Rapid preheating device for aluminum busbar welding

Abstract

The utility model discloses an aluminum bus welding rapid preheating device which comprises a baking gun gas conveying pipe, the tail end of the baking gun gas conveying pipe is connected with a gas inlet pipe joint, the gas inlet pipe joint comprises a combustible gas pipe joint and a combustion-supporting gas pipe joint, and the combustible gas pipe joint and the combustion-supporting gas pipe joint are connected to form a Y-shaped gas inlet pipe joint. A holding soft sleeve is connected to the outer surface of the baking gun gas conveying pipe in a sleeving mode, an L-shaped pipe connector is connected to the front end of the baking gun gas conveying pipe, a semi-annular bent pipe frame is installed at the top end of the L-shaped pipe connector, and a plurality of welding gun nozzles are installed on the inner side of the semi-annular bent pipe frame. According to the scheme, the front end opening of the gas conveying pipe of the baking gun is connected with the semi-annular bent pipe frame through the L-shaped pipe connector, and the welding gun nozzles which are symmetrically distributed are arranged on the inner side of the semi-annular bent pipe frame. The aluminum bus located at the circle center of the semi-annular bent pipe frame can be welded and preheated at the same time from multiple angles, the welding preheating efficiency is higher, and operation is easy.

Description

Technical Field

[0001] This utility model relates to the field of aluminum busbar welding frame preheating technology, specifically to a rapid preheating device for aluminum busbar welding. Background Technology

[0002] Self-propagating welding is currently the most commonly used method for welding aluminum busbars. This method involves igniting flux in a crucible without relying on electricity. The flux spontaneously undergoes a chemical reaction, forming a high-temperature molten metal. This molten metal flows into the weld seam and solidifies, completing the welding of the aluminum busbar. This self-propagating welding process can proceed rapidly and spontaneously without requiring any further energy input, hence its widespread application.

[0003] When welding aluminum busbars via self-propagating reaction, preheating of the aluminum busbars is required. Otherwise, the molten metal weld will quickly solidify due to heat absorption by the aluminum busbars, and it cannot be guaranteed that every gap will be penetrated. Most acetylene torches on the market are single-tube torch structures, which are too slow for preheating aluminum busbars. Therefore, this solution provides a rapid preheating device for welding aluminum busbars. Utility Model Content

[0004] The purpose of this invention is to provide a rapid preheating device for aluminum busbar welding to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid preheating device for aluminum busbar welding, comprising a heating torch gas supply pipe, an air inlet pipe connector connected to the end of the heating torch gas supply pipe, the air inlet pipe connector comprising a combustible gas pipe connector and a combustion-supporting gas pipe connector, the combustible gas pipe connector and the combustion-supporting gas pipe connector being connected to form a "Y"-shaped air inlet pipe connector, a holding soft sleeve fitted on the outer surface of the heating torch gas supply pipe, an L-shaped pipe connector connected to the front end of the heating torch gas supply pipe, a semi-circular bend pipe frame installed at the top end of the L-shaped pipe connector, and a plurality of welding torch nozzles installed on the inner side of the semi-circular bend pipe frame.

[0006] Preferably, the number of welding torch nozzles is six, and the six welding torch nozzles are symmetrically distributed and connected to the inner wall of the semi-circular pipe bending frame, and the nozzles of the six welding torch nozzles are all set towards the inner center of the semi-circular pipe bending frame.

[0007] Preferably, each of the six welding torch nozzles is equipped with a switching valve. Beneficial effects

[0008] This utility model provides a rapid preheating device for welding aluminum busbars, which has the following beneficial effects:

[0009] In this solution, a semi-circular bend frame is connected to the front end of the gas supply pipe of the heating torch by an L-shaped pipe joint, and multiple symmetrically distributed welding torch nozzles are set inside the semi-circular bend frame. Compared with the traditional single-tube acetylene heating torch structure, the aluminum busbar located at the center of the semi-circular bend frame can be preheated for welding from multiple angles at the same time, resulting in higher welding preheating efficiency and simpler operation. Attached Figure Description

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

[0011] In the diagram: 1. Gas supply pipe for the heating torch; 2. Combustible gas pipe connector; 3. Combustion-supporting gas pipe connector; 4. Holding sleeve; 5. L-shaped pipe connector; 6. Semi-circular bend pipe bracket; 7. Welding torch nozzle; 8. Switch valve. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Please see Figure 1 This utility model provides a technical solution: a rapid preheating device for aluminum busbar welding, including a heating torch gas supply pipe 1, an air inlet pipe connector connected to the end of the heating torch gas supply pipe 1, the air inlet pipe connector including a combustible gas pipe connector 2 and a combustion-supporting gas pipe connector 3, the combustible gas pipe connector 2 and the combustion-supporting gas pipe connector 3 are connected to form a "Y" shaped air inlet pipe connector, a holding soft sleeve 4 is sleeved on the outer surface of the heating torch gas supply pipe 1, an L-shaped pipe connector 5 is connected to the front end of the heating torch gas supply pipe 1, a semi-circular pipe bending frame 6 is installed at the top end of the L-shaped pipe connector 5, and a plurality of welding torch nozzles 7 are installed on the inner side of the semi-circular pipe bending frame 6. The welding torch nozzles 7 are equipped with igniters, which are used to ignite the gas when it is output from the welding torch nozzles 7, so as to realize the flame welding operation.

[0014] There are six welding torch nozzles 7. The six welding torch nozzles 7 are symmetrically distributed and connected to the inner wall of the semi-circular pipe bending frame 6. The nozzles of the six welding torch nozzles 7 are all set towards the inner center of the semi-circular pipe bending frame 6. Three welding torch nozzles 7 are installed on the left and right inner walls of the semi-circular pipe bending frame 6 respectively. The horizontal angle between the multiple welding torch nozzles 7 on the left and right sides is 30°.

[0015] Each of the six welding torch nozzles 7 is equipped with a switching valve 8, which is used to control the switching of the gas entering the corresponding welding torch nozzle 7, facilitating maintenance.

[0016] Combustible gas pipe connector 2 and oxidizing gas pipe connector 3 are distinguished by different colors.

[0017] Working principle:

[0018] In this device structure, a semi-circular bend frame 6 is connected to the front end of the gas supply pipe 1 of the heating torch via an L-shaped pipe connector 5. The inner side of the semi-circular bend frame 6 is an arc-shaped cavity. When preheating the aluminum busbar for welding, the holder soft sleeve 4 of the gas supply pipe 1 of the heating torch can be held by hand. The combustible gas pipe connector 2 and the combustion-supporting gas pipe connector 3 are connected to the external combustible gas and combustion-supporting oxygen. The gas supply pipe 1 passes through the L-shaped pipe connector 5 and is delivered to the six welding torch nozzles 7 on the inner side of the semi-circular bend frame 6. The flame spraying effect is achieved after ignition by the igniter on the welding torch nozzle 7.

[0019] Place the aluminum busbar to be preheated for welding on the ground. Hold the semi-circular bending frame 6 and align the inner notch of the semi-circular bending frame 6 with the aluminum busbar. Simultaneously preheat the aluminum busbar to be preheated through the six welding torch nozzles 7 inside the semi-circular bending frame 6 at the center of the inner side of the frame. Compared with the traditional single rod-shaped torch structure, the heating angle is greater, which improves the efficiency of welding preheating and avoids the molten metal being absorbed by the aluminum busbar and solidifying quickly, thus ensuring that every gap is penetrated.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid preheating device for welding of aluminium busbars, comprising a blowpipe gas feed tube (1), characterised in that, The end part of the torch gas conveying pipe (1) is connected with a gas inlet pipe joint, the gas inlet pipe joint contains a combustible gas pipe joint (2) and a combustion-supporting gas pipe joint (3), the combustible gas pipe joint (2) and the combustion-supporting gas pipe joint (3) are connected to form a "Y"-shaped gas inlet pipe joint, a holding sleeve (4) is sleeved on the outer surface of the torch gas conveying pipe (1), the front end part of the torch gas conveying pipe (1) is connected with an L-shaped pipe joint (5), the top end part of the L-shaped pipe joint (5) is provided with a semi-ring-shaped elbow pipe rack (6), and the inner side of the semi-ring-shaped elbow pipe rack (6) is provided with a plurality of welding torch nozzles (7).

2. The apparatus for rapid preheating of aluminum busbar welding according to claim 1, characterized in that: The number of the welding torch nozzles (7) is six, the six welding torch nozzles (7) are symmetrically distributed and connected to the inner wall of the semi-ring-shaped elbow pipe rack (6), and the six welding torch nozzles (7) are all arranged towards the inner side center of the semi-ring-shaped elbow pipe rack (6).

3. The apparatus for rapid preheating of aluminum busbar welding according to claim 1, characterized in that: A switch valve (8) is arranged on each of the six welding torch nozzles (7).

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