CN-120769466-B - Heat dissipation type magnetic compression switch for plasma high-voltage power supply and control method thereof

Abstract

The application relates to the technical field of plasma high-voltage power supplies, in particular to a heat dissipation type magnetic compression switch for a plasma high-voltage power supply and a control method thereof, comprising a shell, an inner air duct, a heat dissipation type magnetic compression switch and a heat dissipation type magnetic compression switch, wherein the shell is internally provided with a switch body; the device comprises an inner air duct, an outer air duct, a speed regulating fan, an elastic unit and a front end connecting port, wherein the inner air duct is arranged between the inner wall and the outer wall of a shell and is communicated with the inner air duct, the speed regulating fan is provided with two modes of breeze and stiff wind and is used for feeding air to the front end of the inner air duct, the elastic unit is sealed at the front end connecting ports of the inner air duct and the outer air duct in the breeze mode so that heat in the shell is dissipated only through the inner air duct when heat accumulation is not serious, and the elastic unit is separated from the front end connecting ports of the inner air duct and the outer air duct in the stiff wind mode so that heat in the shell is dissipated in an accelerating mode through the inner air duct and the outer air duct when the heat accumulation is serious. According to the application, the switch body can be rapidly cooled by adopting a corresponding heat dissipation mode according to the heat accumulation degree.

Inventors

• LING WEI
• WANG RENJIN
• WU JIAN
• Xiang Xiaozheng
• ZHUANG JIANCHENG

Assignees

• 浙江佳环电子有限公司

Dates

Publication Date

20260512

Application Date

20250717

Claims (3)

1. 1. A heat dissipation type magnetic compression switch for plasma high voltage power supply, including the casing, be equipped with the switch body in the casing, its characterized in that still includes: the inner air duct is arranged in the shell and communicated with the inner side and the outer side of the shell; the outer air channel is arranged between the inner wall and the outer wall of the shell and is communicated with the inner air channel; The speed regulating fan is used for feeding air to the front end of the inner air duct and is provided with a breeze mode, a strong wind mode and a high wind mode; the inner air duct comprises a front air duct, branch air ducts and a rear air duct, wherein the front air duct comprises a fixed front pipe and a sliding front pipe which are coaxially arranged, the fixed front pipe is communicated with the front end of the outer air duct, and the sliding front pipe is communicated with all branch air ducts; the outer air duct comprises a front air cavity, a middle air cavity and a rear air cavity, wherein the front air cavity is communicated with the front air duct and is positioned at the front end of the switch body, the rear air cavity is communicated with the rear air duct and is positioned at the rear end of the switch body, and the middle air cavity is communicated with the front air cavity and the rear air cavity and surrounds the periphery of the switch body; The radiating fins are rotationally connected to the outer wall of the shell through a rotating shaft; The rotating unit comprises a rotating shaft, an extending plate and an elastic strip, wherein the extending plate is positioned in the outer air duct and is connected with the radiating fins through the rotating shaft, and the extending plate can be driven to rotate by air flow under the high wind mode to drive the radiating fins to rotate and separate from the outer wall of the shell; The elastic unit is arranged in the fixed front pipe and comprises a sliding sleeve and a spring, wherein the sliding sleeve is embedded in the fixed front pipe in a sliding manner along the axial direction of the fixed front pipe, the sliding sleeve is connected with the fixed front pipe through the spring, one end of the spring is fixedly connected with the sliding sleeve, and the other end of the spring is fixedly connected with the fixed front pipe; When the speed-regulating fan operates in a breeze mode, the sliding sleeve seals the connecting port under the action of the spring, when the speed-regulating fan operates in a wind-stiff mode, the sliding sleeve moves against the elastic force of the spring under the action of wind pressure to open the connecting port, when the speed-regulating fan operates in the wind-fast mode, the sliding sleeve opens the connecting port, and the extension plate is driven by air flow to rotate so as to drive the radiating fins to rotate and separate from the outer wall of the shell.
2. 2. The heat dissipating magnetic compression switch for a plasma high voltage power supply of claim 1 further comprising: the temperature sensor is arranged in the shell and is used for detecting the temperature in the shell; the controller, the temperature sensor and the speed regulation fan are coupled to the controller; When the temperature value detected by the temperature sensor is larger than a first threshold value and smaller than a second threshold value, the temperature sensor transmits a primary heat dissipation signal to the controller, and the controller controls the speed regulation fan to operate in a breeze mode; When the temperature value detected by the temperature sensor is larger than the second threshold value and smaller than the third threshold value, the temperature sensor transmits a secondary heat dissipation signal to the controller, and the controller controls the speed regulation fan to operate in a strong wind mode; when the temperature value detected by the temperature sensor is greater than a third threshold value, the temperature sensor transmits three-level heat dissipation signals to the controller, and the controller controls the speed regulation fan to operate in a high wind mode.
3. 3. The method for controlling a heat dissipation type magnetic compression switch for a plasma high voltage power supply according to claim 2, comprising the steps of: s1, temperature detection and feedback, wherein a temperature sensor detects the temperature inside the shell and feeds back the temperature to a controller; S2, in a breeze mode, when the temperature value detected by the temperature sensor is larger than a first threshold value and smaller than a second threshold value, the controller controls the speed regulating fan to operate in the breeze mode, and external air radiates heat and cools the interior of the shell through the inner air duct and the radiating fins; S3, in the strong wind mode, when the temperature value detected by the temperature sensor is larger than a second threshold value and smaller than a third threshold value, the controller controls the speed regulating fan to operate in the strong wind mode, and external air dissipates heat and cools the interior of the shell through the inner air duct, the outer air duct and the heat dissipation fins; S4, in the high wind mode, when the temperature value detected by the temperature sensor is greater than a third threshold value, the controller controls the speed regulation fan to operate in the high wind mode, external air dissipates heat and cools the interior of the shell through the inner air duct, the outer air duct and the unfolded heat dissipation fins, and in the windless mode, when the temperature value detected by the temperature sensor is less than the first threshold value, the controller controls the speed regulation fan to be turned off.

Description

Heat dissipation type magnetic compression switch for plasma high-voltage power supply and control method thereof Technical Field The application relates to the technical field of plasma high-voltage power supplies, in particular to a heat dissipation type magnetic compression switch for a plasma high-voltage power supply and a control method thereof. Background The plasma high-voltage power supply is a high-voltage power supply system specially designed for generating pulse corona plasma, and is mainly used in the technical fields of resources and environment (such as pollutant degradation and waste gas treatment), and has the core function of converting electric energy into high-voltage pulses so as to excite stable plasma discharge. The magnetic compression switch is a high-power pulse switch technology for realizing quick on-off of current by utilizing magnetic field to compress plasma or conductive fluid, and is mainly applied to the fields of pulse power systems, controllable nuclear fusion, electromagnetic transmitters and the like. Through retrieval, chinese patent publication No. CN210725454U discloses a pulse corona plasma high-voltage power supply, which comprises a high-voltage pulse power supply part and a multi-stage magnetic compression device, wherein the high-voltage pulse power supply part comprises a charger, a high-voltage energy storage capacitor, a serial RSD switch, a magnetic saturation switch and a pulse transformer which are sequentially connected in series to form a loop, the charger is connected with the high-voltage energy storage capacitor in parallel and is used for charging the high-voltage energy storage capacitor, the multi-stage magnetic compression device is connected with the pulse transformer, and the output end of the multi-stage magnetic compression device is used as the output end of the pulse corona plasma high-voltage power supply. The patent eliminates dynamic power consumption when the RSD is turned on, and can improve the reliability of the series RSD switch under the working state of high repetition frequency and high current. The related art has the defects that under the working conditions of high frequency and high current, the heat accumulation degree of the magnetic compression switch unit is serious, the local temperature rise exceeds the standard, the magnetic saturation characteristic drift is possibly caused in the continuous operation process, and when the heat accumulation degree of the switch unit is serious, the switch unit cannot be cooled effectively and rapidly only by air cooling of a single air duct, so improvement is needed. Disclosure of Invention In order to automatically adopt a corresponding heat dissipation mode to quickly cool the switch body according to the heat accumulation degree, the application provides a heat dissipation type magnetic compression switch for a plasma high-voltage power supply and a control method thereof. According to the technical scheme, the heat dissipation type magnetic compression switch for the plasma high-voltage power supply comprises a shell, wherein a switch body is arranged in the shell, and the heat dissipation type magnetic compression switch further comprises: the inner air duct is arranged in the shell and communicated with the inner side and the outer side of the shell; the outer air channel is arranged between the inner wall and the outer wall of the shell and is communicated with the inner air channel; The speed regulation fan is provided with two modes of breeze and stiff wind and is used for feeding air to the front end of the inner air duct; The elastic unit is sealed at the front end connectors of the inner air duct and the outer air duct in a breeze mode, and is separated from the front end connectors of the inner air duct and the outer air duct in a stiff wind mode, so that the speed regulating fan can intake air to the outer air duct through the inner air duct. Optionally, the method further comprises: A plurality of heat dissipation fins which are rotatably connected with the shell and can be rotationally attached to or rotationally detached from the outer wall of the shell; and the rotating unit is used for driving the radiating fins to rotate. Optionally, the speed adjusting fan further has a high wind mode, and the rotating unit is movable by the speed adjusting fan in the high wind mode to cause the heat dissipating fins to rotate away from the outer wall of the housing. Optionally, the method further comprises: the temperature sensor is arranged in the shell and is used for detecting the temperature in the shell; the controller, the temperature sensor and the speed regulation fan are coupled to the controller; When the temperature value detected by the temperature sensor is larger than a first threshold value and smaller than a second threshold value, the temperature sensor transmits a primary heat dissipation signal to the controller, and the controller controls the speed regulation