Ultra-low-nitrogen water-cooling air pre-heating steam boiler

Abstract

The utility model provides an ultra-low nitrogen water-cooling air pre-steam boiler which comprises a civil engineering foundation, a base is arranged at the upper end of the civil engineering foundation, a body is arranged on the base, a condensation energy-saving all-in-one machine is arranged at the top of the body and connected with the interior of the body, and a smoke outlet is formed in the side edge of the condensation energy-saving all-in-one machine. An ultra-low nitrogen gas burner is arranged on the side edge of the body, a high-pressure centrifugal fan is arranged above the ultra-low nitrogen gas burner, and a water-cooling air pre-heater is arranged at the upper end of the high-pressure centrifugal fan. A front smoke box is further arranged on the side edge of the body and connected with the interior of the body. A superheater is further arranged on the front face of the body, the superheater is communicated with the interior of the body and the condensation energy-saving all-in-one machine through a plurality of pipelines, the boiler adopts an ultra-low-nitrogen combustor to provide fuel for combustion, flue gas obtained after heat limit recovery is exhausted into the atmosphere through a chimney, the utilization efficiency of combustion is improved, and pollution caused by flue gas emission is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to an ultra-low nitrogen water-cooled air-pre-steam boiler. Background Art

[0002] A gas boiler is a boiler that uses gas as fuel. It is a mechanical device that heats the liquid inside the boiler, such as water, into hot water or steam through the combustion of gas. It is convenient to use and economical.

[0003] The existing Chinese patent document CN201921935793.0 is a steam boiler system. The utility model discloses a steam boiler system, including a steam boiler body, a fuel pipe, a fuel valve, a fan, a water level valve, a support rod, a base, a steam exhaust pipe, a steam valve, a drainage pipe, a smoke exhaust pipe, an economizer valve, a connecting pipe, a water outlet pipe, a water pump, a water tank, a first water guide pipe, a second water guide pipe, a water softener, a side hole, a flame nozzle, a partition and a fire filter. A water level valve is arranged on one side of the top of the steam boiler body, a fan is arranged on one side of the bottom of the steam boiler body, a side hole is opened on one side of the bottom of the steam boiler body, the side hole is sleeved on the outside of one end of the fan, a flame nozzle is arranged on one end of the fan, a partition is arranged inside the steam boiler body, and the partition is located on the outside of the flame nozzle. The steam boiler system has a simple structure and is easy to operate. Soft water is used for processing. No scale will be formed after water evaporates, which is beneficial to protecting the steam boiler and increasing the service life of the steam boiler.

[0004] However, the above patent has certain defects when used. Due to incomplete combustion, there are problems such as excessive nitrogen oxide emissions, easy to cause air pollution, poor gas-liquid separation effect, and low heat utilization efficiency. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides an ultra-low nitrogen water-cooled air-pre-steam boiler.

[0006] The utility model is implemented by the following technical solutions:

[0007] An ultra-low nitrogen water-cooled air-preheated steam boiler comprises a civil foundation, a base is provided at the upper end of the civil foundation, a body is provided on the base, a condensing energy-saving integrated machine is provided on the top of the body, the condensing energy-saving integrated machine is connected to the inside of the body, and a smoke exhaust port is provided on the side of the condensing energy-saving integrated machine;

[0008] An ultra-low nitrogen gas burner is provided on the side of the body, a high-pressure centrifugal fan is provided above the ultra-low nitrogen gas burner, and a water-cooled air preheater is provided at the upper end of the high-pressure centrifugal fan;

[0009] A front smoke box is also provided on the side of the body, and the front smoke box is connected to the inside of the body;

[0010] A superheater is also provided on the front side of the main body, and the superheater is respectively connected with the inside of the main body and the condensing energy-saving integrated machine through a plurality of pipes.

[0011] A heat-insulating component is arranged inside the body, the heat-insulating component is distributed in the outermost layer of the body, and the heat-insulating component adopts external packaging for heat preservation.

[0012] The main body is also provided with a platform ladder, which extends all the way to the top of the main body.

[0013] A steam exhaust pipeline is provided on the top of the body, a pipeline instrument valve is provided on the steam exhaust pipeline, and the steam exhaust pipeline is communicated with the interior of the body.

[0014] A plurality of sewage pipes are arranged at the bottom of the body, and sewage valves are arranged on the sewage pipes.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The boiler uses an ultra-low nitrogen burner to provide fuel combustion. The flames are turbulently burned in the furnace. The high-temperature flue gas generated is returned through the reburner and enters the threaded flue pipe. After efficient heat exchange, it enters the air preheater from the front smoke box. The flue gas is countercurrently exchanged to heat the cold air.

[0017] The cooled flue gas flows downstream into the energy-saving condensing integrated machine, and the flue gas flows countercurrently through the staggered silicon-magnesium-aluminum alloy finned tubes to expand the heating surface, recover the flue gas latent heat and sensible heat, and preheat the boiler feed water temperature. The flue gas after heat limit recovery is discharged into the atmosphere through the chimney, which improves the combustion efficiency and reduces the pollution of flue gas emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a side structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the back structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the utility model from top view;

[0022] In the figure: 1. Main body; 2. External insulation; 3. Ultra-low nitrogen gas burner; 4. Superheater; 5. High-pressure centrifugal fan; 6. Water-cooled air preheater; 7. Condensing energy-saving integrated machine; 8. Pipeline instrument valves; 9. Platform escalator; 10. Front smoke box; 11. Civil foundation; 12. Base; 13. Fully automatic electrical control cabinet. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 4 As shown, an ultra-low nitrogen water-cooled air-preheated steam boiler comprises a civil foundation 11, a base 12 is provided at the upper end of the civil foundation 11, a body 1 is provided on the base 12, a condensing energy-saving integrated machine 7 is provided on the top of the body 1, the condensing energy-saving integrated machine 7 is connected to the inside of the body 1, and a smoke exhaust port is provided on the side of the condensing energy-saving integrated machine 7;

[0026] An ultra-low nitrogen gas burner 3 is provided on the side of the body 1, a high-pressure centrifugal fan 5 is provided above the ultra-low nitrogen gas burner 3, and a water-cooled air preheater 6 is provided at the upper end of the high-pressure centrifugal fan 5;

[0027] A front smoke box 10 is also provided on the side of the body 1, and the front smoke box 10 is connected to the inside of the body 1;

[0028] A superheater 4 is also provided on the front side of the main body 1 , and the superheater 4 is respectively connected with the inside of the main body 1 and the condensing energy-saving integrated machine 7 through a plurality of pipes.

[0029] The body 1 is provided with a heat-insulating component inside, and the heat-insulating component is distributed in the outermost layer of the body 1. The heat-insulating component adopts an outer insulation 2, and the outer insulation 2 reduces the heat loss of the boiler and improves the thermal efficiency of the boiler.

[0030] The main body 1 is also provided with a platform escalator 9, which extends all the way to the top of the main body 1. The platform escalator 9 is convenient for operators to inspect and maintain, thereby ensuring the safety of the operators.

[0031] A steam exhaust pipeline is provided on the top of the main body 1 , a pipeline instrument valve 8 is provided on the steam exhaust pipeline, and the steam exhaust pipeline is connected with the inside of the main body 1 .

[0032] A plurality of sewage pipes are provided at the bottom of the main body 1 , and sewage valves are provided on the sewage pipes. The sewage pipes can discharge sewage inside the main body 1 .

[0033] A full-automatic electrical control cabinet 13 is arranged on the side of the body 1 and is installed on the ground. The full-automatic electrical control cabinet 13 has a high degree of automation and is easy to operate.

[0034] The use principle of the utility model is as follows: when in use, the boiler adopts a large-volume full-corrugated furnace, a wet-back runway-type rewinding chamber, and fully threaded smoke pipes are symmetrically and evenly arranged on both sides of the furnace. The ultra-low nitrogen burner provides fuel combustion, and the ejected flame burns turbulently in the furnace. The high-temperature flue gas generated is returned through the rewinding chamber and enters the threaded smoke pipe. After efficient heat exchange, it enters the air preheater through the front smoke box 10, and the flue gas countercurrently exchanges heat to heat the cold air.

[0035] The cooled flue gas flows downstream into the energy-saving condensing integrated machine, and the flue gas flows countercurrently through the staggered silicon-magnesium-aluminum alloy finned tubes to expand the heating surface, recover the flue gas latent heat and sensible heat, and preheat the boiler feed water temperature. The flue gas after heat limit recovery is discharged into the atmosphere through the chimney.

[0036] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An ultra-low nitrogen water-cooled air pre-steam boiler, comprising a civil foundation (11), a base (12) is provided at the upper end of the civil foundation (11), a body (1) is provided on the base (12), and the characteristics are: A condensing energy-saving integrated machine (7) is provided on the top of the body (1), the condensing energy-saving integrated machine (7) is connected to the inside of the body (1), and a smoke exhaust port is provided on the side of the condensing energy-saving integrated machine (7); An ultra-low nitrogen gas burner (3) is provided on the side of the body (1), a high-pressure centrifugal fan (5) is provided above the ultra-low nitrogen gas burner (3), and a water-cooled air preheater (6) is provided at the upper end of the high-pressure centrifugal fan (5); A front smoke box (10) is also provided on the side of the body (1), and the front smoke box (10) is connected to the inside of the body (1); A superheater (4) is also provided on the front of the main body (1), and the superheater (4) is respectively connected to the inside of the main body (1) and the condensing energy-saving integrated machine (7) through a plurality of pipes.

2. The ultra-low nitrogen water-cooled air pre-steam boiler according to claim 1, characterized in that: A heat-insulating component is arranged inside the body (1), the heat-insulating component is distributed in the outermost layer of the body (1), and the heat-insulating component adopts external insulation (2).

3. The ultra-low nitrogen water-cooled air pre-steam boiler according to claim 2 is characterized in that: The main body (1) is also provided with a platform ladder (9), and the platform ladder (9) extends all the way to the top of the main body (1).

4. The ultra-low nitrogen water-cooled air pre-steam boiler according to claim 3 is characterized in that: A steam exhaust pipeline is provided on the top of the body (1), a pipeline instrument valve (8) is provided on the steam exhaust pipeline, and the steam exhaust pipeline is connected to the inside of the body (1).

5. The ultra-low nitrogen water-cooled air pre-steam boiler according to claim 4, characterized in that: A plurality of sewage pipes are provided at the bottom of the body (1), and sewage valves are provided on the sewage pipes.

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