Evaporation furnace tube structure of steam generator

Abstract

The utility model relates to the technical field of steam generators, in particular to an evaporation furnace tube structure of a steam generator, which comprises an inner furnace tube, an outer protection mechanism is sleeved on the outer side of the inner furnace tube, the outer protection mechanism comprises two groups of anti-abrasion tiles sleeved on the outer side wall of the inner furnace tube, and the two groups of anti-abrasion tiles are mutually welded. The outer side of the anti-abrasion tile is fixedly connected with four sets of movable installation grooves, reinforcing ribs are arranged in the movable installation grooves and arranged on the outer side of the inner furnace tube, the length of the reinforcing ribs is smaller than that of the movable installation grooves, and containing grooves are formed in the anti-abrasion tile and filled with heat insulation ceramic. The inner furnace tube is matched with the outer protection mechanism, the movable installation grooves are matched with the reinforcing ribs to achieve installation of the anti-abrasion tiles, the outer protection mechanism is fixed through welding, and the length difference between the movable installation grooves and the reinforcing ribs is utilized to guarantee attachment and provide a moving space at the same time. Therefore, the protective sleeve is prevented from cracking due to high-temperature deformation, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of steam generators, and particularly relates to an evaporation furnace tube structure of a steam generator. Background Art

[0002] Under the call of national energy conservation and emission reduction, steam generating equipment is accelerating towards high-efficiency and low-emission fully premixed condensing type. Especially the inspection-free / declaration-free cross-flow gas steam generator, which has a faster steam production speed than traditional steam boilers, is more energy-saving and environmentally friendly, and does not require inspection installation and boiler annual review. It is widely favored by the market and is widely used in national production and life, such as hotels, guesthouses, food processing, textiles, chemical industry, feed processing and other industries.

[0003] After retrieval, the patent document with the publication number CN217978748U proposes a steam generator: This application discloses an inspection-free steam generating device, wherein, a steam generating device includes: a first heat exchange component defining a first flue gas flow path and a steam generating flow path; the water in the steam generating flow path exchanges heat with the flue gas in the first flue gas flow path to form steam; the first heat exchange component has a body water inlet end for inputting water and a flue gas output end for outputting flue gas; a second heat exchange component defining a second flue gas flow path and a preheating flow path; the second flue gas flow path is communicated with the downstream of the first flue gas flow path; the water in the preheating flow path exchanges heat with the flue gas in the second flue gas flow path to be heated; the preheating flow path has a first water inlet end and a first water outlet end; a first water pump communicated with the upstream of the first water inlet end; the head of the first water pump is configured to be greater than the water resistance of the second heat exchange component; a second water pump communicated between the first water outlet end and the body water inlet end and having a head greater than that of the first water pump.

[0004] In the process of using the above technical solution, due to structural reasons, the total length dimension of the furnace tube is not allowed to change. Therefore, the heat generated during the operation of the furnace tube will cause the furnace tube to deform. Therefore, heat-insulating ceramics will be used. Due to processing technology problems, multiple sections of ceramic heat-insulating layers are required on the pipeline. Once there is collision or extrusion between the ceramic heat-insulating layers, not only are they easily broken by themselves, but also the anti-abrasion protection mechanism sleeved outside the furnace tube is easily cracked.

[0005] Therefore, it is very necessary to invent an evaporation furnace tube structure of a steam generator to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an evaporation furnace tube structure of a steam generator, which solves the problem that when there is collision or extrusion between ceramic heat-insulating layers in the prior art, not only are they easily broken by themselves, but also the anti-abrasion protection mechanism sleeved outside the furnace tube is easily cracked through the cooperation of the inner furnace tube and the outer protection mechanism.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An evaporation furnace tube structure of a steam generator, including an inner furnace tube, an outer protection mechanism is sleeved outside the inner furnace tube, the outer protection mechanism includes two wear-resistant tiles sleeved on the outer side wall of the inner furnace tube, the two wear-resistant tiles are welded to each other, four movable mounting grooves are fixedly connected to the outer side of the wear-resistant tile, the inside of the movable mounting groove includes reinforcing ribs and the reinforcing ribs are arranged outside the inner furnace tube, the length of the reinforcing rib is less than that of the movable mounting groove, a receiving groove is formed inside the wear-resistant tile and heat-insulating ceramics are filled in the receiving groove, a protective sleeve is fixedly connected to the inner side wall of the wear-resistant tile and friction lines are engraved on the inner side wall of the protective sleeve, and the cooperation of the movable mounting groove and the reinforcing rib is used to reduce the wear of the windward surface of the inner furnace tube, and the cooperation of the protective sleeve and the heat-insulating ceramics is used to improve the heat preservation and protection effects on the inner furnace tube.

[0008] Preferably, a mounting base is fixedly connected to the bottom end of the inner furnace tube, and a mounting seat is arranged on one side of the inner furnace tube. The inner furnace tube is installed on the furnace body through the mounting base.

[0009] Preferably, a fixing rod is fixedly connected to the side of the mounting seat close to the inner furnace tube, and a U-shaped groove is fixedly connected to the end of the fixing rod away from the inner furnace tube. Subsequent parts are installed by using the U-shaped groove.

[0010] Preferably, a mounting shaft is fixedly connected to the inside of the U-shaped groove, a contact wheel is rotatably connected to the outer side wall of the mounting shaft, and the side of the contact wheel close to the inner furnace tube abuts against the outer protection mechanism. The inner furnace tube is further prevented from deforming and expanding by the way that the contact wheel abuts against the outer protection mechanism.

[0011] Preferably, a lining is fixedly connected to the outer side wall of the inner furnace tube, a heat-insulating cushion layer is fixedly connected to the outer side wall of the lining, and an outer lining is fixedly connected to the outer side wall of the heat-insulating cushion layer. The cooperation of the lining and the outer lining is used to initially prevent the inner furnace tube from expanding.

[0012] Preferably, a fixing shell is fixedly connected to the outer side wall of the outer lining, and the reinforcing rib is fixedly connected to the outer side wall of the fixing shell. The cooperation of the fixing shell and the outer protection mechanism is used to further prevent the inner furnace tube from expanding.

[0013] In the above technical solutions, the technical effects and advantages provided by the present utility model are:

[0014] Through the cooperation of the inner furnace tube and the outer protection mechanism, the installation of the wear-resistant tile is achieved by the cooperation of the movable installation groove and the reinforcing rib, and the fixation of the outer protection mechanism is realized by welding. When the outer protection mechanism is sleeved outside the inner furnace tube, the friction lines inside the protective sleeve are used to improve the tightness between the inner furnace tube and the outer protection mechanism, and the wear-resistant tile is used to prevent the external wear of the pipeline. At the same time, the length difference between the movable installation groove and the reinforcing rib provides a movable space while ensuring fitting, and the heat-insulating ceramic provides buffering to prevent the protective sleeve from cracking due to high-temperature deformation, thereby improving the service life of the inner furnace tube;

[0015] Through the cooperation of the inner lining, the heat-insulating cushion layer, the outer lining and the fixed housing, due to the elasticity of the inner lining and the outer lining, when the inner furnace tube deforms and presses the heat-insulating cushion layer in the overheated state, buffering is provided, thereby slowing down the pressure on the heat-insulating cushion layer and preventing it from cracking and expanding and deforming. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the abutting wheel of the present utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the outer protection mechanism of the present utility model;

[0020] Figure 4 For the present utility model Figure 3 It is an enlarged schematic diagram of part A in the present utility model;

[0021] Figure 5 It is a schematic diagram of the internal structure of the inner furnace tube of the present utility model.

[0022] Description of the Reference Numerals in the Drawings:

[0023] 1. Inner furnace tube; 2. Outer protection mechanism; 201. Wear-resistant tile; 202. Movable installation groove; 203. Protective sleeve; 204. Reinforcing rib; 205. Heat-insulating ceramic; 206. Accommodating groove; 3. Installation base; 4. U-shaped groove; 5. Fixed rod; 6. Mounting seat; 7. Abutting wheel; 8. Mounting shaft; 9. Inner lining; 10. Heat-insulating cushion layer; 11. Outer lining; 12. Fixed housing. Detailed Embodiments

[0024] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] The present utility model provides an evaporation furnace tube structure of a steam generator as shown in Figures 1 - 5 which includes an inner furnace tube 1. An outer protection mechanism 2 is sleeved outside the inner furnace tube 1. The outer protection mechanism 2 includes two groups of anti-wear tiles 201 sleeved on the outer side wall of the inner furnace tube 1. The two groups of anti-wear tiles 201 are welded to each other to realize the installation of the outer protection mechanism 2. Four groups of movable installation grooves 202 are fixedly connected to the outer side of the anti-wear tile 201. The inside of the movable installation groove 202 includes reinforcing ribs 204 and the reinforcing ribs 204 are arranged outside the inner furnace tube 1. The structure of the inner furnace tube 1 is strengthened by the reinforcing ribs 204. The length of the reinforcing ribs 204 is less than that of the movable installation groove 202, and the movable installation groove 202 provides a movable space for the reinforcing ribs 204. A receiving groove 206 is opened inside the anti-wear tile 201 and heat-insulating ceramics 205 are filled in the receiving groove 206. A protective sleeve 203 is fixedly connected to the inner side wall of the anti-wear tile 201 and friction lines are engraved on the inner side wall of the protective sleeve 203. The cooperation of the movable installation groove 202 and the reinforcing ribs 204 is used to reduce the wear of the windward surface of the inner furnace tube 1, and the cooperation of the protective sleeve 203 and the heat-insulating ceramics 205 is used to improve the heat preservation and protection effects on the inner furnace tube 1. An installation base 3 is fixedly connected to the bottom end of the inner furnace tube 1. An installation seat 6 is arranged on one side of the inner furnace tube 1. The installation seat 6 can be installed on the surface of a wall or other fixed objects. The installation of the inner furnace tube 1 and the furnace body is realized through the installation base 3. A fixing rod 5 is fixedly connected to the side of the installation seat 6 close to the inner furnace tube 1. One end of the fixing rod 5 far from the inner furnace tube 1 is fixedly connected to a U-shaped groove 4. Subsequent parts are installed by using the U-shaped groove 4. An installation shaft 8 is fixedly connected to the inside of the U-shaped groove 4. A contact wheel 7 is rotatably connected to the outer side wall of the installation shaft 8. The side of the contact wheel 7 close to the inner furnace tube 1 abuts against the outer protection mechanism 2. The deformation and expansion of the inner furnace tube 1 are further prevented by the way that the contact wheel 7 abuts against the outer protection mechanism 2. Through the cooperation of the inner furnace tube 1 and the outer protection mechanism 2, the installation of the anti-wear tile 201 is realized by the cooperation of the movable installation groove 202 and the reinforcing ribs 204, and the fixation of the outer protection mechanism 2 is realized by welding. When the outer protection mechanism 2 is sleeved outside the inner furnace tube 1, the friction lines inside the protective sleeve 203 are used to improve the tightness between the inner furnace tube 1 and the outer protection mechanism 2, and the anti-wear tile 201 is used to prevent the external wear of the pipeline. At the same time, the length difference between the movable installation groove 202 and the reinforcing ribs 204 provides a movable space while ensuring the fit, and a buffer is provided by the heat-insulating ceramics 205 to prevent the protective sleeve 203 from cracking due to high-temperature deformation.

[0026] Refer to the attached drawings of the specification Figures 1 - 5, a lining 9 is fixedly connected to the outer side wall of the inner furnace tube 1, a heat insulation cushion layer 10 is fixedly connected to the outer side wall of the lining 9, an outer lining 11 is fixedly connected to the outer side wall of the heat insulation cushion layer 10, the cooperation of the lining 9 and the outer lining 11 is used to initially prevent the expansion of the inner furnace tube 1, a fixed outer shell 12 is fixedly connected to the outer side wall of the outer lining 11, and a reinforcing rib 204 is fixedly connected to the outer side wall of the fixed outer shell 12. The cooperation of the fixed outer shell 12 and the outer protection mechanism 2 is used to further prevent the expansion of the inner furnace tube 1. Through the cooperation of the lining 9, the heat insulation cushion layer 10, the outer lining 11 and the fixed outer shell 12, and through the elasticity of the lining 9 and the outer lining 11, when the inner furnace tube 1 deforms and presses the heat insulation cushion layer 10 in an overheated state, a buffer is provided, thereby slowing down the pressure on the heat insulation cushion layer 10 and preventing it from cracking and expanding and deforming.

[0027] The working principle of this utility model:

[0028] Refer to the attached instructions Figures 1 - 5 , when the inner furnace tube 1 is working, it is heated inside, and the heat insulation cushion layer 10 is used to keep it warm. When the inner furnace tube 1 expands due to heat, through the elasticity of the lining 9 and the outer lining 11, a buffer is provided when the inner furnace tube 1 deforms and presses the heat insulation cushion layer 10 in an overheated state, thereby slowing down the pressure on the heat insulation cushion layer 10 and preventing it from cracking and expanding and deforming. And on the outer side of the inner furnace tube 1, the installation of the wear-resistant tile 201 is realized by the cooperation of the movable installation groove 202 and the reinforcing rib 204, and the fixation of the outer protection mechanism 2 is realized by welding. When the outer protection mechanism 2 is sleeved on the outer side of the inner furnace tube 1, the friction lines inside the protective sleeve 203 are used to improve the tightness between the inner furnace tube 1 and the outer protection mechanism 2, and the wear-resistant tile 201 is used to prevent the external wear on the pipeline. At the same time, the length difference between the movable installation groove 202 and the reinforcing rib 204 is used to provide a movable space while ensuring fitting, and the heat insulation ceramic 205 is used to provide a buffer to prevent the protective sleeve 203 from cracking due to high-temperature deformation. Finally, multiple protections for the inner furnace tube 1 are realized to improve the service life of the inner furnace tube 1.

[0029] Only some exemplary embodiments of the present utility model have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims

1. An evaporation furnace tube structure of a steam generator, comprising an inner furnace tube (1), characterized in that: The outer side of the inner furnace tube (1) is provided with an outer protection mechanism (2), the outer protection mechanism (2) comprising two groups of anti-wear tiles (201) sleeved on the outer side wall of the inner furnace tube (1), the two groups of anti-wear tiles (201) being welded to each other, the outer side of the anti-wear tiles (201) being fixedly connected with four groups of movable installation grooves (202), the inside of the movable installation grooves (202) comprising reinforcing ribs (204) and the reinforcing ribs (204) being arranged on the outer side of the inner furnace tube (1), the length of the reinforcing ribs (204) being shorter than the movable installation grooves (202), the inside of the anti-wear tiles (201) being provided with a receiving groove (206), the inside of the receiving groove (206) being filled with heat insulating ceramic (205), the inner side wall of the anti-wear tiles (201) being fixedly connected with a protective sleeve (203), and the inner side wall of the protective sleeve (203) being engraved with friction patterns.

2. The evaporation furnace tube structure of a steam generator according to claim 1, characterized in that: The bottom end of the inner furnace tube (1) is fixedly connected to a mounting base (3), and a mounting seat (6) is provided on one side of the inner furnace tube (1).

3. The evaporation furnace tube structure of a steam generator according to claim 2, characterized in that: A fixing rod (5) is fixedly connected to one side of the mounting seat (6) close to the inner furnace tube (1), and a U-shaped groove (4) is fixedly connected to one end of the fixing rod (5) away from the inner furnace tube (1).

4. The evaporation furnace tube structure of a steam generator according to claim 3, characterized in that: The interior of the U-shaped groove (4) is fixedly connected to a mounting shaft (8), and the outer side wall of the mounting shaft (8) is rotatably connected to an abutment wheel (7), and a side of the abutment wheel (7) close to the inner furnace tube (1) abuts against the outer protection mechanism (2).

5. The evaporation furnace tube structure of a steam generator according to claim 1, characterized in that: The outer wall of the inner furnace tube (1) is fixedly connected to an inner lining (9), the outer wall of the inner lining (9) is fixedly connected to a heat insulating cushion layer (10), and the outer wall of the heat insulating cushion layer (10) is fixedly connected to an outer lining (11).

6. The evaporation furnace tube structure of a steam generator according to claim 5, characterized in that: The outer side wall of the outer lining (11) is fixedly connected to the fixed outer shell (12), and the reinforcing ribs (204) are fixedly connected to the outer side wall of the fixed outer shell (12).

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