A high-voltage thyristor module AC-DC test switching and regulating device

Abstract

The utility model relates to thyristor technical field especially for a kind of high-voltage thyristor module ac-dc test switching regulation device, including base, the inside of the base is provided with switching mechanism, it is used to switch ac-dc power supply, the top of the base is fixedly connected with mounting seat, the outer wall of the base and at the mounting seat position close fixedly connected with module terminal stud, the top of the right side center of the base is fixedly connected with direct current terminal stud, the right side of the base and below direct current terminal stud fixedly connected with alternating current terminal stud, the front of the base is equipped with controller, by setting a kind of high-voltage thyristor module ac-dc test switching regulation device, switching ac-dc power supply using the switching mechanism in the device, solve the existing high-voltage thyristor module ac-dc test device when using, need to switch ac power supply and dc power supply to repeatedly test thyristor, switching operation needs manual operation, and the problem of low work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a high-voltage thyristor module AC / DC testing and switching adjustment device. Background Technology

[0002] AC / DC testing of high-voltage thyristor modules requires verification based on the module's characteristics, primarily including insulation performance, withstand voltage capability, and triggering function testing. For example, the thyristor test circuit provided in application number 201621280352.8 includes a second branch of capacitive reactance connected in parallel between the anode A and cathode K of thyristor Q1; the two ends of the second branch are coupled to the two ends of a first branch of inductive reactance to form an LC oscillation circuit; the first branch is connected in series with a DC voltage source and an on / off control switch to form a loop; and the gate of the thyristor is connected to a gate control device. This invention allows testing using a DC power supply, reducing the requirements for power supply voltage. During testing, there is no need to change the voltage and inductance value of the DC voltage source; the current rise rate is adjusted by regulating the charging time of the inductor, the capacitance and resistance of the second branch, etc., providing greater flexibility. This thyristor test circuit can be used not only to test the critical current rise rate during gate triggering but also to test the critical current rise rate triggered by forward or reverse overvoltage breakdown between the anode and cathode, making it more widely applicable.

[0003] However, the existing AC / DC testing devices for high-voltage thyristor modules still have shortcomings. Specifically, the existing AC / DC testing devices for high-voltage thyristor modules require switching between AC and DC power supplies to repeatedly test the thyristors. The switching operation needs to be performed manually, resulting in low work efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a high-voltage thyristor module AC / DC testing and switching adjustment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-voltage thyristor module AC / DC testing and switching adjustment device includes a base. The base has an internal switching mechanism for switching between AC and DC power supplies. A mounting base is fixedly connected to the top of the base. A module terminal block is fixedly connected to the outer wall of the base near the mounting base. A DC terminal block is fixedly connected above the center of the right side of the base. An AC terminal block is fixedly connected to the right side of the base below the DC terminal block. A controller is mounted on the front of the base, and a power plug is fixedly connected to the back of the base.

[0006] As a preferred embodiment of this utility model, the switching mechanism includes an isolation seat fixedly connected inside the base. A drive shaft is rotatably connected inside the isolation seat. A switching rod is fixedly connected to the outer wall of the drive shaft inside the isolation seat. A servo motor is fixedly connected to the outer wall of the base at a position corresponding to the drive shaft. A DC connector and an AC connector are respectively installed on the right side of the inner wall of the base, above and below the switching rod. Piston plates are slidably connected to the front and back sides of the center of the DC connector and the AC connector. A conductive clamp is fixedly connected to the outer wall of the piston plate. A return spring is fixedly connected to the outer wall of the piston plate at the end away from the conductive clamp. A guide tube is fixedly connected inside the DC connector and the AC connector near the piston plate. A miniature air pump is fixedly connected to the outer wall of the guide tube. A discharge rod is fixedly connected inside the base to the right side of the switching rod. A grounding wire is fixedly connected to the outer wall of the discharge rod at the end away from the switching rod.

[0007] As a preferred embodiment of this utility model, the base is made of insulating material, the interior of the base is filled with sulfur hexafluoride gas, and an arc-extinguishing grid is installed inside the base and below the switching mechanism.

[0008] Through the above technical solution, the long electric arc generated during AC / DC power switching is pulled into the arc-extinguishing grid under the action of electromagnetic force and divided into multiple short arc segments. The arc-extinguishing grid accelerates the cooling of the arc through thermal conductivity, shortens the arc deionization time, and each short arc forms a cathode voltage drop between the grids of the arc-extinguishing grid. When the total voltage exceeds the circuit voltage, the current cannot be maintained and the arc is extinguished. At the same time, the high insulation performance of sulfur hexafluoride gas can prevent arc breakdown.

[0009] As a preferred embodiment of this utility model, the mounting base is made of ABS plastic, and the top of the mounting base has a mounting slot. The controller is connected to the power plug by electrical connection.

[0010] As a preferred embodiment of this utility model, the isolation seat, DC connection seat, and AC connection seat are all made of insulating material. The DC connection seat and AC connection seat are both Y-shaped structures. The drive shaft passes through the isolation seat and extends into the base. The conductive clamp is connected to the DC terminal, the conductive clamp is connected to the AC terminal, and the switching rod is connected to the module terminal via wires.

[0011] As a preferred embodiment of this utility model, the switching rod, conductive clamp, discharge rod, and grounding wire are all made of copper. The grounding wire passes through and extends to the outside of the base. The guide tube has an L-shaped structure design. The drive shaft and servo motor, the reset spring and DC connector, and the reset spring and AC connector are all fixedly connected.

[0012] Through the above technical solution, the grounding wire and discharge rod can conduct the residual charge in the switching rod and thyristor to the ground, avoiding the residual charge from affecting the test results.

[0013] As a preferred embodiment of this utility model, the switching rod passes through and extends outside the isolation seat, and four sets of conductive clamps, piston plates, and micro air pumps are provided. The connection between the switching rod and the discharge rod is a sliding connection, and the connection between the servo motor, the micro air pump, and the controller is an electrical connection.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, a high-voltage thyristor module AC / DC testing switching and adjustment device is set up. The switching mechanism in this device switches between AC and DC power supplies. When performing DC testing, the controller starts a servo motor, which drives a switching rod upwards via a drive shaft. The upwardly rotating switching rod inserts into the DC connector. The controller then starts a miniature air pump inside the DC connector. The miniature air pump delivers external gas into the DC connector through a guide tube. The gas entering the DC connector pushes a piston plate and a conductive clamp outwards. The outwardly moving conductive clamp clamps the switching rod. The thyristor module is connected to the DC power supply via module terminals, the switching rod, the conductive clamp, and the DC terminals. The DC power supply powers the thyristor module, and the thyristor module begins DC testing. When performing AC testing, the miniature air pump extracts gas from the DC connector through the guide tube. The reset spring pulls the piston plate and conductive clamp inward, causing the conductive clamp to release its grip on the switching rod. The thyristor module is then disconnected from the DC power supply. The downward-rotating switching rod inserts into the AC connector. The controller activates the miniature air pump within the AC connector, which delivers external gas into the connector via a guide tube. This gas pushes the piston plate and conductive clamp outward, causing the outward-moving conductive clamp to grip the switching rod. The thyristor module is then connected to the AC power supply via the module terminals, the switching rod, the conductive clamp, and the AC terminals. The AC power supply powers the thyristor module, initiating AC testing. The system automatically switches between AC and DC power, solving the problem of existing high-voltage thyristor module AC / DC testing devices requiring manual switching between AC and DC power for repeated thyristor testing, resulting in low efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a top cross-sectional view of the DC connector of this utility model; Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0016] In the diagram: 1. Base; 2. Switching mechanism; 3. Mounting base; 4. Module terminal; 5. DC terminal; 6. AC terminal; 7. Controller; 8. Power plug; 201. Isolation base; 202. Drive shaft; 203. Switching tube; 204. Servo motor; 205. DC connector; 206. AC connector; 207. Piston plate; 208. Conductive clamp; 209. Return spring; 210. Guide tube; 211. Miniature air pump; 212. Discharge rod; 213. Grounding wire. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0019] For examples, please refer to Figures 1-4 This utility model provides a technical solution: A high-voltage thyristor module AC / DC testing and switching adjustment device includes a base 1, a switching mechanism 2 inside the base 1 for switching AC / DC power supplies, a mounting base 3 fixedly connected to the top of the base 1, a module terminal 4 fixedly connected to the outer wall of the base 1 near the mounting base 3, a DC terminal 5 fixedly connected above the center of the right side of the base 1, an AC terminal 6 fixedly connected to the right side of the base 1 below the DC terminal 5, a controller 7 mounted on the front of the base 1, and a power plug 8 fixedly connected to the back of the base 1.

[0020] The base 1 is made of insulating material and filled with sulfur hexafluoride gas. An arc-extinguishing grid is installed inside the base 1 and below the switching mechanism 2. When the AC / DC power supply is switched, the long arc generated is pulled into the arc-extinguishing grid under the action of electromagnetic force and is divided into multiple short arc segments. The arc-extinguishing grid accelerates the cooling of the arc through thermal conductivity and shortens the arc deionization time. Each short arc forms a cathode voltage drop between the grids of the arc-extinguishing grid. When the total voltage exceeds the circuit voltage, the current cannot be maintained and the arc is extinguished. At the same time, the high insulation performance of sulfur hexafluoride gas can prevent arc breakdown.

[0021] The mounting base 3 is made of ABS plastic, and the top of the mounting base 3 has a mounting slot. The controller 7 is connected to the power plug 8 by electrical connection.

[0022] In this embodiment, reference Figure 2 and Figure 3 The switching mechanism 2 includes an isolation seat 201 fixedly connected inside the base 1. A drive shaft 202 is rotatably connected inside the isolation seat 201. A switching rod 203 is fixedly connected to the outer wall of the drive shaft 202 and inside the isolation seat 201. A servo motor 204 is fixedly connected to the outer wall of the base 1 at a corresponding position on the drive shaft 202. A DC connector 205 and an AC connector 206 are respectively installed on the right side of the inner wall of the base 1, above and below the switching rod 203. Piston plates are slidably connected to the front and back of the center of the DC connector 205 and the AC connector 206. 207. A conductive clamp 208 is fixedly connected to the outer wall of the piston plate 207. A reset spring 209 is fixedly connected to the outer wall of the piston plate 207 at the end away from the conductive clamp 208. A guide tube 210 is fixedly connected inside the DC connector 205 and the AC connector 206 at a position near the piston plate 207. A miniature air pump 211 is fixedly connected to the outer wall of the guide tube 210. A discharge rod 212 is fixedly connected inside the base 1 at the right side of the switching rod 203. A grounding wire 213 is fixedly connected to the outer wall of the discharge rod 212 at the end away from the switching rod 203.

[0023] The isolating seat 201, DC connector 205 and AC connector 206 are all made of insulating material. The DC connector 205 and AC connector 206 are both Y-shaped structures. The drive shaft 202 passes through the isolating seat 201 and extends into the base 1. The conductive clamp 208 is connected to the DC terminal 5, the conductive clamp 208 is connected to the AC terminal 6, and the switching rod 203 is connected to the module terminal 4 through wires.

[0024] The switching rod 203, conductive clamp 208, discharge rod 212, and grounding wire 213 are all made of copper. The grounding wire 213 runs through and extends to the outside of the base 1. The grounding wire 213 and the discharge rod 212 can conduct the residual charge in the switching rod 203 and the high-voltage thyristor to the ground, so as to avoid the residual charge from affecting the test results. The guide tube 210 has an L-shaped structure design. The drive shaft 202 and the servo motor 204, the reset spring 209 and the DC connector 205, and the reset spring 209 and the AC connector 206 are all fixedly connected.

[0025] The switching rod 203 extends through and out of the isolation seat 201. The conductive clamp 208, piston plate 207 and micro air pump 211 are each provided in four sets. The switching rod 203 and the discharge rod 212 are connected by a sliding connection. The servo motor 204, the micro air pump 211 and the controller 7 are all connected by an electrical connection.

[0026] The working process of this utility model is as follows: When the high voltage thyristor module AC / DC test switching adjustment device designed in this scheme is running, the thyristor module is installed on the mounting base 3, the thyristor module is connected to the module terminal 4 with wires, and then the DC terminal 5 and AC terminal 6 are connected to the AC power supply and DC power supply respectively with wires. When performing DC testing, the controller 7 starts the servo motor 204. The servo motor 204 drives the switching rod 203 to rotate upward through the drive shaft 202. The upwardly rotating switching rod 203 is inserted into the DC connector 205. The controller 7 starts the miniature air pump 211 in the DC connector 205. The miniature air pump 211 sends external gas into the DC connector 205 through the guide tube 210. The gas entering the DC connector 205 pushes the piston plate 207 and the conductive clamp 208 to move outward. The outwardly moving conductive clamp 208 in the DC connector 205 clamps the switching rod 203. The thyristor module is connected to the DC power supply through the module terminal 4, the switching rod 203, the conductive clamp 208, and the DC terminal 5. The DC power supply supplies power to the thyristor module, and the thyristor module begins DC testing. During AC testing, the miniature air pump 211 extracts gas from the DC connector 205 through the guide tube 210. The reset spring 209 of the DC connector 205 pulls the piston plate 207 and the conductive clamp 208 inward. The conductive clamp 208 no longer clamps the switching rod 203, and the thyristor module is disconnected from the DC power supply. The servo motor 204 drives the switching rod 203 to rotate downward through the drive shaft 202. The upward-rotating switching rod 203 inserts into the discharge rod 212. The discharge rod 212 and the grounding wire 213 discharge the residual charge in the thyristor. After the residual charge is discharged, the servo motor 204 drives the switching rod 203 to continue rotating downward through the drive shaft 202. The switching lever 203, which rotates downwards, is inserted into the AC connector 206. The controller 7 starts the miniature air pump 211 inside the AC connector 206. The miniature air pump 211 sends external gas into the AC connector 206 through the guide tube 210. The gas entering the AC connector 206 pushes the piston plate 207 and the conductive clamp 208 to move outwards. The conductive clamp 208, which moves outwards inside the AC connector 206, clamps the switching lever 203. The thyristor module is connected to the AC power supply through the module terminal 4, the switching lever 203, the conductive clamp 208, and the AC terminal 6. The AC power supply supplies power to the thyristor module, and the thyristor module begins AC testing. After the test is completed, the servo motor 204 drives the switching rod 203 to rotate upward through the drive shaft 202. The upward rotating switching rod 203 disengages from the AC connector 206. When the AC connector 206 is disconnected from the switching rod 203, the long arc generated is pulled into the arc-extinguishing grid under the action of electromagnetic force and is divided into multiple short arc segments. The arc-extinguishing grid accelerates the cooling of the arc through thermal conductivity, shortening the arc deionization time. Each short arc forms a cathode voltage drop between the grids of the arc-extinguishing grid. When the total voltage exceeds the circuit voltage, the current cannot be maintained, and the arc is extinguished. At the same time, the high insulation performance of sulfur hexafluoride gas can prevent arc breakdown. The upward rotating switching rod 203 re-contacts the discharge rod 212, and the discharge rod 212 and the grounding wire 213 discharge the residual charge in the thyristor.

[0027] The controller 7, power plug 8, servo motor 204, and miniature air pump 211 used in this utility model are all existing known electrical devices, and all can be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the controller 7, power plug 8, servo motor 204, and miniature air pump 211 will not be described in detail here.

[0028] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage thyristor module AC / DC testing and switching adjustment device, comprising a base (1), characterized in that: The base (1) is provided with a switching mechanism (2) for switching AC and DC power. The top of the base (1) is fixedly connected to a mounting base (3). The outer wall of the base (1) and near the mounting base (3) are fixedly connected to a module terminal (4). The center of the right side of the base (1) is fixedly connected to a DC terminal (5). The right side of the base (1) and below the DC terminal (5) are fixedly connected to an AC terminal (6). The front of the base (1) is equipped with a controller (7). The back of the base (1) is fixedly connected to a power plug (8).

2. The AC / DC testing and switching adjustment device for a high-voltage thyristor module according to claim 1, characterized in that: The switching mechanism (2) includes an isolation seat (201) fixedly connected inside the base (1). A drive shaft (202) is rotatably connected inside the isolation seat (201). A switching rod (203) is fixedly connected to the outer wall of the drive shaft (202) and inside the isolation seat (201). A servo motor (204) is fixedly connected to the outer wall of the base (1) at the corresponding position of the drive shaft (202). A DC connector (205) and an AC connector (206) are respectively installed on the right side of the inner wall of the base (1) above and below the switching rod (203). Piston plates are slidably connected to the front and back sides of the center of the DC connector (205) and the AC connector (206). 207), a conductive clamp (208) is fixedly connected to the outer wall of the piston plate (207), a return spring (209) is fixedly connected to the outer wall of the piston plate (207) at the end away from the conductive clamp (208), a guide tube (210) is fixedly connected inside the DC connector (205) and AC connector (206) at the position near the piston plate (207), a micro air pump (211) is fixedly connected to the outer wall of the guide tube (210), a discharge rod (212) is fixedly connected inside the base (1) at the right side of the switching rod (203), and a grounding wire (213) is fixedly connected to the outer wall of the discharge rod (212) at the end away from the switching rod (203).

3. The AC / DC testing and switching adjustment device for a high-voltage thyristor module according to claim 1, characterized in that: The base (1) is made of insulating material and is filled with sulfur hexafluoride gas. An arc-extinguishing grid is installed inside the base (1) and below the switching mechanism (2).

4. The AC / DC testing and switching adjustment device for a high-voltage thyristor module according to claim 1, characterized in that: The mounting base (3) is made of ABS plastic, and the top of the mounting base (3) has a mounting slot. The controller (7) is connected to the power plug (8) by electrical connection.

5. The AC / DC testing and switching adjustment device for a high-voltage thyristor module according to claim 2, characterized in that: The isolation seat (201), DC connector (205) and AC connector (206) are all made of insulating material. The DC connector (205) and AC connector (206) are both Y-shaped structures. The drive shaft (202) passes through the isolation seat (201) and extends into the base (1). The conductive clamp (208) is connected to the DC terminal (5), the conductive clamp (208) is connected to the AC terminal (6), and the switching rod (203) is connected to the module terminal (4) by wires.

6. The AC / DC testing and switching adjustment device for a high-voltage thyristor module according to claim 2, characterized in that: The switching rod (203), conductive clamp (208), discharge rod (212) and grounding wire (213) are all made of copper. The grounding wire (213) passes through and extends to the outside of the base (1). The guide tube (210) has an L-shaped structure design. The drive shaft (202) and servo motor (204), the reset spring (209) and DC connector (205), and the reset spring (209) and AC connector (206) are all fixedly connected.

7. The AC / DC testing and switching adjustment device for a high-voltage thyristor module according to claim 2, characterized in that: The switching rod (203) extends through and beyond the isolation seat (201). The conductive clamp (208), piston plate (207), and micro air pump (211) are each provided in four sets. The connection between the switching rod (203) and the discharge rod (212) is a sliding connection. The connection between the servo motor (204), the micro air pump (211), and the controller (7) is an electrical connection.

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