CN102607057B - Automatic air flow adjusting device for prolonging service life of plasma tube type cathode - Google Patents
Automatic air flow adjusting device for prolonging service life of plasma tube type cathode Download PDFInfo
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- CN102607057B CN102607057B CN201210111037.2A CN201210111037A CN102607057B CN 102607057 B CN102607057 B CN 102607057B CN 201210111037 A CN201210111037 A CN 201210111037A CN 102607057 B CN102607057 B CN 102607057B
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- compressed gas
- compressed air
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Abstract
The invention provides an automatic air flow adjusting device for prolonging the service life of a plasma tube type cathode, which belongs to the field of pulverized coal kiln equipment. An annular upper limit and an annular lower limit of a cathode discharging region are arranged on the inner wall face of the tube type cathode, so as to form the tube type cathode discharging region; one end of a direct-current compressed air conveying pipe with a direct-current compressed air adjusting valve is communicated with a direct-current compressed air inlet on a direct-current compressed air insulating sealing sleeve; a direct-current air adjusting valve control cable is used for connecting a computer compressed air pressure-adjusting cabinet with the direct-current compressed air adjusting valve; one end of a cathode compressed air conveying pipe equipped with a cyclone compressed air adjusting valve is communicated with a compressed air flow cyclone device on a sealing cover; and a cyclone air adjusting valve control cable is used for connecting the computer compressed air pressure-adjusting cabinet with the cyclone compressed air adjusting valve. The device disclosed by the invention is simple and reasonable and high in automation degree, and the plasma tube type cathode is long in service life and reliable in use.
Description
Technical field
The invention belongs to coal dust furnace equipment, and kiln device is dried in the igniting relating generally on a kind of coal dust kiln.
Background technology
In the process of moving continuously at plasma-arc, negative electrode scaling loss is the key issue that affects plasma generator service life.Common board-like negative electrode, rod-type negative electrode accumulative total service life are no more than 50 hours, Chinese patent: 200420063609 disclosed a kind of tubular type cathode ion rifles, compare with board-like negative electrode, rod-type negative electrode, tubular type negative electrode has advantages of has increased the region of discharge of negative electrode, plasma gun negative electrode service life can be over 100 hours.Through high-speed motion picture camera, the shooting of arc discharge motion track is analyzed and found, under tubular type cathode arc continuous discharge state, cathodic discharge district carries out so that circular path is in rotary moving in the radial position of tubular type negative electrode inwall, corresponding fixing at axial location, the region of discharge of tubular type negative electrode only limits to a circle ring area at 5-10mm at tubular type negative electrode inwall axial width, larger can not be effectively utilized by region of discharge, causes to reach and to surpass the target of 200 hours the service life of tubular type negative electrode.
Summary of the invention
The object of the invention is exactly the problem existing for above-mentioned prior art, design provides a kind of plasma tubular type negative electrode air-flow self-checking device in service life that extends, and reaches to alleviate tubular type negative electrode inwall region of discharge high temperature scaling loss, significantly extend tubular type negative electrode service life, reduce use cost, reduce the object that maintenance is changed number of times, improved operating efficiency.
The object of the present invention is achieved like this: a kind of plasma tubular type negative electrode air-flow self-checking device in service life that extends, in the opposite end portion of direct current compressed gas insulated enclosure cover, be equipped with respectively tubular anode and tubular type negative electrode, seal cover with compressed air stream cyclone is fitted in tubular type negative electrode outboard end, the two ends of anode cable respectively with anode discharge district and the DC power cabinet anodic bonding of tubular anode, equipped cathode cable two ends of opening arc cabinet are connected with DC power cabinet negative electrode with tubular type negative electrode respectively, on tubular type negative electrode internal face, set gradually vertically cathodic discharge district annular lower limit and cathodic discharge district annular upper limit, on the tubular type negative electrode internal face between described cathodic discharge district annular lower limit and cathodic discharge district annular upper limit, form cathodic discharge region, the direct current compressed gas air admission hole putting with direct current compressed gas insulated enclosure with one end of the direct current compressed gas carrier pipe of direct current compressed gas control valve is communicated with, direct current gas control valve control cables is connected computer compressed gas surge tank with direct current compressed gas control valve, negative electrode compressed gas carrier pipe one end of equipped eddy flow compressed gas control valve is communicated with the compressed air stream cyclone on end cover, cyclone gas control valve control cables is connected computer compressed gas surge tank with eddy flow compressed gas control valve.
During the invention operation, can make tubular type cathodic discharge district when radial rotary moves, also at axial location, produce mobile, at tubular type negative electrode inwall, form the feature that moves electric discharge track with spiral, tubular type cathodic discharge region is expanded the cylindric of 45mm to by existing 5-10mm circular, has increased the region of discharge of plasma tubular type negative electrode; The more independent radial rotary of region of discharge scaling loss degree that tubular type negative electrode inwall is spiral motion track moves scaling loss mild degree, not only increased tubular type cathodic discharge region area, alleviated again tubular type negative electrode inwall region of discharge high temperature scaling loss, tubular type negative electrode is reached more than 400 hours service life, have simple and reasonable, automaticity is high, use is reliable, fault is few, plasma tubular type negative electrode long service life, feature that operating cost is cheap.The invention also can reach the effect increasing the service life to the anode of pipe type cathode plasma gun, applied widely.
Accompanying drawing explanation
Fig. 1 is a kind of plasma tubular type negative electrode air-flow self-checking device general structure schematic diagram in service life that extends;
Fig. 2 is that A-A in Fig. 1 is to cutaway view;
Fig. 3 is direct current compressed air pressure period of change schematic diagram.
Piece number explanation in figure:
1, tubular anode, 2, tubular type negative electrode, 3, anode cable, 4, cathode cable, 5, direct current compressed gas insulated enclosure cover, 6, direct current compressed gas carrier pipe, 7, direct current compressed gas control valve, 8, end cover with compressed air stream cyclone, 9, cathodic discharge district annular lower limit, 10, cathodic discharge district annular upper limit, 11, anode discharge district, 12, open arc cabinet, 13, eddy flow compressed gas control valve, 14, negative electrode compressed gas carrier pipe, 15, cyclone gas control valve control cables, 16, direct current gas control valve control cables, 17, computer compressed gas surge tank, 18, DC power cabinet, 19, direct current compressed gas air admission hole.
The specific embodiment
Below in conjunction with accompanying drawing, the invention embodiment is described in detail.A kind of plasma tubular type negative electrode air-flow self-checking device in service life that extends, in the opposite end portion of direct current compressed gas insulated enclosure cover 5, be equipped with respectively tubular anode 1 and tubular type negative electrode 2, seal cover 8 with compressed air stream cyclone is fitted in tubular type negative electrode 2 outboard end, the two ends of anode cable 3 respectively with anode discharge district 11 and DC power cabinet 18 anodic bondings of tubular anode 1, equipped cathode cable 4 two ends of opening arc cabinet 12 are connected with DC power cabinet 18 negative electrodes with tubular type negative electrode 2 respectively, on tubular type negative electrode 2 internal faces, set gradually vertically cathodic discharge district annular lower limit 9 and cathodic discharge district annular upper limit 10, on tubular type negative electrode 2 internal faces between described cathodic discharge district annular lower limit 9 and cathodic discharge district annular upper limit 10, form cathodic discharge region, one end with the direct current compressed gas carrier pipe 6 of direct current compressed gas control valve 7 is communicated with the direct current compressed gas air admission hole 19 on direct current compressed gas insulated enclosure cover 5, direct current gas control valve control cables 16 is connected computer compressed gas surge tank 17 with direct current compressed gas control valve 7, negative electrode compressed gas carrier pipe 14 one end of equipped eddy flow compressed gas control valve 13 are communicated with the compressed air stream cyclone on end cover 8, cyclone gas control valve control cables 15 is connected computer compressed gas surge tank 17 with eddy flow compressed gas control valve 13.
Operation adjustment process is as follows: given direct current compressed air stream and eddy flow compressed air stream, give DC power cabinet 18 power supplies, by positive and negative utmost point cable 3,4, at tubular type negative electrode 2 and tubular anode 1, form voltage, open arc cabinet 12 generation instantaneous pressures and puncture tubular type negative electrode 2 and tubular anode 1, form continuous plasma electric arc.The direct current compressed air stream of initial stage steady pressure makes tubular type cathodic discharge region constant in axial direction fixed position, compressed air stream to 14 supplies of negative electrode compression carrier pipe produces and tangentially rotates into tubular type negative electrode 2 inwalls under the effect of the end cover 8 with compressed air stream cyclone, forces cathodic discharge region at negative electrode inwall annular lower limit 9 place's rotating electric-dischargings in low-voltage cathodic discharge district radially under the negative electrode compressed air stream effect of rotation.Computer compressed gas surge tank 17 sends instruction according to predefined direct current compressed air stream change curve, direct current compressed gas control valve 7 is sent to periodic pressure regulating command, direct current compressed air stream is changed according to instruction, when direct current compressed air pressure increases gradually, the effect of straight-flow air forces cathodic discharge region to be moved to annular upper limit 10 places, high voltage cathodic discharge district, forms the region of discharge of spiral motion track at tubular type negative electrode 2 inwalls.Otherwise cathodic discharge region is helical trajectory by annular upper limit 10 places, cathodic discharge district to low-voltage cathodic discharge district annular lower limit 9 and moves electric discharge.According to the direct current compressed air pressure cycle change curve of test data establishment, computer compressed gas surge tank 17 is carried out periodic pressure adjustment according to 7 pairs of direct current compressed air pressure of the curve controlled direct current compressed gas control valve of setting.Result is: tubular type negative electrode inwall region of discharge is not only at radial rotary, also at tubular type negative electrode 2 inwalls, move axially, form the electric discharge of spiral motion track, increased the region of discharge of tubular type negative electrode 2, improve the effective rate of utilization of existing tubular type negative electrode, reduced negative electrode scaling loss degree, increased the service life of tubular type negative electrode, through experimental verification, can make surpass more than 400 hours the service life of tubular type negative electrode.
Claims (1)
1. one kind extends the plasma tubular type negative electrode air-flow self-checking device in service life, in the opposite end portion of direct current compressed gas insulated enclosure cover (5), be equipped with respectively tubular anode (1) and tubular type negative electrode (2), end cover (8) with compressed air stream cyclone is fitted in tubular type negative electrode (2) outboard end, the two ends of anode cable (3) respectively with anode discharge district (11) and DC power cabinet (18) anodic bonding of tubular anode (1), equipped cathode cable (4) two ends of opening arc cabinet (12) are connected with DC power cabinet (18) negative electrode with tubular type negative electrode (2) respectively, it is characterized in that: on tubular type negative electrode (2) internal face, set gradually vertically cathodic discharge district annular lower limit (9) and cathodic discharge district annular upper limit (10), on described cathodic discharge district annular lower limit (9) and tubular type negative electrode (2) internal face between cathodic discharge district annular upper limit (10), form cathodic discharge region, one end with the direct current compressed gas carrier pipe (6) of direct current compressed gas control valve (7) is communicated with the direct current compressed gas air admission hole (19) on direct current compressed gas insulated enclosure cover (5), direct current gas control valve control cables (16) is connected computer compressed gas surge tank (17) with direct current compressed gas control valve (7), negative electrode compressed gas carrier pipe (14) one end of equipped eddy flow compressed gas control valve (13) is communicated with the compressed air stream cyclone on end cover (8), eddy flow compressed gas control valve control cables (15) is connected computer compressed gas surge tank (17) with eddy flow compressed gas control valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210111037.2A CN102607057B (en) | 2012-04-17 | 2012-04-17 | Automatic air flow adjusting device for prolonging service life of plasma tube type cathode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210111037.2A CN102607057B (en) | 2012-04-17 | 2012-04-17 | Automatic air flow adjusting device for prolonging service life of plasma tube type cathode |
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| CN102607057A CN102607057A (en) | 2012-07-25 |
| CN102607057B true CN102607057B (en) | 2014-04-16 |
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| CN201210111037.2A Expired - Fee Related CN102607057B (en) | 2012-04-17 | 2012-04-17 | Automatic air flow adjusting device for prolonging service life of plasma tube type cathode |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103813561A (en) * | 2013-04-16 | 2014-05-21 | 杜志刚 | Plasma radon gas high pressure gas heating device method |
| CN103813559A (en) * | 2013-04-16 | 2014-05-21 | 杜志刚 | Plasma radon gas high-pressure gas heating device |
| CN105116765B (en) * | 2015-06-30 | 2017-11-14 | 国网山东省电力公司电力科学研究院 | Plasma with various control function opens arc control system and method automatically |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009001945A1 (en) * | 2008-03-28 | 2009-10-01 | DENSO CORPORATION, Kariya-shi | detonator |
| CN101551118A (en) * | 2009-04-23 | 2009-10-07 | 徐州燃控科技股份有限公司 | Plasma ignition device with long service life |
| CN102364994A (en) * | 2011-09-28 | 2012-02-29 | 南京创能电力科技开发有限公司 | Cathodic arc controller for low-temperature plasma generator |
| CN202511326U (en) * | 2012-04-17 | 2012-10-31 | 黄晓曲 | Automatic airflow adjusting device capable of extending service life of plasma tube cathode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES1056897Y (en) * | 2004-03-03 | 2004-09-01 | Fagor S Coop | GAS DISTRIBUTOR GROUP WITH ROTATING TAPES FOR A COOKING DEVICE. |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009001945A1 (en) * | 2008-03-28 | 2009-10-01 | DENSO CORPORATION, Kariya-shi | detonator |
| CN101551118A (en) * | 2009-04-23 | 2009-10-07 | 徐州燃控科技股份有限公司 | Plasma ignition device with long service life |
| CN102364994A (en) * | 2011-09-28 | 2012-02-29 | 南京创能电力科技开发有限公司 | Cathodic arc controller for low-temperature plasma generator |
| CN202511326U (en) * | 2012-04-17 | 2012-10-31 | 黄晓曲 | Automatic airflow adjusting device capable of extending service life of plasma tube cathode |
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| CN102607057A (en) | 2012-07-25 |
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