CN220506757U - Boiler economizer and boiler - Google Patents
Boiler economizer and boiler Download PDFInfo
- Publication number
- CN220506757U CN220506757U CN202322172122.6U CN202322172122U CN220506757U CN 220506757 U CN220506757 U CN 220506757U CN 202322172122 U CN202322172122 U CN 202322172122U CN 220506757 U CN220506757 U CN 220506757U
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- flue gas
- heat exchange
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- water
- boiler
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 105
- 239000003546 flue gas Substances 0.000 claims abstract description 105
- 238000009826 distribution Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000005728 strengthening Methods 0.000 claims abstract description 11
- 239000000779 smoke Substances 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 238000005192 partition Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to the field of boiler equipment, in particular to a boiler energy-saving device and a boiler, comprising: the flue gas strengthening heat exchange tube is arranged in the water supply preheating module, and two ends of the flue gas strengthening heat exchange tube are respectively inserted into the flue gas distribution chamber and the flue gas collection chamber; the middle part of the air preheating module is arranged in the water supply preheating module so as to preheat cold air in the air preheating module through hot water after heat exchange in the water supply preheating module. The energy-saving device of the boiler has compact structure and small steel consumption; the traditional heat exchange mode of air and flue gas is changed, the water supply preheating module and the air preheating module are arranged in the same water space, the high-temperature flue gas heats the water supply of the boiler through the water supply preheating module, and the heated water supply and the air preheating module exchange heat to heat the combustion air of the boiler.
Description
Technical Field
The utility model relates to the field of boiler equipment, in particular to a boiler energy-saving device and a boiler.
Background
The boiler is a heat exchange device which converts chemical energy released by burning fuel (solid fuel, liquid fuel and gas fuel) into heat energy and outputs hot water or steam outwards, the boiler comprises two parts, namely a boiler and a boiler, the hot water or steam generated in the boiler can directly provide heat energy required by industrial production and people living, and the heat energy can also be converted into mechanical energy through a steam power device or the mechanical energy can be converted into electric energy through a generator.
The economizer and the air preheater are important parts in the boiler and are mainly used for waste heat recovery and utilization, namely, the heat of the tail smoke of the boiler is absorbed, the temperature of discharged smoke is reduced, and the efficiency of the boiler is improved; the boiler is arranged at the tail part of the boiler and is also called a tail heating surface. The economizer is used for heating water by utilizing the heat of tail smoke of the boiler, and the air preheater is used for heating air required by combustion by utilizing the heat of tail smoke.
The conventional economizer and air preheater are arranged in series by adopting a steel pipe type economizer and a pipe box type air preheater. The steel pipe type coal economizer absorbs the waste heat of flue gas outside a pipe through water supply in the steel pipe; the tube box type air preheater is characterized in that the flue gas is arranged in a tube, the air is arranged outside the tube, and the flue gas waste heat in the tube is absorbed through the air outside the tube. The disadvantage of using such a structure and arrangement of the economizer and air preheater is: firstly, the occupied area is large, and the metal consumption is large; when the boiler adopts a water supply mode of intermittent water supply, when water is not supplied in the combustion of the boiler, the heat of tail flue gas cannot be absorbed by the water supply, so that the temperature of the flue gas is increased, and the heat efficiency of the boiler is affected.
Disclosure of Invention
The utility model aims to provide an energy-saving device for a boiler and the boiler, which can effectively solve the problems in the prior art.
The aim of the utility model is achieved by the following technical scheme:
a boiler economizer comprising: the flue gas strengthening heat exchange tube is arranged in the water supply preheating module, and two ends of the flue gas strengthening heat exchange tube are respectively inserted into the flue gas distribution chamber and the flue gas collection chamber; the middle part of the air preheating module is arranged in the water supply preheating module so as to preheat cold air in the air preheating module through hot water after heat exchange in the water supply preheating module.
The water supply preheating module comprises a water chamber shell, wherein two ends of the water chamber shell are respectively and fixedly connected with the upper tube plate and the lower tube plate, and a heat exchange cavity is formed among the water chamber shell, the upper tube plate and the lower tube plate; one end of the water chamber shell is connected with the smoke distributing chamber, the other end of the water chamber shell is connected with the smoke collecting chamber, and two ends of the smoke reinforced heat exchange tube are respectively fixed on the upper tube plate and the lower tube plate.
The flue gas enhanced heat exchange tubes are arranged in a plurality, and the flue gas enhanced heat exchange tubes are uniformly and circumferentially arranged on the outer side of the air preheating module.
And a cold water inlet and a hot water outlet which are communicated with the heat exchange cavity are arranged on the water chamber shell, and the cold water inlet is positioned below the hot water outlet.
The water chamber is characterized in that a plurality of water retaining partition plates I and a plurality of water retaining partition plates II are arranged in the water chamber shell, the water retaining partition plates I and the water retaining partition plates II are alternately arranged in the water chamber shell at intervals, and a water flow channel is formed between the water retaining partition plates I and the water retaining partition plates II and the water chamber shell.
The flue gas reinforced heat exchange tube is arranged in the through holes of the water baffle plates I and the through holes of the water baffle plates II in a penetrating way.
The air preheating module comprises a cold air inlet pipeline, the middle part of the cold air inlet pipeline is fixed in the central through holes of the upper tube plate and the lower tube plate in a sealing way, and one end of the cold air inlet pipeline is communicated with an air rotation chamber fixed at the lower end of the lower tube plate; the flue gas collection chamber is communicated with one end of a plurality of air-enhanced heat exchange tubes, the middle parts of the plurality of air-enhanced heat exchange tubes are arranged in the heat exchange cavity in a penetrating way, and two ends of the plurality of air-enhanced heat exchange tubes are respectively fixed on the upper tube plate and the lower tube plate; the other ends of the air strengthening heat exchange tubes are communicated with an air collecting chamber fixed on the upper tube plate.
The air rotating chamber is positioned in the flue gas collecting chamber, and a low-temperature flue gas outlet is arranged on the flue gas collecting chamber; the air collecting chamber is positioned in the flue gas distribution chamber, and a high-temperature flue gas inlet is arranged on the flue gas distribution chamber.
The flue gas reinforced heat exchange tube comprises an external steel tube and an aluminum finned tube fixed in the external steel tube; the external steel pipes are fixed on the upper tube plate and the lower tube plate; the structure of the air-reinforced heat exchange tube is the same as that of the flue gas-reinforced heat exchange tube.
A boiler comprises a boiler body and any one of the boiler energy-saving devices, wherein a flue gas inlet of a flue gas distribution chamber in the boiler energy-saving device is connected with a flue gas outlet of the boiler body, and a hot air outlet of an air preheating module in the boiler energy-saving device is connected with an air inlet of a boiler burner.
The air collecting chamber is provided with a hot air outlet; and a cold air inlet is arranged on the cold air inlet pipeline.
The beneficial effects of the utility model are as follows:
the energy-saving device of the boiler has compact structure and small steel consumption; the heat exchange mode of traditional air and flue gas is changed, the water supply preheating module and the air preheating module are arranged in the same water space, the high-temperature flue gas heats the water supply of the boiler through the water supply preheating module, the heated water supply and the air preheating module perform heat exchange to heat the combustion air of the boiler, if the boiler adopts a discontinuous water supply control mode, the air preheating module can effectively absorb heat accumulated by water stagnation in a container under the condition that the boiler stops water supply in combustion, vaporization of water in the container is avoided, meanwhile, the stability of the temperature of discharged smoke is kept, continuous condensation of the flue gas can be kept, and the heat efficiency of the boiler is improved.
In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a boiler energy-saving device according to an embodiment of the present utility model;
FIG. 2 is a schematic structural diagram of a flue gas enhanced heat exchange tube according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a flue gas enhanced heat exchange tube provided by an embodiment of the present utility model;
fig. 4 is a schematic diagram of a flow direction of water during heat exchange of cold water in an energy saving device of a boiler according to an embodiment of the present utility model.
Icon: a hot air outlet 1; a cold air inlet duct 2; a cold air inlet 3; an air collection chamber 4; an air-reinforced heat exchange tube 5; a flue gas reinforced heat exchange tube 6; an upper tube sheet 7; a hot water outlet 8; a lower tube sheet 9; a low temperature flue gas outlet 10; a flue gas collection chamber 11; an air turning chamber 12; a cold water inlet 13; a water baffle I14; a water baffle II 15; a water chamber housing 16; a flue gas inlet 17; a flue gas distribution chamber 18; an outer steel pipe 19; an aluminum finned tube 20.
Detailed Description
In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The present utility model is described in further detail below with reference to the drawings and examples to enable those skilled in the art to practice the utility model by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
The utility model is described in further detail below with reference to fig. 1-4.
As shown in fig. 1 to 4, a boiler energy saving device includes: the flue gas strengthening heat exchange tube 6 is arranged in the water supply preheating module, and two ends of the flue gas strengthening heat exchange tube 6 are respectively inserted into the flue gas distribution chamber 18 and the flue gas collection chamber 11; the middle part of the air preheating module is arranged in the water supply preheating module so as to preheat cold air in the air preheating module through hot water after heat exchange in the water supply preheating module.
When the boiler energy-saving device is used, high-temperature flue gas at the tail of the boiler enters the flue gas distribution chamber 18, and the high-temperature flue gas entering the flue gas distribution chamber 18 sequentially flows through the plurality of flue gas reinforced heat exchange tubes 6 and the flue gas collecting chamber 11 and is finally discharged through the low-temperature flue gas outlet 10 of the flue gas collecting chamber 11; after the high-temperature flue gas enters the flue gas reinforced heat exchange tube 6, cold water in the water supply preheating module can be heated, so that boiler water supply is heated, and hot water after heat exchange in the water supply preheating module preheats cold air in the air preheating module, so that boiler combustion air is heated; the utility model has compact structure and small steel consumption; the traditional heat exchange mode of air and flue gas is changed, the water supply preheating module and the air preheating module are arranged in the same water space, the high-temperature flue gas heats the water supply of the boiler through the water supply preheating module, and the heated water supply and the air preheating module exchange heat to heat the combustion air of the boiler.
The water supply preheating module comprises a water chamber shell 16, wherein two ends of the water chamber shell 16 are respectively and fixedly connected with an upper tube plate 7 and a lower tube plate 9, and a heat exchange cavity is formed among the water chamber shell 16, the upper tube plate 7 and the lower tube plate 9; one end of the water chamber shell 16 is connected with the flue gas distribution chamber 18, the other end of the water chamber shell 16 is connected with the flue gas collecting chamber 11, and two ends of the flue gas reinforced heat exchange tube 6 are respectively fixed on the upper tube plate 7 and the lower tube plate 9.
The water chamber shell 16 is provided with a cold water inlet 13 and a hot water outlet 8 which are communicated with the heat exchange cavity, and the cold water inlet is positioned below the hot water outlet.
And a heat exchange cavity is formed among the water chamber shell 16, the upper tube plate 7 and the lower tube plate 9 in the water supply preheating module, when cold water is required to be subjected to heat exchange and heating, the cold water is fed into the heat exchange cavity through the cold water inlet 13, the cold water in the heat exchange cavity is heated through high-temperature flue gas in the flue gas enhanced heat exchange tube 6, and the heated hot water is discharged through the hot water outlet 8 for use.
The flue gas enhanced heat exchange tubes 6 are provided with a plurality of flue gas enhanced heat exchange tubes 6, and the flue gas enhanced heat exchange tubes 6 are uniformly arranged on the outer side of the air preheating module in a surrounding mode, so that the heating heat exchange effect of cold water and high-temperature flue gas in the flue gas enhanced heat exchange tubes 6 is improved.
The air preheating module comprises a cold air inlet pipeline 2, the middle part of the cold air inlet pipeline 2 is fixed in the central through holes of the upper tube plate 7 and the lower tube plate 9 in a sealing way, and one end of the cold air inlet pipeline 2 is communicated with an air rotary chamber 12 fixed at the lower end of the lower tube plate 9; the flue gas collection chamber 11 is communicated with one end of a plurality of air-enhanced heat exchange tubes 5, the middle parts of the plurality of air-enhanced heat exchange tubes 5 are arranged in the heat exchange cavity in a penetrating way, and two ends of the plurality of air-enhanced heat exchange tubes 5 are respectively fixed on the upper tube plate 7 and the lower tube plate 9; the other ends of the air-reinforced heat exchange tubes 5 are communicated with an air collecting chamber 4 fixed on an upper tube plate 7.
When the cold air is required to exchange heat, the cold air is fed through the cold air inlet pipeline 2, and the cold air sequentially circulates through the cold air inlet pipeline 2, the air rotating chamber 12 and the plurality of air strengthening heat exchange tubes 5, finally enters the air collecting chamber 4 through the plurality of air strengthening heat exchange tubes 5 and can be discharged through the hot air outlet 1 on the air collecting chamber 4; the cold water entering the heat exchange cavity is heated through the high-temperature flue gas in the flue gas enhanced heat exchange tube 6, the heated hot water can exchange heat and heat the cold air in the cold air inlet pipeline 2 and the air enhanced heat exchange tubes 5, if the boiler adopts a discontinuous water supply control mode, the air preheating module can effectively absorb heat accumulated due to water stagnation in the container under the condition that the boiler stops water supply in combustion, vaporization of the water in the container is avoided, meanwhile, the stability of the flue gas temperature is kept, continuous condensation of the flue gas can be kept, and the heat efficiency of the boiler is improved.
A plurality of water baffle plates I14 and a plurality of water baffle plates II 15 are alternately arranged in the water chamber shell 16 at intervals, the outer ends of the water baffle plates I14 are fixed on the inner side surface of the water chamber shell 16, and a plurality of inner circulation channels are formed between the inner ends of the water baffle plates I14 and the cold air inlet pipeline 2; the inner ends of a plurality of water baffle plates II 15 are fixed on the cold air inlet pipeline 2, and a plurality of outer circulation channels are formed between the outer ends of the water baffle plates II 15 and the inner side surface of the water chamber shell 16. A plurality of outer circulation channels are formed between the outer ends of the water retaining baffles II 15 and the inner side surface of the water chamber shell 16, so that water flow entering the heat exchange cavity through the cold water inlet 13 can be changed and circulated for a plurality of times, the water flow is fully contacted with the flue gas reinforced heat exchange tube 6, and the heat exchange effect is ensured.
The flue gas enhanced heat exchange tube 6 is arranged in the through holes of the water baffle plates I14 and the water baffle plates II 15 in a penetrating way, so that the stability of the water baffle plates I14 and the water baffle plates II 15 after being installed can be improved.
The air rotary chamber 12 is positioned in the flue gas collecting chamber 11, and a low-temperature flue gas outlet 10 is arranged on the flue gas collecting chamber 11, so that low-temperature flue gas is conveniently discharged; the air collecting chamber 4 is positioned in the flue gas distribution chamber 18, and the flue gas distribution chamber 18 is provided with a high-temperature flue gas inlet 17, so that high-temperature flue gas can be conveniently fed.
The flue gas reinforced heat exchange tube 6 comprises an outer steel tube 19 and an aluminum finned tube 20 fixed in the outer steel tube 19; the outer steel tubes 19 are fixed on the upper tube plate 7 and the lower tube plate 9; the structure of the air-reinforced heat exchange tube 5 is the same as that of the flue gas-reinforced heat exchange tube 6. The flue gas enhanced heat exchange tube 6 is arranged in a structure, good in heat exchange effect, high in heat exchange efficiency and stable in structure.
A boiler comprising a boiler body and any one of the above-mentioned boiler energy saving devices, wherein a flue gas inlet 17 of a flue gas distribution chamber 18 in the boiler energy saving device is connected with a flue gas outlet of the boiler body, and a hot air outlet 1 of an air preheating module in the boiler energy saving device is connected with an air inlet of a boiler burner in the boiler body.
The air collecting chamber 4 is provided with a hot air outlet 1 for discharging hot air after heat exchange; the cold air inlet pipeline is provided with a cold air inlet 3 for feeding cold air requiring heat exchange.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. A boiler economizer, comprising: the flue gas strengthening heat exchange device comprises a flue gas distribution chamber (18) and a flue gas collection chamber (11), wherein one end of the flue gas strengthening heat exchange tube (6) is inserted into the flue gas distribution chamber (18) and the flue gas collection chamber (11); the middle part of the air preheating module is arranged in the water supply preheating module so as to preheat cold air in the air preheating module through hot water after heat exchange in the water supply preheating module.
2. The boiler energy-saving device according to claim 1, wherein the water supply preheating module comprises a water chamber shell (16), two ends of the water chamber shell (16) are fixedly connected with the upper tube plate (7) and the lower tube plate (9) respectively, and a heat exchange cavity is formed among the water chamber shell (16), the upper tube plate (7) and the lower tube plate (9); one end of the water chamber shell (16) is connected with the smoke distribution chamber (18), the other end of the water chamber shell (16) is connected with the smoke collection chamber (11), and two ends of the smoke reinforced heat exchange tube (6) are respectively fixed on the upper tube plate (7) and the lower tube plate (9).
3. The boiler energy-saving device according to claim 2, wherein the plurality of flue gas enhanced heat exchange tubes (6) are arranged, and the plurality of flue gas enhanced heat exchange tubes (6) are uniformly and circumferentially arranged outside the air preheating module.
4. A boiler economizer according to claim 3, wherein the water chamber housing (16) is provided with a cold water inlet (13) and a hot water outlet (8) communicating with the heat exchange chamber, the cold water inlet being located below the hot water outlet.
5. A boiler energy saving device according to claim 3, characterized in that the air preheating module comprises a cold air inlet pipeline (2), the middle part of the cold air inlet pipeline (2) is fixed in the central through holes of the upper tube plate (7) and the lower tube plate (9) in a sealing way, and one end of the cold air inlet pipeline (2) is communicated with an air turning chamber (12) fixed at the lower end of the lower tube plate (9); the flue gas collection chamber (11) is communicated with one ends of a plurality of air-enhanced heat exchange tubes (5), the middle parts of the plurality of air-enhanced heat exchange tubes (5) are arranged in the heat exchange cavity in a penetrating way, and two ends of the plurality of air-enhanced heat exchange tubes (5) are respectively fixed on the upper tube plate (7) and the lower tube plate (9); the other ends of the air-reinforced heat exchange tubes (5) are communicated with an air collecting chamber (4) fixed on the upper tube plate (7).
6. The boiler energy-saving device according to claim 5, wherein a plurality of water baffle plates I (14) and a plurality of water baffle plates II (15) are alternately arranged in the water chamber shell (16), the outer ends of the water baffle plates I (14) are fixed on the inner side surface of the water chamber shell (16), and a plurality of inner circulation channels are formed between the inner ends of the water baffle plates I (14) and the cold air inlet pipeline (2); the inner ends of a plurality of water baffle plates II (15) are fixed on the cold air inlet pipeline (2), and a plurality of outer circulation channels are formed between the outer ends of the water baffle plates II (15) and the inner side surface of the water chamber shell (16).
7. The energy-saving device for the boiler according to claim 6, wherein the flue gas reinforced heat exchange tube (6) is arranged in the through holes of the water baffle plates I (14) and the through holes of the water baffle plates II (15) in a penetrating way.
8. The boiler energy-saving device according to claim 5, wherein the air swivel chamber (12) is positioned in a flue gas collecting chamber (11), and a low-temperature flue gas outlet (10) is arranged on the flue gas collecting chamber (11); the air collecting chamber (4) is positioned in the flue gas distribution chamber (18), and a high-temperature flue gas inlet (17) is arranged on the flue gas distribution chamber (18).
9. A boiler energy saving device according to claim 5, characterized in that the flue gas reinforced heat exchange tube (6) comprises an outer steel tube (19) and an aluminium finned tube (20) fixed inside the outer steel tube (19); the outer steel tube (19) is fixed on the upper tube plate (7) and the lower tube plate (9); the structure of the air-reinforced heat exchange tube (5) is the same as that of the flue gas-reinforced heat exchange tube (6).
10. A boiler characterized by comprising a boiler body and the boiler energy-saving device as claimed in any one of claims 1-9, wherein a flue gas inlet (17) of a flue gas distribution chamber (18) in the boiler energy-saving device is connected with a flue gas outlet of the boiler body, and a hot air outlet (1) of an air preheating module in the boiler energy-saving device is connected with an air inlet of a boiler burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322172122.6U CN220506757U (en) | 2023-08-14 | 2023-08-14 | Boiler economizer and boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322172122.6U CN220506757U (en) | 2023-08-14 | 2023-08-14 | Boiler economizer and boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220506757U true CN220506757U (en) | 2024-02-20 |
Family
ID=89868197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322172122.6U Active CN220506757U (en) | 2023-08-14 | 2023-08-14 | Boiler economizer and boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220506757U (en) |
-
2023
- 2023-08-14 CN CN202322172122.6U patent/CN220506757U/en active Active
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