Large burner door hole overhaul structure

Abstract

The utility model belongs to the technical field of combustors, and particularly relates to a large combustor door hole overhauling structure. In order to overcome the defects that an existing large combustor overhauling structure is unreasonable, and the dismounting and mounting strength of an overhauling door is large, the following technical scheme is adopted: the large combustor door hole overhauling structure comprises a volute combustor shell, an upward fuel inlet and a fuel outlet on the side face are formed in the volute combustor shell, and an overhauling hole is further formed in the other side face of the volute combustor shell; the access door is mounted in the access hole; the rotating device comprises a mounting seat arranged outside the combustor shell and a hanging rod rotationally arranged on the mounting seat; the adjusting device comprises an upper connecting rod connected with the hanging rod, a lower connecting rod connected with the access door and an adjusting piece, and the adjusting piece is movably connected with the upper connecting rod and the lower connecting rod. The maintenance door has the advantages that after the maintenance door is pulled out of the maintenance hole, the maintenance door can be moved in a rotating mode through the adjusting device and the rotating device, and therefore labor intensity is reduced, and maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of burners, and in particular relates to a door hole inspection structure for a large burner. Background Art

[0002] In the prior art, the temperature of the burner during combustion is very high, and it is necessary to stop the burner from time to time and disassemble the inspection door for inspection and maintenance. For large burners for industrial purposes, the inspection door is relatively heavy (weighing dozens of kilograms or even hundreds of kilograms), and the inspection structure is not entirely reasonable, resulting in high labor intensity when opening, low work efficiency, and very inconvenient operation, which has a large room for improvement. For example, in an existing burner, its circular inspection door is connected to the burner body flange, and it needs to be pulled out manually and moved aside during inspection. Summary of the invention

[0003] Aiming at the disadvantages of unreasonable maintenance structure of existing large burners and high disassembly and assembly strength of maintenance doors, the utility model provides a large burner door hole maintenance structure, reduces labor intensity and improves maintenance efficiency through structural improvement.

[0004] To achieve the above purpose, the utility model adopts the following technical solution: a large burner door hole inspection structure, the large burner door hole inspection structure comprises:

[0005] The volute-shaped burner housing has an upward fuel inlet and a side fuel outlet, and an inspection hole is also provided on the other side;

[0006] Inspection door, installed in the inspection hole;

[0007] The rotating device comprises a mounting seat arranged outside the burner shell, and a suspension rod rotatably arranged on the mounting seat;

[0008] The adjusting device comprises an upper connecting rod connected to the suspension rod, a lower connecting rod connected to the inspection door and an adjusting member, wherein the adjusting member is movably connected to the upper connecting rod and the lower connecting rod.

[0009] The large burner door hole inspection structure of the utility model is provided with a rotating device and an adjusting device. When the inspection door is pulled out from the inspection hole, the inspection door can be moved by rotating through the adjusting device and the rotating device, thereby reducing labor intensity and improving inspection efficiency. The process of pulling out the inspection door and the moving process after pulling out the inspection door can rely on manpower or other power.

[0010] As an improvement, the adjusting member is threadedly connected to the upper connecting rod, the adjusting member is threadedly connected to the lower connecting rod, the adjusting member is provided with an upper threaded hole and a lower threaded hole, and the upper threaded hole and the lower threaded hole are in different directions.

[0011] As an improvement, an operating hole is provided on the adjusting member.

[0012] As an improvement, the upper connecting rod and the suspension rod are rotatably connected, the adjusting device includes a pull rod arranged on the inspection door, the lower connecting rod and the pull rod are rotatably connected, the rotation plane of the upper connecting rod is perpendicular to the rotation plane of the lower connecting rod, and the rotation plane of the lower connecting rod is parallel to the axis of the inspection hole.

[0013] As an improvement, a bracket is provided below the inspection hole of the burner housing.

[0014] As an improvement, a limiting protection protrusion is formed at one end of the bracket away from the inspection hole.

[0015] As an improvement, the adjusting device includes a seat ear arranged on the inspection door, and the pull rod is rotatably connected to the seat ear.

[0016] As an improvement, a sleeve is provided on the mounting seat, and the suspension rod is inserted into the sleeve and rotatably connected to the sleeve.

[0017] As an improvement, the mounting seat includes an upper mounting seat and a lower mounting seat, the sleeve passes through the upper mounting seat and is inserted into the lower mounting seat; the hanger has a force-bearing part, an axial force-bearing bearing is installed on the hanger, and the axial force-bearing bearing supports the force-bearing part.

[0018] As an improvement, the rotation angle of the boom is 90° to 180°.

[0019] As an improvement, there is a gap between the inspection door and the inspection hole; the inspection door is flange-connected to the burner shell; a pull ring is provided on the inspection door; and a guide surface is provided at the inner end of the inspection door.

[0020] The beneficial effect of the large burner door hole maintenance structure of the utility model is that a rotating device and an adjusting device are provided. When the maintenance door is pulled out from the maintenance hole, the maintenance door can be moved by rotating through the adjusting device and the rotating device, thereby reducing labor intensity and improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 and Figure 2 It is a schematic diagram of the structure of the large burner door hole inspection structure at different angles according to the first embodiment of the utility model (when the inspection door is not removed).

[0022] Figure 3 It is a structural schematic diagram of the large burner door hole inspection structure of the first embodiment of the utility model (after the inspection door is moved out of the inspection door and raised, and before it is rotated).

[0023] In the figure, 1, burner housing; 11, fuel inlet; 12, fuel outlet; 13, inspection hole;

[0024] 2. Inspection door;

[0025] 3. Rotating device; 31. Mounting seat; 32. Suspension rod; 321. Force bearing part; 33. Casing;

[0026] 4. Adjustment device; 41. Upper connecting rod; 42. Lower connecting rod; 43. Adjustment member; 431. Operation hole; 44. Pull rod; 45. Seat ear;

[0027] 5. bracket; 51. position limiting protection convex part;

[0028] 6. Pull ring;

[0029] 7. Axial force bearing. DETAILED DESCRIPTION

[0030] The technical solutions of the embodiments of the present invention are explained and described below, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0031] See also Figures 1 to 3 The large burner door hole inspection structure of the utility model embodiment comprises:

[0032] The volute-shaped burner housing has an upward fuel inlet and a side fuel outlet, and an inspection hole is also provided on the other side;

[0033] Inspection door, installed in the inspection hole;

[0034] The rotating device comprises a mounting seat arranged outside the burner shell, and a suspension rod rotatably arranged on the mounting seat;

[0035] The adjusting device comprises an upper connecting rod connected to the suspension rod, a lower connecting rod connected to the inspection door and an adjusting member, wherein the adjusting member is movably connected to the upper connecting rod and the lower connecting rod.

[0036] The large burner door hole inspection structure of the utility model is provided with a rotating device and an adjusting device. When the inspection door is pulled out from the inspection hole, the inspection door can be moved by rotating through the adjusting device and the rotating device, thereby reducing labor intensity and improving inspection efficiency. The process of pulling out the inspection door and the moving process after pulling out the inspection door can rely on manpower or other power.

[0037] Embodiment 1

[0038] See also Figures 1 to 3 The large burner door hole inspection structure of the first embodiment of the utility model comprises:

[0039] The volute-shaped burner housing has an upward fuel inlet and a side fuel outlet, and an inspection hole is also provided on the other side;

[0040] Inspection door, installed in the inspection hole;

[0041] The rotating device comprises a mounting seat arranged outside the burner shell, and a suspension rod rotatably arranged on the mounting seat;

[0042] The adjusting device comprises an upper connecting rod connected to the suspension rod, a lower connecting rod connected to the inspection door and an adjusting member, wherein the adjusting member is movably connected to the upper connecting rod and the lower connecting rod.

[0043] In this embodiment, the suspension rod is roughly L-shaped, and reinforcing ribs are provided at the bend of the suspension rod.

[0044] In this embodiment, the adjusting member is threadedly connected to the upper connecting rod, and the adjusting member is threadedly connected to the lower connecting rod. The adjusting member is provided with an upper threaded hole and a lower threaded hole, and the upper threaded hole and the lower threaded hole are in different directions.

[0045] In this embodiment, an operating hole is provided on the adjusting member, and a lever can be inserted into the operating hole, thereby achieving labor-saving operation.

[0046] In this embodiment, the upper connecting rod and the suspension rod are rotatably connected, the adjusting device includes a pull rod arranged on the inspection door, the lower connecting rod and the pull rod are rotatably connected, the rotation plane of the upper connecting rod is perpendicular to the rotation plane of the lower connecting rod, and the rotation plane of the lower connecting rod is parallel to the axis of the inspection hole.

[0047] In this embodiment, a bracket is provided below the inspection hole of the burner housing.

[0048] In this embodiment, a position limiting protection convex portion is formed at one end of the bracket away from the inspection hole. The position limiting protection convex portion plays a protective and position limiting role at the same time. In the process of pulling out the inspection door, the position limiting protection convex portion can prevent the inspection door from being pulled out excessively and falling off the bracket. At the same time, the position limiting protection convex portion prevents the position limiting protection convex portion from being pulled out too much, so that the upper connecting rod, the adjusting member, the lower connecting rod, and the pull rod are basically in a vertical state, which is conducive to the operation of the adjusting member, and thus it is more labor-saving when lifting the inspection door.

[0049] In this embodiment, the adjustment device includes a seat ear arranged on the inspection door, and the pull rod is rotatably connected to the seat ear. The rotational connection between the upper connecting rod and the suspension rod, and between the lower connecting rod and the pull rod can be realized by a U-shaped piece, a pin shaft and an anti-slip piece, and the upper connecting rod, the lower connecting rod and the U-shaped piece are welded. The seat ear has two parallel walls, and the pull rod is rotatably connected to the seat ear by a pin shaft and an anti-slip piece.

[0050] In this embodiment, a sleeve is provided on the mounting seat, and the suspension rod is inserted into the sleeve and rotatably connected to the sleeve.

[0051] In this embodiment, the mounting seat includes an upper mounting seat and a lower mounting seat, the sleeve passes through the upper mounting seat and is inserted into the lower mounting seat; the hanger has a force-bearing part, an axial force-bearing bearing is installed on the hanger, and the axial force-bearing bearing supports the force-bearing part to reduce friction during the rotation of the hanger.

[0052] In other embodiments, other structures such as steel ball groups may be used instead of axial force bearings to reduce friction.

[0053] In this embodiment, the rotation angle of the suspension rod is 90° to 180°.

[0054] In this embodiment, there is a gap between the inspection door and the inspection hole; the inspection door is flange-connected to the burner housing; a pull ring is provided on the inspection door; and a guide surface is provided at the inner end of the inspection door.

[0055] The working principle of the large burner door hole inspection structure of the present embodiment is as follows: during the operation of the burner, the inspection door is connected to the burner shell flange by bolts and nuts, and there is a small gap between the lower end of the inspection door and the bracket. When maintenance is required, the bolts and nuts are first removed, and the inspection door can be removed from the burner shell. In the process of removing the inspection door, the pull ring on the inspection door is first pulled horizontally and linearly by manpower or other power such as a motor to pull the inspection door out of the inspection hole of the burner shell. In the process of pulling out the inspection door, the suspension rod rotates. Since the upper connecting rod and the suspension rod are rotationally connected and the rotation plane of the upper connecting rod is vertical and perpendicular to the axis of the inspection hole, when the movable connection nodes are connected When there is insufficient clearance (the matching accuracy requirements of each active node are low, so there are clearances, and more clearances can be deliberately left), the adjustment part can be operated to meet the vertical pull-out requirements of the inspection door. When the inspection door is completely pulled out of the inspection hole and falls onto the bracket, the inspection door is supported by the bracket for easy operation. At this time, the lever can be inserted into the operating hole of the adjustment part, and the adjustment part can be turned to reduce the distance between the upper connecting rod and the lower connecting rod, and the inspection door can be pulled upward. When the lifting height of the inspection door is greater than the limit protection convex part of the bracket, the suspension rod is rotated by manpower or other power such as a motor to rotate the inspection door to a certain angle. At this time, the inspection door is completely removed from the inspection hole and maintenance work can be carried out. Since the inspection door is heavy, the inspection door will not rotate without external force, so there is no need to fix the inspection door additionally. When the inspection is completed, rotate the suspension rod to rotate the inspection door to the position corresponding to the inspection hole, then operate the adjustment member to lower the inspection door, adjust the inspection door so that the inspection door is aligned with the inspection door, and then push the inspection door to push it back into the inspection hole. Since the upper connecting rod is rotatably connected to the suspension rod, the lower connecting rod is rotatably connected to the pull rod, and the pull rod is rotatably connected to the seat ear on the inspection door, the relative position of the upper connecting rod and the lower connecting rod can be adjusted by the adjustment member, and the rotation plane of the upper connecting rod is perpendicular to the rotation plane of the lower connecting rod. At the same time, due to the gap between the movable parts, the position of the inspection door in three-dimensional space can be adjusted.

[0056] The beneficial effects of the large burner door hole inspection structure of the first embodiment of the utility model are as follows: a rotating device and an adjusting device are provided, and when the inspection door is pulled out from the inspection hole, the inspection door can be moved by rotating through the adjusting device and the rotating device, thereby reducing labor intensity and improving inspection efficiency; a bracket is provided, and the inspection door is supported by the bracket after being fully pulled out, and there is no need to support the inspection door separately, which is convenient for operation; a limiting protection convex portion is formed on the bracket to prevent the inspection door from falling and ensure safety; a limiting protection convex portion is formed on the bracket to limit the position of the inspection door, so that the upper connecting rod, the adjusting part and the lower connecting rod are basically vertical, which is conducive to operating the adjusting part to lift the inspection door; the upper connecting rod is rotatably connected to the suspension rod, and the horizontal movement of the inspection door is realized when the adjusting part is not separated from the upper connecting rod and the lower connecting rod; the front, back, left, right, up and down positions of the inspection door can be adjusted.

[0057] The above is only a specific implementation of the invention, but the protection scope of the invention is not limited thereto. Those skilled in the art should understand that the invention includes but is not limited to the contents described in the above specific implementation. Any modification that does not deviate from the functional and structural principles of the invention will be included in the scope of the claims.

Claims

1. Large burner door hole inspection structure, characterized by: The large burner door hole inspection structure comprises: A volute-shaped burner casing (1) is provided with an upward fuel inlet (11) and a side fuel outlet (12), and an inspection hole (13) is also provided on the other side; An inspection door (2) installed in the inspection hole (13); The rotating device (3) comprises a mounting seat (31) arranged outside the burner housing (1) and a suspension rod (32) rotatably arranged on the mounting seat (31); The adjusting device (4) comprises an upper connecting rod (41) connected to the suspension rod (32), a lower connecting rod (42) connected to the inspection door (2), and an adjusting member (43); the adjusting member (43) is movably connected to the upper connecting rod (41) and the lower connecting rod (42).

2. The large burner door hole inspection structure according to claim 1 is characterized in that: The adjusting member (43) is threadedly connected to the upper connecting rod (41), and the adjusting member (43) is threadedly connected to the lower connecting rod (42). The adjusting member (43) is provided with an upper threaded hole and a lower threaded hole, and the upper threaded hole and the lower threaded hole are in different directions.

3. The large burner door hole inspection structure according to claim 2 is characterized in that: The upper connecting rod (41) and the suspension rod (32) are rotatably connected, the adjusting device (4) comprises a pull rod (44) arranged on the inspection door (2), the lower connecting rod (42) and the pull rod (44) are rotatably connected, the rotation plane of the upper connecting rod (41) is perpendicular to the rotation plane of the lower connecting rod (42), and the rotation plane of the lower connecting rod (42) is parallel to the axis of the inspection hole (13); An operating hole (431) is provided on the adjusting member (43).

4. The large burner door hole inspection structure according to claim 3 is characterized in that: A bracket (5) is provided below the inspection hole (13) of the burner housing (1).

5. The large burner door hole inspection structure according to claim 4 is characterized in that: A position limiting protection protrusion (51) is formed at one end of the bracket (5) away from the inspection hole (13).

6. The large burner door hole inspection structure according to claim 3 is characterized in that: The regulating device (4) further comprises a seat ear (45) arranged on the inspection door (2), and the pull rod (44) is rotatably connected to the seat ear (45).

7. The large burner door hole inspection structure according to claim 1 is characterized in that: A sleeve (33) is provided on the mounting seat (31), and the suspension rod (32) is inserted into the sleeve (33) and is rotatably connected to the sleeve (33).

8. The large burner door hole inspection structure according to claim 7, characterized in that: The mounting seat (31) comprises an upper mounting seat (31) and a lower mounting seat (31), and a sleeve (33) passes through the upper mounting seat (31) and is inserted into the lower mounting seat (31); the suspension rod (32) has a force-bearing portion (321), an axial force-bearing bearing (7) is installed on the suspension rod (32), and the axial force-bearing bearing (7) supports the force-bearing portion (321).

9. The large burner door hole inspection structure according to claim 1, characterized in that: The rotation angle of the suspension rod (32) is 90° to 180°.

10. The large burner door hole inspection structure according to claim 1, characterized in that: There is a gap between the inspection door (2) and the inspection hole (13); the inspection door (2) is flange-connected to the burner housing (1); a pull ring (6) is provided on the inspection door (2); and a guide surface is provided at the inner end of the inspection door (2).

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