CN215337929U - Boiler flue gas waste heat heating system - Google Patents
Boiler flue gas waste heat heating system Download PDFInfo
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- CN215337929U CN215337929U CN202122919882.XU CN202122919882U CN215337929U CN 215337929 U CN215337929 U CN 215337929U CN 202122919882 U CN202122919882 U CN 202122919882U CN 215337929 U CN215337929 U CN 215337929U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 62
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000003546 flue gas Substances 0.000 title claims abstract description 48
- 239000002918 waste heat Substances 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 173
- 239000008236 heating water Substances 0.000 claims description 37
- 239000007789 gas Substances 0.000 claims description 30
- 230000001502 supplementing effect Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 230000003020 moisturizing effect Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The utility model discloses a boiler flue gas waste heat heating system, which relates to the technical field of boiler flue gas heating and aims to solve the problem of insufficient flue gas waste heat utilization; a normal-temperature waterway is arranged at the outlet of the normal-temperature water tank; the heat collection end of the first heat exchanger is communicated with the first branch, the heat exchange end of the first heat exchanger is communicated with the normal-temperature water path, and the normal-temperature water path is provided with a circulating pump.
Description
Technical Field
The utility model relates to the technical field of boiler flue gas heating, in particular to a boiler flue gas waste heat heating system.
Background
The boiler flue gas waste heat heating system is mainly applied to industrial boilers and refers to boilers which utilize waste heat of flue gas generated in various industrial processes and heat generated after combustible substances are combusted to heat water to a certain temperature.
Among the prior art, the water in the gas heater circulates between the water tank through the circulating pump, when lacking water in the gas heater, will directly take out hot water in the water tank and pour into the gas heater in, and the water in the water tank temperature can rise along with it after long-time hydrologic cycle, the temperature of water in the water tank risees and can lead to flowing back the temperature of water in the gas heater also higher, so the water in the gas heater can be in the flue gas absorptive heat just also less, lead to the waste heat utilization in the flue gas insufficient, most heat still can be along with the flue gas and run off.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the flue gas waste heat is not fully utilized, the utility model provides a boiler flue gas waste heat heating system which comprises a gas boiler, a normal temperature water tank and a heating water return path, wherein a flue gas heat exchanger is arranged on a flue of the gas boiler,
a first branch communicated with an inlet of the flue gas heat exchanger is arranged on the heating water return path;
a normal-temperature waterway is arranged at the outlet of the normal-temperature water tank;
the heat collection end of the first heat exchanger is communicated with the first branch, the heat exchange end of the first heat exchanger is communicated with the normal-temperature water path, and the normal-temperature water path is provided with a circulating pump.
By adopting the technical scheme, the first heat exchanger exchanges heat between the heating return water in the heating return water channel and the normal-temperature water in the normal-temperature water channel, so that the temperature of the heating return water flowing back to the flue gas heat exchanger can be lower, the return water can more fully absorb the waste heat in the flue gas, and the waste heat in the flue gas can be more fully utilized.
The utility model is further provided with: the gas boiler is characterized in that a hot water tank is further arranged, a normal-temperature water path is communicated with an inlet of the hot water tank, an outlet of the hot water tank is communicated with the gas boiler through a water supply path, and a water supply pump is mounted on the water supply path.
Through adopting above-mentioned technical scheme, normal atmospheric temperature water in the normal atmospheric temperature water route pours into the hot-water tank into after the heat transfer of first heat exchanger in, at this moment the water in the hot-water tank can be higher than normal atmospheric temperature water through the heat transfer after the heat transfer of first heat exchanger, in the feed pump can pump the water in the hot-water tank to gas boiler, because the temperature of water is higher than normal atmospheric temperature water, so gas boiler can be more quick with the heating of water intensification formation vapor, and then reach the purpose of saving boiler fuel.
The utility model is further provided with: a second valve is arranged on the heating water return path and is positioned at the downstream of the connecting point of the first branch and the heating water return path; a third valve is arranged on the first branch; and the heating water return path is also communicated with an outlet of the steam-water heat exchanger.
Through adopting above-mentioned technical scheme, No. two valves and No. three valve cooperations are used, close No. two valves under the normal condition and open No. three valves, make the first branch road of heating return water way intercommunication, and then make boiler flue gas waste heat heating system more abundant to the utilization of flue gas waste heat. When the first branch goes wrong, the second valve is opened and the third valve is closed, so that the heating return water path is communicated to the steam-water heat exchanger, and the boiler flue gas waste heat heating system can continue to work even if the first branch goes wrong, and heating and factory production cannot be influenced.
The utility model is further provided with: and the steam-water heat exchanger is communicated with an inlet of the hot water tank through a condensation path.
Through adopting above-mentioned technical scheme, when the catch water heat exchanger during operation, the comdenstion water that produces in the catch water heat exchanger can flow into the hot-water tank along the condensation way, and then pours into the gas boiler with the comdenstion water into by the hot-water tank in, realizes being the function of gas boiler water feeding.
The utility model is further provided with: still including the heating water route, the heating water route with communicate through communicating pipe between the heating return water route, install a valve on communicating pipe.
Through adopting above-mentioned technical scheme, the switch of a valve control communicating pipe, communicating pipe can make the heating go out the water route and return the water route and feed through together with the heating, when not heating in non-heating season, opens a valve and makes the heating go out the water route and return the water route and feed through with the heating, can make water circulate in the device equally, and then makes boiler flue gas waste heat heating system can both come into operation all the year.
The utility model is further provided with: the outlet of the normal temperature water tank is also communicated with a water supplementing path, the water supplementing path is communicated to the heating water returning path, and a water supplementing pump is installed on the water supplementing path.
Through adopting above-mentioned technical scheme, normal atmospheric temperature water in the moisturizing pump will normal temperature water tank is injected into the heating return water way in by the moisturizing way, realizes the effect to moisturizing level pressure in the heating system, further assurance heating system can safety and stability's operation.
The beneficial technical effects of the utility model are as follows:
1. through the first heat exchanger, heat exchange is carried out between heating return water and normal-temperature water, so that the temperature of the heating return water is reduced, the temperature of the water flowing back to the flue gas heat exchanger can be lower, the return water can more fully absorb waste heat in flue gas, and the waste heat in the flue gas can be more fully utilized.
2. The normal temperature water in the normal temperature water route can rise through temperature behind the heat transfer of first heat exchanger, and the normal temperature water of rising temperature flows into the hot-water tank in, and the rethread is pumped water pump and is annotated gas boiler with the water in the hot-water tank in, and the hydroenergy of being pumped and being annotated in gas boiler can be fast more rise temperature and form vapor, and then realize saving boiler fuel's purpose.
3. The first branch is communicated with the heating water return path, the steam-water heat exchanger can be used as a preparation circulating heating path, when the first branch fails, the second valve is opened, and the third valve is closed, so that the heating water return path is switched to the steam-water heat exchanger, and therefore the boiler can continue to work even when the first branch fails, and heating and factory production cannot be influenced.
Drawings
Fig. 1 shows a schematic structural diagram of the present invention.
Reference numerals: 1. a gas boiler; 11. a flue; 111. a flue gas heat exchanger; 2. a steam-water heat exchange complete device; 21. a heating water outlet path; 211. a valve number four; 22. a heating water return path; 221. a first branch; 2211. a valve number three; 222. a second valve; 223. a valve number five; 23. a steam-water heat exchanger; 231. a condensation path; 3. a normal temperature water tank; 31. a normal temperature waterway; 311. a circulation pump; 32. a water replenishing way; 321. a water replenishing pump; 4. a hot water tank; 41. a water supply path; 411. a feed pump; 5. a first heat exchanger; 6. a communicating pipe; 61. a first valve.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Referring to fig. 1, the utility model provides a boiler flue gas waste heat heating system, which comprises a gas boiler 1 and a normal-temperature water tank 3, wherein a flue 11 of the gas boiler is provided with a flue gas heat exchanger 111, and the flue gas heat exchanger 111 is communicated with a steam-water heat exchange complete device 2 through a pipeline. The steam-water heat exchange complete device 2 comprises a steam-water heat exchanger 23, an outlet of the steam-water heat exchanger 23 is communicated with a heating water outlet channel 21, an outlet of a flue gas heat exchanger 111 is communicated with the heating water outlet channel 21, an inlet of the steam-water heat exchanger 23 is communicated with a heating water return channel 22, and a first branch 221 communicated with the inlet of the flue gas heat exchanger 111 is arranged on the heating water return channel 22. Still including first heat exchanger 5, the end of adopting heat of first heat exchanger 5 communicates in first branch 221, and the intercommunication has normal atmospheric temperature water route 31 on the export of normal atmospheric temperature water tank 3, and the heat transfer end of first heat exchanger 5 communicates in normal atmospheric temperature water route 31, installs circulating pump 311 on the normal atmospheric temperature water route 31 for the water in the extraction normal atmospheric temperature water tank 3.
The gas boiler is further provided with a hot water tank 4, the normal-temperature water channel 31 is communicated with an inlet of the hot water tank 4, normal-temperature water after heat exchange can flow into the hot water tank 4, an outlet of the hot water tank 4 is communicated with the gas boiler 1 through a water feeding channel 41, a water feeding pump 411 is installed on the water feeding channel 41, the water feeding pump 411 can pump water in the hot water tank 4 into the gas boiler 1, water is fed into the gas boiler 1, and the gas boiler 1 can continuously run.
Through setting up first heat exchanger 5, make heating return water and normal atmospheric temperature water carry out the heat transfer, the heating return water can reduce through the heat transfer back-up temperature of first heat exchanger 5, and the heating return water through the cooling flows back to in the gas heater 111 through first branch road 221, and the waste heat in the absorption flue gas that the heating return water just can be more abundant like this makes the more abundant that waste heat in the flue gas can utilize. The normal temperature water flowing into the hot water tank 4 from the normal temperature water path 31 can rise through the heat exchange temperature of the first heat exchanger 5, so that the water pumped into the gas boiler 1 from the hot water tank 4 can be quickly heated to form steam, and the purpose of saving boiler fuel is achieved.
The second valve 222 is installed on the heating water return path 22, the second valve 222 is a stop valve, and the second valve 222 is located downstream of a connection point of the first branch 221 and the heating water return path 22. The third valve 2211 is installed on the first branch 221, the third valve 2211 is a stop valve, the third valve 2211 is located at the upstream of the first heat exchanger 5, the trend of the heating return water path 22 is controlled by adjusting the second valve 222 and the third valve 2211, when the first branch 221 breaks down, the second valve 222 can be opened by closing the third valve 2211 to switch the heating return water path 22 to the steam-water heat exchanger 23, so that the normal operation of the boiler can be ensured, and the normal heating and the normal production of a factory cannot be influenced.
The steam-water heat exchanger 23 is communicated with the inlet of the hot water tank 4 through the condensation path 231, and when the steam-water heat exchanger 23 is adopted for water circulation, condensed water generated in the steam-water heat exchanger 23 flows into the hot water tank 4 through the condensation path 231 and is pumped into the gas-fired boiler 1 through the hot water tank 4, so that the recycling of the condensed water is realized.
The heating water outlet path 21 and the heating water return path 22 are communicated through the communicating pipe 6, the communicating pipe 6 is arranged at the upstream of the first branch pipe 221, the first valve 61 is installed on the communicating pipe 6, the first valve 61 is a stop valve and used for controlling the opening and closing of the communicating pipe 6, the fourth valve 211 and the fifth valve 223 are installed on the heating water outlet path 21 and the heating water return path 22 respectively, the fourth valve 211 and the fifth valve 223 are stop valves, the fourth valve 211 is arranged at the downstream of the communicating pipe 6, and the fifth valve 223 is arranged at the upstream of the communicating pipe 6.
When heating is not performed in non-heating seasons, the fourth valve 211 and the fifth valve 223 are closed firstly, so that the heating water outlet path 21 and the heating water return path 22 stop water circulation in the heating system, and the first valve 61 is opened, so that the heating water outlet path 21 is communicated with the heating water return path 22 through the communicating pipe 6, at the moment, the boiler flue gas waste heat heating system forms internal water circulation and is continuously put into use, and a heating function is not provided, namely, when heating is not required, the boiler flue gas waste heat heating system is only used for factory production, and when heating is required, the boiler flue gas waste heat heating system can be simultaneously used for factory production and heating of a factory area.
The outlet of the normal temperature water tank 3 is also communicated with a water supplementing path 32, the water supplementing path 32 is communicated with the heating water returning path 22, a water supplementing pump 321 is further installed on the water supplementing path 32, water in the normal temperature water tank 3 can be pumped and injected into the heating water returning path 22 through the water supplementing pump 321, the function of supplementing water and fixing pressure to the heating system is achieved, and the safe and stable operation of the heating system is guaranteed.
In summary, the first heat exchanger 5 is arranged in the utility model, so that the temperature of water flowing back to the flue gas heat exchanger 111 can be reduced, further, the water in the flue gas heat exchanger 111 can absorb the waste heat in the flue gas more sufficiently, the waste heat in the flue gas can be utilized more sufficiently, meanwhile, the temperature of water flowing into the hot water tank 4 can be increased through the heat exchange of the first heat exchanger 5, and the temperature of water pumped and injected into the gas-fired boiler 1 is further increased, thereby achieving the purpose of saving boiler fuel. Through the cooperation of the second valve 222 and the third valve 2211, the water circulation of the steam-water heat exchanger 23 can be ensured even if the first branch 221 has a fault, and the normal production of a factory and the normal heating in the factory area are ensured. The first valve 61, the fourth valve 211 and the fifth valve 223 are arranged, so that the heating system can be closed in the non-heating season, and the system is only used for factory production.
While the utility model has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the utility model. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.
Claims (6)
1. The utility model provides a boiler flue gas waste heat heating system, includes gas boiler (1), normal atmospheric temperature water tank (3) and heating return water way (22), be provided with gas heater (111) on flue (11) of gas boiler (1), its characterized in that:
a first branch (221) communicated with an inlet of the flue gas heat exchanger (111) is arranged on the heating water return path (22);
a normal-temperature water channel (31) is arranged at the outlet of the normal-temperature water tank (3);
still including first heat exchanger (5), the heat collection end of first heat exchanger (5) communicate in first branch road (221), the heat transfer end of first heat exchanger (5) communicate in normal atmospheric temperature water route (31), install circulating pump (311) on the normal atmospheric temperature water route (31).
2. The boiler flue gas waste heat heating system according to claim 1, characterized in that: the gas boiler is characterized in that a hot water tank (4) is further arranged, a normal-temperature water path (31) is communicated with an inlet of the hot water tank (4), an outlet of the hot water tank (4) is communicated with the gas boiler (1) through a water supply path (41), and a water supply pump (411) is mounted on the water supply path (41).
3. The boiler flue gas waste heat heating system according to claim 2, characterized in that: a second valve (222) is arranged on the heating water return path (22), and the second valve (222) is positioned at the downstream of the connection point of the first branch (221) and the heating water return path (22); a third valve (2211) is arranged on the first branch (221); the heating water return path (22) is also communicated with an outlet of a steam-water heat exchanger (23).
4. The boiler flue gas waste heat heating system according to claim 3, characterized in that: the steam-water heat exchanger (23) is communicated with an inlet of the hot water tank (4) through a condensing path (231).
5. The boiler flue gas waste heat heating system according to claim 1, characterized in that: the heating water supply system is characterized by further comprising a heating water outlet channel (21), the heating water outlet channel (21) is communicated with the heating water return channel (22) through a communicating pipe (6), and a first valve (61) is mounted on the communicating pipe (6).
6. The boiler flue gas waste heat heating system according to claim 1, characterized in that: the outlet of the normal temperature water tank (3) is also communicated with a water supplementing channel (32), the water supplementing channel (32) is communicated to the heating water returning channel (22), and a water supplementing pump (321) is installed on the water supplementing channel (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122919882.XU CN215337929U (en) | 2021-11-26 | 2021-11-26 | Boiler flue gas waste heat heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122919882.XU CN215337929U (en) | 2021-11-26 | 2021-11-26 | Boiler flue gas waste heat heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215337929U true CN215337929U (en) | 2021-12-28 |
Family
ID=79578389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122919882.XU Active CN215337929U (en) | 2021-11-26 | 2021-11-26 | Boiler flue gas waste heat heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215337929U (en) |
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2021
- 2021-11-26 CN CN202122919882.XU patent/CN215337929U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240416 Address after: Room 247-12437, 2nd Floor, No. 109-1 Quanyun Road, Shenyang Area, China (Liaoning) Pilot Free Trade Zone, Shenyang City, Liaoning Province, 110000 Patentee after: Liaoning Shengguan New Energy Technology Co.,Ltd. Country or region after: China Address before: 110000 room x-282, No. 96, Sanhao Street, Heping District, Shenyang City, Liaoning Province Patentee before: Wansheng Zhishan energy saving engineering consulting (Shenyang) Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |