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Double-medium low-temperature plasma generator

A low-temperature plasma and dual-media technology, which is applied in the direction of plasma and electrical components, can solve the problems of large volume and increased vehicle weight, and achieve the effects of uniform distribution, reduced deposition, and avoided corrosion

Inactive Publication Date: 2014-12-17
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The SCR system is a relatively mature NOx treatment technology. The disadvantage is that it has a large volume and increases the weight of the vehicle. It is necessary to consider the layout of the after-treatment system on the vehicle.

Method used

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Embodiment Construction

[0023] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] A double dielectric barrier discharge low-temperature plasma generator of the present invention, its axial section structure and overall three-dimensional structure are respectively as follows figure 1 and figure 2 Shown: Including intake pipe 1, cast iron plug Ⅰ 2, low-voltage electrode 3, quartz glass inner tube 4, quartz glass outer tube 5, high-voltage electrode 6, cast iron plug Ⅱ 7, exhaust pipe 8. The local structure of the generator is as image 3 As shown, the internal local structure of the cast iron plug I2 is as follows Figure 4 shown.

[0025] The device of the present invention adopts a coaxial structure, and the cast iron plug I2 and the cast iron plug II7 are symmetrically nested at both ends of the quartz glass inner tube 4 and the quartz glass outer tube 5, and the quartz glass inner tube 4 and the quar...

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Abstract

The invention discloses a double-medium low-temperature plasma generator, which comprises two end plugs with annular grooves inside, reduces a back pressure of an air intake pipe, enables gas flow to be smoother, and prevents a harmful gas from corroding an electrode as a discharge gap is composed by two layers of quartz glass tubes. The scheme of the double-medium low-temperature plasma generator is as follows: when a gas enters into the end plugs from the air intake pipe, the gas is firstly full of the annular grooves, and further uniformly enters into a discharge region, so that circulation performance and uniformity of the gas are improved, and blockage of the inner parts of the end plugs due to particle deposition is avoided; the discharge region is located between the two layers of the quartz tubes, and the gas flows through the discharge region and does not contact directly with the electrode, so that electrode corrosion is avoided. The double-medium low-temperature plasma generator can be widely applied to the field of harmful emission control of engines.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to the field of improving harmful gas emission of engines by using low-temperature plasma technology. Background technique [0002] With the increase of the number of motor vehicles, air pollution is becoming more and more serious. Today, various countries have implemented stricter emission regulations on motor vehicle emissions, and many exhaust gas treatment technologies have emerged as the times require. [0003] At present, EGR is an effective way to reduce diesel engine NO x One of the methods of emission. Although using EGR technology, NO x Emissions are effectively suppressed; however, since the exhaust gas occupies part of the fresh charge, the intake oxygen content decreases, resulting in an increase in PM emissions. [0004] The SCR system is a relatively mature NOx treatment technology. The disadvantage is that it has a large volume and in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/24
Inventor 王军李超唐炜
Owner JIANGSU UNIV
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