connection is connected in series with the inductor.

[0031] The various embodiments of the present invention can be combined arbitrarily as needed, and the resulting embodiments are also within the scope of the present invention and are part of the specific implementation of the present invention.

[0032] As can be seen from the above technical solution, the modular counter provided by the present invention integrates the upper electrode, the lower electrode and the insulating shell by embedding the upper electrode and the lower electrode in the insulating shell. Therefore, it avoids sealing at the connection between the upper electrode and the insulating shell and the connection between the lower electrode and the insulating shell, effectively reducing the sealing surface. In addition, the modular design of the shunt signal acquisition module and the counting indicator module also reduces the sealing surface.

[0033] To achieve the second objective mentioned above, the present invention provides the following technical solution:

[0034] A surge arrester comprising a modular counter as described in any of the preceding claims.

[0035] Since the surge arrester disclosed in this invention includes any of the modular counters mentioned above, the beneficial effects of the modular counters are all included in the surge arrester disclosed in this invention. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the front cross-sectional structure of the modular counter provided by the present invention;

[0038] Figure 2 This is a top cross-sectional view of the modular counter provided by the present invention;

[0039] Figure 3 This is a circuit diagram of the counting indicator module provided by the present invention.

[0040] in, Figure 1-3 middle:

[0041] Insulating housing 1, upper electrode 2, lower electrode 3, upper housing 101, lower housing 102, sealing ring 4, electrode pressure plate 5, mounting cavity 103, resistor 6, first pad 7, second pad 8, copper stud 9, insulating layer 10, rectifier bridge 11, counter body 12, capacitor 13, varistor 14, inductor 15, counting indicator module 16. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1-2 As shown, the present invention discloses a modular counter, wherein the modular counter includes a housing module, a shunt signal acquisition module and a counting indicator module 16.

[0044] The housing module includes an insulating housing 1, an upper electrode 2, and a lower electrode 3. The upper electrode 2 and the lower electrode 3 are both embedded in the insulating housing 1. Specifically, the upper electrode 2 and the lower electrode 3 are placed in the mold corresponding to the insulating housing 1 and are embedded in the insulating housing 1 during injection molding.

[0045] Both the shunt signal acquisition module and the counting indicator module 16 are installed inside the insulating housing 1. The positive terminals of the shunt signal acquisition module and the counting indicator module 16 are electrically connected to the upper electrode 2, and the negative terminals of the shunt signal acquisition module and the counting indicator module 16 are electrically connected to the lower electrode 3.

[0046] It should be noted that the counting indicator module 16 can also be replaced by the core of other devices to expand the device. For example, the counting indicator module 16 can be replaced by the core of a monitor to expand it into a monitor product.

[0047] The modular counter provided by this invention integrates the upper electrode 2, the lower electrode 3, and the insulating housing 1 by embedding both the upper electrode 2 and the lower electrode 3 within the insulating housing 1. This avoids sealing at the connection points between the upper electrode 2 and the insulating housing 1 and between the lower electrode 3 and the insulating housing 1, effectively reducing the sealing surface. Furthermore, the modular design of the shunt signal acquisition module and the counting indicator module 16 also reduces the sealing surface.

[0048] In some embodiments, the insulating housing 1 includes an upper housing 101 and a lower housing 102, both of which are injection molded.

[0049] Specifically, the present invention discloses that the upper shell 101 is formed by injecting polycarbonate flux into a mold, and the polycarbonate has a temperature resistance of ≥120℃.

[0050] The lower housing 102 is formed by injecting molten bulk molding compound into a mold. It should be noted that the upper housing 101 and the lower housing 102 can also be made of other insulating materials, and the bulk molding compound has a temperature resistance of ≥120℃.

[0051] The upper housing 101 covers the lower housing 102. Specifically, the upper housing 101 and the lower housing 102 are detachably connected by screws, which facilitates disassembly and assembly.

[0052] To further improve the sealing performance of the upper housing 101 and the lower housing 102, the present invention discloses a modular counter that also includes a sealing ring 4, and the sealing surfaces of the upper housing 101 and the lower housing 102 are sealed by the sealing ring 4.

[0053] The counting indicator module 16 is installed inside the upper housing 101, and the shunt signal acquisition module is installed inside the lower housing 102.

[0054] In some embodiments, the shunt signal acquisition module includes an electrode plate 5, and a mounting cavity 103 is provided in the lower housing 102, with the electrode plate installed in the mounting cavity 103. Specifically, the two sides of the electrode plate are electrically connected to the upper electrode 2 and the lower electrode 3, respectively. The plane of the mounting cavity 103 facing the upper housing 101 is the plane of the upper electrode 2.

[0055] Furthermore, the present invention discloses that the shunt signal acquisition module also includes a resistor 6, which is placed within the mounting cavity 103. The first side of the resistor 6 is electrically connected to the lower electrode 3, and the second side of the resistor 6 is electrically connected to the first side of the electrode pressure plate 5. The second side of the electrode pressure plate 5 is electrically connected to the upper electrode 2. Specifically, the resistor 6 may consist of only one piece, or it may consist of two or more pieces connected in parallel, allowing for applications to higher voltage levels.

[0056] Furthermore, the present invention discloses that the shunt signal acquisition module also includes a first pad 7 and a second pad 8. Both the first pad 7 and the second pad 8 are placed within the mounting cavity 103, that is, the lower housing 102 integrates the mounting cavity 103 for mounting the resistor 6. The first pad 7 is placed between the first side of the resistor 6 and the lower electrode 3, and the second pad 8 is placed between the second side of the resistor 6 and the electrode pressure plate 5. The arrangement of the first and second pads facilitates the adjustment of the height of the electrode pressure plate 5 to achieve electrical connection with the upper electrode 2 and the lower electrode 3.

[0057] In some embodiments, the upper electrode 2 is riveted to the electrode plate by copper studs 9, and the lower electrode 3, the first pad 7, the resistor sheet 6, the second pad 8 and the electrode plate 5 are riveted to each other by copper studs 9.

[0058] Furthermore, this invention discloses that the upper electrode 2 is mechanically and electrically connected to the positive terminal of the counting indicator module 16 via a copper stud 9 and a washer. The lower electrode 3 is mechanically and electrically connected to the negative terminal of the counting indicator module 16 via a copper stud 9 and a washer.

[0059] The riveting method of the copper stud 9 achieves both mechanical and electrical connection, avoiding the use of electrical wiring and reducing the electrical wiring required for the counter.

[0060] It should be noted that, in order to increase the connection strength, this invention discloses that when riveting the copper stud 9, a gasket is used for locking.

[0061] In some embodiments, an insulating sheath 10 surrounding the resistor sheet 6 is provided on the side wall of the mounting cavity 103, and the insulating sheath 10 is integrally formed and connected to the lower housing 102. Specifically, the insulating sheath 10 is provided at the thinnest part of the side wall of the mounting cavity 103, with a 2mm clump of molding compound material reserved, which can replace the reinforcing insulating ring on the side of the resistor sheet 6, that is, the present invention further reduces the number of parts.

[0062] In some embodiments, the counting indicator module 16 includes a rectifier bridge 11, a counter body 12, a capacitor 13, a varistor 14, and an inductor 15 integrated on the same circuit board, such as Figure 3 As shown, multiple components can be mounted on a single circuit board, further reducing the mounting surface area.

[0063] The rectifier bridge 11, the counter body 12, the capacitor 13 and the varistor 14 are connected in parallel, and the positive terminal of the parallel connection is connected in series with the inductor 15.

[0064] Specifically, the present invention discloses the main electrical parameters of the inductor 15 of the counting indicator module 16: rated inductance 10±1mH, resistance 13±1Ω; main electrical parameters of the rectifier bridge 11: operating current 10A, forward and reverse withstand voltage 1000V (peak); main electrical parameters of the capacitor 13: 4.75±5%μF, maximum withstand voltage 630V (peak); main electrical parameters of the single-pointer counter body 12: minimum starting voltage 10V-12V (DC, peak), coil internal resistance 560±1Ω; power ≥5W; main electrical parameters of the varistor 14: power 0.4W, nominal voltage: 470±10%V (DC), current capacity: 2500A (peak), residual voltage: 775V (peak). The counting indicator circuit designed with these parameters passed the 8 / 20μs waveform operation test, the lower limit 50A (peak) and upper limit 10kA (peak) test, the 4 / 10μs waveform 100kA (peak) high current test, the 2ms waveform 800A (peak) current test, the negative pressure 0.02Mpa sealing test, and the cold and hot cycle test from -40℃ to +100℃.

[0065] This invention sets up a modular counter as three main modules, which have functional integration. For example, the upper electrode 2 and the lower electrode 3 are integrated with the insulating housing 1, which effectively reduces the need for manual assembly of the sealing surface. At the same time, the mounting cavity 10310 of the integrated resistor 6 is replaced by the side wall to reinforce the insulating ring on the side of the resistor 6. It has scalability. For example, by replacing the upper and lower gaskets with another resistor 6, it can be extended to higher voltage levels. By replacing the counting indicator part with the monitor core, it can be extended into a monitor product.

[0066] In another aspect, the present invention provides a surge arrester including a modular counter as described in any of the above embodiments.

[0067] Since the surge arrester disclosed in this invention includes the modular counter in any of the above embodiments, the beneficial effects of the modular counter are all included in the surge arrester disclosed in this invention.

[0068] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0069] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A modular counter, characterized in that, Includes a housing module, a shunt signal acquisition module, and a counting indicator module; The housing module includes an insulating housing, an upper electrode, and a lower electrode, both of which are embedded within the insulating housing; Both the shunt signal acquisition module and the counting indicator module are installed inside the insulating housing, and the positive terminals of the shunt signal acquisition module and the counting indicator module are electrically connected to the upper electrode, respectively, while the negative terminals of the shunt signal acquisition module and the counting indicator module are electrically connected to the lower electrode, respectively. The insulating housing includes an upper housing and a lower housing; both the upper housing and the lower housing are injection molded; the upper housing covers the lower housing, the counting indicator module is installed inside the upper housing, and the shunt signal acquisition module is installed inside the lower housing; the upper housing and the lower housing are detachably connected by screws. The shunt signal acquisition module includes an electrode pressure plate; The lower housing has an installation cavity, and the electrode pressure plate is installed in the installation cavity. The shunt signal acquisition module also includes a resistor; The first side of the resistive element is electrically connected to the lower electrode, the second side of the resistive element is electrically connected to the first side of the electrode plate, and the second side of the electrode plate is electrically connected to the upper electrode. The signal shunt module also includes a first pad and a second pad; The first pad is placed between the first side of the resistor and the lower electrode; The second pad is placed between the second side of the resistive sheet and the electrode plate. The first pad and the second pad are used to adjust the height of the electrode plate to achieve electrical connection with the upper electrode and the lower electrode.

2. The modular counter according to claim 1, characterized in that, It also includes sealing rings; The sealing surface of the upper housing and the sealing surface of the lower housing are sealed by the sealing ring.

3. The modular counter according to claim 1, characterized in that, The upper electrode is riveted to the electrode plate by copper studs; The lower electrode, the first pad, the resistive sheet, the second pad, and the electrode pressure plate are riveted together by copper studs; The upper electrode is riveted to the positive electrode of the counting indicator module via a copper stud. The lower electrode is riveted to the negative electrode of the counting indicator module via a copper stud. The upper shell is formed by injecting polycarbonate flux into a mold; The lower shell is formed by injecting molten plastic into a mold.

4. The modular counter according to claim 1, characterized in that, An insulating sheath surrounding the resistor is provided on the side wall of the mounting cavity, and the insulating sheath is integrally formed and connected to the lower housing.

5. The modular counter according to any one of claims 1-4, characterized in that, The counting indicator module includes a rectifier bridge, a counter body, a capacitor, a varistor, and an inductor integrated on the same circuit board; The rectifier bridge, the counter body, the capacitor, and the varistor are connected in parallel, and the positive terminal of the parallel connection is connected in series with the inductor.

6. A surge arrester, characterized in that, Includes the modular counter as described in any one of claims 1-5.

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