The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model embodiment is described in further detail:
As shown in Figure 1, showed coal oven dithio-gas ignition bleeding control device structure, comprise PLC switch board 12, igniter, put fire-box 5, burning torch protective device, ignition bleeding burner 1 and UPS electric power system on the spot, described PLC switch board is arranged on the bottom of ignition bleeding control device, and is connected with the ignition bleeding control device; Described igniter is arranged on describedly to be put in the fire-box on the spot; Described ignition bleeding burner is fixed on the coke oven emission pipe by flange.
Above-mentioned ignition bleeding burner is the wind-proof type burner, and this wind-proof type burner comprises cylindrical shell, flange, hurricane globe, exhaust stack, holds together fiery assembly, the fire extinguishing assembly, stablize steady flame device and the flame detecting device of burning things which may cause a fire disaster.
Cylindrical shell is the main body of ignition bleeding system burner, adopts stainless steel to make, and plays a part to support, diffuse, dispel the heat.Above-mentioned steady flame device is arranged on the exit of exhaust stack, adopts stainless steel to make; By changing the airflow direction gas flow rate, form the point of safes burning things which may cause a fire disaster, play steady fire, anticreep fire action.The steam smoothering pipe, hold together the firearm pipe: steam enters the igniting diffusion system from main steam range and is divided into two, one the tunnel enters the endless tube in cylindrical shell exit, tell some little steam jets by endless tube, can consist of the steam protection layer on the one hand, the torch cylindrical shell is carried out thermal insulation protection and holds together coal gas not large tracts of land diffusion in certain altitude; Along with the ejection of steam, injection part air makes the air of injection fully mix with the coal gas of cylindrical shell ejection, reaches smokeless combustion on the other hand.Another road is four arm ejection steam after entering the cylindrical shell bottom, makes simplified top form the steam interlayer, reaches the anti-backfire effect, consists of the steam smoothering pipe.
Hurricane globe: ignition system is the suction part air when diffusing, and the effect of thermal incineration so that mist has stayed for some time in the combustion chamber that hurricane globe forms can also the retention flame, makes it not be subjected to the impact of external environment condition.Described burning torch includes two at least, and two burning torches are installed on the hurricane globe by the mounting pipe symmetry respectively.
Fixing, support that above-mentioned flange mainly plays a part, flange comprises large flange 8 and little flange 7, and described ignition bleeding burner is to be fixed on the coke oven emission pipe by large flange, and described little flange will hold together fire tube and be connected with the coke oven steam supply pipe with fire extinguishing tube.Wherein, the ignition bleeding burner is fixed on the upper end of exhaust stack.
Above-mentioned igniter comprises igniter, high-tension shielding cable 4 and burning torch 2; Described igniter is connected with burning torch by the high-tension shielding cable, is the capital equipment of igniting, and diameter is 18mm, and length 1000mm gets angry and holds 1000 ℃ of heatproofs.Wherein, the burning torch symmetry is installed on the hurricane globe, can fully avoid wind direction on the impact of igniting contact point.The high temperature dot nozzles that igniter adopts advanced firing technique to produce, heatproof 1000 degree can be for a long time in flame zone work, and direct igniting crude gases.Adopt the high temperature resistant igniting components and parts of engine, ignition energy is large, and stain resistance is strong.
Above-mentioned flame detecting device comprises flame test rod and flame detector, and described flame test rod is fixed on the described hurricane globe, connects and carries signal to the PLC switch board by wire; The variations in temperature of periphery was judged fired state when the flame test rod came the flame detection burning by thermocouple assembly, and is namely intuitively accurate again.The flame test rod gathers the millivolt magnitude voltage signals, directly voltage signal is delivered to the PLC switch board by compensating wire.
Above-mentionedly hold together fiery assembly and comprise holding together fiery valve 10 and hold together fire tube; Described fire extinguishing assembly comprises fire valve 9 and fire extinguishing tube.
Put on the spot fire-box and adopt double-deck temperature-resistance thermal-insulation design, be used for preventing burning torch.The point fire-box is fixed on the flare tower top operating platform, and this platform is correct position under flare tip and torch cylindrical shell adpting flange.As far as possible away from high temperature or the zone (namely as far as possible away from the diffusing tower top burner, as far as possible away from coke oven coke oven uprising tube flame point) that has naked light to occur.
Above-mentioned igniter is HYDH-20B type high energy ignition unit.The high energy ignition unit technical parameter is: operating voltage: AC220V soil 10%, 50HZ, operating current :≤5A, output voltage: DC2500V, produce power: 20J, spark frequency: 12-14 time/second, operating temperature :-20--85 ℃, applicable fuel: natural gas, coal gas, diesel oil, heavy oil, residual oil, appearance and size: 250 * 250 * 170(mm), weight: 18KG.
Above-mentioned automatic ignition switch board size is 800*600*1800(W*D*H), for " holder two formulas " structure (switch board band two cover ignition bleeding devices), also can be designed to according to user's request " a holder same form ", " holder four formulas ".Switch board top has three number of units words to show control transmission device, the respectively temperature of detected set tracheal pressure and two flame detecting devices.Guidance panel below the instrument, the semi-automatic and manual control of feasible system.The automatic ignition switch board to the electric operator 11 of diffusion valve 6, hold together fiery valve 10, fire valve 9, flame and detect feeler lever, high energy ignition unit carries out programme-control, effectively reaches the purpose of automatic relief igniting.
Automatic ignition switch board major function
(1) control model is selected: by a selector switch, switch board can be realized automatic, semi-automatic, manual control setting.
(2) parameter detecting: show the control transmission device by three intelligent digitals, detect the temperature of collecting main pressure and two flame detecting devices, and be presented on the switch board, make operating personnel get information about system mode.
(3) setting parameter: but the numerical value of the upper limit, low pressure limit on the rational upper pressure limit of automatic ignition switch board free setting, pressure has satisfied the needs (establishing method sees " digital display indicator handbook " for details) of different user individual difference.
(4) beep is reported to the police: be provided with a beep alarm in the automatic ignition switch board, when collecting main pressure surpasses upper limit set value or upper upper limit set value, send beep and report to the police.
(5) noise reduction: at control panel a mute button is arranged, be used for after warning obtains confirming, eliminating the beep chimes of doom.
(6) automatic: selector switch is when automated location, and the PLC control system realizes the automatic control of ignition bleeding according to the pressure detecting data.
(7) semi-automatic: selector switch can manually start or stops the ignition bleeding process at control panel when semi-automatic position.
(8) manual: selector switch when manual position, can be on control panel independent each equipment in the start and stop ignition bleeding system progressively.
(9) indicator lamp: the automatic ignition switch board can be presented on the guidance panel by indicator lamp the running status of each equipment on the spot.
(10) fire inspection: whether the ignition bleeding burner under the automatic ignition switch board can be controlled each its by indicator lamp catches fire and shows.
Automatic ignition switch board program:
(1) the condition down-firing diffuses program automatically: the upper limit continues to connect 1S on the pressure when detecting, and the autoignition bleeding program start is opened diffusion valve immediately; high energy ignition unit start working (being generally 15S) simultaneously; burning torch begins igniting, starts after 1 minute and holds together fiery valve, enters the state of diffusing.
(2) the flame-out program of diffusing that stops under the automatic condition: when the detected pressures lower limit continues to connect 1S, open at first rapidly fire valve, close simultaneously closed fiery valve and diffusion valve, close fire valve behind the 90S, the process of diffusing finishes.
(3) program is diffused in starting ignition under the semi-automatic condition: obstructed excess pressure detects the people and diffuses process for starting ignition, and the process of diffusing is with (1).
(4) the flame-out program of diffusing that stops under the semi-automatic condition: obstructed excess pressure detects the artificial flame-out process of diffusing that stops that starting, and the flame-out process of diffusing that stops is with (2).
Report to the police about the automatic ignition switch board:
(1) upper pressure limit is reported to the police: buzzer interval 2S,
(2) upper limit alarm on the pressure: buzzer interval 1S, diffuse in the process and report to the police.
Curve is diffused in the anti-fluctuation of automatic ignition switch board:
As shown in Figure 2, P1 is the low pressure limit value of default, and when pressure was lower than P1, system stopped the process of diffusing; P2 is the upper pressure limit value of default, and when pressure high pressure P 2, system will send the beep warning that frequency is 2s, and process is diffused in not starting ignition; P3 is higher limit on the pressure of default, and when pressure was higher than P3, process was diffused with automatic starting ignition by system, and to send frequency be that the beep of 1s is reported to the police; After pressure was lower than upper upper limit alarm value P3 and is higher than again upper limit alarm value P2, the beep alert frequency changed 2S into; After pressure was lower than upper pressure limit value P2, beep was reported to the police and is cancelled, until pressure is lower than low pressure limit, termination routine is diffused in starting ignition.
In order to prevent pressure oscillation to the disturbance of systematic parameter, default the anti-tampering judgement time of 1s.Such as t3-t2<1s, pressure oscillation concussion interference is thought through judging by system, buzzer is reported to the police, but can not start the autoignition bleeding program, t6-t5〉1s, system automatically starts the autoignition bleeding program, and stop the autoignition bleeding program when t7+1s through judging when t5+1s.
The installation process of the right burner of ignition bleeding is as follows:
At first with large flange is to connecting on the large flange of burner bottom and pad and the coke oven emission tower, tighting a bolt fixes burner, wherein the side with flame test rod sleeve pipe will be installed in the outside of coke oven.
When then install fire tube road and fire extinction pipeline, the jet chimney Site Welding that coke oven is provided is on corresponding anti-flange.
Secondly with in two burning torch insertion point firelock sleeve pipes, stretched into foremost cylindrical shell outer 4~7cm, the rear end is connected fastening set bolt behind the location by the high-tension shielding cable with the on-the-spot igniter of putting in the fire-box.
Again the flame test rod is inserted flame and detect in the feeler lever sleeve pipe, stretched into foremost cylindrical shell outer 4~6cm, fastening set bolt behind the location.
Flame detects the feeler lever compensating cable to putting fire-box on the spot, by high-tension shielding cable hyphen burning torch and igniter.High-tension shielding cable and compensating cable will be protected with fire proofing material.
Put on the spot the installation of fire-box
Can be connected to the scope selected element fire-box installation site of high-energy igniter at igniting high-tension shielding cable, and require to put on the spot fire-box and be installed in the coke oven outside and away from diffusing start-up burner, be convenient to the position of Maintenance and Repair; Then connect the high-tension shielding cable between burning torch and the high-energy igniter.
The installation of automatic ignition switch board: the automatic ignition switch board is fixed on the base support, cable laying as requested, and according to PLC cabinet connecting terminals map interlinking correct wiring (comprising the field apparatus terminal connections), the correctness of post debugging wiring is installed and guarantees system earth.
The IGNITION CONTROL cabinet has three kinds of control models:
Manual mode: the selector switch on the panel is got to manual mode, and switch board namely works in manual mode.In all separately step-by-step operations of manual mode all devices.Ignition order is: open A, B igniter → open diffusion valve → determine to open fiery valve after flame is set up.Fire extinguishing sequentially is: open fire valve → pass diffusion valve → pass and close fire valve after holding together fiery valve → affirmation fray-out of flame.
Semi-automatic mode: the selector switch on the face version is got to semi-automatic mode, and switch board namely works in semi-automatic mode.In semi-automatic mode, when force value reaches upper upper limit alarm, press start button, program automatically perform diffuse ignition procedure, when pressure drop after lower limit, press stop button, program automatically performs the fire extinguishing program.
Full-automatic mode: the selector switch on the face version is got to automated manner, and switch board namely works in automated manner.Pressure detecting is after the upper limit continues 1S, and program automatically performs diffuses ignition procedure, and pressure drop immediately execution behind the lower limit 1S stops the program of diffusing.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and is all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.