Waste heat boiler tube structure capable of preventing blockage

Abstract

The utility model discloses a waste heat boiler tube structure capable of preventing blockage, which relates to the technical field of auxiliary parts of waste heat boilers and comprises a furnace wall, a furnace opening is formed in the furnace wall, an L-shaped outer boiler tube is inserted into the furnace opening in a penetrating manner, and a fan assembly is mounted in one end, penetrating through the furnace opening, of the L-shaped outer boiler tube. An outer expansion cover is arranged at the end, penetrating through the furnace opening, of the L-shaped outer furnace pipe, when a worker removes ash, dust flies in the furnace body, at the moment, a motor in the L-shaped outer furnace pipe works to drive a fan assembly to rotate, suction force is generated, the flying dust in the furnace can be rapidly sucked out of the furnace body, and the dust removal efficiency is improved. The dust enters the dust filter through the T-shaped pipe and the branch pipe to be filtered; when dust enters the L-shaped outer furnace tube, the dust preferentially enters the outer expansion cover, and before entering the outer expansion cover, the dust is filtered by the filter screen, so that the fan assembly is prevented from being damaged by large-particle dust.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat boiler auxiliary parts, in particular to a waste heat boiler furnace tube structure capable of preventing blockage. Background Art

[0002] During the waste heat recovery process of the waste heat boiler, it needs to be transferred to the working medium through various heat exchange equipment. If these heat exchange equipment have problems such as dust accumulation and scaling, or the working medium flows poorly, it may affect the heat transfer efficiency and even cause blockage. Therefore, it is necessary to clean the boiler regularly. One of the traditional cleaning methods is to use the jet dynamic pressure head of the soot blowing medium (such as steam, compressed air, compressed ammonia or water, etc.) to clean the smoke and dust adhered to the heating surface. Large waste heat boilers are even equipped with hundreds of soot blowers, which are cleaned according to program control. The advantage of soot blowing is the fast cleaning speed.

[0003] In the process of implementing the solution, the inventor found that the following problems in the prior art have not been well solved: However, when soot blowing, the boiler intersection is open, which will cause a large amount of smoke and dust to be blown out from the furnace mouth into the outside atmosphere, causing pollution to the outside air. Although a lot of dust can fall off, due to the large area inside the furnace, when it does not fly out of the furnace, it will settle to the ground, resulting in the need to clean the settled dust later, which increases the workload and often causes cleaning omissions. When the furnace body is working in the later stage, the risk of blockage is increased. The staff works in the furnace with flying dust for a long time, which increases the filtering burden of the staff's filter mask. Utility Model Content

[0004] The main purpose of the utility model is to provide a waste heat boiler furnace tube structure which can prevent blockage and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A waste heat boiler furnace tube structure capable of preventing blockage comprises a furnace wall, a furnace opening is bored on the furnace wall, an L-shaped outer furnace tube is inserted through the interior of the furnace opening, a fan assembly is installed in the interior of the L-shaped outer furnace tube passing through one end of the furnace opening, an outward expansion cover is provided at the end of the L-shaped outer furnace tube passing through the furnace opening, a filter is provided inside the outward expansion cover, a fixing frame is fixed to the L-shaped outer furnace tube at the end of the fan assembly away from the outward expansion cover, a motor is installed on the fixing frame, the output end of the motor is connected to the shaft end of the fan assembly, a T-shaped tube is connected to the bottom of the end of the L-shaped outer furnace tube away from the outward expansion cover, four branch tubes are connected to the bottom of the T-shaped tube, and dust filters are connected to the ends of the branch tubes away from the T-shaped tube.

[0007] Preferably, a flange assembly is provided between the L-shaped outer furnace tube and the T-shaped tube, and the L-shaped outer furnace tube and the T-shaped tube are detachably connected via the flange assembly.

[0008] Preferably, three ear plates 1 are fixed to the outer wall of the L-shaped outer furnace tube near one end of the outward expansion cover, ear plate 2 is fixed to the outer wall of the outward expansion cover at the position of ear plate 1, screw rod 2 is fixed to the side of ear plate 2 near ear plate 1, and nut 2 is threadedly connected to the outer wall of screw 2.

[0009] Preferably, the second screw rod is respectively connected to the first ear plate of matching position, and the second nut is respectively located on the side of the first ear plate away from the second ear plate.

[0010] Preferably, the outer wall of the L-shaped outer furnace tube away from the outer expansion cover is provided with a connecting plate, and the end of the connecting plate away from the L-shaped outer furnace tube is provided with an electromagnet, and the electromagnets are magnetically connected to the furnace wall respectively.

[0011] Preferably, the outer wall of the L-shaped outer furnace tube at the connecting plate position is fixed with a screw rod 1, and the screw rod 1 is respectively connected with the connecting plate matching the position, and the screw rod 1 passes through the outer wall of one end of the connecting plate and is threadedly connected with a nut 1.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] When the staff is cleaning, dust will fly in the furnace body. At this time, the motor in the L-shaped outer furnace tube will drive the fan assembly to rotate, thereby generating suction, which can quickly suck the flying dust out of the furnace body and enter the dust filter through the T-shaped tube and branch tube for filtration;

[0014] When dust enters the L-shaped outer furnace tube, it will first enter the inner part of the outer expansion cover. Before entering the outer expansion cover, it will be filtered by the filter to prevent large particles of dust from causing damage to the fan assembly.

[0015] This external furnace pipe structure for rapid dust exhaust outside the furnace not only avoids the pollution problem caused by the exhaust of smoke and dust, but also allows the dust inside the furnace to be separated from the furnace, avoiding precipitation in the furnace and increasing the filtering burden on the filter masks of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of one side structure of a waste heat boiler furnace tube structure capable of preventing blockage according to the utility model;

[0017] Figure 2 This is a schematic structural diagram of the other side of a waste heat boiler furnace tube structure capable of preventing blockage according to the utility model;

[0018] Figure 3It is a cross-sectional structural schematic diagram of an L-shaped outer furnace tube and an outer expansion cover of a waste heat boiler furnace tube structure capable of preventing blockage according to the utility model;

[0019] Figure 4 This is an enlarged structural diagram of position A of a waste heat boiler furnace tube structure capable of preventing blockage according to the utility model;

[0020] Figure 5 This is a schematic diagram of the enlarged structure of position B of a waste heat boiler furnace tube structure capable of preventing blockage according to the utility model.

[0021] In the figure: 1. furnace wall; 11. furnace mouth; 2. L-shaped outer furnace tube; 21. fan assembly; 22. fixing bracket; 23. motor; 24. screw rod 1; 25. nut 1; 26. ear plate 1; 3. T-shaped tube; 31. branch pipe; 32. dust filter; 4. external expansion cover; 41. filter screen; 42. ear plate 2; 43. screw rod 2; 44. nut 2; 5. connecting plate; 51. electromagnet; 6. flange assembly. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-5 As shown, a waste heat boiler furnace tube structure capable of preventing blockage comprises a furnace wall 1, a furnace opening 11 is bored on the furnace wall 1, an L-shaped outer furnace tube 2 is inserted through the furnace opening 11, a fan assembly 21 is installed in the interior of one end of the L-shaped outer furnace tube 2 passing through the furnace opening 11, an outward expansion cover 4 is arranged at the end of the L-shaped outer furnace tube 2 passing through the furnace opening 11, a filter screen 41 is arranged inside the outward expansion cover 4, a fixing frame 22 is fixed inside the end of the L-shaped outer furnace tube 2 located away from the outward expansion cover 4, a motor 23 is installed on the fixing frame 22, an output end of the motor 23 is connected to the shaft end of the fan assembly 21, a T-shaped tube 3 is connected to the bottom of the end of the L-shaped outer furnace tube 2 away from the outward expansion cover 4, four branch pipes 31 are connected to the bottom of the T-shaped tube 3, and dust filters 32 are connected to the ends of the branch pipes 31 away from the T-shaped tube 3.

[0024] Specifically, a flange assembly 6 is provided between the L-shaped outer furnace tube 2 and the T-shaped tube 3, and the L-shaped outer furnace tube 2 and the T-shaped tube 3 are detachably connected via the flange assembly 6, so that the L-shaped outer furnace tube 2 and the T-shaped tube 3 are convenient to disassemble and assemble, and dust in the T-shaped tube 3 is convenient to clean after disassembly.

[0025] Specifically, three ear plates 26 are fixed to the outer wall of the L-shaped outer furnace tube 2 near one end of the outward expansion cover 4, and ear plates 42 are fixed to the outer wall of the outward expansion cover 4 located at the position of ear plates 26. Screw rods 43 are fixed to the side of the ear plates 42 near the ear plates 26, and nuts 44 are threadedly connected to the outer walls of the screw rods 43. The screw rods 43 are respectively connected to the ear plates 26 with matching positions, and the nuts 44 are respectively located on the side of the ear plates 26 away from the ear plates 42, so that the outward expansion cover 4 and the L-shaped outer furnace tube 2 can be easily disassembled and assembled. The outward expansion cover 4 can be inserted from the furnace mouth 11 into the interior of the furnace wall 1 in an inclined manner, and then the L-shaped outer furnace tube 2 is inserted, and finally the L-shaped outer furnace tube 2 and the outward expansion cover 4 are assembled. The furnace wall 1 proposed in the present application only represents a part of the boiler, not the original appearance of the boiler.

[0026] Specifically, the outer wall of the L-shaped outer furnace tube 2 away from the outer expansion cover 4 is provided with a connecting plate 5, and the end of the connecting plate 5 away from the L-shaped outer furnace tube 2 is provided with an electromagnet 51. The electromagnets 51 are magnetically connected to the furnace wall 1 respectively, so that the L-shaped outer furnace tube 2 can be quickly limited to the outer wall of the furnace wall 1, ensuring the stability of the L-shaped outer furnace tube 2 during use.

[0027] Specifically, the outer wall of the L-shaped outer furnace tube 2 located at the connecting plate 5 is fixed with a screw 24, and the screw 24 is respectively connected to the connecting plate 5 matching the position, and the screw 24 passes through the outer wall of one end of the connecting plate 5 and is threadedly connected with a nut 25, so that the L-shaped outer furnace tube 2 can be disassembled and assembled with the connecting plate 5 at any time.

[0028] Working principle:

[0029] When the staff is cleaning the dust, the dust will fly in the furnace body. At this time, the motor 23 in the L-shaped outer furnace tube 2 will drive the fan assembly 21 to rotate, thereby generating suction, which can quickly suck the flying dust in the furnace out of the furnace body and enter the dust filter 32 through the T-shaped tube 3 and the branch tube 31 for filtration;

[0030] When dust enters the L-shaped outer furnace tube 2, it will first enter the interior of the outer expansion cover 4. Before entering the outer expansion cover 4, it will first be filtered by the filter 41 to prevent large particles of dust from causing damage to the fan assembly 21;

[0031] This external furnace pipe structure for rapid dust exhaust outside the furnace not only avoids the pollution problem caused by the exhaust of smoke and dust, but also allows the dust inside the furnace to be separated from the furnace, avoiding precipitation in the furnace and increasing the filtering burden on the filter masks of the workers.

[0032] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A waste heat boiler furnace tube structure capable of preventing blockage, comprising a furnace wall (1), characterized in that: A furnace opening (11) is cut on the furnace wall (1), an L-shaped outer furnace pipe (2) is inserted through the furnace opening (11), a fan assembly (21) is installed inside one end of the L-shaped outer furnace pipe (2) passing through the furnace opening (11), an outer expansion cover (4) is arranged at the end of the L-shaped outer furnace pipe (2) passing through the furnace opening (11), a filter screen (41) is arranged inside the outer expansion cover (4), and the L-shaped outer furnace pipe (2) is located away from the fan assembly (21) and the outer expansion cover (4) is provided. A fixing frame (22) is fixed inside one end of the outer furnace tube (4), a motor (23) is installed on the fixing frame (22), an output end of the motor (23) is connected to the shaft end of the fan assembly (21), a T-shaped tube (3) is connected to the bottom of the end of the L-shaped outer furnace tube (2) away from the outer expansion cover (4), four branch tubes (31) are connected to the bottom of the T-shaped tube (3), and a dust filter (32) is connected to the end of each branch tube (31) away from the T-shaped tube (3).

2. The waste heat boiler tube structure capable of preventing blockage according to claim 1, characterized in that: A flange assembly (6) is provided between the L-shaped outer furnace tube (2) and the T-shaped tube (3), and the L-shaped outer furnace tube (2) and the T-shaped tube (3) are detachably connected via the flange assembly (6).

3. The waste heat boiler tube structure capable of preventing blockage according to claim 1, characterized in that: Three ear plates (26) are fixed to the outer wall of the L-shaped outer furnace tube (2) near one end of the outward expansion cover (4), and ear plates (42) are fixed to the outer wall of the outward expansion cover (4) at the position of ear plates (26). Screw rods (43) are fixed to one side of the ear plates (42) near the ear plates (26), and nuts (44) are threadedly connected to the outer walls of the screw rods (43).

4. The waste heat boiler tube structure capable of preventing blockage according to claim 3, characterized in that: The second screw rod (43) is respectively connected to the first ear plate (26) with matching position, and the second nut (44) is respectively located on the side of the first ear plate (26) away from the second ear plate (42).

5. The waste heat boiler tube structure capable of preventing blockage according to claim 1, characterized in that: The outer wall of the L-shaped outer furnace tube (2) at one end away from the outer expansion cover (4) is provided with a connecting plate (5), and the end of the connecting plate (5) away from the L-shaped outer furnace tube (2) is provided with an electromagnet (51), and the electromagnets (51) are respectively magnetically connected to the furnace wall (1).

6. The waste heat boiler tube structure capable of preventing blockage according to claim 5, characterized in that: The outer wall of the L-shaped outer furnace tube (2) at the position of the connecting plate (5) is fixed with a screw rod (24), and the screw rod (24) is respectively connected to the connecting plate (5) at a matching position, and the screw rod (24) passes through the outer wall of one end of the connecting plate (5) and is threadedly connected with a nut (25).

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