Gas protection device for longitudinal seam welding of air cooler tube sheet

Abstract

The utility model discloses a kind of air cooler tube box longitudinal weld welding gas protection devices, including gas path component and section bar support, the gas path component includes two parallelly arranged purple copper pipes, two purple copper pipes are distributed in its left and right side along section bar support length direction, one end of two purple copper pipes is communicated by gas path tee joint, the other end of two purple copper pipes is equipped with plug, the tube wall of purple copper pipe has gas blowing hole linear array along its length direction, and purple copper pipe is connected with section bar support by multiple fixing blocks.The utility model is simple in structure, convenient to operate, can efficiently realize air cooler stainless steel tube box whole or double longitudinal weld back gas protection, while avoiding welding slag damage base material, effectively solve the welding problem in air cooler manufacturing, with significant economic benefits and extensive application value, can be applied to the welding manufacturing of various air cooler stainless steel tube box.

Description

Technical Field

[0001] This utility model relates to the field of welding auxiliary equipment technology, specifically a gas protection device for welding longitudinal welds in air cooler tube boxes. Background Technology

[0002] In the manufacturing process of air coolers, the welding quality of the longitudinal welds of the stainless steel tube box directly affects the equipment performance and service life. During the welding process of the stainless steel tube box, the back of the weld needs to be filled with a protective gas (such as argon) to prevent oxidation. Traditional single-pass weld protection devices have the following problems: 1. Low protection efficiency: Single-pass weld protection requires multiple adjustments, resulting in low welding efficiency and difficulty in meeting the needs of mass production of air coolers. 2. Poor adaptability: There is a lack of effective back protection devices for double longitudinal welds, resulting in unstable welding quality; 3. Weld slag damage: Weld slag generated during the welding process can easily fall directly onto the surface of the base material, causing damage to the base material. Especially when the internal space of the air cooler tube box is limited, the welding slag is difficult to clean, increasing the labor intensity of personnel. In the existing technology, there are few optimization designs for the specific structure of stainless steel tube boxes for air coolers, making it difficult to achieve synchronous protection of double longitudinal welds, and there is a lack of effective slag protection measures, which makes it difficult to meet the high welding quality requirements in the manufacturing of air coolers. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a gas protection device for welding longitudinal welds of air cooler tube boxes. It has a simple structure and is easy to operate. It can efficiently realize gas protection on the back of the entire or double longitudinal weld of the stainless steel tube box of the air cooler, while avoiding damage to the base material by welding slag. It effectively solves the welding problems in the manufacturing of air coolers and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a gas protection device for welding longitudinal weld seams of air cooler tube boxes, comprising a gas path assembly and a profile support. The gas path assembly includes two parallel copper tubes, which are distributed along the length of the profile support on its left and right sides. One end of the two copper tubes is connected by a gas path tee, and the other end of each copper tube is provided with a plug. The tube walls of the copper tubes have air blowing holes arranged linearly along their length. The copper tubes are connected to the profile support through multiple fixing blocks.

[0005] Preferably, it also includes two symmetrically arranged clamps, each clamping member including a Z-shaped clamping plate. A T-bolt is fixed to one side plate of the Z-shaped clamping plate. The T-bolt is threaded with a nut. The T-bolt passes through a through hole on the side plate of the Z-shaped clamping plate and slides in a groove on the upper side of the profile bracket.

[0006] Preferably, the fixing block has a through hole adapted to the copper tube, and one end of the fixing block slides into the grooves on the left and right sides of the profile bracket.

[0007] Preferably, the left and right sides of the profile support are provided with slag receiving plates located directly below the copper tube. The slag receiving plates are Z-shaped and are welded to the profile support to form a collection trough.

[0008] Preferably, the air tee is connected to the copper pipe via a plastic hose and an air connector.

[0009] Preferably, the profile bracket is made of 40 series aluminum alloy profile and the surface is anodized.

[0010] Compared with the prior art, the advantages of this utility model are: simple structure and convenient operation, which can efficiently realize back gas protection of the whole or double longitudinal weld seam of the stainless steel tube box of the air cooler, while avoiding damage to the base material by the weld slag. It effectively solves the welding problem in the manufacturing of air coolers, has significant economic benefits and wide application value, and can be promoted to the welding manufacturing of stainless steel tube boxes of various air coolers. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the gas path assembly structure of this utility model; Figure 3 This is a side view of the present invention; Figure 4 This is a schematic diagram of the clamping structure of this utility model.

[0012] In the diagram: 1 clamp, 1.1 T-bolt, 1.2 nut, 1.3 Z-shaped clamp, 2 air circuit assembly, 2.1 copper pipe, 2.2 air circuit tee, 2.3 fixing block, 2.4 air blowing hole, 2.5 plug, 3 profile bracket, 4 slag receiving plate. Detailed Implementation

[0013] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0014] Please see Figure 1-4 The present invention provides the following technical solution: Example 1: A gas protection device for longitudinal weld seam welding of air cooler tube box, including gas circuit assembly 2 and profile support 3. The gas circuit assembly 2 includes two parallel copper tubes 2.1. The two copper tubes 2.1 are distributed on the left and right sides of the profile support 3 along its length direction. One end of the two copper tubes 2.1 is connected by a gas circuit tee 2.2. The other end of the two copper tubes 2.1 is provided with a plug 2.5. The tube wall of the copper tube 2.1 has air blowing holes 2.4 arranged linearly along its length direction. The copper tubes 2.1 are connected to the profile support 3 through multiple fixing blocks 2.3. It is understandable that a φ10 copper pipe 2.1 is arranged on each side of the profile support 3, and φ1 air holes 2.4 are evenly opened along the length of the pipe wall to allow the protective gas to escape evenly inside the stainless steel pipe box, forming an overall back protection for the weld. The two copper pipes 2.1 are connected by a gas tee 2.2, and the other end of the copper pipe 2.1 is sealed with a plug to ensure the airtightness of the gas path, forming two separate gas delivery channels, thereby meeting the requirements for simultaneous welding protection of two welds, avoiding multiple adjustments to the back protection device, and improving welding efficiency. Furthermore, the fixing block 2.3 has a through hole that is compatible with the copper tube 2.1. One end of the fixing block 2.3 slides into the grooves on the left and right sides of the profile bracket 3. The copper tube 2.1 is fixed to the profile bracket 3 by the fixing block 2.3 to ensure the stability of the gas circuit assembly 2. It should be noted that the gas tee 2.2 is connected to the copper pipe 2.1 via a plastic hose and a gas connector, which facilitates installation and connection; Specifically, the profile bracket 3 is made of 40 series aluminum alloy profile with a cross section of 40mm×80mm and a length of 4m. It serves as the support frame for the device and is anodized to improve corrosion resistance, making it suitable for the air cooler manufacturing environment.

[0015] Example 2: Unlike Example 1, it also includes two symmetrically arranged clamps 1. The clamp 1 includes a Z-shaped clamp 1.3. A T-bolt 1.1 is fixed to one side plate of the Z-shaped clamp 1.3. The T-bolt 1.1 is threaded with a nut 1.2. The T-bolt 1.1 passes through the through hole on the side plate of the Z-shaped clamp 1.3. The T-bolt 1.1 slides in the groove on the upper side of the profile bracket 3. The T-bolt 1.1 of the clamp 1 can be adjusted along the length of the profile bracket 3 to accommodate stainless steel pipe boxes of different lengths.

[0016] Example 3: Unlike Example 2, the left and right sides of the profile bracket 3 are provided with slag receiving plates 4 located directly below the copper tube 2.1. The slag receiving plates 4 are Z-shaped and are welded to the profile bracket 3 to form a collection groove, which can collect the welding slag, prevent the welding slag from falling on the base material and causing damage to the base material, and reduce the work of grinding the welding slag and improve work efficiency.

[0017] Taking a certain type of air cooler stainless steel tube box (internal space 100mm, length 2.5m) as an example, the device is inserted into the tube box and fixed to the end of the tube box by clamp 1; argon gas is introduced, and the gas escapes evenly from the air blowing hole 2.4 of the copper tube 2.1 through the gas path component 2, covering the back of the left and right longitudinal welds; during the welding process, the welding slag falls into the slag receiving plate 4, completing the protection and shielding. This device improves the welding efficiency by 50% and the weld quality qualification rate from 85% to 98%, significantly improving the manufacturing quality of the air cooler.

[0018] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents in the content of this utility model.

Claims

1. A gas protection device for welding longitudinal weld seams of an air cooler tube box, characterized in that, The system includes an air passage assembly (2) and a profile support (3). The air passage assembly (2) includes two parallel copper tubes (2.1). The two copper tubes (2.1) are distributed on the left and right sides of the profile support (3) along its length. One end of the two copper tubes (2.1) is connected by an air passage tee (2.2). The other end of the two copper tubes (2.1) is provided with a plug (2.5). The tube wall of the copper tube (2.1) has air holes (2.4) arranged linearly along its length. The copper tube (2.1) is connected to the profile support (3) through multiple fixing blocks (2.3).

2. The gas protection device for longitudinal weld seam welding of an air cooler tube box according to claim 1, characterized in that: It also includes two symmetrically arranged clamps (1). The clamps (1) include a Z-shaped clamp (1.3). A T-bolt (1.1) is fixed on one side plate of the Z-shaped clamp (1.3). The T-bolt (1.1) is threaded with a nut (1.2). The T-bolt (1.1) passes through the through hole on the side plate of the Z-shaped clamp (1.3). The T-bolt (1.1) slides in fit with the groove on the upper side of the profile bracket (3).

3. The gas protection device for longitudinal weld seam welding of an air cooler tube box according to claim 1, characterized in that: The fixing block (2.3) has a through hole that is compatible with the copper tube (2.1), and one end of the fixing block (2.3) slides in fit with the grooves on the left and right sides of the profile bracket (3).

4. The gas protection device for longitudinal weld seam welding of an air cooler tube box according to claim 1, characterized in that: The profile support (3) is provided with a slag receiving plate (4) on both the left and right sides, which is located directly below the copper tube (2.1). The slag receiving plate (4) is Z-shaped and is welded to the profile support (3) to form a collection trough.

5. A gas protection device for longitudinal weld seam welding of an air cooler tube box according to claim 1, characterized in that: The gas tee (2.2) is connected to the copper pipe (2.1) through a plastic hose and a gas connector.

6. The gas protection device for longitudinal weld seam welding of an air cooler tube box according to claim 1, characterized in that: The profile bracket (3) is made of 40 series aluminum alloy profile and the surface is anodized.

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