CN107504472B - Multipurpose fuel boiler using gas as fuel - Google Patents
Multipurpose fuel boiler using gas as fuel Download PDFInfo
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- CN107504472B CN107504472B CN201710884892.XA CN201710884892A CN107504472B CN 107504472 B CN107504472 B CN 107504472B CN 201710884892 A CN201710884892 A CN 201710884892A CN 107504472 B CN107504472 B CN 107504472B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The utility model provides a multipurpose fuel boiler of gas, includes drum, combustion chamber, is equipped with the combustor interface in the front of combustion chamber, is equipped with the maintenance mouth in the lateral wall of combustion chamber, the drum include middle drum body, be equipped with front tube sheet and back tube sheet respectively at middle drum body's front and back both ends, be equipped with a plurality of drum internal flue pipes that communicate front tube sheet and back tube sheet in the drum, the internal flue pipe constitutes three return flue; the combustion chamber is a return flue; a two-return flue is arranged between the combustion chamber and the lower part of the boiler barrel, and a pipe wall is formed by optimally arranging the combustion chamber and the flue and connecting fins between the water passing pipe bundle and the pipe. The fuel has the advantages of good integral structure, convenient production and manufacture, fully improved combustion environment, moderate smoke speed, full fuel combustion, low emission of harmful substances and environmental protection. Convenient maintenance and no maintenance dead angle. Any part can be quickly maintained. And the maintenance quality is higher. The high-temperature flue gas exhausted from the tail of the boiler can be recycled, the temperature of a hearth is increased, and the excess air coefficient is reduced.
Description
Technical Field
The invention relates to a boiler, in particular to a gas multipurpose fuel boiler.
Background
The traditional WNS gas boiler has the following characteristics:
1. the front and rear tube plates of the flashback chamber are difficult to maintain and even impossible to maintain.
2. The volume of the combustion chamber is insufficient, the smoke speed is too fast, and the emission of nitrogen oxide compounds is higher.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the gas multipurpose fuel boiler which has the advantages of fully improved combustion environment, moderate smoke speed, full fuel combustion, low emission of harmful substances and environmental protection.
The invention aims to solve the technical problems by adopting the following technical scheme, and the gas multipurpose fuel boiler comprises a boiler barrel and a combustion chamber, wherein a burner interface is arranged on the front surface of the combustion chamber, and a maintenance port is arranged on the side wall of the combustion chamber, and the gas multipurpose fuel boiler is characterized in that:
the boiler barrel comprises a middle boiler barrel body, a front tube plate and a rear tube plate are respectively arranged at the front end and the rear end of the middle boiler barrel body, a plurality of boiler barrel inner smoke pipes which are communicated with the front tube plate and the rear tube plate are arranged in the boiler barrel, and the inner smoke pipes form a three-return flue;
a front smoke box is arranged in front of the front tube plate, a rear smoke outlet is arranged at the rear of the rear tube plate,
the combustion chamber comprises a left lower longitudinal header pipe, a right lower longitudinal header pipe, a left upper longitudinal header pipe and a right upper longitudinal header pipe which are arranged below the boiler barrel side by side, wherein the front ends and the rear ends of the left lower longitudinal header pipe and the right lower longitudinal header pipe are respectively connected through a front lower transverse header and a rear lower transverse header to form a bottom frame, the front ends and the rear ends of the left upper longitudinal header pipe and the right upper longitudinal header pipe are respectively connected through a front upper transverse header and a rear upper transverse header to form an upper frame, the left lower longitudinal header pipe and the right lower longitudinal header pipe are connected through densely distributed lower wall pipes, the left upper longitudinal header pipe and the right upper longitudinal header pipe are connected through densely distributed ceiling pipes, adjacent ceiling pipes are connected through fin welding, and a channel between the lower wall pipe and the ceiling pipes forms a first return flue of the combustion chamber; the channel between the ceiling pipe and the boiler barrel forms a second return flue of the combustion chamber;
a smoke passing port for allowing smoke to rise from the first return flue to the second pass flue is reserved at the ceiling pipe close to the rear upper transverse header,
the front lower transverse header is connected with the front upper transverse header upwards through a front wall pipe, the pipe pipes of the front wall pipe are connected through fins to form a front wall of a first return flue, and a burner interface is arranged on the front wall;
the rear lower transverse header is connected with the rear upper transverse header upwards through a rear lower wall pipe, and the pipe pipes of the rear lower wall pipe are connected through fins to form a rear wall of the first return flue;
the left and right lower longitudinal header pipes are upwards connected with the left and right upper longitudinal header pipes through left and right lower wall pipes respectively, and the left and right lower wall pipes and the right lower wall pipes are connected through fins to form the left and right side walls of the first return flue;
the left upper longitudinal header pipe and the right upper longitudinal header pipe are upwards connected with the boiler barrel through a left upper outer wall pipe and a right upper outer wall pipe, and the left upper outer wall pipe and the right upper outer wall pipe are connected through fins to form the left side wall and the right side wall of the second return flue;
the rear upper transverse header is connected with the boiler barrel upwards through a rear upper wall pipe, and the pipes of the rear upper wall pipe are connected through fins to form a rear wall of the second return flue;
the front end of the second return flue is directly communicated with the front smoke box to form a smoke passing channel from the second return flue to the third return flue;
the rear ends of the left and right lower longitudinal header pipes are respectively provided with a descending pipe which is directly connected with the boiler barrel upwards; the front ends of the left and right lower longitudinal header pipes are respectively provided with a rising pipe which is directly connected with the boiler barrel.
The technical problem to be solved by the invention can be further solved by the following technical scheme that the down tube is arranged outside the rear wall of the combustion chamber.
The technical problem to be solved by the invention can be further solved by the following technical scheme that the ascending pipes are arranged at two sides of the front wall and upwards penetrate through the front smoke box to be connected with the boiler barrel.
The technical problem to be solved by the invention can be further solved by the following technical scheme that the left and right lower longitudinal header pipes are staggered one by one. The left and right upper longitudinal header pipes are staggered one by one.
The technical problem to be solved by the invention can be further solved by the following technical scheme, wherein the bottom frame and the upper frame are arranged in parallel.
The technical problem to be solved by the invention can be further solved by the following technical scheme that the bottom frame and the upper frame are arranged towards the front of the boiler in a forward crossing way or towards the back of the boiler in a reverse crossing way.
The technical problem to be solved by the invention can be further solved by the following technical scheme, wherein the ceiling pipe and the lower wall pipe are both bent water pipes.
The technical problem to be solved by the invention can be further solved by the following technical scheme that the ceiling pipe and the lower wall pipe both comprise a straight pipe section and a bent pipe section, and the bending angle of the bent pipe section and the straight pipe section is 4-8 degrees.
Compared with the prior art, the invention forms the tube wall through the optimized arrangement of the combustion chamber and the flue and the connection fins between the water passing tube bundle and the tube. The structure is good, the production and the manufacture are convenient, and the construction period is greatly shortened. In addition, the space and the length of the combustion chamber can be arbitrarily increased, so that the combustion environment is fully improved, the smoke speed is moderate, the fuel is fully combusted, the emission of harmful substances is low, and the environment protection requirement is met. Convenient maintenance and no maintenance dead angle. Any part can be quickly maintained. And the maintenance quality is higher. The combustion chamber has large space volume, the fuel can be fully combusted, and the emission of harmful substances is low. The high-temperature flue gas exhausted from the tail of the boiler can be recycled, the temperature of a hearth is increased, the excess air coefficient is reduced, the combustion environment is fully improved, and the flue gas speed is moderate.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front wall block diagram;
FIG. 3 is a rear wall block diagram;
FIG. 4 is a forward parallel block diagram of a combustor frame;
FIG. 5 is an antiparallel block diagram of a combustor frame;
FIG. 6 is a forward cross-over block diagram of a combustor frame;
FIG. 7 is a reverse cross-over block diagram of a combustor frame;
FIG. 8 is a diagram of the overall structure of the boiler.
Detailed Description
Specific embodiments of the invention are described further below in order to facilitate a further understanding of the invention by those skilled in the art without limiting the scope of the claims thereto.
A multipurpose fuel boiler for gas combustion comprises a boiler barrel and a combustion chamber, wherein the front surface of the combustion chamber is provided with a burner interface, the side wall of the combustion chamber is provided with a maintenance port,
the boiler barrel comprises a middle boiler barrel body, a front tube plate and a rear tube plate are respectively arranged at the front end and the rear end of the middle boiler barrel body, a plurality of boiler barrel inner smoke pipes which are communicated with the front tube plate and the rear tube plate are arranged in the boiler barrel, and the inner smoke pipes form a three-return flue;
a front smoke box is arranged in front of the front tube plate, a rear smoke outlet is arranged at the rear of the rear tube plate,
the combustion chamber comprises a left lower longitudinal header pipe, a right lower longitudinal header pipe, a left upper longitudinal header pipe and a right upper longitudinal header pipe which are arranged below the boiler barrel side by side, wherein the front ends and the rear ends of the left lower longitudinal header pipe and the right lower longitudinal header pipe are respectively connected through a front lower transverse header and a rear lower transverse header to form a bottom frame, the front ends and the rear ends of the left upper longitudinal header pipe and the right upper longitudinal header pipe are respectively connected through a front upper transverse header and a rear upper transverse header to form an upper frame, the left lower longitudinal header pipe and the right lower longitudinal header pipe are connected through densely distributed lower wall pipes, the left upper longitudinal header pipe and the right upper longitudinal header pipe are connected through densely distributed ceiling pipes, adjacent ceiling pipes are connected through fin welding, and a channel between the lower wall pipe and the ceiling pipes forms a first return flue of the combustion chamber; the channel between the ceiling pipe and the boiler barrel forms a second return flue of the combustion chamber;
a smoke passing port for allowing smoke to rise from the first return flue to the second pass flue is reserved at the ceiling pipe close to the rear upper transverse header,
the front lower transverse header is connected with the front upper transverse header upwards through a front wall pipe, the pipe pipes of the front wall pipe are connected through fins to form a front wall of a first return flue, and a burner interface is arranged on the front wall;
the rear lower transverse header is connected with the rear upper transverse header upwards through a rear lower wall pipe, and the pipe pipes of the rear lower wall pipe are connected through fins to form a rear wall of the first return flue;
the left and right lower longitudinal header pipes are upwards connected with the left and right upper longitudinal header pipes through left and right lower wall pipes respectively, and the left and right lower wall pipes and the right lower wall pipes are connected through fins to form the left and right side walls of the first return flue;
the left upper longitudinal header pipe and the right upper longitudinal header pipe are upwards connected with the boiler barrel through a left upper outer wall pipe and a right upper outer wall pipe, and the left upper outer wall pipe and the right upper outer wall pipe are connected through fins to form the left side wall and the right side wall of the second return flue;
the rear upper transverse header is connected with the boiler barrel upwards through a rear upper wall pipe, and the pipes of the rear upper wall pipe are connected through fins to form a rear wall of the second return flue;
the front end of the second return flue is directly communicated with the front smoke box to form a smoke passing channel from the second return flue to the third return flue;
the rear ends of the left and right lower longitudinal header pipes are respectively provided with a descending pipe which is directly connected with the boiler barrel upwards; the front ends of the left and right lower longitudinal header pipes are respectively provided with a rising pipe which is directly connected with the boiler barrel.
The downcomer is disposed outside the rear wall of the combustor.
The rising pipe is arranged at two sides of the front wall and upwards penetrates through the front smoke box to be connected with the boiler barrel.
The left and right lower longitudinal header pipes are staggered one by one. The left and right upper longitudinal header pipes are staggered one by one.
The bottom frame and the upper frame are arranged in parallel.
Or the bottom frame and the upper frame are arranged towards the front of the boiler in a forward crossing way or towards the back of the boiler in a reverse crossing way.
The ceiling pipe and the lower wall pipe are both bent water pipes. The ceiling pipe and the lower wall pipe comprise straight pipe sections and bent pipe sections, and the bending angle of the bent pipe sections and the straight pipe sections is 4-8 degrees.
The structure of the gas multipurpose fuel boiler body is composed of the following parts, as shown in the figure:
the novel boiler comprises a base 1, a front lower transverse header 2, a ceiling pipe 3, a front upper transverse header 4, left and right upper outer wall pipes 5, a front smoke box outer door cover 6, a front smoke box 7, a boiler barrel inner smoke pipe 8, a front pipe plate 9, a packaging frame 10, a pressure gauge pipe seat 11, a lifting lug 12, a manhole device 13, a safety valve seat 14, a water inlet pipe seat 15, a water level gauge 16, an overflow pipe 17, a rear pipe plate 18, a boiler barrel 19, a rear smoke outlet 20, a rear upper transverse header 21, left and right upper longitudinal header pipes 22, left and right descending pipes 23, a rear lower transverse header 24, left and right lower longitudinal header pipes 25, lower wall pipes 26, left and right ascending pipes 27, left and right lower wall pipes 28, a front wall pipe 29, a rear upper wall pipe 30 and a rear lower wall pipe 31.
The boiler of the present invention can use a variety of fuels:
combustible natural gas fuel, combustible alcohol-based fuel (methanol fuel), combustible biogas fuel, combustible biomass pellet fuel, combustible firewood fuel, or other fuels. When the fuel is replaced, the structure of the boiler body does not need to be changed. When the fuel is replaced, a smoke purifying device is added to meet the environmental protection requirement. When the fuel is natural gas, the boiler equipment does not need to be purchased again, so that the equipment investment is saved.
Design description:
the invention relates to a gas multipurpose fuel boiler, which is characterized in that steel pipes used for a combustion chamber framework at the lower part of a boiler barrel are all provided with bending angles in a structural form, so that a quasi-elastic structure is ensured.
The upper boiler barrel consists of a barrel body, a front tube plate and a rear tube plate end enclosure.
The upper part of the boiler barrel is provided with a safety valve tube seat, an air outlet tube seat, a pressure gauge tube seat, a manhole and a water inlet tube seat. Lifting lugs for lifting. The front end of the lower part of the boiler barrel is provided with a rising pipe, the rear end of the lower part is provided with a sewage pipe seat, and the lower part is provided with a falling pipe. The left and right symmetrical positions of the front end of the boiler barrel are provided with water level meter tube seats.
A smoke tube is arranged in the boiler barrel. The front end is inserted into and connected with the front tube plate seal head, and the rear end is inserted into and connected with the rear tube plate seal head.
The left and right sides of the boiler barrel are connected by a left and right upper outer wall bent water pipe, the upper part is connected with the boiler barrel, the lower part is connected with a left and right longitudinal upper header pipe, and the upper parts of the left and right outer walls of the sealed boiler are formed by fin welding connection between the pipes of the left and right outer wall bent water pipe. And a drain pipe is arranged at the lower part of the rear end of the upper header pipe longitudinally leftwards and rightwards.
The inner sides of the header pipes in the left and right longitudinal directions are welded and connected by a bent water pipe with the lower end of 4-8 degrees to form a ceiling pipe. And the axial direction of the ceiling pipe has an ascending angle of 4-8 degrees. And a blow-off pipe seat is arranged at the lower part of the rear ends of the upper header pipes longitudinally left and right.
The ceiling tubes are arranged from the rear end to the front, fins are not arranged among the tubes, and the ceiling tubes are a return smoke outlet, a two-return smoke inlet and fins are arranged all the way forward to form a closed combustion chamber top.
The lower parts of the left and right longitudinal upper header pipes are welded by bent water pipes (the bent water pipes are not arranged at the positions of the left and right maintenance doors), fins are arranged among the pipes, and the lower parts of the left and right outer walls of the closed boiler are formed.
Symmetrical maintenance doors are arranged at the left and right maintenance doors, and the upper and lower neutral parts of the maintenance doors are filled and sealed by refractory materials after the bracing members are welded.
Maintaining the inner side of the door aperture ring, pouring a fireproof heat insulation layer after welding the bracing member,
in the middle of the refractory heat insulation layer in the maintenance door aperture ring, a movable refractory filler block is arranged to prevent high temperature in the hearth from radiating outwards, thereby increasing the heat insulation effect.
The inner side of the maintenance door cover is provided with refractory filler with a certain thickness, so that the heat insulation effect is ensured.
The lower part of the rear end of the boiler barrel is connected with the upper part of the rear upper transverse header by a bent water pipe to form the upper part of the rear wall of the boiler.
The lower part of the rear upper transverse header and the upper part of the rear lower transverse header are connected by a bent water pipe to form the lower part of the rear wall of the boiler.
The lower part of the front upper transverse header, the upper part of the front lower transverse header are provided with bent water pipes, and fins are arranged among the pipes of the bent water pipes. Forming a front wall.
And burner interfaces are arranged at the symmetrical positions of the middle part of the front wall pipe left and right and the upper and lower parts. And after the bracing members are welded on the upper and lower neutral parts of the burner interface, filling and pouring are carried out by using refractory materials, so that the sealing is ensured.
The lower part of the tail part of the boiler barrel is provided with a left and a right symmetrical downcomers at the upper part of the lower header pipe at the inner side of the lower header pipe at the left and the right. To ensure boiler water circulation.
The front rising pipe is arranged at the lower part of the forefront end of the boiler barrel and at the upper part of the longitudinal left and right lower header pipes at the center left and right symmetrical positions. And is perpendicular to the longitudinal left and right lower header pipes.
The front end of the boiler barrel is provided with a door cover which is convenient to disassemble at the front end of the front smoke box, and a stretching component is welded at the inner side of the door cover and then is poured by refractory materials to ensure heat insulation.
The inner sides of the lower header pipes on the left and right in the longitudinal direction are welded and connected by a bent water pipe with the lower end of 4-8 degrees, so as to form a lower wall pipe. And the lower wall pipe has an ascending angle of 4-8 degrees in the axial direction. And a blow-off pipe seat is arranged at the outer sides of the rear ends of the left and right lower header pipes.
The lower parts of the left and right lower header pipes are provided with bases which are integrally sealed with the boiler.
A whole block or a plurality of movable supporting plates are arranged at the lower part of the lower wall pipe from the inner side of the longitudinal direction of the base to the inner sides of the front end and the rear end. And a refractory sand filler with a certain thickness is filled between the lower part of the lower wall pipe and the movable supporting plate so as to ensure that no gas leaks out when gas is generated.
When other fuels are combusted, the refractory sand filler can be cleaned out, and the movable supporting plate is removed. The position of the movable supporting plate can be provided with a cast iron fire grate.
And the outside of the front wall, the outside of the rear wall, the outside of the left upper wall, the outside of the right upper wall and the outside of the lower wall of the boiler are integrally poured with refractory cement heat insulation layers, and the outside of the refractory cement heat insulation layers is integrally insulated by rock wool or aluminum silicate blankets.
Constructing an outer package frame and paint.
The flue gas flow is as follows:
the invention relates to a multipurpose fuel boiler, and the flue gas flow is designed into a three-return structure.
The combustion chamber is a return channel. When the boiler operates, high-temperature flame and smoke in the hearth flow backwards to the rear part of the hearth, enter two return channels at the left side, the right side and the lower part of the boiler barrel through an ascending outlet at the tail part of the ceiling pipe, flow forwards through the two return channels and enter the front smoke box. Then the waste gas enters a smoke tube bundle (the smoke tube bundle is a three-return passage) in the boiler barrel through the front smoke box, and finally is discharged from a smoke outlet at the tail part of the boiler and enters an energy-saving device.
The space from the lower part of the boiler barrel to the inner sides of the left and right upper outer wall pipes is a two-return passage.
The tube bundle of the smoke tube in the boiler barrel is a three-return passage.
Boiler operation instructions:
when the natural gas is used as fuel and the boiler is in ignition operation, in order to prevent the residual gas concentration in the hearth from exceeding the standard due to the failure of primary ignition or the failure of multiple ignition or ignition delay and insufficient purging time of the burner, the hearth explosion accident is generated during the re-ignition, and the life safety is endangered.
The invention is initiated:
and an induced draft fan is added at the tail part of the boiler to realize forced ventilation, so that no residual gas exists in the hearth.
Meanwhile, the tail flue is divided into two paths, one path of flue is directly connected with the outlet chimney after the control gate is additionally arranged, and the other path of flue is connected with the outlet chimney through the induced draft fan.
Description of operation:
1. before the boiler is ignited, the tail through flue air door is closed 10 minutes in advance, the induced draft fan is opened for forced ventilation, and after the induced draft fan is in forced ventilation operation for 10 minutes, the burner can be ignited.
2. And after natural gas in a boiler hearth burns normally for 15 minutes, opening a through flue air door, closing a draught fan for forced ventilation, and closing a built-in air door of the draught fan.
3. The boiler needs to be operated strictly according to the program every time when the boiler is started, so that the safe operation of the boiler can be ensured, the exposure accident never occurs, and the property and life safety can be ensured.
Claims (8)
1. The utility model provides a multi-purpose fuel boiler of gas, includes drum, combustion chamber, is equipped with the combustor interface in the front of combustion chamber, is equipped with maintenance mouth at the lateral wall of combustion chamber, its characterized in that:
the boiler barrel comprises a middle boiler barrel body, a front tube plate and a rear tube plate are respectively arranged at the front end and the rear end of the middle boiler barrel body, a plurality of boiler barrel inner smoke pipes which are communicated with the front tube plate and the rear tube plate are arranged in the boiler barrel, and the inner smoke pipes form a three-return flue;
a front smoke box is arranged in front of the front tube plate, a rear smoke outlet is arranged at the rear of the rear tube plate,
the combustion chamber comprises a left lower longitudinal header pipe, a right lower longitudinal header pipe, a left upper longitudinal header pipe and a right upper longitudinal header pipe which are arranged below the boiler barrel side by side, wherein the front ends and the rear ends of the left lower longitudinal header pipe and the right lower longitudinal header pipe are respectively connected through a front lower transverse header and a rear lower transverse header to form a bottom frame, the front ends and the rear ends of the left upper longitudinal header pipe and the right upper longitudinal header pipe are respectively connected through a front upper transverse header and a rear upper transverse header to form an upper frame, the left lower longitudinal header pipe and the right lower longitudinal header pipe are connected through densely distributed lower wall pipes, the left upper longitudinal header pipe and the right upper longitudinal header pipe are connected through densely distributed ceiling pipes, adjacent ceiling pipes are connected through fin welding, and a channel between the lower wall pipe and the ceiling pipes forms a first return flue of the combustion chamber;
the channel between the ceiling pipe and the boiler barrel forms a second return flue of the combustion chamber;
a smoke passing port for allowing smoke to rise from the first return flue to the second pass flue is reserved at the ceiling pipe close to the rear upper transverse header,
the front lower transverse header is connected with the front upper transverse header upwards through a front wall pipe, the pipe pipes of the front wall pipe are connected through fins to form a front wall of a first return flue, and a burner interface is arranged on the front wall;
the rear lower transverse header is connected with the rear upper transverse header upwards through a rear lower wall pipe, and the pipe pipes of the rear lower wall pipe are connected through fins to form a rear wall of the first return flue;
the left and right lower longitudinal header pipes are upwards connected with the left and right upper longitudinal header pipes through left and right lower wall pipes respectively, and the left and right lower wall pipes and the right lower wall pipes are connected through fins to form the left and right side walls of the first return flue;
the left upper longitudinal header pipe and the right upper longitudinal header pipe are upwards connected with the boiler barrel through a left upper outer wall pipe and a right upper outer wall pipe, and the left upper outer wall pipe and the right upper outer wall pipe are connected through fins to form the left side wall and the right side wall of the second return flue;
the rear upper transverse header is connected with the boiler barrel upwards through a rear upper wall pipe, and the pipes of the rear upper wall pipe are connected through fins to form a rear wall of the second return flue;
the front end of the second return flue is directly communicated with the front smoke box to form a smoke passing channel from the second return flue to the third return flue;
the rear ends of the left and right lower longitudinal header pipes are respectively provided with a descending pipe which is directly connected with the boiler barrel upwards; the front ends of the left and right lower longitudinal header pipes are respectively provided with a rising pipe which is directly connected with the boiler barrel.
2. The gas multi-purpose fuel boiler according to claim 1, wherein: the downcomer is disposed outside the rear wall of the combustor.
3. The gas multi-purpose fuel boiler according to claim 1, wherein: the rising pipe is arranged at two sides of the front wall and upwards penetrates through the front smoke box to be connected with the boiler barrel.
4. The gas multi-purpose fuel boiler according to claim 1, wherein: the left and right lower longitudinal header pipes are staggered from one another; the left and right upper longitudinal header pipes are staggered one by one.
5. The gas-fired utility fuel boiler of claim 1 or 4, wherein: the bottom frame and the upper frame are arranged in parallel.
6. The gas-fired utility fuel boiler of claim 1 or 4, wherein: the bottom frame and the upper frame are arranged towards the front of the boiler in a forward crossing way or towards the back of the boiler in a reverse crossing way.
7. The gas multi-purpose fuel boiler according to claim 1, wherein: the ceiling pipe and the lower wall pipe are both bent water pipes.
8. The gas-fired utility fuel boiler of claim 1 or 7, wherein: the ceiling pipe and the lower wall pipe comprise straight pipe sections and bent pipe sections, and the bending angle of the bent pipe sections and the straight pipe sections is 4-8 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884892.XA CN107504472B (en) | 2017-09-26 | 2017-09-26 | Multipurpose fuel boiler using gas as fuel |
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| CN201710884892.XA CN107504472B (en) | 2017-09-26 | 2017-09-26 | Multipurpose fuel boiler using gas as fuel |
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| CN107504472B true CN107504472B (en) | 2023-04-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108469016A (en) * | 2018-03-16 | 2018-08-31 | 仲伟军 | More combustion chamber gas-fired boilers |
| CN109945485A (en) * | 2019-03-25 | 2019-06-28 | 河北省隆盛生物质能源开发有限责任公司 | A kind of biomass charcoal combustion furnace |
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| CN104100961A (en) * | 2014-07-25 | 2014-10-15 | 仲伟军 | Horizontal coal-fired and biomass-fired chain boiler |
| CN207214017U (en) * | 2017-09-26 | 2018-04-10 | 仲伟军 | A kind of combustion gas uses fuel boiler |
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2017
- 2017-09-26 CN CN201710884892.XA patent/CN107504472B/en active Active
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|---|---|---|---|---|
| GB191004667A (en) * | 1910-02-24 | 1911-02-24 | David Stark | Improvements in Steam Generators. |
| CH227937A (en) * | 1941-12-19 | 1943-07-31 | E Witz Henri | Water tube boiler. |
| CN101556076A (en) * | 2009-05-20 | 2009-10-14 | 哈尔滨工业大学 | Large scale water-fire tube hot-water boiler with single drum horizontal vertical spirally corrugated tube |
| CN104100961A (en) * | 2014-07-25 | 2014-10-15 | 仲伟军 | Horizontal coal-fired and biomass-fired chain boiler |
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