A magnetic auxiliary heating device for power cable welding

Abstract

The present application relates to a magnetic auxiliary heating device for power cable welding, which includes: a first arc flexible heating sheet, a first adsorption member, a second arc flexible heating sheet, a second adsorption member and a telescopic supporting member; when heat conduction is required, the welds of the two welded parts to be welded are butt-jointed; then the first arc flexible heating sheet and the second arc flexible heating sheet are brought into contact with the welded part, and then the second adsorption member is adsorbed and connected to the first adsorption member, so that the first arc flexible heating sheet and the second arc flexible heating sheet surround the welded part and the device is fixed on the welded part; then the first arc flexible heating sheet and the second arc flexible heating sheet are powered on for preheating, and the magnetic adsorption is used to facilitate installation and disassembly. In addition, when it is necessary to apply to welded parts of different sizes, the length of the telescopic supporting member is adjusted to change the shape of the first arc flexible heating sheet and the second arc flexible heating sheet, so that the welded part is evenly heated.

Description

Technical Field

[0001] The present application relates to the field of welding processing technology, and in particular to a magnetic auxiliary heating device for power supply cable welding. Background Art

[0002] Welding is generally categorized as fusion welding, brazing, and resistance welding (also known as pressure welding). Welding involves applying heat or pressure, or both, to create an atomic bond between the welded parts, either by filling with metal or by leveraging the weld itself. Heating melts the metal and creates a connection, while pressure ensures a tight weld.

[0003] To improve welding quality, preheating is required before welding. Preheating reduces the cooling rate of the weld joint, facilitating the release of diffused hydrogen from the weld metal and preventing hydrogen-induced cracking. Preheating also prolongs the cooling time of the heat-affected zone (800-500°C) and reduces the constraint of the weld structure, particularly in fillet joints. As the preheat temperature increases, the crack rate decreases.

[0004] In some existing technologies, the clamping point contact area of ​​the welding auxiliary preheating device is small, resulting in uneven heating and easily causing large residual stress inside the material, thereby affecting the improvement of joint performance and affecting the welding quality; what is even more inconvenient is that the fixing structure of the device used to fix on the welded part is complex, resulting in inconvenient disassembly and installation, and will cause damage to the outer surface of the welded part. Summary of the Invention

[0005] An embodiment of the present application provides a magnetic auxiliary heating device for power supply cable welding to solve the problems of uneven heating and inconvenient disassembly of welding auxiliary preheating devices in related technologies.

[0006] In a first aspect, a magnetic auxiliary heating device for power cable welding is provided, comprising:

[0007] A first arc-shaped flexible heating sheet, the outer side of which is correspondingly connected to a first adsorption member;

[0008] A second arc-shaped flexible heating sheet is disposed opposite to the first arc-shaped flexible heating sheet to enclose a space for accommodating the workpiece to be welded; a second adsorption member is connected to the outer side of the second arc-shaped flexible heating sheet; the upper and lower ends of the second adsorption member are connected to the upper and lower ends of the first adsorption member by magnetic attraction;

[0009] a telescopic supporting member, which is mounted on the first adsorption member and the second adsorption member, one end of the telescopic supporting member is connected to the first arc flexible heating sheet and the second arc flexible heating sheet, and the other end of the telescopic supporting member is passed through the first adsorption member or the second adsorption member;

[0010] When it is necessary to deal with welding parts of different sizes, the telescopic supporting member is extended or contracted to change the shapes of the first arc flexible heating sheet and the second arc flexible heating sheet, thereby adjusting the accommodating space.

[0011] In some embodiments, the first arc flexible heating sheet and the second arc flexible heating sheet both include a flexible arc metal sheet and a plurality of heating tubes; the plurality of heating tubes are distributed along the length direction of the flexible arc metal sheet, and are arranged through the flexible arc metal sheet along the width direction of the flexible arc metal sheet; the heating tubes are externally connected to a power supply device.

[0012] In some embodiments, the first arc-shaped flexible heating sheet and the second arc-shaped flexible heating sheet each further include a T-shaped connecting block, and the T-shaped connecting block is arranged along the width direction of the flexible arc-shaped metal sheet;

[0013] The first adsorption component and the second adsorption component are both provided with connecting guide rails, the connecting guide rails are provided with slide grooves, and the T-shaped connecting blocks are movably arranged in the slide grooves; the first adsorption component or the second adsorption component is provided with a fixing block for fixing to external equipment.

[0014] In some embodiments, the first adsorption member is a steel metal arc block; the second adsorption member is an electromagnet arc block, and a terminal is provided on the electromagnet arc block.

[0015] In some embodiments, the first adsorption member and the second adsorption member both include an aluminum arc block and a bar electromagnet; the upper and lower ends of the aluminum arc block are connected to the bar electromagnet, and the bar electromagnet is provided with a terminal head; when connection is required, the magnetic properties of the bar electromagnet of the first adsorption member and the second adsorption member are opposite; when disassembly is required, the magnetic properties of the bar electromagnet of the first adsorption member and the second adsorption member are the same.

[0016] In some embodiments, the telescopic abutment member includes a threaded rod, a rotating disk, and an abutment seat;

[0017] The first adsorption member and the second adsorption member are both provided with threaded holes, the threaded rod is installed in the threaded hole, and one end is rotatably connected to the supporting seat, and the other end is fixedly connected to the rotating disk; the shape of the supporting surface of the supporting seat is the same as that of the first arc flexible heating plate and the second arc flexible heating plate.

[0018] In some embodiments, a mounting member is provided on the first adsorption member or the second adsorption member, and a temperature sensor is provided on the mounting member.

[0019] In some embodiments, the mounting member includes a support rod and an arc ring, the temperature sensor is provided on the arc ring along its length, and the arc ring is made of high-temperature resistant plastic.

[0020] In some embodiments, the mounting member is provided with a sound alarm device, which is used to emit a warning sound after the detection value of the temperature sensor reaches a set value.

[0021] In a second aspect, a power supply cable welding method is provided, which comprises the following steps:

[0022] Step 1: Provide at least two magnetic auxiliary heating devices for power cable welding;

[0023] Step 2: Butt the welds of the two welded parts to be welded;

[0024] Step 3: Place the first arc flexible heating sheet and the second arc flexible heating sheet in contact with the welding piece, and then connect the second adsorption piece to the first adsorption piece by adsorption, so that the first arc flexible heating sheet and the second arc flexible heating sheet surround the welding piece, and fix the device on the welding piece;

[0025] Step 4: Repeat the above steps to install another device on the weldment, and then energize the first arc flexible heating sheet and the second arc flexible heating sheet for preheating.

[0026] The beneficial effects of the technical solution provided by this application include:

[0027] (1) The embodiment of the present application provides a magnetic auxiliary heating device and a welding method for power supply cable welding, which are used to butt the welds of two welded parts to be welded when heat conduction is required; then the first arc flexible heating sheet and the second arc flexible heating sheet are brought into contact with the welded part, and then the second adsorption member is adsorbed and connected to the first adsorption member, so that the first arc flexible heating sheet and the second arc flexible heating sheet surround the welded part and the device is fixed on the welded part; after repeating the above steps to install another device on the welded part, the first arc flexible heating sheet and the second arc flexible heating sheet are powered on for preheating, thereby utilizing magnetic adsorption to facilitate installation and disassembly.

[0028] (2) When it is necessary to adapt to welding parts of different sizes, the length of the telescopic supporting member is adjusted to change the shapes of the first arc flexible heating sheet and the second arc flexible heating sheet so that the welding parts can be heated evenly.

[0029] (3) The first arc flexible heating sheet and the second arc flexible heating sheet both include a T-shaped connecting block, which is arranged along the width direction of the flexible arc metal sheet; the first adsorption member and the second adsorption member are both provided with a connecting guide rail, and the connecting guide rail is provided with a slide groove. The arrangement of the slide groove and the T-shaped connecting block can facilitate the installation of the first arc flexible heating sheet and the second arc flexible heating sheet, and is convenient for maintenance and replacement.

[0030] (4) The arc ring is made of high temperature resistant plastic. The mounting part is provided with an audible alarm device, which is used to emit a warning sound when the detection value of the temperature sensor reaches the set value; it can remind personnel that the heating temperature has been reached, because the preheating temperature of different metals is different, thereby further enhancing the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 A schematic diagram of a first-perspective view of a magnetic auxiliary heating device for power cable welding provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of a second perspective of the magnetic auxiliary heating device for power cable welding provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of the magnetic auxiliary heating device for power cable welding provided in an embodiment of the present application during welding;

[0035] Figure 4 A schematic diagram of a magnetic auxiliary heating device for power cable welding provided in an embodiment of the present application without a power supply device;

[0036] Figure 5 The first adsorption member provided in the embodiment of the present application is a steel metal arc block; the second adsorption member is a schematic diagram of an electromagnet arc block;

[0037] Figure 6 A schematic diagram showing the connection between the T-shaped connecting block and the telescopic supporting member and the first and second arc-shaped flexible heating sheets provided in an embodiment of the present application from a first perspective;

[0038] Figure 7 A schematic diagram showing the connection between the T-shaped connecting block and the telescopic supporting member and the first and second arc-shaped flexible heating sheets provided in an embodiment of the present application from a second perspective;

[0039] Figure 8 A schematic diagram of the connection between the T-shaped connecting block and the first and second arc-shaped flexible heating sheets provided in an embodiment of the present application;

[0040] Figure 9 A schematic structural diagram of a telescopic supporting member provided in an embodiment of the present application;

[0041] Figure 10 This is a schematic diagram of the structure of the mounting member and temperature sensor provided in an embodiment of the present application.

[0042] In the figure: 1. First arc flexible heating sheet; 2. First adsorption member; 3. Second arc flexible heating sheet; 4. Second adsorption member; 5. Telescopic supporting member; 500. Threaded rod; 501. Rotating disk; 502. Support seat; 6. Temperature sensor; 7. Heating tube; 8. Power supply unit; 9. T-shaped connecting block; 10. Connecting guide rail; 11. Wiring head; 12. Mounting member; 1200. Support rod; 1201. Arc ring. DETAILED DESCRIPTION

[0043] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] The embodiments of the present application provide a magnetic auxiliary heating device and a welding method for power supply cable welding to solve the problems of uneven heating and inconvenient disassembly of welding auxiliary preheating devices in related technologies.

[0045] See also Figures 1-10 A magnetic auxiliary heating device for power cable welding includes: a first arc flexible heating sheet 1, a first adsorption member 2, a second arc flexible heating sheet 3, a second adsorption member 4 and a telescopic supporting member 5.

[0046] A first arc-shaped flexible heating sheet 1, the outer side of which is correspondingly connected to a first adsorption member 2;

[0047] The second arc-shaped flexible heating sheet 3 is arranged opposite to the first arc-shaped flexible heating sheet 1 to enclose a space for accommodating the parts to be welded; the outer side of the second arc-shaped flexible heating sheet 3 is connected to a second adsorption member 4; the upper and lower ends of the second adsorption member 4 are connected to the upper and lower ends of the first adsorption member 2 by magnetic attraction;

[0048] The telescopic supporting member 5 is installed on the first adsorption member 2 and the second adsorption member 4. One end of the telescopic supporting member 5 is connected to the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3, and the other end is passed through the first adsorption member 2 or the second adsorption member 4. When it is necessary to deal with welding parts of different sizes, the telescopic supporting member 5 is extended or contracted to change the shape of the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 and adjust the accommodating space.

[0049] Through the above settings, when heat conduction is required, the welds of the two welded parts to be welded are butt-jointed; then the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 are brought into contact with the welded part, and then the second adsorption part 4 is adsorbed and connected with the first adsorption part 2, so that the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 surround the welded part, and the device is fixed on the welded part; after repeating the above steps to install another device on the welded part, the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 are energized for preheating, thereby utilizing magnetic adsorption to facilitate installation and disassembly.

[0050] In addition, when it is necessary to adapt to welding parts of different sizes, the length of the telescopic supporting member is adjusted to change the shapes of the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 so that the welding parts can be heated evenly.

[0051] refer to Figure 4-Figure 8 In some preferred embodiments, the specific structures of the first arc-shaped flexible heating sheet 1 and the second arc-shaped flexible heating sheet 3 are as follows:

[0052] The first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 both include a flexible arc metal sheet and a plurality of heating tubes 7; the plurality of heating tubes 7 are distributed along the length direction of the flexible arc metal sheet, and are passed through the flexible arc metal sheet along the width direction of the flexible arc metal sheet; the heating tubes 7 are externally connected to a power supply device 8; the flexible arc metal sheet covers the heating tubes 7 for protection, and has a heat-conducting function, and can also change according to the force applied.

[0053] Both the first arc-shaped flexible heating sheet 1 and the second arc-shaped flexible heating sheet 3 further include a T-shaped connecting block 9, which is arranged along the width direction of the flexible arc-shaped metal sheet. The first adsorbent 2 and the second adsorbent 4 are each provided with a connecting guide rail 10, which is provided with a slide groove, and the T-shaped connecting block 9 is movably arranged within the slide groove. The first adsorbent 2 or the second adsorbent 4 is provided with a fixing block for fixing to external equipment. The provision of the slide groove and the T-shaped connecting block 9 facilitates the installation of the first arc-shaped flexible heating sheet 1 and the second arc-shaped flexible heating sheet 3, and facilitates maintenance and replacement.

[0054] In some preferred embodiments, the structural arrangement of the first adsorption member 2 and the second adsorption member 4 can be referred to as follows:

[0055] The first one, reference Figure 4 The first adsorption component 2 is a steel metal arc block; the second adsorption component 4 is an electromagnet arc block, and a terminal 11 is provided on the electromagnet arc block.

[0056] The second one, reference Figure 5The first and second adsorption members 2 and 4 each include an aluminum arc block and a bar-shaped electromagnet. The upper and lower ends of the aluminum arc block are connected to the bar-shaped electromagnet, which is provided with a terminal 11. When connecting, the magnetic properties of the bar-shaped electromagnets of the first and second adsorption members 2 and 4 are opposite; when disassembling, the magnetic properties of the bar-shaped electromagnets of the first and second adsorption members 2 and 4 are the same. Thus, the above structure utilizes the magnetic force generated by the electromagnets to achieve connection or disconnection, avoiding the structural complexity caused by using other locking devices, making the device easier to fix to the welded part.

[0057] In some preferred embodiments, reference Figure 9 , how to change the shapes of the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3, adjust the accommodating space, and set the structure of the telescopic supporting member 5:

[0058] The telescopic supporting member 5 includes a threaded rod 500, a rotating disk 501 and a supporting seat 502; the first adsorption member 2 and the second adsorption member 4 are both provided with threaded holes, the threaded rod 500 is installed in the threaded hole, and one end is rotatably connected to the supporting seat 502, and the other end is fixedly connected to the rotating disk 501; the shape of the supporting surface of the supporting seat 502 is the same as that of the first arc flexible heating plate 1 and the second arc flexible heating plate 3.

[0059] When the shapes of the first arc-shaped flexible heating sheet 1 and the second arc-shaped flexible heating sheet 3 need to be changed, the rotating disk 501 is rotated to displace the threaded rod 500 and move the abutting seat 502 , thereby achieving the purpose of changing the shapes.

[0060] In some preferred embodiments, in order to facilitate the reminder that the temperature has been heated to the set temperature value, the following settings are made:

[0061] A mounting member 12 is provided on the first adsorption member 2 or the second adsorption member 4. The mounting member 12 is provided with a temperature sensor 6. The mounting member 12 comprises a support rod 1200 and an arcuate ring 1201. The arcuate ring 1201 is provided with the temperature sensor 6 along its length. The arcuate ring 1201 is made of high-temperature-resistant plastic. An audible alarm device is provided on the mounting member 12, which is configured to emit a warning sound when the detection value of the temperature sensor 6 reaches a set value.

[0062] Through the above settings, personnel can be reminded that the heating temperature has been reached, because the preheating temperatures of different metals are different, thereby enhancing the welding effect.

[0063] The present application also proposes a power cable welding method, which comprises the following steps:

[0064] Step 1: Provide at least two of the above-mentioned magnetic auxiliary heating devices for power cable welding;

[0065] Step 2: Butt the welds of the two welded parts to be welded;

[0066] Step 3: Place the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 in contact with the welding part, and then adsorb and connect the second adsorption member 4 to the first adsorption member 2, so that the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 surround the welding part, and fix the device on the welding part;

[0067] Step 4: After repeating the above steps to install another device on the welding part, the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 are powered on for preheating.

[0068] Through the above method, when heat conduction is required, the welds of the two welded parts to be welded are butt-jointed; then the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 are brought into contact with the welded part, and then the second adsorption part 4 is adsorbed and connected with the first adsorption part 2, so that the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 surround the welded part, and the device is fixed on the welded part; after repeating the above steps to install another device on the welded part, the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 are energized for preheating, thereby utilizing magnetic adsorption to facilitate installation and disassembly.

[0069] In addition, when it is necessary to adapt to welding parts of different sizes, the length of the telescopic supporting member is adjusted to change the shapes of the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 so that the welding parts can be heated evenly.

[0070] It should be understood that the above method can be performed after the welding part has been fixed. Of course, it is also applicable to the step of placing the welding part on the first adsorption part 2 or the second adsorption part 4 after the first adsorption part 2 or the second adsorption part 4 is fixed. The method of use can be selected according to needs.

[0071] Principles of this application:

[0072] (1) When heat conduction is required, the welds of the two welded parts to be welded are butt-jointed; then the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 are brought into contact with the welded parts, and then the second adsorption member 4 is adsorbed and connected to the first adsorption member 2, so that the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 surround the welded parts, and the device is fixed on the welded parts; after repeating the above steps to install another device on the welded parts, the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 are powered on for preheating, thereby utilizing magnetic adsorption to facilitate installation and disassembly.

[0073] In addition, when it is necessary to adapt to welding parts of different sizes, the length of the telescopic supporting member is adjusted to change the shapes of the first arc flexible heating sheet 1 and the second arc flexible heating sheet 3 so that the welding parts can be heated evenly.

[0074] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A magnetic auxiliary heating device for power cable welding, characterized in that: It includes: A first arc-shaped flexible heating sheet (1), the outer side of which is correspondingly connected to a first adsorption member (2); a second circular arc flexible heating sheet (3) arranged opposite to the first circular arc flexible heating sheet (1) to enclose and form a receiving space for the parts to be welded; The outer side of the second arc-shaped flexible heating sheet (3) is correspondingly connected to a second adsorption member (4); the upper and lower ends of the second adsorption member (4) are connected to the upper and lower ends of the first adsorption member (2) through magnetic adsorption; Two telescopic supporting members (5) are respectively mounted on the first adsorption member (2) and the second adsorption member (4); one end of the two telescopic supporting members (5) is respectively connected to the first arc flexible heating sheet (1) and the second arc flexible heating sheet (3); the other end of the two telescopic supporting members (5) is respectively passed through the first adsorption member (2) and the second adsorption member (4); When it is necessary to deal with welding parts of different sizes, the telescopic supporting member (5) is extended or contracted to change the shape of the first circular arc flexible heating sheet (1) and the second circular arc flexible heating sheet (3) and adjust the accommodation space; the first circular arc flexible heating sheet (1) and the second circular arc flexible heating sheet (3) also include a T-shaped connecting block (9), and the T-shaped connecting block (9) is arranged along the width direction of the flexible circular arc metal sheet; The first adsorption member (2) and the second adsorption member (4) are both provided with a connecting guide rail (10), the connecting guide rail (10) is provided with a slide groove, and the T-shaped connecting block (9) is movably arranged in the slide groove; the first adsorption member (2) or the second adsorption member (4) is provided with a fixing block for fixing to an external device; the telescopic supporting member (5) includes a threaded rod (500), a rotating disk (501) and a supporting seat (502); The first adsorption member (2) and the second adsorption member (4) are both provided with threaded holes, the threaded rod (500) being installed in the threaded holes, one end of which is rotatably connected to the abutting seat (502) and the other end of which is fixedly connected to the rotating disk (501); the shape of the abutting surface of the abutting seat (502) is the same as that of the first circular arc flexible heating sheet (1) and the second circular arc flexible heating sheet (3).

2. The magnetic auxiliary heating device for power cable welding according to claim 1, characterized in that: The first circular arc flexible heating sheet (1) and the second circular arc flexible heating sheet (3) both comprise a flexible circular arc metal sheet and a plurality of heating tubes (7); the plurality of heating tubes (7) are distributed along the length direction of the flexible circular arc metal sheet and are arranged through the flexible circular arc metal sheet along the width direction of the flexible circular arc metal sheet; the heating tubes (7) are externally connected to a power supply device (8).

3. The magnetic auxiliary heating device for power cable welding according to claim 1, characterized in that: The first adsorption member (2) is a steel metal arc block; the second adsorption member (4) is an electromagnet arc block, and a terminal (11) is provided on the electromagnet arc block.

4. The magnetic auxiliary heating device for power cable welding according to claim 1, characterized in that: The first adsorption member (2) and the second adsorption member (4) both comprise an aluminum arc block and a strip electromagnet; the upper and lower ends of the aluminum arc block are connected to the strip electromagnet, and the strip electromagnet is provided with a connection head (11); when connection is required, the magnetic properties of the strip electromagnets of the first adsorption member (2) and the second adsorption member (4) are opposite; when disassembly is required, the magnetic properties of the strip electromagnets of the first adsorption member (2) and the second adsorption member (4) are the same.

5. The magnetic auxiliary heating device for power cable welding according to claim 1, characterized in that: A mounting piece (12) is provided on the first adsorption piece (2) or the second adsorption piece (4), and a temperature sensor (6) is provided on the mounting piece (12).

6. The magnetic auxiliary heating device for power cable welding according to claim 5, characterized in that: The mounting member (12) comprises a support rod (1200) and an arc ring (1201). The temperature sensor (6) is arranged along the length of the arc ring (1201). The arc ring (1201) is made of high-temperature resistant plastic.

7. The magnetic auxiliary heating device for power cable welding according to claim 6, characterized in that: The mounting member (12) is provided with a sound alarm device, which is used to emit a warning sound after the detection value of the temperature sensor (6) reaches a set value.

Images