Smoke tube heat insulation structure

Abstract

The utility model discloses a smoke pipe heat insulation structure, which relates to the technical field of smoke pipe heat insulation and comprises a heat preservation smoke pipe, a fixing mechanism is arranged at the top end of the heat preservation smoke pipe, and a smoke exhaust adjusting mechanism is arranged at the top end of the fixing mechanism. The calcium silicate board with the thickness of 120 mm is laid on the surface of the inner pipeline, then the refractory castable with the thickness of 80 mm is poured on the surface of the calcium silicate board, and the Y-shaped anchoring nails laid on the surface of the inner pipeline are used for knotting and heat preservation of the calcium silicate board and the refractory castable, so that the refractory castable is prevented from being separated from the calcium silicate board; and meanwhile, when flue gas passes through the inner pipeline, the refractory castable and the calcium silicate plate conduct and preserve the temperature of the flue gas, the temperature of the flue gas at the inlet of the waste heat boiler is increased, then the generating capacity is increased, and the adaptability of the structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue pipe heat insulation, in particular to a flue pipe heat insulation structure. Background Technique

[0002] The flue gas volume of industrial silicon smelting is about 120,000 - 150,000 Nm³ / h, and the flue gas temperature is about 460 - 580 °C. It is a valuable energy source. Industrial silicon production enterprises recover waste heat for power generation. The flue gas generated by the industrial silicon submerged arc furnace enters the waste heat boiler through the flue, is converted into high-temperature steam, and then is used for power generation by the generator set. Because the flue gas temperature is high, when the flue gas passes through the flue, the high temperature makes the flue pipe turn red and deform. Therefore, the flue of the industrial silicon submerged arc furnace is designed as a water-cooled flue pipe. Although this design can reduce the flue gas temperature and the thermal deformation of the flue is small, the water cooling causes serious heat loss of the flue gas. The flue gas temperature drops by about 30 °C, the thermal utilization rate is low, and the waste heat power generation is insufficient.

[0003] The existing flue pipe heat insulation structure has the following deficiencies:

[0004] 1. It mainly uses water-cooled flue pipes, resulting in serious heat loss of the flue gas and unable to make full use of the heat in the flue gas.

[0005] 2. The flue pipe cannot control the flue gas flow rate, which may cause the flue gas flow rate to be too fast, making it impossible to make full use of the heat energy. Content of the Utility Model

[0006] The purpose of the utility model is to provide a flue pipe heat insulation structure to solve the problems raised in the above background technique.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A flue pipe heat insulation structure includes a heat-insulating flue pipe. A fixing mechanism is arranged at the top end of the heat-insulating flue pipe, and a smoke exhaust adjusting mechanism is arranged at the top end of the fixing mechanism. The heat-insulating flue pipe includes an inner pipe, the inner pipe is fixedly installed at the bottom end of the fixing mechanism, Y-shaped anchor bolts are fixedly installed on the surface of the inner pipe, the Y-shaped anchor bolts are evenly distributed on the surface of the inner pipe, refractory castable is fixedly installed on the surface of the Y-shaped anchor bolts, and calcium silicate board is fixedly installed on the surface of the refractory castable.

[0009] The further improvement of the technical solution of the utility model lies in that: the fixing mechanism includes a base, the base is fixedly installed at the top end of the heat-insulating flue pipe, an upper support seat is movably installed on the surface of the base, transverse grooves and vertical grooves are arranged on the surface of the upper support seat, the vertical grooves completely penetrate the upper support seat, and the height value of the transverse grooves is less than the height value of the vertical grooves.

[0010] A further improvement of the technical solution of the present utility model lies in that: the fixing mechanism further includes a limiting plate, the limiting plate is fixedly installed inside the base, an adjusting rod is movably installed inside the limiting plate, bumps are arranged on the surface of the adjusting rod, a limiting block is fixedly installed at one end of the adjusting rod, and a spring is movably installed on the surface of the adjusting rod.

[0011] A further improvement of the technical solution of the present utility model lies in that: a fixing block is fixedly installed on the surface of the adjusting rod, the fixing block is adapted to the groove of the upper support seat, and a pull ring is fixedly installed on the surface of the fixing block.

[0012] A further improvement of the technical solution of the present utility model lies in that: the smoke exhaust adjusting mechanism includes a support column, the support column is fixedly installed on the surface of the upper support seat, and a top cover is fixedly installed at the top of the support column.

[0013] A further improvement of the technical solution of the present utility model lies in that: the smoke exhaust adjusting mechanism further includes a support plate, the support plate is fixedly installed inside the base, and a large particle filter plate is movably installed on the surface of the support plate.

[0014] A further improvement of the technical solution of the present utility model lies in that: the smoke exhaust adjusting mechanism further includes an inner baffle, the inner baffle is fixedly installed on the surface of the upper support seat, ventilation openings are evenly distributed on the surface of the inner baffle, an adjusting block is fixedly installed at the top of the inner baffle, a chute is arranged inside the adjusting block, an outer baffle is rotatably connected to the surface of the adjusting block, the outer baffle is adapted to the chute inside the adjusting block, ventilation openings are evenly distributed on the surface of the outer baffle, and the ventilation openings of the outer baffle are adapted to the ventilation openings of the inner baffle.

[0015] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0016] 1. The present utility model provides a smoke pipe heat insulation structure, which adopts the cooperation of an inner pipe, refractory castable, calcium silicate board, and Y-shaped anchor bolts. By laying a calcium silicate board with a thickness of 120 mm on the surface of the inner pipe, and then casting a refractory castable with a thickness of 80 mm on the surface of the calcium silicate board, the Y-shaped anchor bolts laid on the surface of the inner pipe are used to knot and insulate the calcium silicate board and the refractory castable, preventing the refractory castable and the calcium silicate board from detaching, which has the functions of strengthening the strength of the structure and extending the service life of the structure. When the flue gas passes through the inner pipe, the refractory castable and the calcium silicate board conduct and insulate the temperature of the flue gas, increasing the temperature of the flue gas at the inlet of the waste heat boiler, thereby increasing the power generation, and improving the adaptability of the structure.

[0017] 2. The present utility model provides a heat insulation structure for a smoke pipe, which adopts the cooperation of a smoke exhaust adjustment mechanism, a top cover, support columns, a support plate, a large particle filter plate, an adjustment block, an inner baffle, and an outer baffle. The large particle filter plate is supported by the support plate to filter the dust in the flue gas. At the same time, the inner baffle on the surface of the upper support seat fixes the adjustment block, and the outer baffle rotates on the chute inside the adjustment block. By rotating the outer baffle, the width of the ventilation opening on the surface of the outer baffle and the inner baffle can be adjusted, so that the exhaust flow rate of the flue gas can be controlled. When the flue gas flow rate is small, the width of the ventilation opening is narrowed, so that the flue gas stays in the pipeline for a longer time, which can not only filter the dust in the flue gas more fully, but also make the temperature conducted to the heat preservation smoke pipe more sufficient. When the flue gas flow rate is large, the width of the ventilation opening is adjusted to make the flue gas flow quickly and prevent the flue gas from flowing back. At the same time, the top cover supported by the support column blocks the top of the heat preservation smoke pipe to prevent rainwater from falling into the heat preservation smoke pipe, improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a structural schematic diagram of a cross-sectional view of the heat preservation smoke pipe of the present utility model;

[0020] Figure 3 is a structural schematic diagram of the top cover of the present utility model;

[0021] Figure 4 is a structural schematic diagram of the smoke exhaust adjustment mechanism of the present utility model;

[0022] Figure 5 is a structural schematic diagram of the fixing mechanism of the present utility model.

[0023] In the figure: 1. Heat preservation smoke pipe; 11. Inner pipeline; 12. Refractory castable; 13. Calcium silicate board; 14. Y-shaped anchor bolt; 2. Fixing mechanism; 21. Base; 22. Limiting plate; 23. Limiting block; 24. Adjusting rod; 25. Spring; 26. Upper support seat; 27. Fixing block; 28. Pulling ring; 3. Smoke exhaust adjustment mechanism; 31. Top cover; 32. Support column; 33. Support plate; 34. Large particle filter plate; 35. Adjustment block; 36. Inner baffle; 37. Outer baffle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes the present utility model in detail with reference to the embodiments:

[0025] Embodiment 1

[0026] As Figures 1-5As shown in the figure, the present utility model provides a heat insulation structure for a smoke pipe, including a heat-insulating smoke pipe 1. A fixing mechanism 2 is provided at the top end of the heat-insulating smoke pipe 1. A smoke exhaust adjusting mechanism 3 is provided at the top end of the fixing mechanism 2. The heat-insulating smoke pipe 1 includes an inner pipe 11. The inner pipe 11 is fixedly installed at the bottom end of the fixing mechanism 2. Y-shaped anchor nails 14 are fixedly installed on the surface of the inner pipe 11. The Y-shaped anchor nails 14 are evenly distributed on the surface of the inner pipe 11. A refractory castable 12 is fixedly installed on the surface of the Y-shaped anchor nails 14. A calcium silicate board 13 is fixedly installed on the surface of the refractory castable 12.

[0027] In this embodiment, by laying a calcium silicate board 13 with a thickness of 120 mm on the surface of the inner pipe 11, and then pouring a refractory castable 12 with a thickness of 80 mm on the surface of the calcium silicate board 13, the Y-shaped anchor nails 14 laid on the surface of the inner pipe 11 are used to knot and insulate the calcium silicate board 13 and the refractory castable 12, preventing the refractory castable 12 from separating from the calcium silicate board 13. It has the effect of strengthening the strength of the structure and extending the service life of the structure. When the flue gas passes through the inner pipe 11, the refractory castable 12 and the calcium silicate board 13 conduct and insulate the temperature of the flue gas, increasing the temperature of the flue gas at the inlet of the waste heat boiler, thereby increasing the power generation, and improving the adaptability of the structure.

[0028] Embodiment 2

[0029] As Figures 1-5 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the fixing mechanism 2 includes a base 21. The base 21 is fixedly installed at the top end of the heat-insulating smoke pipe 1. An upper support seat 26 is movably installed on the surface of the base 21. Horizontal grooves and vertical grooves are provided on the surface of the upper support seat 26. The vertical groove completely penetrates the upper support seat 26. The height value of the horizontal groove is less than the height value of the vertical groove. The fixing mechanism 2 further includes a limiting plate 22. The limiting plate 22 is fixedly installed inside the base 21. An adjusting rod 24 is movably installed inside the limiting plate 22. A convex block is provided on the surface of the adjusting rod 24. A limiting block 23 is fixedly installed at one end of the adjusting rod 24. A spring 25 is movably installed on the surface of the adjusting rod 24. A fixing block 27 is fixedly installed on the surface of the adjusting rod 24. The fixing block 27 is adapted to the groove of the upper support seat 26. A pull ring 28 is fixedly installed on the surface of the fixing block 27.

[0030] In this embodiment, by placing the upper support base 26 on the surface of the base 21 and aligning the fixing block 27 with the vertical groove of the upper support base 26, pulling the pull ring 28 causes the fixing block 27 to lift upward and the bottom end of the fixing block 27 to be higher than the surface of the upper support base 26. At the same time, the convex block on the surface of the adjusting rod 24 compresses to contract the spring 25, and the limiting block 23 and the limiting plate 22 cooperate to limit the position of the adjusting rod 24. Rotating the pull ring 28 causes the fixing block 27 to rotate from the vertical groove to the horizontal groove, and the adjusting rod 24 rebounds to fix the fixing block 27. When it is necessary to disassemble and replace the smoke exhaust adjusting mechanism 3, pull the pull ring 28 to make the fixing block 27 lift upward and the bottom end of the fixing block 27 to be higher than the surface of the upper support base 26. Rotate the pull ring 28, and the fixing block 27 rotates from the horizontal groove to the vertical groove, and the upper support base 26 can be separated from the base 21, enabling the rapid disassembly of the smoke exhaust adjusting mechanism 3 and improving the stability of the device.

[0031] Embodiment 3

[0032] As Figures 1-5 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the smoke exhaust adjusting mechanism 3 includes a support column 32, the support column 32 is fixedly installed on the surface of the upper support base 26, the top end of the support column 32 is fixedly installed with a top cover 31, the smoke exhaust adjusting mechanism 3 further includes a support plate 33, the support plate 33 is fixedly installed inside the base 21, a large particle filter plate 34 is movably installed on the surface of the support plate 33, the smoke exhaust adjusting mechanism 3 further includes an inner baffle 36, the inner baffle 36 is fixedly installed on the surface of the upper support base 26, ventilation openings are evenly distributed on the surface of the inner baffle 36, an adjusting block 35 is fixedly installed at the top end of the inner baffle 36, a chute is provided inside the adjusting block 35, an outer baffle 37 is rotatably connected to the surface of the adjusting block 35, the outer baffle 37 is adapted to the chute inside the adjusting block 35, ventilation openings are evenly distributed on the surface of the outer baffle 37, and the ventilation openings on the outer baffle 37 are adapted to the ventilation openings on the inner baffle 36.

[0033] In this embodiment, the large particle filter plate 34 is supported by the support plate 33, and the large particle filter plate 34 filters the dust in the flue gas. At the same time, the inner baffle 36 on the surface of the upper support base 26 fixes the adjusting block 35, and the outer baffle 37 rotates on the chute inside the adjusting block 35. By rotating the outer baffle 37, the width of the ventilation openings on the surfaces of the outer baffle 37 and the inner baffle 36 can be adjusted, so that the flow rate of the flue gas discharged can be controlled. When the flue gas flow rate is small, the width of the ventilation openings is narrowed, so that the flue gas stays in the pipeline for a longer time, which can not only filter the dust in the flue gas more fully, but also make the temperature of the flue gas conducted to the heat preservation smoke pipe 1 more sufficient. When the flue gas flow rate is large, the width of the ventilation openings is adjusted to enable the rapid flow of the flue gas and prevent the flue gas from flowing back. At the same time, the top cover 31 supported by the support column 32 blocks the top of the heat preservation smoke pipe 1 to prevent rainwater from falling into the heat preservation smoke pipe 1, improving the adaptability of the device.

[0034] The working principle of the flue pipe heat insulation structure will be specifically described below.

[0035] As Figures 1-5 shown, by placing the upper support base 26 on the surface of the base 21 and aligning the fixing block 27 with the vertical groove of the upper support base 26, pulling the pull ring 28 causes the fixing block 27 to lift upward and the bottom end of the fixing block 27 to be higher than the surface of the upper support base 26. At the same time, the convex block on the surface of the adjusting rod 24 compresses the spring 25 to contract, and the limit block 23 and the limit plate 22 cooperate to limit the position of the adjusting rod 24. Rotating the pull ring 28 causes the fixing block 27 to rotate from the vertical groove to the horizontal groove, and the adjusting rod 24 rebounds to fix the fixing block 27. At the same time, a calcium silicate board 13 with a thickness of 120 mm is laid on the surface of the inner pipe 11, and a refractory casting material 12 with a thickness of 80 mm is poured on the surface of the calcium silicate board 13. The Y-shaped anchor nails 14 laid on the surface of the inner pipe 11 are used to knot and insulate the calcium silicate board 13 and the refractory casting material 12 to prevent the refractory casting material 12 from separating from the calcium silicate board 13, which has the effect of strengthening the strength of the structure and extending the service life of the structure. When the flue gas passes through the inner pipe 11, the refractory casting material 12 and the calcium silicate board 13 conduct and insulate the temperature of the flue gas, increase the temperature of the flue gas at the inlet of the waste heat boiler, and thus increase the power generation, improving the adaptability of the structure. When the flue gas passes through the inner pipe 11 and reaches the smoke exhaust adjusting mechanism 3, the support plate 33 supports the large particle filter plate 34, and the large particle filter plate 34 filters the dust in the flue gas. At the same time, the inner baffle 36 on the surface of the upper support base 26 fixes the adjusting block 35, and the outer baffle 37 rotates on the sliding groove inside the adjusting block 35. By rotating the outer baffle 37, the width of the ventilation opening on the surfaces of the outer baffle 37 and the inner baffle 36 can be adjusted, so that the exhaust flow rate of the flue gas can be controlled. When the flue gas flow rate is small, the width of the ventilation opening is narrowed, so that the flue gas stays in the pipe longer, which can not only filter the dust in the flue gas more fully, but also make the temperature conducted by the flue gas to the heat insulation flue pipe 1 more sufficient. When the flue gas flow rate is large, the width of the ventilation opening is adjusted to make the flue gas flow quickly and prevent the flue gas from flowing back. At the same time, the top cover 31 supported by the support column 32 blocks the top of the heat insulation flue pipe 1 to prevent rainwater from falling into the heat insulation flue pipe 1. When it is necessary to disassemble and replace the smoke exhaust adjusting mechanism 3, pull the pull ring 28 to make the fixing block 27 lift upward and the bottom end of the fixing block 27 higher than the surface of the upper support base 26, and rotate the pull ring 28. The fixing block 27 rotates from the horizontal groove to the vertical groove, and the upper support base 26 can be separated from the base 21, so that the smoke exhaust adjusting mechanism 3 can be quickly disassembled, improving the stability of the device.

[0036] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made to it, which are obvious to those of ordinary skill in the art. Therefore, any modifications or improvements made without departing from the spirit and concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A smoke pipe insulation structure, comprising a heat-insulating smoke pipe (1), characterized in that: The top end of the heat-insulating smoke pipe (1) is provided with a fixing mechanism (2), and the top end of the fixing mechanism (2) is provided with a smoke exhaust adjustment mechanism (3); The heat-insulating smoke pipe (1) comprises an inner pipe (11), the inner pipe (11) is fixedly mounted on the bottom end of a fixing mechanism (2), a Y-shaped anchor nail (14) is fixedly mounted on the surface of the inner pipe (11), the Y-shaped anchor nail (14) is evenly distributed on the surface of the inner pipe (11), a refractory casting material (12) is fixedly mounted on the surface of the Y-shaped anchor nail (14), and a calcium silicate board (13) is fixedly mounted on the surface of the refractory casting material (12).

2. A smoke pipe insulation structure according to claim 1, characterized in that: The fixing mechanism (2) comprises a base (21), the base (21) is fixedly mounted on the top of the heat-insulating smoke pipe (1), an upper support seat (26) is movably mounted on the surface of the base (21), a transverse groove and a vertical groove are arranged on the surface of the upper support seat (26), the vertical groove completely penetrates the upper support seat (26), and the height value of the transverse groove is smaller than the height value of the vertical groove.

3. A smoke pipe insulation structure according to claim 2, characterized in that: The fixing mechanism (2) further comprises a limit plate (22), the limit plate (22) being fixedly mounted inside the base (21), an adjusting rod (24) being movably mounted inside the limit plate (22), a protrusion being provided on the surface of the adjusting rod (24), a limit block (23) being fixedly mounted on one end of the adjusting rod (24), and a spring (25) being movably mounted on the surface of the adjusting rod (24).

4. A smoke pipe insulation structure according to claim 3, characterized in that: A fixing block (27) is fixedly mounted on the surface of the adjusting rod (24), the fixing block (27) is matched with the groove of the upper supporting seat (26), and a pull ring (28) is fixedly mounted on the surface of the fixing block (27).

5. A smoke pipe insulation structure according to claim 4, characterized in that: The smoke exhaust adjustment mechanism (3) comprises a support column (32), wherein the support column (32) is fixedly mounted on the surface of an upper support seat (26), and a top cover (31) is fixedly mounted on the top end of the support column (32).

6. A smoke pipe insulation structure according to claim 5, characterized in that: The smoke exhaust adjustment mechanism (3) further comprises a support plate (33), wherein the support plate (33) is fixedly mounted inside the base (21), and a large particle filter plate (34) is movably mounted on the surface of the support plate (33).

7. A smoke pipe insulation structure according to claim 6, characterized in that: The smoke exhaust adjustment mechanism (3) also includes an inner baffle (36), the inner baffle (36) is fixedly mounted on the surface of the upper support seat (26), the surface of the inner baffle (36) is evenly distributed with ventilation holes, an adjustment block (35) is fixedly mounted on the top of the inner baffle (36), a slide groove is arranged inside the adjustment block (35), the surface of the adjustment block (35) is rotatably connected with an outer baffle (37), the outer baffle (37) is matched with the slide groove inside the adjustment block (35), the surface of the outer baffle (37) is evenly distributed with ventilation holes, and the ventilation holes of the outer baffle (37) are matched with the ventilation holes of the inner baffle (36).

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