A finned tube for use in heat pipe economizers

Abstract

This utility model discloses a finned tube for a heat pipe economizer, relating to the field of finned tube technology. It includes a finned tube body and a triggering assembly. The triggering assembly includes a groove formed on the finned tube body, with two sliding blocks slidably connected to the groove. A shape memory alloy wire connects the two sliding blocks. A striking assembly includes a push rod located at the top of the finned tube body, with a hammer connected to the side of the push rod away from the shape memory alloy wire. By setting up the striking assembly, dust adhering to the surface of the finned tube is dislodged, effectively preventing ash accumulation and the formation of a heat insulation layer, maintaining stable heat transfer efficiency, ensuring full recovery of waste heat from flue gas, and reducing energy waste.

Description

Technical Field

[0001] This utility model relates to the field of finned tube technology, specifically a finned tube for use in heat pipe economizers. Background Technology

[0002] In the fields of industrial boilers and thermal power generation, heat pipe economizers are key equipment for improving energy efficiency by recovering waste heat from flue gas to preheat feedwater. Among them, finned tubes, as the core heat transfer element, must simultaneously meet the requirements of enhanced heat transfer and tolerance to complex flue gas environments.

[0003] In high-concentration dusty flue gas environments, spiral finned tubes, due to their small fin spacing and insufficient airflow disturbance, are prone to dust accumulation in the fin gaps, forming an insulating layer that significantly reduces heat transfer efficiency. Dust buildup and blockage alter the flue gas flow field distribution, causing abnormally high local wind speeds and accelerating fin wear. Simultaneously, in humid environments, accumulated dust easily combines with corrosive components in the flue gas to form acidic fouling, leading to corrosion and perforation of the finned tubes and shortening the equipment's service life. Therefore, we propose a finned tube for use in heat pipe economizers. Utility Model Content

[0004] The purpose of this invention is to provide a finned tube for a heat pipe economizer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a finned tube for a heat pipe economizer, comprising a finned tube body, and further comprising: A triggering component, the triggering component including a groove formed on the finned tube body, a sliding block slidably connected to the groove, two sliding blocks being provided, and a shape memory alloy wire connecting the two sliding blocks; The striking assembly includes a push rod disposed on the top of the finned tube body, and a hammer head is connected to the side of the push rod away from the shape memory alloy wire.

[0006] Furthermore, a limiting component is provided on the side of the finned tube body near the push rod. The limiting component includes a limiting groove formed on the finned tube body, and a sliding rod is slidably connected to the limiting groove. The sliding rod is connected to the push rod.

[0007] The above technical solution is adopted: by setting a limiting component, the trajectory of the hammer head during the movement is limited.

[0008] Furthermore, a protective assembly is provided inside the finned tube body. The protective assembly includes a baffle connected to the inner wall of the finned tube body, and a fixed shaft is connected to the baffle. The fixed shaft has an inclination angle of thirty degrees.

[0009] The above technical solution involves setting up protective components to reduce the air velocity inside the pipe and prevent wear on the inner wall of the pipe.

[0010] Furthermore, the finned tube body is provided with an outer shell, and a support leg is connected to the bottom of the outer shell.

[0011] The above technical solution involves installing an outer shell to protect the finned tube from corrosion.

[0012] Furthermore, an inclined plate is provided inside the outer shell, the inclined plate having an inclination angle of thirty degrees, and the side of the inclined plate closer to the opening and closing plate being lower.

[0013] The above technical solution involves setting up an inclined plate so that the dust after vibration slides towards the discharge port under the action of the inclined plate.

[0014] Furthermore, a dust removal assembly is provided at the bottom of the outer casing. The dust removal assembly includes a rotating shaft rotatably connected to the bottom of the outer casing, an opening and closing plate connected to the rotating shaft, a handle connected to the opening and closing plate, and a spring piece connected between the opening and closing plate and the bottom of the outer casing.

[0015] The above technical solution involves setting up a dust removal component to promptly remove internal dust particles, preventing their accumulation and reducing heat dissipation efficiency.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, a striking component is incorporated to remove dust adhering to the surface of the finned tube, effectively preventing the formation of an insulating layer from accumulated ash, maintaining stable heat transfer efficiency, ensuring full recovery of waste heat from flue gas, reducing energy waste, and solving the problem that in high-concentration dusty flue gas environments, the small fin spacing and insufficient airflow disturbance of spiral finned tubes easily lead to dust accumulation in the fin gaps, forming an insulating layer that significantly reduces heat transfer efficiency. Ash accumulation also alters the flue gas flow field distribution, causing abnormally high local wind speeds and accelerating fin wear. Furthermore, in humid environments, accumulated ash easily combines with corrosive components in the flue gas to form acidic fouling, causing corrosion and perforation of the finned tubes and shortening the equipment's service life. Attached Figure Description

[0017] Figure 1 This is a front view of a finned tube used in a heat pipe economizer.

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0019] Figure 3 This is a side view of a finned tube used in a heat pipe economizer.

[0020] Figure 4This is a diagram of the bottom structure of a finned tube used in a heat pipe economizer.

[0021] Figure 5 This is a split diagram of a finned tube used in a heat pipe economizer.

[0022] Numbering on the map: 1. Finned tube body; 2. Outer shell; 3. Triggering component; 31. Slide groove; 32. Sliding block; 33. Shape memory alloy wire; 4. Striking assembly; 41. Push rod; 42. Hammer head; 5. Limiting component; 51. Limiting groove; 52. Sliding rod; 6. Protective components; 61. Baffle; 62. Fixed shaft; 7. Ash discharge assembly; 71. Opening and closing plate; 72. Rotating shaft; 73. Handle; 74. Spring clip; 8. Inclined plate; 9. Supporting leg. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-5 As shown, this utility model provides a technical solution: a finned tube for a heat pipe economizer, comprising a finned tube body 1, and further comprising: Trigger component 3 includes a slide groove 31 formed on the finned tube body 1, a sliding block 32 slidably connected on the slide groove 31, two sliding blocks 32 are provided, and a shape memory alloy wire 33 is connected between the two sliding blocks 32. The striking assembly 4 includes a push rod 41 disposed on the top of the finned tube body 1, and a hammer head 42 is connected to the side of the push rod 41 away from the shape memory alloy wire 33. A limiting component 5 is provided on the side of the finned tube body 1 near the push rod 41. The limiting component 5 includes a limiting groove 51 opened on the finned tube body 1, and a sliding rod 52 is slidably connected to the limiting groove 51. The sliding rod 52 is connected to the push rod 41. Specifically, when too much dust accumulates on the finned tube, the heat dissipation efficiency of the finned tube will decrease, and the surface temperature will rise. When the shape memory alloy wire 33 senses the temperature rise, it will deform. During the deformation process, it will drive the sliding block 32 to slide in the sliding groove 31. Then, the shape memory alloy wire 33 will push the sliding rod 52 to slide in the limiting groove 51. The sliding rod 52 will drive the push rod 41 and the hammer head 42 connected to it to strike the finned tube to generate vibration and make the dust attached to it fall off.

[0025] Furthermore, such as Figure 1 As shown: A shell 2 is provided on the outside of the finned tube body 1, and a support leg 9 is connected to the bottom of the shell 2. By providing the shell 2, the outside of the finned tube is protected to prevent corrosion. The above solutions also include reducing the airflow velocity inside the duct to prevent excessive airflow from impacting and damaging the duct's inner walls. Figure 3 As shown: A protective component 6 is provided inside the finned tube body 1. The protective component 6 includes a baffle 61 connected to the inner wall of the finned tube body 1. A fixed shaft 62 is connected to the baffle 61. The tilt angle of the fixed shaft 62 is 30 degrees. By setting the protective component 6, the wind speed inside the tube is reduced, and wear on the inner wall of the tube is prevented. The above solutions also include the need to promptly remove dust that falls inside the outer casing 2 to prevent accumulation and reduced heat dissipation efficiency. Figure 4 and Figure 5 As shown: An inclined plate 8 is provided inside the outer casing 2. The inclined plate 8 has an inclination angle of 30 degrees. The side of the inclined plate 8 closer to the opening and closing plate 71 is lower. A dust discharge assembly 7 is provided at the bottom of the outer casing 2. The dust discharge assembly 7 includes a rotating shaft 72 rotatably connected to the bottom of the outer casing 2. The opening and closing plate 71 is connected to the rotating shaft 72. A handle 73 is connected to the opening and closing plate 71. A spring piece 74 is connected between the opening and closing plate 71 and the bottom of the outer casing 2. The falling dust will slide to the side of the opening and closing plate 71 through the inclined plate 8. Then, the handle 73 is pulled to rotate the opening and closing plate 71 through the rotating shaft 72 to open and discharge the dust. Then, the handle 73 is released and the opening and closing plate 71 automatically springs back to its original position through the spring piece 74. The working principle provided by this utility model is as follows: Figures 1-5As shown: When too much dust accumulates on the finned tube, the heat dissipation efficiency of the finned tube will decrease, and the surface temperature will rise. When the shape memory alloy wire 33 senses the temperature rise, it will deform. During the deformation process, it will drive the sliding block 32 to slide in the sliding groove 31. Then the shape memory alloy wire 33 will push the sliding rod 52 to slide in the limiting groove 51. The sliding rod 52 will drive the push rod 41 and the hammer head 42 connected to it to knock on the finned tube to generate vibration, causing the dust attached to it to fall off. The fallen dust will slide to the side of the opening and closing plate 71 through the inclined plate 8. Then, pull the handle 73 to rotate the opening and closing plate 71 through the rotating shaft 72 to open and discharge the dust. Then release the handle 73 and the opening and closing plate 71 will automatically spring back to its original position through the spring piece 74.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A finned tube for use in a heat pipe type economizer, comprising a finned tube body (1), characterized in that, Also includes: Trigger component (3), the trigger component (3) includes a groove (31) formed on the finned tube body (1), a sliding block (32) is slidably connected on the groove (31), two sliding blocks (32) are provided, and a shape memory alloy wire (33) is connected between the two sliding blocks (32). The striking assembly (4) includes a push rod (41) disposed on the top of the finned tube body (1), and a hammer (42) is connected to the side of the push rod (41) away from the shape memory alloy wire (33).

2. A finned tube for use in a heat pipe economizer as defined in claim 1, wherein: A limiting component (5) is provided on the side of the finned tube body (1) near the push rod (41). The limiting component (5) includes a limiting groove (51) opened on the finned tube body (1). A sliding rod (52) is slidably connected to the limiting groove (51). The sliding rod (52) is connected to the push rod (41).

3. A finned tube for use in a heat pipe economizer as defined in claim 1, wherein: The finned tube body (1) is provided with a protective component (6). The protective component (6) includes a baffle (61) connected to the inner wall of the finned tube body (1). A fixed shaft (62) is connected to the baffle (61). The inclination angle of the fixed shaft (62) is thirty degrees.

4. A finned tube for use in a heat pipe economizer as defined in claim 1, wherein: The finned tube body (1) is provided with an outer shell (2) on the outside, and a support leg (9) is connected to the bottom of the outer shell (2).

5. A finned tube for use in a heat pipe economizer as defined in claim 4 wherein: An inclined plate (8) is provided inside the outer shell (2), the inclined plate (8) has an inclination angle of thirty degrees, and the side of the inclined plate (8) closer to the opening and closing plate (71) is lower.

6. A finned tube for use in a heat pipe economizer as defined in claim 4 wherein: The bottom of the outer shell (2) is provided with a dust removal component (7). The dust removal component (7) includes a rotating shaft (72) rotatably connected to the bottom of the outer shell (2). A hinge plate (71) is connected to the rotating shaft (72). A handle (73) is connected to the hinge plate (71). A spring piece (74) is connected between the hinge plate (71) and the bottom of the outer shell (2).

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