CN219976363U - Bottom-fired vertical fin tube steam generator - Google Patents
Bottom-fired vertical fin tube steam generator Download PDFInfo
- Publication number
- CN219976363U CN219976363U CN202320785874.7U CN202320785874U CN219976363U CN 219976363 U CN219976363 U CN 219976363U CN 202320785874 U CN202320785874 U CN 202320785874U CN 219976363 U CN219976363 U CN 219976363U
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- China
- Prior art keywords
- steam generator
- finned tube
- shell
- fin tube
- vertical fin
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000003063 flame retardant Substances 0.000 claims abstract description 23
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000779 smoke Substances 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000005855 radiation Effects 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 12
- 239000003546 flue gas Substances 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000011148 porous material Substances 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a bottom-burning vertical finned tube steam generator in the technical field of boilers, which comprises a vertically arranged shell, wherein a water jacket is arranged at the inner bottom of the shell in a surrounding manner, a steam chamber is arranged at the top of the shell, a burner is arranged at the center of the bottom of the shell, a finned tube is arranged along the side wall of the shell in a surrounding manner, the bottom of the finned tube is communicated with the water jacket, the top of the finned tube is communicated with the steam chamber, a flame-retardant sheet is arranged at the outer side of the finned tube in a surrounding manner, and smoke exhaust holes are formed in the flame-retardant sheet. The bottom-burning vertical finned tube steam generator adopts the arrangement at the bottom of the burner, the hearth and the convection heating surface are both finned tube type straight water tubes, flame retardant sheets are arranged at the outer sides of the finned tube type straight water tubes, a large number of heating surfaces can be arranged in a small space, the high-efficiency radiation heat exchange of the hearth is ensured, the high-efficiency and full convection heat exchange is ensured, the overall dimension is greatly reduced under the condition that the thermal efficiency of the body is ensured, and the market competition rate is greatly improved.
Description
Technical Field
The utility model relates to a heating device, in particular to a bottom-fired vertical fin tube steam generator.
Background
Currently, steam generators have tremendous market potential. However, the steam generator in the prior art has the defects of large occupied area, unreasonable internal design, short internal residence time of the flue gas, high exhaust temperature, high content of harmful gases in the flue gas, low thermal efficiency, poor environmental protection and energy saving effects and the like. Along with the development of national economy, the national energy conservation and environmental protection consciousness is improved, and in order to improve living and investment environments, the steam generator must continuously develop to intensification, energy conservation and environmental protection.
Disclosure of Invention
The utility model aims to provide a bottom-fired vertical fin tube steam generator which is compact in structure, convenient to install, higher in thermal efficiency and more environment-friendly.
The purpose of the utility model is realized in the following way: the utility model provides a vertical finned tube steam generator burns at bottom, includes the casing of vertical setting, and the bottom is encircleed in the casing is equipped with the water jacket, the top is equipped with the steam chamber, and casing bottom center is equipped with the combustor, is equipped with the finned tube along the lateral wall ring in the casing, and the finned tube bottom is with water jacket intercommunication, top and steam chamber intercommunication, and the finned tube outside is encircleed and is equipped with fire-retardant piece, is equipped with the exhaust port on the fire-retardant piece.
The bottom-burning vertical finned tube steam generator adopts the arrangement at the bottom of the burner, the hearth and the convection heating surface are both finned tube type straight water tubes, flame retardant sheets are arranged at the outer sides of the finned tube type straight water tubes, a large number of heating surfaces can be arranged in a small space, the high-efficiency radiation heat exchange of the hearth is ensured, the high-efficiency and full convection heat exchange is ensured, and the overall dimension is greatly reduced under the condition of ensuring the thermal efficiency of the body.
As a further improvement of the utility model, the lower part of the steam chamber is provided with the grid pore plate, the upper side of the grid pore plate is provided with the steam homogenizing pore plate, steam-water separation is effectively realized, steam quality is improved, the periphery of the grid pore plate is connected with the sealing plate which vertically and downwardly extends to the bottom of the steam chamber, the outer side of the fin tube is provided with the down tube, the bottom of the down tube is communicated with the water jacket, the top of the down tube is communicated with the steam chamber, and the connecting position is positioned at the outer side of the sealing plate.
As a further improvement of the utility model, one side of the shell is connected with the condenser through the smoke outlet connecting pipe, the condenser comprises a pressure-bearing condensing section arranged on the front side and a normal pressure condensing section arranged on the rear side, the smoke condensing technology is fully utilized, the designed thermal efficiency of the steam generator can reach 102 percent, the steam generator is discharged to the atmosphere through a chimney after fully exchanging heat, and finally the smoke discharging temperature of the boiler is reduced to below 60 ℃.
As a further improvement of the utility model, the cross section of the condenser is in a trapezoid shape with wide front and narrow rear, and the principle of gradual change of the smoke flow cross section is adopted according to different temperature sections, so that the most economical smoke flow rate is ensured.
As a further improvement of the utility model, the water inlet of the normal pressure condensing section is connected with the low-temperature water tank through a circulating pump, the water outlet of the normal pressure condensing section is connected with the high-temperature water tank, the water inlet of the pressure-bearing condensing section is connected with the high-temperature water tank through a boiler water feeding pump, and the water outlet of the pressure-bearing condensing section is connected with the water inlet of the water jacket. Through the water supply system structure, the exhaust gas temperature can be well reduced, so that the steam generator has higher operation efficiency and saves more energy.
As a further improvement of the utility model, the flame-retardant sheet is attached to the outer circumference of the finned tube, so that the heat convection area is furthest increased in the effective space, and the heat convection effect is improved.
As a further improvement of the utility model, the smoke exhaust holes are vertical waist-shaped holes, so that the convection heat exchange efficiency is improved.
As a further improvement of the utility model, the flame-retardant sheet and the finned tube are connected by butt welding, so that the utility model is simple and easy to operate, and vibration does not occur in the heat exchange process.
As a further improvement of the utility model, the bottom of the shell is provided with the supporting legs, so that the water supply system pipeline is conveniently arranged in the space at the bottom of the shell, and the compactness and the safety of the structure are improved.
As a further improvement of the present utility model, the burner adopts a bridged plate type micropore combustion integrated burner. Has the characteristics of high temperature resistance, long service life, simple manufacture, low manufacturing cost, stable combustion, low combustion maintenance cost and the like,effectively enlarge the flame combustion area, realize low flame temperature combustion in the hearth and inhibit NO in the hearth X The amount of production is ensured to be the same as the boiler NO X The discharge concentration was reduced to 30mg/Nm 3 The aim of low nitrogen and environmental protection is finally achieved.
Drawings
FIG. 1 is a schematic view of a bottom-fired vertical fin tube steam generator of the present utility model.
Fig. 2 is a top view of the bottom-fired vertical fin tube steam generator of the present utility model.
FIG. 3 is an expanded schematic view of a flame retardant sheet of the bottom-fired vertical fin tube steam generator of the present utility model.
The device comprises a shell body 1, a water jacket 2, a water inlet 2A, a steam chamber 3, a burner 4, a fin tube 5, a flame-retardant sheet 6, a smoke exhaust hole 7, a grid hole plate 8, a steam homogenizing hole plate 9, a descending tube 10, a pressure-bearing condensing section 11, a water inlet 11A, a water outlet 11B, a normal pressure condensing section 12, a water inlet 12A, a water outlet 12B and a supporting leg 13.
Description of the embodiments
The bottom burning vertical fin tube steam generator shown in fig. 1 to 3 comprises a vertically arranged shell 1, wherein a water jacket 2 is annularly arranged at the bottom in the shell 1, a steam chamber 3 is arranged at the top, and a combustor 4 is arranged at the center of the bottom of the shell 1. The burner 4 adopts a bridged plate type micropore combustion integrated burner 4.
The inner side wall of the shell 1 is provided with a finned tube 5 in a ring manner, the bottom of the finned tube 5 is communicated with the water jacket 2, the top of the finned tube is communicated with the steam chamber 3, and the outer side of the finned tube 5 is provided with a stainless steel flame retardant sheet 6 in a ring manner. The flame retardant sheet 6 is attached to the outer circumference of the finned tube 5 and is connected with the finned tube 5 by butt welding. The flame-retardant sheet 6 is provided with a smoke exhaust hole 7, and the smoke exhaust hole 7 is a vertical waist-shaped hole.
The lower part of the steam chamber 3 is provided with a grid pore plate 8. The upper side of the grid pore plate is provided with a steam-homogenizing pore plate 9. The periphery of the grid pore plate 8 is connected with a sealing plate which vertically and downwardly extends to the bottom of the steam chamber 3, the outer sides of the finned tubes 5 are provided with large-diameter downcomers 10, the bottoms of the downcomers 10 are communicated with the water jackets 2, the tops of the downcomers are communicated with the steam chamber 3, and the connecting positions of the downcomers are located on the outer sides of the sealing plates.
One side of the shell 1 is connected with a condenser through a smoke outlet connecting pipe. The condenser comprises a pressure-bearing condensing section 11 arranged on the front side and an atmospheric condensing section 12 arranged on the rear side. The cross section of the whole condenser is trapezoid with wide front and narrow back. The water inlet 12A of the normal pressure condensing section 12 is connected with a low-temperature water tank through a circulating pump, the water outlet 12B of the normal pressure condensing section 12 is connected with the high-temperature water tank, the water inlet 11A of the pressure-bearing condensing section 11 is connected with the high-temperature water tank through a boiler water supply pump, and the water outlet 11B of the pressure-bearing condensing section 11 is connected with the water jacket water inlet 2A. Through the water supply system structure, the exhaust gas temperature can be well reduced, so that the steam generator has higher operation efficiency and saves more energy. The bottom of the shell 1 is provided with the supporting legs 13, so that a water supply system pipeline is conveniently arranged in the bottom space of the shell 1, and the compactness and the safety of the structure are improved.
The flow of the flue gas and the medium of the bottom-fired vertical finned tube steam generator of the embodiment is as follows:
the flue gas flow is as follows: fuel-burner-hearth-finned tube-smoke outlet connecting tube-condenser pressure-bearing condensing section-condenser normal pressure condensing section-chimney
Steam-water system: softening water supply, low-temperature water tank, circulating pump, normal pressure condensing section of condenser, high-temperature water tank, boiler water supply pump, pressure-bearing condensing section of condenser, boiler water inlet, boiler body, saturated steam and heat user.
According to the bottom-fired vertical fin tube steam generator, a fin type straight water tube design technology with stainless steel flame retardant sheets is adopted, the flame retardant sheets are tightly connected with stainless steel fins by adopting a butt welding technology, vibration cannot occur, smoke discharging small holes required for guaranteeing the flow rate of smoke are arranged on the stainless steel flame retardant sheets, and the high-efficiency radiation heat exchange of a hearth is guaranteed, and meanwhile the high-efficiency and more sufficient convection heat exchange can be guaranteed; and the large-diameter down tube is adopted, so that the reliability of water circulation is well ensured, heat exchange is smoother, and the heat exchange effect is improved. The finned tube with the stainless steel flame-retardant sheet is used for heat exchange, butt welding of the flame-retardant sheet and the finned tube is simple and easy, production cost is greatly saved, and meanwhile, the heat convection area in a smaller flue space can be greatly increased. High-temperature flue gas in the hearth absorbs heat (finned tubes) through inner circumferential fins of the hearth, heat is exchanged through convection of outer circumferential fins, then enters a condenser pressure-bearing section and a normal pressure section through smoke exhaust holes arranged on a stainless steel flame retardant sheet through a tail smoke outlet, the principle of gradual change of the flue gas flow section is adopted according to different temperature sections, the most economical flue gas flow rate is ensured, the flue gas is discharged to the atmosphere through a chimney after full heat exchange, and finally the flue gas temperature of the boiler is reduced to below 60 ℃, so that the flue gas condensation technology is fully utilized, and the design thermal efficiency of the steam generator is as high as 102%. In the whole running process of the boiler, according to the oxygen content in the flue gas, the bridging microporous ultralow nitrogen burner automatically adjusts the air and fuel ratio, timely controls the ultralow nitrogen emission of the NOx in the flue gas of the boiler, and finally realizes the effects of low nitrogen, high efficiency and energy conservation.
In summary, the bottom-fired vertical fin tube steam generator of the embodiment greatly reduces the overall dimension under the condition of ensuring the thermal efficiency of the body, adopts the arrangement of the bottom of the burner, adopts fin tube type straight water pipes for the hearth and the convection heating surface, can greatly arrange the heating surfaces in a smaller space, and greatly reduces the smoke temperature of the outlet of the boiler; the boiler furnace adopts a sealed angle steel film type wall structure, and the water pipe does not need to be bent. The tail part is additionally provided with a pressure-bearing condenser and normal pressure condenser integrated structure, and the water supply pump is connected with the pressure-bearing condenser and the water supply system structure of the steam generator, and meanwhile, the normal pressure condenser and the water tank circulating system can well reduce the exhaust gas temperature, so that the generator has higher operation efficiency and saves more energy. Because the condenser is connected with the boiler as a whole, the structure is compact and attractive, the external dimension is smaller, the occupied area is small, the manufacturing and transportation costs are saved, the initial investment cost of a user is well reduced, the thermal efficiency of the boiler is not influenced, and the market competition rate is greatly improved.
The utility model is not limited to the above embodiments, and based on the technical solution disclosed in the utility model, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the utility model.
Claims (10)
1. The utility model provides a vertical fin tube steam generator burns at bottom, includes the casing of vertical setting, its characterized in that: the inner bottom of the shell is annularly provided with a water jacket, the top of the shell is provided with a steam chamber, the center of the bottom of the shell is provided with a burner, the inner edge of the shell is annularly provided with a finned tube, the bottom of the finned tube is communicated with the water jacket, the top of the finned tube is communicated with the steam chamber, the outer side of the finned tube is annularly provided with a flame-retardant sheet, and the flame-retardant sheet is provided with a smoke exhaust hole.
2. The bottom-fired vertical fin tube steam generator of claim 1, wherein: the steam chamber lower part is equipped with the grid orifice plate, grid orifice plate upside is equipped with even vapour orifice plate, grid orifice plate periphery is connected with the shrouding that extends perpendicularly downwardly to the steam chamber bottom, the fin tube outside is equipped with the downcomer, downcomer bottom and water jacket intercommunication, top and steam chamber intercommunication and hookup location are located the shrouding outside.
3. The bottom-fired vertical fin tube steam generator of claim 1, wherein: one side of the shell is connected with a condenser through a smoke outlet connecting pipe, and the condenser comprises a pressure-bearing condensing section arranged on the front side and a normal pressure condensing section arranged on the rear side.
4. The bottom-fired vertical fin tube steam generator of claim 3, wherein: the cross section of the condenser is trapezoid with wide front and narrow rear.
5. The bottom-fired vertical fin tube steam generator of claim 3, wherein: the water inlet of the normal pressure condensing section is connected with the low-temperature water tank through a circulating pump, the water outlet of the normal pressure condensing section is connected with the high-temperature water tank, the water inlet of the pressure-bearing condensing section is connected with the high-temperature water tank through a boiler water supply pump, and the water outlet of the pressure-bearing condensing section is connected with the water jacket water inlet.
6. The bottom-fired vertical fin tube steam generator of claim 1, wherein: and the flame retardant sheet is attached to the outer circumference of the finned tube.
7. The bottom-fired vertical fin tube steam generator of claim 1, wherein: the smoke exhaust holes are vertical waist-shaped holes.
8. The bottom-fired vertical fin tube steam generator of any of claims 1-7, wherein: the flame retardant sheet is connected with the fin tube through butt welding.
9. The bottom-fired vertical fin tube steam generator of any of claims 1-7, wherein: the bottom of the shell is provided with supporting legs.
10. The bottom-fired vertical fin tube steam generator of any of claims 1-7, wherein: the burner adopts a bridging plate type micropore combustion integrated burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320785874.7U CN219976363U (en) | 2023-04-11 | 2023-04-11 | Bottom-fired vertical fin tube steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320785874.7U CN219976363U (en) | 2023-04-11 | 2023-04-11 | Bottom-fired vertical fin tube steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219976363U true CN219976363U (en) | 2023-11-07 |
Family
ID=88578019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320785874.7U Active CN219976363U (en) | 2023-04-11 | 2023-04-11 | Bottom-fired vertical fin tube steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219976363U (en) |
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2023
- 2023-04-11 CN CN202320785874.7U patent/CN219976363U/en active Active
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