CN109506366B - Vertical natural gas boiler and working method thereof - Google Patents
Vertical natural gas boiler and working method thereof Download PDFInfo
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- CN109506366B CN109506366B CN201811413941.2A CN201811413941A CN109506366B CN 109506366 B CN109506366 B CN 109506366B CN 201811413941 A CN201811413941 A CN 201811413941A CN 109506366 B CN109506366 B CN 109506366B
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 200
- 239000003345 natural gas Substances 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000003546 flue gas Substances 0.000 claims abstract description 98
- 239000007788 liquid Substances 0.000 claims abstract description 78
- 239000000779 smoke Substances 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 233
- 238000002485 combustion reaction Methods 0.000 claims description 78
- 239000007789 gas Substances 0.000 claims description 57
- 239000002737 fuel gas Substances 0.000 claims description 31
- 238000005507 spraying Methods 0.000 claims description 21
- 238000002309 gasification Methods 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 9
- 238000010285 flame spraying Methods 0.000 claims description 6
- 239000002918 waste heat Substances 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000010411 cooking Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 7
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
- F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C1/00—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
- F23C1/08—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air liquid and gaseous fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/14—Details thereof
- F23K5/22—Vaporising devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2300/00—Pretreatment and supply of liquid fuel
- F23K2300/20—Supply line arrangements
- F23K2300/205—Vaporising
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The invention discloses a vertical natural gas boiler, which comprises a vertical pot body, wherein a cylindrical inner container wall body is arranged in the vertical pot body, an annular column-shaped flue gas heat exchange layer is formed between the inner container wall body and the inner wall of the vertical pot body, the upper end of the flue gas heat exchange layer is communicated and connected with a main smoke exhaust pipe, a flow guide heat exchange band is spirally and spirally arranged in the flue gas heat exchange layer, the spiral inner edge of the flow guide heat exchange band is integrally connected with the inner container wall body, and the heat of the flue gas absorbed by the flow guide heat exchange band can be transferred to the inner container wall body; the mixed fuel heating device is simple in structure, the mixed fuel is uniformly heated, and the smoke diversion shell is completely immersed in the liquid storage cavity, so that the heat of smoke absorbed by the smoke diversion shell can be transferred to water in the liquid storage cavity, and heating is promoted.
Description
Technical Field
The invention belongs to the field of boilers, and particularly relates to a vertical natural gas boiler and a working method thereof.
Background
Natural gas is used as gas fuel, and can be easily and fully combusted in a boiler; ethanol is liquid at normal temperature, and ethanol fuel cannot enter in a gas form like natural gas when being supplied into a hearth, so that the phenomenon of uneven combustion is easily generated in a boiler, and thus, a small number of boiler devices using ethanol as fuel are provided.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the vertical natural gas boiler which is uniform in combustion and sufficient in heating and the working method thereof.
The technical scheme is as follows: in order to achieve the purpose, the vertical natural gas boiler comprises a vertical boiler body, wherein a cylindrical inner container wall body is arranged inside the vertical boiler body, an annular column-shaped flue gas heat exchange layer is formed between the inner container wall body and the inner wall of the vertical boiler body, the upper end of the flue gas heat exchange layer is communicated and connected with a main smoke exhaust pipe, a flow guide heat exchange band is spirally and spirally arranged in the flue gas heat exchange layer, the spiral inner edge of the flow guide heat exchange band is integrally connected with the inner container wall body, and the heat of the flue gas absorbed by the flow guide heat exchange band can be transferred to the inner container wall body;
the inner container wall body is internally provided with a cylindrical liquid storage cavity, and a vertical furnace body is coaxially arranged in the liquid storage cavity; a disc-shaped flue gas diversion shell is coaxially arranged below the vertical furnace body, a flue gas diversion cavity is arranged inside the flue gas diversion shell, and a flue gas inlet end of the flue gas diversion cavity is communicated and connected with a flue gas exhaust end of the vertical furnace body through a flue gas exhaust channel; a plurality of shunting smoke guide pipes are uniformly distributed on the circumferential wall body of the smoke shunting shell in a circumferential array, and the shunting smoke guide pipes are used for mutually communicating the lower end of the smoke heat exchange layer with the smoke shunting cavity; the bottom of the flue gas shunting shell is fixedly supported and arranged at the bottom of the liquid storage cavity through a support column and the same axle center.
Furthermore, the vertical furnace body is of a cylindrical heat-conducting shell structure in a vertical posture, and a vertical cylindrical combustion cavity is coaxially arranged inside the shell of the vertical furnace body; a plurality of vertical heat exchange straight pipes are further distributed in the combustion cavity, the upper end of each heat exchange straight pipe extends to the upper end face of the vertical furnace body and is communicated with the position of the liquid level in the liquid storage cavity, and the lower end of each heat exchange straight pipe longitudinally penetrates through the flue gas shunting shell and is communicated with the bottom of the liquid storage cavity; and each heat exchange straight pipe is distributed in a circumferential array along the axis of the combustion chamber; a cylindrical flame-throwing cylinder is coaxially arranged in the combustion chamber and is positioned in the range enclosed by the heat exchange straight pipes; the flame-spraying cylinder is also provided with a plurality of fuel gas spraying holes which are uniformly distributed in a circumferential array, and the fuel gas in the flame-spraying cylinder is sprayed out of the combustion cavity in a divergent shape through the fuel gas spraying holes and is sprayed to each heat exchange straight pipe.
Furthermore, the upper end of the vertical furnace body is integrally and coaxially connected with an annular air inlet shell, an annular cavity is arranged in the air inlet shell, and the annular cavity and the combustion cavity are separated by the disk-shaped wall body; a plurality of combustion-supporting air inlet holes are arranged in the disc-shaped wall body in a circumferential array in a hollow manner, and the annular cavity and the combustion cavity are communicated with each other through the combustion-supporting air inlet holes; a combustion-supporting air booster fan is arranged outside the liquid storage cavity, and an air outlet pipe of the booster fan extends into the annular cavity; a disk-shaped partition plate is coaxially arranged in the flame-throwing cylinder, a gas channel is arranged on the upper side of the disk-shaped partition plate, and a smoke exhaust channel is arranged on the lower side of the disk-shaped partition plate; each fuel gas ejection hole is communicated with the fuel gas channel; the side wall of the lower end of the flaming cylinder is also provided with a plurality of smoke guide holes in a hollow manner, the smoke guide holes are communicated with the smoke exhaust channel, and the lower end of the smoke exhaust channel is communicated with the smoke diversion cavity; a piston is arranged in the fuel gas channel, and the piston separates the fuel gas channel into an ethanol steam channel and a natural gas channel, wherein the natural gas channel is arranged on the lower side of the piston, and the ethanol steam channel is arranged on the upper side of the piston; the device also comprises a hard gas injection straight pipe which is coaxial with the ethanol steam channel, the hard gas injection straight pipe hermetically and slidably penetrates through the through hole in the central part of the disc-shaped wall body, one end, extending into the ethanol steam channel, of the hard gas injection straight pipe is integrally connected with the piston, a natural gas supply channel is coaxially arranged in the hard gas injection straight pipe, and the lower end of the natural gas supply channel is communicated with the natural gas channel; the upper end of the hard gas injection straight pipe is fixedly connected with a gas adapter; the gas adapter is characterized by also comprising a flexible natural gas supply pipe, wherein the gas outlet end of the natural gas supply pipe is connected with the gas adapter; the natural gas supply pipe is communicated with the natural gas supply channel through a gas adapter;
the upper side of the vertical pot body is further provided with a bearing platform, a supporting part is arranged on the bearing platform, a linear push rod motor is installed on the supporting part, and the lower end of a linear push rod of the linear push rod motor is synchronously connected with the gas adapter.
Further, an ethanol gasification pipe is spirally and spirally arranged between the flame projecting cylinder and the inner wall of the combustion chamber; one end of the ethanol gasification pipe is communicated with the ethanol steam channel through a switching pipe, the other end of the ethanol gasification pipe is communicated with an external ethanol liquid supply pipe, and the ethanol liquid supply pipe is also provided with a one-way valve for preventing gas from flowing backwards; air pressure sensors are arranged in the ethanol steam channel and the natural gas channel; an electronic ignition device is arranged in the combustion chamber; and the other end of the ethanol liquid supply pipe is provided with a liquid ethanol supply device.
Further, a use method of the vertical natural gas boiler comprises the following steps:
a preparation stage: before the equipment is started, cold water to be heated is injected into the liquid storage cavity, and the liquid level in the liquid storage cavity is completely immersed in the vertical furnace body;
the flue gas waste heat utilization method comprises the following steps: high-temperature flue gas generated by combustion in a combustion cavity of the vertical furnace body is continuously discharged into a flue gas diversion cavity through a smoke discharge channel, and the flue gas diversion shell is completely immersed in the liquid storage cavity, so that the heat of the flue gas absorbed by the flue gas diversion shell can be transferred into water in the liquid storage cavity, heating is promoted, meanwhile, the flue gas in the flue gas diversion cavity is uniformly introduced into the lower end of the flue gas heat exchange layer through each diversion smoke guide pipe, the high-temperature flue gas at the lower end of the flue gas heat exchange layer gradually ascends spirally along the spiral direction of the flow guide heat exchange band, the heat of the flue gas absorbed by the flow guide heat exchange band can be transferred to the inner container wall body in the process that the high-temperature flue gas gradually ascends spirally along the spiral direction of the flow guide heat exchange band, and the inner container wall body continuously guides the; finally, the flue gas is discharged through a main smoke discharge pipe at the upper end of the flue gas heat exchange layer;
the combustion heating method in the combustion chamber comprises the following steps: starting a combustion-supporting air booster fan, so that the combustion-supporting air pressure formed in the annular cavity is formed, and further the combustion-supporting air in the annular cavity is continuously and uniformly introduced into the ethanol steam channel through a plurality of combustion-supporting air inlet holes; meanwhile, a linear push rod motor is started to enable the linear push rod to do contraction movement, so that a piston is driven to do upward movement until all gas ejection holes on the flame ejection cylinder are communicated with a natural gas channel, then a natural gas supply pipe continuously supplies natural gas to a natural gas supply channel, so that natural gas pressure is formed in the natural gas channel, further pressure-accumulating natural gas in the natural gas channel is ejected out of a cylindrical combustion cavity in a divergent manner through a plurality of gas ejection holes, meanwhile, an electronic ignition device in the combustion cavity is started, further a plurality of gas ejection holes eject natural gas combustion flame to the cylindrical combustion cavity in a divergent manner, further, the tail end of the flame is uniformly ejected to the inner wall of the vertical furnace body and each heat exchange straight pipe, further, the wall of the vertical furnace body and each heat exchange straight pipe are fully heated, and further, the wall of the vertical furnace body continuously heats water, meanwhile, the volume of the water in each heat exchange straight pipe expands after being heated, so that the heated water floats upwards in each heat exchange straight pipe, the water in each heat exchange straight pipe continuously flows upwards, the water at the bottom of the liquid storage cavity is instantly supplemented into each heat exchange straight pipe, and each heat exchange straight pipe is heated circularly; meanwhile, the ethanol gasification pipe is completely immersed in the flame in the cylindrical combustion cavity, so that the ethanol gasification pipe is in a continuous high-temperature state; starting a linear push rod motor to enable the linear push rod to do extension movement, and further driving a piston to do downward movement until the axial lengths of the natural gas channel and the ethanol steam channel are the same; meanwhile, the ethanol liquid supply pipe continuously supplies liquid ethanol to the ethanol gasification pipe, the liquid ethanol flowing into the ethanol gasification pipe is quickly gasified, the gasified gas ethanol steam is quickly led into the ethanol steam channel through the adapter pipe, pressure-accumulating ethanol steam is further formed in the ethanol steam channel, at the moment, a plurality of fuel gas spraying holes communicated with the ethanol steam channel spray ethanol steam to the cylindrical combustion cavity in a divergent manner, meanwhile, a plurality of fuel gas spraying holes communicated with the natural gas channel spray natural gas to the cylindrical combustion cavity in a divergent manner, a plurality of fuel gas spraying holes communicated with the ethanol steam channel spray ethanol steam combustion flame to the cylindrical combustion cavity in a divergent manner, and a plurality of fuel gas spraying holes communicated with the natural gas channel spray natural gas combustion flame to the cylindrical combustion cavity in a divergent manner; and then natural gas flame and ethanol steam flame in the cylindrical combustion cavity heat the inner wall of the vertical furnace body and each heat exchange straight pipe continuously together, and further under the action of heat conduction, the wall body of the vertical furnace body heats water in the liquid storage cavity continuously, meanwhile, the water in each heat exchange straight pipe expands after being heated, and further the heated water floats upwards in each heat exchange straight pipe, so that the water in each heat exchange straight pipe continuously flows upwards, the water at the bottom of the liquid storage cavity is supplemented into each heat exchange straight pipe instantly, and further each heat exchange straight pipe realizes cyclic heating, so that the water in the liquid storage cavity is heated continuously, and meanwhile, the air pressure sensors in the ethanol steam channel and the natural gas channel monitor the air pressure in real time, if the air pressure in the ethanol steam channel is greater than the air pressure in the natural gas channel, the piston is driven to move upwards, and further the number of gas jet holes communicated with the ethanol steam channel is reduced, the unit time ejection amount of the ethanol steam channel is reduced, so that a throttling effect is achieved, the air pressure in the ethanol steam channel is reduced until the air pressure in the ethanol steam channel is the same as the air pressure in the natural gas channel, and the ejection uniformity of the whole flame is further ensured; similarly, if the air pressure in the ethanol steam channel is smaller than the air pressure in the natural gas channel, the piston is driven to move downwards.
Has the advantages that: the mixed fuel heating device is simple in structure, the mixed fuel is uniformly heated, and the flue gas shunting shell is completely immersed in the liquid storage cavity, so that the heat of the flue gas absorbed by the flue gas shunting shell can be transferred to the water in the liquid storage cavity, the heating is further promoted, meanwhile, the flue gas in the flue gas shunting cavity is uniformly guided into the lower end of the flue gas heat exchange layer through each shunting smoke guide pipe, the high-temperature flue gas entering the lower end of the flue gas heat exchange layer gradually rises spirally along the spiral direction of the flow guide heat exchange band, the heat of the flue gas absorbed by the flow guide heat exchange band can be transferred to the wall body of the liner in the process that the high-temperature flue gas gradually rises spirally along the spiral direction of the flow guide heat exchange band, and the liner of the liner.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a perspective cross-sectional view of the apparatus;
FIG. 3 is a schematic front sectional view of the apparatus;
FIG. 4 is a cross-sectional view taken along line c of FIG. 3;
FIG. 5 is a partial cross-sectional view of a flame barrel.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The vertical natural gas boiler shown in fig. 1 to 5 comprises a vertical boiler body 76, wherein a cylindrical inner container wall body 115 is arranged inside the vertical boiler body 76, an annular cylindrical flue gas heat exchange layer 117 is formed between the inner container wall body 115 and the inner wall of the vertical boiler body 76, the upper end of the flue gas heat exchange layer 117 is communicated and connected with a main smoke exhaust pipe 119, a spiral flow guide heat exchange band 110 is spirally and spirally arranged in the flue gas heat exchange layer 117, the spiral inner edge of the flow guide heat exchange band 110 is integrally connected with the inner container wall body 115, and the heat of the flue gas absorbed by the flow guide heat exchange band 110 can be transferred to the inner container wall body 115;
the inner container wall body 115 is internally provided with a cylindrical liquid storage cavity 73, and a vertical furnace body 75 is coaxially arranged in the liquid storage cavity 73; a disc-shaped flue gas diversion shell 111 is coaxially arranged below the vertical furnace body 75, a flue gas diversion cavity 112 is arranged inside the flue gas diversion shell 111, and a flue gas inlet end of the flue gas diversion cavity 112 is communicated and connected with a flue gas exhaust end of the vertical furnace body 75 through a flue gas exhaust channel 23.1; a plurality of shunting smoke guide pipes 114 are uniformly distributed on the circumferential wall body of the smoke shunting shell 111 in a circumferential array, and the lower end of the smoke heat exchange layer 117 is communicated with the smoke shunting cavity 112 through each shunting smoke guide pipe 114; the bottom of the flue gas diversion shell 111 is arranged at the bottom of the liquid storage cavity 73 through a support column 113 and a coaxial fixed support.
The vertical furnace body 75 is a vertical cylindrical heat-conducting shell structure, and a vertical cylindrical combustion chamber 18 is coaxially arranged inside the shell of the vertical furnace body 75; a plurality of vertical heat exchange straight pipes 116 are further distributed in the combustion chamber 18, the upper end of each heat exchange straight pipe 116 extends to the upper end face 120 of the vertical furnace body 75 and is communicated with the position of the liquid level in the liquid storage chamber 73, and the lower end of each heat exchange straight pipe 116 longitudinally penetrates through the flue gas shunting shell 111 and is communicated with the bottom of the liquid storage chamber 73; and each heat exchange straight pipe 116 is distributed along the axis of the combustion chamber 18 in a circumferential array; a cylindrical flame projecting cylinder 21 is coaxially arranged in the combustion chamber 18, and the flame projecting cylinder 21 is positioned in a range enclosed by the plurality of heat exchange straight pipes 116; the flame-spraying cylinder 21 is further provided with a plurality of fuel gas spraying holes 22 which are uniformly distributed in a circumferential array, and the fuel gas in the flame-spraying cylinder 21 is sprayed out of the combustion cavity 18 in a divergent manner through the plurality of fuel gas spraying holes 22 and is sprayed to each heat exchange straight pipe 116.
The upper end of the vertical furnace body 75 is integrally and coaxially connected with an annular air inlet shell 12, an annular cavity 15 is arranged in the air inlet shell 12, and the annular cavity 15 is separated from the combustion cavity 18 through the disc-shaped wall body 17; a plurality of combustion-supporting air inlet holes 16 are arranged on the disc-shaped wall body 17 in a circumferential array in a hollow manner, and the annular cavity 15 and the combustion cavity 18 are communicated with each other through the combustion-supporting air inlet holes 16; a combustion-supporting air booster fan 5 is arranged outside the liquid storage cavity 73, and an air outlet pipe 13 of the booster fan 5 extends into the annular cavity 15; a disk-shaped partition plate 29 is coaxially arranged in the flame-throwing cylinder 21, a gas channel is arranged on the upper side of the disk-shaped partition plate 29, and the smoke exhaust channel 23.1 is arranged on the lower side of the disk-shaped partition plate 29; each fuel gas ejection hole 22 is communicated with the fuel gas channel; the side wall of the lower end of the flame-throwing cylinder 21 is also provided with a plurality of smoke guide holes 23 in a hollow manner, the smoke guide holes 23 are communicated with the smoke exhaust channel 23.1, and the lower end of the smoke exhaust channel 23.1 is communicated with the smoke diversion cavity 112; a piston 25 is arranged in the fuel gas channel, the piston 25 separates the fuel gas channel into an ethanol steam channel 27 and a natural gas channel 28, wherein the natural gas channel 28 is arranged on the lower side of the piston 25, and the ethanol steam channel 27 is arranged on the upper side of the piston 25; the device also comprises a hard gas injection straight pipe 4 which is coaxial with the ethanol steam channel 27, the hard gas injection straight pipe 4 hermetically and slidably penetrates through a through hole 24 in the central part of the disc-shaped wall body 17, one end, extending into the ethanol steam channel 27, of the hard gas injection straight pipe 4 is integrally connected with the piston 25, a natural gas supply channel 26 is coaxially arranged in the hard gas injection straight pipe 4, and the lower end of the natural gas supply channel 26 is communicated with the natural gas channel 28; the upper end of the hard gas injection straight pipe 4 is fixedly connected with a gas adapter 3; the gas adapter further comprises a flexible natural gas supply pipe 9, and the gas outlet end of the natural gas supply pipe 9 is connected with the gas adapter 3; the natural gas supply pipe 9 is communicated with the natural gas supply channel 26 through a gas adapter 3;
the vertical pot body 76 upside still is provided with load-bearing platform 72, be provided with supporting component 71 on the load-bearing platform 72, install linear push rod motor 1 on the supporting component 71, linear push rod motor 1's 2 lower extreme synchronous connections of linear push rod the gas adapter 3.
An ethanol gasification pipe 20 is spirally and spirally arranged between the flame throwing cylinder 21 and the inner wall of the combustion cavity 18; one end of the ethanol gasification pipe 20 is communicated with the ethanol steam channel 27 through a switching pipe 31, the other end of the ethanol gasification pipe 20 is communicated with an external ethanol liquid supply pipe 7, and the ethanol liquid supply pipe 7 is also provided with a one-way valve for preventing gas from flowing backwards; air pressure sensors are arranged in the ethanol steam channel 27 and the natural gas channel 28; an electronic ignition device is arranged in the combustion cavity 18; the other end of the ethanol liquid supply pipe 7 is provided with a liquid ethanol supply device 118.
The method, the process and the technical progress of the scheme are organized as follows:
a preparation stage: before the equipment is started, cold water to be heated is injected into the liquid storage cavity 73, and the liquid level in the liquid storage cavity 73 is completely immersed in the vertical furnace body 75;
the flue gas waste heat utilization method comprises the following steps: the high-temperature flue gas generated by combustion in the combustion chamber 18 of the vertical furnace body 75 is continuously discharged into the flue gas diversion chamber 112 through the smoke discharge channel 23.1, because the flue gas shunting shell 111 is completely immersed in the liquid storage cavity 73, the heat of the flue gas absorbed by the flue gas shunting shell 111 can be transferred to the water in the liquid storage cavity 73, further promoting the heating, at the same time, the flue gas in the flue gas diversion cavity 112 is uniformly guided to the lower end of the flue gas heat exchange layer 117 through each diversion smoke guiding pipe 114, then the high-temperature flue gas entering the lower end of the flue gas heat exchange layer 117 gradually rises in a spiral shape along the spiral direction of the diversion heat exchange band 110, the heat of the flue gas absorbed by the diversion heat exchange band 110 can be transferred to the liner wall body 115 in the process that the high-temperature flue gas gradually rises in a spiral shape along the spiral direction of the diversion heat exchange band 110, the liner wall body 115 continuously conducts heat conduction to the liquid storage cavity 73 to release heat, and therefore waste heat utilization of smoke is achieved; finally, the flue gas is discharged through a main smoke discharge pipe 119 at the upper end of the flue gas heat exchange layer 117;
combustion heating method in the combustion chamber 18: starting the combustion-supporting air booster fan 5, so that the combustion-supporting air pressure formed in the annular cavity 15 is achieved, and further the combustion-supporting air in the annular cavity 15 is continuously and uniformly introduced into the ethanol steam channel 27 through the plurality of combustion-supporting air inlet holes 16; meanwhile, the linear push rod motor 1 is started to enable the linear push rod 2 to do contraction movement, so as to drive the piston 25 to do upward movement until all the gas ejection holes 22 on the flame ejection cylinder 21 are communicated with the natural gas channel 28, at the moment, the natural gas supply pipe 9 continuously supplies natural gas to the natural gas supply channel 26, so as to form natural gas pressure in the natural gas channel 28, further, the pressure-accumulating natural gas in the natural gas channel 28 is ejected out of the cylindrical combustion cavity 18 in a divergent manner through the plurality of gas ejection holes 22, meanwhile, the electronic ignition device in the combustion cavity 18 is started, further, the plurality of gas ejection holes 22 are ejected out of natural gas combustion flame to the cylindrical combustion cavity 18 in a divergent manner, further, the tail end of the flame is uniformly ejected to the inner wall of the vertical furnace body 75 and each heat exchange straight pipe 116, further, the wall of the vertical furnace body 75 and each heat, the wall body of the vertical furnace body 75 continuously heats the water in the liquid storage cavity 73, meanwhile, the water in each heat exchange straight pipe 116 expands after being heated, and then the heated water floats upwards in each heat exchange straight pipe 116, so that the water in each heat exchange straight pipe 116 continuously flows upwards, the water at the bottom of the liquid storage cavity 73 is instantly supplemented into each heat exchange straight pipe 116, and further each heat exchange straight pipe 116 realizes cyclic heating; meanwhile, the ethanol gasification pipe 20 is completely immersed in the flame in the cylindrical combustion chamber 18, so that the ethanol gasification pipe 20 is in a continuous high-temperature state; at the moment, the linear push rod motor 1 is started to enable the linear push rod 2 to do extension movement, and further the piston 25 is driven to do downward movement until the axial lengths of the natural gas channel 28 and the ethanol steam channel 27 are the same; at the same time, the ethanol liquid supply pipe 7 continuously supplies the liquid ethanol to the ethanol evaporation pipe 20, the liquid ethanol flowing into the ethanol evaporation pipe 20 is quickly evaporated, and the gasified gas ethanol steam is rapidly guided into the ethanol steam channel 27 through the adapter tube 31, further, the ethanol steam with pressure accumulation is formed in the ethanol steam channel 27, at this time, a plurality of fuel gas spraying holes 22 communicated with the ethanol steam channel 27 spray the ethanol steam to the cylindrical combustion chamber 18 in a divergent shape, at the same time, the gas spraying holes 22 communicated with the natural gas channel 28 spray natural gas to the cylindrical combustion chamber 18 in a divergent shape, and then the plurality of fuel gas spraying holes 22 communicated with the ethanol steam channel 27 spray ethanol steam combustion flame to the cylindrical combustion cavity 18 in a divergent shape, the gas ejection holes 22 communicated with the natural gas channel 28 eject natural gas combustion flame to the cylindrical combustion cavity 18 in a divergent shape; further, the natural gas flame and the ethanol steam flame in the cylindrical combustion chamber 18 continuously heat the inner wall of the vertical furnace body 75 and each heat exchange straight pipe 116 together, further, under the action of heat conduction, the wall body of the vertical furnace body 75 continuously heats the water in the liquid storage chamber 73, meanwhile, the water in each heat exchange straight pipe 116 expands after being heated, further, the heated water floats upwards in each heat exchange straight pipe 116, further, the water in each heat exchange straight pipe 116 continuously flows upwards, the water at the bottom of the liquid storage chamber 73 is instantly supplemented into each heat exchange straight pipe 116, further, each heat exchange straight pipe 116 realizes circulation heating, the water in the liquid storage chamber 73 is continuously heated, meanwhile, the air pressure sensors in the ethanol steam channel 27 and the natural gas channel 28 monitor the air pressure in real time, if the air pressure in the ethanol steam channel 27 is greater than the air pressure in the natural gas channel 28, further, the piston 25 is driven to move upwards, further reducing the number of the fuel gas ejection holes 22 communicated with the ethanol steam channel 27, reducing the ejection amount of the ethanol steam channel 27 in unit time, further playing a throttling effect, reducing the air pressure in the ethanol steam channel 27 until the air pressure in the ethanol steam channel 27 is the same as the air pressure in the natural gas channel 28, and further ensuring the ejection uniformity of the whole flame; similarly, if the pressure in the ethanol vapor passage 27 is lower than the pressure in the natural gas passage 28, the piston 25 is driven to move downward.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (2)
1. A vertical natural gas boiler, characterized in that: the novel cooking pot comprises a vertical pot body (76), wherein a cylindrical inner container wall body (115) is arranged inside the vertical pot body (76), an annular column-shaped flue gas heat exchange layer (117) is formed between the inner container wall body (115) and the inner wall of the vertical pot body (76), the upper end of the flue gas heat exchange layer (117) is communicated and connected with a total smoke exhaust pipe (119), a flow guide heat exchange band (110) is spirally and spirally arranged in the flue gas heat exchange layer (117), the spiral inner edge of the flow guide heat exchange band (110) is integrally connected with the inner container wall body (115), and the heat of flue gas absorbed by the flow guide heat exchange band (110) can be transferred to the inner container wall body (115);
the inner container wall body (115) is internally provided with a cylindrical liquid storage cavity (73), and a vertical furnace body (75) is coaxially arranged in the liquid storage cavity (73); a disc-shaped flue gas diversion shell (111) is coaxially arranged below the vertical furnace body (75), a flue gas diversion cavity (112) is formed inside the flue gas diversion shell (111), and a flue gas inlet end of the flue gas diversion cavity (112) is communicated and connected with a flue gas exhaust end of the vertical furnace body (75) through a flue gas exhaust channel (23.1); a plurality of shunting smoke guide pipes (114) are uniformly distributed on the circumferential wall body of the smoke shunting shell (111) in a circumferential array, and the lower end of the smoke heat exchange layer (117) is communicated with the smoke shunting cavity (112) by each shunting smoke guide pipe (114); the bottom of the flue gas shunting shell (111) is fixedly supported at the bottom of the liquid storage cavity (73) through a support column (113) and the same axis;
the vertical furnace body (75) is of a vertical cylindrical heat-conducting shell structure, and a vertical cylindrical combustion chamber (18) is coaxially arranged inside the shell of the vertical furnace body (75); a plurality of vertical heat exchange straight pipes (116) are further distributed in the combustion chamber (18), the upper end of each heat exchange straight pipe (116) extends to the upper end face (120) of the vertical furnace body (75) and is communicated with the position of the liquid level in the liquid storage chamber (73), and the lower end of each heat exchange straight pipe (116) longitudinally penetrates through the flue gas shunting shell (111) and is communicated with the bottom of the liquid storage chamber (73); and each heat exchange straight pipe (116) is distributed along the axis of the combustion cavity (18) in a circumferential array; a cylindrical flame projecting cylinder (21) is coaxially arranged in the combustion cavity (18), and the flame projecting cylinder (21) is positioned in a range enclosed by the heat exchange straight pipes (116); the flame-spraying cylinder (21) is also provided with a plurality of fuel gas spraying holes (22) in a circumferential array, and gas fuel gas in the flame-spraying cylinder (21) is sprayed out of the combustion cavity (18) in a divergent manner through the plurality of fuel gas spraying holes (22) and is sprayed to each heat exchange straight pipe (116);
the upper end of the vertical furnace body (75) is integrally and coaxially connected with an annular air inlet shell (12), an annular cavity (15) is arranged in the air inlet shell (12), and the annular cavity (15) is separated from the combustion cavity (18) through a disc-shaped wall body (17); a plurality of combustion air inlet holes (16) are arranged in the disc-shaped wall body (17) in a circumferential array in a hollow manner, and the annular cavity (15) and the combustion cavity (18) are communicated with each other through the combustion air inlet holes (16); a combustion-supporting air booster fan (5) is arranged outside the liquid storage cavity (73), and an air outlet pipe (13) of the booster fan (5) extends into the annular cavity (15); a disc-shaped partition plate (29) is coaxially arranged in the flame-throwing cylinder (21), the upper side of the disc-shaped partition plate (29) is a gas channel, and the lower side of the disc-shaped partition plate (29) is the smoke exhaust channel (23.1); each fuel gas ejection hole (22) is communicated with the fuel gas channel; the side wall of the lower end of the flame-throwing cylinder (21) is also provided with a plurality of smoke guide holes (23) in a hollow manner, the smoke guide holes (23) are communicated with the smoke exhaust channel (23.1), and the lower end of the smoke exhaust channel (23.1) is communicated with the smoke diversion cavity (112); a piston (25) is arranged in the gas channel, the piston (25) separates the gas channel into an ethanol steam channel (27) and a natural gas channel (28), wherein the natural gas channel (28) is arranged on the lower side of the piston (25), and the ethanol steam channel (27) is arranged on the upper side of the piston (25); the device is characterized by further comprising a hard gas injection straight pipe (4) which is coaxial with the ethanol steam channel (27), wherein the hard gas injection straight pipe (4) hermetically and slidably penetrates through a through hole (24) in the central part of the disc-shaped wall body (17), one end, extending into the ethanol steam channel (27), of the hard gas injection straight pipe (4) is integrally connected with the piston (25), a natural gas supply channel (26) is coaxially arranged in the hard gas injection straight pipe (4), and the lower end of the natural gas supply channel (26) is communicated with the natural gas channel (28); the upper end of the hard gas injection straight pipe (4) is fixedly connected with a gas adapter (3); the device also comprises a flexible natural gas supply pipe (9), wherein the gas outlet end of the natural gas supply pipe (9) is connected with the gas adapter (3); the natural gas supply pipe (9) is communicated with the natural gas supply channel (26) through a gas adapter (3);
a bearing platform (72) is further arranged on the upper side of the vertical pot body (76), a supporting part (71) is arranged on the bearing platform (72), a linear push rod motor (1) is mounted on the supporting part (71), and the lower end of a linear push rod (2) of the linear push rod motor (1) is synchronously connected with the gas adapter (3);
an ethanol gasification pipe (20) is spirally and spirally arranged between the flame projecting cylinder (21) and the inner wall of the combustion cavity (18); one end of the ethanol gasification pipe (20) is communicated with the ethanol steam channel (27) through a switching pipe (31), the other end of the ethanol gasification pipe (20) is communicated with an external ethanol liquid supply pipe (7), and the ethanol liquid supply pipe (7) is also provided with a one-way valve for preventing gas from flowing backwards; air pressure sensors are arranged in the ethanol steam channel (27) and the natural gas channel (28); an electronic ignition device is arranged in the combustion cavity (18); the other end of the ethanol liquid supply pipe (7) is provided with a liquid ethanol supply device (118).
2. The method of using a vertical natural gas boiler according to claim 1, wherein:
a preparation stage: before the equipment is started, cold water to be heated is injected into the liquid storage cavity (73), and the liquid level in the liquid storage cavity (73) is completely immersed in the vertical furnace body (75);
the flue gas waste heat utilization method comprises the following steps: high-temperature flue gas generated by combustion in a combustion cavity (18) of the vertical furnace body (75) is continuously discharged into a flue gas diversion cavity (112) through a smoke discharge channel (23.1), because the flue gas diversion shell (111) is completely immersed in the liquid storage cavity (73), the heat of the flue gas absorbed by the flue gas diversion shell (111) is transferred into the water in the liquid storage cavity (73) to further promote heating, meanwhile, the flue gas in the flue gas diversion cavity (112) is uniformly guided into the lower end of the flue gas heat exchange layer (117) through each diversion smoke guide pipe (114), the high-temperature flue gas entering the lower end of the flue gas heat exchange layer (117) gradually rises spirally along the spiral direction of the flow guide heat exchange band (110), and the heat of the flue gas absorbed by the flow guide heat exchange band (110) can be transferred to an inner container (115) in the process that the high-temperature flue gas gradually rises spirally along the spiral direction of the flow guide heat exchange band (110), the inner container wall body (115) continuously conducts heat conduction to the liquid storage cavity (73) to release heat, and therefore waste heat utilization of smoke is achieved; finally, the flue gas is discharged through a main smoke discharge pipe (119) at the upper end of the flue gas heat exchange layer (117);
method for combustion heating in a combustion chamber (18): starting a combustion-supporting air booster fan (5), so that combustion-supporting air wind pressure is formed in the annular cavity (15), and further the combustion-supporting air in the annular cavity (15) is continuously and uniformly led into the ethanol steam channel (27) through a plurality of combustion-supporting air inlet holes (16); meanwhile, the linear push rod motor (1) is started to enable the linear push rod (2) to do contraction movement, and then the piston (25) is driven to do upward movement until all the gas ejection holes (22) on the flame ejection cylinder (21) are communicated with the natural gas channel (28), at the moment, the natural gas supply pipe (9) continuously supplies natural gas to the natural gas supply channel (26), so that natural gas pressure is formed in the natural gas channel (28), and then pressure-accumulating natural gas in the natural gas channel (28) is ejected out of the cylindrical combustion cavity (18) in a divergent manner through the plurality of gas ejection holes (22), and meanwhile, the electronic ignition device in the combustion cavity (18) is started, so that the plurality of gas ejection holes (22) eject natural gas combustion flame to the cylindrical combustion cavity (18) in a divergent manner, and then the tail end of the flame is uniformly ejected to the inner wall of the vertical furnace body (75) and each heat exchange straight pipe, further, the wall body of the vertical furnace body (75) and each heat exchange straight pipe (116) are fully heated, and further, under the action of heat conduction, the wall body of the vertical furnace body (75) continuously heats the water in the liquid storage cavity (73), meanwhile, the water in each heat exchange straight pipe (116) is heated and then expands in volume, so that the heated water floats upwards in each heat exchange straight pipe (116), further, the water in each heat exchange straight pipe (116) continuously flows upwards, the water at the bottom of the liquid storage cavity (73) is instantly supplemented into each heat exchange straight pipe (116), and further, each heat exchange straight pipe (116) is circularly heated; meanwhile, the ethanol gasification pipe (20) is completely immersed in the flame in the cylindrical combustion cavity (18), so that the ethanol gasification pipe (20) is in a continuous high-temperature state; starting the linear push rod motor (1) to enable the linear push rod (2) to do extension movement, and further driving the piston (25) to do downward movement until the axial lengths of the natural gas channel (28) and the ethanol steam channel (27) are the same; meanwhile, the ethanol liquid supply pipe (7) continuously supplies liquid ethanol to the ethanol gasification pipe (20), the liquid ethanol flowing into the ethanol gasification pipe (20) is quickly gasified, the gasified gaseous ethanol steam is quickly led into the ethanol steam channel (27) through the adapter pipe (31), and pressure-accumulated ethanol steam is further formed in the ethanol steam channel (27), at the moment, a plurality of fuel gas spraying holes (22) communicated with the ethanol steam channel (27) spray ethanol steam to the cylindrical combustion cavity (18) in a divergent manner, at the same time, a plurality of fuel gas spraying holes (22) communicated with the natural gas channel (28) spray natural gas to the cylindrical combustion cavity (18) in a divergent manner, and a plurality of fuel gas spraying holes (22) communicated with the ethanol steam channel (27) spray ethanol steam combustion flame to the cylindrical combustion cavity (18) in a divergent manner, and a plurality of fuel gas spraying holes (22) communicated with the natural gas channel (28) spray natural gas flame to the cylindrical combustion cavity in a divergent manner (18) Spraying natural gas to burn flame; further, the natural gas flame and the ethanol steam flame in the cylindrical combustion cavity (18) jointly heat the inner wall of the vertical furnace body (75) and each heat exchange straight pipe (116) continuously, further, under the action of heat conduction, the wall body of the vertical furnace body (75) heats the water in the liquid storage cavity (73) continuously, meanwhile, the water in each heat exchange straight pipe (116) expands after being heated, further, the heated water floats upwards in each heat exchange straight pipe (116), further, the water in each heat exchange straight pipe (116) continuously flows upwards, the water at the bottom of the liquid storage cavity (73) is supplemented into each heat exchange straight pipe (116) immediately, further, each heat exchange straight pipe (116) is heated circularly, the water in the liquid storage cavity (73) is heated continuously, meanwhile, the air pressure sensors in the ethanol steam channel (27) and the natural gas channel (28) monitor the air pressure in real time, if the air pressure in the ethanol steam channel (27) is greater than the air pressure in the natural gas channel (28), the piston (25) is driven to move upwards, so that the number of fuel gas spraying holes (22) communicated with the ethanol steam channel (27) is reduced, the spraying amount of the ethanol steam channel (27) in unit time is reduced, a throttling effect is achieved, the air pressure in the ethanol steam channel (27) is reduced until the air pressure in the ethanol steam channel (27) is the same as the air pressure in the natural gas channel (28), and the spraying uniformity of the whole flame is ensured; similarly, if the air pressure in the ethanol steam channel (27) is smaller than the air pressure in the natural gas channel (28), the piston (25) is driven to move downwards.
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| CN106545859A (en) * | 2015-09-17 | 2017-03-29 | 哈尔滨市金京锅炉有限公司 | A kind of combustion chamber of liquid fuel and the dual-purpose normal pressure drinking water boiler of biogas |
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Denomination of invention: A vertical natural gas boiler and its working method Granted publication date: 20210402 Pledgee: Bank of China Limited by Share Ltd. Xinchang branch Pledgor: Xinchang Jinshun Steel Structure Co.,Ltd. Registration number: Y2024330001087 |