CN214501191U - Steam boiler flue gas waste heat recovery device - Google Patents
Steam boiler flue gas waste heat recovery device Download PDFInfo
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- CN214501191U CN214501191U CN202023129358.4U CN202023129358U CN214501191U CN 214501191 U CN214501191 U CN 214501191U CN 202023129358 U CN202023129358 U CN 202023129358U CN 214501191 U CN214501191 U CN 214501191U
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- heat exchange
- flue gas
- channel
- water
- cold water
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model discloses a steam boiler flue gas waste heat recovery device, relating to the technical field of waste heat recovery, comprising a device shell, wherein two sides of the device shell are provided with end covers; the device comprises a shell, a plurality of heat exchange plates and a plurality of heat exchange plates, wherein the heat exchange plates are formed by splicing a plurality of single plates with trapezoidal cross sections, two adjacent heat exchange plates are stacked together in a staggered manner to form a structure with a similar honeycomb cross section, the channels with hexagonal cross sections formed by the plurality of heat exchange plates are divided into a flue gas channel and a cold water channel, and the flue gas channel and the cold water channel are arranged in a manner that the type of the channel adjacent to each flue gas channel or the cold water channel is different from that of the channel; the end covers positioned at the two sides of the device shell are respectively provided with a water inlet pipe and a water outlet pipe. Compare in traditional pipeline heat transfer mode, this device adopts the heat transfer board to replace the heat exchange tube for heat exchange efficiency is higher, and washs more easily.
Description
Technical Field
The utility model relates to a waste heat recovery technical field, concretely relates to steam boiler flue gas waste heat recovery device.
Background
The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy. More flue gas can be produced in the working process of the boiler, the flue gas contains more heat energy, and if the flue gas is directly discharged, a large amount of energy can be lost. And the more heat recovery unit that is more common for boiler flue gas adopts heat transfer pipeline and external medium to carry out the heat exchange mostly to reach and preheat the purpose of retrieving, but when passing through coil pipe and external heat transfer, heat transfer area is less, and heat exchange efficiency is high enough and the solid impurity that has in the flue gas blocks up the pipeline easily, and the later maintenance cost is higher.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steam boiler flue gas waste heat recovery device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a steam boiler flue gas waste heat recovery device comprises a device shell, wherein end covers are arranged on two sides of the device shell; the device comprises a shell, a plurality of heat exchange plates and a plurality of heat exchange plates, wherein the heat exchange plates are formed by splicing a plurality of single plates with trapezoidal cross sections, two adjacent heat exchange plates are stacked together in a staggered manner to form a structure with a similar honeycomb cross section, the channels with hexagonal cross sections formed by the plurality of heat exchange plates are divided into a flue gas channel and a cold water channel, and the flue gas channel and the cold water channel are arranged in a manner that the type of the channel adjacent to each flue gas channel or the cold water channel is different from that of the channel; the end covers positioned at two sides of the device shell are respectively provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively communicated with one end of the cold water channel.
As a further aspect of the present invention: the device is characterized in that a heat exchange water tank is arranged on the outer side of the device shell, a water pump is arranged in the heat exchange water tank, the output end of the water pump is communicated with the water inlet pipe, and the water outlet pipe is communicated with the heat exchange water tank.
As a further aspect of the present invention: and a water plug is arranged at the bottom of the heat exchange water tank.
As a further aspect of the present invention: the device is characterized in that an air inlet and an air outlet are respectively arranged on two sides of the shell of the device, and the air inlet and the air outlet are respectively communicated with an air inlet pipe and an air outlet pipe.
As a further aspect of the present invention: the water outlet pipe is provided with a branch pipe communicated with the air inlet pipe, and the branch pipe is provided with a valve.
Compared with the prior art, the beneficial effects of the utility model are that:
high-temperature flue gas generated by the boiler can circulate in the gas inlet pipe, the gas inlet, the flue gas channel, the gas outlet and the gas outlet pipe, and cold water for exchanging heat with the high-temperature flue gas can circularly flow in the heat exchange water tank, the water inlet pipe, the cold water channel and the water outlet pipe; when the flue gas channel and the cold water channel respectively pass through, the flue gas channel and the cold water channel can exchange heat through the heat exchange plate due to large temperature difference between the flue gas channel and the cold water channel, the temperature of the flue gas is reduced due to heat exchange, and the temperature of the cold water is increased, so that the purpose of waste heat recovery is achieved; and no matter the structural characteristics of the heat exchange plate or the spaced arrangement mode of the cold water channel and the flue gas channel, the heat exchange area can be maximized in the heat exchange process, and the heat exchange efficiency is highest.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a flue gas waste heat recovery device of a steam boiler.
Fig. 2 is a schematic view of the structure inside the device case.
Fig. 3 is a schematic structural view of a heat exchange plate.
In the figure: 1-device shell, 2-end cover, 3-water inlet pipe, 4-air outlet pipe, 5-air outlet, 6-heat exchange water tank, 7-water plug, 8-air inlet, 9-flue gas channel, 10-branch pipe, 11-valve, 12-cold water channel, 13-heat exchange plate, 14-air inlet pipe, 15-water outlet pipe and 16-water pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that, if there is a directional indication (such as up, down, left, right, front, and back) in the embodiment of the present invention, it is only used to explain the relative position relationship between the components, the motion situation, etc. in a certain specific posture, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if a description of "first", "second", etc. is referred to in the present invention, it is used for descriptive purposes only and not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The following detailed description is given to specific implementations of the present invention with reference to specific embodiments:
example 1
Referring to fig. 1 to 3, in an embodiment of the present invention, a flue gas waste heat recovery device for a steam boiler includes a device housing 1, wherein end covers 2 are disposed at two sides of the device housing 1; the device comprises a device shell 1 and is characterized in that a plurality of heat exchange plates 13 are further arranged in the device shell 1, the heat exchange plates 13 are formed by splicing a plurality of single plates with trapezoidal cross sections, two adjacent heat exchange plates 13 are stacked together in a staggered mode to form a structure with a similar honeycomb-shaped cross section, a channel with a hexagonal cross section formed by the heat exchange plates 13 is divided into a flue gas channel 9 and a cold water channel 12, and the flue gas channel 9 and the cold water channel 12 are arranged in a mode that the type of the channel adjacent to each flue gas channel 9 or the cold water channel is different from that of the channel; the end covers 2 positioned at two sides of the device shell 1 are respectively provided with a water inlet pipe 3 and a water outlet pipe 15, and the water inlet pipe 3 and the water outlet pipe 15 are respectively communicated with one end of the cold water channel 12.
Further, an air inlet 8 and an air outlet 5 are respectively arranged on two sides of the device shell 1, and the air inlet 8 and the air outlet 5 are respectively communicated with the air inlet pipe 14 and the air outlet pipe 4.
Further, a heat exchange water tank 6 is arranged on the outer side of the device shell 1, a water pump 16 is arranged inside the heat exchange water tank 6, the output end of the water pump 16 is communicated with the water inlet pipe 3, and the water outlet pipe 15 is communicated with the heat exchange water tank 6.
In practical application, high-temperature flue gas generated by a boiler can circulate in the air inlet pipe 14, the air inlet 8, the flue gas channel 9, the air outlet 5 and the air outlet pipe 4, and cold water for exchanging heat with the high-temperature flue gas can circularly flow in the heat exchange water tank 6, the water inlet pipe 3, the cold water channel 12 and the water outlet pipe 15; when the flue gas and the cold water pass through the flue gas channel 9 and the cold water channel 12 respectively, heat exchange is carried out through the heat exchange plate 13 due to large temperature difference between the flue gas and the cold water, the temperature of the flue gas is reduced due to the heat exchange, and the temperature of the cold water is increased, so that the purpose of waste heat recovery is achieved; and no matter the structural characteristics of the heat exchange plate 13 or the spaced arrangement mode of the cold water channel 12 and the flue gas channel 9, the heat exchange area can be maximized in the heat exchange process, and the heat exchange efficiency is highest.
Further, a water plug 7 is arranged at the bottom of the heat exchange water tank 6. The hot water in the heat exchange water tank 6 can be taken out through the water plug 7.
Example 2
The embodiment is further improved on the basis of the embodiment 1, and the improvement content is as follows: the water outlet pipe 15 is provided with a branch pipe 10 communicated with the air inlet pipe 14, and the branch pipe 10 is provided with a valve 11. When the device is along with the increase of practical time, contain a large amount of solid impurity in the flue gas and can the adhesion on the surface of heat transfer board 13 to seriously influence heat exchange efficiency and lead to the pipeline to block up even, only need open valve 11 this moment can make some clean water on the outlet pipe 15 get into intake pipe 10, flue gas passageway 9 and outlet duct 4 along bleeder 10, thereby reach the effect of washing.
In summary, the working principle of the present invention is: high-temperature flue gas generated by the boiler can circulate in the gas inlet pipe 14, the gas inlet 8, the flue gas channel 9, the gas outlet 5 and the gas outlet pipe 4, and cold water for exchanging heat with the high-temperature flue gas can circularly flow in the heat exchange water tank 6, the water inlet pipe 3, the cold water channel 12 and the water outlet pipe 15; when the flue gas and the cold water pass through the flue gas channel 9 and the cold water channel 12 respectively, heat exchange is carried out through the heat exchange plate 13 due to large temperature difference between the flue gas and the cold water, the temperature of the flue gas is reduced due to the heat exchange, and the temperature of the cold water is increased, so that the purpose of waste heat recovery is achieved; and no matter the structural characteristics of the heat exchange plate 13 or the spaced arrangement mode of the cold water channel 12 and the flue gas channel 9, the heat exchange area can be maximized in the heat exchange process, and the heat exchange efficiency is highest.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. A steam boiler flue gas waste heat recovery device comprises a device shell (1), and is characterized in that end covers (2) are arranged on two sides of the device shell (1); the device is characterized in that a plurality of heat exchange plates (13) are further arranged in the device shell (1), the heat exchange plates (13) are formed by splicing a plurality of single plates with trapezoidal cross sections, two adjacent heat exchange plates (13) are stacked together in a staggered mode to form a structure with a honeycomb-like cross section, the channels with hexagonal cross sections formed by the plurality of heat exchange plates (13) are divided into a flue gas channel (9) and a cold water channel (12), and the flue gas channel (9) and the cold water channel (12) are arranged in a mode that the type of the channel adjacent to each flue gas channel (9) or the cold water channel is different from that of the channel; the end covers (2) positioned at two sides of the device shell (1) are respectively provided with a water inlet pipe (3) and a water outlet pipe (15), and the water inlet pipe (3) and the water outlet pipe (15) are respectively communicated with one end of the cold water channel (12).
2. A steam boiler flue gas waste heat recovery device according to claim 1, characterized in that a heat exchange water tank (6) is arranged outside the device housing (1), a water pump (16) is arranged inside the heat exchange water tank (6), the output end of the water pump (16) is communicated with the water inlet pipe (3), and the water outlet pipe (15) is communicated with the heat exchange water tank (6).
3. A steam boiler flue gas waste heat recovery device according to claim 2, characterized in that the bottom of the heat exchange water tank (6) is provided with a water plug (7).
4. A steam boiler flue gas waste heat recovery device according to claim 1, characterized in that both sides of the device casing (1) are respectively provided with an air inlet (8) and an air outlet (5), and the air inlet (8) and the air outlet (5) are respectively communicated with the air inlet pipe (14) and the air outlet pipe (4).
5. A steam boiler flue gas waste heat recovery device according to claim 4, characterized in that the outlet pipe (15) is provided with branch pipes (10) communicated with the inlet pipe (14), and the branch pipes (10) are provided with valves (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023129358.4U CN214501191U (en) | 2020-12-23 | 2020-12-23 | Steam boiler flue gas waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023129358.4U CN214501191U (en) | 2020-12-23 | 2020-12-23 | Steam boiler flue gas waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214501191U true CN214501191U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023129358.4U Active CN214501191U (en) | 2020-12-23 | 2020-12-23 | Steam boiler flue gas waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214501191U (en) |
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2020
- 2020-12-23 CN CN202023129358.4U patent/CN214501191U/en active Active
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