Intelligent multichannel glow discharge device

Abstract

The invention discloses an intelligent multi-channel glow discharge device, which is characterized in that a positive electrode discharge unit and a negative electrode discharge unit have high integration degree and high safety degree through a multi-layer integrated design, and the distance between electrodes can be accurately regulated and controlled through an accurate electrode position detection and control unit. The flow of each channel and the size of liquid drops can be in an optimal state through independent monitoring and independent control of fluid of multiple channels, and the whole glow discharge process is efficient, intelligent, accurate, safe and controllable through an innovative multi-channel cooperative feedback control technology, an intelligent self-adaptive adjustment algorithm and an integrated safety protection system in the aspect of control. The method is particularly suitable for the fields of catalyst preparation and the like, and can effectively reduce the risk of manual operation while remarkably improving the production and preparation efficiency and the quality consistency of the catalyst.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of plasma technology, in particular to an intelligent multi-channel glow discharge device for catalyst preparation and a control method thereof, which is particularly suitable for multi-channel glow discharge catalytic reaction process requiring efficient and accurate control. The intelligent multi-channel glow discharge device comprises a high-voltage power supply, a positive electrode integrated unit, a negative electrode integrated unit, an electrode position control unit, a catalyst flow control unit, a magnetic stirring unit and an intelligent control unit. The high-voltage power supply provides high-voltage electricity for the positive electrode unit, the relative position of the positive and negative integrated electrodes is ensured by the electrode position control unit, the catalyst is kept at an appropriate reaction flow by the multi-channel flow control unit, the catalyst liquid after participating in the discharge is stirred to prevent sedimentation by the magnetic stirring unit, and the cooperation parameters of each unit are accurately and intelligently controlled by the intelligent control unit to ensure effective catalyst modification. The above six units constitute the intelligent multi-channel glow discharge device. Through the intelligent algorithm integrated control of the high-voltage power supply, the electrode position control unit and the multi-channel catalyst flow control unit, the power supply voltage, the power discharge time, the electrode spacing and the droplet size can be accurately controlled to realize the intelligent glow discharge reaction. The above units work together to constitute the intelligent multi-channel glow discharge device of the present application, which can realize high-precision intelligent control of the glow discharge catalytic reaction process, thereby improving the efficiency and uniformity of catalyst modification. BACKGROUND

[0002] Glow discharge is a process in which plasma is generated by ionizing a gas through applying high direct current voltage between electrode plates in a specific gas. During the discharge process, a unique glow is generated. Glow discharge plasma is a kind of low-pressure and low-temperature plasma. Due to the presence of a large number of high-energy ions such as electrons, ions and free radicals with active properties, energy is transferred to atoms and molecules through collision, causing dissociation and ionization. Moreover, the gas temperature is relatively low, which can avoid the damage to the structure of the catalyst and the sintering of the metal, so that this method is widely used in the production of catalysts. SUMMARY

[0003] In order to realize efficient, accurate and intelligent multi-channel glow discharge catalytic reaction, the present application provides an intelligent multi-channel glow discharge device, and the technical scheme is as follows:

[0004] An intelligent multi-channel glow discharge device, which comprises a high-voltage power supply unit, a positive electrode integrated unit, a negative electrode integrated unit and an electrode position control unit. A droplet flow control unit, a magnetic stirring unit and an intelligent control unit. The high-voltage power supply unit comprises a high-voltage direct current power supply. The positive electrode integrated unit is composed of a positive electrode bakelite insulation bottom plate, a positive electrode integrated copper bar, an embedded crown spring, a platinum wire electrode and a positive electrode bakelite insulation top plate. The negative electrode integrated unit comprises a negative electrode bakelite insulation bottom plate, a negative electrode integrated copper bar, an embedded crown spring, a quartz capillary tube, a hollow graphite rod, a negative electrode bakelite insulation top plate, an O ring, and a 500ml double-orifice beaker. The electrode position control unit comprises a precise double-track electric ball screw and a positive electrode fixed plate. The droplet flow control unit comprises a multi-channel adjustable flow peristaltic pump and a peristaltic pump connecting pipeline. The intelligent control unit comprises a flow monitoring device, an infrared distance meter, a temperature sensor, and an integrated PLC program control.

[0005] Further, the positive electrode integrated unit can integrate and install a multi-channel positive electrode bakelite insulation bottom plate, a positive electrode integrated copper bar, an embedded crown spring, a platinum wire electrode, and a positive electrode bakelite insulation top plate.

[0006] Further, the negative electrode integrated unit integrates and installs a negative electrode bakelite insulation bottom plate, a negative electrode integrated copper bar, an embedded crown spring, a quartz capillary tube, a hollow graphite rod, a negative electrode bakelite insulation top plate, an O ring, and a 500ml double-orifice beaker.

[0007] Further, the electrode position control unit controls the position of the positive electrode integrated unit through a precise double-track electric ball screw.

[0008] Further, the intelligent control unit integrates and intelligently controls a high-voltage direct-current power supply, a precise double-track electric ball screw, a multi-channel adjustable flow peristaltic pump, and a multi-union magnetic stirring platform through an integrated PLC program control.

[0009] Further, the intelligent control unit adopts a PLC integrated control and is equipped with multiple parameter acquisition units to collect real-time parameters, including droplet flow, discharge voltage, electrode distance, reaction temperature, and other parameters, to provide real-time feedback of reaction-related data and establish a fuzzy control algorithm to accurately adjust the reaction parameters of each channel.

[0010] Further, by collecting multiple parameters of each channel and combining specific fuzzy algorithms for control and adjustment, precise adaptive control is achieved by adjusting parameters such as droplet size, discharge voltage, discharge time, and electrode distance, and by using an infrared distance meter to cooperate with motor rotation time and screw thread pitch to form an independent algorithm for independent adjustment of each channel to ensure that each channel reaction reaches an optimal state.

[0011] Further, the control module of the device is configured to work according to the following control flow: starting a self-checking program to confirm the normal state of each unit; loading preset process parameters; starting a discharge reaction and entering an adaptive adjustment mode; optimizing the working parameters of each channel in real time; automatically executing a safety shutdown program after the process is completed; detecting the insulation and abnormal conditions of the system during operation, and automatically protecting power off when an abnormality occurs.

[0012] Further, it has a flexible channel usage method, which can run in single-channel mode, multi-channel mode or even expand on the basis of the current number of channels to realize real multi-channel simultaneous reaction.

[0013] Further, through electrode position detection and adaptive adjustment algorithm, dynamic and accurate control of electrode spacing is realized, and through multi-channel fluid monitoring and collaborative feedback mechanism, independent closed-loop adjustment of channel flow and droplet size is realized, and during the discharge process, voltage, current and fluid parameters are automatically adjusted according to real-time state signals, so as to realize efficient, intelligent, accurate and safe control of the glow discharge process.

[0014] Compared with the prior art, the beneficial effects of the present application are:

[0015] The high integration degree and voltage uniformity of the electrode structure are realized through the integrated design of the crown spring-copper bar;

[0016] The high-precision adjustment of the electrode spacing is realized by the cooperation of the double-rail ball screw and the infrared range finder;

[0017] The precise closed-loop control of the droplet flow is realized through the cooperation of the multi-channel independent peristaltic pump and the flow sensor;

[0018] The dynamic intelligent optimization of the discharge parameters is realized by introducing the fuzzy adaptive algorithm and the multi-channel collaborative feedback control;

[0019] The safety protection and abnormal response system is integrated to improve the reliability and safety of high-voltage operation;

[0020] The device can run in single-channel mode, multi-channel parallel or expanded mode, improving the experimental efficiency and application flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a general structure diagram of the intelligent multi-channel glow discharge device of the present application;

[0022] Figure 2 It is a detailed diagram of the electrode position control unit, the droplet flow control unit and the magnetic stirring unit;

[0023] Figure 3 It is an explosion diagram of the positive electrode integrated unit.

[0024] Figure 4 Installation schematic diagram of positive electrode integrated unit.

[0025] Figure 5 Explosive schematic diagram of negative electrode integrated unit.

[0026] Figure 6 Installation schematic diagram of negative electrode integrated unit.

[0027] Figure 7 Schematic diagram of the path of the droplet circulating flow in the device.

[0028] Figure 8 Workflow and modular architecture diagram of the intelligent control system, including data acquisition, algorithm processing and safety protection modules.

[0029] In the figure: 1, high-voltage power supply unit; 1.1, high-voltage direct current power supply; 2, positive electrode integrated unit; 2.1, positive electrode bakelite insulation bottom plate; 2.2, positive electrode integrated copper bar; 2.3, embedded crown spring; 2.4, platinum wire electrode; 2.5, positive electrode bakelite insulation top plate; 3, negative electrode integrated unit; 3.1, negative electrode bakelite insulation bottom plate; 3.2, negative electrode integrated copper bar; 3.3, embedded crown spring; 3.4, quartz capillary tube; 3.5, hollow graphite rod; 3.6, negative electrode bakelite insulation top plate; 3.7, O-ring; 3.8, 500ml double-orifice beaker; 4, electrode position control unit; 4.1, precise double-track electric ball screw; 4.2, positive electrode fixing plate; 5, droplet flow control unit; 5.1, multi-channel adjustable flow peristaltic pump; 5.2, peristaltic pump connecting pipeline; 6, magnetic stirring unit; 6.1, multi-union magnetic stirring platform; 7, intelligent control unit; 7.1, flow monitoring equipment; 7.2, infrared range finder; 7.3, temperature sensor. DETAILED DESCRIPTION

[0030] Example 1: The overall structure of the intelligent multi-channel glow discharge device is shown in Figure 1 The intelligent multi-channel glow discharge device of the present application includes: a high-voltage power supply unit 1; a positive electrode integrated unit 2; a negative electrode integrated unit 3; an electrode position control unit 4; a droplet flow control unit 5; a magnetic stirring unit 6; and an intelligent control unit 7.

[0031] The high-voltage power supply unit 1 comprises a high-voltage direct current power supply 1.1, which provides stable high-voltage direct current for the whole device. The positive electrode integrated unit 2 and the negative electrode integrated unit 3 integrate the positive electrode and the negative electrode of the glow discharge respectively, so as to realize compact structure, safe insulation and convenient operation. The electrode position control unit 4 can accurately adjust the distance between the positive electrode and the negative electrode, so as to ensure the uniformity of the discharge. The liquid droplet flow control unit 5 comprises a multi-channel adjustable flow peristaltic pump 5.1 and a peristaltic pump connecting pipeline 5.2, which can deliver liquid droplets to the reaction position at an appropriate flow rate to form a circulation loop. The magnetic stirring unit 6 prevents the liquid droplets from settling and improves the uniformity of the reaction through a multi-union magnetic stirring platform 6.1. The intelligent control unit 7 realizes accurate intelligent control of each unit through a PLC control program, so as to reduce human operation errors.

[0032] Example 2: Structure and installation of the positive electrode integrated unit, as shown in Figure 3 、 4 The positive electrode integrated unit 2 is composed of the following components: a positive electrode bakelite insulation bottom plate 2.1, a positive electrode integrated copper bar 2.2, an embedded crown spring 2.3, a platinum wire electrode 2.4 and a positive electrode bakelite insulation top plate 2.5. The installation steps are as follows: insert the embedded crown spring 2.3 into the corresponding hole position on the positive electrode bakelite insulation bottom plate 2.1; fix the positive electrode integrated copper bar 2.2 on the bottom plate 2.1 through bolts according to the groove position, and at the same time, press the embedded crown spring 2.3 to realize electrical contact conduction; insert the platinum wire electrode 2.4 into the embedded crown spring 2.3, and the embedded crown spring structure not only fixes the platinum wire electrode, but also ensures voltage conduction; cover the bottom plate and the components with the positive electrode bakelite insulation top plate 2.5, and fix them through bolts, so as to avoid exposure of high-voltage components and ensure operation safety. Through the above integration, the voltage of each channel of the positive electrode is evenly distributed, and the insulation and safety can be realized outside, so as to ensure stable and reliable glow discharge.

[0033] Structure and installation of the negative electrode integrated unit, as shown in Figure 5 、 6As shown, the negative electrode integrated unit 3 includes: a negative electrode bakelite insulation bottom plate 3.1, a negative electrode integrated copper bar 3.2, an embedded crown spring 3.3, a quartz capillary tube 3.4, a hollow graphite rod 3.5, a negative electrode bakelite insulation top plate 3.6, an O-ring 3.7, a 500ml double-orifice beaker 3.8. The installation steps are as follows: install the O-ring 3.7 on the bottom plate 3.1, and fix the 500ml double-orifice beaker 3.8 on the bottom plate 3.1; insert the embedded crown spring 3.3 into the corresponding hole position of the bottom plate 3.1; insert the hollow graphite rod 3.5 into the hole position of the bottom plate, so that it is coaxial with the embedded crown spring 3.3; fix the negative electrode integrated copper bar 3.2 on the bottom plate 3.1 by bolts, and at the same time, press the hollow graphite rod 3.5 to realize electrical conduction; pass the quartz capillary tube 3.4 through the hollow graphite rod, and use the embedded crown spring to fix the liquid drop reaction position; cover the top plate 3.6 on the bottom plate and the components, and fix the bolts to avoid exposing the high-voltage components and ensure safety. Through this structure, the negative electrode loop is completely connected, which is convenient to adjust and use, and the circulation and collection of liquid drops are very convenient. The liquid drop circulation is smooth and adjustable, and the operation is safe and reliable.

[0034] Droplet flow control, such as Figure 7 As shown, the multi-channel adjustable flow peristaltic pump 5.1 sucks liquid drops from the 500ml double-orifice beaker 3.8 through the peristaltic pump connecting pipeline 5.2, and flows through the capillary quartz tube 3.4 to the discharge reaction position. The reacted liquid drops return to the 500ml double-orifice beaker 3.8 along the gap between the outer wall of the quartz capillary tube 3.4 and the hollow graphite rod 3.5, and at the same time, prevent sedimentation through the multi-magnetic stirring platform 6.1 to realize circulation reaction. The liquid drops flow from the peristaltic pump outlet pipeline through the beaker orifice to the quartz capillary tube, return to the inside of the beaker after participating in the reaction at the top end of the quartz capillary tube, pass through the pipeline through the other orifice of the beaker, and flow to the peristaltic pump inlet to form a cycle. The intelligent control system can adjust the flow, droplet size, generation interval and circulation speed in real time, and accurately control the multi-channel fluid through the control unit 7; the whole process is automatically operated in a semi-sealed environment without manual contact, which is efficient and safe.

[0035] Intelligent control system, such as Figure 8As shown, the intelligent control unit 7 adopts a PLC controller, which includes: a data acquisition module for real-time monitoring of the flow, voltage, current and temperature of each channel; an algorithm processing module for running an adaptive control algorithm to automatically adjust the flow and discharge parameters; and a safety monitoring module for continuously monitoring the insulation state and abnormal conditions to realize automatic alarm and shutdown mechanism. In the first step, the reaction starts; in the second step, the system starts with preset settings; in the third step, each component feedbacks the reaction parameters (voltage, flow, position, temperature, insulation); in the fourth step, each parameter is evaluated, if the insulation feedback value and the temperature feedback value are abnormal, the system stops, adjusts the remaining parameter values through intelligent algorithm and monitors the reaction parameters, if the adjusted values exceed the preset safety value, the system stops, if the reaction is optimized after adjustment, the system continues the reaction until the test is completed. Through the above control, high-precision intelligent operation of the entire device is realized, the catalyst modification efficiency is improved, and the experimental safety is ensured.

[0036] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An intelligent multi-channel glow discharge device, the glow discharge device comprising: a high-voltage power supply unit (1), a positive electrode integrated unit (2), a negative electrode integrated unit (3), an electrode position control unit (4), a liquid droplet flow control unit (5), a magnetic stirring unit (6), an intelligent control unit (7); the high-voltage power supply unit (1) comprises a high-voltage DC power supply (1.1); the positive electrode integrated unit (2) is composed of a positive electrode bakelite insulation bottom plate (2.1), a positive electrode integrated copper bar (2.2), an embedded crown spring (2.3), a platinum wire electrode (2.4), and a positive electrode bakelite insulation top plate (2.5); the negative electrode integrated unit (3) comprises a negative electrode bakelite insulation bottom plate (3.1), a negative electrode integrated copper bar (3.2), an embedded crown spring (3.3), a quartz capillary tube (3.4), a hollow graphite rod (3.5), a negative electrode bakelite insulation top plate (3.6), an O-ring (3.7), and a 500ml double-beaked beaker (3.8); the electrode position control unit (4) comprises a precise double-track electric ball screw (4.1) and a positive electrode fixing plate (4.2); the liquid droplet flow control unit (5) comprises a multi-channel adjustable flow peristaltic pump (5.1) and a peristaltic pump connecting pipeline (5.2); the magnetic stirring unit (6) comprises a multi-union magnetic stirring platform (6.1); the intelligent control unit (7) comprises a flow monitoring device (7.1), an infrared distance meter (7.2), a temperature sensor (7.3), and an integrated PLC program control.

2. The intelligent multi-channel glow discharge device of claim 1, wherein: The positive electrode integrated unit (2) can integrate and install the multi-channel positive electrode bakelite insulation bottom plate (2.1), the positive electrode integrated copper bar (2.2), the embedded crown spring (2.3), the platinum wire electrode (2.4), and the positive electrode bakelite insulation top plate (2.5).

3. The intelligent multi-channel glow discharge device of claim 1, wherein: The negative electrode integrated unit (3) integrates and installs the negative electrode bakelite insulation bottom plate (3.1), the negative electrode integrated copper bar (3.2), the embedded crown spring (3.3), the quartz capillary tube (3.4), the hollow graphite rod (3.5), the negative electrode bakelite insulation top plate (3.6), the O-ring (3.7), and the 500ml double-beaked beaker (3.8).

4. The intelligent multi-channel glow discharge device of claim 1, wherein: The electrode position control unit (4) controls the position of the positive electrode integrated unit (2) through the precise double-track electric ball screw (4.1).

5. The intelligent multi-channel glow discharge apparatus of claim 1, wherein: The intelligent control unit (7) integrates and intelligently controls the high-voltage DC power supply (1.1), the precise double-track electric ball screw (4.1), the multi-channel adjustable flow peristaltic pump (5.1), and the multi-union magnetic stirring platform (6.1) through the integrated PLC program control.

6. The intelligent multi-channel glow discharge apparatus of claim 1, wherein: The intelligent control unit (7) adopts PLC integrated control, is equipped with multiple parameter acquisition units, and can real-time collect various parameters, including liquid droplet flow, discharge voltage, electrode distance, reaction temperature, and other parameters, can real-time feedback various reaction related data, and can establish a fuzzy control algorithm by collecting reaction parameters to accurately adjust the reaction parameters of each channel.

7. The intelligent multi-channel glow discharge apparatus of claim 1, wherein: By collecting multiple parameters of each channel, combined with specific fuzzy algorithm for control and adjustment, precise adaptive control is realized. Specifically, by adjusting the droplet size, discharge voltage, discharge time and electrode distance, etc. parameters, and using infrared range finder to cooperate with motor rotation time and screw thread pitch to form an independent algorithm, each channel is independently adjusted to ensure that each channel reaction reaches the optimal state.

8. The intelligent multi-channel glow discharge apparatus of claim 1, wherein: The control module of the device is configured to work according to the following control flow: start the self-checking program to confirm that each unit is in normal state; Load the preset process parameters; start the discharge reaction and enter the adaptive adjustment mode; optimize the working parameters of each channel in real time; automatically execute the safety shutdown program after the process is completed; detect the insulation and abnormal conditions of the system during operation, and automatically power off when an abnormality occurs.

9. The intelligent multi-channel glow discharge apparatus of claim 1, wherein: It has flexible channel usage method, which can run in single channel or multiple channels, or even expand on the basis of the current number of channels to realize real multi-channel simultaneous reaction.

10. The intelligent multi-channel glow discharge apparatus of claim 1, wherein: Through electrode position detection and adaptive adjustment algorithm, dynamic and accurate control of electrode distance is realized. Combined with multi-channel fluid monitoring and cooperative feedback mechanism, independent closed-loop adjustment of each channel flow and droplet size is realized. During the discharge process, the voltage, current and fluid parameters are automatically adjusted according to the real-time state signal, so as to realize efficient, intelligent, precise and safe control of the glow discharge process.

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