CN105381693B

CN105381693B - Explosion-proof plasma

Info

Publication number: CN105381693B
Application number: CN201410449115.9A
Authority: CN
Inventors: 洪昆喨
Original assignee: SUZHOU DINGDEDIAN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Current assignee: SUZHOU DINGDEDIAN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Priority date: 2014-09-04
Filing date: 2014-09-04
Publication date: 2019-12-31
Anticipated expiration: 2034-09-04
Also published as: TWI566824B; TW201609236A; WO2016034155A2; WO2016034155A3; CN105381693A

Abstract

The invention provides explosion-proof plasma which comprises a catalyst carrier and an explosion-proof containment, wherein the explosion-proof containment is covered on the side surface of the catalyst carrier to form a closed discharge cavity, a fixed pressing plate, a PCB discharge plate uniformly distributed with discharge needles and a grid supporting plate are sequentially arranged in the discharge cavity, the PCB discharge plate is fixed on the side surface of the catalyst carrier through the grid supporting plate, the distance between the discharge needles and the side surface of the catalyst carrier is 0.1 mm to 10 mm, and the fixed pressing plate is arranged between the inner wall surface of the explosion-proof containment and the PCB discharge plate and is used for pressing the PCB discharge plate to the grid supporting plate. Through setting up inclosed discharge cavity, the combustible gas who mixes the air can not get into the discharge cavity, even if the discharge needle of PCB discharge panel releases the electric spark, can not detonate combustible gas yet.

Description

Explosion-proof plasma

Technical Field

The invention relates to the field of kitchen purification, in particular to explosion-proof plasma.

Background

With the development of science and technology and economy, people have higher and higher requirements on the environment. In order to create a fresh and clean living and working environment, research and development personnel in the purification field have proposed various purification technologies and produced corresponding purification devices, such as adsorption purification technologies (activated carbon filter screens, photocatalyst filter screens), ultraviolet lamp sterilization technologies (ultraviolet lamps), air filtration purification technologies, ozone sterilization technologies, negative ion air purification technologies (negative ion purifiers), electrostatic precipitation technologies (electrostatic precipitators), and low-temperature plasma technologies (plasma purifiers).

However, the above-mentioned conventional techniques for treating air pollution cannot effectively remove soot and exhaust gas, and thus are not suitable for use in kitchen environments. In order to effectively remove the soot exhaust gas, researchers in the field of purification have proposed dielectric plasma and nano-plasma purification technologies, such as engine soot decomposition device (patent application No. CN201210387337.3) and combined soot discharge reactor (patent application No. CN201220203882.8), which are developed and commercially available from wangde technologies ltd. The medium plasma and the nano plasma supplement each other to sterilize, deodorize, decompose VOCs and settle particles in the air in the kitchen space, purify the air in the kitchen and improve the quality of the air in the kitchen.

However, in an environment with high concentration of organic gas or flammable and explosive gas, such as a closed kitchen environment, a mine, a letter cave or a tunnel, the purification working conditions of oil smoke gas and gas have a deflagration phenomenon, and combustion and explosion are caused in serious conditions, so that the safety of people is damaged. Therefore, it is necessary to improve the dielectric plasma and the nano-plasma to be suitable for the above working conditions.

Disclosure of Invention

The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the dielectric plasma and nano-plasma in the prior art, and to provide an explosion-proof plasma which is not deflagrated and is suitable for use in the living and production environments such as enclosed kitchen environment, industrial waste gas environment, mine, letter hole or tunnel.

The invention solves the technical problems through the following technical scheme:

the utility model provides an explosion-proof electric pulp, its characterized in that, this explosion-proof electric pulp is including a catalyst carrier and an explosion-proof containment, this explosion-proof containment is located on the side surface of this catalyst carrier and is formed inclosed discharge cavity, set gradually a fixed pressing plate in this discharge cavity, PCB discharge plate and a grid backup pad that the equipartition has the discharge needle, this PCB discharge plate is fixed in on the side surface of this catalyst carrier through this grid backup pad, 0.1 millimeter to 10 millimeters are apart from the side surface of these discharge needles and this catalyst carrier, this fixed pressing plate sets up between the internal face of this explosion-proof containment and this PCB discharge plate for extrude this PCB discharge plate to this grid backup pad.

Preferably, the explosion-proof plasma further comprises an explosion-proof junction box, a plasma shell and a plasma cover plate, the plasma cover plate is buckled on the plasma shell to form a purification cavity, the explosion-proof containment vessel and the catalyst carrier are arranged in the purification cavity, an air inlet of the plasma shell, a purification core of the catalyst carrier and an air outlet of the plasma shell are communicated with each other in sequence, the explosion-proof junction box is fixed on the plasma cover plate, and the explosion-proof junction box is used for collecting power supply leads of the PCB discharge board. The explosion-proof junction box can be a BXJ-20 type safety-increasing explosion-proof junction box produced by the Ministry of Security and protection explosion electric company Limited in Leqing.

Preferably, the sealing port between the catalyst carrier and the explosion-proof containment vessel is encapsulated by flame-retardant epoxy resin, and the sealing port between the plasma shell and the plasma cover plate is encapsulated by flame-retardant epoxy resin. The explosion-proof containment vessel, the plasma shell and the plasma cover plate can be made of high-insulation materials, such as flame-retardant epoxy resin, aramid fiber, polytetrafluoroethylene, polyvinyl chloride, silica gel and the like, so as to ensure that the medium discharge reactor has no charge leakage.

Preferably, a return frame is fixed at the air inlet of the purification core and the air outlet of the purification core, and sealing ports between the return frames and the explosion-proof containment vessel are encapsulated by flame-retardant epoxy resin. The flame-retardant epoxy resin can bear 1800V voltage, is durable and cannot be punctured, and the encapsulating thickness is larger than 4mm, so that a high-voltage power supply and a dielectric discharge reactor do not discharge outwards, the explosion-proof performance of the power supply can be ensured for a long time, and the possibility of discharge and ignition is avoided.

Preferably, four electricity-isolating guardrails are further arranged in the purification cavity, two electricity-isolating guardrails in the electricity-isolating guardrails are arranged at the air inlet of the purification core, the other two electricity-isolating guardrails in the electricity-isolating guardrails are arranged at the air outlet of the purification core, the electricity-isolating guardrails are provided with a vent, the vents of the two adjacent electricity-isolating guardrails are staggered, and creepage steps are arranged at the vents.

Preferably, the air inlet of the plasma casing and the air outlet of the plasma casing are both provided with an insertion groove and a safety net, and the safety nets are inserted into the insertion grooves.

The positive progress effects of the invention are as follows: through setting up inclosed discharge cavity, the combustible gas who mixes the air can not get into the discharge cavity, even if the discharge needle of PCB discharge panel releases the electric spark, can not detonate combustible gas yet, in addition, these some discharge needles are 0.1 millimeter to 10 millimeters apart from the side surface of this catalyst carrier, can form secondary discharge, and the discharge needle forms point discharge promptly, and then indirectly triggers the inside same electric property of formation of catalyst carrier, high density and even ion crowd.

Drawings

FIG. 1 is a schematic diagram of an explosion-proof plasma structure according to a preferred embodiment of the present invention.

FIG. 2 is a schematic structural diagram of the plasma-protected cover plate of FIG. 1 after being removed.

FIG. 3 is a schematic diagram of a structure of a discharge core of the explosion-proof plasma of FIG. 1.

FIG. 4 is a partial schematic view of the explosion-proof plasma of FIG. 2.

Plasma housing: 1, a clip frame: 2

Catalyst carrier: 3, PCB discharging board: 4

Fixing a pressing plate: 5, explosion-proof containment vessel: 6

Isolating the electric guardrail: 7, safety net: 8

Plasma cover plate: 9, explosion-proof junction box: 10

And (3) filling a sealing strip: 11, potting strip: 12

Inserting grooves: 14 grid support plate: 15

A discharge needle: 41 air vent: 70

Step climbing: 71

Detailed Description

The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.

The structure of the explosion-proof plasma of this embodiment is as follows:

please refer to fig. 1-3, the explosion-proof plasma of the present embodiment includes a catalyst carrier 3 and an explosion-proof containment 6, the explosion-proof containment 6 is covered on a side surface of the catalyst carrier 3 and forms a closed discharge cavity, a fixed pressing plate 5, a PCB discharge plate 4 with uniformly distributed discharge needles and a grid supporting plate 15 are sequentially disposed in the discharge cavity, the PCB discharge plate 4 is fixed on the side surface of the catalyst carrier 3 through the grid supporting plate 15, the distance between the discharge needles 41 and the side surface of the catalyst carrier 3 is 0.1 mm to 10 mm, in actual production, 4.5 mm, 5 mm or 5.5 mm may be selected, and the fixed pressing plate 5 is disposed between an inner wall surface of the explosion-proof containment 6 and the PCB discharge plate 4 for pressing the PCB discharge plate 4 against the grid supporting plate 15.

The explosion-proof plasma also comprises an explosion-proof junction box 10, a plasma shell 1 and a plasma cover plate 9, wherein the plasma cover plate 9 is buckled on the plasma shell 1 to form a purification cavity, the explosion-proof containment vessel 6 and the catalyst carrier 3 are arranged in the purification cavity, an air inlet of the plasma shell 1, a purification core of the catalyst carrier 3 and an air outlet of the plasma shell 1 are communicated with each other in sequence, the explosion-proof junction box 10 is fixed on the plasma cover plate 9, and the explosion-proof junction box 10 is used for collecting power supply leads of the PCB discharge plate 4.

The sealing port between the catalyst carrier 3 and the explosion-proof containment vessel 6 is encapsulated by flame-retardant epoxy resin, specifically, a return frame 2 is fixed at the air inlet of the purification core of the catalyst carrier 3 and the air outlet of the purification core of the catalyst carrier 3, and the sealing port between the return frames 2 and the explosion-proof containment vessel 6 is encapsulated by flame-retardant epoxy resin, which is understood by referring to the encapsulation strip 11 in fig. 4. The sealing opening between the plasma housing 1 and the plasma cover plate 9 is also encapsulated with flame retardant epoxy, as will be understood with reference to the encapsulating tape 12 in fig. 4.

Please refer to fig. 2 and fig. 4, four electricity-isolating guardrails 7 are further disposed in the purification cavity, two of the electricity-isolating guardrails 7 are disposed at the air inlet of the purification core of the catalyst carrier 3, the other two of the electricity-isolating guardrails 7 are disposed at the air outlet of the purification core of the catalyst carrier 3, the electricity-isolating guardrails 7 are both provided with a vent 70, the vents of the two adjacent electricity-isolating guardrails 7 are staggered, and the vents 70 are both provided with creepage steps 71.

As will be understood from fig. 4, the air inlet of the plasma housing 1 and the air outlet of the plasma housing 1 are both provided with a plugging slot 14 and a safety net 8, and the safety nets 8 are plugged into the plugging slots 14.

The working principle of the explosion-proof plasma of the present embodiment is as follows:

as will be understood from fig. 1 to 4, organic gas (oil smoke waste gas or gas) is introduced into the air inlet of the plasma housing 1 by the blower motor, and the organic gas flows through the ventilation openings 70 of the electricity-isolating guard rail 7 to enter the catalyst carrier 3, so as to indirectly trigger the catalyst carrier 3 to generate high-density and uniform ion groups with the same electrical property, and thus the problem of arc deflagration of organic gas is not generated. In addition, the explosion-proof containment vessel 6 is covered on the side surface of the catalyst carrier 3 and forms a closed discharge cavity, which can not only prevent combustible gas from entering the discharge cavity, but also prevent electric arc of point discharge from being introduced into the catalyst carrier 3, so that the explosion-proof containment vessel is free from explosion phenomenon and suitable for working conditions of closed kitchen environment, mine, letter hole or tunnel and the like. The decomposed organic gas is discharged from the outlet of the plasma housing 1.

The explosion-proof plasma of the present embodiment has the following technical effects:

firstly, combustible gas cannot be detonated, on one hand, the combustible gas mixed with air cannot enter the discharge cavity by arranging the closed discharge cavity, even if electric sparks are released by discharge needles of the PCB discharge board, the combustible gas cannot be detonated, in other words, micro-discharge without temperature rise is generated between high voltage of the discharge reactor and organic gas, and no sound, no light or no ozone is generated; on the other hand, the distance between the discharge needles and the side surface of the catalyst carrier is 0.1 mm to 10 mm, so that secondary discharge can be formed, namely, the discharge needles form point discharge, and further, the same electric property, high density and uniform ion groups are indirectly generated in the catalyst carrier.

Secondly, the sealing is firm and can not be leaked, the sealing port between the catalyst carrier and the explosion-proof containment vessel and the sealing port between the plasma shell and the plasma cover plate are encapsulated by adopting the flame-retardant epoxy resin, so that organic gas can be prevented from permeating into a discharge cavity from a gap of the sealing port, plasma can also be prevented from being leaked from the gap, the sealing tightness, the electric insulation property and the heat resistance of the sealing port can be ensured by sealing with the flame-retardant epoxy resin, and the high-voltage discharge device is suitable for a high-voltage discharge environment. Under the sealed and isolated structure, no fresh air is contacted with the electrode, the electrode is not oxidized, and the discharge effect is kept; however, in the purification chamber, there is no discharge flame, and only a large amount of high-speed ions are generated, so that there is no possibility of combustion and deflagration even if the concentration of the organic gas is higher.

Thirdly, a high-voltage electric field is restrained, the length of explosion-proof plasma is shortened, and vent holes of two adjacent electricity-isolating guardrails are staggered with each other, so that organic gas can be smoothly introduced; the vent department sets up creepage ladder, can retrain high-tension electric field, increases behind the electric fence that separates, and explosion-proof electric thick liquid's length can shorten to the two-thirds of former length still can not reveal electric thick liquid.

Fourthly, no spark and ozone are generated, please understand with reference to fig. 3, in order to test the purification capability of the metal particles with different particle sizes, a plurality of steel balls with a diameter of 3 mm to 5 mm are uniformly distributed in the purification core of the catalyst carrier 3, the voltage of the actual test direct current power supply is 200KV, the distance between the discharge electrode and the catalyst carrier is about 2mm, and the catalyst carrier still has no discharge sound and no electric spark, in other words, the explosion-proof plasma of the embodiment can also be applied to the purification of the metal dust particles generated in the factory.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The utility model provides an explosion-proof electric pulp, its characterized in that, this explosion-proof electric pulp is including a catalyst carrier and an explosion-proof containment, this explosion-proof containment is located on the side surface of this catalyst carrier and is formed inclosed discharge cavity, set gradually a fixed pressing plate in this discharge cavity, PCB discharge plate and a grid backup pad that the equipartition has the discharge needle, this PCB discharge plate is fixed in on the side surface of this catalyst carrier through this grid backup pad, 0.1 millimeter to 10 millimeters are apart from the side surface of this catalyst carrier to these some discharge needles, this fixed pressing plate sets up between the internal face of this explosion-proof containment and this PCB discharge plate for extrude this PCB discharge plate to this grid backup pad.

2. The explosion-proof plasma as claimed in claim 1, wherein the explosion-proof plasma further comprises an explosion-proof junction box, a plasma housing and a plasma cover plate, the plasma cover plate is fastened on the plasma housing and forms a purification cavity, the explosion-proof containment vessel and the catalyst carrier are both disposed in the purification cavity, the air inlet of the plasma housing, the purification core of the catalyst carrier and the air outlet of the plasma housing are sequentially communicated with each other, the explosion-proof junction box is fixed on the plasma cover plate, and the explosion-proof junction box is used for collecting the power supply wires of the PCB discharge board.

3. An explosion-proof plasma as recited in claim 2 wherein the seal between said catalyst carrier and said explosion-proof containment vessel is encapsulated in flame-retardant epoxy resin and the seal between said plasma housing and said plasma lid is encapsulated in flame-retardant epoxy resin.

4. The explosion-proof plasma as recited in claim 3, wherein a frame is fixed at the air inlet of the purification core and at the air outlet of the purification core, and the sealing ports between the frame and the explosion-proof containment are encapsulated by flame-retardant epoxy resin.

5. The explosion-proof plasma as claimed in any one of claims 2-4, wherein four electricity-isolating guardrails are further disposed in the purifying chamber, two of the electricity-isolating guardrails are disposed at the air inlet of the purifying core, the other two electricity-isolating guardrails are disposed at the air outlet of the purifying core, each of the electricity-isolating guardrails is provided with a ventilation opening, the ventilation openings of two adjacent electricity-isolating guardrails are staggered, and each of the ventilation openings is provided with a creepage step.

6. The plasma of claim 2, wherein the air inlet of the plasma housing and the air outlet of the plasma housing are each provided with a slot and a safety net, and the safety nets are inserted into the slots.