CN2544198Y - High-voltage air ionizing automatic ignitor for combustible gas - Google Patents

Abstract

The utility model relates to a combustible gas automatic ignition device through high voltage and ionization air, pertaining to the smelting mechanical equipment field, and mainly comprises an ignition generator part and an ignition electrode part. The utility model is characterized in that the ignition generator is a pulse high-voltage type, which is connected with a high-pressure ignition module through a pulse generator and an ignition distance control device, and then is connected with a high-pressure electrode group on an upper ignition drum through a high-energy ignition wire of energy storing type connected with the ignition generator. The utility model can be applied to different fuel gases with different concentration requirements, and has the advantages of simple system operation, reliability, great improvement in control precision, reducing labor intensity, sparing hidden accident and low price.

Description

Fuel gas high pressure ionization air automatic ignition device

(1) technical field

The utility model belongs to the smelting mechanical equipment field, relates to a kind of fuel gas high pressure ionization air automatic ignition device especially.

(2) technical background

Coking furnace (coke oven), gas producer, natural gas generator, liquefied petroleum device all are widely used in industries such as metallurgy, machinery, light industry, communications and transportation, it is extremely common infrastructure device, wherein, the coking furnace that solid coal is formed coke through burn incompletely one of requisite infrastructure device of metallurgical industry especially.

With the coking furnace is example, present coking furnace, and particularly middle-size and small-size coking furnace (referring to that 12M is following), its tail gas pollution fails to solve well always.Discharging of the coke and stoking is gone in the stove process, producing and comprise carbon monoxide (accounting for 20%), methane (accounting for 15%) and carbon dioxide in a large number, they all are emitted in the atmosphere, contaminated environment not only, and can't reclaim and utilize.Recently adopted and lighted the pollution abatement of tail gas method, the ignition method of use roughly has: direct labor igniting, in addition establish normal battle of fire tube, produce spark ignition tail gas with electric welding arcing method, above method all has shortcoming.

Because discharging tail gas begins and when terminate, concentration does not reach ignition point, can't light, and discharging concentration in mid-term because of accumulation above firing a little, mid-term, igniting was very easily blasted, and caused device damage, casualties, so the danger of direct labor's ignition method is bigger; Other establishes normal battle fire tube and is also stopped up by coal tar easily and lost efficacy; With electric welding arcing method, again often because of coal tar adheres to can't arcing, and invest huge (tens thousand of) to hundreds thousand of units, can't use.For this reason, just wishing can have a kind of row easy and simple to handle, easy, investment seldom, and the device that can in good time light a fire, makes unlikely the overflowing of coal gas tail gas pollute, aim of the present utility model that Here it is.

(3) summary of the invention

The utility model technical issues that need to address are, for overcoming in the known technology of lighting the coke oven last person of institute tail gas, existing ignition condition harshness, easily blast, many defectives such as equipment investment is big, thereby propose a kind of row easy and simple to handle, easy of redesign, small investment, and the device that can in good time light a fire.

The purpose of this utility model relies on following technical proposals to realize: a kind of fuel gas high pressure ionization air automatic ignition device, mainly comprise the ignition generator part, the ignitor part, it is characterized in that, this ignition generator is the high-tension ignition generator of pulse, it is connected to high-voltage ignition module by impulse generator and igniting pitch controller, again by coupled energy storage type high-energy ignition line, be connected on the high-field electrode group that is in the ignition pot, should go up the ignition pot sidewall explosionproof hole had been installed, be provided with the down-firing tube with last ignition pot, this down-firing tube sidewall is connected with the gas concentration detector with being separated with the slit.The high-tension ignition generator of described pulse, utilize rectangular pulse signal circuit generation amplitude to be+5V, pulsewidth is 100ms, spacing is 50～100ms pulse voltage, form continuous firing 3～5 seconds through the igniting interval control circuit, the interrupting pulse group at 2～3 seconds intermittences, after power amplification, promote 2～3 covers or more high-voltage ignition module, produce 10,000～1.5 ten thousand volt DC high pressure, again through energy storage type high-energy ignition line, be promoted to 30,000～40,000 volt DC high pressure, be delivered to resistant to elevated temperatures high-tension ignition electrode, regulate high-tension ignition distance between electrodes (in 2mm～20mm scope), make it produce the air ionization discharge, thus ignited flammable gas.

Described energy storage type high-energy ignition line; the helix heart yearn is made for the alloy filament winding in its center, peripheral filled silicon rubber and medium sheath thereof, its outer layer of metal litzendraht wire layer that wraps again; outermost is provided with the protective layer of one deck silicon rubber braided sleeving, and the end place is provided with resistance and sleeve.During work, after metal knitted line layer ground connection, produce distribution capacity with heart yearn, the appearance value is between 39ppf to 100ppf, owing to designed capacitor layers on this ignition lead, through discharging and recharging effect, 10,000 volts～1.5 ten thousand volts high pressure are risen to about 40,000 volts, and be kept to 4/ hundred ten thousand second by 1/300 second discharge time, and power improves more than 300 times, thereby ionized gas very easily, improved ignition effectiveness.Because operating voltage is too high, has adopted the multilayer safeguard measure, disturb for avoiding the high-pressure ignition wire Electromagnetic Launching, set up resistance at its end points, resistance is between 500 Ω～5k Ω.During igniting, vary in size, can use copper high-pressure ignition wire, high voltage damper, carbon line and energy storage type high-energy ignition line described herein according to gas with various burning required voltage.

Described high-field electrode group comprises fixed electrode and a moving electrode that passes insulator of a ground connection, but relies on the spiral shell button point of adjustment fire discharging gap on the electrode, and this moving electrode closely is connected with the high-energy ignition line by connecting the termination.The igniting discharging gap is generally about 10mm.Electrode number can be selected between 1～6 group, and electrode material can adopt steel alloy, siderochrome aluminium, tungsten carbon steel and molybdenum steel, and this is desired according to the composition of different fuel gas, so that anti-burning temperature is selected between 850 ℃～2350 ℃.The electrode thickness can be selected between diameter 6mm～10mm.The high-tension ignition electrode will be put at top cylinder, it is the combustion zone, explosionproof hole places ignition pot, in order to strengthen combustion efficiency, the top cylinder diameter is greater than doffing, and the gas concentration detector is placed in doffing, and promptly the tail gas input does not fire around the district, leave the gap between the upper and lower tube, so that combustion air enters rapidly according to draught head.

This device is adapted to the various ignition mode, is listed below:

1. manual ignition, according to on-the-spot needs, master cock igniting at any time.

2. time relay program igniting, non-seed region can be set---seed region---automatic stop, can control the duration of ignition is 10 seconds～10 minutes, or longer, but automatic stop then.

3. automatic igniting is provided with the gas concentration detector, according to the concentration signal starting ignition switch of detector feedback, lights a fire automatically, and controls automatic stop with the time relay.

4. program control igniting, but the automatic multimachine igniting of Remote multimachine while or control different time.

For preventing detonation, except that the strict control igniting starting time, also being provided with explosionproof hole, use the metal sheet sealing at ordinary times with this patent circuit, in case detonation, pressure increases, the bursting diaphragm explosion of going ahead of the rest is not damaged with maintenance equipment.

The beneficial effects of the utility model, it is the variant igniting requirement that can extensively be adapted to different combustion gas kinds and variable concentrations gas, system operation methods is easy, reliable, control accuracy greatly improves, and reduces labor intensity, and eliminates accident potential, and its is cheap, only be about 1/20th of arc process, have good cost performance, when tail gas is lighted a fire, eliminated the environmental pollution that CO, discharge of methane cause.

(4) description of drawings

Fig. 1 installs overall schematic block diagram for this.

Fig. 2 is this device electronic control circuit schematic diagram.

Fig. 3 is an energy storage type high-energy ignition toe-in composition.

Fig. 4 is one of an ignitor electrode structure schematic diagram.

Fig. 5 is two schematic diagrames of ignitor electrode structure.

(5) specific embodiment

With reference to Fig. 1, Fig. 2, represent the block diagram that this device is overall, device is totally by four most of compositions, wherein 1 for the high-tension ignition generator part of pulse, it comprises squarer, the igniting pitch controller, power amplifier and two (or more than two) high-voltage ignition modules, this part has also comprised DC converting and voltage-stabilized power supply part and four kinds of sparking mode circuit, they are manual ignition switches, the time relay, auto lighting switch, circuit parts such as grammed switch input, be connected to energy storage type high-energy ignition line 2 by the ignition module output, this part is with reference to Fig. 3, comprise helix heart yearn 2.1, it is formed by alloy filament winding system, peripheral silicon rubber and medium sheath 2.2 thereof of filling, outer again bread is knitted layer of metal braid 2.3, and outermost is a silicon rubber braided sleeving protective layer 2.4, and the end is a wire-wound resistor 2.5, metal sleeve 2.6, it is outer to be rubber sleeve 2.7, pyrocondensation sheath 2.8 and ground strip 2.9; Among Fig. 1,3 is the high-field electrode group, and it is installed among the ignition pot 4, and the down-firing tube 5 that is separated with the gap with it is installed with gas concentration detector 6 for the tail gas input on it, in the scope outside of seed region explosionproof hole 7 is installed also; With reference to Fig. 4, Fig. 5, the structure of two kinds of ignitor electrode groups of its expression, wherein 3.1 for having the moving electrode of spiral shell button, fixed electrode 3.2 by ground connection dish 3.5 with communicate, connect termination 3.3 and be close to ignition lead, they pass insulator 3.4, can regulate discharge at interval by the spiral shell button.

Claims (4)

1. fuel gas high pressure ionization air automatic ignition device, mainly comprise ignition generator part, ignitor part, it is characterized in that, this ignition generator is the high-tension ignition generator of pulse, it is connected to high-voltage ignition module by impulse generator and igniting pitch controller, again by coupled energy storage type high-energy ignition line, be connected on the high-field electrode group that is in the ignition pot, should go up the ignition pot sidewall explosionproof hole had been installed, be provided with the down-firing tube with last ignition pot, this down-firing tube sidewall is connected with the gas concentration detector with being separated with the slit.

2. automatic ignition device according to claim 1; it is characterized in that; described energy storage type high-energy ignition line; the helix heart yearn is made for the alloy filament winding in its center; peripheral filled silicon rubber and medium sheath thereof; wrap layer of metal litzendraht wire layer again outside it, outermost is provided with the protective layer of one deck silicon rubber braided sleeving, and the end place is provided with resistance and sleeve.

3. automatic ignition device according to claim 1, it is characterized in that, described high-field electrode group, fixed electrode and a moving electrode that passes insulator of comprising a ground connection, but rely on the spiral shell button point of adjustment fire discharging gap on the electrode, this moving electrode closely is connected with the high-energy ignition line by connecting the termination.

4. automatic ignition device according to claim 1 is characterized in that, electrode number can be selected between 1～6 group, and electrode material can adopt steel alloy, siderochrome aluminium, tungsten carbon steel and molybdenum steel.

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