Sleeving device for mounting serpentine tube bundle of high-pressure heater into shell

Abstract

The sleeving device comprises a base with a horizontal axis, conveying rollers are symmetrically distributed on the two sides of the axis of the top of the base, the axial directions of the two sets of conveying rollers are horizontal and perpendicular to the axial direction of the base, the multiple conveying rollers in any set are arranged in a spaced mode, and the conveying rollers in any set are perpendicular to the axial direction of the base. The coiled pipe set is placed on the tops of the conveying rollers and conveyed in the axial direction of the base, a motor is arranged on the side face of the conveying downstream end of the base, a coaxial first transmission shaft is arranged below the conveying rollers corresponding to the same end, and one end of the first transmission shaft is in transmission connection with the motor. According to the device, the motor is adopted to drive the conveying roller at the downstream tail end to rotate, the coiled pipe set at the top moves slowly, the coiled pipe set makes rolling friction contact with the conveying roller at the upstream, the whole coiled pipe set moves accurately in the moving process, assembling is automatic, transportation is stable, the time of the assembling process of the coiled pipe set and the shell is short, the labor cost is saved, and the production efficiency is improved. A lot of time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal power generation equipment, in particular to a sleever for sleeving a serpentine tube bundle of a high-pressure heater into a shell. Background Art

[0002] As an indispensable and important device in a thermal power station, the serpentine tube high-pressure heater has a complex structure and belongs to large-scale and heavy equipment, and its manufacturing difficulty is relatively high. Especially, the assembly process of sleeving and embedding the serpentine tube bundle into the shell is a major difficulty. The traditional manufacturing method is to separately manufacture the equipment shell and the tube bundle, and then sleeve the tube bundle into the shell. During the sleeving process, the tube bundle remains stationary, and only by relying on auxiliary tooling to drag the shell towards the tube bundle can the tube bundle be finally sleeved into the shell. Due to the heavy weight of the tube bundle, for this sleeving method, a traveling crane with a relatively large lifting capacity is required to lift the shell, which has high requirements for the hoisting capacity of the workshop. Also, due to the heavy tonnage of the equipment tube bundle, a large amount of manpower, material resources and time are required to complete the sleeving of the tube bundle. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a sleever for sleeving a serpentine tube bundle of a high-pressure heater into a shell, so as to solve the problem that the assembly of the serpentine tube bundle and the shell is laborious.

[0004] In order to solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0005] A sleever for sleeving a serpentine tube bundle of a high-pressure heater into a shell includes a base with a horizontal axis. On both sides of the axis at the top of the base, conveying roller wheels are symmetrically distributed. The axial directions of the two groups of conveying roller wheels are horizontal and perpendicular to the axial direction of the base. In any one group, multiple conveying roller wheels are arranged separately. The serpentine tube group is placed on the top of the conveying roller wheels and is conveyed along the axial direction of the base. A motor is arranged on the side of the downstream end of the conveying of the base. A first transmission shaft with the same axial direction is arranged below the conveying roller wheels corresponding to the same end. One end of the first transmission shaft is in transmission connection with the motor. A first sprocket is sleeved on each of the two ends of the first transmission shaft close to the two ends. The central shafts of the two conveying roller wheels corresponding to the upper part respectively extend towards the relative outer ends to form second transmission shafts. Second sprockets are respectively sleeved on the two second transmission shafts corresponding to the positions of the first sprockets. The two groups of upper and lower opposite second sprockets and first sprockets are sleeved and connected by a first chain. Third sprockets are sleeved on the outer ends of the central shafts of the conveying roller wheels adjacent to the upstream and downstream ends of the second transmission shaft. A second chain is sleeved on the third sprockets at the outer ends of the adjacent conveying roller wheels.

[0006] As a preferred implementation scheme, both ends of any one conveying roller wheel are rotatably arranged on the top of a vertical first support frame, and the bottom of the first support frame is fixed on the top of the base. The first transmission shaft is rotatably arranged on a second support frame on the top of the base.

[0007] As a preferred embodiment, support plates along the transportation direction are respectively arranged on both sides of the base of the serpentine tube group at the top parts opposite to the conveying rollers. Rolling wheels are respectively arranged on the relative inner sides of the two support plates at the bottom of the serpentine tube group, and the bottoms of the rolling wheels are in contact with the top parts of the central shafts at one ends of the relative inner sides of the conveying rollers.

[0008] As a preferred embodiment, the support plates are made of H-shaped steel with a horizontal axis. The top plane of the support plate is fixed to the bottom of the serpentine tube group, and the bottom plane of the support plate is in contact with the top of the conveying roller.

[0009] The beneficial effects of the present utility model are as follows: This device drives the conveying roller at the downstream end to rotate by an electric motor, so that the serpentine tube group at the top moves slowly. The serpentine tube group is in rolling friction contact with the upstream conveying roller, enabling the entire serpentine tube group to move precisely during the movement process, realizing automatic assembly, with stable transportation. The assembly process time between the serpentine tube group and the outer shell is short, saving labor costs and a large amount of time and labor. Description of the Drawings

[0010] The following further details the specific implementation manners of the present utility model in conjunction with the drawings, where:

[0011] Figure 1 is the side view of the present utility model;

[0012] Figure 2 is the top view of the present utility model;

[0013] Figure 3 is the side view when the present utility model is in use;

[0014] Figure 4 is the top view when the present utility model is in use;

[0015] Figures 1 to 4 Explanation of the reference numerals in the drawings: 1. Base; 2. Electric motor; 3. First sprocket; 4. First chain; 5. Second sprocket; 6. Third sprocket; 7. Second transmission shaft; 8. Conveying roller; 9. Support frame; 10. First transmission shaft; 11. Second support frame; 12. Second chain; 13. Serpentine tube group; 14. Support plate; 15. Rolling wheel. Specific Embodiment

[0016] The following details the specific implementation scheme of the present utility model in conjunction with the drawings.

[0017] As Figures 1 to 4The sleeve device for installing the serpentine tube bundle of the high-pressure heater shown inside the shell includes a base 1 with a horizontal axis. At the top of the base 1, conveyor rollers 8 are symmetrically distributed on both sides of the axis. The axial directions of the two groups of conveyor rollers 8 are horizontal and perpendicular to the axis of the base 1. In any one group, multiple conveyor rollers 8 are arranged separately. The serpentine tube bundle 13 is placed on the top of the conveyor rollers 8 and is conveyed along the axis of the base 1. On the side of the downstream end of the conveyance of the base 1, there is a motor 2. Below the conveyor rollers 8 corresponding to the same end, there is a first transmission shaft 10 with the same axis. One end of the first transmission shaft 10 is in transmission connection with the motor 2. At each of the two ends of the first transmission shaft 10 close to the ends, there is a first sprocket 3 sleeved. The central axes of the two conveyor rollers 8 corresponding to the upper part respectively extend towards the outer ends relative to each other, and second transmission shafts 7 are respectively sleeved with second sprockets 5 at the positions corresponding to the first sprockets 3. The two groups of second sprockets 5 and first sprockets 3 that are opposite up and down are sleeved and connected by a first chain 4. At the outer ends of the central axes of the conveyor rollers 8 adjacent to the upstream and downstream ends of the second transmission shaft 7, third sprockets 6 are sleeved. A second chain 12 is sleeved on the third sprockets 6 at the outer ends of the adjacent conveyor rollers 8.

[0018] Specifically, the motor 2 drives the first transmission shaft 10 to rotate. The first sprockets 3 at both ends of the first transmission shaft 10 drive the first chain 4 to rotate. The first chain 4 drives the second sprocket 5 to rotate. The second sprocket 5 drives the coaxial conveyor rollers 8 to rotate. The conveyor rollers 8 at one end drive the adjacent conveyor rollers 8 to rotate through the second chain 12. The serpentine tube bundle 13 is placed on the top of the conveyor rollers 8 on the base 1. The motor 2 drives several adjacent conveyor rollers 8 at the downstream end to rotate. Driven by the conveyor rollers 8 at the most downstream, the serpentine tube bundle 13 can move forward. The part of the serpentine tube bundle 13 close to the downstream is on the actively rotating conveyor rollers 8, and the part of the serpentine tube bundle 13 close to the upstream rotates passively by friction, making the movement process of the serpentine tube bundle 13 stable and easy to control.

[0019] Among them, both ends of any one conveyor roller 8 are rotatably arranged at the top of a vertical first support frame 9. The bottom of the first support frame 9 is fixed on the top of the base 1. The first transmission shaft 10 is rotatably arranged on the second support frame 11 on the top of the base 1. The first support frames 9 on both sides of the axis are separated from each other, which is convenient for accurately supporting the serpentine tube bundle 13.

[0020] Such as Figure 3, on both sides of the base of the serpentine tube group 13, support plates 14 along the transportation direction are respectively arranged at the tops opposite to the conveying roller wheels 8. At the relative inner sides of the two support plates 14 at the bottom of the serpentine tube group 13, rolling wheels 15 are respectively arranged. The bottom of the rolling wheel 15 is in contact with the top of the central axis at one end of the relative inner side of the conveying roller wheel 8. The conveying roller wheel 8 is used to support the support plate 14 at the bottom of the serpentine tube group 13. The bottom of the serpentine tube group 13 is also provided with rolling wheels 15. Through the contact between the rolling wheels 15 and the inner end of the central axis of the conveying roller wheel 8, during the movement of the serpentine tube group 13, the conveying roller wheel 8 rotates accordingly, and the central axis of the conveying roller wheel 8 drives the rolling wheels 15 to rotate, promoting the movement of the serpentine tube group 13.

[0021] Among them, the support plate 14 adopts an H-shaped steel with a horizontal axis. The top plane of the support plate 14 is fixed to the bottom of the serpentine tube group 13, and the bottom plane of the support plate 14 is in contact with the top of the conveying roller wheel 8. The H-shaped steel has strong load-bearing capacity.

[0022] The working process of the present utility model is as follows:

[0023] According to Figures 1-4 shown, first, adjust the center line between the serpentine tube group 13 and the housing to be embedded to ensure their concentricity. Then, just start the motor 2 to make the serpentine tube group 13 slowly move axially. The serpentine tube group 13 slowly enters the interior of the housing. Finally, the housing and the serpentine tube group 13 are assembled in place.

[0024] The above embodiments only illustratively explain the principle and efficacy of the creation of the present utility model, as well as some applied embodiments, rather than being used to limit the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A high-pressure heater serpentine tube bundle is installed in a housing, characterized in that: The invention comprises a base (1) with a horizontal axis, a top of the base (1) having conveying rollers (8) symmetrically distributed on both sides of the axis, the axes of the two groups of conveying rollers (8) being horizontal and perpendicular to the axis of the base (1), a plurality of conveying rollers (8) in any group being arranged apart, a serpentine tube group (13) being placed on the top of the conveying rollers (8) and conveying along the axial direction of the base (1), a motor (2) being arranged on the side of the downstream end of the conveying of the base (1), a coaxial first transmission shaft (10) being arranged below the conveying rollers (8) at the same end, one end of the first transmission shaft (10) being connected to the motor (2) for transmission, and the first transmission shaft (10) being connected to the motor (2) for transmission. A first sprocket (3) is sleeved on each of the two ends of the moving shaft (10), and second transmission shafts (7) are respectively extended to the opposite outer ends from the central axes of the two upper conveying rollers (8). The two second conveying shafts (7) are sleeved with second sprockets (5) at positions opposite to the first sprockets (3). Two sets of upper and lower opposite second sprockets (5) and the first sprocket (3) are sleeved and connected by a first chain (4). The outer ends of the central axes of the conveying rollers (8) adjacent to the upper and downstream ends of the second transmission shaft (7) are sleeved with third sprockets (6), and the second chain (12) is sleeved on the third sprockets (6) at the outer ends of the adjacent conveying rollers (8).

2. The high-pressure heater serpentine tube bundle is installed in the casing according to claim 1, characterized in that: Both ends of any conveying roller (8) are rotatably arranged on the top of a vertical first support frame (9), the bottom of the first support frame (9) is fixed on the top of the base (1), and the first transmission shaft (10) is rotatably arranged on a second support frame (11) on the top of the base (1).

3. The high-pressure heater serpentine tube bundle is installed in the casing according to claim 1, characterized in that: Support plates (14) along the transport direction are respectively arranged on both sides of the base of the serpentine tube group (13) relative to the top of the conveying roller (8), and rolling wheels (15) are respectively arranged on the opposite inner sides of the two support plates (14) at the bottom of the serpentine tube group (13), and the bottom of the rolling wheel (15) is in contact with the top of the central axis of the opposite inner end of the conveying roller (8).

4. The high-pressure heater serpentine tube bundle is installed in the casing according to claim 3, characterized in that: The support plate (14) is made of axially horizontal H-shaped steel, the top plane of the support plate (14) is fixed to the bottom of the serpentine tube group (13), and the bottom plane of the support plate (14) is in contact with the top of the conveying roller (8).

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