CN210532430U - Air preheating device - Google Patents
Air preheating device Download PDFInfo
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- CN210532430U CN210532430U CN201921532448.2U CN201921532448U CN210532430U CN 210532430 U CN210532430 U CN 210532430U CN 201921532448 U CN201921532448 U CN 201921532448U CN 210532430 U CN210532430 U CN 210532430U
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- air
- flue gas
- box
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses an air preheating device, which comprises a supporting part, an air box, a smoke box, an air pipeline and a smoke pipeline; the air box is provided with an air inlet and an air outlet which are both communicated with the inner cavity of the air box; the flue gas inlet and the flue gas outlet are both communicated with the inner cavity of the flue gas box; both ends of the air pipeline are communicated with the inner cavity of the air box, and the air pipeline penetrates through the smoke box; both ends of the flue gas pipeline are communicated with the inner cavity of the flue gas box, and the flue gas pipeline penetrates through the air box; the air box and the smoke box are both arranged on the supporting part. The scheme can solve the problem that the air preheating device in the background technology has poor air preheating effect.
Description
Technical Field
The utility model relates to an air preheating technical field especially relates to an air preheating device.
Background
The air preheating device is a device for utilizing the heat of the flue gas in the tail flue of the boiler, and the flue gas in the tail flue of the boiler passes through the radiating fins inside the air preheating device, so that the air before entering the boiler is preheated to a certain temperature.
The air preheating device is mainly used for a coal-fired boiler, the application in the boiler is generally a three-chamber type, the air preheating device slowly rotates when in use, a flue gas inlet and an air inlet are unchanged, flue gas in a flue at the tail part of the boiler enters the flue gas side of the air preheating device through the flue gas inlet and is then discharged, and a radiating fin absorbing heat of the flue gas rotates to the air side along with the air preheating device to transfer the heat to air, so that the temperature of the air entering the boiler is increased at first, the average temperature in the boiler is also increased, and the radiation heat transfer in the boiler can be enhanced; secondly, the air with higher temperature can accelerate the drying, firing and burning processes of the fuel, and ensure the burning stability in the boiler, thereby improving the burning efficiency; finally, the air preheating device can utilize the waste heat of the flue gas, reduce the heat loss caused by smoke discharge, and further can improve the thermal efficiency of the boiler.
However, in the specific use process of the air preheating device, the heat-absorbing heat radiating fins need to rotate to the air side, and in the rotating process, the heat on the heat radiating fins is easy to dissipate, so that the heat conversion efficiency is low, when the heat radiating fins rotate to the smoke side to absorb the heat, the air in the air side is difficult to obtain an effective heat insulation effect, the heat insulation effect of the air preheating device is poor, and finally the air preheating device is poor in air preheating effect.
Meanwhile, when the dust in the flue gas pipeline is cleaned by the conventional air preheating device, too much time is consumed, so that the preheating device cannot normally work, and the working efficiency of the boiler is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an air preheating device to solve the air preheating device that describes in the background art and have the relatively poor problem of effect of preheating to the air.
In order to solve the problem, the utility model discloses a following technical scheme:
an air preheating device comprises a supporting part, an air box, a smoke box, an air pipeline and a smoke pipeline; wherein: the air box is provided with an air inlet and an air outlet, and the air inlet and the air outlet are both communicated with the inner cavity of the air box; the flue gas box is provided with a flue gas inlet and a flue gas outlet, and the flue gas inlet and the flue gas outlet are both communicated with the inner cavity of the flue gas box; both ends of the air pipeline are communicated with the inner cavity of the air box, and the air pipeline penetrates through the smoke box; both ends of the flue gas pipeline are communicated with the inner cavity of the flue gas box, and the flue gas pipeline penetrates through the air box; the air box and the smoke box are both arranged on the supporting part.
Preferably, in the air preheating device, a first partition plate is arranged in the air box, and the first partition plate divides an inner cavity of the air box into an air inlet chamber and an air outlet chamber; the air inlet is communicated with the air inlet chamber, and the air outlet is communicated with the air outlet chamber; one end of the air pipeline is communicated with the air inlet chamber, and the other end of the air pipeline is communicated with the air outlet chamber.
Preferably, in the air preheating device, a second partition plate is arranged in the flue gas box, and the second partition plate divides an inner cavity of the flue gas box into a flue gas inlet chamber and a flue gas outlet chamber; the flue gas inlet is communicated with the flue gas inlet chamber, and the flue gas outlet is communicated with the flue gas outlet chamber; one end of the flue gas pipeline is communicated with the flue gas inlet chamber, and the other end of the flue gas pipeline is communicated with the flue gas outlet chamber.
Preferably, in the air preheating device, the air preheating device further includes a first silencing and damping plate, and the inner wall of the air tank is provided with a plurality of the first silencing and damping plates at intervals.
Preferably, in the air preheating device, the air preheating device further includes a second silencing and damping plate, and the inner wall of the flue gas box is provided with a plurality of second silencing and damping plates at intervals.
Preferably, in the air preheating device, the air preheating device further comprises a dust removal box, and the flue gas pipeline is communicated with the dust removal box.
Preferably, in the air preheating device, an insulating layer is arranged on the inner wall of the dust removal box, and a dust filtering net is arranged in an inner side channel of the dust removal box.
Preferably, in the air preheating device, the dust filter screen includes a plurality of dust filter portions, and the plurality of dust filter portions are arranged in a staggered manner in the flowing direction of the flue gas in the dust removal box to form a stepped structure.
Preferably, in the air preheating device, the support part includes a support frame, a support leg and a threaded connector, the air tank and the flue gas tank are both disposed on the support frame, the support leg is provided with a plurality of threaded holes, the support frame is provided with a through hole and a chute, one end of the threaded connector penetrates through the through hole to be in threaded fit with the threaded holes, and the support leg is in sliding fit with the chute.
Preferably, in the air preheating device, the air box has a first end surface and a first peripheral surface, the air inlet and the air outlet are both disposed on the first end surface, and the flue gas duct penetrates through the first peripheral surface; the flue gas case has second terminal surface and second global, the flue gas air inlet with the flue gas outlet all sets up the second terminal surface, air conduit runs through the second global.
The utility model discloses an air preheating device's technological effect as follows:
in the air preheating device disclosed by the embodiment of the utility model, both ends of the air pipeline are communicated with the inner cavity of the air box, and the air pipeline runs through the smoke box, so that the air entering the air box through the air inlet can enter the smoke box through the air pipeline, and the smoke in the smoke box is subjected to heat exchange with the air, thereby realizing the preheating of the air, increasing the heat transfer efficiency between the smoke and the air, and further ensuring that the air preheating device disclosed by the embodiment of the utility model has better preheating effect on the air; the both ends of flue gas pipeline all communicate with the inner chamber of flue gas case, and the flue gas pipeline runs through the air box, can make the flue gas enter into the air box through flue gas pipeline, preheats the air in the air box, and this kind of scheme makes thermal transmission more direct to reduce thermal scattering and disappearing, avoid the heat to scatter and disappear to the external world too much, and then improve the thermal efficiency of boiler.
It is thus clear that compare in the background art air preheating device say, the utility model discloses the air preheating device that the embodiment discloses can preheat the air betterly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings used in the description of the embodiments or the background art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of an air preheating device disclosed in an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a cross-sectional view of the perspective structure of FIG. 1;
FIG. 5 is a cross-sectional view of another perspective structure of FIG. 1;
fig. 6 is a structural section view of a dust removal box disclosed in the embodiment of the present invention.
Description of reference numerals:
100-supporting part, 110-supporting frame, 120-supporting leg and 130-threaded connecting piece;
200-air box, 210-air inlet, 220-air outlet, 230-first partition, 240-air inlet chamber, 250-air outlet chamber;
300-a flue gas box, 310-a flue gas inlet, 320-a flue gas outlet, 330-a second clapboard, 340-a flue gas inlet chamber and 350-a flue gas outlet chamber;
400-an air duct;
500-flue gas duct;
600-a first sound and shock absorbing plate;
700-a second acoustic damping panel;
800-dust removal box, 810-heat preservation layer, 820-dust filtration net and 821-dust filtration part.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and 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.
The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 6, an embodiment of the present invention discloses an air preheating device, which includes a supporting portion 100, an air tank 200, a flue gas tank 300, an air duct 400, and a flue gas duct 500.
Wherein, the supporting portion 100 is a base component of the air preheating device, and the supporting portion 100 can provide a mounting base for other components of the air preheating device. In the embodiment of the present invention, the air box 200 and the flue gas box 300 are both disposed on the support portion 100.
The air box 200 is a container for containing air, and specifically, the air box 200 is provided with an air inlet 210 and an air outlet 220, the air inlet 210 and the air outlet 220 are both communicated with an inner cavity of the air box 200, air enters the air box 200 through the air inlet 210 to facilitate preheating of the air, and air with higher temperature after preheating can enter a furnace cavity through the air outlet 220, so that the heat efficiency of the boiler can be improved.
The flue gas box 300 is provided with a flue gas inlet 310 and a flue gas outlet 320, the flue gas inlet 310 and the flue gas outlet 320 are both communicated with the inner cavity of the flue gas box 300, flue gas in a flue at the tail part of the boiler enters the flue gas box 300 through the flue gas inlet 310 so as to conveniently transfer heat in the flue gas to the air, and the flue gas with lower temperature after heat transfer can be discharged through the flue gas outlet 320. In a preferred embodiment, the flue gas outlet 320 is communicated with a flue gas treatment system, and the flue gas discharged from the flue gas outlet 320 enters the flue gas treatment system for desulfurization, denitration and other treatments, so that the flue gas discharged does not pollute the outside atmosphere, thereby achieving the purpose of protecting the environment.
In a more preferable scheme, the inner cavity walls of the air box 200 and the smoke box 300 are provided with heat preservation parts, the heat preservation parts can reduce the heat emission amount in smoke and air, and the heat preservation parts can be polyurethane foam, extruded sheets or benzene sheets.
Both ends of the air pipeline 400 are communicated with the inner cavity of the air box 200, the air pipeline 400 penetrates through the smoke box 300, specifically, the air in the air box 200 can exchange heat with smoke in the smoke box 300 through the air pipeline 400, and therefore the air preheating device preheats the air.
Both ends of the flue gas pipeline 500 are communicated with the inner cavity of the flue gas box 300, and the flue gas pipeline 500 penetrates through the air box 200, specifically, flue gas in the flue gas box 300 can also exchange heat with air in the air box 200 from the flue gas pipeline 500 to the air box 200, so that the air preheating device has at least two heat transfer paths, and the heat transfer efficiency is improved. In a more preferable scheme, the air tank 200, the flue gas tank 300, the air pipeline 400 and the flue gas pipeline 500 are made of stainless steel, so that the phenomenon that moisture in air and flue gas causes the air tank 200, the flue gas tank 300, the air pipeline 400 and the flue gas pipeline 500 to rust, and leakage holes are formed in the air tank 200, the flue gas tank 300, the air pipeline 400 and the flue gas pipeline 500, so that heat in the flue gas is dissipated.
In the air preheating device disclosed in the embodiment of the present invention, both ends of the air pipeline 400 are both communicated with the inner cavity of the air box 200, and the air pipeline 400 runs through the flue gas box 300, so that the air entering the air box 200 through the air inlet 210 can enter the flue gas box 300 through the air pipeline 400, and the flue gas inside the flue gas box 300 exchanges heat with the air, thereby realizing the preheating of the air, and increasing the heat transfer efficiency between the flue gas and the air, thereby making the preheating device disclosed in the embodiment of the present invention have a better preheating effect on the air; the both ends of flue gas pipeline 500 all communicate with the inner chamber of flue gas case 300, and flue gas pipeline 500 runs through air tank 200, can make the flue gas enter into air tank 200 through flue gas pipeline 500 in, preheats the air in air tank 200, and this kind of scheme makes thermal transmission more direct to reduce thermal scattering and disappearing, avoid the heat to scatter and disappear to the external world too much, and then improve the thermal efficiency of boiler.
It is thus clear that compare in the background art air preheating device say, the utility model discloses the air preheating device that the embodiment discloses can preheat the air betterly.
The embodiment of the utility model provides an in, be provided with air inlet 210 and air outlet 220 on the air tank 200, air inlet 210 and air outlet 220 all communicate with the inner chamber of air tank 200, probably lead to entering into the lower air of temperature in air tank 200 through air inlet 210 and have not preheated the uniform temperature yet, just directly discharge outside air tank 200 through air outlet 220, have reduced the thermal efficiency of boiler. Based on this, in a preferable scheme, a first partition plate 230 may be disposed in the air tank 200, and the first partition plate 230 can divide an inner cavity of the air tank 200 into an air inlet chamber 240 and an air outlet chamber 250; the air inlet 210 communicates with the air inlet chamber 240 and the air outlet 220 communicates with the air outlet chamber 250; one end of the air pipeline 400 is communicated with the air inlet chamber 240, and the other end is communicated with the air outlet chamber 250, so that the air with lower temperature entering the air box 200 through the air inlet 210 is positioned in the air inlet chamber 240, the air in the air inlet chamber 240 can enter the smoke box 300 through the air pipeline 400 to exchange heat with smoke, the air is preheated, and the preheated air enters the air outlet chamber 250 and can enter the oven cavity through the air outlet 220 communicated with the air outlet chamber 250; meanwhile, the flue gas can also exchange heat with air in the air box 200 through the flue gas pipeline 500, and for the air in the air outlet chamber 250, the flue gas in the air box 200 through the flue gas pipeline 500 plays a role in heat preservation of the air more.
Of course, the flue gas box may also have similar problems, and the flue gas entering the flue gas box through the flue gas inlet 310 has not yet been heat-exchanged with air or has a poor degree of heat-exchange with air, and is directly discharged through the flue gas outlet 320, so that the heat carried by the flue gas is greatly wasted, and the thermal efficiency of the boiler is low. Therefore, in a preferable scheme, a second partition plate 330 may be disposed in the flue gas box 300, and the second partition plate 330 divides the inner cavity of the flue gas box 300 into a flue gas inlet chamber 340 and a flue gas outlet chamber 350; the flue gas inlet 310 is communicated with the flue gas inlet chamber 340, and the flue gas outlet 320 is communicated with the flue gas outlet chamber 350; flue gas pipeline 500's one end and flue gas inlet chamber 340 intercommunication, the other end and flue gas outlet chamber 350 intercommunication, this scheme can make to be located flue gas inlet chamber 340 flue gas and enter into flue gas outlet chamber 350 after accomplishing heat exchange with the air to a great extent, thereby discharge through the flue gas outlet 320 with flue gas outlet chamber 350 intercommunication, it is specific, the flue gas can carry out heat exchange with the air through flue gas pipeline 500 in to air box 200, can preheat the air through in air piping 400 in flue gas box 300, thereby make the heat in the flue gas by abundant absorption, and then can improve the thermal efficiency of boiler.
Generally, air may flow faster in the air tank 200, which may cause parts of the components of the air tank 200 to vibrate rapidly, thereby generating a lot of noise, affecting physical and psychological health of workers or causing noise pollution to the surrounding environment. Therefore, in a preferred scheme, the air preheating device further comprises a first silencing and damping plate 600, the inner wall of the air box 200 can be provided with a plurality of first silencing and damping plates 600 at intervals, the first silencing and damping plate 600 can reduce noise generated in the air box 200, noise damage to workers is avoided, and safety of the air preheating device is improved.
Also, the smoke in the smoke box 300 may flow faster, and thus a great amount of noise may be generated in the smoke box 300. In a preferred embodiment, the air preheating device further includes a second silencing and damping plate 700, a plurality of second silencing and damping plates 700 can be spaced apart from each other on the inner wall of the flue gas box 300, and the second silencing and damping plates 700 can reduce the noise generated in the flue gas box 300.
Generally, flue gas in a flue at the tail of the boiler carries more dust, and the air preheating device needs to be cleaned frequently due to the more dust, so that more labor cost is wasted. Based on this, in comparatively preferred scheme, air preheating device can also include dust removal case 800, the intercommunication is provided with dust removal case 800 on the flue gas pipeline 500, make the flue gas in the flue gas pipeline 500 filtered after passing through dust removal case 800, with the dust volume that carries in the reduction flue gas, this scheme can make the dust in the flue gas accumulate in dust removal case 800 more, only need clear up dust in dust removal case 800 can, with reduce the clearance work load to air preheating device inside, save a large amount of costs of labor, and simultaneously, can also reduce the dust that carries in the flue gas emission process and to the pollution effect of ambient air, and then play the effect of environmental protection.
Heat from the flue gas may be dissipated in the dust box 800. Therefore, in a preferred scheme, the inner wall of the dust removing box 800 can be provided with the heat insulating layer 810, the inner side channel of the dust removing box 800 can be provided with the dust filtering net 820, and the heat insulating layer 810 can reduce the heat in the flue gas and is dissipated in the dust removing box 800, so that the heat in the flue gas can be fully utilized by the air preheating device, and the heat efficiency of the boiler is further improved.
In a more preferable scheme, the dust filter 820 may be stepped, the dust filter 820 may include a plurality of dust filter parts 821, and the plurality of dust filter parts 821 may be sequentially arranged in a staggered manner in a flow direction of flue gas in the dust removing box 800 to form a stepped structure, so that the stepped dust filter 820 may increase a contact area with the flue gas, and thus the dust removing effect of the dust removing box 800 is more excellent.
In the embodiment of the present invention, the supporting portion 100 can support the air box 200 and the smoke box 300, and the structural form of the supporting portion 100 is various, which is not limited in the embodiment of the present invention. In a preferred scheme, the supporting portion 100 may be a lifting supporting portion, specifically, the supporting portion 100 may include a supporting frame 110, a supporting leg 120 and a threaded connection member 130, both the air box 200 and the smoke box 300 may be disposed on the supporting frame 110, a plurality of threaded holes may be disposed on the supporting leg 120, a through hole and a sliding groove may be disposed on the supporting frame 110, one end of the threaded connection member 130 passes through the through hole and is in threaded fit with the threaded hole, the supporting leg 120 is in sliding fit with the sliding groove, the supporting portion 100 may be a lifting supporting portion, so that the supporting portion 100 may adjust heights of the air box 200 and the smoke box 300 disposed thereon, and thus adaptability of the air preheating device to other components (e.g., an economizer) is improved.
In order to further improve the efficiency of heat exchange between the flue gas and the air, the flow path of the flue gas and the flow path of the air can be crossed. Therefore, in a preferable scheme, the air box 200 may have a first end surface and a first circumferential surface, the air inlet 210 and the air outlet 220 may be both disposed on the first end surface, and the flue gas duct 500 penetrates through the first circumferential surface, so that a path along which air flows in the air box 200 and a path along which flue gas flows intersect with each other, thereby improving heat exchange efficiency between the flue gas and air, and improving utilization rate of heat in the flue gas by the air preheating device.
Meanwhile, the smoke box 300 may also have a second end surface and a second circumferential surface, the smoke inlet 310 and the smoke outlet 320 may be both disposed on the second end surface, and the air duct 400 penetrates the second circumferential surface, so that the path along which the air flows in the smoke box 300 and the path along which the smoke flows are intersected with each other, thereby improving the heat exchange efficiency between the smoke and the air. In a more preferred embodiment, the air box 200 and the flue gas box 300 are both configured as described above.
In the present specification, the respective preferred embodiments are only described with emphasis on differences from other embodiments, and the respective preferred embodiments may be arbitrarily combined as long as they do not conflict with each other, and the embodiments formed by combining are also within the scope disclosed in the present specification.
The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various combinations of these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An air preheating device is characterized by comprising a supporting part (100), an air box (200), a smoke box (300), an air pipeline (400) and a smoke pipeline (500); wherein:
the air box (200) is provided with an air inlet (210) and an air outlet (220), and the air inlet (210) and the air outlet (220) are both communicated with the inner cavity of the air box (200);
the flue gas box (300) is provided with a flue gas inlet (310) and a flue gas outlet (320), and the flue gas inlet (310) and the flue gas outlet (320) are both communicated with the inner cavity of the flue gas box (300);
both ends of the air pipeline (400) are communicated with the inner cavity of the air box (200), and the air pipeline (400) penetrates through the smoke box (300);
both ends of the smoke pipeline (500) are communicated with the inner cavity of the smoke box (300), and the smoke pipeline (500) penetrates through the air box (200);
the air tank (200) and the smoke tank (300) are both disposed on the support portion (100).
2. The air preheating device according to claim 1, wherein a first partition plate (230) is provided in the air tank (200), and the first partition plate (230) divides an inner cavity of the air tank (200) into an air inlet chamber (240) and an air outlet chamber (250);
the air inlet (210) communicates with the air inlet chamber (240) and the air outlet (220) communicates with the air outlet chamber (250);
one end of the air pipeline (400) is communicated with the air inlet chamber (240), and the other end is communicated with the air outlet chamber (250).
3. The air preheating device according to claim 1, wherein a second partition plate (330) is arranged in the flue gas box (300), and the second partition plate (330) divides the inner cavity of the flue gas box (300) into a flue gas inlet chamber (340) and a flue gas outlet chamber (350);
the flue gas inlet (310) is communicated with the flue gas inlet chamber (340), and the flue gas outlet (320) is communicated with the flue gas outlet chamber (350);
one end of the flue gas pipeline (500) is communicated with the flue gas inlet chamber (340), and the other end of the flue gas pipeline is communicated with the flue gas outlet chamber (350).
4. The air preheating device according to claim 1, further comprising a first silencing and damping plate (600), wherein a plurality of the first silencing and damping plates (600) are spaced apart from each other on an inner wall of the air tank (200).
5. The air preheating device according to claim 1, further comprising a second silencing and damping plate (700), wherein a plurality of the second silencing and damping plates (700) are spaced apart from each other on an inner wall of the flue gas box (300).
6. The air preheating device according to claim 1, further comprising a dust removal box (800), wherein the dust removal box (800) is communicated with the flue gas duct (500).
7. The air preheating device according to claim 6, wherein an insulating layer (810) is arranged on the inner wall of the dust removal box (800), and a dust filtering net (820) is arranged in the inner channel of the dust removal box (800).
8. The air preheating device according to claim 7, wherein the dust filter net (820) comprises a plurality of dust filter parts (821), and the plurality of dust filter parts (821) are sequentially arranged in a staggered manner in the flow direction of flue gas in the dust removal box (800) to form a stepped structure.
9. The air preheating device according to claim 1, wherein the supporting portion (100) comprises a supporting frame (110), a supporting leg (120) and a threaded connector (130), the air tank (200) and the flue gas tank (300) are both arranged on the supporting frame (110), a plurality of threaded holes are formed in the supporting leg (120), a through hole and a sliding groove are formed in the supporting frame (110), one end of the threaded connector (130) penetrates through the through hole to be in threaded fit with the threaded holes, and the supporting leg (120) is in sliding fit with the sliding groove.
10. An air preheating arrangement according to claim 1, characterized in that the air tank (200) has a first end face and a first circumferential face, the air inlet (210) and the air outlet (220) being arranged at the first end face, the flue gas duct (500) extending through the first circumferential face;
the flue gas box (300) is provided with a second end face and a second peripheral face, the flue gas inlet (310) and the flue gas outlet (320) are arranged on the second end face, and the air pipeline (400) penetrates through the second peripheral face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921532448.2U CN210532430U (en) | 2019-09-16 | 2019-09-16 | Air preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921532448.2U CN210532430U (en) | 2019-09-16 | 2019-09-16 | Air preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210532430U true CN210532430U (en) | 2020-05-15 |
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ID=70605349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921532448.2U Expired - Fee Related CN210532430U (en) | 2019-09-16 | 2019-09-16 | Air preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210532430U (en) |
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2019
- 2019-09-16 CN CN201921532448.2U patent/CN210532430U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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Granted publication date: 20200515 Termination date: 20210916 |