CN201706927U - Shell-and-tube exhaust-heat boiler with spiral flat tube - Google Patents
Shell-and-tube exhaust-heat boiler with spiral flat tube Download PDFInfo
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- CN201706927U CN201706927U CN2010202518101U CN201020251810U CN201706927U CN 201706927 U CN201706927 U CN 201706927U CN 2010202518101 U CN2010202518101 U CN 2010202518101U CN 201020251810 U CN201020251810 U CN 201020251810U CN 201706927 U CN201706927 U CN 201706927U
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- flat tube
- heat boiler
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Abstract
The utility model discloses a shell-and-tube exhaust-heat boiler with a spiral flat tube. The boiler comprises a shell, wherein the shell is provided with a smoke inlet, a smoke outlet, a water inlet, a steam outlet and an outer head cover; a front end channel box, a fixed tube sheet, a baffle plate, a floating tube sheet and a floating head cover are arranged in the shell; and a spiral flat tube bundle which can allow fluid inside and outside the tube to generate turbulent flow and increase a heat exchange surface is fixedly connected between the fixed tube sheet and the floating tube sheet. The shell-and-tube exhaust-heat boiler with the spiral flat tube of the utility model has the advantages of high heat utilization ratio, compact structure, small size, convenient hosting, material saving, low manufacturing cost and wide application to industries such as petrochemical industry, electric power, steel and iron, nonferrous metals, cement, building materials, light industry, coal and the like.
Description
Technical field
The utility model relates to the boiler applications field, and shell-and-tube waste heat boiler particularly specifically is fitted with the shell-and-tube waste heat boiler of spiral flat tube.
Background technology
The Chinese government plans the year two thousand twenty with carbon emission amount minimizing 40%-45% at present, and each big industrial enterprise all is faced with huge reduction of discharging pressure.Every policy that helps energy-saving and emission-reduction is being carried out by government, and wherein heat recovery is as a kind of effective way that improves efficiency of energy utilization, and country has put into effect multinomial policy and encouraged enterprise to carry out heat recovery.Under the promotion energetically of energy-saving and environmental protection policy, the demand rapid growth of waste heat boiler, market capacity is huge.Domestic waste heat boiler corporate sales volume was about 3,400,000,000 yuan in 2008, estimated that the domestic waste heat boiler market capacity of the five-year will reach 28,000,000,000 yuan, and about 40,000,000,000 yuan of international market amounts to about 68,000,000,000 yuan, and the waste heat boiler industry market has a extensive future.China's residual heat resources are very abundant, particularly in industries such as oil, petrochemical industry, iron and steel, coloured, chemical industry, cement, building materials, light industry and coals, residual heat resources account for the 17%-67% of fuel consumption total amount, and wherein the residual heat resources of recyclable utilization account for 60% of waste heat total resources.At present China's residual heat resources proportion of utilization is low, and large-scale iron and steel enterprise utilization rate of waste heat is about 30%-50%, and other industry is lower, the UTILIZATION OF VESIDUAL HEAT IN efficient tool potentiality that have greatly improved.Waste heat boiler kind in the market is a lot, includes steam bubble, bubble and heat exchanger, and its design is each has something to recommend him.Heat exchanger is the critical piece of thermal energy exchange, and the layout of pipe fitting, design all can have a strong impact on the utilization of heat energy, the heat energy utilization rate of competence exertion maximum how, and saving cost is the technical problems to be solved in the utility model.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned prior art present situation, and a kind of heat energy utilization rate height that has is provided, and compact conformation, volume are little, advantages such as lifting is convenient, save material simultaneously, cost is low, and the shell-and-tube waste heat boiler that is fitted with spiral flat tube easy for installation.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the shell-and-tube waste heat boiler that is fitted with spiral flat tube, comprise housing, described housing is provided with gas approach, exhanst gas outlet, water inlet and steam (vapor) outlet and outer skull, be provided with front end bobbin carriage, fixed tube sheet, deflection plate, floating tubesheet and floating head in its housing, be fixedly connected with between described fixed tube sheet and the floating tubesheet and can make in the pipe and extratubal fluid turbulization and increase the spiral flat tube tube bank of heat-exchange surface.
For optimizing technique scheme, the concrete measure of taking also comprises:
Above-mentioned spiral flat tube tube bank is made up of many spiral flat tubes, and described spiral flat tube tube bank and fixed tube sheet and floating tubesheet adopt the mode of expanded joint or welding or expanded and welded tube joint and usefulness to be connected to a fixed.
Above-mentioned spiral flat tube has the spire that is provided with at interval, and spire is along the cross section of the arbitrary particle of the axis ellipse or the Long Circle of gradual change in the shape of a spiral.
The spire that above-mentioned interval is provided with is left-handed or dextrorotation portion, described spire be spaced apart changeover portion with cross section ovalize or oblong straight tube or bend pipe.
The spire compound mode that above-mentioned interval is provided with is left-handed and dextrorotation portion is alternately distributed mutually or for dextrorotation portion and left-handed are alternately distributed mutually, and it replaces mutually is spaced apart the changeover portion with cross section ovalize or oblong straight tube or bend pipe.
Above-mentioned exhanst gas outlet is arranged on the top of housing near front end, and described gas approach is arranged on the housing bottom relative with exhanst gas outlet.
Five road deflection plates are installed in the above-mentioned housing, and deflection plate is fitted between fixed tube sheet and the floating tubesheet, and described spiral flat tube tube bank is passed deflection plate and is connected with floating tubesheet with fixed tube sheet.
Compared with prior art, the shell-and-tube waste heat boiler that is fitted with spiral flat tube of the present utility model is equipped with the spiral flat tube that twists moulding after flattening in the shell; Spiral flat tube is arranged at intervals with spire, and spire is along the cross section of the arbitrary particle of the axis ellipse or the Long Circle of gradual change in the shape of a spiral, and the pipe inner flow passage is because of the distortion of pipe shape in the shape of a spiral.The surface area of spiral spiral flat tube tube cavity wall and pipe periphery wall wants big many compared with the straight tube of standard, makes the heat exchange area that is heated increase greatly, and the heated medium heat exchanger effectiveness that is positioned at the spiral flat tube tube cavity improves greatly.Be in helical flow in the pipe outside the pipe, it is vertically mobile that fluid is in pipe and outside the pipe substantially, is attended by horizontal screw simultaneously, and the periodically-varied of this flow velocity and the flow direction has been strengthened the axial mixing and the turbulivity of fluid, thereby has strengthened heat conductive efficiency.The shell-and-tube waste heat boiler that is fitted with spiral flat tube of the present utility model, it is little to have volume, and the cost cost is low, heat energy utilization rate height, and be easy to install advantages such as enforcement, can be widely used in industries such as petrochemical industry, electric power, iron and steel, coloured, chemical industry, cement, building materials, light industry, coal.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of spiral flat tube among Fig. 1;
Fig. 3 is the G place zoomed-in view among Fig. 2;
Fig. 3 a is that A-A among Fig. 3 is to cutaway view;
Fig. 3 b is that B-B among Fig. 3 is to cutaway view;
Fig. 3 c is that C-C among Fig. 3 is to cutaway view;
Fig. 3 d is that D-D among Fig. 3 is to cutaway view;
Fig. 4 is the F place zoomed-in view among Fig. 2;
Fig. 4 a is that A-A among Fig. 4 is to cutaway view;
Fig. 4 b is that B-B among Fig. 4 is to cutaway view;
Fig. 4 c is that C-C among Fig. 4 is to cutaway view;
Fig. 4 d is that D-D among Fig. 4 is to cutaway view;
Fig. 5 is that E-E among Fig. 2 is to cutaway view;
Fig. 6 is the assembly structure schematic diagram of spiral flat tube tube bank among Fig. 1;
Fig. 7 is the operation principle schematic diagram of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is to Figure 7 shows that structural representation of the present utility model.
Reference numeral wherein is: spiral flat tube 1, left-handed 1c, the 1d of dextrorotation portion, changeover portion 1e, gas approach 2, exhanst gas outlet 3, water inlet 4, steam (vapor) outlet 5, front end bobbin carriage 6, fixed tube sheet 7, deflection plate 8, floating tubesheet 9, housing 10, floating head 11, spiral flat tube tube bank 12, outer skull 13.
Extremely shown in Figure 7 as Fig. 1, the shell-and-tube waste heat boiler that is fitted with spiral flat tube of the present utility model, comprise housing 10, described housing 10 is provided with gas approach 2, exhanst gas outlet 3, water inlet 4 and steam (vapor) outlet 5 and outer skull 13, wherein: be provided with front end bobbin carriage 6, fixed tube sheet 7, deflection plate 8, floating tubesheet 9 and floating head 11 in the housing 10, be fixedly connected with between described fixed tube sheet 7 and the floating tubesheet 9 and can make in the pipe and extratubal fluid turbulization and increase the spiral flat tube tube bank 12 of heat-exchange surface.Spiral flat tube tube bank 12 is made up of many spiral flat tubes 1, spiral flat tube 1 is a kind of novel heat exchange element, it is parent tube with the pipe, distortion moulding after flattening, as shown in Figure 2, spiral flat tube 1 has the spire that is provided with at interval, spire can be left-handed 1c or the 1d of dextrorotation portion, certain optimal compound mode is that left-handed 1c and the 1d of dextrorotation portion are alternately distributed mutually, or for the 1d of dextrorotation portion and left-handed 1c are alternately distributed mutually, adopts the shell-and-tube waste heat boiler of spiral flat tube, because fluid is in the spiral rotation mode and flows inside and outside pipe, change and strengthened the axial mixing and the turbulivity of fluid, thereby strengthened heat transfer, have higher heat utilization efficiency.
Be left-handed 1c of spiral flat tube 1 and the zoomed-in view of the 1d of dextrorotation portion as shown in Figure 3, Figure 4.Fig. 3 a to Fig. 3 d is the cutaway view among Fig. 3, as can be seen, the cross section at left-handed any place of 1c all is ellipse or Long Circle from cutaway view, and is same, Fig. 4 a to Fig. 4 d is the cutaway view among Fig. 4, and the cross section at any place of the 1d of dextrorotation portion also all is ellipse or Long Circle.
At interval the spire that is provided be spaced apart changeover portion 1e, as shown in Figure 5, changeover portion 1e is cross section ovalize or oblong straight tube or bend pipe in the present embodiment, spire is connected by changeover portion 1e.
The shell-and-tube waste heat boiler that is fitted with spiral flat tube of the present utility model, exhanst gas outlet 3 is arranged on the top of housing 10 near front end, gas approach 2 is arranged on the relative bottom of housing 10 and exhanst gas outlet 3, five road deflection plates 8 are installed in the housing 10, deflection plate 8 is fitted between fixed tube sheet 7 and the floating tubesheet 9, and spiral flat tube tube bank 12 is passed deflection plate 8 and is connected with floating tubesheet 9 with fixed tube sheet 7.Spiral flat tube tube bank 12 adopts the mode of expanded joint or welding or expanded and welded tube joint and usefulness to be connected to a fixed with fixed tube sheet 7 and floating tubesheet 9.Housing 10 adopts welding manner with floating tubesheet 9; Fixed tube sheet 7 and bobbin carriage link into an integrated entity by flange.
During work, water enters shell through feedwater piping, and water absorbs heat in shell and forms steam water interface in tedge arrival drum, by drum water, vapour is separated.The water of separating forms the water circulation in down-comer is got back to shell; The steam of separating is delivered to upstream device through jet chimney and is used, as is used for steam turbine power generation, perhaps uses for the heating of producing, live.
Hot flue gas enters spiral flat tube tube bank 12 through gas approach 2, leaves boiler by exhanst gas outlet 3 and goes upstream device to use or arrange to atmosphere.
The shell-and-tube waste heat boiler that is fitted with spiral flat tube of the present utility model, be fitted with spiral flat tube, make the outer helical flow that is in of pipe in the pipe, it is vertically mobile that fluid is in pipe and outside the pipe substantially, be attended by horizontal screw simultaneously, the periodically-varied of this flow velocity and the flow direction has been strengthened the axial mixing and the turbulivity of fluid, thereby has strengthened heat transfer.The experimental study surface: the inside and outside film heat transfer coefficient of spiral flat tube increases substantially than the inside and outside film heat transfer coefficient of light pipe, and is the most obvious when Reynolds number is low, reaches 2-4 doubly, along with the increase effect of Reynolds number reduces slightly, also can improve heat transfer coefficient usually more than 1.5 times.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (7)
1. be fitted with the shell-and-tube waste heat boiler of spiral flat tube, comprise housing (10), described housing (10) is provided with gas approach (2), exhanst gas outlet (3), water inlet (4) and steam (vapor) outlet (5) and outer skull (13), it is characterized in that: be provided with front end bobbin carriage (6), fixed tube sheet (7), deflection plate (8), floating tubesheet (9) and floating head (11) in the described housing (10), be fixedly connected with between described fixed tube sheet (7) and the floating tubesheet (9) and can make in the pipe and extratubal fluid turbulization and increase the spiral flat tube tube bank (12) of heat-exchange surface.
2. the shell-and-tube waste heat boiler that is fitted with spiral flat tube according to claim 1, it is characterized in that: described spiral flat tube tube bank (12) is made up of many spiral flat tubes (1), and described spiral flat tube tube bank (12) adopts the mode of expanded joint or welding or expanded and welded tube joint and usefulness to be connected to a fixed with fixed tube sheet (7) and floating tubesheet (9).
3. the shell-and-tube waste heat boiler that is fitted with spiral flat tube according to claim 2 is characterized in that: described spiral flat tube (1) has the spire that is provided with at interval, and spire is along the cross section of the arbitrary particle of the axis ellipse or the Long Circle of gradual change in the shape of a spiral.
4. the shell-and-tube waste heat boiler that is fitted with spiral flat tube according to claim 3, it is characterized in that: the spire that described interval is provided with is left-handed (1c) or dextrorotation portion (1d), described spire be spaced apart changeover portion (1e) with cross section ovalize or oblong straight tube or bend pipe.
5. the shell-and-tube waste heat boiler that is fitted with spiral flat tube according to claim 3, it is characterized in that: the spire compound mode that described interval is provided with is that left-handed (1c) and dextrorotation portion (1d) are alternately distributed mutually, or for dextrorotation portion (1d) and left-handed (1c) are alternately distributed mutually, it replaces mutually is spaced apart the changeover portion (1e) with cross section ovalize or oblong straight tube or bend pipe.
6. according to the described shell-and-tube waste heat boiler that is fitted with spiral flat tube of the arbitrary claim of claim 1 to 5, it is characterized in that: described exhanst gas outlet (3) is arranged on the top of housing (10) near front end, and described gas approach (2) is arranged on housing (10) and the relative bottom of exhanst gas outlet (3).
7. the shell-and-tube waste heat boiler that is fitted with spiral flat tube according to claim 6, it is characterized in that: five road deflection plates (8) are installed in the described housing (10), deflection plate (8) is fitted between fixed tube sheet (7) and the floating tubesheet (9), and described spiral flat tube tube bank (12) is passed deflection plate (8) and is connected with floating tubesheet (9) with fixed tube sheet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202518101U CN201706927U (en) | 2010-07-01 | 2010-07-01 | Shell-and-tube exhaust-heat boiler with spiral flat tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202518101U CN201706927U (en) | 2010-07-01 | 2010-07-01 | Shell-and-tube exhaust-heat boiler with spiral flat tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201706927U true CN201706927U (en) | 2011-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202518101U Expired - Fee Related CN201706927U (en) | 2010-07-01 | 2010-07-01 | Shell-and-tube exhaust-heat boiler with spiral flat tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201706927U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457331A (en) * | 2014-12-11 | 2015-03-25 | 无锡化工装备股份有限公司 | Heat exchanger of twisted tube |
| CN114992614A (en) * | 2022-06-21 | 2022-09-02 | 佛山市丰川节能科技有限公司 | Steam regeneration device, system and method for waste gas recovery |
-
2010
- 2010-07-01 CN CN2010202518101U patent/CN201706927U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457331A (en) * | 2014-12-11 | 2015-03-25 | 无锡化工装备股份有限公司 | Heat exchanger of twisted tube |
| CN114992614A (en) * | 2022-06-21 | 2022-09-02 | 佛山市丰川节能科技有限公司 | Steam regeneration device, system and method for waste gas recovery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20180701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |