A lightning arrester valve piece test device

Abstract

The application discloses a lightning arrester valve piece test device, which comprises an insulating sleeve body, a first joint and a conductive shell. The insulating sleeve body is in a tubular structure, the first joint is connected to an inlet end of the insulating sleeve body, the conductive shell is a sealed shell and is filled with insulating gas, the conductive shell is connected to an outlet end of the insulating sleeve body, and the insulating sleeve body, the first joint and the conductive shell form a test cavity. A side of the first joint and / or the conductive shell close to the test cavity is provided with an elastic contact. When an electric current is generated in the test device, the process that the lightning arrester valve piece is subjected to lightning and conducts electricity can be simulated. When the test device is used to conduct an experiment, the elastic contact can extrude the lightning arrester valve piece at the end, so that the electric current passing through the lightning arrester valve piece is more uniform and stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lightning protection, in particular to a lightning arrester valve piece testing device. BACKGROUND

[0002] A lightning arrester valve piece is configured on a lightning rod or a lightning wire to protect electrical equipment from lightning. However, the lightning rod will be damaged after being struck by lightning. In order to improve the service life of the lightning rod or the lightning wire, the lightning arrester valve piece is configured on the lightning rod or the lightning wire to ensure that the lightning arrester valve piece will conduct electricity only when the overvoltage reaches the withstand voltage value. In order to produce lightning arrester valve pieces with qualified quality, the conductivity of the lightning arrester valve pieces needs to be tested, and thus a lightning arrester valve piece testing device is needed.

[0003] The lightning arrester valve piece testing device in the prior art has a simple structure. When the lightning arrester valve piece is tested, the current passing through the lightning arrester valve piece is unstable and uneven, which leads to abnormal test results and makes it difficult to evaluate the quality of the lightning arrester valve piece and reduces the test efficiency. SUMMARY

[0004] The lightning arrester valve piece testing device can make the current passing through the lightning arrester valve piece more stable and uniform, so as to make the test results more accurate, detect the quality of the lightning arrester valve piece more accurately, and improve the test efficiency.

[0005] To achieve the above-mentioned purpose, the lightning arrester valve piece testing device comprises an insulating sleeve, a first connector and a conductive shell. The insulating sleeve is in a tubular structure, and the tubular structure comprises an inlet end and an outlet end. The first connector is connected to the inlet end of the insulating sleeve. The conductive shell is a sealed shell filled with insulating gas. The conductive shell is connected to the outlet end of the insulating sleeve, and the insulating sleeve, the first connector and the conductive shell form an experimental cavity to accommodate the lightning arrester valve piece to be tested. The side of the first connector and / or the conductive shell close to the experimental cavity is provided with an elastic contact.

[0006] Optionally, the experimental cavity is a sealed cavity.

[0007] Optionally, the elastic contact comprises a spring contact, and the spring contact can be elongated or shortened along the axial direction of the insulating sleeve.

[0008] Optionally, the elastic contact is a plurality of elastic contacts, and the plurality of elastic contacts are uniformly distributed along the cross-sectional direction of the insulating sleeve.

[0009] Optionally, the first joint is detachably connected to the inlet end of the insulating sleeve.

[0010] Optionally, the first joint comprises a terminal and a closed conductive plate, and the terminal is connected to the closed conductive plate.

[0011] Optionally, a side of the closed conductive plate close to the experimental cavity is provided with a groove for fixedly connecting the elastic contact.

[0012] Optionally, the conductive shell is provided with a gas valve.

[0013] Optionally, the insulating sleeve is a ceramic sleeve.

[0014] Optionally, the insulating gas is SF6 gas.

[0015] Compared with the prior art, the application has at least the following beneficial effects:

[0016] The insulating sleeve, the first joint and the conductive shell constitute the basic structure of the test device, and the insulating sleeve, the first joint and the conductive shell enclose the experimental cavity, which can be used to accommodate the lightning arrester valve pieces to be tested. Since the conductive shell is a sealed shell and is filled with insulating gas, the insulating gas can simulate the atmosphere, so that when an electric current is generated in the test device, the process of the lightning arrester valve piece being struck by lightning and conducting electricity can be simulated, so that whether the lightning arrester valve piece meets the actual functional requirements can be more accurately determined.

[0017] Then, a side of the first joint and / or the conductive shell close to the experimental cavity is provided with an elastic contact. In this way, after the lightning arrester valve pieces are loaded into the experimental cavity, the elastic contact can press the lightning arrester valve pieces at the end, so that the lightning arrester valve pieces can be pressed against each other, so as to increase the contact area between adjacent lightning arrester valve pieces, thereby increasing the current-carrying area of the lightning arrester valve pieces, so that the current passing through the lightning arrester valve pieces is more uniform. In addition, since the lightning arrester valve pieces can be pressed against each other, the probability of poor contact between the lightning arrester valve pieces is reduced, so that the current passing through the lightning arrester valve pieces is more stable. Further, since the current passing through the lightning arrester valve pieces is more stable and more uniform, the problem of local overheating of the lightning arrester valve pieces is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following embodiments are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 is a structural schematic diagram of a lightning arrester valve piece test device provided by the embodiments of the present application;

[0020] Figure 2 is a structural schematic diagram of a first joint in Figure 1

[0021] Figure 3 is a structural schematic diagram of a conductive shell in Figure 1

[0022] Figure 4 is a top view of a gas valve in Figure 3

[0023] Legend of reference signs:

[0024] 1-insulating sleeve body;

[0025] 2-first joint; 21-wiring terminal; 22-closed conductive plate; 23-groove;

[0026] 3-conductive shell; 31-insulating gas; 32-gas valve;

[0027] 4-experimental cavity;

[0028] 5-elastic contact;

[0029] 100-lightning arrester valve piece test device;

[0030] A-lightning arrester valve piece. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] ​​​In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0033] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0034] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be broadly understood. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0035] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific types and structures can be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0036] The technical solutions of the present application will be further described below in conjunction with specific embodiments and drawings.

[0037] Figure 1 is a structural schematic diagram of a lightning arrester valve piece test device 100 provided by an embodiment of the present application.

[0038] Referring to Figure 1 The lightning arrester valve piece test device 100 comprises an insulating sleeve body 1, a first connector 2 and a conductive shell 3. The insulating sleeve body 1 is a tubular structure, and the tubular structure comprises an inlet end and an outlet end. The first connector 2 is connected to the inlet end of the insulating sleeve body 1. The conductive shell 3 is a sealed shell, and is filled with insulating gas 31 inside. The conductive shell 3 is connected to the outlet end of the insulating sleeve body 1, and the insulating sleeve body 1, the first connector 2 and the conductive shell 3 form an experimental cavity to accommodate the lightning arrester valve piece A to be tested. The side of the first connector 2 and / or the conductive shell 3 close to the experimental cavity is provided with an elastic contact 5.

[0039] When using the test apparatus 100 to test the surge arrester valve A, the surge arrester valve A is first installed into the test chamber. During installation, the structural surface of the surge arrester valve A must be aligned with the axial direction of the insulating sleeve 1. Figure 1 The X-axis direction is perpendicular to the circuit. Then, a power supply, switch, voltmeter, and ammeter are added. The first connector 2, power supply, switch, ammeter, and conductive housing 3 are connected in series using wires. The first connector 2 is connected to the high-voltage side of the power supply, and the conductive housing 3 is connected to the low-voltage side. The voltmeter is connected in parallel with the test device 100. Next, the switch is closed, and the readings of the ammeter and voltmeter are observed. This allows for analysis of the volt-ampere characteristics of the surge arrester valve A. Finally, the quality of the surge arrester valve A can be determined based on the analysis results. During the experiment, current flows into the first connector 2, passes through the elastic contact 5 and the surge arrester valve A, then flows out to the conductive housing 3, and finally flows back to the first connector 2 through an external circuit to form a closed loop.

[0040] In this embodiment, the insulating sleeve 1, the first connector 2, and the conductive shell 3 constitute the basic structure of the test device 100. The insulating sleeve 1, the first connector 2, and the conductive shell 3 enclose an experimental cavity 4, which can be used to accommodate the surge arrester valve A to be tested. Since the conductive shell 3 is a sealed shell filled with insulating gas 31, which can simulate the atmosphere, when a current is generated in the test device 100, it can simulate the process of the surge arrester valve A being struck by lightning and conducting electricity. Therefore, it is possible to more accurately determine whether the surge arrester valve A meets the requirements of the actual function.

[0041] Next, since an elastic contact 5 is provided on the side of the first connector 2 and / or conductive housing 3 near the experimental chamber, after the surge arrester valve A is inserted into the experimental chamber, the elastic contact 5 can compress the end of the surge arrester valve A, thereby causing mutual compression between the surge arrester valves A. This increases the contact area between adjacent surge arrester valves A, thus increasing the current-carrying area of ​​the surge arrester valve A, resulting in a more uniform current through the surge arrester valve A. Furthermore, because the surge arrester valves A can compress each other, the probability of poor contact between the surge arrester valves A is reduced, thus making the current through the surge arrester valve A more stable. Further, because the current through the surge arrester valve A is more stable and uniform, the problem of localized overheating of the surge arrester valve A is avoided.

[0042] In some embodiments, see Figure 1 The experimental chamber is a sealed cavity. In this way, the experimental chamber 4 is completely isolated from the outside air, thus preventing insulation breakdown, insulation failure, and partial discharge during the experiment. This allows the experiment to proceed more smoothly, improves experimental efficiency, and also enhances experimental safety.

[0043] In order to form the sealed cavity, the first joint 2 and the conductive shell 3 are both sealingly connected with the insulating sleeve 1. Before the experiment is carried out by using the test device 100, the sealing performance of the experimental cavity can be tested by using a wrapping method and a leak detector.

[0044] In some embodiments, referring to Figure 1 and Figure 2 , the elastic contact 5 comprises a spring contact capable of being elongated or shortened in the axial direction of the insulating sleeve 1. Since the elastic contact 5 must have both electrical conductivity and elasticity, the spring just meets the two characteristics. In addition, since the spring is a common elastic member, the production cost is low, thereby reducing the production cost of the test device 100.

[0045] In some embodiments, referring to Figure 1 and Figure 2 , the elastic contact 5 is a plurality of elastic contacts 5 uniformly distributed in the cross-sectional direction of the insulating sleeve 1. Since the direction of the current is the axial direction of the insulating sleeve 1 (the X-axis direction in Figure 1 , the plurality of elastic contacts 5 arranged uniformly in the cross-sectional direction of the insulating sleeve 1 can further make the current flow more uniformly in the cross-sectional direction of the insulating sleeve 1, thereby avoiding the problem of local overheating of the arrester valve disc A.

[0046] In order to make the test device 100 more convenient to use, in some embodiments, referring to Figure 1 and Figure 2 , the first joint 2 is detachably connected to the inlet end of the insulating sleeve 1. In this way, the first joint 2 can be separated from the insulating sleeve 1 before the arrester valve disc A is loaded into the insulating sleeve 1, and the first joint 2 can be connected to the insulating sleeve 1 after the arrester valve disc A is loaded into the insulating sleeve 1, thereby making the operation of loading the arrester valve disc A into the insulating sleeve 1 more convenient and fast, and thus improving the test efficiency.

[0047] It should be noted that the detachable connection method described above can be through bolt connection, clamp connection, or other connection methods with the same function, and the embodiments of the present application do not limit this.

[0048] In some embodiments, referring to Figure 1 and Figure 2 , the first joint 2 comprises a wiring terminal 21 and a closed conductive plate 22, and the wiring terminal 21 is connected with the closed conductive plate 22. The closed conductive plate 22 is sealingly connected with the inlet end of the insulating sleeve 1. In this way, the current flowing into the wiring terminal 21 can expand the current-carrying area through the closed conductive plate 22, thereby further making the current flow more uniformly in the cross-sectional direction of the insulating sleeve 1.

[0049] In some embodiments, referring to Figure 1 and Figure 2 , the side of the closed conductive plate 22 close to the experimental chamber is provided with a groove 23 for fixing the elastic contact 5. In this way, the elastic contact 5 can be more firmly connected to the closed conductive plate 22, thereby reducing the probability of poor contact during the experiment, so that the current through the arrester valve A is more stable.

[0050] In some embodiments, referring to Figure 1 , Figure 3 and Figure 4 , the conductive shell 3 is provided with a gas valve 32. The gas valve 32 can be used to fill gas into the conductive shell 3, or to discharge gas from the conductive shell 3. In this way, the amount of insulating gas 31 in the conductive shell 3 can be adjusted according to actual needs, thereby the conductive performance of the conductive shell 3 can be adjusted.

[0051] In order to enhance the insulation performance of the insulating sleeve 1, in some embodiments, referring to Figure 1 , the insulating sleeve 1 is a ceramic sleeve. Since the conductive performance of ceramic is very poor, it is commonly used as an insulating material in electrical equipment, and its production cost is low. In this way, not only the insulation performance of the insulating sleeve 1 is enhanced, but also the production cost of the test device 100 is reduced.

[0052] In order to enhance the insulation performance of the insulating gas 31 in the conductive shell 3, in some embodiments, referring to Figure 1 and Figure 3 , the insulating gas 31 is SF6 gas. Since SF6 is a strong electronegative gas, it can weaken the collision ionization process in the gas, so its insulation is better. In this way, the insulation performance of the insulating gas 31 can be enhanced.

[0053] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A surge arrester valve piece testing device characterized by, The utility model relates to a lightning arrester valve piece test device, including: An insulating sleeve body (1) is a tubular structure, which comprises an inlet end and an outlet end; A first joint (2) is connected to the inlet end of the insulating sleeve body (1); A conductive shell (3) is a sealed shell, filled with insulating gas (31) inside, connected to the outlet end of the insulating sleeve body (1), the insulating sleeve body (1), the first joint (2) and the conductive shell (3) form an experimental cavity to accommodate the lightning arrester valve piece A to be tested; The side of the first joint (2) and / or the conductive shell (3) close to the experimental cavity is provided with elastic contacts (5), the elastic contacts (5) are multiple, multiple elastic contacts (5) are uniformly distributed along the cross-sectional direction of the insulating sleeve body (1), the elastic contacts (5) include spring contacts, the spring contacts can be elongated or shortened in the axial direction of the insulating sleeve body (1), the first joint (2) is detachably connected to the inlet end of the insulating sleeve body (1), the first joint (2) includes a wiring terminal (21) and a closed conductive plate (22), the wiring terminal (21) is connected with the closed conductive plate (22).

2. The surge arrester valve sheet test device according to claim 1, characterized by The experimental cavity is a sealed cavity.

3. The surge arrester valve sheet test device according to claim 1, characterized by The side of the closed conductive plate (22) close to the experimental cavity is provided with a groove (23), the groove (23) is used for fixedly connecting the elastic contacts (5).

4. The surge arrester valve sheet testing device of claim 1, wherein, The conductive shell (3) is provided with a gas valve (32).

5. The surge arrester valve sheet testing device of claim 1, wherein, The insulating sleeve body (1) is a ceramic sleeve body.

6. The surge arrester valve sheet testing device of claim 1, wherein, The insulating gas (31) is SF6 gas.

Images