Self-adaptive pipeline heat treatment device

Abstract

The utility model discloses a self-adaptive pipeline heat treatment device which comprises a base, two semicircular positioning grooves, a heating belt, an air bag, an inflation and deflation pump and a driving assembly, the driving assembly is arranged on the base, and the two semicircular positioning grooves are symmetrically formed in the base and are respectively in transmission connection with the driving assembly; the inner wall of each semicircular positioning groove is provided with an air bag, the outer wall of each air bag is provided with a plurality of heating belts at intervals, the outer wall of each semicircular positioning groove is provided with an inflation and deflation pump, and the inflation and deflation pumps are connected with the air bags through air pipes. According to the pipeline heating device, the two semicircular positioning grooves are driven by the driving assembly to wrap the pipeline, the heating belt is tightly attached to the outer wall of the pipeline under the action of the air bag, so that the pipeline is heated, different inflation degrees of the air bag can adapt to pipelines with different diameters, the application range of the pipeline diameter is wide, and the pipeline heating device is convenient to use. And the universality of the heat treatment device is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline heat treatment technology, and in particular to an adaptive pipeline heat treatment device. Background Technology

[0002] In the welding process of metal pipelines such as oil pipelines, gas pipelines, and boilers, pre-weld and post-weld heat treatments are required. The purpose of pre-weld heat treatment is to reduce the temperature difference between the weld metal and the base metal, reduce stress concentration, prevent crack formation, and improve welding quality and performance. The purpose of post-weld heat treatment is to relax residual welding stress, stabilize the shape and size of the structure, improve the performance of the base metal and weld joint, enhance resistance to stress corrosion, and further release harmful gases in the weld metal, especially hydrogen, to prevent delayed cracking.

[0003] In existing pipeline heating equipment, such as the tool for pipeline welding heat treatment disclosed in patent CN116987876A, a first push rod motor drives a lifting plate to move down. The lifting plate then drives a first positioning rod to move down through a lifting rod and a ring, thereby causing the conductive column to extend and contact the fixed coil. This makes the fixed coil and the movable coil conduction to form a complete heating coil, thereby uniformly heating the pipeline.

[0004] However, this device is limited by the size and curvature of the fixed coil and the movable coil, and can only be used to heat pipes of a specific size. When the pipe diameter is too large, the fixed coil and the movable coil cannot be wrapped around the outer wall of the pipe, and when the pipe diameter is too large, the fixed coil and the movable coil cannot make contact with the pipe, and therefore cannot heat the pipe.

[0005] Therefore, existing pipe heating equipment cannot adequately meet the heating needs of pipes of various sizes, has poor versatility, and thus still needs improvement. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model discloses an adaptive pipeline heat treatment device, including a base, two semi-circular positioning slots, heating belts, air bags, inflation and deflation pumps, and a drive assembly. The drive assembly is mounted on the base, and the two semi-circular positioning slots are symmetrically arranged on the base and are respectively connected to the drive assembly. The drive assembly can drive the two semi-circular positioning slots to open and close. Each semi-circular positioning slot has an air bag on its inner wall, and each air bag has multiple heating belts spaced apart on its outer wall. Each semi-circular positioning slot has an inflation and deflation pump on its outer wall, and the inflation and deflation pumps are connected to the air bags through air pipes.

[0007] Furthermore, the drive assembly includes a drive motor, gears, and two rotating shafts. The drive motor is fixedly mounted at one end of the base. The two rotating shafts are symmetrically mounted on the base in the horizontal direction and rotate rotatably via bearing seats. The bottoms of the two semi-circular positioning slots are respectively fixedly connected to the two rotating shafts via connecting blocks. Each end of the two rotating shafts is provided with a set of meshing gears, and the drive motor is connected to one of the gears for transmission.

[0008] Furthermore, each of the airbags is connected to a pressure relief valve.

[0009] Furthermore, a roller bracket is provided at each end of the base.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention uses a drive assembly to move two semi-circular positioning grooves to wrap around the pipe, and under the action of the airbag, the heating band is tightly attached to the outer wall of the pipe, thereby heating the pipe. Different inflation levels of the airbag can adapt to pipes of different diameters, thus improving the versatility of the heat treatment device. Attached Figure Description

[0012] 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.

[0013] Figure 1 This is a side view of the present invention.

[0014] Figure 2 This is a schematic diagram of a partial end face structure of the present invention.

[0015] Reference numerals:

[0016] 1-Base, 2-Semi-circular positioning groove, 3-Heating belt, 4-Airbag, 5-Inflation / depression pump, 6-Drive motor, 7-Gear, 8-Rotating shaft, 9-Bearing seat, 10-Connecting block, 11-Pressure relief valve, 12-Roller frame, 13-Pipeline. Detailed Implementation

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] 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.

[0019] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0020] 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.

[0021] like Figure 1-2 As shown, the adaptive pipeline heat treatment device in this embodiment includes a base 1, two semi-circular positioning grooves 2, a heating belt 3, an air bag 4, an inflation / deflation pump 5, and a drive assembly. The drive assembly is mounted on the base 1, and the two semi-circular positioning grooves 2 are symmetrically arranged on the base 1 and are respectively connected to the drive assembly for transmission.

[0022] The drive assembly includes a drive motor 6, a gear 7, and two rotating shafts 8. The drive motor 6 is fixedly mounted at one end of the base 1. The two rotating shafts 8 are symmetrically mounted on the base 2 in the horizontal direction via bearing seats 9. The bottoms of the two semi-circular positioning grooves 3 are fixedly connected to the two rotating shafts 8 via connecting blocks 10. Each end of the two rotating shafts 8 is provided with a set of meshing gears 7. The drive motor 6 is connected to one of the gears 7 for transmission.

[0023] The drive motor 6 drives one of the gears 7 to rotate, and the meshing action of the gear 7 drives the two rotating shafts 8 to rotate relative to each other, thereby realizing the opening and closing of the two semi-circular positioning grooves 2.

[0024] Each semi-circular positioning groove 2 has an airbag 4 on its inner wall, and multiple heating strips 3 are spaced apart on the outer wall of each airbag 4. Each semi-circular positioning groove 2 has an inflation / deflation pump 5 on its outer wall, and the inflation / deflation pump 5 is connected to the airbag 4 through an air pipe. Each airbag 4 is connected to a pressure relief valve 11 to prevent the airbag 4 from expanding and rupturing due to heat.

[0025] A roller frame 12 is provided at each end of the base 1 to support the two ends of the pipe.

[0026] like Figure 2 As shown, when the heat treatment device is in use, the drive motor 6 drives the two semi-circular positioning grooves 2 to rotate, so that they wrap around the outside of the pipe 13. Then, the air bag 4 is inflated by the air pump 5. The air bag 4 squeezes the heating belt 3 onto the outer wall of the pipe 13. Then, the induction heating device is used to energize the heating belt 3 to heat it up, thereby heat-treating the pipe 13.

[0027] Airbag 4 can be made of special PA66 airbag cloth, which contains glass fiber or copper salt masterbatch. Its heat resistance temperature can reach 260℃, while the heat treatment temperature required for general thin-walled pipes is 120-180℃, which can fully meet the usage requirements.

[0028] Because the airbag 4 is made of flexible material, its expansion degree varies depending on the inflation degree, ensuring that the airbag 4 can always press the heating band 3 against the outer wall of the pipe. Therefore, it can adapt to pipes of various diameters, has a wide range of pipe diameter adaptability, and thus improves the versatility of the heat treatment device.

[0029] 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. An adaptive pipeline heat treatment device, characterized in that: The device includes a base, two semi-circular positioning slots, heating bands, airbags, inflation / deflation pumps, and a drive assembly. The drive assembly is mounted on the base. The two semi-circular positioning slots are symmetrically arranged on the base and are respectively connected to the drive assembly. The drive assembly can drive the two semi-circular positioning slots to open and close. Each semi-circular positioning slot has an airbag on its inner wall. Each airbag has multiple heating bands spaced apart on its outer wall. Each semi-circular positioning slot has an inflation / deflation pump on its outer wall, and the inflation / deflation pump is connected to the airbag through an air pipe.

2. The adaptive pipeline heat treatment device according to claim 1, characterized in that: The drive assembly includes a drive motor, gears, and two rotating shafts. The drive motor is fixedly mounted at one end of the base. The two rotating shafts are symmetrically mounted on the base in the horizontal direction and rotate rotatably via bearing seats. The bottoms of the two semi-circular positioning slots are fixedly connected to the two rotating shafts via connecting blocks. Each end of the two rotating shafts is provided with a set of meshing gears. The drive motor is connected to one of the gears in a transmission connection.

3. The adaptive pipeline heat treatment device according to claim 1, characterized in that: Each of the airbags is equipped with a pressure relief valve.

4. The adaptive pipeline heat treatment device according to claim 1, characterized in that: The base has a roller frame at each end.

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