Air discharge gap test equipment

Abstract

The utility model relates to air discharge gap test equipment, which comprises an upper electrode and a lower electrode, the upper electrode is connected with external high-voltage energy storage equipment, an upper fixed ball is arranged on the upper electrode, a lower fixed ball is arranged on the lower electrode, a conductive rod is inserted into the lower fixed ball, a lifting mechanism is arranged on the lower electrode, and the lifting mechanism is connected with the upper fixed ball. The discharge gap can be accurately regulated and controlled through the upper electrode, the lower electrode, the upper fixed ball, the lower fixed ball, the conductive rod and the lifting mechanism, the height of the conductive rod 5 can be flexibly adjusted, the lower fixed ball 4 is kept fixed, the problems of stretching and retracting of a woven copper strip caused by movement of a movable ball in traditional equipment can be solved, and the discharge gap can be accurately regulated and controlled. Therefore, the braided copper strip connected to the lower fixed ball is more stable and is not easy to loosen and fall off, and long-term and stable operation of equipment is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of impulse generator test equipment, and in particular to an air discharge gap test equipment. Background Art

[0002] The impulse generator uses the working principle of slow charging and fast discharge of capacitors, releasing the energy stored in the capacitor instantly to simulate the lightning strike process. The voltage of the capacitor after charging is high, reaching hundreds of thousands of volts, so there are requirements for the insulation and current carrying capacity of the capacitor discharge switch.

[0003] At present, most discharge switches use a double-ball combination of air discharge gaps, which have the advantages of low cost and high trigger success rate. The double-ball mode consists of a moving ball and a fixed ball. When working, the moving ball and the fixed ball are first separated by a large distance to ensure that the air gap will not self-break down after the capacitor is fully charged; when discharge is required, the moving ball quickly approaches the fixed ball, and the air gap decreases as the distance between the two balls decreases, and eventually breakdown occurs and the capacitor is discharged.

[0004] However, in actual operation, since the moving ball is connected to the external fixed conductive bar with a braided copper belt, the braided copper belt stretches and retracts when the moving ball moves. As the number of uses increases, the braided copper belt is prone to loosening and falling off, which is not conducive to the long-term and stable operation of the equipment.

[0005] In view of the above problems, an air discharge gap test equipment is now designed. Utility Model Content

[0006] The embodiment of the present application provides an air discharge gap test device to solve the problem in the related art that since the moving ball is connected to the external fixed conductive bar by a braided copper belt, as the number of uses increases, the braided copper belt is easy to loosen and fall off, which is not conducive to the long-term stable operation of the equipment.

[0007] In a first aspect, an air discharge gap test device is provided, comprising:

[0008] An upper electrode and a lower electrode, wherein the upper electrode is connected to an external high-voltage energy storage device, an upper fixed ball is arranged on the upper electrode, a lower fixed ball is arranged on the lower electrode, a conductive rod is inserted on the lower fixed ball, and a lifting mechanism is arranged on the lower electrode, wherein the lifting mechanism is connected to the conductive rod and is used to drive the conductive rod to approach or move away from the upper fixed ball.

[0009] In some embodiments, the upper fixed ball and the lower fixed ball are arranged opposite to each other, and a grounding wire is arranged on the lower fixed ball.

[0010] In some embodiments, a through hole adapted to the conductive rod is formed on the lower fixed ball, the conductive rod is slidably disposed inside the through hole, and the bottom end of the conductive rod extends downward.

[0011] In some embodiments, the lifting mechanism includes a cylinder, a base and a connecting head, the base is arranged on the lower electrode, the cylinder is arranged above the lower electrode, the connecting head is connected to the top end of the cylinder piston rod, and the top of the connecting head is connected to the bottom end of the conductive rod.

[0012] In some embodiments, a plurality of fixing rods are further included, wherein the fixing rods are arranged in a ring shape on the lower electrode, and the lower fixing ball is arranged between the tops of the fixing rods;

[0013] The lifting mechanism is located in the middle of a plurality of fixing rods.

[0014] In some embodiments, a plurality of pillars are further included, wherein the plurality of pillars are disposed between the upper electrode and the lower electrode and are distributed in a ring shape, and the pillars are insulating pillars.

[0015] In some embodiments, the conductive rod may be a copper rod or a graphite rod, and the upper fixed ball and the lower fixed ball may be conductive metal balls or graphite balls.

[0016] The embodiment of the present application provides an air discharge gap test equipment, which can realize precise control of the discharge gap through the upper electrode, the lower electrode, the upper fixed ball, the lower fixed ball, the conductive rod and the lifting mechanism, thereby improving the accuracy and reliability of the test. The height of the conductive rod 5 can be flexibly adjusted, while the lower fixed ball 4 remains fixed, which can avoid the stretching and retraction problems of the braided copper belt caused by the movement of the moving ball in traditional equipment, so that the braided copper belt connected to the lower fixed ball is more stable and not easy to loosen or fall off, which greatly enhances the stability and durability of the equipment and ensures that the equipment can operate stably and for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of a three-dimensional structure provided in an embodiment of the present application;

[0019] Figure 2 A front cross-sectional view provided for an embodiment of the present application;

[0020] In the figure: 1. upper electrode; 2. lower electrode; 3. upper fixed ball; 4. lower fixed ball; 5. conductive rod; 6. lifting mechanism; 61. cylinder; 62. base; 63. connector; 7. fixing rod; 8. support; 9. grounding wire. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] The embodiment of the present application provides an air discharge gap test device, which can solve the problem in the related art that since the moving ball is connected to the external fixed conductive bar by a braided copper belt, as the number of uses increases, the braided copper belt is easy to loosen and fall off, which is not conducive to the long-term stable operation of the equipment.

[0023] See also Figure 1-Figure 2 , an air discharge gap test device comprises;

[0024] An upper electrode 1 and a lower electrode 2, wherein the upper electrode 1 is connected to an external high-voltage energy storage device, an upper fixed ball 3 is arranged on the upper electrode 1, a lower fixed ball 4 is arranged on the lower electrode 2, a conductive rod 5 is inserted on the lower fixed ball 4, and a lifting mechanism 6 is arranged on the lower electrode 2, wherein the lifting mechanism 6 is connected to the conductive rod 5 and is used to drive the conductive rod 5 to approach or move away from the upper fixed ball 3, wherein the upper fixed ball 3 is fixed to the upper electrode by bolts

[0025] An upper fixed ball 3 is arranged on the upper electrode 1, and the upper fixed ball is firmly fixed on the upper electrode by bolts to ensure that its position remains stable during the discharge process. A lower fixed ball 4 is arranged on the lower electrode 2, and a conductive rod 5 is inserted into the lower fixed ball 4. The function of the conductive rod 5 is to serve as a conductive channel between the lower electrode 2 and the lower fixed ball 4 to ensure that the current can flow smoothly during discharge.

[0026] In actual operation, first, the upper electrode 1 is connected to an external high-voltage energy storage device to store high-voltage electrical energy. When the energy storage device is fully charged, the upper electrode 1 carries a high-voltage charge and is ready for discharge operation.

[0027] In order to adjust the discharge gap between the upper fixed ball 3 and the lower fixed ball 4, a lifting mechanism 6 is provided on the lower electrode 2. The lifting mechanism 6 is connected to the conductive rod 5, and can drive the conductive rod 5 and the lower fixed ball 4 to approach or move away from the upper fixed ball 3 through mechanical action. When the discharge gap needs to be increased, the lifting mechanism 6 drives the conductive rod 5 and the lower fixed ball 4 away from the upper fixed ball 3; conversely, when the discharge gap needs to be reduced, they are driven close to the upper fixed ball 3. During the discharge process, when the high-voltage charge on the upper electrode 1 reaches a certain level and the discharge gap between the upper fixed ball 3 and the lower fixed ball 4 is small enough, the air gap will be broken down to form a discharge channel. At this time, the electric energy stored in the upper electrode 1 will be released instantly and flow through the discharge channel to simulate the lightning strike process.

[0028] By observing and measuring parameters such as voltage and current during the discharge process, the discharge characteristics under different discharge gaps can be studied, providing data support for related research and applications.

[0029] The air discharge gap test equipment realizes precise control and adjustment of the discharge gap through the working principles of capacitor energy storage, rapid discharge and air gap breakdown, providing an effective tool for the study of air discharge characteristics. By adjusting the height of the conductive rod 5, the lower fixed ball 4 does not move, and the braided copper connected to the lower fixed ball does not loosen or fall off easily, which is conducive to the long-term and stable operation of the equipment.

[0030] The air discharge gap test equipment cleverly combines the working principles of capacitor energy storage, rapid discharge and air gap breakdown, thereby achieving precise control of the discharge gap and improving the accuracy and reliability of the test. The height of the conductive rod 5 can be flexibly adjusted while the lower fixed ball 4 remains fixed, thereby avoiding the stretching and retraction of the braided copper belt caused by the movement of the moving ball in traditional equipment, making the braided copper belt connected to the lower fixed ball more stable and not easy to loosen or fall off, greatly enhancing the stability and durability of the equipment and ensuring the long-term and stable operation of the equipment.

[0031] It should be noted that the external high-voltage energy storage device is a device for storing high-voltage electrical energy. This device is usually able to accumulate a large amount of electrical energy and release it quickly when needed to provide high voltage and high current. In the air discharge gap test equipment, the main function of the external high-voltage energy storage device is to provide the required high-voltage charge for the upper electrode in order to conduct the discharge test.

[0032] Specifically, the external high-voltage energy storage device may include a capacitor bank, a charging circuit, a control unit, and other parts. The capacitor bank is responsible for storing electrical energy, the charging circuit is used to charge the electrical energy into the capacitor, and the control unit is responsible for monitoring and controlling the entire charging process to ensure that the capacitor can store electrical energy safely and effectively. Before the discharge test begins, the external high-voltage energy storage device will first charge the capacitor to the required voltage level. This is a prior art and will not be described in detail here.

[0033] Specifically, in this embodiment, the upper fixing ball 3 and the lower fixing ball 4 are arranged opposite to each other, and a grounding wire 9 is arranged on the lower fixing ball 4, wherein the grounding wire 9 is a copper busbar grounding wire.

[0034] The upper fixed ball 3 and the lower fixed ball 4 are arranged opposite to each other. Such an arrangement is to ensure that a clear and controllable discharge gap can be formed between them.

[0035] Specifically, the lower fixed ball 4 in this embodiment is provided with a through hole matched with the conductive rod 5 , the conductive rod 5 is slidably arranged inside the through hole, and the bottom end of the conductive rod 5 extends downward.

[0036] A grounding wire 9 is provided on the lower fixed ball 4, and the grounding wire 9 is a copper bar grounding wire. As a high-quality conductive material, the copper bar has the characteristics of excellent conductivity, corrosion resistance, and high mechanical strength, and is very suitable for the production of grounding wires. Through the copper bar grounding wire, the lower fixed ball 4 can be effectively connected to the earth, ensuring that the charge can be quickly and safely introduced into the earth during the discharge process, avoiding damage to the equipment caused by charge accumulation.

[0037] Preferably, the lifting mechanism 6 in this embodiment includes a cylinder 61, a base 62 and a connecting head 63, the base 62 is arranged on the lower electrode 2, the cylinder 61 is arranged above the lower electrode 2, the connecting head 63 is connected to the top end of the piston rod of the cylinder 61, and the top of the connecting head 63 is connected to the bottom end of the conductive rod 5, wherein the base 62 and the connecting head 63 are both made of insulating materials.

[0038] In the embodiment, the cylinder 61 drives the conductive rod 5 and the lower fixed ball 4 to move closer to or away from the upper fixed ball 3 to precisely control the size of the discharge gap.

[0039] The cylinder 61 is arranged above the lower electrode 2 as the main power source. By controlling the extension and retraction of the piston rod of the cylinder 61, the lifting and lowering action of the lifting mechanism 6 can be realized. The base 62 is firmly arranged on the lower electrode 2 to provide stable support for the entire lifting mechanism 6. At the same time, the base 62 is made of insulating material to ensure the electrical insulation between the lifting mechanism 6 and the lower electrode 2, avoid the current flowing into the ground through the base 62, and ensure the safe operation of the equipment.

[0040] The connector 63 acts as a bridge between the piston rod of the cylinder 61 and the conductive rod 5. One end of the connector is connected to the top of the piston rod of the cylinder 61, and the other end is connected to the bottom of the conductive rod 5. In this way, when the piston rod of the cylinder 61 is extended or retracted, the connector 63 will drive the conductive rod 5 to move together, thereby adjusting the discharge gap. Similarly, the connector 63 is also made of insulating material to ensure its electrical insulation performance during operation.

[0041] In another embodiment, a mounting hole is provided on the lower electrode 2 , and the base 62 is connected to an external supporting mechanism, thereby supporting the cylinder 61 , the connector 63 and the conductive rod 5 , and achieving the purpose of insulating the cylinder 61 .

[0042] It should be noted that the present embodiment also includes a plurality of fixed rods 7, which are arranged in a ring shape on the lower electrode 2, and the lower fixed ball 4 is arranged between the tops of the plurality of fixed rods 7. The fixed rod 7 is a conductive metal rod, and the lower fixed ball 4 is inserted into the tops of the plurality of fixed rods 7, and the lifting mechanism 6 is located in the middle of the plurality of fixed rods 7.

[0043] In the embodiment, in order to enhance the stability and structural strength of the device, a number of fixing rods 7 are added. These fixing rods 7 are arranged in a ring shape on the lower electrode 2 to form a stable support structure. Their presence not only provides additional support for the lower fixed ball 4, but also ensures the stability of the entire device during operation.

[0044] It can be understood that the grounding wire 9 in this embodiment can also be set on the lower electrode 2. Through the sequence of the conductive rod 5, the lower fixing ball 4, the fixing rod 7 and the lower electrode 2, the lower fixing ball 4 can be effectively connected to the ground, ensuring that the charge can be quickly and safely introduced into the ground during the discharge process, avoiding damage to the equipment due to charge accumulation.

[0045] Preferably, the present embodiment further includes a plurality of pillars 8 , which are arranged between the upper electrode 1 and the lower electrode 2 , and are distributed in a ring shape, and the pillars 8 are insulating pillars.

[0046] In order to further enhance the stability and safety of the device, several pillars 8 are specially added. These pillars 8 are carefully arranged between the upper electrode 1 and the lower electrode 2 to form a stable support structure. These pillars 8 are distributed in a ring shape. Such a layout not only enhances the overall stability of the device, but also helps to evenly distribute the space between the upper electrode 1 and the lower electrode 2, preventing damage to the device due to local stress concentration.

[0047] The support column 8 is designed as an insulating column with excellent electrical insulation performance, ensuring that the support column 8 will not interfere with or affect the electrical performance of the discharge test while supporting the electrode.

[0048] It should be noted that the insulating column is also called an insulator or insulating spacer. It mainly plays the role of fixed support, connection and insulation. The materials of the insulating column are varied, mainly including various plastics, glass fiber, etc. Common materials include fiberglass, silicone rubber, polyethylene, etc.

[0049] Preferably, the conductive rod 5 in this embodiment can be a copper rod or a graphite rod, and the upper fixed ball 3 and the lower fixed ball 4 are both conductive metal balls or graphite balls.

[0050] In this embodiment, the conductive rod 5 can be made of copper or graphite. Copper, as a commonly used conductive metal material, has good conductivity and stability and can meet the needs of most discharge tests. At the same time, the price of copper is relatively moderate, so the equipment cost is controlled.

[0051] The upper fixed ball 3 and the lower fixed ball 4, as important components of the discharge gap, also need to be made of metal materials with good electrical conductivity. In the implementation scheme, they are all designed as conductive metal balls. Commonly used conductive metal materials such as copper, silver, gold, aluminum, etc. can be used as alternative materials. According to actual needs and equipment cost considerations, suitable metal materials can be selected to make the fixed balls.

[0052] In some special cases, such as when the impulse current amplitude is large or the energy stored in the main capacitor is large, the performance requirements for the conductive material will be higher. At this time, graphite, as an alternative material, can play its unique advantages. Graphite has excellent high temperature and high voltage resistance, and can maintain stable conductivity under extreme conditions. In addition, graphite also has a low resistivity, which can ensure the energy transmission efficiency during the discharge test.

[0053] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0054] It should be noted that, in this application, relational terms such as "first" and "second" are only used 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0055] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An air discharge gap test equipment, characterized in that: include: An upper electrode (1) and a lower electrode (2), wherein the upper electrode (1) is connected to an external high-voltage energy storage device, an upper fixed ball (3) is arranged on the upper electrode (1), a lower fixed ball (4) is arranged on the lower electrode (2), a conductive rod (5) is inserted into the lower fixed ball (4), and a lifting mechanism (6) is arranged on the lower electrode (2), wherein the lifting mechanism (6) is connected to the conductive rod (5) and is used to drive the conductive rod (5) to approach or move away from the upper fixed ball (3).

2. An air discharge gap test device as claimed in claim 1, characterized in that: The upper fixed ball (3) and the lower fixed ball (4) are arranged opposite to each other, and a grounding wire (9) is arranged on the lower fixed ball (4).

3. An air discharge gap test device as claimed in claim 1, characterized in that: The lower fixed ball (4) is provided with a through hole matched with the conductive rod (5), the conductive rod (5) is slidably arranged inside the through hole, and the bottom end of the conductive rod (5) extends downward.

4. An air discharge gap test device as claimed in claim 1, characterized in that: The lifting mechanism (6) comprises a cylinder (61), a base (62) and a connector (63), wherein the base (62) is arranged on the lower electrode (2), the cylinder (61) is arranged above the lower electrode (2), the connector (63) is connected to the top end of the piston rod of the cylinder (61), and the top of the connector (63) is connected to the bottom end of the conductive rod (5).

5. The air discharge gap test equipment according to claim 1, characterized in that: It also comprises a plurality of fixing rods (7), wherein the plurality of fixing rods (7) are arranged in a ring shape on the lower electrode (2), and the lower fixing ball (4) is arranged between the tops of the plurality of fixing rods (7); The lifting mechanism (6) is located in the middle of a plurality of fixing rods (7).

6. An air discharge gap test device as claimed in claim 1, characterized in that: It also comprises a plurality of pillars (8), wherein the plurality of pillars (8) are arranged between the upper electrode (1) and the lower electrode (2), and the plurality of pillars (8) are distributed in a ring shape, and the pillars (8) are insulating pillars.

7. An air discharge gap test device as claimed in claim 1, characterized in that: The conductive rod (5) may be a copper rod or a graphite rod, and the upper fixed ball (3) and the lower fixed ball (4) are both conductive metal balls or graphite balls.

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