Three-boiler-barrel type steam boiler facilitating convection section ash removal

Abstract

The invention discloses a three-drum steam boiler convenient for convection section deashing, which comprises a shell, a support fixedly connected to the bottom of the shell, an air outlet pipe arranged at the top of the shell and used for discharging steam, smoke boxes arranged at two ends of the shell, a front pipe plate arranged at one end of the shell, and a convection pipe arranged on one side of the front pipe plate and used for conveying smoke. A cleaning disc used for cleaning ash is arranged in the convection pipe, a rotating rod is arranged in the convection pipe, and one side of the front pipe plate is fixedly connected with a reversal chamber. According to the three-boiler-barrel type steam boiler facilitating convection section ash removal, through cooperative arrangement of the shell, the smoke box, the front pipe plate, the convection pipe, the cleaning disc and the rotating rod, when the three-boiler-barrel type steam boiler facilitating convection section ash removal is used, the device can conveniently clean ash generated by internal combustion, the cleanliness degree of the cleaned ash is improved, and therefore heat loss during heat transfer is reduced, and the service life of the boiler is prolonged. The working efficiency of the device is improved, the smoke box and the front tube plate can be fixed through the shell, and therefore the device is kept stable in the using process.

Description

Technical Field

[0001] The invention relates to the technical field of three-drum steam boilers, in particular to a three-drum steam boiler which is convenient for cleaning the convection section. Background Art

[0002] During the operation of a traditional three-drum steam boiler, the cleaning of the convection section has always been a rather thorny problem. As the boiler continues to operate, the soot produced by combustion will gradually accumulate on the inner walls of the convection section components such as the convection tube. The accumulation of these soot will seriously affect the heat transfer efficiency of the boiler, because the soot layer is equivalent to adding a layer of thermal resistance to the heat transfer path, making it difficult for heat to be effectively transferred from the flue gas to the working fluid, thereby causing a large amount of heat loss, increasing energy consumption, and reducing the overall working efficiency of the boiler. Moreover, the structural design of traditional boilers makes the convection section cleaning operation often very difficult, usually requiring a lot of manpower and time, and it is difficult to completely remove the soot on the inner wall of the convection tube, and the cleanliness after cleaning is also difficult to ensure, the cleaning effect is not good, and there are certain safety hazards. In order to solve these problems, improve the convenience and cleaning effect of the boiler convection section, and improve the thermal efficiency and overall operating performance of the boiler, the present invention provides a three-drum steam boiler that is convenient for convection section cleaning.

[0003] However, the existing device has the following problems: after long-term use, dust will adhere to the inner wall of the convection section pipe, which is inconvenient to clean, difficult to clean thoroughly, and takes a long time, resulting in long device downtime, affecting the working efficiency of the device. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a three-drum steam boiler which is convenient for cleaning the convection section. The boiler has the advantages of being able to more conveniently collect and clean the dust attached to the inner wall of the convection section pipe, and the inner wall of the convection pipe is cleaner after cleaning, thus solving the problem of inconvenient and incomplete cleaning of the dust attached to the inner wall of the convection section pipe of the device.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a three-drum steam boiler which is convenient for cleaning the convection section, comprising an outer shell, a bracket is fixedly connected to the bottom of the outer shell, an exhaust pipe for discharging steam is provided on the top of the outer shell, smoke boxes are provided at both ends of the outer shell, a front tube plate is provided at one end of the outer shell, a convection tube for conveying flue gas is provided on one side of the front tube plate, a cleaning disk for cleaning is provided inside the convection tube, a rotating rod is provided inside the convection tube, and a backfire chamber is fixedly connected to one side of the front tube plate.

[0008] Preferably, the inner wall of the outer shell is fixedly connected to a heat-insulating layer, the inner wall of the heat-insulating layer is fixedly connected to a cylinder, the outer surface of the cylinder is fixedly connected to the bottom of the air outlet pipe, the two ends of the cylinder are fixedly connected to one side of the smoke box, and one end of the cylinder is fixedly connected to a front tube plate.

[0009] Preferably, a chimney interface is fixedly connected to the top of the cylinder, and a water inlet pipe is fixedly connected to the outer surface of the cylinder.

[0010] Preferably, a valve is rotatably connected to one side of the air outlet pipe, and a flange is fixedly connected to the top of the air outlet pipe.

[0011] Preferably, a sealing plate is fixedly mounted on one side of the cigarette box, and a handle is fixedly connected to one side of the sealing plate.

[0012] Preferably, a positioning hole is opened on one side of the front tube plate, and a convection tube is fixedly connected to the inner wall of the positioning hole.

[0013] Preferably, a guide rod is fixedly connected to the inner wall of the convection tube, and limit frames are fixedly installed at both ends of the convection tube.

[0014] Preferably, a slide groove is provided on the outer surface of the cleaning disk, and the inner wall of the slide groove is slidably connected to the inner wall of the guide rod. A threaded hole is provided on one side of the cleaning disk, and the inner wall of the threaded hole is threadedly connected to the outer surface of the rotating rod.

[0015] Preferably, both ends of the rotating rod are fixedly connected with connecting rods, the outer surface of the connecting rod is rotatably connected to the inner wall of the limiting frame, one end of the connecting rod is fixedly mounted with a knob, and the outer surface of the knob is fixedly connected with a handle.

[0016] Beneficial Effects

[0017] Compared with the prior art, the present invention provides a three-drum steam boiler that is convenient for cleaning the convection section, and has the following beneficial effects:

[0018] The three-drum steam boiler convenient for cleaning the convection section can conveniently clean the soot generated by internal combustion during use through the coordinated arrangement of the outer shell, the smoke box, the front tube plate, the convection tube, the cleaning disk and the rotating rod, and can improve the cleanliness of the soot after cleaning, thereby reducing heat loss during heat transfer and improving the working efficiency of the device. The outer shell can fix the smoke box and the front tube plate, so that the device remains stable during use and reduces noise generation. The smoke box can block the smoke generated by combustion and reduce leakage, and can be disassembled to facilitate staff to clean the inside of the device. The front tube plate can fix the convection tube and guide the smoke to improve the heating efficiency of the device. The convection tube can transport the smoke, and can limit the moving direction of the cleaning disk so that the cleaning disk fits the inner wall of the convection tube. The cleaning disk can scrape the soot attached to the inner wall of the convection tube by moving back and forth, thereby increasing the cleanliness of the convection tube. The rotating rod can rotate to facilitate staff to control the position and moving direction of the cleaning disk, thereby improving the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a three-drum steam boiler that is convenient for cleaning the convection section proposed by the present invention;

[0020] Figure 2 A schematic diagram of a shell structure proposed by the present invention;

[0021] Figure 3 A schematic diagram of a convection tube structure proposed by the present invention;

[0022] Figure 4 A schematic diagram of the structure of a cleaning disk proposed by the present invention;

[0023] Figure 5 A schematic diagram of the structure of a smoke box proposed by the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of a reburning chamber proposed by the present invention.

[0025] In the figure: 1. outer shell; 2. bracket; 3. exhaust pipe; 4. smoke box; 5. front tube plate; 6. convection duct; 7. cleaning plate; 8. rotating rod; 9. backfire chamber; 10. insulation layer; 11. cylinder; 12. chimney interface; 13. water inlet pipe; 14. valve; 15. flange; 16. sealing plate; 17. handle; 18. positioning hole; 19. guide rod; 20. limit frame; 21. slide groove; 22. threaded hole; 23. connecting rod; 24. knob; 25. grip. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-6A bracket 2 is fixedly connected to the bottom of the shell 1, smoke boxes 4 are provided at both ends of the shell 1, a front tube plate 5 is provided at one end of the shell 1, a convection tube 6 for conveying smoke is provided on one side of the front tube plate 5, a cleaning plate 7 for cleaning ash is provided inside the convection tube 6, a rotating rod 8 is provided inside the convection tube 6, a backfire chamber 9 is fixedly connected to one side of the front tube plate 5, a thermal insulation layer 10 is fixedly connected to the inner wall of the shell 1, a cylinder 11 is fixedly connected to the inner wall of the thermal insulation layer 10, the outer surface of the cylinder 11 is fixedly connected to the bottom of the outlet pipe 3, both ends of the cylinder 11 are fixedly connected to one side of the smoke box 4, the inner wall of the cylinder 11 is fixedly connected to the front tube plate 5, a sealing plate 16 is fixedly installed on one side of the smoke box 4, a handle 17 is fixedly connected to one side of the sealing plate 16, and a handle 17 is provided on one side of the front tube plate 5. A positioning hole 18 is provided, and a convection tube 6 is fixedly connected to the inner wall of the positioning hole 18. A guide rod 19 is fixedly connected to the inner wall of the convection tube 6. A limit frame 20 is fixedly installed at both ends of the convection tube 6. A slide groove 21 is provided on the outer surface of the cleaning disk 7. The inner wall of the slide groove 21 is slidably connected to the inner wall of the guide rod 19. A threaded hole 22 is provided on one side of the cleaning disk 7. The inner wall of the threaded hole 22 is threadedly connected to the outer surface of the rotating rod 8. A connecting rod 23 is fixedly connected to both ends of the rotating rod 8. The outer surface of the connecting rod 23 is rotatably connected to the inner wall of the limit frame 20. A knob 24 is fixedly installed at one end of the connecting rod 23. A handle 25 is fixedly connected to the outer surface of the knob 24. The outer shell 1 serves as the external protective structure of the entire boiler, which protects the various components inside the device and prevents External factors can damage the internal components of the boiler. At the same time, the outer shell 1 can fix the smoke box 4 and the front tube plate 5 to ensure that the positions of the smoke box 4 and the front tube plate 5 are stable during the operation of the boiler, so that the entire device can remain stable during use, reduce noise caused by shaking of components, etc., and provide protection for the smooth operation of the boiler. The insulation layer 10 is fixedly connected to the inner wall of the outer shell 1. Its main function is to reduce the loss of heat from the inside of the boiler to the external environment and play a role in heat preservation. By reducing the heat loss rate, the heat inside the boiler can be more effectively used to heat the working medium, improve the thermal efficiency of the boiler, and also help save energy and reduce operating costs. The cylinder 11 is an important structure inside the boiler, which connects and supports various components. The exhaust pipe 3, smoke box 4, front tube plate 5 and other components are combined together to ensure the integrity and stability of the entire boiler structure and the normal operation of the boiler. The chimney interface 12 is fixedly connected to the top of the cylinder 11 and is used to connect with the chimney, so that the flue gas generated by the combustion of the boiler can be smoothly discharged into the chimney through the chimney interface 12 after the heat exchange of the convection tube 6 and other components, and then discharged into the external environment to complete the flue gas discharge process. The water inlet pipe 13 is fixedly connected to the outer surface of the cylinder 11, and is a channel for conveying water to the inside of the boiler. The water inlet pipe 13 can continuously convey external water and other working media to the inside of the boiler, providing sufficient working media for the heating, vaporization and other processes of the boiler, ensuring the normal operation of the boiler. The bracket 2 is used to support the entire boiler.It bears the weight of the boiler and its internal media, components, etc., and stably sets up the boiler in a suitable working position to ensure the safety and stability of the boiler during operation, and prevent accidents such as the boiler tilting or collapsing due to unstable support. The smoke box 4 mainly blocks the smoke generated by combustion, preventing the smoke from leaking into the external environment without being treated or fully utilizing its heat, thereby reducing pollution to the surrounding environment and waste of heat. The sealing plate 16 seals the smoke box 4 to prevent smoke leakage. At the same time, the handle 17 facilitates the staff to disassemble the sealing plate 16 so as to enter the smoke box 4 for cleaning, inspection and other maintenance operations, thereby improving the maintainability of the device. The front tube plate 5 is located at one end of the shell 1, and one side is connected to the convection tube 6 Its main function is to fix the convection tube 6, ensure the stable position of the convection tube 6 during the operation of the boiler, prevent the convection tube 6 from being displaced or shaken due to the impact force of the flue gas flow and other factors, and ensure the normal operation of the convection tube 6. The positioning hole 18 plays the role of positioning and fixing the convection tube 6, ensuring the accurate and stable position of the convection tube 6 during the operation of the boiler. The convection tube 6 is a key component of the convection section of the boiler, which is used to transport the flue gas, so that the high-temperature flue gas generated by combustion can flow in the convection tube 6, and the heat in the flue gas is transferred to the water source in the device by convection heat exchange, so as to realize the heating process of the water. The guide rod 19 is fixedly connected to the inner wall of the convection tube 6. Its main function is to limit the moving direction of the cleaning plate 7. By connecting with the cleaning plate 7 The slide groove 21 on the outer surface is slidably connected, so that the cleaning disc 7 can move forward and backward in the convection tube 6 along the direction of the guide rod 19, ensuring that the cleaning disc 7 is closely fitted with the inner wall of the convection tube 6, so as to effectively scrape the soot attached to the inner wall of the convection tube 6 during the cleaning process, thereby improving the heat transfer efficiency. The limit frame 20 is fixedly installed at both ends of the convection tube 6, and its inner wall is rotatably connected to the outer surface of the connecting rod 23 of the rotating rod 8, which plays a role in limiting the rotation range of the rotating rod 8 and supporting the rotating rod 8, ensuring that the rotating rod 8 can perform stable rotation around its axis in the convection tube 6, thereby driving the cleaning disc 7 to move forward and backward through the rotating rod 8, and performing efficient cleaning operations. The threaded hole 22 is opened on one side of the cleaning disc 7, and its inner wall is connected to the outer surface of the rotating rod 8. The surface thread connection provides a threaded connection interface for the connection between the rotating rod 8 and the cleaning disk 7. The knob 24 is fixedly installed at one end of the connecting rod 23, and a handle 25 is fixedly connected to its outer surface. The operator can transfer the rotational force to the rotating rod 8 by holding the handle 25 and rotating the knob 24, and then drive the cleaning disk 7 to move forward and backward through the threaded connection between the rotating rod 8 and the cleaning disk 7, which is convenient for the staff to control the position and movement direction of the cleaning disk 7. The backfire chamber 9 is fixedly connected to one side of the front tube plate 5 and plays an important role in the combustion process of the boiler. It can make the incompletely burned fuel burn again, improve the utilization rate of the fuel, and reduce energy waste. At the same time, it also helps to stabilize the combustion process, make the combustion more complete, and thus improve the thermal efficiency of the boiler.

[0028] An outlet pipe 3 for discharging steam is provided at the top of the shell 1. A valve 14 is rotatably connected to one side of the outlet pipe 3. A flange 15 is fixedly connected to the top of the outlet pipe 3. The outlet pipe 3 is located at the top of the shell 1 and is a channel for discharging steam generated by the boiler. The steam formed by heating, vaporization and other processes is transported from the inside of the boiler to the outside for use in subsequent industrial production, heating and other application scenarios. A valve 14 is rotatably connected to one side of the outlet pipe 3. By operating the valve 14, the discharge flow rate and start and stop of the steam can be controlled, so as to flexibly adjust the steam supply according to actual needs. A flange 15 is fixedly connected to the top of the outlet pipe 3. The flange 15 can be used to connect with external steam pipelines and other equipment to facilitate the transportation and distribution of steam and ensure that the steam can be smoothly transmitted to the required place of use.

[0029] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0030] In summary, when the three-drum steam boiler that is convenient for cleaning the convection section is used, first, water is transported to the inside of the cylinder 11 through the water inlet pipe 13 until a suitable water level is reached, and the connection status of each component is checked, including whether the connection between the outer shell 1 and the bracket 2, the air outlet pipe 3 and the cylinder 11, the smoke box 4 and the cylinder 11, the front tube plate 5 and the cylinder 11, and the convection tube 6 and the front tube plate 5 are firm, to ensure that the boiler will not fail due to loose components during operation, check the status of the valve 14 to ensure that it is in a closed state to prevent premature discharge of steam during the startup process, and secondly, assemble the backfire chamber 9 with the burner so that the smoke generated by the combustion enters the cylinder 11, is preliminarily gathered and buffered in the smoke box 4, and is guided by the front tube plate 5 to enter the convection tube 6. In the convection tube 6, the high-temperature smoke transfers heat to the water source inside the device by means of convection heat exchange, so that the temperature of the water source increases, thereby realizing the heating process of the water source, and heating it to a certain degree, The water source is converted into steam and discharged from the device through the exhaust pipe 3. Then, when the boiler has been running for a period of time, a certain amount of soot will adhere to the inner wall of the convection tube 6. At this time, the boiler needs to be turned off and the soot cleaning operation can be performed after it cools down. The sealing plate 16 can be removed from the smoke box 4 by holding the handle 17, so that the staff can hold the handle 25 and rotate the knob 24. The knob 24 drives the connecting rod 23 to rotate, and then the rotating rod 8 rotates around its axis in the limit frame 20. The rotation of the rotating rod 8 will drive the cleaning disk 7 to move back and forth in the convection tube 6 along the direction of the guide rod 19. During the movement, the cleaning disk 7 will scrape the soot attached to the inner wall of the convection tube 6 and remove the soot from the inner wall of the convection tube 6. The staff can rotate the knob 24 multiple times as needed to make the cleaning disk 7 move repeatedly in the convection tube 6 until the soot on the inner wall of the convection tube 6 is cleaned. Finally, the sealing plate 16 is reinstalled and the connection of each component is checked again.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-drum steam boiler for convenient convection section cleaning, comprising a shell (1), characterized in that: The bottom of the shell (1) is fixedly connected to a bracket (2), the top of the shell (1) is provided with an exhaust pipe (3) for exhausting steam, both ends of the shell (1) are provided with smoke boxes (4), one end of the shell (1) is provided with a front tube plate (5), one side of the front tube plate (5) is provided with a convection tube (6) for conveying smoke, the interior of the convection tube (6) is provided with a cleaning plate (7) for cleaning, the interior of the convection tube (6) is provided with a rotating rod (8), and one side of the front tube plate (5) is fixedly connected to a backfire chamber (9).

2. A three-drum steam boiler that facilitates convection section cleaning according to claim 1, characterized in that: The inner wall of the outer shell (1) is fixedly connected to a heat-insulating layer (10), the inner wall of the heat-insulating layer (10) is fixedly connected to a cylinder (11), the outer surface of the cylinder (11) is fixedly connected to the bottom of the air outlet pipe (3), the two ends of the cylinder (11) are fixedly connected to one side of the smoke box (4), and the inner wall of the cylinder (11) is fixedly connected to a front tube plate (5).

3. A three-drum steam boiler that facilitates convection section cleaning according to claim 2, characterized in that: The top of the cylinder (11) is fixedly connected to a chimney interface (12), and the outer surface of the cylinder (11) is fixedly connected to a water inlet pipe (13).

4. A three-drum steam boiler that facilitates convection section cleaning according to claim 1, characterized in that: A valve (14) is rotatably connected to one side of the air outlet pipe (3), and a flange (15) is fixedly connected to the top of the air outlet pipe (3).

5. A three-drum steam boiler that facilitates convection section cleaning according to claim 1, characterized in that: A sealing plate (16) is fixedly mounted on one side of the cigarette box (4), and a handle (17) is fixedly connected to one side of the sealing plate (16).

6. A three-drum steam boiler that facilitates convection section cleaning according to claim 1, characterized in that: A positioning hole (18) is provided on one side of the front tube plate (5), and a convection tube (6) is fixedly connected to the inner wall of the positioning hole (18).

7. A three-drum steam boiler that facilitates convection section cleaning according to claim 1, characterized in that: The inner wall of the convection tube (6) is fixedly connected with a guide rod (19), and both ends of the convection tube (6) are fixedly mounted with a limit frame (20).

8. A three-drum steam boiler that facilitates convection section cleaning according to claim 7, characterized in that: The outer surface of the cleaning disk (7) is provided with a slide groove (21), the inner wall of the slide groove (21) is slidably connected to the inner wall of the guide rod (19), and one side of the cleaning disk (7) is provided with a threaded hole (22), the inner wall of the threaded hole (22) is threadedly connected to the outer surface of the rotating rod (8).

9. A three-drum steam boiler that facilitates convection section cleaning according to claim 7, characterized in that: The two ends of the rotating rod (8) are fixedly connected to connecting rods (23), the outer surface of the connecting rod (23) is rotatably connected to the inner wall of the limiting frame (20), one end of the connecting rod (23) is fixedly mounted with a knob (24), and the outer surface of the knob (24) is fixedly connected to a handle (25).

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