CN2515558Y

CN2515558Y - Automatic synthetic ignitor for torch

Info

Publication number: CN2515558Y
Application number: CN 01274462
Authority: CN
Inventors: 王金祥; 周光辉; 杜刚
Original assignee: Shanghai Jianxin New Technology Engineering Co Ltd; SHANGHAI TONGJI HIGH-TECH DEVELOPMENT Co Ltd
Current assignee: Shanghai Jianxin New Technology Engineering Co Ltd; SHANGHAI TONGJI HIGH-TECH DEVELOPMENT Co Ltd
Priority date: 2001-12-26
Filing date: 2001-12-26
Publication date: 2002-10-09
Anticipated expiration: 2011-12-26

Abstract

The utility model relates to an automatic synthetic ignitor for torches, which relates to the torch (fixed light) control technique for the vent gas processing of oilfields and chemical industry enterprises and is used for the torch automatic ignition system of the oilfield, chemical industry as well as the enterprises with emptying gas processing. The device of the utility model adopts an automatic controlling mixer formed from a balance pipe (3), a pressure regulating valve (4), and a balance pipe (5) to be connected to a compressed air pipe (2) and a fuels air pipe 6. An electric mould plate (9) and a control mould plate (10) control the start and stop of an electromagnetic valve (8) and an electromagnetic valve (16) and the ignition of an igniter (11). The fixed light is ignited by the gas mixture in the mode of internal transmission flame, and thus the ground control of ignition and flameout is realized. The device processes the vent gas timely when the processing is needed, the torch can be automatically extinguished when the vent gas processing is not needed; a great amount of energy resources can be saved. The utility model has simple installation and convenient and safe maintenance and operation.

Description

The synthetic automatically igniter of torch

Torch synthesizes igniter automatically, relates to torch (normal bright lamp) control technology of oil, chemical enterprise emission gas treatment, the enterprise's torch Auto-ignition System that is used for oil, chemical industry and has pair emptying gas to handle.

Existing oil, chemical enterprise lay particular emphasis on secure context and consider that the normal bright lamp of flare discharge system burns always the processing of emptying gas, and it is consume fuel gas 30NM per hour ³/ only normal bright lamp, common one is with the torch of four normal bright lamps, about 1,000,000 yuans of the expense that burns every year.For this reason, it is believed that to be necessary normal bright lamp when not discharging gas, and discharging is arranged gas the time, light torch automatically, and this has been carried out continuous research.The source mainly takes place by the igniting flop signal: igniting program control instrument PLC (or DCS) in existing torch Auto-ignition System; High-level ignition module (high-altitude ignition device, high pressure conducting rod, ignition tip etc.) is set; Burner magnetic valve group; Normal bright lamp assembly and measuring instrument six most of compositions.When no emptying gas discharges, the no ignition signal of PCL (or DCS); When dropping a hint discharging, be arranged on the flow on the process pipe in differential pressure transmitter (or pressure switch) on the process pipe of dropping a hint of water sealed tank upstream and water sealed tank downstream and trigger ignition signal, reach PLC (or DCS), after PLC (or DCS) receives ignition signal, promptly carry out ignition procedure, light normal bright lamp, and then light torch, exhaust is handled.The temperature monitoring instrument (thermocouple) that is arranged on normal bright lamp and the torch detects normal bright lamp and torch temperature, passes to PLC (or DCS), the foundation of whether lighting as normal bright lamp and torch.Whether after confirming that flare discharge gas is lighted, PLC (or DCS) sends the instruction of the normal bright lamp fuel gas of automatic cut-out magnetic valve, and ignition procedure is finished, and PLC (or DCS) then enters discharging and patrols and examines state, detect the discharging of dropping a hint and finish.After emptying discharging finished, PLC (or DCS) entered the torch state of patrolling and examining of awaiting orders once more.If igniting is broken down then sent alarm signal, just need enter artificial positive ignition state.Therefore; usually can run into following problem in the practical application early: at high temperature, corrosive environment is Ah; being easy to cause to the inductance distortion causes short circuit and ignition tip because of problems such as the serious knot carbon that burns; can cause the automatic ignition system cisco unity malfunction; and high-altitude ignition device assembly is located at the high-altitude, to he detection and safeguard all very inconvenient.

Summary of the invention

For addressing the above problem, the inventor has carried out continuous research, a kind of employing internal flame transferring sparking mode of separating with igniting program control instrument PLC (DCS) has been proposed, both will control high-altitude ignition and change that the control ground point is fought and cover igniter several the normal bright lamps that can ignite simultaneously into, the synthetic automatically igniter of maintenance, easy to use, energy-conservation torch.

This practicality is made up of automatic control blender, magnetic valve, igniter, electric template, control template, connecting pipe and explosionproof electric box with novel.This synthetic igniter is installed on the ground of torch battery limit (BL) separates with igniting program control instrument PLC (or DCS), and it can realize that controlling torch lights a fire automatically, again can be chain with PLC (or DCS) realization.Automatically the control blender is made of pressure-regulating valve and two balance pipes, and a balance pipe is communicated with compressed air hose, and another root balance pipe is communicated with fuel gas pipe, and pressure-regulating valve is fixedlyed connected with fuel gas pipe, according to the air pressure P that enters blender _a, temperature T _a, the component of gaseous mixture structural parameters, fuel gas, temperature T _g, the fuel gas pressure P _g, set constant compression force difference DELTA P, i.e. a Δ P=P by pressure-regulating valve _g-P _a, the air-fuel ratio of gaseous mixture is the function of pressure differential deltap P.When fuel gas pressure and compressed-air actuated pressure difference value during greater than constant compression force difference DELTA P, pressure-regulating valve is opened valve automatically enters in the gaseous mixture pipeline combustion gas, the air-fuel ratio of the gaseous mixture in the gaseous mixture pipeline is changed, with the control of the electric template of PLC (or DCS) interlocking of signals and control template under opens solenoid valve, initial igniter light by the high pressure cable enter Venturi tube gaseous mixture by the pipeline internal flame transferring and then light one or several normal bright lamps.When the difference of fuel gas pressure and air pressure was equal to or less than constant compression force difference DELTA P, the normal bright lamp of having lighted that fades away of the fuel gas in the gaseous mixture extinguished gradually.

Characteristics of the present utility model are: adopt control blender automatically, magnetic valve, igniter, electric template, the control template, connecting pipe is separated with igniting program control instrument PLC (or DCS) with the device that explosionproof electric box is formed, by pressure-regulating valve and the synthetic automatically gaseous mixture of balance pipe, electric template, control template control initial igniter, light the interior gaseous mixture of pipeline and light normal bright lamp by the internal flame transferring mode, and then light torch, realized that ground control point is flame-out while still alive, make and in time to be handled when needing to handle emission gases, torch extinguished when the thing emission gases was handled, save a large amount of energy, the utility model is installed simple, safeguards, safe and convenient to use.

Description of drawings

Accompanying drawing is the utility model embodiment, wherein:

Fig. 1. be that the utility model uses schematic diagram,

Fig. 2. be the utility model structural representation.

The specific embodiment

The utility model will be further described according to above-mentioned accompanying drawing.The utility model device 1 is connected with igniting program control instrument PLC (or DCS) by cable, carries out interlocking of signals with igniting program control instrument PLC (or DCS) in case of necessity and shows, reports to the police.Be connected with air duct, the fuel gas pipeline of torch ignition system by pipeline.The automatic control blender that the utility model device is made of compressed air hose 2, balance pipe 3, pressure-regulating valve 4, balance pipe 5, fuel gas pipe 6, mixer tube 7, magnetic valve 8, electric template 9, control template 10, igniter 11, high-tension cable 12, sparking plug 13, Venturi tube 14, fuel gas pipe 15, magnetic valve 16 are formed.Pressure-regulating valve 4 is fixedlyed connected with fuel gas pipe 6, and is communicated with compressed air hose 2, fuel gas pipe 6 respectively by balance pipe 3 and balance pipe 5.When the pressure of fuel gas during in normal condition, fuel gas is discharged by fuel gas pipe 15 and magnetic valve 16.When pressure differential that the pressure of fuel gas is set greater than pressure-regulating valve 4, pressure-regulating valve 4 is opened cartridge 6 formulas pressure and is said that air and fuel gas enter mixing in the mixing gas tank 7, magnetic valve 8 is opened under the control automatically in electric template 9 and control template 10, make gaseous mixture enter Venturi tube 14, while initial igniter 11, light the mist that enters Venturi tube 14 by high-tension cable 12 nuclear power mouths 13, the pipeline of mist of being lighted by being connected with Venturi tube 14, light normal bright lamp in the internal flame transferring mode, and then light torch.When the pressure of fuel gas said that with pressure the pressure difference value of air is equal to or less than the pressure difference value of setting, pressure-regulating valve 4 cut out fuel gas pipe 6, and the fuel gas in the gaseous mixture fades away, and the normal bright lamp of having lighted also ceases gradually and goes out.

Claims

1. torch synthesizes igniter automatically, by automatic control blender, compressed air hose (2), fuel gas pipe (6), mixer tube (7), magnetic valve (8), electric template (9), control template (10), igniter (11), high-tension cable (12), sparking plug (13), Venturi tube (14), fuel gas pipe (15), magnetic valve (16) is formed, it is characterized in that: control blender automatically by balance pipe (3), pressure-regulating valve (4), balance pipe (5) constitutes, pressure-regulating valve (4) is fixedlyed connected with fuel gas pipe (6), by balance pipe (3) and balance pipe (5) respectively with compressed air hose (2), fuel gas pipe 6 is communicated with, electric template (9) and control template (10) and igniter (11), magnetic valve (8), high-tension cable 12, magnetic valve (16) circuit connects, and igniter (11) is connected with high-tension cable (12); Compressed air hose (2) is communicated with formation and mixes steam pipe (7) with fuel gas pipe (6), mix steam pipe (7) and be communicated with Venturi tube (14) by magnetic valve (8).

2. device according to claim 1 is characterized in that: the synthetic automatically igniter (1) of torch is connected with igniting program control instrument PLC (or DCS) by cable, is communicated with air duct, the fuel gas pipeline of torch ignition system by pipeline.