An isolated and anti-interference thyristor driving device

Abstract

The utility model relates to the technical field of electrical components, and in particular to an isolated and anti-interference thyristor driving device, comprising a thyristor driving module and a heat dissipation component, wherein the heat dissipation component comprises a mounting seat, a bracket, heat dissipation fins, two rotating shafts, two fan blades, a motor, a driving gear and two driven gears; the heat dissipation fins absorb and discharge the heat generated by the thyristor driving module during operation, thereby reducing the heat of the thyristor driving module; at the same time, the motor drives the driving gear to rotate, the driving gear drives the two driven gears to rotate, the two driven gears drive the two rotating shafts to rotate, the rotating shaft drives the fan blades to rotate, so that the two fan blades rotate at the same time, and the heat dissipation fins are blown to dissipate heat, so that the hot air can be quickly discharged, thereby improving the heat dissipation effect of the thyristor driving module, and avoiding the product failure caused by excessive temperature affecting the stability of product performance.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical components, in particular to an isolated and anti-interference silicon controlled rectifier driving device. Background Art

[0002] Thyristor is a high-power electrical component, also known as thyristor. It has the advantages of small size, high efficiency and long life. In automatic control systems, it can be used as a high-power driver to control high-power equipment with low-power controls. It has also been widely used in AC and DC motor speed control systems, power regulation systems and follow-up systems.

[0003] When in use, the thyristor needs to be triggered by a thyristor driving module, and the thyristor driving module generally dissipates heat through a heat sink.

[0004] However, in the above manner, the thyristor drive module only uses a heat sink for heat dissipation, which has poor heat dissipation performance and is prone to cause product failures and affect the stability of product performance. Summary of the invention

[0005] The utility model aims to provide an isolated and anti-interference thyristor driving device, which can improve the heat dissipation effect of the thyristor driving module and avoid product failure caused by excessive temperature and affect the stability of product performance.

[0006] To achieve the above object, the utility model provides an isolated and anti-interference thyristor drive device, including a thyristor drive module and a heat dissipation component, wherein the heat dissipation component includes a mounting seat, a bracket, a heat dissipation fin, two rotating shafts, two fan blades, a motor, a driving gear and two driven gears;

[0007] The bracket is fixedly connected to the mounting base and is located on the top of the mounting base; the heat dissipation fin is fixedly connected to the bracket and is located on the top of the bracket; the two rotating shafts are respectively rotatably connected to the mounting base and are respectively located inside the mounting base; the two fan blades are respectively fixedly connected to the two rotating shafts and are respectively located on the top of the two rotating shafts; the motor is fixedly connected to the mounting base and is located inside the mounting base; the driving gear is fixedly connected to the output end of the motor and is located on the top of the motor; the two driven gears are respectively fixedly connected to the two rotating shafts and are respectively meshed with the driving gear; the thyristor drive module is arranged on the top of the heat dissipation fin.

[0008] Wherein, the heat dissipation component also includes two filters; the two filters are respectively slidably connected to the mounting seat and are located on both sides of the mounting seat.

[0009] Among them, the thyristor driving module includes a MOS tube, a high-frequency isolation transformer and a Schottky diode; the MOS tube is arranged on the top of the heat sink fin, the high-frequency isolation transformer is arranged on the top of the heat sink fin, and the Schottky diode is arranged on the top of the heat sink fin.

[0010] Wherein, the isolated and anti-interference thyristor driving device also includes a plurality of fixing components; the plurality of fixing components are respectively arranged on the mounting seat.

[0011] Wherein, the fixing assembly comprises a sliding rod and a baffle; the sliding rod is slidably connected to the mounting seat and is located at a side of the mounting seat; the baffle is fixedly connected to the sliding rod and is located at a side of the sliding rod.

[0012] Wherein, the fixing assembly further comprises a spring; one end of the spring is fixedly connected to the mounting seat, and the other end of the spring is fixedly connected to the sliding rod and is located between the mounting seat and the sliding rod.

[0013] The utility model discloses an isolated and anti-interference thyristor driving device, wherein the heat dissipation fins absorb and discharge the heat generated by the thyristor driving module when it is running, thereby reducing the heat of the thyristor driving module; at the same time, the motor drives the driving gear to rotate, the driving gear drives the two driven gears to rotate, the two driven gears drive the two rotating shafts to rotate, and the rotating shaft drives the fan blades to rotate, so that the two fan blades rotate at the same time, and the heat dissipation fins are blown to dissipate heat, so that the hot air can be quickly discharged, thereby improving the heat dissipation effect of the thyristor driving module, and avoiding product failure due to excessive temperature affecting the stability of product performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0016] Figure 2 It is a front cross-sectional view of the entire first embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0018] Figure 4 It is a side cross-sectional view of the entire second embodiment of the utility model.

[0019] 101- thyristor drive module, 102- heat dissipation component, 103- mounting base, 104- bracket, 105- heat dissipation fins, 106- shaft, 107- fan blades, 108- motor, 109- driving gear, 110- driven gear, 111- filter, 112- MOS tube, 113- high frequency isolation transformer, 114- Schottky diode, 201- fixing component, 202- slide rod, 203- baffle, 204- spring. DETAILED DESCRIPTION

[0020] The first embodiment of the present application is:

[0021] See also Figure 1-Figure 2 ,in, Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 It is a front cross-sectional view of the entire first embodiment of the utility model.

[0022] The utility model provides an isolated and anti-interference thyristor driving device, comprising a thyristor driving module 101 and a heat dissipation component 102, wherein the heat dissipation component 102 comprises a mounting seat 103, a bracket 104, a heat dissipation fin 105, two rotating shafts 106, two fan blades 107, a motor 108, a driving gear 109, two driven gears 110 and two filters 111; the thyristor driving module 101 comprises a MOS tube 112, a high-frequency isolation transformer 113 and a Schottky diode 114; the above-mentioned scheme can improve the heat dissipation effect of the thyristor driving module 101, and avoid product failure caused by excessive temperature to affect the stability of product performance.

[0023] According to this specific implementation, the thyristor driving module 101 is used to trigger the thyristor.

[0024] Among them, the bracket 104 is fixedly connected to the mounting base 103 and is located at the top of the mounting base 103; the heat dissipation fin 105 is fixedly connected to the bracket 104 and is located at the top of the bracket 104; the two rotating shafts 106 are respectively rotatably connected to the mounting base 103 and are respectively located inside the mounting base 103; the two fan blades 107 are respectively fixedly connected to the two rotating shafts 106 and are respectively located at the top of the two rotating shafts 106; the motor 108 is fixedly connected to the mounting base 103 and is located inside the mounting base 103; the driving gear 109 is fixedly connected to the output end of the motor 108 and is located at the top of the motor 108; the two driven gears 110 are respectively fixedly connected to the two rotating shafts 106 and are respectively meshed with the driving gear 109; the thyristor drive module 101 is arranged on the top of the heat dissipation fin 105. The heat dissipation fins 105 absorb and discharge the heat generated by the thyristor drive module 101 during operation, thereby reducing the heat of the thyristor drive module 101. At the same time, the motor 108 drives the driving gear 109 to rotate, and the driving gear 109 drives the two driven gears 110 to rotate. The two driven gears 110 drive the two rotating shafts 106 to rotate, and the rotating shaft 106 drives the fan blades 107 to rotate, so that the two fan blades 107 rotate at the same time, and the heat dissipation fins 105 are blown to dissipate heat, so that the hot air can be quickly discharged, thereby improving the heat dissipation effect of the thyristor drive module 101 and avoiding product failure due to excessive temperature that affects the stability of product performance.

[0025] Secondly, the two filter screens 111 are respectively connected to the mounting seat 103 in a sliding manner and are located at two sides of the mounting seat 103. The filter screens 111 are used to prevent dust or impurities from entering the interior of the mounting seat 103.

[0026] At the same time, the MOS tube 112 is arranged on the top of the heat sink fin 105, the high-frequency isolation transformer 113 is arranged on the top of the heat sink fin 105, and the Schottky diode 114 is arranged on the top of the heat sink fin 105. The MOS tube 112 is connected to the high-frequency isolation transformer 113 through a line, the high-frequency isolation transformer 113 is connected to the Schottky diode 114 through a line, and the Schottky diode 114 is connected to the thyristor. The CPU in the circuit outputs a square wave of a fixed frequency to control the MOS tube 112 to drive the high-frequency isolation transformer 113. The square wave output by the high-frequency isolation transformer 113 is rectified by the Schottky diode and becomes a DC voltage. The DC voltage controls the trigger pins G and K of the thyristor. The thyristor trigger pins G and K are turned on when there is a positive DC voltage, and turned off when there is no positive DC voltage. Therefore, the CPU can control the conduction and shutdown of the thyristor by outputting a square wave of a fixed frequency. When the CPU does not output a square wave signal, the output end of the high-frequency isolation transformer 113 has no power supply, and there is no positive DC voltage to drive the conduction condition of the thyristor. Although there are interference signals of different frequencies in the power grid, since there is no positive DC voltage to drive the conduction condition of the thyristor, the thyristor will not be triggered by mistake and damaged. The MOS tube 112, the high-frequency isolation transformer 113 and the Schottky diode 114 are all existing products, wherein the MOS tube 112, the high-frequency isolation transformer 113 and the square wave signal of the fixed frequency must be perfectly matched. Too high or too low a frequency will cause the MOS tube 112 and the high-frequency isolation transformer 113 to heat up seriously, thereby reducing the service life. The frequency needs to be constantly adjusted to achieve the most perfect matching effect before the frequency is fixed, and the parameters of the MOS tube 112 and the high-frequency isolation transformer 113 cannot be changed after they are determined, and the withstand voltage and rated current of the Schottky diode also need to match the parameters of the high-frequency isolation transformer 113.

[0027] When the utility model is used, the heat dissipation fins 105 absorb and discharge the heat generated by the thyristor drive module 101 during operation, thereby reducing the heat of the thyristor drive module 101. At the same time, the motor 108 drives the driving gear 109 to rotate, and the driving gear 109 drives the two driven gears 110 to rotate. The two driven gears 110 drive the two rotating shafts 106 to rotate, and the rotating shaft 106 drives the fan blades 107 to rotate, so that the two fan blades 107 rotate at the same time, and the heat dissipation fins 105 are blown to dissipate heat, so that the hot air can be quickly discharged, thereby improving the heat dissipation effect of the thyristor drive module 101, and avoiding product failure due to excessive temperature that affects the stability of product performance.

[0028] The second embodiment of the present application is:

[0029] Based on the first embodiment, please refer to Figure 3-Figure 4 ,in, Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the utility model. Figure 4 It is a side cross-sectional view of the entire second embodiment of the utility model.

[0030] The isolated and anti-interference thyristor driving device provided by the utility model further includes a plurality of fixing components 201 ; the fixing components 201 include a slide bar 202 , a baffle 203 and a spring 204 .

[0031] According to this specific embodiment, a plurality of fixing components 201 are respectively arranged on the mounting seat 103. The fixing components 201 can fix the position of the filter screen 111.

[0032] The slide bar 202 is slidably connected to the mounting seat 103 and is located at the side of the mounting seat 103; the baffle plate 203 is fixedly connected to the slide bar 202 and is located at the side of the slide bar 202. The mounting seat 103 is provided with a mounting groove adapted to the filter screen 111. The filter screen 111 is placed in the mounting groove on the mounting seat 103, and the slide bar 202 is slid to move the baffle plate 203 to the top of the filter screen 111. The baffle plate 203 can be used to fix the position of the filter screen 111.

[0033] Secondly, one end of the spring 204 is fixedly connected to the mounting seat 103, and the other end is fixedly connected to the slide bar 202, and is located between the mounting seat 103 and the slide bar 202. The elastic potential energy of the spring 204 can be used to reset the position of the baffle 203 after the baffle 203 is moved.

[0034] When using the utility model, the mounting seat 103 is provided with a mounting groove adapted to the filter 111. The baffle 203 is pulled to stretch the spring 204, and then the filter 111 is placed in the mounting groove on the mounting seat 103, and then the baffle 203 is released. The spring 204 pulls the baffle 203 to move to the top of the filter 111 via the slide rod 202, and the position of the filter 111 is fixed by the baffle 203. When the filter 111 needs to be disassembled, the baffle 203 is pulled away from the filter 111, and then the filter 111 is taken out from the mounting seat 103. This fixing method can facilitate the installation and disassembly of the filter 111.

[0035] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An isolated and anti-interference thyristor driving device, comprising a thyristor driving module, characterized in that: Also included is a heat dissipation assembly; The heat dissipation assembly includes a mounting seat, a bracket, heat dissipation fins, two rotating shafts, two fan blades, a motor, a driving gear and two driven gears; the bracket is fixedly connected to the mounting seat and is located on the top of the mounting seat; the heat dissipation fins are fixedly connected to the bracket and are located on the top of the bracket; the two rotating shafts are respectively rotatably connected to the mounting seat and are respectively located inside the mounting seat; the two fan blades are respectively fixedly connected to the two rotating shafts and are respectively located on the top of the two rotating shafts; the motor is fixedly connected to the mounting seat and is located inside the mounting seat; the driving gear is fixedly connected to the output end of the motor and is located on the top of the motor; the two driven gears are respectively fixedly connected to the two rotating shafts and are respectively meshed with the driving gear; the thyristor drive module is arranged on the top of the heat dissipation fins.

2. The isolated and anti-interference thyristor driving device according to claim 1, characterized in that: The heat dissipation component also includes two filters; the two filters are respectively slidably connected to the mounting seat and are located on both sides of the mounting seat.

3. The isolated and anti-interference thyristor driving device according to claim 2, characterized in that: The thyristor driving module includes a MOS tube, a high-frequency isolation transformer and a Schottky diode; the MOS tube is arranged on the top of the heat dissipation fin, the high-frequency isolation transformer is arranged on the top of the heat dissipation fin, and the Schottky diode is arranged on the top of the heat dissipation fin.

4. The isolated and anti-interference thyristor driving device according to claim 3, characterized in that: The isolated and anti-interference thyristor driving device also includes a plurality of fixing components; the plurality of fixing components are respectively arranged on the mounting seat.

5. The isolated and anti-interference thyristor driving device according to claim 4, characterized in that: The fixing assembly comprises a sliding rod and a baffle; the sliding rod is slidably connected to the mounting seat and is located at a side of the mounting seat; the baffle is fixedly connected to the sliding rod and is located at a side of the sliding rod.

6. The isolated and anti-interference thyristor driving device according to claim 5, characterized in that: The fixing assembly also includes a spring; one end of the spring is fixedly connected to the mounting seat, and the other end of the spring is fixedly connected to the slide rod and is located between the mounting seat and the slide rod.

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