Welding auxiliary device

Abstract

The utility model discloses an auxiliary welding device. The technical problem that an existing device for preheating a pipeline welded junction is inconvenient to disassemble and assemble is solved. The welding auxiliary device comprises two heat preservation plates and a heating assembly, the two heat preservation plates are detachably connected and can define a pipe shape, and the two heat preservation plates are each provided with a heat preservation layer. The heating assemblies are arranged on the inner sides of the two heat preservation plates. The device can be quickly disassembled and assembled on a pipeline, and the mounting efficiency is high.

Description

Technical Field

[0001] This application belongs to the technical field of thermal insulation equipment, and particularly relates to a welding auxiliary device. Background Art

[0002] High-temperature and high-pressure pipelines mostly use special alloys to make pipes. In the welding operation of such special alloy pipes, the weld position needs to be preheated before the operation, and the weld needs to be tempered again after the operation. Please refer to Figure 2 , in daily actual operations, iron wires are often used to fix the heater wire group and the thermal insulation material to preheat the weld position. The materials are convenient to obtain, but using iron wires to fix the heater wire group has the hidden danger of falling off and is not convenient to disassemble and assemble, resulting in low operation efficiency. Summary of the Invention

[0003] To solve the technical problem that the device for preheating the pipe weld is not convenient to disassemble and assemble at present, this application provides a welding auxiliary device.

[0004] In the first aspect of this application, a welding auxiliary device is provided, including:

[0005] Two thermal insulation boards, the two thermal insulation boards are detachably connected and can be enclosed into a tubular shape, and both of the two thermal insulation boards are provided with thermal insulation layers;

[0006] A heating component, and the heating component is arranged on the inner sides of the two thermal insulation boards.

[0007] In some embodiments, one end of one thermal insulation board is hinged to one end of the other thermal insulation board, and the other ends of the two thermal insulation boards are connected by a connecting piece.

[0008] In some embodiments, a connecting block is arranged on the outer side of the unhinged end of the thermal insulation board, and a connecting hole is arranged on the connecting block.

[0009] In some embodiments, the connecting piece is a bolt, and internal threads matching the bolt are arranged in both of the two connecting holes.

[0010] In some embodiments, the heating component includes a first heating wire and a second heating wire, and the first heating wire and the second heating wire are respectively arranged on the inner sides of the two thermal insulation boards.

[0011] In some embodiments, the thermal insulation layer is arranged between the thermal insulation board and the heating component.

[0012] In some embodiments, the welding auxiliary device further includes a backing plate, and the heating component is arranged between the backing plate and the thermal insulation board.

[0013] In some embodiments, the backing plate is made of metal.

[0014] In some embodiments, the heat preservation board is a flexible board.

[0015] In some embodiments, a handle is provided on the outside of at least one of the heat preservation boards.

[0016] According to the welding auxiliary device provided by one or more embodiments of the present application, a tubular shape is formed by enclosing two heat preservation boards. After the two heat preservation boards are connected, it is equivalent to being sleeved at the pipe weld to be welded. A heating component is provided on the inner side of the heat preservation board. After the heating component is powered on, the pipe weld to be welded can be heated. The heat preservation layer can be used to keep the pipe weld covered by the two heat preservation boards warm. On the one hand, it can reduce heat loss, and on the other hand, it is beneficial to the uniform heating of the pipe weld. After the preheating is completed, the two heat preservation boards can be removed from the pipe weld to be welded. Compared with the prior art, the operator only needs to connect the two heat preservation boards, and can quickly sleeve them at the pipe weld to be welded, and the disassembly is convenient, which can greatly improve the disassembly and assembly efficiency. The heat preservation layer is directly arranged on the heat preservation board, and the heat preservation board can only protect the heat preservation layer. Compared with the repeated use of iron wire fixation in the prior art, the heat preservation layer of the present application is not easily damaged and has a longer service life. Description of the Drawings

[0017] Figure 1 The structural schematic diagram of the welding auxiliary device in one or more embodiments of the present application is shown.

[0018] Figure 2 The structural schematic diagram of the heater wire group and the pipe in the background art is shown.

[0019] Description of the reference numerals: 1 - heat preservation board, 2 - heat preservation layer, 3 - first heating wire, 4 - second heating wire, 5 - connection block, 6 - bolt, 7 - handle. Detailed Embodiments

[0020] In order to enable those skilled in the art in the technical field to which the present application belongs to understand the present application more clearly, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0021] Please refer to Figure 1 , in the first aspect embodiment of the present application, a welding auxiliary device is provided, including two heat preservation boards 1 and a heating component. The two heat preservation boards 1 are detachably connected and can be enclosed in a tubular shape. Heat preservation layers 2 are provided on both of the two heat preservation boards 1; heating components are provided on the inner sides of the two heat preservation boards 1.

[0022] Please refer to Figure 1 , two insulation boards 1 can be enclosed to form a tubular shape. That is, after placing the insulation board 1 at the pipe weld to be welded, after the two insulation boards 1 are connected, it is equivalent to being sleeved at the pipe weld to be welded. A heating component is arranged on the inner side of the insulation board 1. After the heating component is powered on, it can heat the pipe weld to be welded. The heat insulation layer 2 can be used to insulate the pipe weld covered by the two insulation boards 1. On the one hand, it can reduce heat loss, and on the other hand, it is beneficial to the uniform heating of the pipe weld. After the preheating is completed, the two insulation boards 1 can be removed from the pipe weld to be welded. Compared with the prior art, the operator only needs to connect the two insulation boards 1, which can be quickly sleeved at the pipe weld to be welded, and the disassembly is convenient, which can greatly improve the disassembly and assembly efficiency. The heat insulation layer 2 is directly arranged on the insulation board 1, and the insulation board 1 can only protect the heat insulation layer 2. Compared with repeatedly using iron wires to fix in the prior art, the heat insulation layer 2 of this application is not easily damaged and has a longer service life.

[0023] In some embodiments, one end of one insulation board 1 is hinged to one end of the other insulation board 1, and the other ends of the two insulation boards 1 are connected by a connecting piece.

[0024] The two insulation boards 1 are hinged to facilitate the operator to carry the welding auxiliary device. Of course, it can also reduce the time required to connect the two insulation boards 1 during the heating operation of the pipe weld and improve the operation efficiency. In some embodiments, the connecting piece can be a buckle, and the other ends of the two insulation boards 1 are connected by a snap connection; in some embodiments, the connecting piece can be a magnet. A magnet is arranged at the end of one insulation board 1, and the end of the other insulation board 1 is provided with a magnetic part, such as a magnet or an iron sheet. The two insulation boards 1 can be connected and enclosed in a tubular shape by magnetic attraction.

[0025] In some embodiments, a connecting block 5 is arranged on the outer side of the unhinged end of the insulation board 1, and a connecting hole is arranged on the connecting block 5.

[0026] Considering that the pipes to be heated have different diameter specifications, a connecting block 5 is arranged on the outer wall of one end of the insulation board 1, and a connecting hole is arranged on the connecting block 5. The two connecting holes can be connected by a connecting piece. By changing the length of the connecting piece between the two connecting holes, the welding auxiliary device can be adapted to pipes of more specifications. For example, the connecting piece can be a chain, and the chain can be passed through the two connecting holes and knotted to complete the connection of the two insulation boards 1. Of course, please refer to Figure 1 , in some embodiments, the connecting piece is a bolt 6, and internal threads matching the bolt 6 are arranged in both connecting holes. The connection method of screwing the bolt 6 with the internal threads in the connecting holes is tighter, and the welding auxiliary device is not easily displaced relative to the pipe weld.

[0027] When the heat preservation board 1 is an arc-shaped board made of a hard material, in order to ensure the heating and heat preservation effects at the pipe weld, the range of pipe sizes adapted by a single welding auxiliary device is not large. Therefore, in some embodiments, the heat preservation board 1 is a flexible board, that is, the heat preservation board 1 can be arranged around the pipe to be heated. Not only can it adapt to more pipe sizes, but the heating component will also fit the pipe to be heated better, with higher heating efficiency and better heat preservation effect. For example, the heat preservation board 1 can be made of glass wool, which is not only soft but also has a certain heat preservation effect, and the heating component can be directly sewn on the heat preservation cotton.

[0028] The heating component includes a first heating wire 3 and a second heating wire 4, and the first heating wire 3 and the second heating wire 4 are respectively arranged on the inner sides of the two heat preservation boards 1.

[0029] That is, the heating components on the two heat preservation boards 1 are relatively independent. It can be understood that when the two heat preservation boards 1 are installed on the pipe to be heated, no matter how the two heat preservation boards 1 are opened and closed, the influence on the heating components on the two heating boards is relatively small, and it is not easy to occur the situation that the heating components are damaged due to mutual pulling between the heating components. At the same time, when the first heating wire 3 or the second heating wire 4 is damaged, only the corresponding heating wire needs to be replaced, and there is no need to replace the entire heating component, further reducing the use cost of the welding auxiliary decoration. Of course, it should be noted that the first heating wire 3 and the second heating wire 4 are respectively completely wound around the corresponding heat preservation board 1 to increase the heating area of the heating wire and improve the heating efficiency.

[0030] Of course, in order to further make the heating effect of the heating wire on the pipe weld more uniform, the welding auxiliary device further includes a backing plate, and the heating component is arranged between the backing plate and the heat preservation board 1. The backing plate is made of metal. Specifically, the backing plate is made of a metal material with good thermal conductivity, so that the temperature generated by the heating component can be transferred to the pipe to be heated more evenly after being conducted by the backing plate.

[0031] In some embodiments, the heat preservation layer 2 is arranged between the heat preservation board 1 and the heating component. On the one hand, it provides a good heat preservation effect, and on the other hand, it can reduce the heat transfer to the heat preservation board 1 to avoid scalding the operating personnel and improve the safety of the operation. Of course, in some embodiments, at least one handle 7 is provided on the outside of the heat preservation board 1. During the process of removing the welding auxiliary device, the operating personnel hold the handle 7 to avoid direct contact with the heat preservation board 1 to reduce the risk of being scalded. At the same time, holding the handle 7 is also convenient for the operating personnel to move the welding auxiliary device.

[0032] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include contact between the first and second features through additional features therebetween rather than direct contact. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0033] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.

[0034] In this application, unless otherwise clearly specified or limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In addition, in this application, the descriptions such as "first", "second", etc. are only for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more unless otherwise specifically limited.

[0036] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this application, and the scope of this application is defined by the claims and their equivalents.

Claims

1. A welding auxiliary device, characterized in that: include: Two insulation boards, the two insulation boards are detachably connected and can be enclosed in a tubular shape, and both insulation boards are provided with insulation layers; A heating component is provided on the inner sides of the two insulation boards.

2. The welding auxiliary device according to claim 1, characterized in that: One end of one of the insulation boards is hinged to one end of another insulation board, and the other ends of the two insulation boards are connected via a connecting piece.

3. The welding auxiliary device according to claim 2, characterized in that: A connection block is arranged on the outer side of the unhinged end of the heat preservation board, and a connection hole is arranged on the connection block.

4. The welding auxiliary device according to claim 3, characterized in that: The connecting piece is a bolt, and the two connecting holes are both provided with internal threads matching the bolts.

5. The welding auxiliary device according to claim 1, characterized in that: The heating assembly comprises a first heating wire and a second heating wire, wherein the first heating wire and the second heating wire are respectively arranged on the inner sides of the two insulation plates.

6. The welding auxiliary device according to claim 1, characterized in that: The heat-insulating layer is arranged between the heat-insulating plate and the heating assembly.

7. The welding auxiliary device according to claim 1, characterized in that: The welding auxiliary device also includes a backing plate, and the heating component is arranged between the backing plate and the insulation plate.

8. The welding auxiliary device according to claim 7, characterized in that: The backing plate is made of metal.

9. The welding auxiliary device according to claim 1, characterized in that: The thermal insulation board is a flexible board.

10. The welding auxiliary device according to claim 1, characterized in that: At least one of the heat-insulating panels is provided with a handle on the outside.

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