Boiler steam drum with preheating device

Abstract

The invention discloses a boiler drum with a preheating device, and relates to the technical field of boiler equipment.The boiler drum mainly comprises an air supply device body, an air supply pipe, an incinerator, an air outlet pipe and the like, a main air supply pipe is arranged at the bottom of the air supply pipe, an air supply side pipe is arranged at the tail end of the right side of the air supply pipe, and the right side of the main air supply pipe is connected with a connecting pipe and a mixing pipe; by means of a multi-channel air supply structure, the fuel combustion efficiency is improved, fuel combustion is more sufficient, a smoke inlet pipe, a heat conduction pipe, a smoke removal box and the like are arranged above an air outlet pipe, heat conduction fins are arranged on the outer side of the heat conduction pipe, and inner fins are arranged in the heat conduction pipe. And the fuel conveying branch pipe and the connecting pipe can be independently detached and overhauled, equipment maintenance is facilitated, the use process is clear, and high practicability and innovativeness are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field related to boiler equipment, and in particular relates to a boiler drum provided with a preheating device. Background Art

[0002] The main working principle of the boiler is to use the heat energy released after the combustion of the fuel or the waste heat in industrial production to transfer to the water in the container, so that the water reaches the required temperature or a certain pressure of steam. After the water enters the boiler, the boiler heating surface in the steam-water system transfers the absorbed heat to the water, so that the water is heated into hot water of a certain temperature and pressure or generates steam, which is then led out for use. In the combustion equipment part, the fuel combustion continuously releases heat, and the high-temperature flue gas generated by the combustion transfers heat to the boiler heating surface through heat transfer, while its own temperature gradually decreases and is finally discharged from the chimney.

[0003] However, the existing boiler air supply device usually uses a single air supply pipe to supply air, which may cause incomplete combustion when the fuel is burned, affecting the thermal efficiency of the boiler. Summary of the invention

[0004] The object of the present invention is to provide a boiler drum provided with a preheating device to solve the problem that the existing boiler air supply device mentioned in the above background technology usually adopts a single air supply pipe for air supply, which may cause incomplete combustion when the fuel burns, thereby affecting the thermal efficiency of the boiler.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a boiler drum provided with a preheating device, comprising an air supply device body; An air supply pipe is arranged at the right side of the air supply device body, an incinerator is arranged at the right side of the air supply pipe, and an air outlet pipe is arranged at the right side of the incinerator; An air supply main pipe is arranged at the bottom of the air supply pipe, and an air supply side pipe is arranged at the right end of the air supply pipe.

[0006] Preferably, a connecting pipe is provided at the right side of the air supply main pipe, a mixing pipe is provided at the right side of the connecting pipe, and a fuel delivery main pipe is provided above the connecting pipe.

[0007] Preferably, a fuel delivery branch pipe is provided at the bottom of the fuel delivery main pipe, four connecting pipes are provided in the annular array, a connecting flange is provided at the middle outer position of the connecting pipe, and the fuel delivery branch pipes are respectively connected to the connecting pipe flanges.

[0008] Preferably, the air supply side pipe is fixedly connected to the bottom of the mixing tube, a connecting flange is provided at the left side of the air supply side pipe, and the air supply side pipe is connected to the end flange of the air supply pipe.

[0009] Preferably, the air supply main pipe blows the fuel in the connecting pipe into the mixing pipe, and the air supply side pipe blows the side cyclone from the bottom. The fuel delivery branch pipe and the connecting pipe are respectively provided with control valves, and the fuel delivery branch pipe and the connecting pipe can be disassembled and repaired separately.

[0010] Preferably, smoke inlet pipes are arranged in an array above the air outlet pipes, heat conduction pipes are arranged above the smoke inlet pipes, smoke removal boxes are arranged outside the heat conduction pipes arranged in an array, and dust collection boxes are arranged at the bottom of the heat conduction pipes.

[0011] Preferably, a water inlet is provided at the lower right side of the smoke removal box, a water outlet is provided at the upper left side of the smoke removal box, a filter box is provided at the top of the smoke removal box, and an air outlet is provided at the top of the filter box.

[0012] Preferably, the outer array of the heat conducting pipe is provided with heat conducting fins, the inner position of the heat conducting pipe is provided with inner fins, a disassembly plate is provided at the middle position inside the inner fins, and the inner fins are embedded in the inner wall of the heat conducting pipe.

[0013] Compared with the prior art, the present invention provides a boiler drum equipped with a preheating device, which has the following beneficial effects: 1. Through the arrangement of the air supply main pipe, air supply side pipe, connecting pipe, mixing pipe, fuel delivery main pipe and fuel delivery branch pipe, the air supply main pipe at the bottom of the air supply pipe and the air supply side pipe at the right end form a multi-channel air supply structure. The air supply main pipe blows the fuel in the connecting pipe into the mixing pipe, and cooperates with the air supply side pipe to blow the side cyclone from the bottom, which greatly improves the combustion efficiency of the fuel and makes the fuel burn more fully. There are four connecting pipe annular arrays, which increase the mixing channel of fuel and air and improve the mixing effect. The connecting flange on the middle and outer side of the connecting pipe and the fuel delivery branch pipe are respectively connected to the flange of the connecting pipe, so that the connection is stable and easy to install and disassemble. The fuel delivery branch pipe and the connecting pipe are respectively provided with control valves to facilitate the control of the fuel delivery amount and realize precise adjustment of the combustion process. At the same time, the fuel delivery branch pipe and the connecting pipe can be disassembled and repaired separately, which greatly facilitates the maintenance and maintenance of the equipment and reduces the maintenance cost and time.

[0014] 2. Through the arrangement of smoke inlet pipe, heat pipe, smoke removal box, dust collecting box, water inlet, water outlet, filter box and air outlet, the smoke inlet pipe arranged in an array above the air outlet pipe can efficiently collect smoke and introduce it into the heat pipe. The smoke removal box outside the heat pipe can perform preliminary treatment on the smoke. Secondly, the dust collecting box at the bottom of the heat pipe can collect dust and other impurities in the smoke, which plays a role in preliminary purification. The water inlet at the lower right side of the smoke removal box and the water outlet at the upper left side facilitate water circulation, and use water and smoke for heat exchange, which can reduce the smoke temperature on the one hand and recover heat on the other hand to improve energy utilization efficiency. The filter box on the top of the smoke removal box further filters the smoke, making the smoke finally discharged from the air outlet cleaner and reducing pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the air supply duct in the present invention.

[0017] Figure 3 It is a structural schematic diagram of the smoke removal box in the present invention.

[0018] Figure 4 It is a structural schematic diagram of the cross section of the heat conduction pipe in the present invention.

[0019] In the figure: 1. Air supply device body; 2. Air supply pipe; 3. Connecting flange; 4. Incinerator; 5. Air outlet pipe; 6. Smoke removal box; 7. Fuel delivery main pipe; 8. Air supply main pipe; 9. Air supply side pipe; 10. Fuel delivery branch pipe; 11. Connecting pipe; 12. Mixing pipe; 13. Water inlet; 14. Water outlet; 15. Smoke inlet pipe; 16. Dust collection box; 17. Heat transfer pipe; 18. Filter box; 19. Air outlet; 20. Heat transfer fins; 21. Inner fins; 22. Disassembly plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The present invention provides Figure 1-4 A boiler drum provided with a preheating device is shown, comprising an air supply device body 1; An air supply pipe 2 is arranged at the right side of the air supply device body 1, an incinerator 4 is arranged at the right side of the air supply pipe 2, and an air outlet pipe 5 is arranged at the right side of the incinerator 4; An air supply main pipe 8 is arranged at the bottom of the air supply pipe 2 , and an air supply side pipe 9 is arranged at the right end of the air supply pipe 2 .

[0022] A connecting pipe 11 is arranged at the right side of the air supply main pipe 8 , a mixing pipe 12 is arranged at the right side of the connecting pipe 11 , and a fuel delivery main pipe 7 is arranged above the connecting pipe 11 .

[0023] A fuel delivery branch pipe 10 is provided at the bottom of the fuel delivery main pipe 7, four connecting pipes 11 are provided in a circular array, a connecting flange 3 is provided at the middle outer position of the connecting pipe 11, and the fuel delivery branch pipes 10 are flange-connected to the connecting pipes 11 respectively.

[0024] The air supply side pipe 9 is fixedly connected to the bottom of the mixing pipe 12 , a connecting flange 3 is provided at the left side of the air supply side pipe 9 , and the air supply side pipe 9 is connected to the end flange of the air supply pipe 2 .

[0025] The air supply main pipe 8 blows the fuel in the connecting pipe 11 into the mixing pipe 12, and the air supply side pipe 9 blows the side cyclone from the bottom. The fuel delivery branch pipe 10 and the connecting pipe 11 are respectively provided with control valves, and the fuel delivery branch pipe 10 and the connecting pipe 11 can be disassembled and repaired separately.

[0026] Smoke inlet pipes 15 are arranged in an array above the air outlet pipes 5 , heat pipes 17 are arranged above the smoke inlet pipes 15 , smoke removal boxes 6 are arranged outside the heat pipes 17 arranged in an array, and dust collection boxes 16 are arranged at the bottom of the heat pipes 17 .

[0027] A water inlet 13 is provided at the lower right side of the smoke removal box 6 , a water outlet 14 is provided at the upper left side of the smoke removal box 6 , a filter box 18 is provided at the top of the smoke removal box 6 , and an air outlet 19 is provided at the top of the filter box 18 .

[0028] An array of heat conducting fins 20 is arranged outside the heat conducting tube 17 , an inner fin 21 is arranged inside the heat conducting tube 17 , a disassembly plate 22 is arranged at the middle position inside the inner fin 21 , and the inner fin 21 is embedded in the inner wall of the heat conducting tube 17 .

[0029] In the present embodiment, a specific implementation step of a boiler drum provided with a preheating device is to start the air supply device main body 1, and air is supplied to the air supply pipe 2. The air supply main pipe 8 blows air into the connecting pipe 11, and the fuel delivery main pipe 7 delivers fuel into the connecting pipe 11 through the fuel delivery branch pipe 10. The air and fuel are mixed in the connecting pipe 11 and enter the mixing pipe 12. The air supply side pipe 9 blows into the side cyclone from the bottom to promote fuel combustion. After the fuel is burned in the incinerator 4, the generated flue gas enters the smoke inlet pipe 15 through the air outlet pipe 5, and the smoke enters the heat conduction pipe 17 from the smoke inlet pipe 15. In the heat conduction pipe 17, the heat of the smoke is transferred to the water in the smoke removal box 6 through the heat conduction fins 20 and the inner fins 21, so that the water is heated. At the same time, the dust and harmful substances in the smoke fall into the dust collecting box 16 under the action of gravity. The smoke that has been preliminarily treated enters the smoke removal box 6. In the smoke removal box 6, the smoke is cooled to further remove dust and harmful substances. The smoke filtered by the filter box 18 is discharged from the air outlet 19.

[0030] like Figure 1 and Figure 2 As shown, an air supply main pipe 8 is provided at the bottom of the air supply pipe 2, an air supply side pipe 9 is provided at the right end position of the air supply pipe 2, a connecting pipe 11 is provided at the right position of the air supply main pipe 8, a mixing tube 12 is provided at the right position of the connecting pipe 11, a fuel delivery main pipe 7 is provided at the upper position of the connecting pipe 11, a fuel delivery branch pipe 10 is provided at the bottom position of the fuel delivery main pipe 7, four connecting pipes 11 are provided in a circular array, a connecting flange 3 is provided at the middle outer position of the connecting pipe 11, the fuel delivery branch pipes 10 are respectively flange-connected to the connecting pipe 11, the air supply side pipe 9 is fixedly connected to the bottom of the mixing tube 12, a connecting flange 3 is provided at the left position of the air supply side pipe 9, the air supply side pipe 9 is flange-connected to the end of the air supply pipe 2, the air supply main pipe 8 blows the fuel in the connecting pipe 11 into the mixing tube 12, and the air supply side pipe 9 blows into the side cyclone from the bottom, the fuel delivery branch pipe 10 and the connecting pipe 11 are respectively provided with control valves, and the fuel delivery branch pipe 10 and the connecting pipe 11 can be disassembled and repaired separately.

[0031] Preferably, the air supply main pipe 8 at the bottom of the air supply pipe 2 and the air supply side pipe 9 at the right end form a multi-channel air supply structure. The air supply main pipe 8 blows the fuel in the connecting pipe 11 into the mixing pipe 12, and cooperates with the air supply side pipe 9 to blow the side cyclone from the bottom, which greatly improves the combustion efficiency of the fuel and makes the fuel burn more fully. The connecting pipes 11 are provided with four annular arrays, which increase the mixing channel of fuel and air and improve the mixing effect. The connecting flange 3 on the middle and outer sides of the connecting pipe 11 and the fuel delivery branch pipe 10 are respectively connected to the flange of the connecting pipe 11, so that the connection is stable and easy to install and disassemble. The fuel delivery branch pipe 10 and the connecting pipe 11 are respectively provided with control valves to facilitate the control of the fuel delivery amount and realize precise adjustment of the combustion process. At the same time, the fuel delivery branch pipe 10 and the connecting pipe 11 can be disassembled and repaired separately, which greatly facilitates the maintenance and maintenance of the equipment and reduces the maintenance cost and time.

[0032] like Figure 1 and Figure 3-4 As shown, smoke inlet pipes 15 are arranged in an array above the air outlet pipe 5, heat conduction pipes 17 are arranged above the smoke inlet pipes 15, smoke removal boxes 6 are arranged at the outer sides of the heat conduction pipes 17 arranged in an array, dust collection boxes 16 are arranged at the bottom of the heat conduction pipes 17, a water inlet 13 is arranged at the lower right side of the smoke removal box 6, a water outlet 14 is arranged at the upper left side of the smoke removal box 6, a filter box 18 is arranged at the top of the smoke removal box 6, and an air outlet 19 is arranged at the top of the filter box 18.

[0033] Preferably, the smoke inlet pipes 15 arranged in an array above the air outlet pipe 5 can efficiently collect smoke and introduce it into the heat conducting pipe 17. The smoke removal box 6 outside the heat conducting pipe 17 can perform preliminary treatment on the smoke. Secondly, the dust collecting box 16 at the bottom of the heat conducting pipe 17 can collect dust and other impurities in the smoke, which plays a role in preliminary purification. The water inlet 13 at the lower right side of the smoke removal box 6 and the water outlet 14 at the upper left side facilitate the circulation of water and utilize water to exchange heat with the smoke. On the one hand, the smoke temperature is reduced, and on the other hand, heat can be recovered to improve energy utilization efficiency. The filter box 18 on the top of the smoke removal box 6 further filters the smoke, so that the smoke finally discharged from the air outlet 19 is cleaner and reduces pollution to the environment.

[0034] like Figure 1-4 As shown, a heat conducting fin 20 is arranged in an array outside the heat conducting tube 17 , an inner fin 21 is arranged inside the heat conducting tube 17 , a disassembly plate 22 is arranged at the middle position inside the inner fin 21 , and the inner fin 21 is embedded in the inner wall of the heat conducting tube 17 .

[0035] Optionally, the heat-conducting fins 20 arranged in an array on the outside of the heat-conducting pipe 17 can increase the contact area with the outside, improve the heat exchange efficiency, and better realize the transfer and recycling of heat. The inner fins 21 inside the heat-conducting pipe 17 further increase the contact area with the flue gas and improve the heat exchange effect. The inner fins 21 are embedded in the inner wall of the heat-conducting pipe 17, and the connection is firm and not easy to fall off. The disassembly plate 22 at the middle position on the inner side of the inner fins 21 facilitates the installation and disassembly of the inner fins 21, facilitates the subsequent maintenance and cleaning, and ensures the long-term and efficient operation of the heat-conducting pipe 17.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boiler drum provided with a preheating device, comprising an air supply device body (1); An air supply pipe (2) is arranged at the right side of the air supply device body (1), an incinerator (4) is arranged at the right side of the air supply pipe (2), and an air outlet pipe (5) is arranged at the right side of the incinerator (4); Features: An air supply main pipe (8) is arranged at the bottom of the air supply pipe (2), and an air supply side pipe (9) is arranged at the right end of the air supply pipe (2).

2. A boiler drum with a preheating device according to claim 1, characterized in that: A connecting pipe (11) is arranged at the right side of the air supply main pipe (8), a mixing pipe (12) is arranged at the right side of the connecting pipe (11), and a fuel delivery main pipe (7) is arranged above the connecting pipe (11).

3. A boiler drum with a preheating device according to claim 2, characterized in that: A fuel delivery branch pipe (10) is arranged at the bottom of the fuel delivery main pipe (7), four connecting pipes (11) are arranged in an annular array, a connecting flange (3) is arranged at the middle outer position of the connecting pipe (11), and the fuel delivery branch pipes (10) are respectively connected to the connecting pipe (11) flanges.

4. A boiler drum with a preheating device according to claim 3, characterized in that: The air supply side pipe (9) is fixedly connected to the bottom of the mixing pipe (12), a connecting flange (3) is provided at the left side of the air supply side pipe (9), and the air supply side pipe (9) is connected to the end flange of the air supply pipe (2).

5. A boiler drum with a preheating device according to claim 4, characterized in that: The air supply main pipe (8) blows the fuel in the connecting pipe (11) into the mixing pipe (12), and the air supply side pipe (9) blows the fuel into the side cyclone from the bottom. The fuel delivery branch pipe (10) and the connecting pipe (11) are respectively provided with control valves, and the fuel delivery branch pipe (10) and the connecting pipe (11) can be disassembled and repaired separately.

6. A boiler drum with a preheating device according to claim 1, characterized in that: Smoke inlet pipes (15) are arranged in an array above the air outlet pipes (5), heat conduction pipes (17) are arranged above the smoke inlet pipes (15), smoke removal boxes (6) are arranged outside the heat conduction pipes (17) arranged in an array, and dust collection boxes (16) are arranged at the bottom of the heat conduction pipes (17).

7. A boiler drum with a preheating device according to claim 6, characterized in that: A water inlet (13) is provided at a lower position on the right side of the smoke removal box (6), a water outlet (14) is provided at an upper position on the left side of the smoke removal box (6), a filter box (18) is provided at a top position of the smoke removal box (6), and an air outlet (19) is provided at a top position of the filter box (18).

8. A boiler drum with a preheating device according to claim 1, characterized in that: The heat conducting pipe (17) is provided with a heat conducting fin array on the outside, an inner fin (21) is provided at an inner position of the heat conducting pipe (17), a disassembly plate (22) is provided at a middle position inside the inner fin (21), and the inner fin (21) is embedded in the inner wall of the heat conducting pipe (17).

Images