Postweld heat treatment device for boiler tank

Abstract

The utility model discloses a boiler tank postweld heat treatment device which comprises a base, two semi-circular barrels, an opening and closing assembly, a feeding plate, a lead screw, a guide rail and a feeding motor, the two semi-circular barrels are arranged on the base through rotating shafts in the longitudinal direction in a rotating mode, and one sides of the two semi-circular barrels are in transmission connection through the opening and closing assembly. A plurality of electric heating belts are arranged on the inner wall of each semicircular barrel, the lead screw is arranged on the base in the horizontal direction, one end of the lead screw extends into the lower portion of the two semicircular barrels, the feeding plate is arranged above the lead screw and the guide rail in the horizontal direction, and the feeding motor is fixedly arranged on the base and is in transmission connection with the other end of the lead screw. According to the utility model, the boiler tank body is fed into the two semicircular cylinders through the feeding plate, so that the outer wall of the tank body is wrapped with the electric heating tape and the electric heating tape is heated, and a worker only needs to hoist the tank body and does not need to wind or detach the electric heating tape in the whole process, so that a large amount of time and labor cost are saved, and the production efficiency is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of post-weld heat treatment technology, and in particular to a post-weld heat treatment device for boiler tanks. Background Technology

[0002] Post-weld heat treatment of boiler bodies refers to the heat treatment of the boiler after welding by heating and holding it at a certain temperature to improve the microstructure and properties of the weld joint and eliminate residual welding stress. The main purpose of post-weld heat treatment of boilers is to reduce the yield strength of the weldment at high temperatures through high-temperature tempering, induce plastic flow in areas of high internal stress, gradually reduce elastic deformation, and gradually increase plastic deformation, thereby reducing stress.

[0003] Currently, the post-weld heat treatment of boiler tanks is mainly done manually. During the operation, the tank is first erected on the ground using a hoist, and then the workers wrap the heating belt around the outer wall of the tank one circle at a time. The heating belt is then energized to heat the tank, and after heating is completed, the heating belt is removed from the tank. The process of wrapping and removing the heating belt is very tedious and time-consuming. Each tank requires at least two workers to operate for 0.5 to 1 hour, which seriously affects the production progress. Therefore, it is urgent to improve this process. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model discloses a post-weld heat treatment device for boiler tanks, including a base, two semi-circular cylinders, an opening and closing assembly, a feeding plate, a lead screw, a guide rail, and a feeding motor. The two semi-circular cylinders are respectively mounted on the base in a longitudinal direction via a rotating shaft, and the two semi-circular cylinders are connected on one side by the opening and closing assembly. Each semi-circular cylinder has several electric heating bands on its inner wall. The lead screw is mounted on the base in a horizontal direction with one end extending below the two semi-circular cylinders. The guide rail is mounted parallel to the base on both sides of the lead screw. The feeding plate is mounted on the lead screw and the guide rail in a horizontal direction, and the bottom of the feeding plate is connected to the lead screw and the guide rail via a nut and a slider, respectively. The feeding motor is fixedly mounted on the base and connected to the other end of the lead screw.

[0005] Furthermore, the opening and closing assembly includes an opening and closing motor and two meshing gears. The two gears are respectively coaxially arranged with two rotating shafts. The opening and closing motor is fixedly mounted on the base and is connected to one of the gears for transmission.

[0006] Furthermore, the bottom of the rotating shaft is rotatably connected to the base, the top is rotatably connected to one end of the crossbeam, and the other end of the crossbeam is fixedly connected to the base via a longitudinal beam.

[0007] Compared with the prior art, the beneficial effects of this utility model are:

[0008] This invention uses a feeding motor to drive a lead screw to rotate, feeding the boiler tank, which is standing on a feeding plate, into the interior of two semi-circular cylinders. The opening and closing assembly closes the two semi-circular cylinders into a complete cylindrical shape, allowing the electric heating belt to wrap around and heat the outer wall of the tank. After heating is complete, the two semi-circular cylinders open, and the feeding plate removes the tank. Throughout the process, workers only need to hoist the tank, without needing to wrap or disassemble the electric heating belt, thus saving a lot of time and labor costs and significantly improving production efficiency. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a side view of the overall structure of this utility model;

[0011] Figure 2 This is a partial top view of the structure of this utility model;

[0012] Figure 3 This is a schematic diagram of the internal structure of the semi-circular cylinder in this utility model.

[0013] Figure label:

[0014] 1-Base, 2-Semi-circular cylinder, 3-Feeding plate, 4-Lead screw, 5-Guide rail, 6-Feeding motor, 7-Rotating shaft, 8-Electric heating belt, 9-Lead screw nut, 10-Slider, 11-Opening and closing motor, 12-Gear, 13-Crossbeam, 14-Longitudinal beam. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0017] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figure 1-3 As shown, the boiler tank post-weld heat treatment device in this embodiment includes a base 1, two semi-circular cylinders 2, an opening and closing assembly, a feeding plate 3, a lead screw 4, a guide rail 5, and a feeding motor 6. The two semi-circular cylinders 2 are respectively mounted on the base 1 in a longitudinal direction via a rotating shaft 7, and the two semi-circular cylinders 2 are connected on one side by the opening and closing assembly. Each semi-circular cylinder 2 has several electric heating bands 8 on its inner wall. The lead screw 4 is mounted on the base 1 in a horizontal direction and one end extends into the lower part of the two semi-circular cylinders 2.

[0019] The guide rail 5 is arranged parallel to the base 1 on both sides of the lead screw 4. The feeding plate 3 is arranged horizontally above the lead screw 4 and the guide rail 5. The bottom of the feeding plate 3 is connected to the lead screw 4 and the guide rail 5 through the lead screw nut 9 and the slider 10 respectively. The feeding motor 6 is fixedly arranged on the base 1 and connected to the other end of the lead screw 4.

[0020] During operation, the feeding motor 6 drives the lead screw 4 to rotate, which in turn drives the feeding plate 3 to move back and forth along the guide rail 5 under the transmission cooperation of the lead screw nut 9, so as to send the boiler tank standing on the feeding plate 3 into or out between the two semi-circular cylinders 2.

[0021] The opening and closing assembly includes an opening and closing motor 11 and two meshing gears 12. The two gears 12 are coaxially arranged with two rotating shafts 7 respectively. The opening and closing motor 11 is fixedly mounted on the base 1 and is connected to one of the gears 12 for transmission.

[0022] The bottom of the rotating shaft 7 is rotatably connected to the base 1, and the top is rotatably connected to one end of the crossbeam 13. The other end of the crossbeam 13 is fixedly connected to the base 1 through the longitudinal beam 14.

[0023] The opening and closing motor 11 drives one of the gears 12 to rotate, which in turn drives the two rotating shafts 7 to rotate relative to each other through the meshing of the other gear 12, thereby causing the two semi-circular cylinders 2 to open and close. After the boiler tank is moved between the two semi-circular cylinders 2, the two semi-circular cylinders 2 close together to form a complete cylinder under the drive of the opening and closing motor 11, so that the electric heating belt 8 wraps around the outer wall of the tank and heats it. The electric heating belt 8 is connected to the induction heating equipment through a power line.

[0024] After heating is completed, the two semi-circular cylinders 2 open under the drive of the opening and closing motor 11, the feeding plate 3 moves the tank out, and the staff hoists down the heated tank and hoists on the new tank to be heated; the whole process does not require wrapping or disassembling the electric heating belt, thus saving a lot of time and labor costs and significantly improving production efficiency.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. A heat treatment device for boiler tank after welding, characterized in that: The device includes a base, two semi-circular cylinders, an opening and closing assembly, a feeding plate, a lead screw, a guide rail, and a feeding motor. The two semi-circular cylinders are respectively mounted on the base in a longitudinal direction via a rotating shaft, and are connected on one side by the opening and closing assembly. Each semi-circular cylinder has several electric heating bands on its inner wall. The lead screw is mounted on the base in a horizontal direction with one end extending below the two semi-circular cylinders. The guide rail is mounted parallel to the base on both sides of the lead screw. The feeding plate is mounted in a horizontal direction above the lead screw and the guide rail, and the bottom of the feeding plate is connected to the lead screw and the guide rail via a nut and a slider, respectively. The feeding motor is fixedly mounted on the base and is connected to the other end of the lead screw.

2. The boiler tank post-weld heat treatment device according to claim 1, characterized in that: The opening and closing assembly includes an opening and closing motor and two meshing gears. The two gears are respectively coaxially arranged with two rotating shafts. The opening and closing motor is fixedly mounted on the base and is connected to one of the gears for transmission.

3. The boiler tank post-weld heat treatment device according to claim 1, characterized in that: The bottom of the rotating shaft is rotatably connected to the base, and the top is rotatably connected to one end of the crossbeam. The other end of the crossbeam is fixedly connected to the base through the longitudinal beam.

Images