CN220817739U

CN220817739U - Cylindrical water-cooled burner

Info

Publication number: CN220817739U
Application number: CN202322562801.4U
Authority: CN
Inventors: 陈新军; 王武学; 刘小玲; 谢谦
Original assignee: Foster Boiler Co ltd
Current assignee: Foster Boiler Co ltd
Priority date: 2023-09-21
Filing date: 2023-09-21
Publication date: 2024-04-19
Anticipated expiration: 2033-09-21

Abstract

The utility model discloses a cylindrical water-cooled burner, comprising: an air inlet assembly disposed on one side of the combustion assembly, the combustion assembly comprising: the front collecting box is divided into a plurality of water inlet cavities and a plurality of water outlet cavities by partition plates at equal angles, the water inlet cavities and the water outlet cavities are adjacent to each other, a plurality of fire tubes are arranged on the peripheral side surface of the air distribution cylinder in a circumferential array mode, and the fire tubes are communicated with the front collecting box and the rear collecting box; the air inlet assembly includes: the fan is arranged on one side of the front header, the venturi tube is arranged on one side of the fan, and the air inlet is arranged on one side of the venturi tube. The front header is divided into a plurality of water inlet cavities and a plurality of water outlet cavities through partition plates at equal angles, the water inlet cavities and the water outlet cavities are arranged in a mutually adjacent mode, so that the flame temperature at the outer side of the fire tube is more uniform, the generation of local high temperature and thermal NOx can be effectively avoided, the oxygen content in flue gas is lower, and the thermal efficiency of the boiler is improved.

Description

Cylindrical water-cooled burner

Technical Field

The utility model relates to the technical field of boiler equipment, in particular to a cylindrical water-cooled burner.

Background

The burner is an important component of an industrial boiler, is a main device for converting fuel energy into heat energy, and is classified into a premixed burner, a diffusion burner and the like according to whether premixing is standard. The patent number is: "CN114151794A", patent name: the invention relates to a diffusion type ultralow nitrogen gas burner, which comprises a fan and an electric cabinet, wherein a smoke mixing device is arranged at the air inlet end of the fan; the air outlet of the fan is connected with the combustion head; the flue gas mixing device comprises a mixing bellows; one side of the mixing bellows is rotationally connected with a first fan connecting flange plate through an air door rotating shaft, the first fan connecting flange plate is connected with a fan through a bolt, and the first fan connecting flange plate is fixedly connected with the mixing bellows through a quick buckle; the mixing bellows is fixedly communicated with a flue gas return pipe towards the other side; the end part of the flue gas return pipe is provided with a flue gas inlet flange; the flue gas return pipe is provided with a flow control valve.

However, the burner has certain use drawbacks for certain use cases: on the one hand, the burner does not have a flame temperature control structure, and the flame may generate local high temperature phenomenon, so that more thermal NOx is generated. On the other hand, the traditional diffusion burner has longer flame, needs a large furnace, and has larger integral equipment and larger occupied area. Therefore, a cylindrical water-cooled burner is proposed which specifically addresses the above-mentioned drawbacks.

Disclosure of Invention

The utility model overcomes the defects of the prior art and provides a cylindrical water-cooled burner.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a cylindrical water cooled burner comprising: combustion module and set up the subassembly of admitting air in combustion module one side, combustion module includes: the front collecting box and the rear collecting box are respectively arranged at two ends of the air distribution cylinder, the outer side of the air distribution cylinder is provided with a combustion chamber, the front collecting box is divided into a plurality of water inlet cavities and a plurality of water outlet cavities through partition boards at equal angles, the water inlet cavities and the water outlet cavities are mutually adjacent, the side face of the periphery of the air distribution cylinder is provided with a plurality of fire calandria in a circumferential array mode, and the fire calandria are communicated with the front collecting box and the rear collecting box; the air intake assembly includes: the fan is arranged on one side of the front header, the venturi tube is arranged on one side of the fan, the air inlet is arranged on one side of the venturi tube, and the gas pipe is arranged below the venturi tube.

In a preferred embodiment of the utility model, the rear header is divided by a plurality of partition boards to form a plurality of water exchanging cavities, and each water exchanging cavity corresponds to one water inlet cavity and one water outlet cavity at the same time.

In a preferred embodiment of the utility model, a water inlet and a water outlet are arranged on one side of the front header, the water inlet is communicated with a plurality of water inlet cavities, and the water outlet is communicated with a plurality of water outlet cavities.

In a preferred embodiment of the utility model, an ignition assembly is arranged at one side of the fan, and the ignition assembly is used for igniting the fuel gas after being mixed with air in the combustion cavity.

In a preferred embodiment of the utility model, the peripheral side surface of the air distribution cylinder is provided with a plurality of rows of fire-spraying ports in a circumferential array mode, and each row of fire-spraying ports is aligned with one fire row pipe in a forward direction.

In a preferred embodiment of the utility model, a control valve group is arranged at the upper end of the gas pipe, and the control valve group is used for controlling the gas flow.

In a preferred embodiment of the utility model, the bottom end of the gas pipe is provided with a gas inlet, and a filter is arranged at the gas inlet.

The utility model solves the defects existing in the background technology, and has the following beneficial effects:

(1) According to the utility model, the plurality of rows of fire-spraying ports are arranged on the peripheral side surface of the air distribution cylinder in a circumferential array mode, each row of fire-spraying ports is aligned with one fire-discharging pipe in the forward direction, and when flame is sprayed out, the fire-discharging pipes can be fully contacted, so that the best cooling effect of the fire-discharging pipes on the flame is achieved, and the purpose of cooling the flame is achieved. The front header is divided into a plurality of water inlet cavities and a plurality of water outlet cavities through partition plates at equal angles, the water inlet cavities and the water outlet cavities are arranged in a mutually adjacent mode, and cooling water in each fire tube bank on the peripheral side face of the air distribution cylinder can keep the temperature as uniform as possible, so that the flame temperature on the outer side of the fire tube bank is more uniform, the generation of local high temperature and thermal NOx can be effectively avoided, the oxygen content in flue gas is lower, and the thermal efficiency of a boiler is improved compared with a traditional diffusion type burner.

(2) The burner has the advantages of exquisite and compact structure, short flame and no need of a larger furnace, thereby effectively reducing the overall size of the boiler and the occupied area. And through the control valves that sets up in the gas pipe upper end, can accurate control gas flow flux, and then the size of control flame further improves gas utilization ratio, on the other hand, through setting up the filter at the gas inlet of gas pipe, can carry out purification treatment to the gas, further improve gas utilization ratio, reduce the production of harmful flue gas.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic cross-sectional view of a preferred embodiment of the present utility model;

FIG. 2 is a side view of a preferred embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view at A-A of FIG. 1;

FIG. 4 is a schematic cross-sectional view at B-B in FIG. 1;

FIG. 5 is a middle diameter development view of the air distribution cylinder of the preferred embodiment of the utility model.

Specifically, 1, an air distribution cylinder; 2. a front header; 3. a rear header; 4. a combustion chamber; 5. a fire tube; 6. a water inlet cavity; 7. a water outlet cavity; 8. a blower; 9. a venturi tube; 10. an air inlet; 11. a gas pipe; 12. a water exchanging cavity; 13. a water inlet; 14. a water outlet; 15. an ignition assembly; 16. a flame spraying port; 17. a control valve group; 18. a gas inlet; 19. a filter; 20. a viewing mirror.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.

As shown in fig. 1, 3 and 4, a cylindrical water-cooled burner comprises: combustion module and set up the subassembly of admitting air in combustion module one side, combustion module includes: the front header 2 and the rear header 3 at two ends of the air distribution cylinder 1 are respectively arranged, the combustion chamber 4 is arranged outside the air distribution cylinder 1, the sight glass 20 is arranged on the upper portion of the front header 2, the sight glass 20 is used for observing the internal condition of the front header 2, the peripheral side face of the air distribution cylinder 1 is provided with a plurality of fire tubes 5 in a circumferential array mode, the plurality of fire tubes 5 are communicated with the front header 2 and the rear header 3, the whole structure of the burner is exquisite and compact, the flame is short, a large furnace liner is not needed, and therefore the whole size of the boiler can be effectively reduced, and the occupied area is reduced.

As shown in fig. 2, the intake assembly includes: the air conditioner comprises a fan 8 arranged on one side of a front header 2, an ignition assembly 15 arranged on one side of the fan 8, a venturi tube 9 arranged on one side of the fan 8, an air inlet 10 arranged on one side of the venturi tube 9, and a gas pipe 11 arranged below the venturi tube 9, wherein the ignition assembly 15 is used for igniting gas mixed with air in a combustion cavity 4; the upper end of the gas pipe 11 is provided with the control valve group 17, the gas flow flux can be accurately controlled through the control valve group 17 arranged at the upper end of the gas pipe 11, the size of flame is further controlled, the gas utilization rate is further improved, on the other hand, the bottom end of the gas pipe 11 is provided with the gas inlet 18, and the gas can be purified through the filter 19 arranged at the gas inlet 18 of the gas pipe 11, so that the gas utilization rate is further improved, and the generation of harmful smoke is reduced.

In a preferred embodiment of the utility model, the front header 2 is divided into a plurality of water inlet cavities 6 and a plurality of water outlet cavities 7 by partition plates at equal angles, the water inlet cavities 6 and the water outlet cavities 7 are mutually adjacent, the rear header 3 is divided into a plurality of water exchange cavities 12 by a plurality of partition plates, each water exchange cavity 12 corresponds to one water inlet cavity 6 and one water outlet cavity 7 at the same time, one side of the front header 2 is provided with a water inlet 13 and a water outlet 14, the water inlet 13 is communicated with the plurality of water inlet cavities 6, the water outlet 14 is communicated with a plurality of water outlet cavities 7, the front header 2 is divided into a plurality of water inlet cavities 6 and a plurality of water outlet cavities 7 by partition plates at equal angles, the water inlet cavities 6 and the water outlet cavities 7 are mutually adjacent, and the cooling water in each fire tube 5 at the peripheral side surface of the air distribution tube 1 can keep the same temperature as much as possible, so that the flame temperature at the outer side of the fire tube 5 is more uniform, compared with a traditional diffusion burner, the local high temperature can be effectively avoided, the generation of thermal NOx can be reduced, the oxygen content in flue gas is lower, and the thermal efficiency of the boiler is improved.

As shown in fig. 3 and fig. 5, in a preferred embodiment of the present utility model, the peripheral side surface of the air distribution cylinder 1 is provided with a plurality of rows of fire-spraying ports 16 in a circumferential array manner, each row of fire-spraying ports 16 is aligned with one fire-discharging tube 5 in a forward direction, when the flame is sprayed, the fire-discharging tube 5 can be fully contacted, the fire-discharging tube 5 achieves an optimal cooling effect on the flame, and the purpose of cooling the flame is achieved.

The working principle of the utility model is as follows: the gas reaches the venturi tube 9 through the filter 19 and the control valve group 17, the air is fully and uniformly mixed with the gas after entering the venturi tube 9 from the air inlet 10, the gas enters the air distribution cylinder 1 through the fan 8, the air is sprayed out from the air distribution cylinder 1 through gaps of the fire tubes 5 which are circumferentially arranged, and the ignition component 15 ignites the gas in the combustion chamber 4. Cooling water enters the water inlet cavity 6 through the water inlet 13, enters the water changing cavity 12 in the rear header 3 through the fire discharge pipe 5 from the water inlet cavity 6, enters the water outlet cavity 7 through the fire discharge pipe 5, and is discharged through the water outlet 14, so that the cooling circulation of the cooling water is repeatedly completed, and the flame temperature is continuously reduced.

The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A cylindrical water cooled burner comprising: combustion module and set up the subassembly of admitting air in combustion module one side, its characterized in that, combustion module includes: the combustion chamber (4) is arranged at the outer side of the air distribution cylinder (1), the front air distribution cylinder (1) is divided into a plurality of water inlet chambers (6) and a plurality of water outlet chambers (7) through partition plates at equal angles, the water inlet chambers (6) and the water outlet chambers (7) are adjacent to each other, a plurality of fire calandria (5) are arranged on the side face of the periphery of the air distribution cylinder (1) in a circumferential array mode, and the fire calandria (5) are communicated with the front air distribution cylinder (2) and the rear air distribution cylinder (3); the air intake assembly includes: the air conditioner is characterized by comprising a fan (8) arranged on one side of the front header (2), a venturi tube (9) is arranged on one side of the fan (8), an air inlet (10) is formed in one side of the venturi tube (9), and a gas pipe (11) is arranged below the venturi tube (9).

2. A cylindrical water cooled burner as claimed in claim 1, wherein: the rear header (3) is divided into a plurality of water changing cavities (12) through a plurality of partition boards, and each water changing cavity (12) corresponds to one water inlet cavity (6) and one water outlet cavity (7) at the same time.

3. A cylindrical water cooled burner as claimed in claim 1, wherein: a water inlet (13) and a water outlet (14) are formed in one side of the front header (2), the water inlet (13) is communicated with a plurality of water inlet cavities (6), and the water outlet (14) is communicated with a plurality of water outlet cavities (7).

4. A cylindrical water cooled burner as claimed in claim 1, wherein: an ignition assembly (15) is arranged on one side of the fan (8), and the ignition assembly (15) is used for igniting fuel gas mixed with air in the combustion cavity (4).

5. A cylindrical water cooled burner as claimed in claim 1, wherein: the outer peripheral side surface of the air distribution cylinder (1) is provided with a plurality of rows of fire-spraying ports (16) in a circumferential array mode, and each row of fire-spraying ports (16) is aligned with one fire-discharging pipe (5) in the forward direction.

6. A cylindrical water cooled burner as claimed in claim 1, wherein: the upper end of the gas pipe (11) is provided with a control valve group (17), and the control valve group (17) is used for controlling the gas flow.

7. A cylindrical water cooled burner as claimed in claim 1, wherein: the bottom end of the gas pipe (11) is provided with a gas inlet (18), and a filter (19) is arranged at the gas inlet (18).