CN214120391U - Horizontal atmospheric hot water boiler with gas and oil - Google Patents

Abstract

The utility model relates to a horizontal atmospheric hot water boiler with multiple purposes of gas and oil, which comprises a channel steel base, a boiler coaming, a back burning combustion chamber, a connecting smoke pipe, an auxiliary combustion chamber, a smoke box, a smoke pipe, a necessary furnace door of a boiler, an ash removing door, a smoke outlet, a fuel gas burner interface, an ash removing port and a waterway system; the long column type auxiliary combustion chamber matched with the flame during fuel oil gas is additionally arranged, so that the problem that the flame can not be completely unfolded to burn out a head of a combustion machine when the coal-fired oil gas normal-pressure hot water boiler takes oil gas as fuel is solved, and the thermal power and the high thermal efficiency in the state are ensured. Meanwhile, the auxiliary combustion chamber is combined with the hearth of the back combustion structure, so that the combustion stroke and the combustion space of volatile matters are increased under the condition of taking coal as fuel, the emission of smoke dust is reduced, and a certain smoke abatement effect is achieved.

Description

Horizontal atmospheric hot water boiler with gas and oil

Technical Field

The utility model relates to an ordinary pressure hot water boiler, concretely relates to horizontal ordinary pressure hot water boiler that coal gas oil is multi-purpose.

Background

With the continuous deepening of reform development, the nation puts higher requirements on environment protection work, the oil and gas resources are vigorously developed, and the application of oil and gas boilers is increased year by year. The conventional single-fuel atmospheric hot water boiler is applicable to a narrow area, and cannot meet the requirements of customers. The existing gas-oil multipurpose boiler on the market is shown in fig. 4, most of the existing gas-oil multipurpose boilers directly insert a fuel gas burner above a coal-fired hearth to cause the condition that different combustion modes share one hearth, and the coal-fired hearth is of a vertical cylindrical structure, and for the flame of fuel gas, the flame cannot be completely unfolded, so that the flame is tempered, the phenomenon of burning out the head of a burner occurs, and meanwhile, because the flame cannot be completely unfolded, the condition that oil gas is used as fuel is caused, and the output is far lower than the condition of the rated power of the boiler under the actual working condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel multi-purpose bedroom ordinary pressure hot water boiler of gas oil. The novel gas-fired boiler is not only suitable for being used in different areas with different fuel requirements, but also can eliminate smoke and remove dust under the condition of coal burning, and flame can be completely unfolded under the fuel oil and gas state without burning the head of the burner, thereby ensuring the thermal power and the high thermal efficiency when oil gas is used as fuel for operation.

The utility model adopts the technical scheme as follows:

a horizontal atmospheric hot water boiler with gas and oil; the device comprises a channel steel base, a boiler coaming, a back-burning combustion chamber, a connecting smoke pipe, an auxiliary combustion chamber, a smoke box, a smoke pipe, a necessary furnace door of a boiler, an ash removal door, a smoke outlet, a fuel oil gas burner interface, an ash removal port and a waterway system;

the structure is characterized in that: the boiler is of a horizontal structure, is wholly positioned above the channel steel base and is wrapped by the boiler enclosing plate, the inside of the boiler is filled with water, and the top of the boiler is compacted by the cover plate but is not sealed. The water inlet and outlet, overflow port, glass liquid level, furnace door and ash removing port are all arranged on the boiler coaming. The back-burning combustion chamber is located at the bottom of the whole structure and consists of a fixed grate, a water-cooling grate, a furnace pipe and a furnace door. The upper part is a long column type auxiliary combustion chamber, namely a fuel oil gas combustion chamber. The two combustion chambers are connected through 4 connecting smoke pipes. One side of the auxiliary combustion chamber is communicated with a burner interface and extends out of a boiler coaming, and the auxiliary combustion chamber can be used for placing an oil-gas burner. The other side is introduced into the rear smoke box. The rear smoke box is internally provided with a partition board, refractory cement is poured on the partition board and divides the rear smoke box into three spaces, so that the rear smoke box, the smoke pipe and the 2 turning smoke boxes jointly form a 4-return-stroke convection heat exchange area, and smoke passes through the area to perform convection heat exchange and then is discharged through a smoke outlet at the bottom of the smoke box. The turning smoke box is provided with ash cleaning openings, the rear smoke box is provided with an openable large ash cleaning door for ash cleaning and inspection, and the large ash cleaning door is provided with a handle for opening the door conveniently.

Furthermore, according to the technical scheme, a plurality of flat iron reinforcing ribs are welded on the boiler coaming with the square structure so as to ensure the strength and no deformation. The whole boiler is of a volume type large-opening structure, and the problem of high-temperature furnace response is solved. The outer wall of the enclosing plate is provided with an overflow port and a liquid level meter, so that the normal operation water level of the enclosing plate is ensured.

Furthermore, according to the technical scheme, the boiler comprises two furnace doors, wherein the upper part of the boiler is a reverse-burning coal-adding furnace door, and the bottom of the boiler is a direct-burning furnace door. The lower square furnace door is a deslagging port.

The utility model has the advantages that:

the long column type auxiliary combustion chamber matched with the flame during fuel oil gas is additionally arranged, so that the problem that the flame can not be completely unfolded to burn out a head of a combustion machine when the coal-fired oil gas normal-pressure hot water boiler takes oil gas as fuel is solved, and the thermal power and the high thermal efficiency in the state are ensured. Meanwhile, the auxiliary combustion chamber is combined with the hearth of the back combustion structure, so that the combustion stroke and the combustion space of volatile matters are increased under the condition of taking coal as fuel, the emission of smoke dust is reduced, and a certain smoke abatement effect is achieved.

Drawings

Fig. 1 is a schematic view of the internal structure of the boiler surrounding plate in the utility model. In the figure: 1. a deslagging port; 2. fixing a grate; 3. connecting a smoke pipe; 4. water-cooling the grate; 5. a feed inlet; 6. a burner interface; 7. a secondary combustion chamber; 8. turning the smoke box; 9. a smoke pipe; 10. a top cover plate; 11. a rear smoke box; 12. a smoke box clapboard; 13. a large ash removal door; 14. refractory cement; 15. a handle; 16. a smoke outlet; 17. cleaning ash holes; 18. a furnace pipe; 19. a channel steel base.

Fig. 2 is a top view of the present invention with the top cover removed. In the figure: 20. reinforcing ribs; 21. boiler coaming.

FIG. 3 is a front view of the boiler. In the figure: 22. a slag removal door; 23. a furnace door; 24. descaling and plugging; 25. lifting lugs; 26. a water outlet; 27. an overflow port; 28. a glass tube level gauge; 29. fastening a bolt; 30. a water inlet; 31. and a dust removing door.

FIG. 4 is a schematic diagram of the internal structure of a prior art boiler with the enclosure removed. In the figure: 1. a deslagging port; 2. fixing a grate; 3. connecting a smoke pipe; 4. water-cooling the grate; 5. a feed inlet; 6. a burner interface; 7. a secondary combustion chamber; 8. turning the smoke box; 9. a smoke pipe; 10. a top cover plate; 11. a rear smoke box; 12. a smoke box clapboard; 13. a large ash removal door; 14. refractory cement; 15. a handle; 16. a smoke outlet; 17. cleaning ash holes; 18. a furnace pipe; 19. a channel steel base.

Detailed Description

The technical solution of the present invention is described below with specific examples:

referring to fig. 1 and 3, the horizontal atmospheric hot water boiler using gas and oil is characterized in that the whole boiler is surrounded by a channel steel base (19) and a boiler coaming (21), a top cover plate (10) is arranged at the top of the boiler and used for pressing and covering ash but not sealing the boiler, a boiler body is arranged inside the boiler, and the whole boiler is of a volume type large-opening horizontal structure.

As shown in figure 1, the bottom of the furnace body is a back-burning combustion chamber consisting of a fixed grate (2), a furnace pipe (18) and a water-cooled grate (4), the furnace pipe (18) is provided with an upper feeding hole (5), a lower feeding hole (5), a bottom deslagging port (1) and a furnace enclosing plate (21), and is provided with a corresponding furnace door (23) and a deslagging door (22) for feeding coal and deslagging of the boiler. An auxiliary combustion chamber (7) is arranged on the back-burning combustion chamber, and the bottom of the back-burning combustion chamber is communicated with the back-burning combustion chamber between the auxiliary combustion chamber (7) and the combustion chamber through 4 connecting smoke pipes (3) which are uniformly distributed at four corners. One side of the auxiliary combustion chamber (7) is provided with a burner interface (6) which is provided with a flange and a blind plate, and the other side is connected to a rear smoke box (11) of the boiler body. A smoke box partition plate (12) covered with refractory cement (14) is arranged in the rear smoke box (11), the space of the rear smoke box (11) is divided into three independent smoke chambers, and the space divided by the rear smoke box (11) is communicated with the two turning smoke boxes (8) through smoke pipes (9) to form four return convection heat transfer areas. An ash cleaning port is arranged on the turning smoke box (8) to facilitate ash cleaning. Finally, the smoke passes through a smoke outlet (16) at the bottom of the rear smoke box (11) and enters the smoke tube. The outer part of the rear smoke box (11) is provided with a large ash removal door (13) which is tightly screwed through a fastening bolt (29) for sealing, and the large ash removal door (13) is provided with a handle (15) for opening conveniently.

As shown in figure 2, a plurality of reinforcing ribs (20) are arranged in the square boiler shroud (9) to enhance the strength and prevent deformation.

As shown in figure 3, the water inlet (28) is positioned at the low side of the boiler, the water outlet (26), the overflow port (27) and the glass tube liquid level meter (28) are positioned at the upper part of the boiler, and the water circulation system of the boiler is formed by the water inlet, the overflow port and the glass tube liquid level meter. The boiler coaming (9) is provided with a plurality of descaling plugs (24) corresponding to the positions of the tube bundles of the water-cooling grate (4), so that scale in the water-cooling grate (4) can be cleaned conveniently. The boiler coaming (9) is provided with a lifting lug (25), a furnace door (23) and an ash removal door (31) so as to ensure the normal assembly and use of the boiler.

In the middle of the in-service use, during coal-fired use, combustor interface (6) need be stifled with the blind plate and die, and fuel is after the back-burning combustion chamber burning, and the flue gas gets into auxiliary combustion chamber (7) through connecting tobacco pipe (3), and to small-size hot water boiler, the furnace size is general littleer, and the volatile is difficult to the complete combustion, and the combustion space that auxiliary combustion chamber (7) increase, the burning that makes is more abundant, reduces the complete combustion loss not, combines to sell except black cigarette with the back-burning mode of burning. After passing through the auxiliary combustion chamber (7), the flue gas exchanges heat in a convection heat exchange area passing through four return strokes, and finally the low-temperature flue gas passes through a flue gas outlet (16) at the bottom of the smoke box (11) and is introduced into a chimney by an induced draft fan. When the fuel is changed into oil (gas), a burner for burning the oil (gas) is arranged on a burner interface (6), and all furnace doors are closed. The flame of the burner is directly burned in the auxiliary combustion chamber (7), the long-cylinder-shaped auxiliary combustion chamber (7) ensures that the burning flame can be completely unfolded, the phenomenon that the burning machine head is burnt out due to the fact that the flame touches the wall and backfire because of space limitation is avoided, incomplete burning loss is reduced, and the heat efficiency and the heat power under the working condition of fuel oil (gas) are ensured. The spread flame is completely combusted in the auxiliary combustion chamber (7) for radiation heat exchange, then is subjected to heat exchange in a four-return convection heat exchange area, and finally the flue gas passes through a flue gas outlet (16) at the bottom of the rear smoke box (11) and is introduced into a chimney by an induced draft fan to be exhausted to the atmosphere.

Claims (3)

1. A horizontal atmospheric hot water boiler with multiple purposes of gas and oil is characterized by comprising a channel steel base, a boiler coaming, a back-burning combustion chamber, a connecting smoke pipe, an auxiliary combustion chamber, a smoke box, a smoke pipe, a necessary boiler door of the boiler, an ash removal door, a smoke outlet, a fuel oil gas burner interface, an ash removal port and a water path system;

the boiler is of a horizontal structure, is wholly positioned above the channel steel base and is wrapped by a boiler enclosing plate, the interior of the boiler is filled with water, and the top of the boiler is compacted by a cover plate but is not sealed; the water inlet and outlet, overflow port, glass liquid level, furnace door and ash removing port are all arranged on the boiler coaming; the back-burning combustion chamber is positioned at the bottom of the whole structure and consists of a fixed grate, a water-cooling grate, a furnace pipe and a furnace door; the upper part is a long column type auxiliary combustion chamber, namely a fuel gas combustion chamber; the two combustion chambers are connected through 4 connecting smoke pipes; one side of the auxiliary combustion chamber is communicated with a burner interface and extends out of the boiler coaming, and the fuel oil and gas burner can be placed by the auxiliary combustion chamber; the other side is introduced into a rear smoke box; a partition board is arranged in the rear smoke box, refractory cement is poured on the partition board and divides the rear smoke box into three spaces, so that the rear smoke box, the smoke pipe and the 2 turning smoke boxes jointly form a 4-return-stroke convection heat exchange area, and smoke passes through the area for convection heat exchange and then is discharged through a smoke outlet at the bottom of the smoke box; the turning smoke box is provided with ash cleaning openings, the rear smoke box is provided with an openable large ash cleaning door for ash cleaning and inspection, and the large ash cleaning door is provided with a handle for opening the door conveniently.

2. The horizontal atmospheric hot water boiler of claim 1, wherein a plurality of flat iron reinforcing ribs are welded to the boiler surrounding plate of the square structure.

3. The horizontal atmospheric hot water boiler of claim 1, wherein the boiler comprises two doors, the upper part is a reverse-burning coal-feeding door, and the bottom part is a direct-burning door; the lower square furnace door is a deslagging port.

Images