A kind of anti-corrosion tube row assembly for boiler water-cooled wall heating surface

Abstract

The present invention relates to the technical field of boiler equipment, and specifically to an anti-abrasion tube row assembly for the heating surface of a boiler water-cooled wall, comprising an inner wall of a boiler, a serpentine tube row, a disc, a limit assembly and a baffle. Two slots are provided on the left and right sides of the inner wall of the boiler, and two limit blocks are fixed on the inner side surface of the inner wall of the boiler. The inner side of the limit block is slidably connected with a disc, and the limit assembly is screwed on a screw fixed in the middle of the disc. A sleeve is fixed on the outer end of the screw. An inner bracket arranged on the inner side of the sleeve is sleeved on the outer side of the serpentine tube row, and a stop block is fixed on the side end of the inner bracket. The stop block is clamped in a square groove provided on the inner side surface of the baffle. A support block is sleeved on each curved pipe of the serpentine tube row, and the pipes of the serpentine tube row are conveniently fixed by the sleeve and the support block. The disc drives the sleeve to move and fix by the limit assembly, so as to facilitate the fixation of serpentine tube rows of different models.

Description

Technical Field

[0001] The invention relates to the technical field of boiler equipment, in particular to an anti-abrasion tube row assembly for a heating surface of a boiler water-cooled wall. Background Art

[0002] Boiler tubes are widely used in superheated steam tubes, boiling water tubes and other high temperature and high pressure conditions. Sometimes multiple boiler tubes need to be used side by side according to needs. The boiler tube row includes multiple boiler tubes and connecting plates connecting multiple boiler tubes. As the boiler runs for a longer time, dirt accumulates inside the boiler, which can easily cause blockage of the boiler's heat exchange surface, resulting in the boiler not being able to operate normally and increasing corrosion to the equipment.

[0003] However, the existing boiler tubes are easily separated from the inner plastic coating layer, causing pipeline blockage. The corrosion layer is made of a single epoxy resin material, which leads to poor impact resistance and easy to cause anti-corrosion failure. In addition, the boiler tubes are long and easily warped and deformed due to uneven heating. At the same time, the spacing between the vertical tubes of different types of serpentine tubes will change, and the fixing device of the tube row is inconvenient to change, affecting the installation of the tube row. Summary of the invention

[0004] The object of the present invention is to provide an anti-corrosion tube row assembly for the heating surface of a boiler water-cooled wall, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tube row assembly for the anti-abrasion of the heating surface of the water-cooled wall of a boiler, comprising a boiler inner wall, a serpentine tube row, a disc, a limit assembly and a baffle, a serpentine tube row parallel to the boiler inner wall is arranged on the boiler inner wall, two card slots are arranged on the left and right sides of the boiler inner wall, two limit blocks are fixed on the inner side surface of the boiler inner wall, a disc is slidably connected to the inner side of the limit block, and the limit assembly is screwed on the screw fixed in the middle of the disc The inner end of the limit assembly is against the inner wall of the limit block, and a ferrule is fixed to the outer end of the screw. The inner bracket arranged on the inner side of the ferrule is sleeved on the outer side of the serpentine tube row, and a stopper is fixed to the side end of the inner bracket. The stopper is clamped in the square groove opened on the inner side of the baffle, and the baffle covers the outer side of the serpentine tube row. The block arranged on the inner side of the baffle is clamped in the slot. A round rod is arranged on the inner side of each bent pipe of the serpentine tube row, and the support block sleeved on the round rod is clamped on the bent pipe of the serpentine tube row.

[0006] Preferably, the limit block is in a circular shape, the cross-section of the limit block is in a convex shape, the support block is in a hook shape, the heat-resistant layer arranged on the inner end of the support block is against the outer side of the bent pipe of the serpentine tube row, and the inner side surface of the serpentine tube row is provided with an anti-corrosion layer.

[0007] Preferably, the outer diameter of the disc is larger than the opening width of the limit block, a circular groove is provided on the outer side of the screw in the middle of the disc, the outer diameter of the screw is smaller than the opening width of the limit block, and the screw protrudes from the outer side of the limit block.

[0008] Preferably, the limiting assembly includes a threaded sleeve, an inclined block and an arc block, the threaded sleeve is sleeved on the outside of the screw, and the outer diameter of the threaded sleeve is smaller than the opening width of the limiting block, and two arc-shaped protrusions are fixed to the inner end of the threaded sleeve.

[0009] Preferably, a fixing rod is fixed in the rotating groove formed on the outer side surface of the protrusion, and the fixing rod passes through the circular hole formed on the end of the inclined block, and a notch is formed in the middle of the other end of the inclined block.

[0010] Preferably, a square is fixed in the middle of the inner side surface of the arc block, the width of the square is consistent with the width of the notch, and round blocks are fixed on both sides of the square, and the round blocks pass through the round hole opened at the other end of the inclined block.

[0011] Preferably, the curvature of the arc block is consistent with that of the disc, the width of the arc block is smaller than the width of the inner cavity of the limiting block, and the sum of the lengths of the threaded sleeve and the protrusion is smaller than the length of the screw.

[0012] Preferably, the ferrule is arc-shaped, the inner side of the inner bracket is provided with folds, and the inner side of the inner bracket is corrosion-resistant, and both sides of the inner bracket are fixed with blocks that are tilted outward, the opening width of the square groove is smaller than the width of the inner cavity of the square groove, and the block is clamped in the square groove.

[0013] Compared with the prior art, the invention has the following advantages:

[0014] 1. The anti-corrosion layer provided on the inner side of the anti-abrasion tube row assembly for the heating surface of the boiler water-cooled wall provided by the present invention provides a grid lining to reduce shedding, and the pipes of the serpentine tube row are conveniently fixed by the clamping sleeve and the support block, thereby reducing the exposed area of ​​the serpentine tube row. The disc drives the clamping sleeve to move and fix it through the limit assembly, which is convenient for fixing serpentine tube rows of different models;

[0015] 2. The anti-abrasion tube row assembly for the heating surface of the boiler water-cooled wall proposed by the present invention reduces the damage of the ferrule and the support block through the inner bracket and the heat-resistant layer. At the same time, the inner bracket and the heat-resistant layer are covered on the outer side of the serpentine tube row, and the impact of the serpentine tube row is reduced by the covering of the baffle, so as to extend the service life of the serpentine tube row;

[0016] 3. The anti-abrasion tube row assembly for the heating surface of the boiler water-cooled wall proposed by the present invention rotates on the outside of the screw through the limiting assembly, which facilitates the fixation and movement of the disc in the limiting block. The rotation of the threaded sleeve drives the inclined block to move, and the inclined block pushes the arc block against the inner cavity of the limiting block to facilitate the fixation of the disc, thereby facilitating the fixing of the serpentine tube row with the clamping sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a side view of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the present invention;

[0019] Figure 3 A three-dimensional diagram of the present invention;

[0020] Figure 4 A three-dimensional diagram of the inner wall and serpentine tube array of the boiler of the present invention;

[0021] Figure 5 It is a three-dimensional diagram after the baffle in the present invention is flipped;

[0022] Figure 6 A sectional three-dimensional diagram of the present invention;

[0023] Figure 7 It is an exploded three-dimensional diagram of the disc, the limit assembly and the ferrule in the present invention.

[0024] In the figure: 1. inner wall of boiler; 11. limit block; 12. clamping groove; 2. serpentine tube row; 21. anti-corrosion layer; 22. round rod; 23. support block; 24. heat-resistant layer; 3. disc; 31. screw rod; 32. annular groove; 4. limit assembly; 41. threaded sleeve; 42. protrusion; 43. fixing rod; 44. oblique block; 45. notch; 46. arc block; 47. square block; 48. round block; 5. clamping sleeve; 51. inner bracket; 52. stop block; 6. baffle; 61. square groove; 62. clamping block. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figures 1 to 7The present invention provides a technical solution: a tube row assembly for preventing corrosion of the heating surface of a boiler water-cooled wall, comprising a boiler inner wall 1, a serpentine tube row 2, a disc 3, a limit assembly 4 and a baffle 6. The boiler inner wall 1 is provided with a serpentine tube row 2 parallel to the boiler inner wall 1, and a round rod 22 is provided on the inner side of each curved tube of the serpentine tube row 2. A support block 23 sleeved on the round rod 22 is clamped on the curved tube of the serpentine tube row 2. The support block 23 is in a hook shape, which is convenient for supporting the serpentine tube row 2 and preventing the serpentine tube row 2 from loosening up and down. A heat-resistant layer 24 provided on the inner side end of the support block 23 abuts against the outer side of the curved tube of the serpentine tube row 2 to prevent the support block 23 from being damaged due to the temperature increase of the serpentine tube row 2. 2 is provided with an anti-corrosion layer 21 to prevent the anti-corrosion layer 21 from falling off from the inner side of the serpentine tube row 2 to avoid blocking the serpentine tube row 2. Two card slots 12 are provided on the left and right sides of the boiler inner wall 1. Two limit blocks 11 are fixed on the inner side of the boiler inner wall 1. The limit block 11 is in a circular shape, and the cross-section of the limit block 11 is in a convex shape. A disc 3 is slidably connected to the inner side of the limit block 11. The outer diameter of the disc 3 is larger than the opening width of the limit block 11. An annular groove 32 is provided on the outer side of the screw 31 in the middle of the disc 3. The outer diameter of the screw 31 is smaller than the opening width of the limit block 11, and the screw 31 protrudes from the outer side of the limit block 11, so that the disc 3 will not fall while moving in the inner cavity of the limit block 11.

[0027] The limiting assembly 4 is screwed on the screw 31 fixed in the middle of the disc 3, and the inner end of the limiting assembly 4 is against the inner wall of the limiting block 11. By rotating the limiting assembly 4, the inner end of the limiting assembly 4 is conveniently against the inner cavity of the limiting block 11, thereby facilitating the fixation of the disc 3 and preventing the serpentine tube row 2 from shaking. The limiting assembly 4 includes a threaded sleeve 41, an inclined block 44 and an arc block 46. The threaded sleeve 41 is sleeved on the outer side of the screw 31, and the outer diameter of the threaded sleeve 41 is smaller than the opening width of the limiting block 11, so that the disc 3 can be fixed easily. To facilitate the movement of the threaded sleeve 41, two arc-shaped protrusions 42 are fixed on the inner side end of the threaded sleeve 41. The length of the threaded sleeve 41 and the protrusion 42 is less than the length of the screw rod 31. When the threaded sleeve 41 moves toward the disc 3, the protrusion 42 is clamped in the annular groove 32 opened in the middle of the disc 3, which does not affect the rotation and movement of the threaded sleeve 41. A fixing rod 43 is fixed in the rotating groove opened on the outer side of the protrusion 42. The fixing rod 43 passes through the circular hole opened at the end of the inclined block 44 to facilitate the rotation of the inclined block 44. A notch 45 is provided in the middle of the other end of the inclined block 44. The curvature of the arc block 46 is consistent with the curvature of the disc 3. The width of the arc block 46 is smaller than the width of the inner cavity of the limit block 11, so that the arc block 46 does not affect the movement of the disc 3 when the threaded sleeve 41 is not rotated. A square block 47 is fixed in the middle of the inner side of the arc block 46. The width of the square block 47 is consistent with the width of the notch 45. Round blocks 48 are fixed on both sides of the square block 47. The round block 48 passes through the round hole provided at the other end of the inclined block 44. , so that the inclined block 44 is conveniently connected to the two sides of the square block 47, thereby facilitating the circular block 48 to be connected to the circular holes opened on both sides of the notch 45. When the threaded sleeve 41 moves toward the direction of the disc 3, the protrusion 42 is connected to the annular groove 32, and the protrusion 42 drives the inclined block 44 to move, thereby increasing the angle between the inclined block 44 and the screw rod 31, thereby driving the arc block 46 to abut against the outer side of the disc 3 and expand outward at the same time, until the outer end of the arc block 46 abuts against the inner cavity of the limit block 11, so as to facilitate the fixation of the disc 3.

[0028] A ferrule 5 is fixed to the outer end of the screw rod 31. The ferrule 5 is arc-shaped. An inner bracket 51 is arranged on the inner side of the ferrule 5 and is sleeved on the outer side of the serpentine tube row 2. The inner side of the inner bracket 51 is provided with wrinkles, and the inner side of the inner bracket 51 is corrosion-resistant to reduce damage to the ferrule 5. At the same time, the two ferrules 5 clamped on each vertical tube reduce the exposed area of ​​the vertical tube, thereby facilitating corrosion protection of the outer wall of the serpentine tube row 2. The fixation of the disc 3 makes it convenient to fix each vertical tube of the serpentine tube row 2 through the ferrule 5 to prevent the serpentine tube row 2 from shaking, thereby reducing the wear on the outer side of the serpentine tube row 2. The two sides of 51 are fixed with blocks 52 tilted outward, and the block 52 is clamped in the square groove 61 opened on the inner side of the baffle 6. The opening width of the square groove 61 is smaller than the width of the inner cavity of the square groove 61. The baffle 6 covers the outer side of the serpentine tube row 2, and the block 62 set on the inner side of the baffle 6 is clamped in the clamping groove 12, which is convenient for the inner bracket 51 to tighten and fix the serpentine tube row 2. At the same time, the baffle 6 covers the outer side of the serpentine tube row 2 to prevent the vertical pipe of the serpentine tube row 2 from deformation, and at the same time reduce the impact of the internal medium of the boiler inner wall 1 on the serpentine tube row 2, so as to extend the service life of the serpentine tube row 2.

[0029] The specific steps of the present invention are as follows: during actual operation, the serpentine tube row 2 arranged on the inner wall 1 of the boiler is convenient for heating and cooling the inner cavity of the boiler, and the heating area is increased by the serpentine tube row 2. The inner side of the anti-corrosion layer 21 arranged on the inner side of the serpentine tube row 2 is provided with a grid-shaped lining to prevent the anti-corrosion layer 21 from falling off from the inner side of the serpentine tube row 2 to avoid blocking the serpentine tube row 2. Two long limit blocks 11 are fixed on the inner wall 1 of the boiler, and a screw 31 is fixed in the middle of the outer side of a plurality of discs 3 slidably connected in the limit block 11 to prevent the disc 3 from falling off, and at the same time facilitate the clamping sleeve 5 fixed at the outer end of the screw 31 to be clamped on each vertical tube of the serpentine tube row 2, and the inner bracket 51 arranged on the inner side of the clamping sleeve 5 increases the heat insulation between the clamping sleeve 5 and the serpentine tube row 2. , reducing the damage of the ferrule 5. At the same time, the two ferrules 5 clamped on each vertical tube reduce the exposed area of ​​the vertical tube, so as to facilitate the corrosion protection of the outer wall of the serpentine tube row 2. The two outward-tilted stoppers 52 fixed on the outer side of the inner bracket 51 are clamped in the square groove 61 opened on the inner side of the baffle 6, which is convenient for the inner bracket 51 to tighten and fix the serpentine tube row 2. At the same time, the baffle 6 is covered on the outer side of the serpentine tube row 2 to prevent the vertical tube of the serpentine tube row 2 from being deformed, and at the same time, the impact of the internal medium of the boiler inner wall 1 on the serpentine tube row 2 is reduced, so as to facilitate the extension of the service life of the serpentine tube row 2. The left and right inner fixed blocks 62 of the baffle 6 are clamped in the clamping groove 12 opened on the boiler inner wall 1, which is convenient for further fixing the baffle 6 and preventing the baffle 6 from falling off;

[0030] The sliding of the disc 3 facilitates the fixation of serpentine tube rows 2 of different specifications. The outer side of the screw rod 31 is screwed with the limit assembly 4. By rotating the limit assembly 4, the inner side end of the limit assembly 4 is conveniently pressed against the inner cavity of the limit block 11, thereby facilitating the fixation of the disc 3 and preventing the serpentine tube row 2 from shaking. The main body threaded sleeve 41 of the limit assembly 4 is screwed on the screw rod 31, which facilitates the threaded sleeve 41 to move back and forth on the screw rod 31. Two protrusions 42 are fixed on the inner side end of the threaded sleeve 41. When the threaded sleeve 41 moves toward the disc 3 When the protrusion 42 is clamped in the middle of the disc 3, a circular groove 32 is provided on the outer side of the screw rod 31, which does not affect the rotation and movement of the threaded sleeve 41. A fixing rod 43 is fixed in the rotating groove provided on the outer side of the protrusion 42, and an inclined block 44 is hinged on the fixing rod 43. A square block 47 is fixed in the middle of the inner side of two opposite arc blocks 46 provided on the surface of the disc 3. The arc block 46 can rotate and move in the inner cavity of the limit block 11. The notch 45 provided in the middle of the other end of the inclined block 44 is clamped in the two ends of the square block 47. On the side, the round blocks 48 fixed on both sides of the square block 47 are hinged in the round holes opened on the side walls of the notch 45, which facilitates the rotation of the inclined block 44. When the threaded sleeve 41 moves toward the direction of the disc 3, the protrusion 42 is clamped in the annular groove 32, and the protrusion 42 drives the inclined block 44 to move, thereby increasing the angle between the inclined block 44 and the screw 31, thereby driving the arc block 46 to abut against the outer side of the disc 3 and expand outward at the same time, until the outer end of the arc block 46 abuts against the inner cavity of the limit block 11, which is convenient for fixing the disc 3, thereby Each vertical tube of the serpentine tube row 2 is fixed to prevent the serpentine tube row 2 from shaking, thereby reducing the wear on the outer side of the serpentine tube row 2. The round rod 22 arranged in the middle of each curved tube of the serpentine tube row 2 is arranged on the inner wall 1 of the boiler. The support block 23 hinged on the round rod 22 is clamped on the outer side of the curved tube of the serpentine tube row 2, which is convenient for supporting the serpentine tube row 2 and preventing the serpentine tube row 2 from loosening up and down. The heat-resistant layer 24 arranged on the inner side of the support block 23 prevents the support block 23 from being damaged due to the temperature increase of the serpentine tube row 2.

[0031] 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 tube row assembly for preventing corrosion of a water-cooled wall heating surface of a boiler, comprising a boiler inner wall (1), a serpentine tube row (2), a disc (3), a stop assembly (4) and a baffle (6), wherein the boiler inner wall (1) is provided with a serpentine tube row (2) parallel to the boiler inner wall (1), and two slots (12) are provided on both left and right sides of the boiler inner wall (1), characterized in that: Two limit blocks (11) are fixed on the inner side of the inner wall (1) of the boiler, a disc (3) is slidably connected to the inner side of the limit block (11), a limit assembly (4) is screwed onto a screw (31) fixed in the middle of the disc (3), the inner side end of the limit assembly (4) abuts against the inner side wall of the limit block (11), a ferrule (5) is fixed to the outer side end of the screw (31), an inner bracket (51) arranged on the inner side of the ferrule (5) is sleeved on the outer side of the serpentine tube row (2), and the inner bracket (51) is sleeved on the outer side of the serpentine tube row (2). A stopper (52) is fixed to the side end of the bracket (51), the stopper (52) is clamped in a square groove (61) provided on the inner side of the baffle (6), the baffle (6) covers the outer side of the serpentine tube row (2), the clamping block (62) provided on the inner side of the baffle (6) is clamped in the clamping groove (12), a round rod (22) is provided on the inner side of each curved tube of the serpentine tube row (2), and a support block (23) sleeved on the round rod (22) is clamped on the curved tube of the serpentine tube row (2); The limiting assembly (4) comprises a threaded sleeve (41), an inclined block (44) and an arcuate block (46); the threaded sleeve (41) is sleeved on the outside of the screw rod (31), and the outer diameter of the threaded sleeve (41) is smaller than the opening width of the limiting block (11); and two arcuate protrusions (42) are fixed to the inner end of the threaded sleeve (41); A fixing rod (43) is fixed in a rotation groove formed on the outer side of the protrusion (42), and the fixing rod (43) passes through a circular hole formed at the end of the inclined block (44). A notch (45) is formed in the middle of the other end of the inclined block (44); The ferrule (5) is arc-shaped, the inner side surface of the inner bracket (51) is provided with folds, and the inner side of the inner bracket (51) is corrosion-resistant, and two side surfaces of the inner bracket (51) are fixed with stoppers (52) that are tilted outward, the opening width of the square groove (61) is smaller than the width of the inner cavity of the square groove (61), and the stoppers (52) are clamped in the square groove (61).

2. The anti-corrosion tube row assembly for the heating surface of the boiler water wall according to claim 1, characterized in that: The limit block (11) is in a circular shape, and the cross section of the limit block (11) is in a convex shape. The support block (23) is in a hook shape. The heat-resistant layer (24) provided at the inner end of the support block (23) abuts against the outer side of the bent pipe of the serpentine tube row (2), and the inner side surface of the serpentine tube row (2) is provided with an anti-corrosion layer (21).

3. The anti-corrosion tube row assembly for the heating surface of the boiler water wall according to claim 1, characterized in that: The outer diameter of the disk (3) is larger than the opening width of the limit block (11); a circular groove (32) is provided on the outer side of a screw rod (31) in the middle of the disk (3); the outer diameter of the screw rod (31) is smaller than the opening width of the limit block (11), and the screw rod (31) protrudes from the outer side of the limit block (11).

4. The anti-corrosion tube row assembly for the heating surface of the boiler water wall according to claim 3, characterized in that: A square block (47) is fixed in the middle of the inner side surface of the arc block (46), the width of the square block (47) is consistent with the width of the notch (45), and round blocks (48) are fixed on both left and right sides of the square block (47), and the round blocks (48) pass through the round hole opened at the other end of the inclined block (44).

5. The anti-corrosion tube row assembly for the heating surface of the boiler water-cooled wall according to claim 4, characterized in that: The arcuate block (46) has an arcuate shape consistent with that of the disc (3), the width of the arcuate block (46) is smaller than the width of the inner cavity of the limit block (11), and the length of the threaded sleeve (41) and the protrusion (42) is smaller than the length of the screw rod (31).

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