Unit module for constructing stacked structure type low-temperature plasma reaction body

Abstract

The invention relates to a unit module for constructing a stacked structure type low-temperature plasma reaction body and belongs to the technical field of ozone production. A water cooling channel is respectively arranged in an upper ground electrode and a lower ground electrode in the unit module; and the two sides of the upper ground electrode and the two sides of the lower ground electrode respectively form working surfaces. Enclosure frames are fixed by bosses at the two end parts of the upper ground electrode and the two end parts of the lower ground electrode and are enclosed after being fixed by bosses of an adjacent ground electrode to form an enclosed cavity; the working surfaces of dielectric plates are tightly attached onto the working surfaces of the ground electrodes throughsupporting dielectric wires, and a working clearance is formed between the working surface of each dielectric plate and the working surface of each ground electrode. The supporting dielectric wires, the dielectric plates, an upper high-voltage electrode and a lower high-voltage electrode form two high-voltage components; and elastic dielectric fillings press the two high-voltage components on theworking surfaces of the corresponding upper ground electrode and the corresponding lower ground electrode. A high-voltage terminal is fixed on the enclosure frame; and the two ends of each of two high-pressure leads are respectively connected with the upper high-voltage electrode and the lower high-voltage electrode, and the high-voltage terminal. The unit module has the beneficial effects that the structure is simple and reasonable; the ozone synthesis efficiency is improved; and moreover, the high sealing reliability is good, the weight of the whole machine is light, and the equipment cost is low.

Description

technical field [0001] The invention relates to a unit module for building a stacked low-temperature plasma reactant, and more specifically relates to a discharge unit modular structure for a large-scale equipment for producing ozone in a dielectric barrier silent discharge (DBD) manner, belonging to Ozone production technology field. Background technique [0002] The ozone generator is a system equipment that uses low-temperature plasma technology to produce ozone. Ozone has a wide application market prospect in water treatment, green chemical oxidation industrial process, sterilization and disinfection, medical care and other fields. [0003] Japan's Mitsubishi Electric CN1421380A, CN1421382A, CN1491884A and other patents, the main structure of the plate discharge of the ozone generator is a bell type, that is, the pressure-bearing inner cavity is used as a part of the airway, and the discharge discharge composed of several high and low voltage electrodes and dielectric p...

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is that it is difficult to compact the design; and as long as one of them fails during work, it must be parked and opened for maintenance, which is not conducive to the stability and reliability of the system.

[0005] Question 1. "Ceramic sheet dielectric 8 is attached to the two planes of the ground electrode 7" - since most of the discharge energy provided by the power supply is turned into heat, the balance point of ozone synthesis / decomposition must be pushed to the positive On one side of the reaction, to ensure the continuity and efficiency of ozone synthesis, a large amount of heat energy needs to be exported in time by the aluminum alloy water-cooled ground electrode with good thermal conductivity

However, all the heat flow generated at this time is blocked by the relatively poor thermal conductivity "ceramic sheet dielectric 8" attached to the two ends of the ground electrode, coupled with the thermal resistance of the adhesive between the two, so the structure is difficult to obtain. The best heat dissipation effect is based on the fact that ozone synthesis is sensitive to temperature conditions, so this structure makes it difficult to achieve ideal ozone synthesis efficiency

[0006] Question 2. It can be seen from the combined structure that the sealing pressure exerted by the discharge gas chamber is perpendicular to the plane of the ground electrode, and the vertical sealing pressure at both ends of the end seal 13 depends on the lateral elastic deformation of the sealing elastic material after compression , this kind of discontinuity on the vertical surface of the sealing pressure, which is taboo in the sealing design, greatly reduces the reliability of the sealing structure

[0007] Question 3. The discharge gas chamber is sealed by the polymer material structure exposed to high concentration ozone and strong plasma bombardment in a large area. The life of the polymer material itself under extremely harsh aging conditions makes the reliability and life of the continuous operation of the ozone generator are greatly restricted

[0008] Question 4. Due to the good electrical and heat conduction characteristics of the low-temperature plasma itself, there are already large vertical and large-area good heat conduction channels, which greatly reduces the structural heat conduction effect of the narrow horizontal heat conduction channels of the heat conduction gasket, and consumes a lot of material energy resources. Need for improvement

[0009] Question 5. The sealing pressure exerted by the discharge chamber and the pressure to maintain the discharge air gap are from the same source. The requirements for the material and performance of the two are quite different. However, this structure requires exquisite consideration to meet the performance requirements.

In this way, the design, production, installation and commissioning of industrial products manufactured in large quantities will be complicated and difficult to control stably.

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