CN113503530A - Heat exchange assembly and steam generator using same - Google Patents
Heat exchange assembly and steam generator using same Download PDFInfo
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- CN113503530A CN113503530A CN202110814158.2A CN202110814158A CN113503530A CN 113503530 A CN113503530 A CN 113503530A CN 202110814158 A CN202110814158 A CN 202110814158A CN 113503530 A CN113503530 A CN 113503530A
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- heat exchange
- flue gas
- combustion cylinder
- gas outlet
- pipe
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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
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a heat exchange assembly and a steam generator using the same, wherein the heat exchange assembly comprises a furnace body and a combustion barrel, the furnace body comprises a plurality of water containing pipes, a pipe plate and a baffle plate; a first flue gas outlet is formed in the side portion of the combustion cylinder, a second flue gas outlet is formed in the furnace body, the first flue gas outlet and the second flue gas outlet are respectively located on the two axial sides and the two radial sides of the combustion cylinder, and a first gap used for flue gas flowing is formed between the combustion cylinder and the furnace body. According to the heat exchange assembly, the first flue gas outlet and the second flue gas outlet are respectively arranged on the two axial sides and the two radial sides of the combustion cylinder, so that the flue gas can be output from the second flue gas outlet after being output from the combustion cylinder and flowing in the first gap and the second gap for enough distance around the circumferential direction of the combustion cylinder, the flow path of the flue gas is prolonged, the heat exchange area and the heat exchange time of the flue gas and the water containing pipe are increased, and the heat exchange efficiency is greatly improved.
Description
Technical Field
The invention relates to a heat exchange assembly and a steam generator using the same.
Background
The steam generator is a device for heating water and outputting high-temperature steam by utilizing heat energy of fuel or other energy sources, and generally comprises a generator body, a combustion assembly and a heat exchange assembly, wherein high-temperature flue gas generated after fuel is combusted in the combustion assembly enters the heat exchange assembly and exchanges heat with an evaporator in the heat exchange assembly, so that water in the evaporator is vaporized and forms steam to be output, and tail gas formed after the high-temperature flue gas exchanges heat with the evaporator is discharged through a smoke outlet.
However, in the existing steam generator, on one hand, the high-temperature flue gas can only exchange heat with water in the evaporator through the limited area of the outer surface of the evaporator, and the heat exchange area is small, so that incomplete heat exchange and low heat exchange efficiency are caused; on the other hand, the tail gas formed after the high-temperature flue gas and the evaporator are subjected to heat exchange is directly discharged, so that the residual energy in the tail gas cannot be utilized, and the energy is greatly wasted.
Disclosure of Invention
It is an object of the present invention to overcome the deficiencies of the prior art and to provide a heat exchange assembly.
In order to achieve the purpose, the invention adopts the technical scheme that:
a heat exchange assembly comprises a furnace body and a combustion barrel arranged in the furnace body and used for containing high-temperature flue gas, wherein the furnace body comprises a plurality of water containing pipes arranged around the circumferential direction of the combustion barrel, two pipe plates respectively connected to two ends of the plurality of water containing pipes and a baffle connected between every two adjacent water containing pipes;
the side part of the combustion cylinder is provided with a first flue gas outlet, the furnace body is provided with a second flue gas outlet, the first flue gas outlet and the second flue gas outlet are respectively positioned at the axial and radial two sides of the combustion cylinder, and a first gap for flue gas flowing is formed between the combustion cylinder and the furnace body.
Preferably, the combustion cylinder and the furnace body are coaxially arranged, and two ends of the combustion cylinder are respectively connected with the two tube plates.
Preferably, two ends of the water containing pipes are respectively inserted into the two pipe plates.
Preferably, the baffle comprises a first plate body and/or a second plate body, at least two adjacent water containing pipes forming the furnace body are not provided with the first plate body or the second plate body, and the second flue gas outlet is formed between the two water containing pipes which are not provided with the first plate body or the second plate body.
Preferably, the number of the furnace bodies is multiple, the furnace bodies are coaxially arranged, the diameters of the furnace bodies are gradually increased, the second flue gas outlets of every two adjacent furnace bodies are respectively located on two axial and radial sides of the combustion cylinder, and a second gap for flue gas flowing is formed between every two adjacent furnace bodies.
It is another object of the present invention to provide a steam generator.
In order to achieve the purpose, the invention adopts the technical scheme that:
a steam generator comprises a generator body, a water inlet unit, a heating unit, an air outlet unit and a smoke exhaust unit, wherein the water inlet unit, the heating unit, the air outlet unit and the smoke exhaust unit are arranged on the generator body, and the heat exchange assembly is arranged in the generator body.
Preferably, heat exchange module still includes two and encloses respectively and locates two surrounding plates of tube sheet week side, the tube sheet the surrounding plate with enclose synthetic cavity between the generator body inner wall, the both ends mouth of pipe of flourishing water pipe respectively with two the cavity be linked together, two cavities respectively with intake the unit with the unit of giving vent to anger is linked together, the second exhanst gas outlet with the unit of discharging fume is linked together.
Preferably, the heating unit is a burner, one of the two tube plates has an opening and the opening is communicated with the combustion cylinder, and a burner head of the burner passes through the opening and is inserted into the combustion cylinder.
Preferably, the unit of discharging fume including locate on the generator body and with the pipe of discharging fume that the second exhanst gas outlet is linked together, locate it just is located to discharge fume intraductally waste heat recovery subassembly on the flow path of flue gas, waste heat recovery subassembly includes the barrel, set up in water inlet and delivery port on the barrel, locate many in the barrel are used for letting in and lead to the play the heat exchange tube of flue gas, set up in on the barrel and with the many heat exchange tubes be linked together advance mouth and outlet flue.
Further preferably, many heat exchange tubes include first heat exchange tube, arrange in round circumferencial direction in many second heat exchange tubes of first heat exchange tube week side, wherein, first heat exchange tube and many the second heat exchange tube parallel just the pipe diameter of first heat exchange tube is greater than the pipe diameter of second heat exchange tube.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the heat exchange assembly, the first flue gas outlet and the second flue gas outlet are respectively arranged on the two axial sides and the two radial sides of the combustion cylinder, so that the flue gas can be output from the second flue gas outlet after being output from the combustion cylinder and flowing in the first gap and the second gap for enough distance around the circumferential direction of the combustion cylinder, the flow path of the flue gas is prolonged, the heat exchange area and the heat exchange time of the flue gas and the water containing pipe are increased, and the heat exchange efficiency is greatly improved; meanwhile, the steam generator applying the heat exchange assembly is also provided with a waste heat recovery assembly in the smoke exhaust pipe, and residual energy in tail gas can be effectively utilized through the arrangement of the waste heat recovery assembly, so that the waste of energy is avoided.
Drawings
FIG. 1 is a schematic perspective view of a steam generator (without a heat recovery assembly) according to an embodiment of the present invention;
FIG. 2 is a schematic top view of the heat exchange assembly of FIG. 1;
FIG. 3 is a schematic front view of a steam generator (including a heat recovery assembly) according to an embodiment of the present invention;
fig. 4 is a schematic radial cross-sectional view of the heat recovery assembly of fig. 3.
In the figure: 1. a furnace body; 1a, a water containing pipe; 1b, a tube plate; 1c, a baffle plate; 1c1, a first plate body; 1c2, a second plate body; 2. a combustion can; 3. a first flue gas outlet; 4. a second flue gas outlet; 5. a first gap; 6. a second gap; 7. a generator body; 8. a water inlet unit; 9. a heating unit; 10. an air outlet unit; 11. enclosing plates; 12. a cavity; 13. an opening; 14. a smoke exhaust pipe; 15. a barrel; 16. a water inlet; 17. a water outlet; 18. a heat exchange pipe; 18a, a first heat exchange tube; 18b, a second heat exchange tube; 19. a smoke inlet; 20. a smoke outlet; 21. a safety valve; 22. a third gap.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
The invention relates to the improvement of a steam generator, in particular to the improvement of a heat exchange assembly in the steam generator, wherein the improved heat exchange assembly is characterized in that a first flue gas outlet 3 and a second flue gas outlet 4 are respectively arranged at two axial and radial sides of a combustion cylinder 2, so that flue gas can be output from the second flue gas outlet 4 after being output from the combustion cylinder 2 and needing to flow in a first gap 5 and a second gap 6 for enough distance around the circumferential direction of the combustion cylinder 2, the flow path of the flue gas is prolonged, the heat exchange area and the heat exchange time of the flue gas and a water containing pipe 1a are increased, and the heat exchange efficiency is greatly improved; meanwhile, the steam generator is also provided with a waste heat recovery assembly in the smoke exhaust pipe 14, and residual energy in tail gas can be effectively utilized through the arrangement of the waste heat recovery assembly, so that the waste of energy is avoided.
Referring to fig. 1 to 4, a steam generator is shown, which comprises a vertical generator body 7, a heat exchange assembly arranged in the generator body 7, a water inlet unit 8 arranged on the generator body 7, a heating unit 9, an air outlet unit 10, a smoke exhaust unit and a safety valve 21. Wherein, the water inlet unit 8 comprises a water inlet pipe and a water pump arranged on the water inlet pipe, the heating unit 9 is a burner, and the air outlet unit 10 comprises an air outlet pipe and an air outlet valve arranged on the air outlet pipe.
In this embodiment, heat exchange assembly includes furnace body 1, locates the combustion barrel 2 that is used for holding high temperature flue gas in the furnace body 1, and furnace body 1 includes many flourishing water pipes 1a that extend about arranging round the circumference of combustion barrel 2, two connect respectively in the tube sheet 1b at many flourishing water pipe 1a both ends, connect in baffle 1c between every two adjacent flourishing water pipes 1 a. Wherein, the combustion cylinder 2 is arranged with the same shaft as the furnace body 1, and two ends thereof are respectively connected with the two tube plates 1 b.
A first flue gas outlet 3 is formed in the side portion of the combustion cylinder 2, a second flue gas outlet 4 is formed in the furnace body 1, the first flue gas outlet 3 and the second flue gas outlet 4 are respectively located on the two axial sides and the two radial sides of the combustion cylinder 2, and a first gap 5 used for flue gas flowing is formed between the combustion cylinder 2 and the furnace body 1. Here, one of the two tube sheets 1b has an opening 13 and the opening 13 communicates with the combustion tube 2, and a burner head of the burner is inserted into the combustion tube 2 through the opening 13, so that the combustion tube 2 can be filled with high-temperature flue gas by the combustion of the burner head.
So, high temperature flue gas can be exported from first exhanst gas outlet 3 and flow to second exhanst gas outlet 4 outputs round the circumference of combustion section of thick bamboo 2, very big assurance heat exchange efficiency.
In this embodiment, the heat exchange assembly further includes two surrounding plates 11 respectively surrounding the two tube plates 1b, a cavity 12 is formed between the tube plates 1b, the surrounding plates 11 and the inner wall of the generator body 7, the two ends of the plurality of water containing tubes 1a are respectively inserted into the two tube plates 1b and are communicated with the two cavities 12, and the two cavities 12 are respectively communicated with the water inlet tube and the air outlet tube for introducing water and outputting steam.
Preferably, the baffle 1c includes a first plate 1c1 and/or a second plate 1c2 arranged up and down, the first plate 1c1 is not provided or the second plate 1c2 is not provided between at least two adjacent water containing pipes 1a constituting the furnace body 1, and the second flue gas outlet 4 is formed between two water containing pipes 1a without the first plate 1c1 or the second plate 1c 2. Therefore, the first plate body 1c1 or the second plate body 1c2 is removed to form the second flue gas outlet 4, the caliber of the second flue gas outlet 4 is increased, and the flue gas output efficiency is ensured.
Specifically, the first flue gas outlet 3 is located at the upper side portion of the combustion cylinder 2, and the second flue gas outlets 4 are four and located at the lower side portion of the furnace body 1, the four second flue gas outlets 4 being obtained by removing four adjacent second plate bodies 1c 2.
In this embodiment, there are two furnace bodies 1, two furnace bodies 1 are coaxial and have gradually increased diameters, the second flue gas outlets 4 on two furnace bodies 1 are respectively located at two axial and radial sides of the combustion cylinder 2, and a second gap 6 for flue gas flowing is formed between the two furnace bodies 1. Through setting up two furnace bodies 1 for the flue gas can flow a week in second clearance 6 around the circumference of combustion cylinder 2 again, has further prolonged the flow path of flue gas, has guaranteed the heat exchange efficiency of flue gas with flourishing water pipe 1 a.
Further, three second flue gas outlets 4 are provided in the furnace body 1 away from the combustion cans 2 and located at the upper side of the furnace body 1, and the three second flue gas outlets 4 are obtained by removing three adjacent first plate bodies 1c 1.
In this embodiment, as shown in fig. 3 to 4, the smoke exhaust unit includes a smoke exhaust pipe 14 disposed on the generator body 7 and communicated with the second smoke outlet 4, and a waste heat recovery assembly disposed in the smoke exhaust pipe 14 and located on a flow path of smoke, where the waste heat recovery assembly includes a cylinder 15, a water inlet 16 and a water outlet 17 disposed on a side wall of the cylinder 15, a plurality of heat exchange pipes 18 disposed in the cylinder 15 for introducing and discharging smoke, and a smoke inlet 19 and a smoke outlet 20 disposed at two axial ends of the cylinder 15 and communicated with the plurality of heat exchange pipes 18. Further, the water inlet 16 and the water outlet 17 are respectively arranged on the upper side wall and the lower side wall of the cylinder 15, and the side wall of the smoke exhaust pipe 14 is provided with an opening communicated with the water inlet 16 and the water outlet 17 for water passing. So, when the tail gas that forms after the heat transfer of high temperature flue gas got into heat exchange tube 18 from inlet 19, can lead to water in 16 to barrel 15 from the water inlet, make the tail gas in the heat exchange tube 18 and the water in the barrel 15 carry out the heat transfer, low temperature flue gas discharges from outlet 20 afterwards, and the water that heaies up after the heat transfer exports to the water environment from delivery port 17 to the realization is to the utilization of remaining heat in the tail gas.
Further, the plurality of heat exchange tubes 18 include a first heat exchange tube 18a and a plurality of second heat exchange tubes 18b arranged around the circumference of the first heat exchange tube 18a, wherein the plurality of second heat exchange tubes 18b enclose two concentrically arranged rings with increased diameters, the first heat exchange tube 18a is parallel to the plurality of second heat exchange tubes 18b, and the tube diameter of the first heat exchange tube 18a is greater than that of the second heat exchange tubes 18 b. Therefore, a large amount of smoke can circulate in the first heat exchange tubes 18a, and other smoke circulates in the second heat exchange tubes 18b, so that the heat exchange efficiency of the smoke and water is ensured, and the flowing speed of the smoke is not influenced.
In this example, a third gap 22 is provided between the waste heat recovery assembly and the smoke exhaust pipe 14, and the third gap 22 can also be used for the flow of smoke and the heat exchange with the water in the cylinder 15, so as to increase the heat exchange area and further improve the heat exchange effect.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A heat exchange assembly, characterized by: the high-temperature flue gas boiler comprises a boiler body and a combustion barrel arranged in the boiler body and used for containing high-temperature flue gas, wherein the boiler body comprises a plurality of water containing pipes arranged around the circumferential direction of the combustion barrel, two pipe plates respectively connected to two ends of the plurality of water containing pipes, and a baffle connected between every two adjacent water containing pipes;
the side part of the combustion cylinder is provided with a first flue gas outlet, the furnace body is provided with a second flue gas outlet, the first flue gas outlet and the second flue gas outlet are respectively positioned at the axial and radial two sides of the combustion cylinder, and a first gap for flue gas flowing is formed between the combustion cylinder and the furnace body.
2. A heat exchange assembly according to claim 1, wherein: the combustion cylinder and the furnace body are coaxially arranged, and two ends of the combustion cylinder are respectively connected with the two tube plates.
3. A heat exchange assembly according to claim 1, wherein: two ends of the water containing pipes are respectively inserted into the two pipe plates.
4. A heat exchange assembly according to claim 1, wherein: the baffle includes first plate body and/or second plate body, constitutes at least two adjacent of furnace body flourishing water pipe between not be equipped with first plate body or not be equipped with the second plate body, not be equipped with first plate body or not be equipped with the second plate body two flourishing water pipe between form the second exhanst gas outlet.
5. A heat exchange assembly according to claim 1, wherein: the furnace bodies are arranged coaxially, the diameters of the furnace bodies are gradually increased, every two adjacent furnace bodies are provided with the second flue gas outlets which are respectively positioned at two axial sides and two radial sides of the combustion cylinder, and a second gap for flue gas flowing is formed between every two adjacent furnace bodies.
6. The utility model provides a steam generator, includes the generator body, locates water inlet unit, heating element, the unit of giving vent to anger and the unit of discharging fume on the generator body, its characterized in that: the steam generator further comprises a heat exchange assembly according to any one of claims 1 to 5 disposed within the generator body.
7. A steam generator according to claim 6, wherein: the heat exchange assembly further comprises two surrounding plates which are respectively arranged on the peripheral sides of the two tube plates, the tube plates and the inner wall of the generator body form a cavity in a surrounding mode, pipe orifices at two ends of the water containing pipe are respectively communicated with the two cavities, the two cavities are respectively communicated with the water inlet unit and the air outlet unit, and the second smoke outlet is communicated with the smoke exhaust unit.
8. A steam generator according to claim 6, wherein: the heating unit is a burner, one of the two tube plates is provided with an opening, the opening is communicated with the combustion cylinder, and a combustion head of the burner penetrates through the opening and is inserted into the combustion cylinder.
9. A steam generator according to claim 6, wherein: the unit of discharging fume is including locating on the generator body and with the tub, the locating of discharging fume that the second exhanst gas outlet is linked together discharge fume intraductally and be located waste heat recovery subassembly on the flow path of flue gas, waste heat recovery subassembly includes the barrel, set up in water inlet and delivery port on the barrel, locate many in the barrel are used for letting in and lead to the play the heat exchange tube of flue gas, set up in on the barrel and with the many heat exchange tubes be linked together advance mouth and the mouth of cigarette.
10. A steam generator according to claim 9, wherein: many heat exchange tubes include first heat exchange tube, arrange round the circumferencial direction in many second heat exchange tubes of first heat exchange tube week side, wherein, first heat exchange tube and many the second heat exchange tube parallel just the pipe diameter of first heat exchange tube is greater than the pipe diameter of second heat exchange tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110814158.2A CN113503530A (en) | 2021-07-19 | 2021-07-19 | Heat exchange assembly and steam generator using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110814158.2A CN113503530A (en) | 2021-07-19 | 2021-07-19 | Heat exchange assembly and steam generator using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113503530A true CN113503530A (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110814158.2A Pending CN113503530A (en) | 2021-07-19 | 2021-07-19 | Heat exchange assembly and steam generator using same |
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| Country | Link |
|---|---|
| CN (1) | CN113503530A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508745A (en) * | 2022-01-24 | 2022-05-17 | 安徽热井节能科技有限公司 | Novel through-flow steam generator or steam boiler and heat exchange unit thereof |
-
2021
- 2021-07-19 CN CN202110814158.2A patent/CN113503530A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508745A (en) * | 2022-01-24 | 2022-05-17 | 安徽热井节能科技有限公司 | Novel through-flow steam generator or steam boiler and heat exchange unit thereof |
| CN114508745B (en) * | 2022-01-24 | 2022-10-11 | 安徽热井节能科技有限公司 | Through-flow steam generator or steam boiler and heat exchange unit thereof |
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Address after: No. 34, Phase II, Zhixin Zhizaogu, No. 10, Lekun Road, Leyu Town, Zhangjiagang, Jiangsu Province, 215000 (Fuchang Boiler) Applicant after: Zhangjiagang Fuchang Boiler Manufacturing Co.,Ltd. Address before: 215622 Yueyu town Qingfeng Village (Fuchang boiler), Zhangjiagang City, Suzhou City, Jiangsu Province Applicant before: Zhangjiagang Fuchang Boiler Manufacturing Co.,Ltd. |
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