CN203980236U - Large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler - Google Patents
Large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler Download PDFInfo
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- CN203980236U CN203980236U CN201420403093.8U CN201420403093U CN203980236U CN 203980236 U CN203980236 U CN 203980236U CN 201420403093 U CN201420403093 U CN 201420403093U CN 203980236 U CN203980236 U CN 203980236U
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- combustion chamber
- drum
- return combustion
- boiler
- flue
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Abstract
The utility model relates to a kind of large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler, comprise drum (5), flue (2), return combustion chamber (3), the second backhaul smoke pipe (4), front smoke box (6), afterbody convection heating surface (7) and burner (1), described flue (2) has two, and two flues (2) are left and right being arranged side by side in drum (5); Described return combustion chamber (3) is oval shape, and return combustion chamber (3) is arranged at two flues (2) rear side, and with two flues (2) intracavity inter-connection; Described burner (1) has two, and two burners (1) are left and right to be arranged side by side in drum (5) front end.The utility model can meet the restrictive condition of standard to the flue diameter of multitubular boiler and wall thickness and return combustion chamber wall thickness, can utilize to the full extent the space in drum again, dwindle boiler appearance and size and horizontal tubular boiler is exerted oneself reach 35t/h(29MW) become possibility.
Description
Technical field
The utility model relates to a kind of horizontal tubular boiler.Belong to heating equipment technical field.
Background technology
Horizontal tubular boiler mostly is quick mounting type, has the advantages such as floor space is little, system is simple, easy for installation, accounts for critical role in industrial boilers in China.But this type of boiler is owing to being subject to GB/T16508 < < drum drum pressure parts intensity to calculate the structural limitations in > >, and exerting oneself of this type of boiler is generally no more than 20t/h(14MW).
Horizontal tubular boiler has the incomparable advantage of water-tube boiler with the structure of its fast-assembling, transportation easily and mounting means.But along with the increase in demand of market to jumbo horizontal boiler, horizontal boiler is to large drum, large flue future development.Boiler belongs to pressure vessel, and drum or flue, along with diameter increases and pressure raising, all mean that the pressure-containing parts wall thickness such as boiler drum, flue increase.Concerning the flue and return combustion chamber that contact with high-temperature flue gas, the senior general that crosses of thickness causes thermal stress excessive, jeopardizes boiler operatiopn safety on the one hand.GB/T16508 < < drum drum pressure parts intensity is calculated 5.2.5 bar regulation " inside diameter D n straight or corrugated flue should not be greater than 1800mm ", " thickness should not be greater than 22mm " in > >; 5.2.5 bar regulation " return combustion chamber drum take thickness should be not more than 35mm ".This has determined no matter what material of use of the horizontal tubular boiler that uses in China, and flue internal diameter can not surpass 1800mm, thickness can not surpass 22mm, and return combustion chamber thickness can not surpass 35mm.On the other hand, concerning burner, single burner need to guarantee that combustion flame and inboard wall of furnace have 50-100mm spacing, and under existing normality condition, double burner and multi-combustor arrange it is the trend of large-scale horizontal tubular boiler.Accompanying drawing 1 is conventional horizontal triple-pass fire-tube boiler flue gas flow schematic diagram.The flue of boiler is connected turning smoke-box with the second backhaul smoke pipe and is called return combustion chamber, flue gas after burning enters return combustion chamber from flue, transfer 180 ° and enter the second backhaul smoke pipe, return combustion chamber is immersed in the water in drum completely, high-temperature flue gas is wherein cooling in time by water, the security of operation of protection return combustion chamber, and on tube sheet (end socket) on return combustion chamber, also need the second backhaul smoke pipe of perforate welding sufficient amount heating surface, flue gas is transferred 180 ° and is entered the 3rd backhaul smoke pipe in drum from the second backhaul smoke pipe outlet in front smoke box, flue gas is emitted the rear smoke box from stove after heat and is discharged.
In sum, horizontal boiler is subject to the restriction of flue diameter, and capacity surpasses 20t/h(14MW) the drum list flue of boiler is difficult to realize, and also has circular return combustion chamber greatly to reduce the space availability ratio of drum, and boiler profile is increased greatly.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, a kind of large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler is provided, can meet drum-type boiler flue and return combustion chamber wall thickness restrictive condition, can utilize to the full extent the space in drum again, dwindle drum diameter, horizontal internal combustion multitubular boiler exerted oneself and reach 35t/h(29MW) become possibility.
The utility model is achieved in that a kind of large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler, comprise drum, flue, return combustion chamber, the second backhaul smoke pipe, front smoke box, afterbody convection heating surface and burner, described drum is horizontal layout, flue, return combustion chamber and the second backhaul smoke pipe are all arranged in drum, flue is placed in bottom in drum, the second backhaul smoke pipe is placed in drum internal upper part, front smoke box is arranged at drum front upper side, the tube side two ends of the second backhaul smoke pipe are connected with front smoke box and return combustion chamber respectively, it is characterized in that: described flue has two, two flues are left in drum, the right side is arranged side by side, described return combustion chamber is oval shape, and return combustion chamber is arranged at two flue rear sides, and with two flue intracavity inter-connections, described burner has two, two left and right being arranged side by side in drum front end of burner.
The utility model large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler, the economizer of afterbody convection heating surface and condenser series connection are placed in the top outer of drum.
The utility model large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler, described flue is in wave shape.
The beneficial effects of the utility model are:
1, dual-furnace-chamber structure has been avoided the restriction of standard to the diameter of single flue and thickness, and each shares the burning load of half two burners, has reduced diameter and the thickness of single flue, meets code requirement in intensity.
2, it is inner that the return combustion chamber that connects side by side same oval shape as two flues of combustion chamber is placed in a circular drum, the in the situation that of proof strength, can at utmost utilize circular drum inner space.Further reduce heavy duty boiler drum diameter and boiler appearance and size.
3, the economizer of heated surface at the end of boiler and condenser are connected in series, and economizer promotes boiler feed water temperature, and the cooling water in condenser tube partly condenses the steam in flue gas, emits the latent heat of vaporization, reduce exhaust gas temperature, promote boiler efficiency.
Accompanying drawing explanation
Fig. 1 is the horizontal fire tube list of traditional three backhaul flue list return combustion chamber boiler longitudinal section cutaway view.
Fig. 2 is the A-A cut-away view of Fig. 1.
Fig. 3 is the utility model large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler longitudinal section cutaway view.
Fig. 4 is the B-B cut-away view of Fig. 2.
Reference numeral in figure:
Burner 1
Flue 2
Return combustion chamber 3
The second backhaul smoke pipe 4
Drum 5
Front smoke box 6
Afterbody convection heating surface 7.
The specific embodiment
Fig. 1 is traditional horizontal fire tube three backhaul list flue list return combustion chamber boilers.Fig. 2 is the A-A cut-away view of Fig. 1.By Fig. 1 and Fig. 2, can be found out, be subject to the restriction of standard, flue diameter can not surpass 1800mm, and thickness can not surpass 22mm; Return combustion chamber thickness can not surpass 35mm.Boiler capacity is difficult to break through 20t/h(14MW).Fig. 3 is the utility model large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler longitudinal section cutaway view.Fig. 4 is the B-B cut-away view of Fig. 2.By Fig. 3 and Fig. 4, can be found out, the utility model large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler, is mainly comprised of burner 1, flue 2, return combustion chamber 3, the second backhaul smoke pipe 4, drum 5, front smoke box 6 and afterbody convection heating surface 7.Described drum 5 is horizontal layout, and flue 2 is in wave shape, and return combustion chamber 3 is oval shape.Flue 2, return combustion chamber 3 and the second backhaul smoke pipe 4 are all arranged in drum 5, flue 2 is placed in the interior bottom of drum 5, flue 2 has two, two flues 2 are interior left and right being arranged side by side of drum 5, return combustion chamber 3 is arranged at two flue 2 rear sides, and with two flue 2 intracavity inter-connections, the second backhaul smoke pipe 4 is placed in drum 5 internal upper parts, front smoke box 6 is arranged at drum 5 front upper sides, the tube side two ends of the second backhaul smoke pipe 4 are connected with front smoke box 6 and return combustion chamber 3 respectively, and the economizer of afterbody convection heating surface 7 and condenser series connection are placed in the top outer of drum.The economizer of afterbody convection heating surface 7 is connected with front smoke box 6.Burner 1 has two, two left and right drum front ends that are placed side by side of burner 1.
Flue gas flow: fuel is after two burner 1 ignition, the flame and the high-temperature flue gas that in two flues 2, produce respectively, jointly enter in same return combustion chamber 3, in return combustion chamber 3, through flue gas out of half-turn, enter the second backhaul smoke pipe 4, then enter the economizer and the condenser that enter afterbody convection heating surface 7 after the backward upper turning of front smoke box 6 of drum 5 front upper sides.The flue gas producing is discharged by condenser.
Carbonated drink flow process: boiler feed water absorbs flue gas heat in the economizer of back-end surfaces 7 and condenser, after being improved, water temperature enters drum 5 inside, through absorbing the flue gas heat of past regurgitation volume in two flues 2, return combustion chamber 3 and the second backhaul smoke pipes 4, the water heating in boiler is become to steam (or hot water) and send boiler use.
In the technical program, it is inner that the return combustion chamber that two flues connect same oval shape is side by side placed in a circular drum, the in the situation that of proof strength, can at utmost utilize circular drum inner space.Further reduce heavy duty boiler drum diameter and boiler appearance and size.Connected economizer and condenser of back-end surfaces simultaneously, except heating boiler feedwater, the water of the low temperature in the condenser pipe in described back-end surfaces 7, utilize the low reduction exhaust gas temperature of its temperature, that the steam containing in flue gas partly condenses, discharge the latent heat of vaporization, when promoting water temperature, improve the whole efficiency of boiler.Meet standard under the prerequisite of the restrictive condition of flue diameter and wall thickness and return combustion chamber wall thickness, utilize to the full extent boiler internal space, dwindle boiler appearance and size, be horizontal tubular boiler exert oneself reach 35t/h(29MW) become possibility.While boiler tail flue gas partial condensation, exhaust gas temperature is low, and boiler efficiency improves greatly.
Claims (3)
1. a large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler, comprise drum (5), flue (2), return combustion chamber (3), the second backhaul smoke pipe (4), front smoke box (6), afterbody convection heating surface (7) and burner (1), described drum (5) is horizontal layout, flue (2), return combustion chamber (3) and the second backhaul smoke pipe (4) are all arranged in drum (5), flue (2) is placed in the interior bottom of drum (5), the second backhaul smoke pipe (4) is placed in drum (5) internal upper part, front smoke box (6) is arranged at drum (5) front upper side, the tube side two ends of the second backhaul smoke pipe (4) are connected with front smoke box (6) and return combustion chamber (3) respectively, it is characterized in that: described flue (2) has two, two flues (2) are left in drum (5), the right side is arranged side by side, described return combustion chamber (3) is oval shape, and return combustion chamber (3) is arranged at two flues (2) rear side, and with two flues (2) intracavity inter-connection, described burner (1) has two, and two burners (1) are left and right to be arranged side by side in drum (5) front end.
2. a kind of large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler according to claim 1, is characterized in that: the economizer of afterbody convection heating surface (7) and condenser series connection are placed in the top outer of drum.
3. a kind of large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler according to claim 1 and 2, is characterized in that: described flue (2) is in wave shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403093.8U CN203980236U (en) | 2014-07-22 | 2014-07-22 | Large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403093.8U CN203980236U (en) | 2014-07-22 | 2014-07-22 | Large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203980236U true CN203980236U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420403093.8U Withdrawn - After Issue CN203980236U (en) | 2014-07-22 | 2014-07-22 | Large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler |
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| CN (1) | CN203980236U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110669A (en) * | 2014-07-22 | 2014-10-22 | 江苏双良锅炉有限公司 | Large horizontal fire-tube double-flue single-reversal-chamber boiler |
| CN106122926A (en) * | 2016-06-20 | 2016-11-16 | 无锡锡能锅炉有限公司 | Corrugated flue for gas-steam boiler |
-
2014
- 2014-07-22 CN CN201420403093.8U patent/CN203980236U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110669A (en) * | 2014-07-22 | 2014-10-22 | 江苏双良锅炉有限公司 | Large horizontal fire-tube double-flue single-reversal-chamber boiler |
| CN104110669B (en) * | 2014-07-22 | 2016-03-30 | 江苏双良锅炉有限公司 | Large-size horizontal fire tube dual-furnace-chamber list return combustion chamber boiler |
| CN106122926A (en) * | 2016-06-20 | 2016-11-16 | 无锡锡能锅炉有限公司 | Corrugated flue for gas-steam boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20160330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |