Electric heating tool for assisting heating of welding seam of pipe joint

Abstract

The utility model relates to the field of steel pipe welding production, in particular to an electric heating tool for assisting in heating a welding seam of a pipe joint. The device comprises a shell, a containing groove, a containing piece, a hinged hinge, a fixing rod and magnetic steel. The number of the shells is two, the two shells are arranged side by side in parallel, the containing grooves are formed in the corresponding faces of the two shells, the number of the containing pieces is one set, one set of containing pieces are arranged between the two shells side by side in parallel, every two adjacent containing pieces are hinged through the hinge hinges, and the containing pieces are arranged in the containing grooves. The at least two fixing rods are installed at the top ends of the two containing pieces adjacent to the two shells, and the at least two pieces of magnetic steel are fixedly installed at the two ends of the fixing rods.

Description

Technical Field

[0001] The utility model relates to the field of steel pipe welding production, in particular to an electric heating tool for assisting pipe joint weld heating. Background Art

[0002] In the manufacturing industry, preheating and heat preservation treatment are crucial in the production process of steel pipes, especially during welding and hot working. Preheating can reduce the stress and deformation generated during welding. When steel pipes are suddenly exposed to high temperatures during welding, thermal stress and thermal deformation may occur, which may cause cracks or poor deformation at the weld. By preheating, the temperature of the steel pipe can be homogenized, thereby reducing the occurrence of these problems. Preheating can improve the quality of welding and make the welding process more stable and controllable. Under preheated conditions, the fluidity of the welding material is better and the cooling rate between the weld metals is slower, which helps to form a uniform and stable weld.

[0003] However, the existing steel pipe heating devices often encounter the following problems during use:

[0004] (1) When using electric heaters for preheating, common electric heaters are difficult to fit on workpieces with curved lines. Due to the different sizes of workpieces, the electric heaters need to be installed for each workpiece for preheating, and the whole process is time-consuming and labor-intensive. Especially on large workpieces, the winding and fixing of the electric heaters requires a lot of manpower and material resources, and the tooling cannot be bent, which will lead to uneven heating and insufficient utilization of heat when heating the steel pipe welds.

[0005] (2) If a flexible electric heating sheet is used to cover the tube body for heating, it is inconvenient to fix and remove it when the position needs to be adjusted. Utility Model Content

[0006] The main purpose of the utility model is to provide an electric heating tool for auxiliary pipe joint weld heating, so as to effectively solve the problem mentioned in the background technology that the existing electric heater is difficult to fit the workpiece with curved lines.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] An electric heating tool for assisting pipe joint weld heating, comprising:

[0009] A shell, wherein two shells are provided and the two shells are placed side by side and in parallel;

[0010] An accommodating groove, the accommodating groove is opened on corresponding surfaces of the two shells;

[0011] A container, wherein the container is provided in a group, and the container is placed side by side and in parallel between the two shells;

[0012] A hinged joint, wherein the hinged joint hinges every two adjacent accommodating members;

[0013] A fixing rod, at least two of which are mounted on top ends of two of the receiving parts adjacent to the two shells;

[0014] Magnets, at least two of which are fixedly mounted on two ends of the fixing rod.

[0015] Also includes:

[0016] A handle, wherein the handle is fixedly disposed on the top of any two accommodating parts;

[0017] Thermal insulation cotton, the thermal insulation cotton is placed in a group of the receiving parts.

[0018] The two shells and the two adjacent accommodating components are hingedly connected via the hinge joint.

[0019] The distance between every two accommodating parts is the same.

[0020] A group of the accommodating parts have a bottom with a notch.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] (1) The utility model designs a bendable auxiliary electric heating fixture. The fixture is connected by hinges and can be adjusted according to the arc size of the pipe body and the on-site working conditions. It can be bent, folded, and fit the pipe body weld. The fixture is used in conjunction with an electric heating plate to make the heating operation of the arc weld more convenient. It has a wide range of applications and high thermal efficiency. It solves the problem that arc welds are difficult to heat electrically and effectively improves production efficiency.

[0023] (2) The tooling can be used flexibly and can be adjusted according to the curvature of the pipe and the on-site working conditions. It can be installed and disassembled at any time according to the real-time situation through magnetic steel adsorption, which is convenient for construction and can safely and efficiently realize weld preheating and insulation operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0025] Figure 1 It is a schematic diagram of the overall appearance of the utility model.

[0026] Figure 2 It is a top view of the utility model.

[0027] Figure 3It is a schematic diagram of the main body of the utility model.

[0028] Numbers in the figure: 1, shell; 2, accommodating groove; 3, accommodating part; 4, hinge joint; 5, fixing rod; 6, magnetic steel; 7, handle; 8, thermal insulation cotton. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "set", "connected", and "connected" should be understood in a broad sense, 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-3 As shown, an electric heating tool for auxiliary pipe joint weld heating includes: a shell 1, a receiving groove 2, a receiving part 3, a hinge joint 4, a fixing rod 5, and a magnetic steel 6. Two shells 1 are provided, and the two shells 1 are placed side by side in parallel. The receiving groove 2 is opened on the corresponding surfaces of the two shells 1. A group of receiving parts 3 is provided, and a group of receiving parts 3 is placed side by side in parallel between the two shells 1. The hinge joint 4 hinges every two adjacent receiving parts 3. At least two fixing rods 5 are installed on the top of the two receiving parts 3 adjacent to the two shells 1. At least two magnetic steels 6 are fixedly installed on the two ends of the fixing rods 5. The position of the fixing rod 5 is as close to the edge of the shell 1 as possible, which can expand the stability of the magnetic steel 6 when fixed and adsorbed. In use, the fixing rod 5 is set close to the edge, which can automatically drive the overall bending and fitting while adsorbing the pipe body, without manual adjustment, to improve convenience.

[0032] In this embodiment, Figure 2-3As shown, two fixing rods 5 are provided, two housings 1 and two adjacent accommodating parts 3 are connected by hinged joints 4, the spacing between every two accommodating parts 3 is the same, and the same spacing can effectively ensure the consistency of the size of the hinged joints 4, and a group of accommodating parts 3 are provided with a notch at the bottom, and the notch can facilitate the electric heating plate to enter the accommodating part 3 through the notch at the bottom for fixing. The heat preservation cotton 8 is placed in a group of accommodating parts 3, and the setting of the heat preservation cotton 8 can effectively reduce heat loss and improve preheating efficiency.

[0033] It should be noted that the electric heating tool designed by the utility model to assist in heating the weld of a pipe joint, when in use, first insert the two ends of the electric heating plate into the receiving grooves 2 of the two shells 1, and then insert the main body of the electric heating plate into the inside of the receiving part 3 using the notch of the receiving part 3, the thermal insulation cotton 8 will provide compression for the inserted electric heating plate to make it more close to the pipe wall to ensure the uniformity of the heating process, and finally manually hold the handle 7, put the whole device into the steel pipe to cover it, the magnetic steel 6 will automatically absorb the pipe body, fix the whole device, and then it can be heated. At this point, the use process ends.

[0034] Although the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric heating tool for auxiliary pipe joint weld heating, characterized in that: include: A shell (1), wherein two shells (1) are provided, and the two shells (1) are placed side by side and in parallel; A containing groove (2), the containing groove (2) being opened on corresponding surfaces of the two shells (1); A accommodating member (3), wherein a group of the accommodating members (3) is provided, and a group of the accommodating members (3) is placed side by side and in parallel between the two shells (1); A hinged joint (4), wherein the hinged joint (4) hinges every two adjacent accommodating parts (3); fixing rods (5), at least two of the fixing rods (5) being mounted on top ends of two of the receiving parts (3) adjacent to the two shells (1); Magnetic steel (6), at least two of the magnetic steel (6) are fixedly mounted on both ends of the fixing rod (5).

2. The electric heating tool for auxiliary pipe joint weld heating according to claim 1, characterized in that: Also includes: A handle (7), wherein the handle (7) is fixedly disposed on the top ends of any two accommodating parts (3); Thermal insulation cotton (8), the thermal insulation cotton (8) is placed in a group of the receiving parts (3).

3. The electric heating tool for auxiliary pipe joint weld heating according to claim 1, characterized in that: The two shells (1) and the two adjacent receiving parts (3) are hingedly connected via the hinge joint (4).

4. The electric heating tool for auxiliary pipe joint weld heating according to claim 1, characterized in that: The distance between every two accommodating parts (3) is the same.

5. The electric heating tool for auxiliary pipe joint weld heating according to claim 1, characterized in that: A group of the accommodating parts (3) are each provided with a notch at the bottom.

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