Windproof device for gas shielded welding and welding system

Abstract

The invention provides an anti-wind device for gas shielded welding and a welding system. The anti-wind device for gas shielded welding comprises a tube shell, the tube shell is arranged outside a gun head of a welding gun in a sleeving mode, and a shielding gas containing cavity surrounding the gun head is formed between the tube shell and the gun head; the casing pipe is arranged outside the pipe shell in a sleeving mode, and an airflow drainage cavity surrounding the outside of the pipe shell is formed between the casing pipe and the pipe shell; the air source connector is arranged on the sleeve and communicated with the airflow drainage cavity, and the air source connector is used for guiding airflow from an air source into the airflow drainage cavity; the airflow drainage cavity is used for guiding airflow in the axial direction of the gun head so that the airflow can form an air curtain on the periphery of the shielding gas containing cavity. The anti-wind device can achieve the anti-wind function on the shielding gas, and compared with the prior art, the construction difficulty can be reduced, the equipment resource configuration can be simplified, and the construction cost can be saved.

Description

Technical Field

[0001] The present application relates to the technical field of welding construction, and in particular to a windproof device and a welding system for gas shielded welding. Background Art

[0002] At present, the gas-shielded fully automatic welding method has become the first choice for large-diameter pipeline laying construction in the domestic oil and gas pipeline network construction. Gas-shielded fully automatic welding requires a certain concentration of shielding gas to be continuously supplied near the welding gun to ensure stable welding quality. However, field construction is affected by natural wind, and the shielding gas around the welding gun is easily blown away by the wind and cannot reach the specified concentration, thus affecting normal welding. In order to ensure the concentration of shielding gas near the welding gun, the windproof device currently used is a welding windproof shed. The welding windproof shed isolates the 3m×3m space around the welding operation point with plates, thereby reducing the air flow in the working space and ensuring that the shielding gas around the welding gun maintains a certain concentration. However, with the increase in pipeline diameter, the welding windproof shed also increases in structural size and weight. These changes have made the requirements for hoisting equipment and working space environment during construction higher and higher, restricting the improvement of construction efficiency of oil and gas pipeline projects. Summary of the invention

[0003] The embodiments of the present application at least provide a wind shield device and a welding system for gas shielded welding. The wind shield device can realize the wind shielding function for the shielding gas, and compared with the prior art, it can reduce the construction difficulty, simplify the equipment resource allocation, and save construction costs.

[0004] In a first aspect, an embodiment of the present application provides a windproof device for gas shielded welding, comprising:

[0005] A tube shell, wherein the tube shell is sleeved outside the gun head of the welding gun, and a protective gas containing chamber surrounding the outside of the gun head is arranged between the tube shell and the gun head;

[0006] A sleeve, wherein the sleeve is sleeved outside the tube shell, and an airflow guiding cavity surrounding the outside of the tube shell is provided between the sleeve and the tube shell;

[0007] An air source interface, which is arranged on the sleeve and communicated with the air flow drainage cavity, and is used to introduce air flow from an air source into the air flow drainage cavity;

[0008] The airflow guiding cavity is used to guide the airflow along the axial direction of the gun head, so that the airflow forms an air curtain around the periphery of the protective gas containing cavity.

[0009] The windproof device is arranged on the welding gun, and can make the airflow form an air curtain at the periphery of the shielding gas containing chamber. The air curtain is used as a windproof wall to prevent the shielding gas from being blown away by the wind, so that the shielding gas is maintained at a specified concentration to ensure the welding quality. In addition, while achieving windproof, the operation procedures such as hoisting, fixing, and windproofing of the windproof shed can be reduced, which can not only simplify the operation process, but also reduce the allocation of equipment resources, thereby helping to reduce the difficulty of construction and save construction costs.

[0010] In an optional embodiment, the tube shell includes a first tube segment and a second tube segment, wherein the first tube segment and the second tube segment are connected, the first tube segment is sleeved outside the gun head, and a protective gas containing chamber surrounding the outside of the gun head is arranged between the second tube segment and the gun head.

[0011] In an optional implementation, the tube shell and the sleeve are made of transparent material.

[0012] In an optional embodiment, one end of the tube shell facing the welding operation point is flush with one end of the sleeve facing the welding operation point.

[0013] In an optional embodiment, the tube shell and the sleeve are an integral structure.

[0014] In an optional embodiment, one end of the tube shell facing the welding operation point and one end of the sleeve facing the welding operation point are radially inclined outward, so that the airflow diffuses toward the periphery of the air curtain after forming the air curtain.

[0015] In an optional embodiment, one end of the tube shell facing the welding operation point and one end of the sleeve facing the welding operation point are close to each other, so that the radial size of the air outlet of the airflow guiding cavity is reduced.

[0016] In an optional embodiment, the tube housing and the gun head are slidably matched, and the tube housing can move relative to the gun head along the axial direction of the gun head.

[0017] In an optional embodiment, the wind protection device for gas shielded welding further includes:

[0018] An elastic member is arranged between the tube shell and the welding gun, and is used to accumulate elastic potential energy when the tube shell moves, so that the tube shell can be reset under the action of the elastic potential energy.

[0019] In a second aspect, an embodiment of the present application further provides a welding system, including a gas shielded welding assembly and the wind protection device for gas shielded welding as described above.

[0020] The windproof device is arranged on the welding gun, and can make the airflow form an air curtain at the periphery of the shielding gas containing chamber. The air curtain is used as a windproof wall to prevent the shielding gas from being blown away by the wind, so that the shielding gas is maintained at a specified concentration to ensure the welding quality. In addition, while achieving windproof, the operation procedures such as hoisting, fixing, and windproofing of the windproof shed can be reduced, which can not only simplify the operation process, but also reduce the allocation of equipment resources, thereby helping to reduce the difficulty of construction and save construction costs.

[0021] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solutions of the present application. It should be understood that the following drawings only illustrate certain embodiments of the present application and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic structural diagram of a windproof device for gas shielded welding provided in an embodiment of the present application is shown;

[0024] Figure 2 A structural schematic diagram of a welding system provided in an embodiment of the present application is shown;

[0025] In the figure, 1, gun head; 2, welding operation point; 10, tube shell; 11, first tube section; 12, second tube section; 13, extrusion part; 20, shielding gas containing chamber; 30, sleeve; 40, air flow guiding chamber; 50, air source interface; 60, elastic part; 100, windproof device; 200, welding gun; 300, shielding gas source; 400, flow regulating module; 500, wind speed sensor; 600, control module. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0027] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] At present, most of the windproof devices for gas shielded welding are welding windproof sheds, which use plates to isolate the 3m×3m space around the welding operation point, thereby reducing the air flow in the operation space and ensuring that the protective gas around the welding gun maintains a certain concentration. However, as the diameter of the pipeline increases, the structural size and weight of the welding windproof shed also increase, and the requirements for hoisting equipment and the operation space environment are also getting higher and higher, resulting in great construction difficulty and greatly increased construction costs.

[0029] To this end, the embodiment of the present application provides a windproof device for gas shielded welding, which is used to replace the currently used welding windproof shed, not only to achieve the windproof function of the shielding gas, but also to reduce the construction difficulty, simplify the equipment resource configuration, and save construction costs. The following is a detailed description of it in conjunction with specific drawings and embodiments.

[0030] Figure 1 A schematic structural diagram of a wind protection device for gas shielded welding provided in an embodiment of the present application is shown.

[0031] refer to Figure 1The windproof device 100 for gas shielded welding provided in the embodiment of the present application includes a tube shell 10, a sleeve 30 and a gas source interface 50. The tube shell 10 is mounted on the outside of the gun head 1 of the welding gun, and a protective gas containing chamber 20 surrounding the outside of the gun head 1 is provided between the tube shell 10 and the gun head 1. The sleeve 30 is mounted on the outside of the tube shell 10, and an airflow guide chamber 40 surrounding the outside of the tube shell 10 is provided between the sleeve 30 and the tube shell 10. The gas source interface 50 is arranged on the sleeve 30 and is connected to the airflow guide chamber 40, and the gas source interface 50 is used to introduce the airflow from the gas source into the airflow guide chamber 40. The airflow guide chamber 40 is used to guide the airflow along the axial direction of the gun head 1, so that the airflow forms an air curtain around the protective gas containing chamber 20. During specific use, the windproof device 100 can make the airflow form an air curtain at the periphery of the shielding gas containing chamber 20. The air curtain is used as a windproof wall to prevent the shielding gas from being blown away by the wind, thereby maintaining the shielding gas at a specified concentration and ensuring the welding quality.

[0032] In the embodiment of the present application, in order to form the protective gas containing chamber 20, the tube shell 10 can be composed of tube segments of different calibers. Exemplarily, the tube shell 10 includes a first tube segment 11 and a second tube segment 12, wherein the first tube segment 11 and the second tube segment 12 are connected, the first tube segment 11 is sleeved outside the gun head 1, and a protective gas containing chamber 20 surrounding the gun head 1 is provided between the second tube segment 12 and the gun head 1. Figure 1 As shown, the embodiment of the present application shows that the second pipe segment 12 is located at one end of the first pipe segment 11 close to the welding operation point 2 , and the diameter of the second pipe segment 12 is larger than the diameter of the first pipe segment 11 .

[0033] In the specific configuration, the first pipe section 11 and the second pipe section 12 can be connected and fixed by bolt connectors, snap connectors, etc., and the first pipe section 11 and the second pipe section 12 can also be an integral structure. The above configurations can achieve the connection and fixation of the first pipe section 11 and the second pipe section 12. Figure 1 As shown, the embodiment of the present application shows a configuration in which the first pipe section 11 and the second pipe section 12 are an integrated structure.

[0034] In the embodiment of the present application, in order to facilitate observation of the welding condition, the tube shell 10 and the sleeve 30 are made of transparent material. Exemplarily, the tube shell 10 and the sleeve 30 are made of high temperature resistant transparent glass material, which not only facilitates observation of the welding condition, but also prevents the tube shell 10 and the sleeve 30 from bursting due to excessive temperature during the welding process.

[0035] refer to Figure 1In the embodiment of the present application, the end of the tube shell 10 facing the welding operation point 2 is flush with the end of the sleeve 30 facing the welding operation point 2. With this design, the air outlet of the air flow guiding cavity 40 can be as close to the welding operation point 2 as possible, thereby reducing the distance between the air outlet of the air flow guiding cavity 40 and the welding operation point 2, thereby avoiding affecting the windproof effect of the air curtain due to the large distance between the two.

[0036] Furthermore, in the embodiment of the present application, the tube shell 10 and the sleeve 30 are fixedly connected. This design can prevent the air outlet of the airflow guide cavity 40 from being away from the welding operation point 2 due to the relative movement between the tube shell 10 and the sleeve 30, thereby improving the reliability of the system.

[0037] In specific configuration, the tube shell 10 and the sleeve 30 can be connected and fixed by bolt connectors, snap connectors, etc., and the tube shell 10 and the sleeve 30 can also be an integrated structure. The above configuration methods can achieve the connection and fixation of the tube shell 10 and the sleeve 30. Figure 1 As shown, the embodiment of the present application shows a configuration in which the tube shell 10 and the sleeve 30 are an integrated structure. This configuration can improve the connection strength between the tube shell 10 and the sleeve 30, save corresponding connection processes, and reduce processing costs.

[0038] Furthermore, in the embodiment of the present application, the end of the tube shell 10 facing the welding operation point 2 and the end of the sleeve 30 facing the welding operation point 2 are close to each other, so that the radial size of the air outlet of the air flow guiding cavity 40 is reduced. With this design, the air flow can be accelerated when passing through the air outlet, thereby improving the windproof effect of the air curtain.

[0039] In specific configuration, the tube shell 10 and the sleeve 30 may be deformed by pressure or molding to reduce the size of the gas outlet. This embodiment of the present application does not make any specific limitation on this.

[0040] Furthermore, in the embodiment of the present application, one end of the tube shell 10 facing the welding operation point 2 and one end of the sleeve 30 facing the welding operation point 2 are radially inclined outward. With this design, the airflow can diffuse toward the periphery of the air curtain after forming the air curtain, thereby preventing the airflow from entering the protective gas containing chamber 20 and further affecting the concentration of the protective gas.

[0041] In specific configuration, the tube shell 10 and the sleeve 30 may be deformed by pressure or molding, so that the end of the tube shell 10 facing the welding operation point 2 and the end of the sleeve 30 facing the welding operation point 2 are radially tilted outward. This embodiment of the present application does not make specific limitations on this.

[0042] In the embodiment of the present application, in order to improve the applicability, the windproof device 100 can move along the axial direction of the gun head 1. Exemplarily, the tube shell 10 and the gun head 1 are slidably matched, and the tube shell 10 can move along the axial direction of the gun head 1 relative to the gun head 1. During the welding process, when the welding depth changes, the axial movement of the tube shell 10 along the gun head 1 can adjust the distance from the gun head 1 to the welding operation point 2, thereby ensuring the welding quality. Therefore, by adopting this design solution, the adaptability of the windproof device 100 can be improved.

[0043] Further, in the embodiment of the present application, in order to facilitate the resetting of the tube shell 10, the wind shield 100 for gas shielded welding further includes a resetting structure, which is used to enable the tube shell 10 to be relocated after moving relative to the cavity. Exemplarily, the resetting structure is an elastic member 60, which is disposed between the tube shell 10 and the welding gun, and is used to accumulate elastic potential energy when the tube shell 10 moves, so that the tube shell 10 can be relocated under the action of the elastic potential energy.

[0044] As an example, the elastic member 60 may be a spring which is sleeved outside the gun head 1. When the tube shell 10 moves axially toward the rear end of the gun head 1, the spring contracts to accumulate elastic potential energy so that the tube shell 10 can be reset under the action of the elastic potential energy.

[0045] In order to ensure that the tube shell 10 can effectively compress the spring, a pressing portion 13 for pressing the spring is provided on the tube shell 10. Figure 1 As shown, the embodiment of the present application shows that the extrusion part 13 is arranged at the end of the tube shell 10 facing away from the welding operation point 2. In the specific arrangement, the extrusion part 13 can be an independent structure fixed on the tube shell 10, or it can be integrally formed with the tube shell 10.

[0046] It should be noted that the above-mentioned method of setting up the wind protection device 100 can be set according to actual conditions and is not limited to the method discussed above.

[0047] The above-mentioned windproof device 100 is arranged on the welding gun, which can make the airflow form an air curtain at the periphery of the shielding gas containing chamber 20. The air curtain is used as a windproof wall to prevent the shielding gas from being blown away by the wind, thereby maintaining the shielding gas at a specified concentration to ensure the welding quality.

[0048] The above-mentioned windproof device 100 can reduce the operation procedures such as hoisting, fixing, and windproofing of the windproof shed while achieving wind protection. It can not only simplify the operation process, but also reduce the allocation of equipment resources, which is conducive to reducing the difficulty of construction and saving construction costs.

[0049] Figure 2 A structural schematic diagram of a welding system provided in an embodiment of the present application is shown.

[0050] refer to Figure 2 The embodiment of the present application also provides a welding system, including a gas shielded welding assembly and a wind shield 100 for gas shielded welding.

[0051] refer to Figure 2 In the embodiment of the present application, the gas shielded welding assembly includes a welding gun 200, a shielding gas source 300, a flow regulating module 400, a wind speed sensor 500 and a control module 600. The shielding gas source 300 is used to provide shielding gas to the welding gun 200. The flow regulating module 400 is used to adjust the flow of shielding gas. The wind speed sensor 500 is used to detect the external wind speed. The control module 600 is used to control the flow regulating module 400 to adjust the flow of shielding gas according to the wind speed.

[0052] Before welding, follow Figure 2 The welding gun 200, the shielding gas source 300, the flow regulating module 400, the wind speed sensor 500 and the control module 600 are connected in the manner shown, and the windproof device 100 is installed on the gun head of the welding gun 200. During the welding process, the shielding gas source 300 supplies gas to the welding gun 200 through the flow regulating module 400, and the control module 600 controls the flow regulating module 400 to adjust the gas supply flow rate in real time according to the wind speed detected by the wind speed sensor 500.

[0053] The windproof device 100 is arranged on the welding gun 200, and can make the airflow form an air curtain at the periphery of the shielding gas containing chamber 20. The air curtain is used as a windproof wall to prevent the shielding gas from being blown away by the wind, so that the shielding gas is maintained at a specified concentration to ensure the welding quality. In addition, while achieving windproof, the operation procedures such as hoisting, fixing, and windproofing of the windproof shed can be reduced, which can not only simplify the operation process, but also reduce the allocation of equipment resources, thereby helping to reduce the difficulty of construction and save construction costs.

[0054] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this application.

[0055] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A windproof device for gas shielded welding, characterized in that: include: A tube shell, wherein the tube shell is sleeved outside the gun head of the welding gun, and a protective gas containing chamber surrounding the outside of the gun head is arranged between the tube shell and the gun head; A sleeve, wherein the sleeve is sleeved outside the tube shell, and an airflow guiding cavity surrounding the outside of the tube shell is provided between the sleeve and the tube shell; An air source interface, which is arranged on the sleeve and communicated with the air flow drainage cavity, and is used to introduce air flow from an air source into the air flow drainage cavity; The airflow guiding cavity is used to guide the airflow along the axial direction of the gun head, so that the airflow forms an air curtain around the periphery of the protective gas containing cavity.

2. The windproof device for gas shielded welding according to claim 1, characterized in that: The tube shell includes a first tube segment and a second tube segment, wherein the first tube segment and the second tube segment are connected, the first tube segment is sleeved outside the gun head, and a protective gas containing chamber surrounding the outside of the gun head is arranged between the second tube segment and the gun head.

3. The windproof device for gas shielded welding according to claim 1, characterized in that: The tube shell and the sleeve are made of transparent material.

4. The windproof device for gas shielded welding according to claim 1, characterized in that: One end of the tube shell facing the welding operation point is flush with one end of the sleeve facing the welding operation point.

5. The windproof device for gas shielded welding according to claim 4, characterized in that: The tube shell and the sleeve are an integrated structure.

6. The windproof device for gas shielded welding according to claim 4, characterized in that: One end of the tube shell facing the welding operation point and one end of the sleeve facing the welding operation point are close to each other.

7. The windproof device for gas shielded welding according to claim 4, characterized in that: One end of the tube shell facing the welding operation point and one end of the sleeve facing the welding operation point are inclined radially outward.

8. The windproof device for gas shielded welding according to any one of claims 1 to 7, characterized in that: The tube shell and the gun head are slidably matched, and the tube shell can move relative to the gun head along the axial direction of the gun head.

9. The windproof device for gas shielded welding according to claim 8, characterized in that: Also includes: An elastic member is arranged between the tube shell and the welding gun, and is used to accumulate elastic potential energy when the tube shell moves, so that the tube shell can be reset under the action of the elastic potential energy.

10. A welding system, characterized in that: The invention comprises a gas shielded welding assembly and a wind shielding device for gas shielded welding as claimed in any one of claims 1 to 9.

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