CN110006059B - Micro-gas combined pilot burner ignition system and method - Google Patents
Micro-gas combined pilot burner ignition system and method Download PDFInfo
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- CN110006059B CN110006059B CN201810007992.9A CN201810007992A CN110006059B CN 110006059 B CN110006059 B CN 110006059B CN 201810007992 A CN201810007992 A CN 201810007992A CN 110006059 B CN110006059 B CN 110006059B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 526
- 239000002737 fuel gas Substances 0.000 claims abstract description 218
- 238000002485 combustion reaction Methods 0.000 claims abstract description 89
- 230000001105 regulatory effect Effects 0.000 claims description 42
- 230000001276 controlling effect Effects 0.000 claims description 9
- 231100000331 toxic Toxicity 0.000 claims description 9
- 230000002588 toxic effect Effects 0.000 claims description 9
- 231100001261 hazardous Toxicity 0.000 claims 8
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000005923 long-lasting effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000010849 combustible waste Substances 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
Abstract
The invention discloses a micro-gas combined pilot lamp ignition system and a method, wherein the micro-gas combined pilot lamp ignition system comprises: a light with a long-lasting light; the high-pressure gas supply pipeline is communicated with the fuel gas pipeline through the high-pressure gas nozzle; the low-pressure gas supply pipeline is communicated with the fuel gas pipeline through a low-pressure gas nozzle; one end of the compressed air supply pipeline is communicated with the harmful gas supply pipeline, one end of the harmful gas supply pipeline is communicated with the combined combustion cavity, and the other end of the harmful gas supply pipeline is communicated with the interface of the harmful gas pipeline; the ground premixed fuel gas pipeline is arranged in the micro-gas pilot burner and is communicated with the ground fuel gas source interface. The micro-gas combined pilot burner ignition system can save and reduce energy consumption and operation cost.
Description
Technical Field
The invention belongs to the field of petrochemical industry, and particularly relates to a micro-gas combined pilot burner ignition system and a method.
Background
A large amount of combustible gas, even toxic and harmful gas, is generated in the refining process of petrochemical industry, coal chemical industry and the like; the waste gas is combusted by a ground torch burner or an overhead torch burner, a heating furnace burner, a boiler burner, an incinerator and the like, and a plurality of sets of torch burners are required to be arranged under different conditions due to the large amount of the discharged waste gas, so that a plurality of pilot lamps are required to be designed. At present, the fuel quantity actually consumed by a single pilot burner generally reaches 5.0-8.0 Nm 3/h, and some pilot burner even some pilot burner exceeds 10.0Nm 3/h; natural gas and liquefied gas are used as fuel for the pilot lamp, so that the energy consumption is high, the running cost is high, and the like.
Therefore, there is a need to develop a micro-gas combined pilot burner ignition system and method that can save energy consumption and running cost.
Disclosure of Invention
The invention provides a micro-gas combined pilot burner ignition system and a method, which solve the problems that the existing pilot burner ignition system only adopts natural gas and liquefied gas as fuel and has high energy consumption.
To achieve the above object, according to an aspect of the present invention, there is provided a micro-gas combined pilot burner ignition system comprising:
The micro-gas pilot burner comprises a compressed air pipeline, a fuel gas pipeline, a combined combustion cavity, a combustible gas high-low pressure combustion nozzle, a high-pressure gas nozzle, a low-pressure gas nozzle and a venturi air inlet adjusting device, wherein one end of the combustible gas high-low pressure combustion nozzle is communicated with the combined combustion cavity, one end of the fuel gas pipeline is communicated with the combustible gas high-low pressure combustion nozzle, the other end of the fuel gas pipeline is communicated with the high-pressure gas nozzle and the low-pressure gas nozzle, the venturi air inlet adjusting device is arranged at the joint of the high-pressure gas nozzle and the fuel gas pipeline and the joint of the low-pressure gas nozzle and the fuel gas pipeline, and one end of the compressed air pipeline is communicated with the combined combustion cavity;
The ignition end of the ignition click rod is arranged in the fuel gas pipeline and/or the ground premixed fuel gas pipeline, and the ignition click rod is used for igniting the fuel gas in the fuel gas pipeline and the mixed fuel gas in the ground premixed fuel gas pipeline;
the high-pressure gas supply pipeline is communicated with the fuel gas pipeline through a high-pressure gas nozzle;
A low pressure gas supply conduit that communicates to the fuel gas conduit through a low pressure gas nozzle;
the compressed air supply pipeline is communicated with the compressed air pipeline interface at one end and the compressed air pipeline at the other end;
one end of the harmful gas supply pipeline is communicated with the combined combustion cavity, and the other end of the harmful gas supply pipeline is communicated with the interface of the harmful gas pipeline;
The ground premixed fuel gas pipeline is arranged in the micro-gas pilot lamp and is communicated with the ground fuel gas source interface.
Preferably, the venturi air inlet adjusting device is an air inlet inverted V-shaped adjuster, and the air inlet inverted V-shaped adjuster comprises: the device comprises an upper inverted V-shaped adjusting device and a lower inverted V-shaped adjusting device, wherein the upper inverted V-shaped adjusting device is arranged at the middle lower part of a fuel gas pipeline of the micro-gas pilot burner, the lower inverted V-shaped adjusting device is arranged at the lower part of the fuel gas pipeline of the micro-gas pilot burner, an inverted V-shaped air inlet or an inverted W-shaped air inlet is formed between the upper inverted V-shaped adjusting device and the lower inverted V-shaped adjusting device, and the high-pressure gas nozzle and the low-pressure gas nozzle penetrate through the Venturi air inlet adjusting device to be communicated with the fuel gas pipeline.
Preferably, the venturi air inlet adjusting device is a porous plate baffle adjusting device, the porous plate baffle adjusting device comprises a shell and a plurality of porous baffles, the porous baffles are arranged in the shell, the shell is sleeved at one end of the fuel gas pipeline, and the high-pressure gas nozzle and the low-pressure gas nozzle penetrate through the porous baffles and are communicated with the fuel gas pipeline.
Preferably, the fuel gas pipeline and the ground premixed fuel gas pipeline are Y-shaped mixing pipes, the high-pressure fuel gas nozzle and the low-pressure fuel gas nozzle are coaxially arranged at one end of the fuel gas pipeline, and an ignition click rod is arranged in the Y-shaped mixing pipes; the fire click rod is installed in the fuel gas pipeline and/or the ground premix fuel gas pipeline.
Preferably, the micro-gas pilot burner further comprises a venturi device, and the venturi device is arranged between the fuel gas pipeline and the high-pressure gas nozzle and the low-pressure gas nozzle.
Preferably, the harmful gas pipeline is used for being connected to a harmful gas source, and at least one of a harmful gas shut-off valve, a harmful gas flowmeter, a harmful gas regulating valve, a harmful gas flame arrester and a harmful gas pressure transmitter is arranged on the harmful gas pipeline.
Preferably, the compressed air supply pipeline is used for being connected to a compressed air pipeline interface, and at least one of a compressed air cut-off valve, a compressed air flowmeter, a compressed air regulating valve and a compressed air transmitter is arranged on the compressed air supply pipeline;
The high-pressure gas supply pipeline is used for being connected to the first fuel gas source interface, and is provided with at least one of a high-pressure gas cut-off valve, a high-pressure gas flowmeter, a high-pressure gas pressure transmitter, a high-pressure gas regulating valve and a high-pressure gas flame arrester;
the low-pressure gas supply pipeline is used for being connected to the second fuel gas source interface, and at least one of a low-pressure gas cut-off valve, a low-pressure gas flowmeter, a low-pressure gas regulating valve, a low-pressure gas flame arrester and a low-pressure gas pressure transmitter is arranged on the low-pressure gas supply pipeline.
Preferably, at least one of a ground premix fuel gas cut-off valve, a ground premix fuel gas flowmeter and a ground premix fuel gas transmitter is arranged on the ground premix fuel gas pipeline.
Preferably, the ignition control device further comprises a control unit, wherein the control unit is used for controlling the opening and closing of the high-pressure gas supply pipeline, the low-pressure gas supply pipeline and the compressed air supply pipeline and controlling the ignition end fire of the ignition click rod to be opened and closed.
According to another aspect of the present invention, there is provided an ignition method of a micro-gas combined pilot burner ignition system, comprising:
the high-pressure gas enters the high-pressure gas nozzle through a high-pressure gas supply pipeline and is conveyed to the combustible gas high-pressure low-pressure combustion nozzle through a fuel gas pipeline;
the ignition click rod ignites the high-pressure gas;
the low-pressure gas enters the low-pressure gas nozzle through a low-pressure gas supply pipeline and is conveyed to the combustible gas high-pressure low-pressure combustion nozzle through a fuel gas pipeline;
The toxic and harmful gas enters the combined combustion cavity through a harmful gas supply pipeline;
igniting low-pressure gas and toxic and harmful gas in the combined combustion chamber by the combusted high-pressure gas;
the compressed air is conveyed to the combustible gas high-pressure and low-pressure combustion nozzle through the compressed air supply pipeline and the compressed air pipeline.
The invention has the beneficial effects that: when the petrochemical device is used for production, the arrangement of the micro-gas pilot burner, the high-pressure gas supply pipeline, the low-pressure gas supply pipeline and the compressed air supply pipeline can be used for generating combustible exhaust gas under various conditions, and the special design is carried out on different gases by distinguishing the components of the exhaust gas; when the high-pressure gas and high-heat value combustible gas combustion system ignites for stable combustion, the low-pressure gas and low-heat value combustible gas is ignited, meanwhile, the compressed air system is added, the burnout rate of the combustible gas is improved, and the wind resistance and the rain resistance of the flame are improved; through PLC automatic control, provide multiple ignition mode and multiple fuel air supply, ensure ignition reliability and ignition safety. The influence of industrial combustible gas unorganized emission combustion on the environment is reduced. The purpose of saving energy and reducing cost is achieved when the chemical device is operated by using natural gas as a pilot burner gas source for a long time.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular descriptions of exemplary embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the invention.
Fig. 1 shows a schematic diagram of a micro-gas pilot lamp ignition system according to one embodiment of the invention.
Fig. 2 shows a schematic diagram of a micro-gas pilot lamp according to one embodiment of the invention.
Fig. 3 shows a cross-sectional view of a micro-gas pilot lamp according to one embodiment of the invention.
Fig. 4 shows a partially enlarged schematic illustration in accordance with an embodiment of the invention.
Fig. 5 shows a schematic diagram of a micro-gas pilot lamp ignition system according to another embodiment of the invention.
Fig. 6 shows a schematic diagram of a micro-gas pilot lamp according to another embodiment of the invention.
Fig. 7 shows a cross-sectional view of a micro-gas pilot lamp according to another embodiment of the invention.
Fig. 8 shows a partially enlarged schematic illustration according to another embodiment of the invention.
Description of the reference numerals
1. A light with a long-lasting light; 7. a power supply control cabinet; 8. a PLC control cabinet; 9. an igniter; 10. an ignition rod electrode; 11. a high-pressure gas cut-off valve; 12. a high pressure gas flow meter; 13. a high pressure gas pressure transmitter; 15. a high-pressure gas regulating valve; 16. a high pressure gas flame arrester; 17. a low-pressure gas cut-off valve; 18. a low pressure gas flow meter; 19. a low pressure gas regulating valve; 20. a low pressure gas flame arrester; 21. a low pressure gas pressure transmitter; 22. a compressed air shut-off valve; 23. a compressed air flowmeter; 25. a compressed air regulating valve; 26. a compressed air transmitter; 27. a ground premix fuel gas shut-off valve; 28. a ground premix fuel gas flow meter; 30. a ground premix fuel gas transmitter; 31. a harmful gas shut-off valve; 32. a harmful gas flowmeter; 33. a harmful gas regulating valve; 35. a harmful gas flame arrester; 36. a harmful gas pressure transmitter; 50. a combined combustion chamber; 51. a combustible gas high-pressure and low-pressure gas nozzle; 52. a thermocouple; 53. a harmful gas nozzle; 55. a compressed air nozzle; 56 floor premix fuel gas pipe nozzles; 57. a fuel gas pipe; 58. a venturi device; 59. an upward inverted V-shaped adjusting device; 60. an inverted V-shaped air inlet; 61. a downward inverted V-shaped adjusting device; 62. an inner air outlet; 65. The air inlet is provided with an inverted V-shaped regulator; 66. y-shaped mixing pipe of ground premix fuel gas pipe; 71. baffle plate type adjusting device of the porous plate; 72. a housing; 73. a plurality of porous baffles; 80. a high pressure gas nozzle; 81. a low pressure gas nozzle; 82. a compressed air conduit; 83. a ground premix fuel gas pipe; 85. a harmful gas pipe; 86. a thermocouple protection tube; 90. a high pressure gas supply line; 91. a low pressure gas supply conduit; 92. a compressed air supply line; 93. a ground premix fuel gas conduit; 95. a harmful gas pipe.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention relates to a micro-gas combined pilot burner ignition system, which comprises:
The micro-gas pilot burner comprises a compressed air pipeline, a fuel gas pipeline, a combined combustion cavity, a combustible gas high-pressure low-pressure combustion nozzle, a high-pressure gas nozzle, a low-pressure gas nozzle and a Venturi air inlet adjusting device, wherein one end of the combustible gas high-pressure low-pressure combustion nozzle is communicated with the combined combustion cavity, one end of the fuel gas pipeline is communicated with the combustible gas high-pressure low-pressure combustion nozzle, the other end of the fuel gas pipeline is communicated with the high-pressure gas nozzle and the low-pressure gas nozzle, the Venturi air inlet adjusting device is arranged at the joint of the high-pressure gas nozzle and the fuel gas pipeline and the joint of the low-pressure gas nozzle and the fuel gas pipeline, and one end of the compressed air pipeline is communicated with the combined combustion cavity;
The ignition end of the ignition click rod is arranged in the fuel gas pipeline and/or the ground premix fuel gas pipeline, and the ignition click rod is used for igniting the fuel gas in the fuel gas pipeline and the mixed fuel gas in the ground premix fuel gas pipeline;
The high-pressure gas supply pipeline is communicated with the fuel gas pipeline through the high-pressure gas nozzle;
The low-pressure gas supply pipeline is communicated with the fuel gas pipeline through a low-pressure gas nozzle;
One end of the compressed air supply pipeline is communicated with the compressed air pipeline interface, and the other end of the compressed air supply pipeline is communicated with the compressed air pipeline;
One end of the harmful gas supply pipeline is communicated with the combined combustion cavity, and the other end of the harmful gas supply pipeline is communicated with the interface of the harmful gas pipeline;
the ground premixed fuel gas pipeline is arranged in the micro-gas pilot burner and is communicated with the ground fuel gas source interface.
Specifically, the ability of the flame to resist wind and rain is increased by the arrangement of the compressed air supply pipeline.
Specifically, when the petrochemical device is used for production through the arrangement of the micro-gas pilot burner, the high-pressure gas supply pipeline, the low-pressure gas supply pipeline and the compressed air supply pipeline, combustible exhaust gas with various conditions is generated, and different gases are specially designed by distinguishing the exhaust gas components; when the high-pressure gas and high-heat value combustible gas combustion system ignites and burns stably, the low-pressure gas and low-heat value combustible gas is ignited, meanwhile, the compressed air system is added, the burnout rate of the combustible gas is improved, the wind resistance and rain resistance of the flame are improved, and the combustible waste gas of a chemical device is effectively utilized; the influence of industrial combustible gas unorganized emission combustion on the environment is reduced. When the chemical device is operated by long-term natural gas as a pilot burner gas source, the purposes of saving energy and greatly reducing cost are achieved.
Specifically, the micro-gas pilot burner ignition system is suitable for various industrial ignition and long-term combustion systems, such as a boiler burner, a ground torch burner, a heating furnace burner or an overhead torch burner, and the like.
Specifically, the high-pressure gas enters the high-pressure gas nozzle through a high-pressure gas supply pipeline and is conveyed to the combustible gas high-pressure low-pressure combustion nozzle through a fuel gas pipeline;
the ignition click rod ignites the high-pressure gas;
the low-pressure gas enters the low-pressure gas nozzle through a low-pressure gas supply pipeline and is conveyed to the combustible gas high-pressure low-pressure combustion nozzle through a fuel gas pipeline;
The toxic and harmful gas enters the combined combustion cavity through a harmful gas supply pipeline;
igniting low-pressure gas and toxic and harmful gas in the combined combustion chamber by the combusted high-pressure gas;
the compressed air is conveyed to the combustible gas high-pressure and low-pressure combustion nozzle through the compressed air supply pipeline and the compressed air pipeline.
Specifically, by communicating the ground premix fuel gas conduit with a fuel gas source, a mixture of fuel gas and air is delivered into the combined combustion chamber for ignition via the ignition click rod. Instead of the ground ignition in the traditional mode, the backfire phenomenon is avoided.
More preferably, the combined combustion chamber forms an angle of 0 to 90 degrees with the horizontal plane.
More preferably, the compressed air pipeline is arranged in the middle of the shell of the micro-gas pilot lamp.
Specifically, the middle part of the compressed air through the micro-gas pilot burner supplements oxygen for the combustible gas, so that the combustion of the combustible gas can be more fully and stably realized.
More preferably, the ignition click rod comprises an igniter and an ignition rod electrode, wherein the ignition end of the ignition rod electrode is arranged in the fuel gas pipeline, the ignition rod electrode is connected with the igniter through a cable, and is connected with the igniter through a PLC control cabinet in a communication manner, so that ignition is automatically controlled, and combustible gas in the fuel gas pipeline and/or the ground premixed fuel gas pipeline is ignited.
More preferably, the micro-gas pilot lamp further comprises a thermocouple and a thermocouple protection tube, wherein the thermocouple is arranged in the micro-gas pilot lamp, and the thermocouple protection tube is sleeved on the thermocouple.
More preferably, the high-pressure and low-pressure fuel gas combustion nozzle is arranged in the combined combustion cavity and communicated with one end of the fuel gas pipeline; the compressed air nozzle is arranged in the combined combustion chamber and is communicated with one end of the compressed air pipeline.
As the preferred scheme, venturi air inlet adjusting device is air intake reverse V-arrangement regulator, and air intake reverse V-arrangement regulator includes: the device comprises an upper inverted V-shaped adjusting device and a lower inverted V-shaped adjusting device, wherein the upper inverted V-shaped adjusting device is arranged at the middle lower part of a fuel gas pipeline of a micro-gas pilot burner, the lower inverted V-shaped adjusting device is arranged at the lower part of the fuel gas pipeline of the micro-gas pilot burner, an inverted V-shaped air inlet or an inverted W-shaped air inlet is formed between the upper inverted V-shaped adjusting device and the lower inverted V-shaped adjusting device, and a high-pressure gas nozzle and a low-pressure gas nozzle are communicated with the fuel gas pipeline through the Venturi air inlet adjusting device.
Specifically, the distance between the upper inverted V-shaped adjusting device and the lower inverted V-shaped adjusting device is adjusted, so that the size of the inverted V-shaped air inlet is adjusted, the air inlet amount is controlled, and the combustion tempering phenomenon of the micro-gas pilot lamp is effectively prevented.
As a preferred scheme, the Venturi air inlet adjusting device is a porous plate baffle adjusting device, the porous plate baffle adjusting device comprises a shell and a plurality of porous baffles, the porous baffles are arranged in the shell, the shell is sleeved at one end of a fuel gas pipeline, and a high-pressure gas nozzle and a low-pressure gas nozzle penetrate through the porous baffles and are communicated with the fuel gas pipeline.
Specifically, the air inlet amount is controlled through the distance among the porous baffle plates, so that the combustion backfire phenomenon of the micro-gas pilot burner is effectively prevented.
As a preferable scheme, the fuel gas pipeline and the ground premixed fuel gas pipeline are Y-shaped mixing pipes, the high-pressure fuel gas nozzle and the low-pressure fuel gas nozzle are coaxially arranged at one end of the fuel gas pipeline, and an ignition click rod is arranged in the Y-shaped mixing pipes; the fire click rod is installed in the fuel gas pipeline and/or the ground premixed fuel gas pipeline.
Specifically, the fuel gas pipeline can be designed in a Y shape or an arc shape, and the angle between the fuel gas pipeline and the vertically installed ignition click rod is 0-90 degrees.
More preferably, the device further comprises a thermocouple protection tube, wherein the thermocouple protection tube is arranged in the shell,
Specifically, the low-pressure gas nozzle 5 is installed at an angle of 0 to 85 degrees with respect to the horizontal plane.
Specifically, the included angle between the combustible gas high-pressure and low-pressure combustion nozzle and the horizontal plane is 0-85 degrees, and the included angle between the combustible gas high-pressure and low-pressure combustion nozzle and the vertical plane is 0-80 degrees.
As the preferable scheme, the micro-gas pilot burner also comprises a venturi device, and the venturi device is arranged between the fuel gas pipeline and the high-pressure gas nozzle and the low-pressure gas nozzle.
Preferably, the harmful gas pipeline is used for being connected to a harmful gas source, and at least one of a harmful gas cut-off valve, a harmful gas flowmeter, a harmful gas regulating valve, a harmful gas flame arrester and a harmful gas pressure transmitter is arranged on the harmful gas pipeline.
More preferably, the micro-gas pilot lamp further comprises a harmful gas pipe, and the harmful gas pipe is arranged in the micro-gas pilot lamp.
More preferably, the combined combustion chamber is internally provided with a harmful gas nozzle, a ground premixed fuel gas pipe nozzle, a combustible gas high-pressure and low-pressure combustion nozzle and a thermocouple.
As a preferable scheme, the compressed air supply pipeline is used for being connected to a compressed air pipeline interface, and at least one of a compressed air cut-off valve, a compressed air flowmeter, a compressed air regulating valve and a compressed air transmitter is arranged on the compressed air supply pipeline;
The high-pressure gas supply pipeline is used for being connected to the first fuel gas source interface, and is provided with at least one of a high-pressure gas cut-off valve, a high-pressure gas flowmeter, a high-pressure gas pressure transmitter, a high-pressure gas regulating valve and a high-pressure gas flame arrester;
the low-pressure gas supply pipeline is used for being connected to the second fuel gas source interface, and at least one of a low-pressure gas cut-off valve, a low-pressure gas flowmeter, a low-pressure gas regulating valve, a low-pressure gas flame arrester and a low-pressure gas pressure transmitter is arranged on the low-pressure gas supply pipeline.
Specifically, the compressed air supply pipeline interface is sequentially connected with a compressed air regulating valve and a compressed air cut-off valve; a compressed air pressure transmitter is arranged between the compressed air supply pipeline interface and the compressed air regulating valve; a compressed air flowmeter is arranged between the compressed air regulating valve and the compressed air cut-off valve; the other end of the compressed air cut-off valve is connected with a compressed air supply pipe, and the compressed air supply pipe is connected with a compressed air pipeline through a compressed air combustible gas high-pressure and low-pressure combustion nozzle.
Specifically, the high-pressure gas supply pipeline interface is sequentially connected with a high-pressure gas flame arrester and a high-pressure gas cut-off valve of a high-pressure gas regulating valve; a high-pressure gas pressure transmitter is arranged between the high-pressure gas supply pipeline interface and the high-pressure gas flame arrester; a high-pressure gas flowmeter is arranged between the high-pressure gas regulating valve and the high-pressure gas cut-off valve; the other end of the high-pressure gas cut-off valve is connected with a high-pressure gas nozzle;
Specifically, the low-pressure gas supply pipeline interface is sequentially connected with a low-pressure gas flame arrester, a low-pressure gas regulating valve and a low-pressure gas cut-off valve; a low-pressure gas pressure transmitter is arranged between the low-pressure gas supply pipeline interface and the low-pressure gas flame arrester; a low-pressure gas flowmeter is arranged between the low-pressure gas regulating valve and the low-pressure gas cut-off valve; the other end of the low-pressure gas cut-off valve is connected with a low-pressure gas nozzle.
The ground premix fuel gas pipeline is used for being connected to a ground fuel gas source, and at least one of a ground premix fuel gas cut-off valve, a ground premix fuel gas flowmeter and a ground premix fuel gas transmitter is arranged on the ground premix fuel gas pipeline.
More preferably, the micro-gas pilot burner further comprises a ground premix fuel gas pipe, and the ground premix fuel gas pipe is arranged in the micro-gas pilot burner.
More preferably, a ground premix fuel gas pipe nozzle is arranged in the combined combustion chamber and is communicated with the ground premix fuel gas pipe.
Specifically, the ground premix fuel gas supply pipeline interface is sequentially connected with a ground premix fuel gas cut-off valve, and a ground premix fuel gas flowmeter is arranged between the ground premix fuel gas supply pipeline interface and the ground premix fuel gas cut-off valve; the other end of the ground premix fuel gas cut-off valve is connected with a ground premix fuel gas pipe, and the ground premix fuel gas pipe is connected with a ground premix fuel gas nozzle.
Specifically, the interface of the harmful gas supply pipeline is sequentially connected with a harmful gas flame arrester, the other end of the harmful gas flame arrester is connected with a harmful gas regulating valve, and a harmful gas pressure transmitter is arranged between the harmful gas flame arrester and the harmful gas regulating valve; the other end of the harmful gas cut-off valve is connected with the harmful gas cut-off valve; a harmful gas flowmeter is arranged on the harmful gas shut-off valve and the harmful gas regulating valve; the other end of the harmful gas shutoff valve is connected with a harmful gas pipe, and the other end of the harmful gas pipe is communicated to the top of the micro-gas pilot burner through a harmful gas nozzle.
Specifically, the top of the combined combustion chamber is a combustion chamber, and the low-pressure gas supply pipeline, the compressed air supply pipeline and the harmful gas pipeline are communicated with the combustion chamber.
As a preferred scheme, the ignition control device further comprises a control unit, wherein the control unit is used for controlling the opening and closing of the high-pressure gas supply pipeline, the low-pressure gas supply pipeline and the compressed air supply pipeline and controlling the opening and closing of the ignition end fire of the ignition click rod.
More preferably, the control unit may be a PLC control cabinet.
The invention relates to a micro-gas combined pilot burner ignition method, which comprises the following steps:
the high-pressure gas enters the high-pressure gas nozzle through a high-pressure gas supply pipeline and is conveyed to the combustible gas high-pressure low-pressure combustion nozzle through a fuel gas pipeline;
the ignition click rod ignites the high-pressure gas;
the low-pressure gas enters the low-pressure gas nozzle through a low-pressure gas supply pipeline and is conveyed to the combustible gas high-pressure low-pressure combustion nozzle through a fuel gas pipeline;
The toxic and harmful gas enters the combined combustion cavity through a harmful gas supply pipeline;
igniting low-pressure gas and toxic and harmful gas in the combined combustion chamber by the combusted high-pressure gas;
the compressed air is conveyed to the combustible gas high-pressure and low-pressure combustion nozzle through the compressed air supply pipeline and the compressed air pipeline.
Example 1
Fig. 1 shows a schematic diagram of a micro-gas pilot lamp ignition system according to one embodiment of the invention. Fig. 2 shows a schematic diagram of a micro-gas pilot lamp according to one embodiment of the invention. Fig. 3 shows a cross-sectional view of a micro-gas pilot lamp according to one embodiment of the invention. Fig. 4 shows a partially enlarged schematic illustration in accordance with an embodiment of the invention.
The micro-gas combined pilot lamp ignition system shown in fig. 1-4 comprises
The micro-gas pilot lamp 1, the micro-gas pilot lamp 1 comprises a compressed air pipeline 82, a fuel gas pipeline 57, a combined combustion chamber 50, a combustible gas high-pressure low-pressure combustion nozzle 51, a high-pressure gas nozzle 80, a low-pressure gas nozzle 81, a venturi air inlet adjusting device and a venturi device 58, wherein the fuel gas pipeline 57 is a Y-shaped mixing pipe, the high-pressure gas nozzle 80 and the low-pressure gas nozzle 81 are coaxially arranged at one end of the Y-shaped mixing pipe, the venturi air inlet adjusting device is arranged at the joint of the high-pressure gas nozzle 80 and the fuel gas pipeline 57 and the joint of the low-pressure gas nozzle 81 and the fuel gas pipeline 57, the venturi device 58 is arranged between the fuel gas pipeline 57 and the high-pressure gas nozzle 80 and the low-pressure gas nozzle 81, and one end of the compressed air pipeline 82 is communicated with the combined combustion chamber 50;
The ignition click rod 10, the ignition end of the ignition click rod 10 is arranged in the fuel gas pipeline 57, and the ignition click rod 10 is used for igniting fuel gas in the fuel gas pipeline 57;
a high-pressure gas supply pipe 90, the high-pressure gas supply pipe 90 being communicated to the fuel gas pipe 57 through the high-pressure gas nozzle 80;
A low-pressure gas supply pipe 91, the low-pressure gas supply pipe 91 communicating to the fuel gas pipe 57 through the low-pressure gas nozzles 81;
a compressed air supply line 92, the compressed air supply line 92 being connected to the compressed air line 82;
A harmful gas pipe 95, one end of the harmful gas pipe 95 is connected to the gas supply unit, and the other end is communicated with the combined combustion chamber 50;
the ground premix fuel gas pipe 93, the ground premix fuel gas pipe 93 communicates with the top of the micro-gas pilot burner.
Wherein, the combustible gas high-pressure and low-pressure combustion nozzle 51 is arranged in the combined combustion chamber 50 and is communicated with one end of the fuel gas pipeline 57; a compressed air nozzle 55 is disposed within the combined combustion chamber 50 in communication with one end of a compressed air conduit 82.
Wherein the harmful gas nozzle 53 is disposed in the combined combustion chamber 50 and is communicated with one end of the harmful gas pipe 85; a ground premix fuel gas pipe nozzle 56 is disposed within the combined combustion chamber 50 and communicates with the ground premix fuel gas pipe 83.
The micro-gas pilot lamp further comprises a thermocouple 52 and a thermocouple protection tube 86, wherein the thermocouple 52 is arranged in the micro-gas pilot lamp 1, and the thermocouple protection tube 86 is sleeved on the thermocouple 52.
Wherein the firing end of the firing click rod 10 is disposed within the Y-shaped mixing tube.
Wherein, venturi air inlet adjusting device is air intake reverse V-arrangement regulator 65, and air intake reverse V-arrangement regulator 65 includes: the fuel gas pipe 57 comprises an upper reverse V-shaped adjusting device 59 and a lower reverse V-shaped adjusting device 61, wherein the upper reverse V-shaped adjusting device 59 is arranged at the middle lower part of the fuel gas pipe 57, the lower reverse V-shaped adjusting device 61 is arranged at the lower part of the fuel gas pipe 57, and a reverse V-shaped air inlet 60 is formed between the upper reverse V-shaped adjusting device 59 and the lower reverse V-shaped adjusting device 61.
Wherein the lower part of the fuel gas pipe 57 is provided with an inner air outlet 62.
The harmful gas pipe 95 is used for connecting to a harmful gas source, and a harmful gas shut-off valve 31, a harmful gas flowmeter 32, a harmful gas regulating valve 33, a harmful gas flame arrester 35 and a harmful gas pressure transmitter 36 are arranged on the harmful gas pipe 95.
The compressed air supply pipeline 92 is used for being connected to a compressed air source, and a compressed air cut-off valve 22, a compressed air flowmeter 23, a compressed air regulating valve 25 and a compressed air transmitter 26 are arranged on the compressed air supply pipeline 92;
The high-pressure gas supply pipeline 90 is used for being connected to a first fuel gas source, and the high-pressure gas supply pipeline 90 is provided with a high-pressure gas cut-off valve 11, a high-pressure gas flow meter 12, a high-pressure gas pressure transmitter 13, a high-pressure gas regulating valve 15 and a high-pressure gas flame arrester 16;
the low-pressure gas supply pipe 91 is for connection to a second fuel gas source, and the low-pressure gas supply pipe 91 is provided with a low-pressure gas cut-off valve 17, a low-pressure gas flow meter 18, a low-pressure gas regulating valve 19, a low-pressure gas flame arrester 20, and a low-pressure gas pressure transmitter 21.
The ground premix fuel gas pipe 93 is used for being connected to a ground fuel gas source, and a ground premix fuel gas cut-off valve 27, a ground premix fuel gas flowmeter 28 and a ground premix fuel gas transmitter 30 are arranged on the ground premix fuel gas pipe 93.
And a control unit for controlling the opening and closing of the high-pressure gas supply pipe 90, the low-pressure gas supply pipe 91, the compressed air supply pipe 92, and the ignition of the ignition end of the ignition click rod 10.
Wherein the control unit includes: power control cabinet 7 and PLC control cabinet 8.
The ignition click rod comprises an igniter 9 and an ignition rod electrode 10.
The interface of the compressed air supply line 92 is connected to the compressed air nozzle 55 via a line. The PLC control cabinet 9 receives the signal of the compressed air pressure transmitter 26 to meet the design requirement, the PLC control cabinet 9 sends out an instruction, the compressed air cut-off valve 22 is opened, the compressed air flowmeter 23 uploads the PLC control cabinet 9, and the PLC control cabinet 9 sends out an instruction to open the compressed air regulating valve 25 for automatic adjustment;
The harmful gas pipe 95 is connected to the harmful gas nozzle 53 through a pipe. The PLC control cabinet 9 receives the signals of the harmful gas pressure transmitter 36 to meet the design requirements, the PLC control cabinet 9 sends out instructions, the harmful gas cut-off valve 31 is opened, the harmful gas flowmeter 32 uploads the PLC control cabinet 9, and the PLC control cabinet 9 sends out instructions to open the harmful gas regulating valve 33 for automatic regulation;
The ground premix fuel gas pipe 93 interfaces with the ground premix fuel gas nozzle 56 via a pipe. The PLC control cabinet 9 receives the signals of the harmful gas pressure transmitter 36 to meet the design requirements, the PLC control cabinet 9 sends out instructions, the harmful gas cut-off valve 31 is opened, the harmful gas flowmeter 32 uploads the PLC control cabinet 9, and the PLC control cabinet 9 sends out instructions to open the harmful gas regulating valve 33 for automatic regulation;
The ground premixed fuel gas is used as a second set of ignition system, and a ground ignition interface, a ground ignition cut-off valve 27 and a ground premixed fuel gas flowmeter 28 are arranged on a ground premixed fuel gas pipeline 93; the ground premix fuel gas pipe Y-shaped mixing pipe 66 is provided with an ignition dry electrode 10 in the center of the ground premix fuel gas pipe Y-shaped mixing pipe 66 to ignite the mixed gas of the ground premix fuel gas pipe nozzle 65.
The power supply control cabinet 7 is connected with the PLC control cabinet 8, and the thermocouple, the pressure transmitter, the cut-off valve, the regulating valve, the igniter, the flowmeter, the pressure transmitter and the like are connected with the PLC control cabinet;
The ignition steps of the ignition system of this embodiment are as follows:
First, high-pressure gas with high heat value enters through a high-pressure gas supply pipeline 90, and when a high-pressure gas pressure transmitter 13 designed on the pipeline detects that the pressure reaches a designed pressure range, a high-pressure gas cut-off valve 11 is controlled to be opened through a PLC. The high-pressure gas passes through the high-pressure gas flame arrester 16, the high-pressure gas regulating valve 15, and the high-pressure gas cut-off valve 11 to reach the high-pressure gas nozzle 80, and the gas is injected from the high-pressure gas nozzle 80 into the venturi device 58. At the same time, the air in the high pressure gas intake part enters the gap between the upper reverse V-shaped adjusting device 59 and the lower reverse V-shaped adjusting device 61 from the reverse V-shaped air inlet 60, flows to the inner air outlet 62 and flows out, and the air also enters the venturi device 58. The mixed fuel gas is injected into the combined combustion chamber 50 from the high-pressure gas injection port 51, when the PLC control cabinet 8 receives signals of the high-pressure gas flowmeter 12 to control the high-pressure gas regulating valve 15 and meet design requirements, the igniter 9 is controlled to be started, the igniter 9 transmits current to the ignition rod electrode 10 installed at the fuel gas pipeline 57 through a cable, and the ignition rod electrode 10 emits electric sparks to ignite the mixed gas in the combined combustion chamber 50. A thermocouple 52 provided on the combined combustion chamber 50 detects the temperature signal and uploads it to the PLC control cabinet 9. The PLC control cabinet 9 sends out an instruction to close the igniter 9, and the ignition process is completed. The thermocouple 52 arranged in the combined combustion chamber 50 uploads a temperature signal to the PLC control cabinet 8, and the PLC control cabinet 8 sends out a command signal to turn off the igniter 9; and (5) completing the ignition of the high-pressure fuel gas.
The low pressure low heat value gas enters through the low pressure gas supply pipe 91, and when the pressure detected by the low pressure gas pressure transducer 21 designed on the pipe reaches the designed pressure range, the low pressure gas cut-off valve 17 is opened through PLC control. The low-pressure gas passes through the low-pressure gas flame arrester 20, the low-pressure gas regulating valve 19 and the low-pressure gas cut-off valve 17 to reach the low-pressure gas nozzle to enter the fuel gas pipeline, and is ignited by the high-pressure high-calorific-value gas combusted.
The compressed air supply pipeline 92 is automatically controlled by a PLC to open and close the compressed air pneumatic cut-off valve 22 and the compressed air flowmeter 23, and monitoring signals are uploaded to the PLC control cabinet 9. The PLC control cabinet 9 sends out a command to automatically open the compressed air regulating valve 25 to regulate the air flow.
When the pressure transmitter 36 detects that the pressure reaches the pressure, the PLC controls the high-pressure gas cut-off valve 31 to open, and the harmful gas enters the harmful gas nozzle 53 through the harmful gas flame arrester 36, the harmful gas regulating valve 33 and the harmful gas cut-off valve 31 to the harmful gas pipe 85 of the micro-gas pilot burner 1 and is sprayed into the combined combustion chamber 50. Is ignited by the high-pressure and low-pressure gas which is already ignited, or is ignited by a ground premixed fuel gas pipe. When the thermocouple 52 arranged in the combined combustion chamber detects that the flame (temperature) temperature signal is uploaded to the PLC control cabinet 8, the PLC control cabinet 8 sends out a command signal to close the high-pressure gas cut-off valve 11. The high-pressure gas shutoff valve 17, the air shutoff valve 22, and the harmful gas shutoff valve 31 can also be operated independently.
Example 2
Fig. 5 shows a schematic diagram of a micro-gas pilot lamp ignition system according to another embodiment of the invention. Fig. 6 shows a schematic diagram of a micro-gas pilot lamp according to another embodiment of the invention. Fig. 7 shows a cross-sectional view of a micro-gas pilot lamp according to another embodiment of the invention. Fig. 8 shows a partially enlarged schematic illustration according to another embodiment of the invention.
The micro-gas combined pilot lamp ignition system as shown in fig. 5-8 comprises a micro-gas pilot lamp, wherein the micro-gas pilot lamp comprises:
The micro-gas pilot lamp 1, the micro-gas pilot lamp 1 comprises a compressed air pipeline 82, a fuel gas pipeline 57, a combined combustion chamber 50, a combustible gas high-pressure low-pressure combustion nozzle 51, a high-pressure gas nozzle 80, a low-pressure gas nozzle 81, a venturi air inlet adjusting device and a venturi device 58, wherein the fuel gas pipeline 57 is a Y-shaped mixing pipe, the high-pressure gas nozzle 80 and the low-pressure gas nozzle 81 are coaxially arranged at one end of the Y-shaped mixing pipe, the venturi air inlet adjusting device is arranged at the joint of the high-pressure gas nozzle 80 and the fuel gas pipeline 57 and the joint of the low-pressure gas nozzle 81 and the fuel gas pipeline 57, the venturi device 58 is arranged between the fuel gas pipeline 57 and the high-pressure gas nozzle 80 and the low-pressure gas nozzle 81, and one end of the compressed air pipeline 82 is communicated with the combined combustion chamber;
The ignition click rod 10, the ignition end of the ignition click rod 10 is arranged in the micro-gas pilot burner 1, and the ignition click rod 10 is used for igniting fuel gas in the fuel gas pipeline 57;
a high-pressure gas supply pipe 90, the high-pressure gas supply pipe 90 being communicated to the fuel gas pipe 57 through the high-pressure gas nozzle 80;
A low-pressure gas supply pipe 91, the low-pressure gas supply pipe 91 communicating to the fuel gas pipe 57 through the low-pressure gas nozzles 81;
a compressed air supply line 92, the compressed air supply line 92 being connected to the compressed air line 82;
A harmful gas pipe 95, one end of the harmful gas pipe 95 is connected to the gas supply unit, and the other end is communicated with the combined combustion chamber 50;
the ground premix fuel gas pipe 93, the ground premix fuel gas pipe 93 communicates with the top of the micro-gas pilot burner.
Wherein, the combustible gas high-pressure and low-pressure gas nozzles 51 are arranged in the combined combustion chamber and communicated with one end of the fuel gas pipeline 57; a compressed air nozzle 55 is disposed within the combined combustion chamber in communication with one end of a compressed air conduit 82.
The micro-gas pilot burner further comprises a ground premix fuel gas pipe 83 and a harmful gas pipe 85, and the ground premix fuel gas pipe 83 and the harmful gas pipe 85 are arranged in the micro-gas pilot burner 1.
Wherein the harmful gas nozzle 53 is disposed in the combined combustion chamber 50 and is communicated with one end of the harmful gas pipe 85; a ground premix fuel gas pipe nozzle 56 is disposed within the combined combustion chamber 50 and communicates with the ground premix fuel gas pipe 83.
The micro-gas pilot lamp further comprises a thermocouple 52 and a thermocouple protection tube 86, wherein the thermocouple 52 is arranged in the micro-gas pilot lamp 1, and the thermocouple protection tube 86 is sleeved on the thermocouple 52.
Wherein the firing end of the firing click rod 10 is disposed within the ground premix fuel gas tube 83.
The venturi air intake adjusting device is a perforated plate baffle adjusting device 71, the perforated plate baffle adjusting device 71 comprises a shell 72 and a plurality of perforated baffles 73, the plurality of perforated baffles 73 are arranged in the shell 72, the shell 72 is sleeved at one end of the fuel gas pipeline 57, and the high-pressure gas nozzle 80 and the low-pressure gas nozzle 81 penetrate through the plurality of perforated baffles 73 and are communicated with the fuel gas pipeline 57.
Wherein the lower part of the fuel gas pipe 57 is provided with an inner air outlet 62.
The harmful gas pipeline is used for being connected to a harmful gas source, and a harmful gas cut-off valve 31, a harmful gas flowmeter 32, a harmful gas regulating valve 33, a harmful gas flame arrester 35 and a harmful gas pressure transmitter 36 are arranged on the harmful gas pipeline.
The compressed air supply pipeline is used for being connected to a compressed air source, and is provided with a compressed air cut-off valve 22, a compressed air flowmeter 23, a compressed air regulating valve 25 and a compressed air transmitter 26;
the high-pressure gas supply pipeline is used for being connected to a first fuel gas source, and is provided with a high-pressure gas cut-off valve 11, a high-pressure gas flow meter 12, a high-pressure gas pressure transmitter 13, a high-pressure gas regulating valve 15 and a high-pressure gas flame arrester 16;
The low-pressure gas supply pipe is used for connecting to a second fuel gas source, and is provided with a low-pressure gas cut-off valve 17, a low-pressure gas flow meter 18, a low-pressure gas regulating valve 19, a low-pressure gas flame arrester 20 and a low-pressure gas pressure transmitter 21.
The ground premix fuel gas pipe is used for being connected to a ground fuel gas source, and a ground premix fuel gas cut-off valve 27, a ground premix fuel gas flowmeter 28 and a ground premix fuel gas transmitter 30 are arranged on the ground premix fuel gas pipe.
And the control unit is used for controlling the opening and closing of the high-pressure fuel gas supply pipeline 90, the low-pressure fuel gas value supply pipeline 91 and the compressed air supply pipeline 92 and controlling the ignition end of the ignition click rod to ignite.
Wherein the control unit includes: power control cabinet 7 and PLC control cabinet 8.
The ignition click rod comprises an igniter 9 and an ignition rod electrode 10.
In use, the specific ignition process is the same as in example 1.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (10)
1. A micro-gas combination pilot lamp ignition system, the micro-gas combination pilot lamp ignition system comprising:
The micro-gas pilot burner comprises a compressed air pipeline, a fuel gas pipeline, a combined combustion cavity, a combustible gas high-low pressure combustion nozzle, a high-pressure gas nozzle, a low-pressure gas nozzle and a venturi air inlet adjusting device, wherein one end of the combustible gas high-low pressure combustion nozzle is communicated with the combined combustion cavity, one end of the fuel gas pipeline is communicated with the combustible gas high-low pressure combustion nozzle, the other end of the fuel gas pipeline is communicated with the high-pressure gas nozzle and the low-pressure gas nozzle, the venturi air inlet adjusting device is arranged at the joint of the high-pressure gas nozzle and the fuel gas pipeline and the joint of the low-pressure gas nozzle and the fuel gas pipeline, and one end of the compressed air pipeline is communicated with the combined combustion cavity;
The ignition end of the ignition click rod is arranged in the fuel gas pipeline and/or the ground premixed fuel gas pipeline, and the ignition click rod is used for igniting the fuel gas in the fuel gas pipeline and the mixed fuel gas in the ground premixed fuel gas pipeline;
the high-pressure gas supply pipeline is communicated with the fuel gas pipeline through a high-pressure gas nozzle;
A low pressure gas supply conduit that communicates to the fuel gas conduit through a low pressure gas nozzle;
The compressed air supply pipeline is communicated to the compressed air pipeline interface;
One end of the harmful gas supply pipeline is communicated with the combined combustion cavity, and the other end of the harmful gas supply pipeline is communicated with the harmful gas pipeline interface;
The ground premixed fuel gas pipeline is arranged in the micro-gas pilot lamp and is communicated with the ground fuel gas source interface.
2. The micro-air combination pilot lamp ignition system of claim 1 wherein the venturi air intake regulator is an air intake inverted V-shaped regulator comprising: the device comprises an upper inverted V-shaped adjusting device and a lower inverted V-shaped adjusting device, wherein the upper inverted V-shaped adjusting device is arranged at the middle lower part of a fuel gas pipeline of the micro-gas pilot burner, the lower inverted V-shaped adjusting device is arranged at the lower part of the fuel gas pipeline of the micro-gas pilot burner, an inverted V-shaped air inlet or an inverted W-shaped air inlet is formed between the upper inverted V-shaped adjusting device and the lower inverted V-shaped adjusting device, and the high-pressure gas nozzle and the low-pressure gas nozzle penetrate through the Venturi air inlet adjusting device to be communicated with the fuel gas pipeline.
3. The micro-gas combined pilot burner ignition system of claim 1, wherein the venturi air intake adjusting device is a multi-plate baffle adjusting device, the multi-plate baffle adjusting device comprises a shell and a plurality of multi-plate baffles, the multi-plate baffles are arranged in the shell, the shell is sleeved at one end of the fuel gas pipeline, and the high-pressure gas nozzle and the low-pressure gas nozzle penetrate through the multi-plate baffles and are communicated with the fuel gas pipeline.
4. The micro-gas combined pilot burner ignition system of claim 1, wherein the fuel gas pipeline and the ground premixed fuel gas pipeline are Y-shaped mixing pipes, the high-pressure fuel gas nozzle and the low-pressure fuel gas nozzle are coaxially arranged at one end of the fuel gas pipeline, and an ignition click rod is arranged in the Y-shaped mixing pipes; the fire click rod is installed in the fuel gas pipeline and/or the ground premix fuel gas pipeline.
5. The micro-gas combination pilot lamp ignition system of claim 4 further comprising a venturi device disposed between the fuel gas conduit and the high pressure and low pressure gas nozzles.
6. The micro-gas combination pilot lamp ignition system of claim 1 wherein the hazardous gas conduit is configured to be connected to a hazardous gas source, the hazardous gas conduit having disposed thereon at least one of a hazardous gas shut-off valve, a hazardous gas flow meter, a hazardous gas regulator valve, a hazardous gas flame arrestor, and a hazardous gas pressure transmitter.
7. The micro-air combination pilot lamp ignition system of claim 1, wherein the compressed air supply pipeline is used for being connected to a compressed air pipeline interface, and at least one of a compressed air cut-off valve, a compressed air flowmeter, a compressed air regulating valve and a compressed air transmitter is arranged on the compressed air supply pipeline;
The high-pressure gas supply pipeline is used for being connected to the first fuel gas source interface, and is provided with at least one of a high-pressure gas cut-off valve, a high-pressure gas flowmeter, a high-pressure gas pressure transmitter, a high-pressure gas regulating valve and a high-pressure gas flame arrester;
the low-pressure gas supply pipeline is used for being connected to the second fuel gas source interface, and at least one of a low-pressure gas cut-off valve, a low-pressure gas flowmeter, a low-pressure gas regulating valve, a low-pressure gas flame arrester and a low-pressure gas pressure transmitter is arranged on the low-pressure gas supply pipeline.
8. The micro-gas combination pilot lamp ignition system of claim 1, wherein at least one of a ground premix fuel gas shut-off valve, a ground premix fuel gas flow meter, and a ground premix fuel gas transmitter is provided on the ground premix fuel gas conduit.
9. The micro-gas combination pilot lamp ignition system of claim 1 further comprising a control unit for controlling opening and closing of the high pressure gas supply conduit, the low pressure gas supply conduit, the compressed air supply conduit, and controlling ignition end fire opening and closing of the ignition click rod.
10. A method of ignition using the micro-gas combination pilot burner ignition system of any one of claims 1-9, the method of ignition comprising:
the high-pressure gas enters the high-pressure gas nozzle through a high-pressure gas supply pipeline and is conveyed to the combustible gas high-pressure low-pressure combustion nozzle through a fuel gas pipeline;
the ignition click rod ignites the high-pressure gas;
the low-pressure gas enters the low-pressure gas nozzle through a low-pressure gas supply pipeline and is conveyed to the combustible gas high-pressure low-pressure combustion nozzle through a fuel gas pipeline;
The toxic and harmful gas enters the combined combustion cavity through a harmful gas supply pipeline;
igniting low-pressure gas and toxic and harmful gas in the combined combustion chamber by the combusted high-pressure gas;
the compressed air is conveyed to the combustible gas high-pressure and low-pressure combustion nozzle through the compressed air supply pipeline and the compressed air pipeline.
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| CN114542982A (en) * | 2022-02-25 | 2022-05-27 | 圣戈班管道系统有限公司 | Automatic switching and interlocking ignition control method and system for double-path gas source of blast furnace gas diffusing tower |
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| CN2515558Y (en) * | 2001-12-26 | 2002-10-09 | 上海同济高科技发展有限公司 | Automatic synthetic ignitor for torch |
| CN2641475Y (en) * | 2003-08-06 | 2004-09-15 | 北京金瑞华科技有限公司 | Low heat value low pressure/high pressure fuel gas combination burner |
| CN103672963B (en) * | 2012-09-19 | 2015-10-28 | 斯文杰 | A kind of multifunction ignition device |
| CN104421960B (en) * | 2013-08-22 | 2017-09-08 | 吴晓阳 | One kind energy-conservation waste gas altar lamp ignition system and its ignition method |
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