Cabinet type modular tubular low-temperature plasma generator

Abstract

The utility model provides a cabinet type modular tubular low-temperature plasma generator, which comprises a cabinet, and a strong current control plate, a weak current control plate, a hundred nanosecond direct-current high-frequency high-voltage power supply plate, a modular tubular low-temperature plasma generator plate, a cabinet air conditioner plate, a touch display screen and a controller plate are arranged inside and outside the cabinet. The strong current control plate conveys strong current to the weak current control plate and the cabinet air conditioner plate, a plurality of power modules are arranged in the hundred nanosecond direct-current high-frequency high-voltage power supply plate, and a plurality of modularized tubular low-temperature plasma generators electrically connected with the power modules are arranged in the modularized tubular low-temperature plasma generator plate. The weak current control plate transmits weak current to each power supply module, and the weak current control plate monitors cabinet data through a sensor and carries out visual display. The device has the beneficial effects that the simple and efficient production of low-temperature plasma can be realized under the condition of low energy consumption, the compact design is realized, and the operation stability of equipment is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of advanced oxidation technology equipment, and concretely relates to a cabinet type modularized tubular low-temperature plasma generator. BACKGROUND

[0002] Under the background that environmental protection is increasingly valued, efficient oxidation technology shows remarkable results in water quality purification and air pollution control fields. The technology is mainly applied to wastewater treatment and drinking water purification links, wherein the water treatment process includes a three-stage treatment process: primary treatment uses physical separation methods such as sedimentation and filtration to remove suspended substances; secondary treatment relies on the metabolic function of microorganisms for biochemical degradation. However, the water body after the first two stages of treatment still contains refractory pollutants, which need to be treated by advanced oxidation technology to achieve discharge standards. In the three-stage treatment scheme, advanced oxidation technology becomes the mainstream choice due to its outstanding treatment efficiency, and ozone catalytic oxidation technology is widely used in water treatment fields due to its excellent oxidation capacity. However, the core equipment of the technology, the ozone generator, has long had significant defects: high energy consumption, complex auxiliary system, difficult maintenance, and high operating cost.

[0003] The tubular low-temperature plasma generator produces plasma gas, including free electrons, high-energy ions, active free radicals, and nascent oxygen, etc. In contrast, the ozone generator only produces a single gaseous molecule - ozone. Therefore, low-temperature plasma has higher electron volt energy density and stronger oxidation-reduction potential, and is free of secondary pollution, making it an ideal bactericide for the future. With the deepening of environmental protection concepts, low-temperature plasma technology, as an innovative form of advanced oxidation process, shows broad application prospects.

[0004] Therefore, there is an urgent need for a cabinet type modularized tubular low-temperature plasma generator that can produce low-temperature plasma simply and efficiently under low energy consumption conditions, has a compact design, and can significantly improve the stability of the equipment. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of producing low-temperature plasma simply and efficiently under low energy consumption conditions, and has a compact design and significantly improves the stability of the equipment. To overcome the defects of the above prior art (or related technology), the utility model provides a cabinet type modularized tubular low-temperature plasma generator.

[0006] The utility model provides a kind of modularization tubular low-temperature plasma generator of cabinet type, including cabinet, the inside of the cabinet is equipped with strong electric control board piece, weak electric control board piece, hundred nanosecond level direct current high frequency high voltage power supply piece, modularization tubular low-temperature plasma generator piece and cabinet air conditioning piece, the outside of the cabinet is equipped with touch display screen and controller piece, the strong electric control board piece is electrically connected with the weak electric control board piece and the cabinet air conditioning piece respectively, the weak electric control board piece is electrically connected with the hundred nanosecond level direct current high frequency high voltage power supply piece and the touch display screen and controller piece respectively, the hundred nanosecond level direct current high frequency high voltage power supply piece is electrically connected with the modularization tubular low-temperature plasma generator piece, the strong electric control board piece is accessed external power supply and is transported strong electricity to the weak electric control board piece and the cabinet air conditioning piece by control circuit, multiple power modules are equipped in the hundred nanosecond level direct current high frequency high voltage power supply piece, the modularization tubular low-temperature plasma generator piece is equipped with multiple modularization tubular low-temperature plasma generators electrically connected with each power module one by one, the weak electric control board piece is transported weak electricity to each power module by control circuit, the weak electric control board piece is monitored to obtain cabinet internal temperature, cabinet air conditioning temperature, compressed air flow, compressed air pressure, low-temperature plasma oxidation-reduction potential, current, voltage, power and visual display on the touch display screen and controller piece.

[0007] Compared with the prior art, the modularization tubular low-temperature plasma generator of cabinet type has the following advantages:

[0008] In the compact space inside the cabinet, the strong electric control board piece, the weak electric control board piece, the hundred nanosecond level direct current high frequency high voltage power supply piece, the modularization tubular low-temperature plasma generator piece and the cabinet air conditioning piece are partitioned and arranged, the touch display screen and the controller piece are arranged outside the cabinet, the strong electric control board piece, the weak electric control board piece and the hundred nanosecond level direct current high frequency high voltage power supply piece are used to supply power in layers, the overall power supply stability and the equipment operation stability are improved, the modularization tubular low-temperature plasma generator piece is used to produce low-temperature plasma safely and stably, the space inside the cabinet does not need to be occupied by additional equipment, the number of pieces is limited to reduce energy consumption, low-temperature plasma is produced simply and efficiently under low energy consumption, the compact design is achieved and the equipment operation stability is greatly improved.

[0009] In a possible implementation, the weak electric control board piece is equipped with multiple switching power supply modules with voltage 24V and current 20A, each switching power supply module is electrically connected with each power module.

[0010] Compared with the prior art, the above technical scheme can independently power each power module through the 24V / 20A switching power module, realize strong and weak current isolation, avoid electromagnetic interference affecting stability, and ensure the output consistency of the power module.

[0011] In a possible implementation, the input voltage of each power module is 24-30V DC voltage, the working pulse width is 200-400ns, the high-frequency frequency is 15-18KHz, and the output DC high-voltage is 20-25KV.

[0012] Compared with the prior art, the above technical scheme can optimize the ionization efficiency of the low-temperature plasma by setting the parameter combination of the working pulse width of 200-400ns, the high-frequency frequency of 15-18KHz, and the DC high-voltage of 20-25KV.

[0013] In a possible implementation, the inside of the cabinet is provided with a gas path pipeline in communication with each modular tubular low-temperature plasma generator, and compressed air subjected to dust removal, oil removal, water removal, and drying treatment is input to each modular tubular low-temperature plasma generator through the gas path pipeline to generate low-temperature plasma and output to an external dosing device.

[0014] Compared with the prior art, the above technical scheme can avoid impurities in the compressed air from entering the plasma reaction zone in the modular tubular low-temperature plasma generator by the pretreatment of dust removal, oil removal, water removal, and drying, prevent electrode pollution or gas path blockage, and ensure the plasma output purity and long-term stable operation.

[0015] In a possible implementation, the material of the gas path pipeline is 304 stainless steel.

[0016] Compared with the prior art, the above technical scheme can provide the gas path pipeline with corrosion resistance, oxidation resistance, adaptability to high humidity and active particle environment, and avoid metal precipitation pollution.

[0017] In a possible implementation, the gas path pipeline includes a compressed air inlet main pipeline, a plurality of compressed air input branch pipelines, a low-temperature plasma output main pipeline, and a plurality of low-temperature plasma output branch pipelines, the input end of the compressed air inlet main pipeline is connected to an external compressed air supply device, the input end of each compressed air input branch pipeline is connected to the output end of the compressed air inlet main pipeline, the output end of each compressed air input branch pipeline is in one-to-one communication with each modular tubular low-temperature plasma generator, the input end of each low-temperature plasma output branch pipeline is in one-to-one communication with each modular tubular low-temperature plasma generator, and the output end of the low-temperature plasma output main pipeline is connected to an external dosing device.

[0018] Compared with the prior art, the above technical scheme can realize parallel gas supply and centralized output of the multi-module tubular low-temperature plasma generator, support flexible expansion without reconstructing the gas path pipeline, and reduce the cost of scale application.

[0019] In a possible implementation, a pressure sensor control valve and a gas flow sensor control valve are respectively installed on each of the compressed air input branch pipelines, and a low-temperature plasma oxidation-reduction potential sensor is installed on the low-temperature plasma output main pipeline.

[0020] Compared with the prior art, the above technical scheme can form a closed-loop control through the pressure sensor control valve, the gas flow sensor control valve and the low-temperature plasma oxidation-reduction potential sensor, accurately adjust the parameters of each branch gas path, ensure that the low-temperature plasma output by different modular tubular low-temperature plasma generators is consistent in performance, and avoid local overload or uneven efficiency.

[0021] In a possible implementation, an input end of the compressed air inlet main pipeline is provided with a compressed air input connection flange matched with the compressed air supply device, and an output end of the low-temperature plasma output main pipeline is provided with a low-temperature plasma output connection flange matched with the dosing device.

[0022] Compared with the prior art, the above technical scheme can simplify quick docking with external equipment through the standardized flange interface, reduce the complexity of field installation, and adapt to the application requirements of multiple scenes. DETAILED DESCRIPTION

[0023] Figure 1 It is a distribution schematic view of each plate block inside the cabinet of the utility model;

[0024] Figure 2 It is a front view structural schematic view outside the cabinet of the utility model;

[0025] Figure 3 It is a back view structural schematic view outside the cabinet of the utility model;

[0026] Figure 4 It is a right 45-degree side view structural schematic view outside the cabinet of the utility model;

[0027] Figure 5 It is a left 45-degree side view structural schematic view outside the cabinet of the utility model;

[0028] Figure 6 It is a control principle diagram of the PLC of the utility model;

[0029] Figure 7 It is a working process schematic view of the utility model;

[0030] Figure 8 The utility model discloses a switch power module and the main circuit schematic diagram of PLC;

[0031] Figure 9 The utility model discloses the installation and pipe structure schematic diagram of modularization tubular low temperature plasma generator;

[0032] Mark 1, strong electric control board piece;2, weak electric control board piece;3, hundred nanosecond level direct current high frequency high voltage power board piece;4, modularization tubular low temperature plasma generator board piece;5, cabinet;6, touch display screen and controller board piece;7, low temperature plasma output connection flange;8, compressed air input connection flange;9, cabinet air conditioning board piece;10, PLC;11, switch power module;12, compressed air input main pipeline;13, compressed air input branch pipeline;14, low temperature plasma output main pipeline;15, low temperature plasma output branch pipeline;16, modularization tubular low temperature plasma generator;17, gas flow sensor control valve;18, pressure sensor control valve;19, low temperature plasma oxidation reduction potential sensor;20, power module. DETAILED DESCRIPTION

[0033] First, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of the application, and are not intended to limit the protection scope of the embodiments of the application. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions.

[0034] The application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0035] Reference Figures 1-5The embodiment of the application discloses a cabinet type modular tubular low-temperature plasma generator, which comprises a cabinet 5, wherein the inside of the cabinet 5 is provided with a strong-current control board 1, a weak-current control board 2, a hundred-nanosecond-level direct-current high-frequency high-voltage power supply board 3, a modular tubular low-temperature plasma generator board 4 and a cabinet air conditioner board 9; the outside of the cabinet 5 is provided with a touch display screen and a controller board 6; the strong-current control board 1 is electrically connected with the weak-current control board 2 and the cabinet air conditioner board 9 respectively; the weak-current control board 2 is electrically connected with the hundred-nanosecond-level direct-current high-frequency high-voltage power supply board 3 and the touch display screen and the controller board 6 respectively; the hundred-nanosecond-level direct-current high-frequency high-voltage power supply board 3 is electrically connected with the modular tubular low-temperature plasma generator board 4; the strong-current control board 1 is connected with an external power supply and transmits strong current to the weak-current control board 2 and the cabinet air conditioner board 9 through a control circuit; a plurality of power supply modules 20 are arranged in the hundred-nanosecond-level direct-current high-frequency high-voltage power supply board 3; a plurality of modular tubular low-temperature plasma generators 16 which are electrically connected with the power supply modules 20 one by one are arranged in the modular tubular low-temperature plasma generator board 4; the weak-current control board 2 transmits weak current to the power supply modules 20 through the control circuit; the weak-current control board 2 obtains the temperature inside the cabinet, the temperature of the cabinet air conditioner, the flow of compressed air, the pressure of compressed air, the oxidation-reduction potential of low-temperature plasma, current, voltage and power through a sensor and displays the above parameters on the touch display screen and the controller board 6.

[0036] The weak-current control board 2 obtains monitoring and processing data of the hundred-nanosecond-level direct-current high-frequency high-voltage power supply board 3 and the modular tubular low-temperature plasma generator board 4 through a sensor and displays the data in real time through the touch display screen; further, as shown in the figure, Figure 2 The touch display screen and the controller board 6 are arranged on the cabinet 5, wherein the touch display screen is connected with a feedback system; the feedback system is used for monitoring the temperature inside the cabinet, the temperature of the cabinet air conditioner, the flow of compressed air, the pressure of compressed air, the oxidation-reduction potential of low-temperature plasma, current, voltage and power in real time and alarming faults; alarm information is displayed through the touch display screen.

[0037] The interior of the cabinet 5 is provided with gas path pipelines in communication with the modular tubular low-temperature plasma generators 16, and compressed air after dust removal, oil removal, water removal and drying treatment is input to the modular tubular low-temperature plasma generators 16 through the gas path pipelines and low-temperature plasma is generated and output to the external dosing device. The gas path pipelines include a compressed air inlet main pipeline 12, a plurality of compressed air input branch pipelines 13, a low-temperature plasma output main pipeline 14 and a plurality of low-temperature plasma output branch pipelines 15. The input end of the compressed air inlet main pipeline 12 is connected to the external compressed air supply device. The input ends of the compressed air input branch pipelines 13 are connected to the output end of the compressed air inlet main pipeline 12. The output ends of the compressed air input branch pipelines 13 are in one-to-one communication with the modular tubular low-temperature plasma generators 16. The input ends of the low-temperature plasma output branch pipelines 15 are in one-to-one communication with the modular tubular low-temperature plasma generators 16. The output end of the low-temperature plasma output main pipeline 14 is connected to the external dosing device.

[0038] The material of the gas path pipelines is 304 stainless steel, which can prevent the oxidation of the pipelines by low-temperature plasma.

[0039] The pico-second level direct current high-frequency high-voltage power supply board 3 includes a plurality of power supply modules 20. The input voltage of the power supply modules 20 is direct current 24-30V, the working pulse width is 200-400ns, the high-frequency frequency is 15-18KHz, and the direct current high-voltage is 20-25KV.

[0040] Referring to Figure 1 and Figure 9 , the modular tubular low-temperature plasma generator board 4 specifically includes a plurality of modular tubular low-temperature plasma generators 16, a compressed air inlet main pipeline 12, a plurality of compressed air inlet branch pipelines 13, a plurality of pressure sensor control valves 18 installed on the compressed air inlet branch pipelines 13, a plurality of gas flow sensor control valves 17, a low-temperature plasma output main pipeline 14, a plurality of low-temperature plasma output branch pipelines 15, and a low-temperature plasma oxidation-reduction potential sensor 19 installed on the low-temperature plasma output main pipeline 14 for monitoring the low-temperature plasma oxidation-reduction potential.

[0041] Referring to Figure 4 and Figure 5, the input end of the compressed air inlet main pipeline 12 is provided with a compressed air input connecting flange 8 matched with the compressed air supply device, and the output end of the low-temperature plasma output main pipeline 14 is provided with a low-temperature plasma output connecting flange 7 matched with the dosing device, the compressed air input connecting flange 8 is located at the middle position of the bottom of the right vertical surface of one side of the touch display screen and the controller block 6 on the cabinet 5, and the low-temperature plasma output connecting flange 7 is located at the middle position of the bottom of the left vertical surface of one side of the touch display screen and the controller block 6 on the cabinet 5.

[0042] Referring to Figure 6 , the PLC 10 transmits and controls signals to the switching power supply module 11, collects and processes data through sensors, controls the internal temperature of the cabinet, the temperature of the air conditioner of the cabinet, the flow of compressed air, the pressure of compressed air, the monitoring of the redox potential, current, voltage and power of the low-temperature plasma, and further supplies the modular low-temperature plasma generator 16, at the same time, all information display and operation are displayed and controlled through the touch display screen, and the power supply module of the pico-second level direct current high frequency high voltage power supply block 3 supplies the modular low-temperature plasma generator 16.

[0043] Specifically, the main control air switch of the modular low-temperature plasma generator 16 is turned to the on position, 5 control air switches are turned on first, the air compressor, the air conditioner, the sensor and the like have been powered, then 20 unit air switches are turned to the on position, the modular low-temperature plasma generator 16 has been powered, at this time, the compressed air introduced through the compressed air inlet main pipeline 12 and the compressed air inlet branch pipeline 13 generates low-temperature plasma under high-frequency high-voltage conditions in the inner cavity of the modular low-temperature plasma generator 16, the low-temperature plasma is output through the low-temperature plasma output branch pipeline 15 and is output after being collected in the low-temperature plasma output main pipeline 14, so that the whole working process of the modular low-temperature plasma generator 16 is realized.

[0044] Referring to Figure 7 , the control system provides high-frequency high-voltage power to the modular low-temperature plasma generator 16 through the switching power supply module 11 and the power supply module 20, after the compressed air passes through the filter, enters the modular low-temperature plasma generator 16, generates low-temperature plasma under the excitation of high-frequency high-voltage electric field and outputs.

[0045] Specifically, the control process of the embodiment of the utility model is: connecting AC 380V electricity to the strong current control board block 1, the strong current control board block 1 realizes protection through electrical element circuit breaker, contactor, thermal relay, etc., the control circuit of the strong current control board block 1 is connected to the PLC 10 and a plurality of switching power supply modules 11 of the weak current control board block 2 respectively, a plurality of switching power supply modules 11 are connected to a plurality of corresponding power modules 20 respectively, and a plurality of power modules 20 are connected to a plurality of corresponding modular tube type low temperature plasma generators 16 respectively;At the same time, the weak current control board block 2 connects lines to a plurality of switching power supply modules 11 and various sensors to monitor and process data, and outputs real-time data to the touch display screen and the controller board block 6, if a fault occurs, it will alarm, which is convenient for staff to handle in time, so that automatic control and operation are realized.

[0046] Referring to Figure 8 It is the main circuit diagram of switching power supply module 11 and PLC 10, it should be explained that the implementation mode of switching power supply module 11 and PLC 10 in the embodiment of the utility model is various, only one implementation mode is given as an example here, and the utility model does not limit the implementation mode of switching power supply module 11 and PLC 10.

[0047] Referring to Figure 9 Among them, a plurality of modular tube type low temperature plasma generators 16, compressed air inlet main pipeline 12, a plurality of compressed air inlet branch pipelines 13, a plurality of pressure sensor control valves 18 installed on the compressed air inlet branch pipeline 13, a plurality of gas flow sensor control valves 17, low temperature plasma output main pipeline 14, a plurality of low temperature plasma output branch pipelines 15 and low temperature plasma oxidation-reduction potential sensor 19 installed on low temperature plasma output main pipeline 14 for monitoring low temperature plasma oxidation-reduction potential can be seen.

[0048] The embodiment of the utility model provides a device that can make low temperature plasma present and produce a large amount, under the control of PLC 10, the cabinet type modular tube type low temperature plasma generator needs to monitor and alarm faults in real time to the temperature inside the cabinet, the temperature of the cabinet air conditioner, compressed air flow, compressed air pressure, low temperature plasma oxidation-reduction potential, current, voltage, power, etc., PLC 10 is configured with a touch display screen, and alarm signals are displayed on the touch display screen in real time, which is convenient for on-site personnel to solve in time, the strong current control board block 1 can make the device run safely and stably through the control and protection of circuit breaker, contactor, intermediate relay, thermal relay and other electrical elements, and power module 20 is actually a frequency converter and a transformer, which provides power output for the preparation of low temperature plasma through the synergistic effect of rectifier bridge, IGBT, drive board and CPU.

[0049] The modular low-temperature plasma generator 16 is used for generating low-temperature plasma by exciting compressed air in a high-frequency high-voltage discharge chamber by using a micro-needle ring surface discharge method, and cooling the modular low-temperature plasma generator 16 by air cooling to prevent the generated low-temperature plasma from decaying due to poor heat dissipation; in addition, the modular design can be assembled according to requirements, and different low-temperature plasma production can be realized by modular integration.

[0050] The utility model embodiment relates to gas path pipeline, and installs temperature, pressure, flow and oxidation reduction potential sensor on gas path pipeline, realizes real time monitoring and signal transmission with PLC 10, gas path pipeline is reasonable in design and saves space, is flexible and easy to move and is convenient to detach, can be flexibly used in different spaces.

[0051] The utility model embodiment adopts cabinet type design, including strong current control board piece 1, weak current control board piece 2, hundred nanosecond level direct current high frequency high voltage power supply board piece 3, modular pipe type low temperature plasma generator board piece 4, cabinet air conditioning board piece 9, touch display screen and controller board piece 6, the cabinet body of cabinet 5 adopts front and rear door design, designs different structure according to different cabinets, integrated space and different function partition design, compact and reasonable design;The design integrates the cooperation of mechanical, structural, electrical and other disciplines;Control system and touch display screen configuration realize signal transmission and real time monitoring, the high degree of combination of whole system realizes automation, through reasonable installation order, make whole system safe, efficient and stable operation, through feedback system, real time data can be clearly understood, safe and fast, at the same time, the whole system is provided with alarm device, when the system fails, can be understood in time and solved as soon as possible, avoid causing greater loss, adopt domestic and foreign high-precision technology, can work continuously, the concentration of low temperature plasma is high, energy consumption is low, safe and stable, the control and detection process of the system is high in integration degree, so that the control circuit, power module 20 and modular pipe type low temperature plasma generator 16 work in different function partitions without affecting each other, coordinate and unify.

[0052] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific examples" or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or features of the embodiments or examples described in the present specification without contradiction.

[0053] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical scope disclosed by the present application can be easily conceived by the person skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cabinet-type modular tubular low-temperature plasma generator, characterized in that, The system includes a cabinet. Inside the cabinet are a high-voltage control panel, a low-voltage control panel, a nanosecond-level DC high-frequency high-voltage power supply panel, a modular tubular cryogenic plasma generator panel, and a cabinet air conditioning panel. Externally, the cabinet has a touchscreen display and controller panel. The high-voltage control panel is electrically connected to the low-voltage control panel and the cabinet air conditioning panel. The low-voltage control panel is electrically connected to the nanosecond-level DC high-frequency high-voltage power supply panel and the touchscreen display and controller panel. The nanosecond-level DC high-frequency high-voltage power supply panel is electrically connected to the modular tubular cryogenic plasma generator panel. The high-voltage control panel is connected to an external power source and... The control circuit supplies high-voltage power to the low-voltage control board and the cabinet air conditioning board. The nanosecond-level DC high-frequency high-voltage power supply board contains multiple power modules. The modular tubular low-temperature plasma generator board contains multiple modular tubular low-temperature plasma generators that are electrically connected to each of the power modules. The low-voltage control board supplies low-voltage power to each of the power modules through the control circuit. The low-voltage control board monitors the cabinet internal temperature, cabinet air conditioning temperature, compressed air flow rate, compressed air pressure, low-temperature plasma oxidation-reduction potential, current, voltage, and power through sensors and displays them visually on the touch screen and controller module.

2. The cabinet-type modular tubular low-temperature plasma generator according to claim 1, characterized in that, The low-voltage control panel is equipped with multiple 24V, 20A switching power supply modules, and each switching power supply module is electrically connected to each other.

3. The cabinet-type modular tubular low-temperature plasma generator according to claim 1, characterized in that, Each of the power modules has an input voltage of 24~30V DC, an operating pulse width of 200~400ns, a high frequency of 15~18KHz, and an output DC high voltage of 20~25KV.

4. The cabinet-type modular tubular cryogenic plasma generator according to claim 1, characterized in that, The cabinet is equipped with an internal gas pipeline that connects to each of the modular tubular low-temperature plasma generators. Compressed air that has undergone dust removal, oil removal, water removal, and drying is input through the gas pipeline to each of the modular tubular low-temperature plasma generators and generate low-temperature plasma that is output to the outside.

5. The cabinet-type modular tubular cryogenic plasma generator according to claim 4, characterized in that, The gas pipeline is made of 304 stainless steel.

6. The cabinet-type modular tubular cryogenic plasma generator according to claim 4, characterized in that, The gas pipeline includes a main compressed air inlet pipeline, multiple compressed air input branch pipelines, a main cryogenic plasma output pipeline, and multiple cryogenic plasma output branch pipelines. The input end of the main compressed air inlet pipeline is connected to an external compressed air supply device. The input end of each of the compressed air input branch pipelines is connected to the output end of the main compressed air inlet pipeline. The output end of each of the compressed air input branch pipelines is connected to each of the modular tubular cryogenic plasma generators. The input end of each of the cryogenic plasma output branch pipelines is connected to each of the modular tubular cryogenic plasma generators. The output end of the main cryogenic plasma output pipeline is connected to an external dosing device.

7. The rack-mounted modular tubular cryogenic plasma generator according to claim 6, characterized in that, Each of the compressed air input branch pipes is equipped with a pressure sensor control valve and a gas flow sensor control valve, and a low-temperature plasma oxidation-reduction potential sensor is installed on the low-temperature plasma output main pipe.

8. The rack-mounted modular tubular cryogenic plasma generator according to claim 6, characterized in that, The input end of the compressed air intake main pipeline is provided with a compressed air input connection flange adapted to the compressed air supply device, and the output end of the low-temperature plasma output main pipeline is provided with a low-temperature plasma output connection flange adapted to the dosing device.

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