CN86204051U - Gas radiant-tube with promoted igniter - Google Patents
Gas radiant-tube with promoted igniter Download PDFInfo
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- CN86204051U CN86204051U CN 86204051 CN86204051U CN86204051U CN 86204051 U CN86204051 U CN 86204051U CN 86204051 CN86204051 CN 86204051 CN 86204051 U CN86204051 U CN 86204051U CN 86204051 U CN86204051 U CN 86204051U
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- electrode needle
- insulating sleeve
- igniting
- air sparger
- gas
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Abstract
The utility model relates to a gas radiant tube with an improved igniting structure, particularly combustion equipment. According to the principle of electric ignition of the natural gas and the theory that the flowing gas influences the flame core stably transmitting the flame, the utility model improves that an anode device of an igniting electrode of the traditional radiant tube aims at the surface of a nozzle opening or an igniting element on the surface so as to ignite. The utility model provides a new gas radiant tube which can freely flex in the space of an ignition ring, can be adjusted in 360 DEG, and can select a plurality of igniting positions. The utility model has the advantages of convenient installation, high reliability, agile and convenient performance and ignition energy saving.
Description
The utility model relates to combustion apparatus, particularly to existing improvement with gas fired radiant tubes of electric ignition structure.Gas fired radiant tubes is made up of gas nozzle, ignitor, combustion gas and air inlet assembly and heating tube usually.Combustion gas and air by the ignitor discharge, produce long flame and high-temperature flue gas after the nozzle place is mixed, in order to add the heat radiation tube inner and outer pipes, release heat outside managing.
In order to reach above-mentioned usefulness, the gas fired radiant tubes of traditional spark ignition, its ignition part mainly use bar-shaped ignitor (positive pole) and gas nozzle outer surface (negative pole) to constitute.During energising, certain a bit produces electric spark to ignitor facing on the jet hole outer surface, specifically is that ignitor faces toward primary air.Because speed is fast during the mixed airflow jetting nozzle of air and combustion gas, tend to cause the flame nuclear quenching of lighting, in order to overcome the influence of air-flow turbulent fluctuation degree, must determine a certain optimum igniting position at spout, adapting to the requirement to minimum ignition energy in radiant tube of combustion gas one air Mixture, and note improving ignition energy.Said method is quite high to igniting pin requirement on machining accuracy, and the leader of igniting pin must be processed straightly, and is parallel with the radiant tube trunnion axis.Needle point towards, position, installation machining accuracy fixing, associated components all requires very highly, brought difficulty to manufacturing, however also unavoidable flame nuclear quencher.For the reliability that guarantees to light a fire, generally adopt regnition at present, promptly open little fire earlier, open main fire again.Produce the similar gas fired radiant tubes of the LOI company of specialized company of stove, burner as West Germany.
In order to overcome the defective of radiant tube igniting, guarantee the reliability of igniting, people also attempt to improve to the spark ignition structure, and it has improved traditional ignition structure as Deutsche Bundespatent (DT2336693).Negative pole is made up of another hardware near the nozzle outer rim, and positive pole is fixed on the air distribution plate.But it is more high to the requirement of igniting pin machining accuracy.In addition, because the position of its igniting pin is relatively-stationary, can't select ignition location free in " some fire ring " space, neatly, thereby the reliability of igniting also is subjected to certain influence.
According to natural gas electric ignition mechanism and flowing gas flame nuclear is stablized the theory of the influence of propagating, during electrode discharge, nascent little breakdown current and then ionization combustion gas molecule form and have amplified the big electric current of hundred times, when electric energy surpasses minimum ignition energy, the part combustion gas is lighted, form flame nuclear around the spark, flame is examined to the unreacted fuel gas propagating flame.
Come from the combustion gas (or combustion gas and Air mixing gas) of radiant tube spout, form a uneven velocity field and a concentration field at the delivery nozzle place, the gas that flows has a significant impact stable propagation of flame nuclear to setting up flame nuclear, because it is very fast to come from the flowing gas speed of spout, flame is endorsed and can be blown out quickly, and near the perisporium of nozzle, because friction forms a detention layer.So around nozzle, there is big " some fire ring " space of an igniting reliability.Settle air sparger at spout after measured, should " some fire ring " space just at the madial wall of air sparger.
The purpose of this utility model, according to above-mentioned principle, improve traditional radiant tube spark ignition apparatus structure and ignition location, the pin (electrode needle) of will lighting a fire points to the air sparger inwall igniting on the jet hole, and igniting pin (electrode needle) can be in " some fire ring " space, and retractable on length also can be done 360 ° rotation, regulate and select ignition location, and can be fixed on a certain correct position as required.Thereby overcome above-mentioned igniting poor reliability, processing difficulties, the defective of regnition operation sequence complexity.Provide a kind of simple to operate, but ignition performance good, the easy flexible modulation of processing and the bigger improved gas fired radiant tubes of control band.
Structure of the present utility model is as follows:
The radiant tube that the utility model provides comprises a heating tube of being made up of interior pipe and outer tube, and one by the fuel gas jet pipe, fuel gas inlet, the air intake assembly that air intake duct, air inlet hole are formed.The air and the combustion gas that enter by air intake pipe and fuel gas jet pipe spray into tube inlet in the radiant tube after the nozzle place is mixed, an air sparger is arranged in the middle of nozzle and heating tube, and air sparger links to each other with pipe in the radiant tube.At the radiant tube firing tip one end plate and flame-observing hole are arranged.The waste gas of discharging from interior pipe rear end is discharged by the outlet port on the outer tube.The ignitor device is fixed on the air sparger, wherein electrode needle (igniting pin) is passed insulating sleeve, and pass the air-distribution wall and stretch in the air sparger, the top of electrode needle (igniting pin) curves certain angle, madial wall facing to air sparger, thereby when energising, igniting pin (positive electrode) can be emitted electric spark facing to air sparger madial wall (negative electrode).The anodal device of ignitor is fixed on the air-distribution wall by locking nut.When point of adjustment thermoelectricity die opening and ignition location, unclamp hold-down nut, locking nut, can make igniting pin (electrode needle) do to transfer on the length or do 360 ° of rotations around its fixed axis, thereby guarantee to have more igniting selected element, enlarge search and selection face, and in a single day choose the most suitable a certain ignition location, need be fixing for a long time, make the certain electrode spacing of the fixing maintenance of ignition location by nut.
Electrode needle (igniting pin) faces toward the air sparger inwall in " some fire ring " space, guaranteed that igniting is not subjected to the influence of gas flow, electrode needle (igniting pin) on length adjusting and do 360 ° of rotations around fixed axis, guaranteed to seek flexibly and easily suitable ignition location.Because optimum igniting point is not unique, thereby is convenient to select ignition location, save ignition energy, also reduced the requirement that processing is installed simultaneously.
The also available ion detector (flame detector) that is installed on the nozzle axis of flame-observing hole on the radiant tube firing tip comes for device.
Description of drawings:
Fig. 1 is a general assembly structural representation of the present utility model.
Fig. 2 is the structure chart of the anodal device of the utility model nozzle, air sparger and ignitor.
Fig. 3 is the utility model air sparger schematic diagram.
Fig. 4 is that the utility model is scalable, the cutaway view of the anodal device of ignitor of rotation.
As shown in Figure 1 and Figure 2, the utility model comprises a heating tube of being made up of interior pipe (6) outer tube (5); One air intake assembly of forming by the air inlet hole (15) on fuel gas jet pipe (9) air intake duct (8) and the air sparger (7); The air and the combustion gas that enter by air intake duct (8) fuel gas inlet (10) spray to pipe (6) porch in the radiant tube after nozzle (14) is located to mix.One air sparger (7) is arranged between nozzle (14) and heating tube, and air sparger (7) links to each other with pipe (6) in the heating tube.At the radiant tube firing tip one end plate (11) and flame-observing hole (12) are arranged, clamp nut (13) is flame-observing hole (12) fixedly.Waste gas is discharged from interior pipe (6) rear end, discharges by the outlet port (4) on the outer tube (5).The anodal device of ignitor (3) is fixed on air sparger (7) wall.As shown in Figure 2, the anodal device of this ignitor (3) comprises electrode needle (16), insulating sleeve (18), locking nut (19), hold-down nut (17) and high-voltage conducting wires (2); High-voltage conducting wires (2) is connected on the rear end of electrode needle (16), and fixing by the insulation plunger (1) that is contained on the end plate (11), connects external power supply; Electrode needle (16) is passed insulating sleeve (18) and is passed air sparger (7); Locking nut (19) is fixed on electrode needle (16) and insulating sleeve (18) on the wall of air sparger (7), and electrode needle (16) becomes tight fit with insulating sleeve (18); Hold-down nut (17) compresses high-voltage conducting wires (2) in electrode needle (16) rear end, and insulating sleeve (18).As Fig. 3, pass curved the having a certain degree in electrode needle (16) top of air sparger (7), point to air sparger (7) madial wall, during energising, send spark, igniting.Unclamp hold-down nut (17) and locking nut (19), can also can make electrode needle (16) do 360 ° of rotations, so that on air sparger (7) face, select ignition location as required in length adjusted electrode needle (16) around its central shaft.
Most preferred embodiment:
As shown in Figure 4, in order to guarantee that the electrode needle (16) in the anodal device of ignitor (3) can be in the reliability of length and circumference adjusted, insulating sleeve (18) has internal and external threads, electrode needle also has screw thread on (16), the same electrode needle of insulating sleeve (18) (16) is with being threaded, the same locking nut of insulating sleeve (18) (19) unclamps hold-down nut (17) also by being threaded, the length of turn electrode needle (16) is adjustable moving electrode pin (16).For adjusted electrode needle (16) is met the requirements on angle, can unclamp locking nut (19) again, make electrode needle (16) do 360 ° of rotations, select the optimum igniting position.
Claims (3)
1, a kind of gas fired radiant tubes with improvement ignition structure, relate to combustion apparatus, the gas fired radiant tubes that particularly has the spark ignition structure, it is made up of heating tube, air intake assembly, nozzle [14], air sparger [7], end plate [11], flame-observing hole [12] and the extremely anodal device of some thermoelectricitys [3].It is characterized in that the anodal device [3] of described ignitor, comprise an electrode needle [16], be connected to high-voltage conducting wires [2] on the electrode needle [16], electrode needle [16] is passed insulating sleeve [18] and air sparger [7], electrode needle [16] and insulating sleeve [18] are fixed on the wall of air sparger [7] by locking nut [19], and hold-down nut [17] compresses high-voltage conducting wires [2] and insulating sleeve [18] in electrode needle [16] rear end; The electrode needle [16] of passing air sparger [7] wall curves certain angle, facing to air sparger [7] madial wall.
2, the gas fired radiant tubes with improvement ignition structure as claimed in claim 1, it is characterized in that the anodal device (3) of described ignitor, wherein insulating sleeve (18) has external screw thread, electrode needle (16) is inserted the tight fit that the same insulating sleeve of insulating sleeve (18) (18) becomes adjustable length, and the same locking nut of insulating sleeve (18) (19) becomes being threaded of adjustable joint electrode needle (16) orientation.
3, the gas fired radiant tubes with improvement ignition structure as claimed in claim 1, it is characterized in that the anodal device (3) of described ignitor, wherein be threaded on the electrode needle (16), insulating sleeve (18) has internal and external threads, that the same insulating sleeve of electrode needle (16) (16) becomes is rotatable, being threaded of collapsing length, the same locking nut of insulating sleeve (18) (19) but become being threaded of free adjustment electrode needle (16) orientation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86204051 CN86204051U (en) | 1986-09-01 | 1986-09-01 | Gas radiant-tube with promoted igniter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86204051 CN86204051U (en) | 1986-09-01 | 1986-09-01 | Gas radiant-tube with promoted igniter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86204051U true CN86204051U (en) | 1987-07-29 |
Family
ID=4807209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86204051 Withdrawn CN86204051U (en) | 1986-09-01 | 1986-09-01 | Gas radiant-tube with promoted igniter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86204051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705050A (en) * | 2016-12-08 | 2017-05-24 | 威海航泰环保设备有限公司 | Integral combustion angle-adjustable automatic ignition device |
| CN108180478A (en) * | 2017-12-28 | 2018-06-19 | 武汉都市环保工程技术股份有限公司 | Gas burner and coal gas burner |
-
1986
- 1986-09-01 CN CN 86204051 patent/CN86204051U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705050A (en) * | 2016-12-08 | 2017-05-24 | 威海航泰环保设备有限公司 | Integral combustion angle-adjustable automatic ignition device |
| CN108180478A (en) * | 2017-12-28 | 2018-06-19 | 武汉都市环保工程技术股份有限公司 | Gas burner and coal gas burner |
| CN108180478B (en) * | 2017-12-28 | 2019-11-19 | 中冶南方都市环保工程技术股份有限公司 | Gas burner and coal gas burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |