CN105135489A - Dual-air-source fuel gas ignition protecting device and work method thereof - Google Patents
Dual-air-source fuel gas ignition protecting device and work method thereof Download PDFInfo
- Publication number
- CN105135489A CN105135489A CN201510506869.8A CN201510506869A CN105135489A CN 105135489 A CN105135489 A CN 105135489A CN 201510506869 A CN201510506869 A CN 201510506869A CN 105135489 A CN105135489 A CN 105135489A
- Authority
- CN
- China
- Prior art keywords
- gas
- valve rod
- fuel gas
- jet hole
- low heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a dual-air-source fuel gas ignition protecting device and a work method thereof. The device comprises a high-heating-value fuel gas ignition end and a low-heating-value fuel gas ignition end. The high-heating-value fuel gas ignition end comprises a thermocouple and an injection tube suitable for high-heating-value fuel gas, and the injection tube is connected with one branch of a fuel gas ignition gas channel. The low-heating-value fuel gas ignition end comprises a thermocouple and an injection tube suitable for low-heating-value fuel gas, and the injection tube is connected with the other branch of the fuel gas ignition gas channel. Potentials are output according to the heating situation of the thermocouples after the positive and negative electrodes of the two thermocouples are reversely connected in series. By means of the location setting of the two thermocouples, flames of the injection tubes only heat the corresponding thermocouples to generate the potentials when fuel gas is correctly led into the ignition ends, and when the high-heating-value fuel gas is led into the low-heating-value fuel gas ignition end by mistake by the ignition ends, the flames heat the two thermocouples at the same time so that the output potentials offset each other or are weakened. Opening or closing of an air channel opening and closing control valve is controlled by whether the thermocouples generate effective thermal potentials in the ignition process or not, so that safety use is ensured.
Description
Technical field
The present invention relates to burning warmer technical field, particularly a kind of double-source gas is ignited protective device and method of work thereof.
Background technology
There is various gas supply on the market at present, such as high according to calorific value, low difference has liquefied gas, natural gas etc., corresponding gas utensil is also divided into liquefied gas, natural gas etc., also the integrated height of same gas utensil is had, fuel gas with low heat value is ignited end, two ends of igniting connect corresponding gas circuit branch of igniting again separately, so just not only can connect high heating value source of the gas but also low heat value source of the gas can be connected, but because the difference of fuel gases calorific value, use the gas utensil of the gas nozzle bore relative usage high heating value combustion gas of fuel gas with low heat value larger, so when fuel gas with low heat value (as natural gas gas) nozzle mistake introduces combustion gas (as: LNG gasifaction) of high heating value, the flame that gas utensil produces can be very high, then danger can be produced.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art; provide a kind of double-source gas to ignite protective device; this device to be ignited two thermocouple differential concatenations in end being heated situation output potential according to thermocouple by high and low calorific value fuel gas; whether produce by thermocouple conducting or the shutoff that available heat electromotive force controls switching control pilot in gas circuit between burn period; prevent gas utensil from occurring causing main burner to produce the dangerous situation of high flame due to maloperation, ensure safe handling.
Technical scheme of the present invention is achieved in that
A kind of double-source gas is ignited protective device, comprising:
High heating value gas ignition end, comprise the induction tunnel of thermocouple and the combustion gas of adaptation high heating value, this induction tunnel connects a branch of gas gas circuit of igniting;
Fuel gas with low heat value is ignited end, and comprise thermocouple and adapt to the induction tunnel of fuel gas with low heat value, this induction tunnel connects another branch of gas gas circuit of igniting;
Wherein to be heated situation output potential according to thermocouple after two thermocouple both positive and negative polarity differential concatenations; When the position of two thermocouples is arranged to ignite proper really introducing combustion gas, the flame of induction tunnel only heats corresponding thermocouple to produce electromotive force, and when wrong being ignited by high heating value combustion gas introducing fuel gas with low heat value of end of igniting is held, flame is heated to two thermocouples so that output potential is offset or weakens simultaneously.
As preferably, two thermocouple both positive and negative polarity differential concatenations refer to: the positive pole of two thermocouples is connected in series mutually, and two negative poles draw electromotive forces; Or the capacitors of two thermocouples connects, two positive poles draw electromotive force.
As preferably, high and low calorific value fuel gas end of igniting comprises an ignition electrode separately; Or high and low calorific value fuel gas ignite end share an ignition electrode.
As preferably, this protective device comprises the switching control pilot controlling gas path on-off as master switch, is provided with the magnetic valve of the conducting of gauge tap control valve or shutoff in it; The output of switching control pilot has two gas circuits to export, one tunnel is the gas gas circuit of igniting of carrying out gear switch between high and low calorific value fuel gas, an other road is the main gas circuit of leading to main burner, main gas circuit enters main burner through adjustable nozzle and burns in its surface ignition, and the effective admission sectional area of adjustable nozzle is ignited by the high and low calorific value fuel gas of an adjustment and held the gas kind converter of gear switch to control.Adjustable nozzle is ignited with the high and low calorific value fuel gas of control and is held the gas kind converter of gear switch to be linked, and when gas kind converter is adjusted to different gear, automatically regulates again adjustable nozzle to obtain corresponding effective admission sectional area, kills two birds with one stone.If the combustion gas of high heating value then reduces the effective admission sectional area of nozzle, if low-calorie combustion gas, then increase the effective admission sectional area of nozzle, thus maintain the rated power of main burner.
As preferably, described gas kind converter comprises:
Valve body, valve body periphery be provided with low heat value ignite bring out gas port, high heating value ignite bring out gas port, end gas circuit air inlet and primary air inlet of igniting, be provided with a spool periphery being arranged with notch in valve body, spool action makes notch be communicated with low heat value to ignite and bring out gas port with igniting to hold gas circuit air inlet or be communicated with high heating value and ignite and bring out gas port and ignite and hold gas circuit air inlet;
Adjustable nozzle, is communicated with primary air inlet, and it is arranged on described valve body lower end, and adjustable nozzle lower end is provided with jet hole;
Valve seat, it is fixedly installed on valve body upper end, and sliding in valve seat is equipped with upper valve rod, and upper valve rod upper end is exposed to outside valve seat, and upper valve rod lower end is connected with lower valve rod, and lower valve rod explores downward to described jet hole place through spool; The spring that upper valve rod is resetted is provided with in valve seat, upper valve rod move down and with movable valve plug action thus the end gas circuit of igniting of carrying out high heating value combustion gas and fuel gas with low heat value switch, lower valve rod is synchronized with the movement with upper valve rod and matches with jet hole simultaneously, thus have adjusted the corresponding effective admission sectional area needed for high and low calorific value fuel gas of jet hole.
As preferably, spool, valve body is with tapering, lower valve rod and spool are slidably matched, spool upper surface is provided with integrated housing with it, spring housing is on upper valve rod and be arranged in housing, upper valve rod is provided with boss, the upper and lower two ends of spring respectively with boss, spool offsets, housing has the interlock notch matched with boss, valve seat inside be provided with one high and one low and stagger arrange low, high heating value combustion gas gear groove, upper valve rod moves down and makes boss snap in interlock notch to rotate upper valve rod simultaneously and drive Spool rotating thus carry out height, the end gas circuit of igniting of fuel gas with low heat value switches, and boss snaps in the location that corresponding gear groove realizes lower valve rod.Spool makes it be arranged in valve body with axial restraint, circumferential rotating manner with tapering, hermetic seal is kept between spool and valve interior wall, spool is abutted location by elastic force and makes it to keep hermetic seal between valve body by spring, and spring provides restoring force to the movement of upper valve rod.Upper valve rod moves down and rotates and makes spool regulate different gear, boss simultaneously on upper valve rod snaps in again the location that corresponding gear groove realizes lower valve rod, design ingenious, take into account again the effective admission sectional area that have adjusted main burner while regulating end gear of igniting, kill two birds with one stone.
As preferably, described notch cross section is arc, and low heat value is ignited and brought out gas port and high heating value and ignite and bring out gas port on the same line, and end gas circuit of igniting air inlet is positioned at high and low calorific value and ignites and bring out the vertical direction of straight line residing for gas port.Notch cross section is preferably the sector of 90 degree, by such setting, makes the Spool rotating 90 degree end gas circuit air inlet that can make to ignite ignite with high and low calorific value respectively and bring out gas port and communicate.
As preferably, spool slides up and down and is arranged in valve body, lower valve rod is fixedly connected with spool, and low, high heating value is ignited and brought out gas port with igniting and hold gas circuit air inlet to be arrange along center spool axis direction, and ignites and hold gas circuit air inlet to be arranged on low, high heating value to ignite and bring out between gas port; Valve body upper end is shrunk to a saddle, upper valve rod is provided with boss, spring housing on upper valve rod and the upper and lower two ends of spring offset with saddle, boss respectively, one high and one low and setting of staggering low, high heating value combustion gas gear groove is provided with in valve seat inside, upper valve rod move down make lower valve rod, valve spool thus carry out high and low calorific value fuel gas ignite end gas circuit switch, and upper valve rod rotate make boss correspondence snap in the location that different gear grooves realizes lower valve rod and spool.This kind of mode makes spool realize gear switch in a sliding manner along the direction of upper and lower valve rod axis, and when the openings of sizes of notch makes upper valve rod rotation position to different gear grooves, can not have influence on the inlet, outlet of gas circuit.
As preferably, described lower valve rod lower end is taper, and during low heat value gear, lower valve rod lower end departs from jet hole, and during high heating value gear, lower valve rod lower end is inserted in jet hole and the effective admission sectional area of jet hole is changed.In this kind of mode, jet hole is single pore, and the tapered portion of lower valve rod lower end enters jet hole place, makes jet hole be that circular air inlet becomes annular air scoop from cross section, thus reaches the object regulating effective admission sectional area.
As preferably, described lower valve rod lower end is cylindrical, and lower valve rod lower end diameter is less than the caliber size of jet hole, and during low heat value gear, lower valve rod lower end departs from jet hole; During high heating value gear, jet hole is inserted in lower valve rod lower end, and the effective admission sectional area of jet hole is changed.In this kind of mode, jet hole is single pore, and lower valve rod lower end is cylindrical shape, and cylinder enters jet hole, jet hole can be made equally to be that circular air inlet becomes annular air scoop from cross section, thus reach the object regulating effective admission sectional area.
As preferably, described lower valve rod lower end is cylindrical, and jet hole place is provided with multiple pore, and lower valve rod lower end cover has O-ring seals, and during low heat value gear, lower valve rod and jet hole separate makes all pores keep through; And during high heating value gear, lower valve rod moves down and makes lower valve rod lower end block a wherein pore thus make the effective admission sectional area of jet hole change.In this mode, jet hole place is provided with multiple pore, and such as by the main pore of middle with form around the secondary pore of main gas cell distribution, when lower valve rod moves down, main pore blocked by the cylinder of lower end, and make time pore keep conducting, reach the object regulating effective admission sectional area in this way equally.
As preferably, described lower valve rod lower end is taper, jet hole place is provided with multiple pore, during low heat value gear, lower valve rod and jet hole separate makes all pores keep through, and during high heating value gear, lower valve rod moves down and makes lower valve rod lower end block a wherein pore thus make the effective admission sectional area of jet hole change.Similar with upper a kind of mode, only lower valve rod lower end is designed to taper, effectively can eliminate the gap error between cylinder and pore.
As preferably, lower valve rod bottom is shrunk to a push rod, push rod upper end is fixed with a back-up ring, push rod lower end movable sleeve is provided with a sealing gasket, push rod is arranged with spring, and the upper and lower two ends of spring offset with back-up ring, sealing gasket respectively, and jet hole place is provided with multiple pore, during low heat value gear, on lower valve rod, shipper pole movable sealing pad disengaging jet hole makes all pores keep through; During high heating value gear, lower valve rod moves down and makes spring sealing gasket is pressed on corresponding pore place, thus reduces the effective admission sectional area of jet hole.By this mode, make sealing gasket be against corresponding pore place, and spring compress, and prevents gas leakage, ensure that sealing to sealing gasket.
Based on a method of work for above-mentioned protective device, comprising:
Ignite proper true introducing combustion gas time, the thermocouple that only heating is corresponding, the electromotive force that thermocouple produces makes the magnetic valve adhesive in switching control pilot, thus makes gas circuit conducting;
When mistake fuel gas with low heat value is introduced high heating value gas ignition end time, induction tunnel cannot be lighted, thermocouple potential-free produce, the magnetic valve adhesive in switching control pilot cannot be made, gas circuit turn off;
When mistake by high heating value combustion gas introduce fuel gas with low heat value ignite end time, the induction tunnel of fuel gas with low heat value ignition device jets out flames can be abnormal elongated, heat two thermocouples simultaneously, two thermocouples can produce electromotive force simultaneously and offset, also cannot make the magnetic valve adhesive in switching control pilot, gas circuit turns off.
The design philosophy of the present invention and the beneficial effect that have employed technique scheme are:
The invention provides a kind of double-source gas to ignite protective device and method of work thereof; this protective device to be ignited two thermocouple differential concatenations in end being heated situation output potential according to thermocouple by high and low calorific value fuel gas; whether produce by thermocouple conducting or the shutoff that available heat electromotive force controls switching control pilot in gas circuit between burn period; prevent gas utensil from occurring causing main burner to produce the dangerous situation of high flame due to maloperation, ensure safe handling.
Specifically, the high and low calorific value fuel gas nozzle bore size of induction tunnel in end of igniting is different, adapt to high and low combustion gas respectively separately, when the introducing combustion gas that system is correct, the thermocouple that only heating is corresponding, the electromotive force that thermocouple produces makes the magnetic valve adhesive in switching control pilot, thus makes gas circuit conducting; When system mistake fuel gas with low heat value is introduced high heating value gas ignition end time, because the nozzle of induction tunnel in high heating value gas ignition end is according to injection high heating value combustion gas (such as liquefied gas) standard design, fuel gas with low heat value can introduce too much air via the induction tunnel of high heating value gas ignition end, exceed the air-fuel ratio of lighting of fuel gas with low heat value, cannot light, thermocouple also produces with regard to potential-free, cannot make the magnetic valve adhesive in switching control pilot, and gas circuit turns off; When system mistake by high heating value combustion gas introduce fuel gas with low heat value ignite end time, the nozzle of induction tunnel of igniting in end due to fuel gas with low heat value designs according to fuel gas with low heat value (such as natural gas), so nozzle bore is larger, and high heating value gaseous-pressure is larger, like this can be abnormal elongated with regard to making the induction tunnel of fuel gas with low heat value ignition device jet out flames, heat two thermocouples simultaneously, two thermocouples can produce electromotive force simultaneously and offset, also cannot make the magnetic valve adhesive in switching control pilot, gas circuit turns off.
Again furtherly, corresponding thermocouple is heated again while the flame ignition main burner that the present invention is sprayed by induction tunnel, the effective electromotive force produced by thermocouple carrys out the magnetic valve whether adhesive of gauge tap control valve, when system correctly introduces combustion gas, the flame of induction tunnel becomes ever-burning flame, the corresponding thermocouple of meeting continuous heating, its electromotive force continuing to produce can make the magnetic valve of switching control pilot continue the conducting of adhesive maintenance valve, therefore except ignition module needs battery without the need to again to switching control pilot external power supply or increase battery magnetic valve is controlled, thus effectively can save electric energy, eliminate the trouble and worry of user.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of control system of the present invention in embodiment 1;
Fig. 2 is the connection equivalent circuit diagram of magnetic valve in two thermocouples and switching control pilot;
Fig. 3 is the equivalent circuit diagram of another type of attachment of magnetic valve in two thermocouples and switching control pilot;
Fig. 4 is the schematic diagram that control system gear switch to fuel gas with low heat value is ignited when holding;
Fig. 5 is the schematic diagram that the paramount calorific value fuel gas of control system gear switch is ignited when holding;
Fig. 6 be high and low calorific value fuel gas ignite end mounting structure schematic diagram;
Fig. 7 is that fuel gas with low heat value is ignited the internal structure schematic diagram of induction tunnel in end;
Fig. 8 is the A portion enlarged drawing of Fig. 7;
When Fig. 9 is system correct introducing combustion gas, state diagram during high heating value gas ignition end burning;
Figure 10 is the equivalent circuit diagram of Fig. 9;
When Figure 11 is system correct introducing combustion gas, fuel gas with low heat value ignite end burning time state diagram;
Figure 12 is the equivalent circuit diagram of Figure 11;
Figure 13 be system mistake by high heating value combustion gas introduce fuel gas with low heat value ignite end time, fuel gas with low heat value ignite end burning time state diagram;
Figure 14 is the equivalent circuit diagram of Figure 13;
Figure 15 is the perspective view of gas kind converter;
Figure 16 is the planar structure schematic diagram of gas kind converter;
Figure 17 is the A-A sectional view of Figure 16;
Figure 18 is the B-B sectional view of Figure 16;
Figure 19 is the perspective view of another angle of gas kind converter;
Figure 20 is the fit structure schematic diagram of upper valve rod and spool;
Figure 21 is the plan structure schematic diagram of Figure 16;
Figure 22 is the perspective view of valve gap;
Figure 23 is the internal structure schematic diagram of valve gap;
Schematic diagram when Figure 24 is the boss screw-in high heating value combustion gas gear groove on upper valve rod;
Schematic diagram when Figure 25 is the boss screw-in high heating value combustion gas gear groove on upper valve rod;
Figure 26,27 is the fit structure schematic diagram of lower valve rod and jet hole in embodiment 1;
Figure 28,29 is the fit structure schematic diagram of lower valve rod and jet hole in embodiment 2;
Figure 30,31 is the fit structure schematic diagram of lower valve rod and jet hole in embodiment 3;
Figure 32,33 is the fit structure schematic diagram of lower valve rod and jet hole in embodiment 4;
Figure 34,35 is the fit structure schematic diagram of lower valve rod and jet hole in embodiment 5;
Figure 36,37 is that in embodiment 6, spool switches to fuel gas with low heat value respectively and to ignite end gear and the schematic diagram of high heating value gas ignition end gear;
When Figure 38 is the introducing combustion gas that in embodiment 7, system is correct, state diagram during high heating value gas ignition end burning;
When Figure 39 is the introducing combustion gas that in embodiment 7, system is correct, fuel gas with low heat value ignite end burning time state diagram;
Figure 40 be in embodiment 7 system mistake by high heating value combustion gas introduce fuel gas with low heat value ignite end time, fuel gas with low heat value ignite end burning time state diagram.
Detailed description of the invention
The specific embodiment of the present invention is as follows:
Embodiment: double-source gas of the present invention protective device of igniting is the important component part of safety-type double-source gas control system in the present embodiment; as shown in Fig. 1 ~ 27; a kind of safety-type double-source gas control system, comprise low heat value pressure maintaining valve 1, high heating value pressure maintaining valve 2 and:
Switching control pilot 3, as gas circuit master switch for controlling gas path on-off, it connects low heat value pressure maintaining valve 1, high heating value pressure maintaining valve 2 respectively, described switching control pilot 3 has two gas circuits to export, one tunnel is gas gas circuit 6 of igniting, an other road is lead to the main gas circuit 5 of main burner 4, and Qi Zhe road of igniting leads to high heating value gas ignition end 7 or fuel gas with low heat value through gear switch again ignites end 8;
High and low calorific value fuel gas end 7,8 of igniting comprises an ignition electrode 9a, 9b, thermocouple 10a, a 10b separately and adapts to each induction tunnel 11a, 11b of high and low calorific value fuel gas respectively, wherein the both positive and negative polarity of two thermocouples 10a, 10b is by wire differential concatenation, and is connected in series with the magnetic valve in switching control pilot 3 simultaneously; When the position of two thermocouples 10a, 10b is arranged so that system correctly introduces combustion gas, the flame of induction tunnel only heats corresponding thermocouple to produce the magnetic valve adhesive maintenance conducting that electromotive force makes switching control pilot, and when system mistake high heating value combustion gas is introduced fuel gas with low heat value ignite end time, flame is heated to two thermocouples so that electromotive force simultaneously and offsets thus make switching control pilot keep turning off;
IGC Module (not shown), the battery case, the pulse igniter that comprise button ignition switch and be connected by wire with button ignition switch respectively, battery case is the power supply of pulse igniter, and pulse igniter is connected with two ignition electrode 9a, 9b.
As shown in Figure 2 and Figure 3, two thermocouples 10a, 10b are also connected in series with the magnetic valve in switching control pilot 3 by wire differential concatenation simultaneously and refer to: the positive pole of two thermocouples is connected in series mutually, and two negative poles are drawn and are connected in series with the magnetic valve in switching control pilot; Or the capacitors of two thermocouples connects, two positive poles are drawn and are connected in series with the magnetic valve in switching control pilot.
As shown in Figure 6, high and low calorific value fuel gas end 7,8 of igniting is fixed on a bearing 12 jointly, described fuel gas with low heat value ignite end induction tunnel 11b in be provided with air window 13 and just to air window 13 arrange gas nozzle 14, when combustion gas is sprayed by gas nozzle 14, air window 13 can be produced negative-pressure ejecting and enter after a certain amount of air mixes with combustion gas in induction tunnel 11b and sprayed by the spout on induction tunnel, lights after-combustion form pilot flame through ignition electrode.
As shown in Figure 1, main gas circuit 5 enters main burner 4 through adjustable nozzle 15 and burns in its surface ignition, and the effective admission sectional area of adjustable nozzle 15 regulates the ignite gas kind converter 16 of end 7,8 gear switch of high and low calorific value fuel gas to control by one.
Specifically, as shown in Figure 15 ~ 25, the description of gas kind converter is described according to the state of vertical display, and shown gas kind converter 16 comprises:
Valve body 17, valve body 17 periphery is provided with low heat value and ignites and bring out gas port 18, high heating value is ignited and is brought out gas port 19, end gas circuit of igniting air inlet 20 and primary air inlet 21, the spool 23 periphery being arranged with notch 22 is provided with in valve body 17, described notch 22 cross section is arc, low heat value is ignited and is brought out gas port 18 and high heating value and ignite and bring out gas port 19 on the same line, end gas circuit of igniting air inlet 20 is positioned at height, low heat value is ignited and is brought out gas port 18, the vertical direction of straight line residing for 19, and primary air inlet 21 is with high, low heat value is ignited and is brought out gas port 18, 19 to stagger setting up and down in valve body 17 short transverse, spool 23 do spinning movement make notch 22 be communicated with low heat value ignite bring out gas port 18 to ignite with low heat value bring out gas port 18, high heating value ignites and brings out gas port about 19 and stagger and arranges, end gas circuit of igniting air inlet 20 or being communicated with high heating value ignites to bring out gas port 19 and ignite and hold gas circuit air inlet 20,
Adjustable nozzle 15, is communicated with primary air inlet 21, and it is arranged on described valve body 17 lower end, and adjustable nozzle 15 lower end is provided with jet hole 24;
Valve seat 25, its mode connected by riveted joint or screw is fixedly installed on valve body 17 upper end, and sliding in valve seat 25 is equipped with upper valve rod 26, and upper valve rod 26 upper end is exposed to outside valve seat 25, upper valve rod 26 lower end is fixedly connected with lower valve rod 27, and lower valve rod 27 explores downward to described jet hole 24 place through spool 23; The spring 28 that upper valve rod 26 is resetted is provided with in valve seat 25, upper valve rod 26 move down and with movable valve plug 23 action thus the end gas circuit of igniting of carrying out high heating value combustion gas and fuel gas with low heat value switch, lower valve rod 27 is synchronized with the movement with upper valve rod 26 and matches with jet hole 24 simultaneously, thus have adjusted the effective admission sectional area needed for the corresponding high and low calorific value fuel gas of jet hole 24.
Again furtherly, spool 23, valve body 17 are with tapering, lower valve rod 27 and spool 23 are slidably matched and keep hermetic seal between lower valve rod 27 and spool 23, spool 23 upper surface is provided with integrated housing 29 with it, spring 28 to be enclosed within upper valve rod 26 and to be arranged in housing 29, upper valve rod 26 is provided with boss 30, and spring about 28 two ends offset with boss 30, spool 23 respectively, housing 29 have the interlock notch 31 matched with boss 30; As shown in Figure 22 ~ 25, valve seat 25 cross section is circular, one high and one low and setting of staggering low, high heating value combustion gas gear groove 32,33 is provided with in valve seat 25 inside, upper valve rod 26 moves down and makes boss 30 snap in interlock notch 31 to rotate upper valve rod 26 simultaneously and to rotate with movable valve plug 23 thus the end gas circuit of igniting of carrying out high and low calorific value fuel gas switches, and the gear groove that boss 30 snaps in correspondence realizes the location of upper valve rod 26, lower valve rod 27.
As shown in figure 26, described lower valve rod 27 lower end is taper, and during low heat value gear, lower valve rod lower end departs from jet hole 24; As shown in figure 27, during high heating value gear, lower valve rod 27 lower end is inserted in jet hole 24 and the effective admission sectional area of jet hole 24 is changed, specifically, the air inlet cross section of jet hole 24 is that circle becomes annular, thus reduce effective admission sectional area, to adapt to the higher high heating value combustion gas of pressure.
The magnetic valve of initial switch control valve is in the normally off of non-adhesive, when control system correctly introduces high heating value combustion gas, as shown in Figure 9, Figure 10, the thermocouple that only heating is corresponding, fuel gas with low heat value is ignited and is held corresponding thermocouple to be equivalent in circuit be connected in series a resistance, because the resistance of this thermocouple is smaller, so impact is very little, the electromotive force that the thermocouple be heated by the flame produces makes the magnetic valve adhesive in switching control pilot, thus makes gas circuit conducting that safety control circuit can be made to work normally.
As shown in Fig. 9,11,13, high and low calorific value fuel gas is ignited to hold and is all in main burner homonymy, two thermocouples keep mode that is vertical or near vertical to put with induction tunnel contiguous separately, during correct introducing combustion gas, the flame of corresponding induction tunnel ejection is heated to contiguous thermocouple, and when wrong being ignited by high heating value combustion gas introducing fuel gas with low heat value is held, the flame of induction tunnel ejection is heated to two thermocouples simultaneously, is therefore put by the position of adjustment two thermocouples and can achieve the above object according to the distance exam of the length of flame.
When control system correctly introduces fuel gas with low heat value, as shown in Figure 11,12, the same thermocouple that only heating is corresponding, the thermocouple that high heating value gas ignition end is corresponding is also equivalent to be connected in series a resistance in circuit, because the resistance of this thermocouple is smaller, so impact is very little, the electromotive force that the thermocouple be heated by the flame produces makes the magnetic valve adhesive in switching control pilot, thus makes gas circuit conducting that safety control circuit can be made to work normally.
When control system mistake by high heating value combustion gas introduce fuel gas with low heat value ignite end time, as shown in Figure 13,14, fuel gas with low heat value ignites the flame held can be abnormal elongated, and its can heat two thermocouples 9a, 9b simultaneously, two thermocouples can produce electromotive force simultaneously, due to reverse serial connection, the electromotive force acting on the magnetic valve in sequential circuit will be very low, is almost equal to and cancels out each other, therefore magnetic valve adhesive can not be made, thus normally cannot open gas circuit, gas utensil can not work, thus guarantees safety.
When control system mistake fuel gas with low heat value is introduced high heating value gas ignition end time, fuel gas with low heat value can introduce too much air via the induction tunnel of high heating value gas ignition end, exceed the air-fuel ratio of lighting of fuel gas with low heat value, cannot light, thermocouple also produces with regard to potential-free, cannot make the magnetic valve adhesive in switching control pilot, gas circuit turns off; Gas utensil can not work equally, ensure that safety.
Embodiment 2: as different from Example 1, as shown in Figure 28,29, described lower valve rod lower end is cylindrical, and lower valve rod lower end diameter is less than the caliber size of jet hole, and during low heat value gear, lower valve rod lower end departs from jet hole; During high heating value gear, jet hole is inserted in lower valve rod lower end, and the effective admission sectional area of jet hole is changed.
Embodiment 3: as shown in Figure 30,31, in the present embodiment, described lower valve rod 27 lower end is cylindrical, jet hole place is provided with multiple pore 35, lower valve rod lower end cover has O-ring seals 34, and during low heat value gear, lower valve rod and jet hole separate makes all pores keep through; And during high heating value gear, lower valve rod moves down and makes lower valve rod lower end block a wherein pore thus make the effective admission sectional area of jet hole change.
Embodiment 4: as shown in Figure 32,33, in the present embodiment, described lower valve rod 27 lower end is taper, jet hole place is provided with multiple pore 35, during low heat value gear, lower valve rod and jet hole separate makes all pores keep through, and during high heating value gear, and lower valve rod moves down and makes lower valve rod lower end block a wherein pore thus the effective admission sectional area of jet hole is changed.
Embodiment 5: as Figure 34, shown in 35, in the present embodiment, lower valve rod 27 bottom is shrunk to a push rod 36, push rod 36 upper end is fixed with a back-up ring 37, push rod 36 lower end movable sleeve is provided with a sealing gasket 38, hermetic seal is kept between sealing gasket 38 and push rod 36, push rod 36 is arranged with spring 28, spring about 28 two ends respectively with back-up ring 37, sealing gasket 38 offsets, jet hole 24 place is provided with multiple pore 35, pore wherein inwardly protrudes from jet hole 24, during low heat value gear, on lower valve rod 37 shipper pole movable sealing pad 38 depart from jet hole make all pores keep through, during high heating value gear, lower valve rod 27 moves down and makes spring that sealing gasket 38 is pressed on corresponding pore place, thus reduces the effective admission sectional area of jet hole.
Embodiment 6: the present embodiment principle is substantially the same manner as Example 1, unlike the structure of gas kind converter, as shown in Figure 36,37, spool 23 slides up and down and is arranged in valve body 17, lower valve rod 27 is fixedly connected with spool 23, low, high heating value is ignited to bring out gas port 19,18 and ignite and is held gas circuit air inlet 20 to be arrange along center spool axis direction, and end gas circuit air inlet 20 of igniting is arranged on low, high heating value ignites and bring out between gas port 19,18, valve body 17 upper end is shrunk to a saddle 39, with similar shown in Figure 20, upper valve rod 26 is provided with boss 30, spring 28 be enclosed within upper valve rod 26 and spring about 28 two ends respectively with saddle 39, boss 30 offsets, equally, the setting of the inner gear groove of valve seat is also identical with embodiment 1, namely as shown in Figure 22 ~ 25, valve seat 25 cross section is circular, be provided with in valve seat 25 inside one high and one low and stagger arrange low, high heating value combustion gas gear groove 32, 33, upper valve rod 26 moves down and makes boss 30 snap in interlock notch 31 to rotate upper valve rod 26 simultaneously and be with movable valve plug 23 to rotate thus carry out height, the end gas circuit of igniting of fuel gas with low heat value switches, and the gear groove that boss 30 snaps in correspondence realizes upper valve rod 26, the location of lower valve rod 27.
Embodiment 7: as shown in Figure 38 ~ 40, in the present embodiment, high, fuel gas with low heat value is ignited to hold and is all in main burner homonymy, the thermocouple 10a of high heating value gas ignition end is bundled on corresponding induction tunnel 11a, and the head of this thermocouple 10a tilts slightly toward the jet hole of induction tunnel 11a, and face fuel gas with low heat value and to ignite the jet hole of induction tunnel 11b of end, the ignite head of thermocouple 10b of end of fuel gas with low heat value is in the medium position of the head line of induction tunnel 11b jet hole and thermocouple 10a, during correct introducing combustion gas, the flame of corresponding induction tunnel ejection is heated to contiguous thermocouple, and when wrong being ignited by high heating value combustion gas introducing fuel gas with low heat value is held, the flame that induction tunnel 11b sprays is heated to two thermocouple 10a simultaneously, 10b.
The control system provided various embodiments of the present invention above and method are described in detail, apply specific case in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, the change of the relative position that each part of such as igniting end is installed, or adopt an ignition electrode to carry out alternative two ignition electrodes, a wherein ground connection of two lead-in wires of two thermocouples again or after series connection, one end of magnetic valve leads back from ground wire simultaneously, only forming loop with the magnetic valve in a wire connecting valve control valve again, is consistent with thought of the present invention.In sum, this description should not be construed as limitation of the present invention.
Claims (13)
1. double-source gas is ignited a protective device, it is characterized in that comprising:
High heating value gas ignition end, comprise the induction tunnel of thermocouple and the combustion gas of adaptation high heating value, this induction tunnel connects a branch of gas gas circuit of igniting;
Fuel gas with low heat value is ignited end, and comprise thermocouple and adapt to the induction tunnel of fuel gas with low heat value, this induction tunnel connects another branch of gas gas circuit of igniting;
Wherein to be heated situation output potential according to thermocouple after two thermocouple both positive and negative polarity differential concatenations; When the position of two thermocouples is arranged to ignite proper really introducing combustion gas, the flame of induction tunnel only heats corresponding thermocouple to produce electromotive force, and when wrong being ignited by high heating value combustion gas introducing fuel gas with low heat value of end of igniting is held, flame is heated to two thermocouples so that output potential is offset or weakens simultaneously.
2. double-source gas according to claim 1 is ignited protective device, it is characterized in that: two thermocouple both positive and negative polarity differential concatenations refer to: the positive pole of two thermocouples is connected in series mutually, and two negative poles draw electromotive forces; Or the capacitors of two thermocouples connects, two positive poles draw electromotive force.
3. double-source gas according to claim 1 is ignited protective device, it is characterized in that: high and low calorific value fuel gas end of igniting comprises an ignition electrode separately; Or high and low calorific value fuel gas ignite end share an ignition electrode.
4. double-source gas according to claim 1 is ignited protective device, it is characterized in that: this protective device comprises the switching control pilot controlling gas path on-off as master switch, is provided with the magnetic valve of the conducting of gauge tap control valve or shutoff in it; The output of switching control pilot has two gas circuits to export, one tunnel is the gas gas circuit of igniting of carrying out gear switch between high and low calorific value fuel gas, an other road is the main gas circuit of leading to main burner, main gas circuit enters main burner through adjustable nozzle and burns in its surface ignition, and the effective admission sectional area of adjustable nozzle is ignited by the high and low calorific value fuel gas of an adjustment and held the gas kind converter of gear switch to control.
5. double-source gas according to claim 4 is ignited protective device, it is characterized in that: described gas kind converter comprises:
Valve body, valve body periphery be provided with low heat value ignite bring out gas port, high heating value ignite bring out gas port, end gas circuit air inlet and primary air inlet of igniting, be provided with a spool periphery being arranged with notch in valve body, spool action makes notch be communicated with low heat value to ignite and bring out gas port with igniting to hold gas circuit air inlet or be communicated with high heating value and ignite and bring out gas port and ignite and hold gas circuit air inlet;
Adjustable nozzle, is communicated with primary air inlet, and it is arranged on described valve body lower end, and adjustable nozzle lower end is provided with jet hole;
Valve seat, it is fixedly installed on valve body upper end, and sliding in valve seat is equipped with upper valve rod, and upper valve rod upper end is exposed to outside valve seat, and upper valve rod lower end is connected with lower valve rod, and lower valve rod explores downward to described jet hole place through spool; The spring that upper valve rod is resetted is provided with in valve seat, upper valve rod move down and with movable valve plug action thus the end gas circuit of igniting of carrying out high heating value combustion gas and fuel gas with low heat value switch, lower valve rod is synchronized with the movement with upper valve rod and matches with jet hole simultaneously, thus have adjusted the corresponding effective admission sectional area needed for high and low calorific value fuel gas of jet hole.
6. double-source gas according to claim 5 is ignited protective device, it is characterized in that: spool, valve body is with tapering, lower valve rod and spool are slidably matched, spool upper surface is provided with integrated housing with it, spring housing is on upper valve rod and be arranged in housing, upper valve rod is provided with boss, the upper and lower two ends of spring respectively with boss, spool offsets, housing has the interlock notch matched with boss, valve seat inside be provided with one high and one low and stagger arrange low, high heating value combustion gas gear groove, upper valve rod moves down and makes boss snap in interlock notch to rotate upper valve rod simultaneously and drive Spool rotating thus carry out height, the end gas circuit of igniting of fuel gas with low heat value switches, and boss snaps in the location that corresponding gear groove realizes lower valve rod.
7. double-source gas according to claim 5 is ignited protective device; it is characterized in that: described notch cross section is arc; low heat value is ignited and is brought out gas port and high heating value and ignite and bring out gas port on the same line, and end gas circuit of igniting air inlet is positioned at high and low calorific value and ignites and bring out the vertical direction of straight line residing for gas port.
8. double-source gas according to claim 5 is ignited protective device; it is characterized in that: described lower valve rod lower end is taper; during low heat value gear; lower valve rod lower end departs from jet hole; during high heating value gear, lower valve rod lower end is inserted in jet hole and the effective admission sectional area of jet hole is changed.
9. double-source gas according to claim 5 is ignited protective device, it is characterized in that: described lower valve rod lower end is cylindrical, and lower valve rod lower end diameter is less than the caliber size of jet hole, and during low heat value gear, lower valve rod lower end departs from jet hole; During high heating value gear, jet hole is inserted in lower valve rod lower end, and the effective admission sectional area of jet hole is changed.
10. double-source gas according to claim 5 is ignited protective device, it is characterized in that: described lower valve rod lower end is cylindrical, and jet hole place is provided with multiple pore, lower valve rod lower end cover has O-ring seals, during low heat value gear, lower valve rod and jet hole separate makes all pores keep through; And during high heating value gear, lower valve rod moves down and makes lower valve rod lower end block a wherein pore thus make the effective admission sectional area of jet hole change.
11. double-source gas according to claim 5 are ignited protective device; it is characterized in that: described lower valve rod lower end is taper; jet hole place is provided with multiple pore; during low heat value gear; lower valve rod and jet hole separate makes all pores keep through; and during high heating value gear, lower valve rod moves down and makes lower valve rod lower end block a wherein pore thus make the effective admission sectional area of jet hole change.
12. double-source gas according to claim 5 are ignited protective device, it is characterized in that: lower valve rod bottom is shrunk to a push rod, push rod upper end is fixed with a back-up ring, push rod lower end movable sleeve has penetrated a sealing gasket, on push rod, spring penetrated by cover, and the upper and lower two ends of spring offset with back-up ring, sealing gasket respectively, and jet hole place is provided with multiple pore, during low heat value gear, on lower valve rod, shipper pole movable sealing pad disengaging jet hole makes all pores keep through; During high heating value gear, lower valve rod moves down and makes spring sealing gasket is pressed on corresponding pore place, thus reduces the effective admission sectional area of jet hole.
13. 1 kinds, based on the method for work of protective device described in claim 4, is characterized in that:
Ignite proper true introducing combustion gas time, the thermocouple that only heating is corresponding, the electromotive force that thermocouple produces makes the magnetic valve adhesive in switching control pilot, thus makes gas circuit conducting;
When mistake fuel gas with low heat value is introduced high heating value gas ignition end time, induction tunnel cannot be lighted, thermocouple potential-free produce, the magnetic valve adhesive in switching control pilot cannot be made, gas circuit turn off;
When mistake by high heating value combustion gas introduce fuel gas with low heat value ignite end time, the induction tunnel of fuel gas with low heat value ignition device jets out flames can be abnormal elongated, heat two thermocouples simultaneously, two thermocouples can produce electromotive force simultaneously and offset, also cannot make the magnetic valve adhesive in switching control pilot, gas circuit turns off.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510506869.8A CN105135489B (en) | 2015-08-17 | 2015-08-17 | A kind of double-source gas is ignited protection device and its method of work |
| US15/000,958 US10190772B2 (en) | 2015-08-17 | 2016-01-19 | Dual fuel ignition device and work method thereof as well as safety type dual fuel control system based thereon and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510506869.8A CN105135489B (en) | 2015-08-17 | 2015-08-17 | A kind of double-source gas is ignited protection device and its method of work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105135489A true CN105135489A (en) | 2015-12-09 |
| CN105135489B CN105135489B (en) | 2017-08-29 |
Family
ID=54720942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510506869.8A Active CN105135489B (en) | 2015-08-17 | 2015-08-17 | A kind of double-source gas is ignited protection device and its method of work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105135489B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343966A (en) * | 2017-03-24 | 2018-07-31 | 陈俊年 | Thermal couple type empty burning prevention structure of combustor |
| CN109882884A (en) * | 2019-03-08 | 2019-06-14 | 浙江富迩佳电子科技有限公司 | Anti- gas source misconnection type double-source gas control system and its control circuit |
| WO2022021510A1 (en) * | 2020-07-28 | 2022-02-03 | 长青热能科技(中山)有限公司 | Temperature measurement drive device and temperature measurement drive method, and dual-air-source valve control system |
| CN108644412B (en) * | 2018-07-19 | 2024-04-19 | 宁波丽辰电器有限公司 | Flow dividing valve and combined control system of multi-burner gas appliance comprising same |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60240916A (en) * | 1984-05-15 | 1985-11-29 | Matsushita Electric Ind Co Ltd | Gas combustion device having burner safety device |
| US4718846A (en) * | 1984-04-14 | 1988-01-12 | Rinnai Corporation | Combustion safety device for a gas heater |
| US5795145A (en) * | 1997-05-22 | 1998-08-18 | Desa International | Method and apparatus for controlling gas flow to ceramic plaque burners of differing sizes |
| CN2699153Y (en) * | 2004-02-11 | 2005-05-11 | 陈柯杰 | Backfire protecting device for gas kitchen range |
| US20060201496A1 (en) * | 2005-02-22 | 2006-09-14 | Evo, Inc. | Cooking apparatus for use with a plurality of fuels |
| US20080227045A1 (en) * | 2007-03-15 | 2008-09-18 | David Deng | Fuel selectable heating devices |
| CN101706104B (en) * | 2009-10-29 | 2012-11-28 | 南京普鲁卡姆电器有限公司 | Gas nozzle with double gas source |
| CN103615737A (en) * | 2013-11-29 | 2014-03-05 | 产平霞 | Automatic single-gas-source connector and dual-gas-source connector recognizing method and system |
| EP2772687A2 (en) * | 2013-03-02 | 2014-09-03 | David Deng | Heating assembly |
| CN204901855U (en) * | 2015-08-17 | 2015-12-23 | 浙江富迩佳电子科技有限公司 | Two air supply gass protection device that ignites |
-
2015
- 2015-08-17 CN CN201510506869.8A patent/CN105135489B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4718846A (en) * | 1984-04-14 | 1988-01-12 | Rinnai Corporation | Combustion safety device for a gas heater |
| JPS60240916A (en) * | 1984-05-15 | 1985-11-29 | Matsushita Electric Ind Co Ltd | Gas combustion device having burner safety device |
| US5795145A (en) * | 1997-05-22 | 1998-08-18 | Desa International | Method and apparatus for controlling gas flow to ceramic plaque burners of differing sizes |
| CN2699153Y (en) * | 2004-02-11 | 2005-05-11 | 陈柯杰 | Backfire protecting device for gas kitchen range |
| US20060201496A1 (en) * | 2005-02-22 | 2006-09-14 | Evo, Inc. | Cooking apparatus for use with a plurality of fuels |
| US20080227045A1 (en) * | 2007-03-15 | 2008-09-18 | David Deng | Fuel selectable heating devices |
| CN101706104B (en) * | 2009-10-29 | 2012-11-28 | 南京普鲁卡姆电器有限公司 | Gas nozzle with double gas source |
| EP2772687A2 (en) * | 2013-03-02 | 2014-09-03 | David Deng | Heating assembly |
| CN103615737A (en) * | 2013-11-29 | 2014-03-05 | 产平霞 | Automatic single-gas-source connector and dual-gas-source connector recognizing method and system |
| CN204901855U (en) * | 2015-08-17 | 2015-12-23 | 浙江富迩佳电子科技有限公司 | Two air supply gass protection device that ignites |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343966A (en) * | 2017-03-24 | 2018-07-31 | 陈俊年 | Thermal couple type empty burning prevention structure of combustor |
| CN108644412B (en) * | 2018-07-19 | 2024-04-19 | 宁波丽辰电器有限公司 | Flow dividing valve and combined control system of multi-burner gas appliance comprising same |
| CN109882884A (en) * | 2019-03-08 | 2019-06-14 | 浙江富迩佳电子科技有限公司 | Anti- gas source misconnection type double-source gas control system and its control circuit |
| US10962226B2 (en) | 2019-03-08 | 2021-03-30 | Zhejiang Fuerj Electric Science And Technology Co. Ltd. | Dual-gas source gas control system with anti-gas source misconnection and control circuit thereof |
| WO2022021510A1 (en) * | 2020-07-28 | 2022-02-03 | 长青热能科技(中山)有限公司 | Temperature measurement drive device and temperature measurement drive method, and dual-air-source valve control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105135489B (en) | 2017-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8137098B2 (en) | Multiple gas pilot burner | |
| US9388989B2 (en) | Fireplace of combusting gasified liquid fuel | |
| CN105135489A (en) | Dual-air-source fuel gas ignition protecting device and work method thereof | |
| CN105066238B (en) | Safety-type double-gas-source gas control system and control method | |
| CN204901855U (en) | Two air supply gass protection device that ignites | |
| CN103307600B (en) | Heat accumulative gas burner | |
| CA2243318A1 (en) | Improved pilot assembly and control system | |
| CN204880345U (en) | Two air supply gas control system of safe type | |
| CN204025768U (en) | For the flow control valve of burner | |
| CN104214372B (en) | Flow control valve for combustor | |
| CN102840624A (en) | Self-adaptive type multi-gas-source gas control system | |
| CN204026830U (en) | A kind of Portable gas warmer | |
| KR101876890B1 (en) | A heater using oxyhydrogen gas | |
| CN204717839U (en) | Self-adapting type gas-fired warmer with dual gas sources | |
| CN104048329B (en) | A kind of gas control valve of infrared burner | |
| CN104913373B (en) | A kind of self-adapting type gas-fired warmer with dual gas sources | |
| RU2518759C1 (en) | Oil-gas burner | |
| CN208901380U (en) | A kind of electronics flame gun | |
| CN203375454U (en) | Intelligent ignition integrated everlasting lamp | |
| CN109958794A (en) | A kind of flow control valve | |
| CN206338805U (en) | A kind of gas ignition burner | |
| US10190772B2 (en) | Dual fuel ignition device and work method thereof as well as safety type dual fuel control system based thereon and control method thereof | |
| CN202613498U (en) | Igniter for sintering raw materials | |
| CN104214817A (en) | Portable gas heater | |
| CN105402766A (en) | Gas valve control method for gas appliance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |