CN218914995U

CN218914995U - Air preheater for natural gas heat supply boiler

Info

Publication number: CN218914995U
Application number: CN202222380468.0U
Authority: CN
Inventors: 陈冰杰
Original assignee: Beijing Beihuo Lvgu Heating Technology Development Co ltd
Current assignee: Beijing Beihuo Lvgu Heating Technology Development Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-04-25
Anticipated expiration: 2032-09-08

Abstract

The utility model discloses an air preheater for a natural gas heating boiler, which comprises a filter box, wherein a flue connecting pipe is arranged on the outer wall of one side of the filter box, a filter element is arranged on the inner wall of the filter box, a hot air connecting pipe is arranged on the outer wall of the other side of the filter box, an air duct is arranged on the outer wall of the hot air connecting pipe, a bottom cover is embedded at the top end of the air duct, a preheating box is arranged at the top of the bottom cover, a diversion space is formed between the bottom cover and the preheating box, a top cover is arranged at the top of the preheating box, and a box door is arranged at the top of the top cover. According to the utility model, the filter box and the filter core are arranged, the two ends of the flue connecting pipe are respectively connected with the flue at the tail part of the boiler and the filter box, the flue gas passes through the filter box, the smoke dust and the dust are remained on the filter core, and the flue gas becomes clean hot air which is shunted from the inside of the shunting space to the inside of the radiating pipe, so that the radiating pipe does not need to be cleaned frequently, and the time and the labor are saved.

Description

Air preheater for natural gas heat supply boiler

Technical Field

The utility model relates to the technical field of air preheaters, in particular to an air preheater for a natural gas heat supply boiler.

Background

The natural gas heating boiler heats water in the boiler through gas, the heated water is supplied to people for heating, in the whole process, in order to save energy, flue gas in a tail flue of the boiler enters the air preheater through being recycled, cold air in front of the boiler is preheated to a heating surface with a certain temperature, the heat exchange performance of the boiler is improved, and energy consumption is reduced, however, most of the existing air preheaters have a certain defect.

The air preheater in the prior art has the following defects:

as a great amount of substances such as smoke dust exist in the smoke gas at the tail part of the boiler, the smoke dust and dust adhere to the radiating pipes or the radiating fins in the air preheater after the substances enter the air preheater, the substances can reduce the heat exchange efficiency of the air preheater, and the existing air preheater can not effectively reduce the smoke dust entering the radiating pipes or the radiating fins in the air preheater, so that the air preheater is required to be cleaned frequently, time and labor are wasted, and heat supply is delayed.

Disclosure of Invention

The utility model aims to provide an air preheater for a natural gas heating boiler, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the utility model provides the following technical scheme that the air preheater for the natural gas heating boiler comprises a filter box, wherein a flue connecting pipe is arranged on the outer wall of one side of the filter box, a filter core is arranged on the inner wall of the filter box, and a hot air connecting pipe is arranged on the outer wall of the other side of the filter box; the air flue is installed to the outer wall of hot air connecting pipe, the bottom cover is installed in the top gomphosis in wind flue, the preheating box is installed at the top of bottom cover, form the reposition of redundant personnel space between bottom cover and the preheating box, the top cover is installed at the top of preheating box, the chamber door is installed at the top of top cover, form between preheating box, top cover and the chamber door and assemble the space.

Preferably, the inner wall of the preheating box is provided with a plurality of groups of radiating pipes which are arranged at equal intervals, the inner space of each radiating pipe is communicated with the shunting space and the converging space, and the outer wall of each radiating pipe is provided with a heat absorption tube.

Preferably, a cold air connecting pipe is arranged on the outer wall of one side of the preheating box, a connecting ring is arranged on the inner wall of the cold air connecting pipe, a filter plate is arranged on one side of the connecting ring, and four groups of screws which are arranged in a rectangular mode are arranged on the front face of the filter plate.

Preferably, the bellows is installed to the other side of preheating cabinet, the fan frame is installed to the inner wall of bellows, the exhaust fan is installed at the top of fan frame, the backflow connecting pipe is installed to the outer wall of bellows.

Preferably, the exhaust pipe is installed at the top of the case cover, and two groups of handles arranged side by side are installed at the top of the case cover.

Preferably, the front of the filter box is provided with a box door through a hinge, and the bottom of the filter box is provided with four groups of bases which are arranged in a rectangular mode.

Preferably, four groups of support columns which are arranged in a rectangular mode are arranged at the bottom of the preheating box, a support plate is arranged at the bottom of each support column, and the top of each support plate is connected with the bottom of the base.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the filter box and the filter core are arranged, the two ends of the flue connecting pipe are respectively connected with the flue at the tail part of the boiler and the filter box, the flue gas passes through the filter box, the smoke dust and the dust are remained on the filter core, the flue gas becomes clean hot air, the clean hot air is shunted into the inner part of the radiating pipe from the inner part of the shunting space, and most of the smoke dust and the dust in the flue gas are filtered in the filter box, so that a lot of smoke dust and dust can not be accumulated in the inner part of the radiating pipe for a long time, the radiating pipe is not required to be cleaned frequently, and the time and the labor are saved.

2. According to the utility model, the exhaust fan is arranged, and the exhaust fan discharges the hot air in the preheating box to the backflow connecting pipe for preheating the heating surface, so that the hot air in the preheating box is prevented from flowing out of the cold air connecting pipe and being wasted, and the heat exchange performance of the boiler is effectively improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a schematic diagram of a mounting structure of a radiating pipe and a heat absorbing pipe according to the present utility model;

FIG. 3 is a schematic view showing the mounting structure of the cold air connecting pipe and the filter plate of the present utility model;

fig. 4 is a schematic view of the installation structure of the filter box and the filter element of the present utility model.

In the figure: 1. a filter box; 2. a flue connecting pipe; 3. a filter element; 4. a hot air connection pipe; 5. an air duct; 6. a bottom cover; 7. a preheating box; 8. a top cover; 9. a case cover; 10. a heat radiating pipe; 11. a heat absorbing tube; 12. a cold air connection pipe; 13. a connecting ring; 14. a filter plate; 15. a screw; 16. a wind box; 17. a fan frame; 18. an exhaust fan; 19. a return connection pipe; 20. an exhaust pipe; 21. a handle; 22. a door; 23. a base; 24. a support column; 25. and a support plate.

Detailed Description

Referring to fig. 1, 2 and 4, an air preheater for a natural gas heating boiler:

the device comprises a filter box 1, wherein a flue connecting pipe 2 is arranged on the outer wall of one side of the filter box 1, a filter element 3 is arranged on the inner wall of the filter box 1, a hot air connecting pipe 4 is arranged on the outer wall of the other side of the filter box 1, an air duct 5 is arranged on the outer wall of the hot air connecting pipe 4, a bottom cover 6 is embedded at the top end of the air duct 5, a preheating box 7 is arranged at the top of the bottom cover 6, a diversion space is formed between the bottom cover 6 and the preheating box 7, a top cover 8 is arranged at the top of the preheating box 7, a box cover 9 is arranged at the top of the top cover 8, a converging space is formed between the preheating box 7, the top cover 8 and the box cover 9, a plurality of groups of radiating pipes 10 which are equidistantly arranged are communicated with each other, and a heat absorption pipe 11 is arranged on the outer wall of the radiating pipes 10;

the flue connecting pipe 2 is used for connecting the flue at the tail of the boiler, the hot flue gas of flue enters the inside of the filter box 1 from the inside of the flue connecting pipe 2, flue gas with more smoke and dust passes through the filter core 3, smoke and dust in the flue gas remain on the filter core 3, become clean hot air, the filter box 1 is connected with the bottom cover 6 through the hot air connecting pipe 4 and the air duct 5, thereby make the inside of the filter box 1 communicate with the inside in the reposition of redundant personnel space, clean hot air enters the reposition of redundant personnel space from the air duct 5, then the inside in the reposition of redundant personnel space shunts to the inside of cooling tube 10, because the smoke and dust in the hot air has been filtered most in the inside of filter box 1, the inside of cooling tube 10 can not pile up a lot of smoke and dust in a long time, the user need not wash the smoke and dust on the cooling tube 10 often, time and manpower are saved, the hot air gives the heat energy conduction in the inside of cooling tube 10, again, get into the convergence space, and then outwards from the convergence space, the heat absorption capacity of cooling tube 10 is increased at the outer wall of cooling tube 11, the heat absorption efficiency of cooling tube 10 is improved.

Referring to fig. 1, 2 and 3, an air preheater for a natural gas heating boiler:

the cold air connecting pipe 12 is installed to one side outer wall of preheating cabinet 7, go-between 13 is installed to the inner wall of cold air connecting pipe 12, filter 14 is installed to one side of go-between 13, four sets of screws 15 that are the rectangle and arrange are installed to the front of filter 14, bellows 16 is installed to the other side of preheating cabinet 7, fan frame 17 is installed to the inner wall of bellows 16, exhaust fan 18 is installed at the top of fan frame 17, backflow connecting pipe 19 is installed to the outer wall of bellows 16, exhaust pipe 20 is installed at the top of case lid 9, two sets of handles 21 that arrange side by side are installed at the top of case lid 9, chamber door 22 is installed through the hinge to the front of filter cabinet 1, four sets of bases 23 that are the rectangle and arrange are installed to the bottom of filter cabinet 1, four sets of support columns 24 that are the rectangle and arrange are installed to the bottom of support column 24, and the top of support plate 25 is connected with the bottom of base 23.

The filter plate 14 is arranged in the cold air connecting pipe 12 through the screw 15 and the connecting ring 13, cold air in front of the boiler passes through the flow filter plate 14 to filter dust in the external air, the cold air enters the interior of the preheating tank 7 from the cold air connecting pipe 12, the cold air is contacted with the radiating pipe 10 and the heat absorbing pipe 11 to absorb heat and become hot air, the exhaust fan 18 is arranged on one side of the preheating tank 7 through the bellows 16 and the fan frame 17, the exhaust fan 18 discharges the hot air in the preheating tank 7 to the backflow connecting pipe 19 to preheat a heating surface, the heat exchange performance of the boiler is improved, the exhaust fan 18 prevents the hot air in the preheating tank 7 from flowing out of the cold air connecting pipe 12 to be wasted, the box door 22 is used for overhauling and cleaning the radiating pipe 10, flue gas is discharged from the exhaust pipe 20, the filter core 3 in the interior of the filter tank 1 can be replaced by opening the box door 22, the supporting plate 25 is used for supporting the base 23 and the supporting column 24, the base 23 is used for supporting the preheating tank 7, and the base 23 is used for supporting the filter tank 1.

Working principle: the hot flue gas of natural gas heating boiler flue enters the filter tank 1 from the inside of flue connecting pipe 2, smoke and dust in the flue gas stay on filter core 3, become clean hot air, enter into the reposition of redundant personnel space from wind channel 5, reposition of redundant personnel to the inside of cooling tube 10 from the inside in reposition of redundant personnel space again, clean hot air can not pile up more smoke and dust in the inside of cooling tube 10, the user need not frequent washing cooling tube 10, heat absorption tube 11 and cooling tube 10 absorb the heat energy of hot air, cool air that gets into the inside of preheating tank 7 from cold air connecting pipe 12 is conducted to the heat energy, cool air heats, be discharged from backflow connecting pipe 19 by exhaust fan 18 and preheat the heated face, improve the heat exchange performance of boiler.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an air heater for natural gas heat supply boiler, includes rose box (1), its characterized in that: a flue connecting pipe (2) is arranged on the outer wall of one side of the filter box (1), a filter element (3) is arranged on the inner wall of the filter box (1), and a hot air connecting pipe (4) is arranged on the outer wall of the other side of the filter box (1); the utility model discloses a hot air connecting pipe, including hot air connecting pipe (4), air duct (5) are installed to the outer wall of hot air connecting pipe (4), bottom cover (6) are installed in the top gomphosis of air duct (5), preheating cabinet (7) are installed at the top of bottom cover (6), form the reposition of redundant personnel space between bottom cover (6) and preheating cabinet (7), top cover (8) are installed at the top of preheating cabinet (7), case lid (9) are installed at the top of top cover (8), form between preheating cabinet (7), top cover (8) and case lid (9) and assemble the space.

2. An air preheater for a natural gas heating boiler as set forth in claim 1, wherein: the inner wall of the preheating box (7) is provided with a plurality of groups of radiating pipes (10) which are arranged at equal intervals, the inner space of the radiating pipes (10) is communicated with the diversion space and the convergence space, and the outer wall of the radiating pipe (10) is provided with a heat absorption tube (11).

3. An air preheater for a natural gas heating boiler as set forth in claim 1, wherein: the cold air connecting pipe (12) is installed to the outer wall of one side of preheating cabinet (7), go-between (13) are installed to the inner wall of cold air connecting pipe (12), filter (14) are installed to one side of go-between (13), four sets of screws (15) that are the rectangle and arrange are installed in the front of filter (14).

4. An air preheater for a natural gas heating boiler as set forth in claim 1, wherein: the air box (16) is installed on the other side of the preheating box (7), the fan frame (17) is installed to the inner wall of air box (16), exhaust fan (18) is installed at the top of fan frame (17), backflow connecting pipe (19) are installed to the outer wall of air box (16).

5. An air preheater for a natural gas heating boiler as set forth in claim 1, wherein: the top of the box cover (9) is provided with an exhaust pipe (20), and the top of the box cover (9) is provided with two groups of handles (21) which are arranged side by side.

6. An air preheater for a natural gas heating boiler as set forth in claim 1, wherein: the front of the filter box (1) is provided with a box door (22) through a hinge, and the bottom of the filter box (1) is provided with four groups of bases (23) which are arranged in a rectangular mode.

7. An air preheater for a natural gas heating boiler as set forth in claim 1, wherein: four groups of support columns (24) which are arranged in a rectangular mode are arranged at the bottom of the preheating box (7), a support plate (25) is arranged at the bottom of the support column (24), and the top of the support plate (25) is connected with the bottom of the base (23).