High energy electronic ignition system for high pressure gas well
Technical field
The present invention relates in a kind of petrochemical field that is applicable to, the especially natural gas well (oil well) the open flow field ignition system that the open flow mouth is carried out direct-fire.
Background technology
The natural gas well (oil well) is in recovery process or when blowout takes place; usually can give off materials such as a large amount of fuel gas and bittern at the open flow pipeline; these material flows are fast; therefore and contain inflammable, explosive, toxic gases such as methane, hydrogen sulfide and sulfur dioxide, igniting is one of effective measures that reduce casualties as early as possible.At present domestic also do not have a kind of effective ways to solve this difficult problem, and the generation of Dazhou City's 11.20 gas blowout accidents is not emitted a large amount of high pressure fuel gas because of not lighting in the very first time exactly, and made the open flow process out of control.
Drilling well open flow sparking mode mainly contains the ever-burning flame igniting at present, fireworks are lighted a fire and electronics is lighted a fire three kinds indirectly.Naked light igniting is that diesel oil is ignited with firewood or cloth, is placed on the open flow mouth, when combustable gas concentration reaches burning-point and the method for the fuel gas that ignites.Electronics indirectly igniting is that high voltage package generation spark ignition with television set is preset at the coal gas of open flow mouth and the method for the fuel gas that ignites.These two kinds of methods have certain effect to narrow-minded, the process of spurting when controlled, but the water that is ejected often spray goes out, the non-constant of reliability, and potential safety hazard is big, in case consequence out of control can not be imagined.
The fireworks igniting is to aim at open flow with civilian flame flower to spray and the method for the fuel gas that ignites.This method is not easy aiming, and wind-engaging is very big to influence, the non-constant of reliability.Blast is dangerous to operating personnel easily for flame flower self.Above method, normal in use the mixing uses, and operation is extremely inconvenient.This shows that the situ of drilling well utmost point needs the ignition system of novel concept, so that the open flow igniting is safe and reliable.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes the high energy electronic ignition system for high pressure gas well that a kind of fuel gas that adopts the electronic striking mode that the open flow pipeline is sprayed ignites, adopt the present invention, the water that igniting is ejected easily in the present various sparking mode be can solve and the problem of going out, reliability height, no potential safety hazard sprayed, ignition performance accurately, efficiently, even under rugged environment,, also can successfully light a fire as long as gas concentration reaches the burning concentration lower limit.
The present invention is achieved through the following technical solutions:
A kind of high energy electronic ignition system for high pressure gas well, comprise input power supply and open flow device, it is characterized in that: the input power supply is connected with the igniter main frame, the igniter main frame is connected with spark lever through fire-resisting cable, described spark lever is fixed in open flow device top through the spark lever support, described spark lever is three, and every spark lever is connected with fire-resisting cable respectively, and three spark levers take turns switch operating through the PLC programming Control.
Described igniter main frame comprises successively will import of the connecting transforming circuit part that power conversion is the 2000V high-tension electricity, the accumulator part that the high-tension electricity of input is charged and the discharge circuit part of controlling stored electric energy release.
Described input power supply is two kinds, and a kind of is the 220V alternating current, and another kind is the 12V direct current.
Described transforming circuit partly comprises the transformer that the 12V direct current is converted to the inverter of 220V alternating current and the 220V alternating current is converted to the 2000V high-tension electricity.
Described accumulator partly comprises diode, electric capacity, resistance, bidirectional triode thyristor and inductance, and wherein, diode section is used for the 2000V high-voltage alternating electric rectification with input, behind current-limiting resistance, by discharging and recharging of electric capacity in bidirectional triode thyristor and the inductance control circuit.
Described discharge circuit comprise discharge tube and with discharge tube between the spark lever that is connected through fire-resisting cable.
Described fire-resisting cable skin is provided with ceramic material layer, is outside equipped with cable protection pipe at ceramic material layer, and described ceramic material layer is a porcelain tube, and described cable protection pipe is a stainless steel material, and described cable protection pipe is many formations, fastens through screw thread between per two.
Described spark lever comprises igniter head, igniting shaft and the connector that connects successively, spark lever is a three-decker, be followed successively by the spark lever inner core from the inside to the outside, insulating barrier and stainless steel skin, wherein insulating barrier is a ceramic material, wherein the ignitor on igniter head adopts 2520 stainless steels, and the igniting shaft adopts 304 stainless steels, screwed connection between igniting shaft and igniter head.
Advantage of the present invention shows:
1, because the present invention adopts the input power supply to be connected with the igniter main frame, the igniter main frame is connected with spark lever through fire-resisting cable, described spark lever is fixed in open flow device top through the spark lever support, and such technical scheme has realized the Long-distance Control igniting, and ignition performance accurately, efficiently.In addition, because the present invention adopts the version of transforming circuit, accumulator and discharge circuit, power supply to input carries out the high-tension electricity that first transformation is 2000V, store then and discharge, thereby realize the mode of igniting, discharge electric energy height, igniting is not easy to extinguish, the water that igniting is ejected easily in the present various sparking mode be can solve and the problem of going out, reliability height, no potential safety hazard sprayed, ignition performance accurately, efficiently, even under rugged environment,, also can successfully light a fire as long as gas concentration reaches the burning concentration lower limit.
2, the input power supply adopts two kinds of forms, generally adopts the 220V AC power, under situations such as power failure, can also directly import the 12V direct current, thereby can guarantee no matter the present invention can both continuous firing in electric still outage is arranged.
3, the fire-resisting cable of the present invention's employing is outside equipped with ceramic material layer; be outside equipped with cable protection pipe at ceramic material layer; such technical scheme can further protect cable not by high temperature melting; can be by short circuit under the condition that water under high pressure, mud are arranged, to guarantee that igniter also can operate as normal under the condition of long term high temperature.
4, the present invention adopts three spark levers, can take turns automatically to switch under the PLC programming Control, when several spark levers are contained in open flow pond diverse location, can realize multiple spot igniting in turn, can adapt to the influence of on-the-spot situation such as wind direction etc. so better.。
5, spark lever is a three-decker, is followed successively by the spark lever inner core from the inside to the outside, insulating barrier and stainless steel skin, and wherein insulating barrier is a ceramic material.The high temperature that produces when such technical scheme ability is lighted a fire, and the ignitor on igniter head adopts 2520 stainless steels, energy is withstand high temperatures further, the igniting shaft adopts 304 stainless steels, electric conductivity is better, in order to avoid cause the deadweight loss of ignition energy, screwed connection between igniting shaft and igniter head, convenient on-the-spot the installation.
6, native system has disposed the pure nickel fire-resisting cable, and has coated the stainless steel skin on fire-resisting cable, makes it to have characteristics such as very strong fire-resistant, high temperature resistant, acid-alkali-corrosive-resisting.Spark lever is made by stainless steel material, and it not only can corrosion-and high-temp-resistant, and the discharge energy height, can adapt to on-the-spot rugged environment.The firing tip of spark lever has self-purification capacity, anti-carbon deposit, anti-coking, igniting reliability height.Cause short circuit if firing tip is polluted by spot, then circuit will quit work automatically, and can work on after the cleaning spot.
Description of drawings
Below in conjunction with specification drawings and specific embodiments the present invention is made further supplementary notes, wherein:
Fig. 1 is the native system connection diagram
Fig. 2 is an igniter host panel schematic diagram
Fig. 3 is an igniter main frame interior circuit construction schematic diagram
Fig. 4 is the spark lever structure chart
Fig. 5 is fire-resisting cable and spark lever integrated structure schematic diagram
Mark among the figure;
21, open flow device; 22, fire-resisting cable; 23, spark lever; 24, spark lever support; 25, ceramic material layer; 26, cable protection pipe; 7, igniter head; 8, igniting shaft; 9, connector; 10, spark lever inner core; 11, insulating barrier; 12, stainless steel skin; 1, power unit; 2, amplifier section; 3, rectifying part; 4, switch control; 5, energy storage control section; 6, energy storage section; 13 fire-resisting cable positive poles; 14, fire-resisting cable negative pole; 15, protection tube buckle connector.
The specific embodiment
Embodiment 1
With reference to Figure of description 1, the invention discloses a kind of high energy electronic ignition system for high pressure gas well, comprise input power supply and open flow device 21, the input power supply is connected with the igniter main frame, the igniter main frame is connected with spark lever 23 through fire-resisting cable 22, described spark lever 23 is fixed in open flow device 21 tops through spark lever support 24, and the open flow device is an open flow device common in the prior art, waits parts to constitute by the spray tube.
Embodiment 2
With reference to Figure of description 3, another embodiment of the present invention is, on the basis of embodiment 1, described igniter main frame comprises successively will import of the connecting transforming circuit part that power conversion is the 2000V high-tension electricity, the accumulator part that the high-tension electricity of input is charged and the discharge circuit part of controlling stored electric energy release.Described transforming circuit partly comprises the transformer that the 12V direct current is converted to the inverter of 220V alternating current and the 220V alternating current is converted to the 2000V high-tension electricity.Described accumulator partly comprises diode, electric capacity, resistance, bidirectional triode thyristor and inductance, and wherein, diode section is used for the 2000V high-voltage alternating electric rectification with input, behind current-limiting resistance, by discharging and recharging of electric capacity in bidirectional triode thyristor and the inductance control circuit.Described discharge circuit comprise discharge tube and with discharge tube between the spark lever 23 that is connected through fire-resisting cable 22.
Embodiment 3
With reference to Figure of description 1, another embodiment of the present invention is, on the basis of embodiment 1, described input power supply is two kinds, and a kind of is the 220V alternating current, and another kind is the 12V direct current.
Embodiment 4
With reference to Figure of description 5; another embodiment of the present invention is; on the basis of the foregoing description; described fire-resisting cable 22 skins are provided with ceramic material layer 25; be outside equipped with cable protection pipe 26 at ceramic material layer 25, described ceramic material layer 25 is a porcelain tube, and described cable protection pipe 26 is a stainless steel material; described cable protection pipe 26 is many formations, fastens through screw thread between per two.
Embodiment 5
With reference to Figure of description 2, another embodiment of the present invention is, on the foregoing description basis, described spark lever 23 is three, and every spark lever 23 is connected with fire-resisting cable 22 respectively, and three spark levers 23 take turns switch operating through the PLC programming Control.
Embodiment 6
With reference to Figure of description 4, another embodiment of the present invention is, on the basis of the foregoing description, described spark lever 23 comprises igniter head 7, igniting shaft 8 and the connector 9 that connects successively, spark lever 23 is a three-decker, be followed successively by spark lever inner core 10 from the inside to the outside, insulating barrier 11 and stainless steel skin 12, wherein insulating barrier 11 is a ceramic material, wherein the ignitor on igniter head 7 adopts 2520 stainless steels, igniting shaft 8 adopts 304 stainless steels, screwed connection between igniting shaft 8 and igniter head 7.
Embodiment 7
As the present invention's one preferable embodiment, native system has adopted transformation energy storage discharge circuit, transforming circuit partly comprises inverter and transformer, be used for 220V alternating current or 12V direct current are converted into the 2000V high pressure, wherein, the effect of inverter is that the direct current with 12V is converted to the 220V alternating current, and the effect of transformer is that the 220V alternating current is converted to the 2000V High Level AC Voltage; Accumulator partly comprises elements such as diode, electric capacity, resistance, bidirectional triode thyristor, inductance, adopt printed circuit or electric wire to connect between them, wherein, diode section is used for the high-voltage alternating electric rectification, behind current-limiting resistance, by discharging and recharging of electric capacity in bidirectional triode thyristor and the inductance control circuit; Discharge circuit partly comprises discharge tube and spark lever 23, uses fire-resisting cable 22 to connect between them.When electric energy stored in the electric capacity reached certain value, discharge tube can puncture, and then the two poles of the earth on control point picker bar 23 tops puncture air and discharge.Wherein, switch sections adopts the PLC control circuit, can control three spark levers 23 by the fixed time igniting that circulates successively.
Native system can be realized the Long-distance Control igniting, and its ignition performance accurately, efficiently.Even under rugged environment, as long as gas concentration reaches the burning concentration lower limit, promptly can successfully light a fire, and spark lever 23 can continue operate as normal under the condition of the long-term burning baking of open flow gas (as methane).Native system is simple to operation, and functions such as button and indicator lamp come into plain view.In addition, the firing tip of spark lever 23 has self-purification capacity, anti-carbon deposit, anti-coking, igniting reliability height.Cause short circuit if firing tip is polluted by spot, then circuit will quit work automatically, and can work on after the cleaning spot.Through test, even firing tip inserts the electric spark that sends that also can continue in the mud fully, ignition effectiveness and energy are not subjected to mud influence at all.
Native system has also been realized two kinds of voltage inputs, i.e. 220V alternating current or 12V direct currents.Adopt the 220V AC power generally speaking; Under situations such as power failure, can also import the 12V direct current, the battery conversion by wherein is input to and makes it to keep operate as normal in the electronic ignition device.The time of continuous firing is relevant with accumulator capacity under the powering-off state.
Native system all adopts fire-resisting cable 22 by the igniter main frame to the connection of spark lever 23; near 10 meters in open flow pond mouth with interior position; also newly designed high-temperature-resistant structure; promptly installed the cable protection pipe 26 of one deck porcelain tube and one deck stainless steel material additional at fire-resisting cable 22 skins; to protect cable not by high temperature melting; cable under the condition that water under high pressure, mud are arranged by short circuit, also can operate as normal under the condition of long term high temperature to guarantee igniter.
The native system main frame is easy to install, and is easy and simple to handle, and realized the igniting in turn automatically of three bars.Only need press starting switch, three spark levers 23 just can switch automatically in turn through the PLC programming Control, and the course of work is: 1# spark lever 23 stopped 10 seconds after working 5 seconds then; 2# spark lever 23 is worked in the same way afterwards, is 3# spark lever 23 then.Three spark levers 23 circulate successively, until manually pressing stop button.Working time wherein and blanking time can set in advance.When several spark levers 23 are contained in open flow pond diverse location, can also realize multiple spot igniting in turn, so more can adapt to the on-the-spot situation such as the influence of wind direction.
Core circuit figure such as Fig. 3 of native system show.Boost through transformer by 12V direct current or 220V/50HZ alternating current, become HVDC after the silicon stack rectification, charge to storage capacitor C11-C15 through current-limiting resistance, through behind the certain hour, voltage on energy-storage capacitor reaches the discharge tube puncture and discharges, energy stored on the energy-storage capacitor is added on the semiconductor spark plug electrode by discharge tube K2, inductance L 1, fire-resisting cable 22, conducting rod, makes the semiconductor spark plug electrode end surface produce strong spark, thereby light combustible.After the energy on the energy-storage capacitor had discharged, discharge tube K2 recovered blocking state, just repeated the above-mentioned course of work later on.
By circuit diagram as can be known, entire circuit is by 220V power voltage supply (comprise direct input 220V alternating current and use inverter that the 12V direct current is converted to two kinds of situations of 220V alternating current), different with some other circuit, this circuit is to use transformer to amplify earlier, pass through the rectifying part rectification again, DC voltage discharge then.In the energy storage control section, the break-make of the magnitude of voltage control bidirectional triode thyristor Q1 on the bilateral diode D12, during the conducting of Q1 left and right sides, circuit is the capacitor C 11-C15 charging of energy storage section.Along with electric capacity charging, the voltage on the D12 also changes gradually, when the undertension on it so that during the Q1 conducting, the Q1 left and right sides turn-offs.Because when Q1 turn-offs, the electric current variation in the circuit makes in inductance L 1 and induces electromagnetic field, and this magnetic field can be controlled the K switch 2 that was in open mode originally and close at this moment.K2 closes, and the electric charge that is stored in the storage capacitor is discharged, and the energy that is discharged has punctured the air between the electrode that is connected the storage capacitor two ends.After the energy on the energy-storage capacitor had discharged, discharge tube K2 closed once more, returns to blocking state.This course of work constantly moves in circles, until manual unlocking K switch 1.
Except electronic component commonly used, some specific assembly need be chosen according to the combined factors such as condition of work at scene.According to design, voltage need be brought up to 2000V and discharge generation electric spark, so in the circuit of the output of circuit, need to carry the high pressure of 2000V, therefore can not adopt common being used to transmit the electric wire of 220V voltage, and to adopt resistant to elevated temperatures pure nickel fire-resisting cable 22, to adapt to on-the-spot hot environment.Because electrode need directly be placed on fluid jeting area top, and after lighting gas, need bear the baking of thermal-flame always, and the corrosion that will bear impurity such as acid solution, mud in the open flow pipeline, so it is fire-resistant, high temperature resistant, corrosion-resistant, antirust that ignitor needs, and guarantee can the short circuit because of being polluted between the two poles of the earth.
Consider above factor, thus ignitor need to make by resistant to elevated temperatures stainless steel, so selected 2520 materials for use at this.On-the-spot installation and the operation of igniting for convenience, electrode design is a coaxial manner, selects to use the ceramic material insulation between the two poles of the earth of electrode.Shaft uses 304 materials, and electric conductivity is better than igniter head 7, in order to avoid cause the deadweight loss of ignition energy, and convenient on-the-spot the installation with fixing.Adopt the mode of screwed connection between spark lever 23 and igniter head 7, the same ceramic material that uses insulate between igniting shaft 8 and the inner core.Spark lever 23 tail ends also are designed to the screw thread mode, so that be connected with cable.Spark lever 23 design drawings as shown in Figure 4.
In order to make spark lever 23 and the fire-resisting cable 22 can long-term work under near the situation of the high-temp combustion mouth of open flow pond; protection spark lever 23 and cable are not burnt out; and prevent situations such as they can not be short-circuited under the situation of exposing to the sun and rain for a long time, so need to adopt special safeguard procedures.Designed cable protection pipe 26 especially at this.Cable protection pipe 26 skins are the stainless steel protection pipe, use the ceramic material anti-flaming thermal-insulation between protection tube and the cable.For easy accessibility, cable protection pipe 26 is designed to long 1 meter of every joint, adopts the buckle connected mode between the two economize on electricity cable protection pipes 26, connects simple and convenient.The protector schematic diagram is seen shown in Figure 5.
Using method
Plug the attaching plug of igniter.
Open the ignition switch of igniter.
Three just circulations successively of spark lever 23 take turns to operate, and after promptly 1# spark lever 23 was worked 5 seconds, stop then; After 10 seconds, 2# spark lever 23 work 5 seconds stop then at interval; At interval after 10 seconds, 23 work of 3# spark lever stopped after 5 seconds, again 1# spark lever 23 work after 10 seconds at interval again.(5 seconds working time wherein and 10 seconds blanking time can set in advance.)
Successfully light after the open flow gas, close the ignition switch on the igniter, spark lever 23 promptly quits work.
After work finishes, close total power switch.